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This Week in Microbiology is a podcast about unseen life on Earth hosted by Vincent Racaniello and friends. Following in the path of his successful shows 'This Week in Virology' (TWiV) and 'This Week in Parasitism' (TWiP), Racaniello and guests produce an informal yet informative conversation about microbes which is accessible to everyone, no matter what their science background.
- 321 - 320: Rockstars of USAMRIID
TWiM travels to the U.S. Army Medical Research Institute of Infectious Diseases to learn how research conducted at USAMRIID leads to vaccines, drugs, diagnostics, and training programs that protect both warfighters and civilians.
Hosts: Michael Schmidt, Petra Levin and Michele Swanson. Guests: Norman Kreiselmeir, Christopher K Coat, Keersten Ricks, and Eric Nguyen Links for this episode:
U.S. Army Medical Research Institute of Infectious Diseases Threading the NEIDL (TWiV 200) Unintentional importation of B. pseudomallei into US (Emerg Inf Dis)Become a patron of TWiM.
Links for this episode Engineering the cow for less methane emissions (WaPo) Precision microbiome editing (Audacious Project) Giant viruses carry antibiotic resistance genes (Nat Commun) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 25 Oct 2024 - 1h 15min - 320 - 319: The Dark Side of the Rumen
TWiM explains a project to engineer the cow microbiome to reduce emissions of methane, and the finding of antibiotic resistance genes in the genomes of giant viruses.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson.
Subscribe to TWiM (free) on Apple Podcasts, Spotify, Android, RSS, or by email.
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Links for this episode Engineering the cow for less methane emissions (WaPo) Precision microbiome editing (Audacious Project) Giant viruses carry antibiotic resistance genes (Nat Commun) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 11 Oct 2024 - 52min - 319 - 318: How To Pick a Winner
TWiM explains how bacterial community structure can be used to predict athletic performance in racehorses, and the idea that a tiny fraction of all species forms most of Nature.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Mark O. Martin.
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Links for this episode Microbiome picks a winner (Sci Rep) Picking a Winner by Reading the Form Hen’s Teeth and Horse’s Toes by Stephen Jay Gould How much does it cost to breed a horse? Date of birth and purchase price as foals or yearlings and race performance Rarity as a sticky state (PNAS) How many species on Earth? (PLoS Biol) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 27 Sep 2024 - 1h 07min - 318 - 317: Bat White-nose Syndrome
TWiM explains unique modifications in the energy conservation pathways linked to methanogenesis in an Archaeon, and mechanisms of white nose fungal invasion of cells from the Little Brown Bat.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson.
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Links for this episode Methyl-reducing methanogenesis (Nature) Pathogenic strategies of Pseudogymnoascus destructans (Science) Adaptive fungal invasion of bat cells (Science) Little brown bat (Critter Catalog) Nature Notes: Little Brown Bat (Harpswell) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 14 Sep 2024 - 54min - 317 - 316: Food Addiction and the Gut Microbiome
TWiM describes experiments to explore gut microbiota signatures of vulnerability to food addiction in mice and humans, and how a phage tail-like protein suppresses competitors in populations of bacteria of plants.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson.
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Links for this episode Gut microbiota and food addiction (Probiotics) Blautia may have probiotic properties (Gut Microbes) Blautia wexlerae ameliorates obesity and type 2 diabetes (Nat Commun) Phage tail–like bacteriocin suppresses competitors (Science) What is a bacteriocin? (Front Micro) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 23 Aug 2024 - 56min - 316 - 315: How Pseudomonas Became A Global Pathogen
TWiM explores evolution and host adaptation of Pseudomonas infections of plants, and the impact of COVID-19 on ESBL-producing E. coli on urinary tract and blood infections.
Hosts: Vincent Racaniello and Michael Schmidt.
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Links for this episode Evolution and host adaptation of Pseudomonas (Science) Type III secretion system, infection by injection (Nat Comm) Demographic inference with skyline plots (Peer J) Skyline plots (Taming the Beast) Panaroo, a bacterial genome analysis pipeline (Wellcome Sanger Inst) Impact of COVID-19 on ESBL-producing E. coli infections (Antimicro Resist Inf Control) Take the TWiM Listener survey!Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 09 Aug 2024 - 58min - 315 - 314: Microbes Sculpt Our Planet and Manage Inflammation
TWiM explores the deep-dwelling microbes that sculpt our planet, and the use of microbes in bioelectronics to manage inflammation.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson.
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Links for this episode Deep-dwelling microbes that sculpt our planet (NY Times) Living bioelectronics resolve inflammation (Science) Active biointegrated living electronics for managing inflammation (Science) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 27 Jul 2024 - 52min - 314 - 313: Could Fungal Pathogens Outsmart US?
From ASM Microbe in Atlanta, Georgia, Arturo joins TWiM to reveal the threats that fungi pose to human health, including the notorious Candida auris and many more and how committed experts are researching ways to save us and our food supplies.
Hosts: Michael Schmidt, Mark O. Martin
Guest: Arturo Casadevall
Watch this episode: https://youtu.be/nKJe5xNUocU
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Links for this episode Disaster mycology (Biomedica) Emergence of C. auris (mBio) What if fungi win? (JHU Press) Thinking about Science: Good Science, Bad Science, and How to Make It Better (Amazon) Recorded at ASM Microbe 2024 in Atlanta, Georgia. Join us at the next ASM Microbe by visiting us at asm.org/microbe Matters Microbial Take the TWiM Listener survey!Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Thu, 11 Jul 2024 - 44min - 313 - 312: Cry Havoc!, and Let Slip the Phages of Healing
TWiM explains a new mechanism for preventing lysogeny through temperate phage-antibiotic synergy, and Salmonella expansion in the murine gut dependency on aspartate derived from reactive oxygen species-mediated microbiota lysis.
Hosts: Michael Schmidt, Petra Levin and Michele Swanson.
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Links for this episode Temperate phage-antibiotic synergy (mBio) Salmonella expansion dependent on aspartate (Cell Host Micr) Arrowsmith by Sinclair Lewis (Wiki) A Genetic Switch by Mark Ptashne Lysis timing and bacteriophage fitness (Genetics) HK97 capsid assembly (Ad Exp Med Biol) Mode of action of fluoroquinolones (Drugs) Salmonella a foodborne pathogen (CDC) Freeman Hrabowski Scholars Program (HHMI) Sam Kaplan - 30 years of Microbiology (McGovern Medical School) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 28 Jun 2024 - 53min - 312 - 311: Bacteria, beware of siderophore-antibiotic hybrids
TWiM explores how climate change may be increasing our risks to infectious disease and then how the Odyssey literally comes alive in our microbial world but fear not, unlike the Trojans, the bacteria are fighting back and have developed resistance to this novel class of newly developed antimicrobials.
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Links for this episode:
Environmental changes fueling diseases (NY Times) Global change drivers and risk of infectious diseases (Nature) First reported cefiderocol-resistant E. coli in Canada (Clin Micro) E. coli cells explode (YouTube)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Thu, 13 Jun 2024 - 43min - 311 - 310: Starvation vs Dehydration: Who Loses, Who Wins?
TWiM explores the plasticity of the adult human small intestinal stoma microbiota, and survival and rapid resuscitation that permit limited productivity in desert microbial communities.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson.
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Links for this episode Plasticity of small intestinal stoma microbiome (Cell Host Micr) Desert microbial communities (Nat Comm) How soil microbes survive in the desert (Science Daily) Negev Desert (WikiCommons) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sun, 12 May 2024 - 58min - 310 - 309: Stomach Acid Can Be Your Friend
Today on TWiM, a charcuterie invasion, and how that acid in your stomach may protect from the invading hordes of microbes.
Hosts: Michael Schmidt, Petra Levin and Michele Swanson.
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Links for this episode 2024 Salmonella outbreak linked to charcuterie meats Multitier regulation of the E. coli extreme acid stress response by CsrA Commentary: Peeling the onion: additional layers of regulation in the acid stress response Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 26 Apr 2024 - 45min - 309 - 308: Living in a Community World
TWiM reviews a case of E. faecium bacteremia treated with combination bacteriophage and antibiotic therapy, and how dopamine receptor D2 confers colonization resistance via microbial metabolites.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson.
Guest: Mark O. Martin
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Links for this episode Matters Microbial Distinct Fusobacterium dominates colorectal cancer (Nature) Bacterial subspecies that might drive colon cancer (Nature) A bacterial strain linked to colon cancer (Nature) Spatial perspective on bacteria in tumors (Nature) Colorectal cancer in the young (Yale Med) Surface colonization by Flavobacterium johnsoniae promotes its survival (mBio) THOR, a model microbiome (mBio) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 13 Apr 2024 - 1h 07min - 308 - 307: Attaching and Effacing on a Pedestal
TWiM reviews a case of E. faecium bacteremia treated with combination bacteriophage and antibiotic therapy, and how dopamine receptor D2 confers colonization resistance via microbial metabolites.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson. Subscribe to TWiM (free) on Apple Podcasts, Spotify, Android, RSS, or by email.
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Links for this episode Vincent’s interviews at SXSW Bacteriophage and antibiotic therapy for E. faecium bacteremia (mBio) Dopamine receptor D2 confers colonization resistance (Nature) CDC’s Reports of Selected E. coli Outbreak Investigations Brett Finlay’s narrated EPEC animation Colonization resistance by gut microbial metabolome (ACS Chem Biol) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 30 Mar 2024 - 50min - 307 - 306: Spirulina Smoothies
TWiM discusses the identification of natural products from reconstructed ancient bacterial genomes, and how plant mRNAs move into a fungal pathogen via extracellular vesicles to reduce infection.
Hosts: Vincent Racaniello, Michael Schmidt, and Petra Levin.
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Links for this episode Natural products from ancient bacterial genomes (Science) Plant mRNAs move into fungal pathogens (Cell Host Microb) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 15 Mar 2024 - 52min - 306 - 305: The Marvel of MAC
TWiM reviews the ongoing cholera outbreak in Africa, and research showing that gut complement induced by the microbiota blocks pathogens and spares commensal bacteria.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson.
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Links for this episode Cholera in Southern Africa (Africa CDC) Deadly cholera outbreak in Africa (NY Times) Pediatric cholera in sub-Saharan Africa (Curr Op Ped) Gut complement spares commensals (Cell) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 02 Mar 2024 - 49min - 305 - 304: A New blue cheese-making fungus
TWiM reveals a new population in the blue cheese-making fungus Penicillium roqueforti and identification of a quorum-sensing autoinducer and siderophore in uropathogenic Escherichia coli.
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Links for this episode New blue cheese-making fungus (Evol Appl) Threat to Camenbert cheese (Guardian) French Cheese Under Threat (CNRS News) Fungadapt project (YouTube) Microbes Make the Cheese (ASM) Yersiniabactin in uropathogenic Escherichia coli (mBio) Public goods and cheating in microbes (Curr Biol) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 17 Feb 2024 - 57min - 304 - 303: Can Our Microbiome Break Our Hearts?
TWiM reveals a database of genome sequences of thousands of Mycobaterium tuberculosis, allowing association with resistance phenotypes to 13 antibiotics, and microbe-derived uremic solutes that enhance thrombosis potential in the host.
Hosts: Vincent Racaniello, Michael Schmidt, and Michele Swanson.
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Links for this episode M. tuberculosis genomes and antimicrobial resistance (PLoS Biol) The CRyPTIC consortium BashTheBug Zooniverse Microbial solutes enhance thrombosis (mBio) Can our microbiome break our heart? (mBio) Pathogenesis of cardiovascular disease (EJIFCC) How Kidneys Work Video (Mayo Clinic) What is a metaorganism? (Zoology) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 03 Feb 2024 - 56min - 303 - 302: Itching and Scratching and New Antibiotics
TWiM describes the mechanism for the S. aureus itch and scratch induced skin damage, and discovery of a novel class of antibiotics that targets the lipopolysaccharide transporter.
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Links:
S. aureus drives itch and scratch behavior (Cell)
Staph scratches its itch (Cell)
A new class of antibiotics (Nature)
A new type of antibiotic (Nature)
Novel antibiotic targets LPS transporter (Nature)
New antibiotic traps LPS (Nature)
Macrocyclic peptide drugs (Science)
Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Sat, 20 Jan 2024 - 54min - 302 - 301: Another Year is Microbial
A highly reduced TWiM team presents a study of the use of phage diversity in cell-free DNA to identify bacterial pathogens in human sepsis cases, and the evolution, persistence, and host adaptation of a gonococcal antimicrobial resistance plasmid that emerged in the pre-antibiotic era.
Hosts: Vincent Racaniello and Petra Levin
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Links for this episode Phages identify sepsis pathogens (Nat Micro) Gonococcal AMR plasmid from pre-antibiotic era (PLoS Genetics) Take the TWiM Listener survey!Music used on TWiM is by Ronald Jenkees.
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Wed, 03 Jan 2024 - 47min - 301 - 300: Marvels of Microbiology
On the occasion of TWiM’s 300th episode, we discuss how two college students found a new antibiotic in soil, Barbara Iglewski’s passing, and Elio returns for an appearance.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson. Guest: Elio Schaechter
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Links for this episode Barbara Iglewski dies Antimicrobial activity of P. nicotinovorans (MicroPubl Biol) 2 NWTC students found a new antibiotic in soil (Green Bay Press Gazette) ESKAPE bacteria group (Clover) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 16 Dec 2023 - 39min - 300 - 299: Teaching with TWiM
From ASM’s Conference for Undergraduate Educators 2023 in Phoenix, TWiM speaks with Amaya Garcia Costas and Gwendolyn Knapp about their approaches to undergraduate microbiology education, and how they use TWiM as part of their curricula.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson. Guest: Amaya Garcia Costas and Gwendolyn Knapp.
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Links for this episode ASMCUE 2023 Teaching in the time of COVID-19 (J Microbiol Biol Edu) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 02 Dec 2023 - 51min - 299 - 298: Impact of Lung Microbiome and Racial Disparities on Asthma
TWiM provides thoughts on providing better training for a non-academic career, and help celebrate Black in Microbiology Week with a 2023 paper by Ari Kozik, a co-founder of Black Microbiologists Association and Assistant Professor at the University of Michigan
Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, Petra Levin,
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Links for this episode Better training for a non-academic career (Nat Micro) Nature career site ASM career site Prosper - Unlocking postdoc career potential Airway microbiota in obesity and asthma (J Allerg Clin Immunol) A vision for human microbiome research (mSphere) Microbes in Models (ASM) Climate change and microbes (ASM) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Thu, 16 Nov 2023 - 59min - 298 - 297: Bacterial-electronic Sensor Pill
TWiM reviews how a coating of lipoproteins provides a stabilizing environment on the inner membrane of Bacillus subtilis spores, and a miniaturized device that integrates genetically engineered probiotic biosensors with a custom-designed photodetector and readout chip to track mediators of inflammation in the gastrointestinal tract
Hosts: Vincent Racaniello, Michael Schmidt, and Petra Levin, Subscribe to TWiM (free) on Apple Podcasts, Spotify, Google Podcasts, Android, RSS, or by email.
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Links for this episode Lipoproteins stabilize germination apparatus (J Bacteriol) A coating of liposomes (J Bacteriol) Biosensor to detect inflammatory molecules in the gut (Nature) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 04 Nov 2023 - 59min - 297 - 296: Bacterial Channels in Plant Cells
TWiM discusses a dispute about whether the mycobiome plays a role in the development of cancer, and the structure and function of channels that are delivered to plant cells by pathogenic bacteria.
Hosts: Vincent Racaniello, and Michael Schmidt.
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Links for this episode Cancer microbes disputed (Carl Zimmer) Fungal mycobiome and cancer (Nature) Revisiting fungal mycobiome and cancer (Nature) Bacteria deliver channels to plant cells (Nature) Ice nucleation by bacteria (YouTube) Gram-negative bacterial porins (Curr Protein Pept Sci) Xenopus oocyte toolbox (Cold Spring Harb Protocols) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 07 Oct 2023 - 47min - 296 - 295: Uncultured and Unmutable
TWiM explains how phages avoid tRNA-targeting host defenses, and discovery of a new antibiotic from an uncultured bacterium that binds to an immutable target.
Hosts: Vincent Racaniello, Michael Schmidt, and Petra Levin,
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Links for this episode Phages avoid tRNA-targeting host defenses (eLife) Sea phages Actinobacteriophage database New antibiotic from uncultured bacterium (bioRxiv) The age of infection (For Policy) Killing bacteria by teixobactin (Nature) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 22 Sep 2023 - 1h 06min - 295 - 294: You’ll Scream After Ice Cream
TWiM reveals that the ice cream manufacturing environment harbors psychrotrophic bacteria, and identification of a deadly bacterial strain causing widespread deaths of newborns in Uganda.
Hosts: Vincent Racaniello, Michael Schmidt, & Michele Swanson.
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Links for this episode Pyschrotrophic bacteria in ice cream plants (Appl Environ Micro) Creamery pays fine for contaminated ice cream (US DOJ) Paenibacillus infection of infants in Uganda (The Lancet) Deadly bacterial strain identified (Yale SOM) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 08 Sep 2023 - 52min - 294 - 293: Aerosol phage therapy, alpha-gal aptamers for MRSA
TWiM explains personalized aerosilized phage therapy for a chronic lung infection, and using the combination of antibiotic and a DNA molecule that binds alpha-gal to reduce S. aureus infection in vivo.
Hosts: Vincent Racaniello and Michael Schmidt
Subscribe to TWiM (free) on Apple Podcasts, Google Podcasts, Stitcher, Android, RSS, or by email.
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Links for this episode: Aerosolized phage therapy (Nat Comm) Alpha-gal aptamer and vancomycin for MRSA (Microorg) Alpha-gal syndrome (Front Allergy) Natural antibody protects against viral infection (virology blog) Oil pulling for improving oral health (Healthcare)Music used on TWiM is by Ronald Jenkees.
Send your microbiology questions and comments to twim@microbe.tv
Wed, 23 Aug 2023 - 1h 09min - 293 - 292: Breast Milk Bioactives
TWiM reveals that breast milk bioactives are essential for development of the infant microbiome and immunity, and how capsule mutants of Klebsiella pneumoniae can affect bacterial pathogenesis.
Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, Petra Levin,
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Links for this episode Diet-microbe-host interaction in early life (Science) Human Milk: An Ideal Food (Front Ped) Determinants of Diabetes in the Young (Ann NY Acad Sci) Gut microbiome in early childhood (Nature) Probiotics Infloran and Labinic Cell envelope defects of Klebsiella pneumoniae (Mol Micro) A cautionary tale (Mol Micro) Global mortality associated with bacterial pathogens (Lancet) Take the TWiM Listener survey!Music used on TWiM is composed and performed by Ronald Jenkees
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Fri, 11 Aug 2023 - 58min - 292 - 291: Biogeography of Tectonics and Teeth
TWiM explains how photoferrotrophic bacteria initiated plate tectonics over 2500 million years ago, and how two bacteria work together to cause childhood tooth decay.
Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, Petra Levin, Guest: Mark O. Martin Subscribe to TWiM (free) on Apple Podcasts, Spotify, Google Podcasts, Android, RSS, or by email.
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Links for this episode Bacteria initiated plate tectonics (Geophys Res Lett) Medea hypothesis (Sci Am) Earth’s ferrous wheel (Nature) The Great Dying (Nova) The Great Oxidation Event (ASM) Banded iron formations (EarthSphere) S. sputigena and tooth decay (Nat Comm) Acid tolerance mechanisms of S. mutans (Fut. Micro.) Halitosis patients' tongue biofilm (Microbiol. Open) Take the TWiM Listener survey!Music used on TWiM is by Ronald Jenkees
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Sat, 29 Jul 2023 - 1h 01min - 291 - 290: Houston, We Have Mimi Goldschmidt
From ASM Microbe 2023 in Houston, TWiM speaks with Mimi Goldschmidt about her remarkable career in microbiology which included training astronauts to safely bring moon rocks back to Earth.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin. Guest: Mimi Goldschmidt
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Links for this episode Mimi Goldschmidt (Wikipedia) Dr. Millicent “Mimi” Goldschmidt - Women in Microbiology (YouTube) Take the TWiM Listener survey!Music used on TWiM is by Ronald Jenkees
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Fri, 14 Jul 2023 - 47min - 290 - 289: Viral Defense and Counter-Defense
TWiM highlights viral defense and counter-defense: cGAS mediated ubiquitination to counter infection, and viral sponges that sequester nucleotide signals to inactivate immunity.
Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, Petra Levin.
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Links for this episode Ubiquitin-like conjugation by bacterial cGAS (Nature) Jumpin’ Jack Flash (TWiV 222) Viral sponges inactivate anti-phage immunity (Trends Micro) cGAS and CD-NTase enzymes (Curr Opin Struct Biol) Take the TWiM Listener survey!Music used on TWiM is by Ronald Jenkees
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Fri, 30 Jun 2023 - 57min - 289 - 288: Cancer and E. coli
TWiM describes a potential connection between a bacterial protein that damages DNA, and human cancers, and how to synthesize antimicrobial natural products from reconstructed bacterial genomes of the Middle and Upper Paleolithic.
Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, and Petra Levin
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Links for this episode Colorectal cancer and E. coli (Nature) Natural products from ancient bacterial genomes (Science) Underexplored bacteria reservoirs of antimicrobial lipopeptides (Front Chem) Fries With That Mammoth Burger? (Mother Jones) 25-40 million year old spores (Science) 250 million year old bacterium from salt crystal (Nature) 1918 influenza with Jeffery Taubenberger (TWiV 966) Take the TWiM Listener survey!Music used on TWiM is by Ronald Jenkees
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Fri, 09 Jun 2023 - 1h 06min - 288 - 287: When Replicas Do Not Replicate
TWiM investigates the high variability in the rate and amount of current production from microbial fuel cells, and how bacteria link their growth rate to external nutrient conditions via a protein that functions as a cellular rheostat.
Hosts: Vincent Racaniello, Michael Schmidt, and Petra Levin Subscribe to TWiM (free) on Apple Podcasts, Spotify, Google Podcasts, Android, RSS, or by email.
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Links for this episode Variability in microbial fuel cells (Appl Environ Micro) Electrodes for microbial fuel cells (Chemosphere) Microbial | electrochemical CO2 reduction (Joule) Growth rate and cell wall precursors (Nat Micro) Bacterial growth physiology (Front Micro) Take the TWiM Listener survey!Music used on TWiM is by Ronald Jenkees.
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Sat, 20 May 2023 - 51min - 287 - 286: Integrons and Invasion
TWiM reveals environmental integrons, bacterial genetic elements notorious for their role in spreading antibiotic resistance, and how Salmonella invasion is controlled by competition among intestinal chemical signals.
Hosts: Vincent Racaniello, Michael Schmidt, and Michele Swanson.
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Links for this episode Environmental integrons (Trends Micro) Integrons: agents of bacterial evolution (Nat Rev Micro) Rethinking microbial infallibility in the metagenomics era (Fems MicroMusic used on TWiM is by Ronald Jenkees.
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Fri, 05 May 2023 - 52min - 286 - 285: How Plague Got Deadly
TWiM reveals a new type of satellite virus that requires only phage tails for producing infectious virus particles, and that highly virulent plague bacteria differs from its innocuous enteric predecessor by its resistance to lysis by human complement.
Hosts: Vincent Racaniello and Michael Schmidt. Subscribe to TWiM (free) on Apple Podcasts, Spotify, Google Podcasts, Android, RSS, or by email.
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Links for this episode Viruses that steal bacteriophage tails (Cell Host Microbe) Y. pestis not susceptible to human complement (Appl Environ Micro) How Y. pestis got its pathogenic groove (Appl Environ Micro) Risks of another pandemic (TedEd) Take the TWiM Listener survey!Send your microbiology questions and comments to twim@microbe.tv
Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Sun, 23 Apr 2023 - 1h 11min - 285 - 284: Flies, Pigs, and Squid
TWiM reveals housefly dispersal of antimicrobial resistant bacteria, and a reproductive organ in squid linked to symbiotic bacteria.
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Links for this episode Housefly dispersal of antimicrobial resistant E. coli (Appl Micro Int) Antibiotic use in farming (Nature) Antimicrobial use in food producing animals (PLoS Glob Pub Health) Reproductive organ linked to symbiotic bacteria (mBio) Skype a Scientist Take the TWiM Listener survey!Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
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Sat, 08 Apr 2023 - 55min - 284 - 283: Quorum Sensing In The Gut
TWiM reveals quorum-sensing systems that regulate intestinal inflammation and permeability caused by P. aeruginosa, and how plasmids manipulate bacterial behavior through translational regulatory crosstalk.
Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, Petra Levin.
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Links for this episode Quorum-sensing in the intestine (mBio) Block quorum sensing, block biofilm (Antimicrob Agents Chemother) Plasmids manipulate bacterial behavior (PLoS Biol) Regulatory genes associated with integrative conjugative elements (J Bact) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Fri, 24 Mar 2023 - 58min - 283 - 282: At-home evolution with yeast
TWiM presents a protocol for evolving caffeine-tolerant yeast by high school students in the home, and how predator-prey dynamics change when multiple bacteria grow together in biofilms.
Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, Petra Levin. Guest: Mark O. Martin Subscribe to TWiM (free) on Apple Podcasts, Spotify, Google Podcasts, Android, RSS, or by email.
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Links for this episode Caffeine-tolerant yeast selected at home (microPub Biology) yEvo Lab Vision and change in undergraduate biology (NAS) CURE in a box (JMBE) EvolvingStem EvolvingStem: Evolution-in-action curriculum (BMC) Spatial ecology of predation (PNAS) Predatory bacteria: From curiosity to curative (Trends Micro) Combating antimicrobial resistance with predatory Bdellovibrio (YouTube) Bdellovibrio attacking E.coli (YouTube) From one, many (YouTube) Take the TWiM Listener survey!Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 10 Mar 2023 - 54min - 282 - 281: Microbes Making Jet Fuel
TWiM explains the synthesis in bacteria of new energy-dense biofuels that can replace rocket and jet fuels, and the use of nanopore sequencing to improve diagnosis and treatment of patients with serious infections.
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Links for this episode:
Biosynthesis of high energy biofuels (Joule)
Polyketide synthases in bacteria (PNAS)
Sequencing for diagnosis of serious infections (mBio)
Nanopore sequencing video (YouTube)
Emerging human pathogen Kodamaea ohmeri (Front. Micro)
Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 17 Feb 2023 - 59min - 281 - 280: They Forget To Divide
TWiM explains how magnesium modulates cell division frequency of a soil bacillus, and killing of fungi by Acinetobacter baumannii via a Type VI DNase Effector.
Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, and Petra Levin
Subscribe to TWiM (free) on Apple Podcasts, Google Podcasts, Stitcher, Android, RSS, or by email.
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Links for this episode:•Magnesium modulates cell division frequency (J Bacteriol) •A. baumannii kills fungi (mBio)
Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Sat, 28 Jan 2023 - 58min - 280 - 279: A Road Map For Successful Phage Therapy
TWiM describes successful phage therapy against a mycobacterial lung infection, and how encapsulation of the cell wall protects S. pneumoniae from its major peptidoglycan hydrolase and host defenses.
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Links for this episode:
Phage therapy against M. abscessus lung infection (Cell) Encapsulation of the septal cell wall protects S. pneumoniae from host defenses (PLoS Path) Letters read on TWiM 279Music used on TWiM is by Ronald Jenkees.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 13 Jan 2023 - 1h 01min - 279 - 278: Bacteria Sing The Blues
TWiM explores the relationship between the gut microbiome and depressive symptoms, and how purine nucleotides act as adjuvants to antibiotics.
Hosts: Vincent Racaniello, Michael Schmidt, and Michele Swanson
Subscribe to TWiM (free) on Apple Podcasts, Google Podcasts, Stitcher, Android, RSS, or by email.
Become a Patron of TWiM!
Links for this episode: Gut microbiota and depressive symptoms one and two (Nat Commun ) Microbiome influences depression (Phys.org) Gut bacteria and depression (Med Press) Mice behaving badly (TWiM 131) Gut microbiome in ASD (Front Cell Inf Micro) Transferring the blues (J Psych Res) Nucleotides as adjuvants to antibiotics (mBio)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Thu, 29 Dec 2022 - 59min - 278 - 277: To Stop or Not To Stop
On this episode of TWiM, we reveal widespread stop-codon recoding in bacteriophages that may regulate translation of lytic genes, and how Staphylococcus aureus inhibits Pseudomonas aeruginosa growth.
Hosts: Vincent Racaniello, Michael Schmidt, and Michele Swanson.
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Links for this episode Stop codon recoding in bacteriophages (Nat Micro) How S. aureus inhibits P. aeruginosa growth (J Bact) S. aureus small colony variants (Front Cell Infect Micro) Ken Timmis retires as journal editor (YouTube) Take the TWiM Listener survey!Music used on TWiM is composed and performed by Ronald Jenkees and used with permission
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Thu, 08 Dec 2022 - 58min - 277 - 276: Bacterial Multicellularity Near An Underground Stream
TWiM presents evidence that over half of human pathogenic diseases are impacted by climate change, and considers how a novel prokaryote discovered next to an underground stream illuminates the pathway to multicellularity.
Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Mark Martin.
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Links for this episode Climate change and pathogenic diseases (Nat Climate Change) Impacts of climate change on human diseases (MoraLAB) Cave bacteria illuminate pathway to multicellularity (eLife) Commentary on novel cave bacteria (eLife) Karst landscapes (National Park Service) Take the TWiM Listener survey!Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Thu, 24 Nov 2022 - 1h 06min - 276 - 275: The Myth of Clonality
TWiM reveals high rates of co-transformation of plasmids in E. coli overturns the clonality myth, and bacterial membrane vesicles as a novel strategy for extrusion of the antimicrobial bismuth in H. pylori.
Hosts: Vincent Racaniello, Michael Schmidt, and Petra Levin
Links for this episode The myth of clonality (Sci Rep) Bacterial membrane vesicles extrude bismuth (mBio) Gastric acid levels must decrease (World J Gastroenterol) Take the TWiM Listener survey!Become a patron of TWiM.
Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 11 Nov 2022 - 1h 05min - 275 - 274: Bacterial Endosymbionts Block Giant Viruses
Mark Martin returns to TWiM to join the discussion of how to design a complex gut microbiome, and protection of protists from virus infection by intracellular bacterial symbionts.
Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, and Petra Levin
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Links for this episode Design of a complex gut microbiome (Cell) Defensive symbiosis against giant viruses (PNAS) Take the TWiM Listener survey!Music by Ronald Jenkees.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Thu, 20 Oct 2022 - 57min - 274 - 273: The Value of Wiping
TWiM reveals how to inactivate norovirus on formica surfaces, and how to achieve antibiotic resistance by suppression of a frameshift mutation in an essential gene.
Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, and Petra Levin Subscribe to TWiM (free) on Apple Podcasts, Spotify, Google Podcasts, Android, RSS, or by email.
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Links for this episode Effect of wiping on norovirus inactivation (Appl Env Micro) Chlorine dilution calculator (Ontario Pub Health) Antibiotic resistance by frameshift suppression (PNAS) Resistance to rifampicin (Nature) Take the TWiM Listener survey!Music by Ronald Jenkees.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 30 Sep 2022 - 1h 00min - 273 - 272: Metabolism’s Got Rhythm
TWiM explores the activation of natural product synthesis using CRISPR interference in Streptomyces, and how light/dark and temperature cycling modulate Electron Flow in Pseudomonas aeruginosa biofilms.
Hosts: Vincent Racaniello, Michele Swanson, and Petra Levin
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Links for this episode Activating natural product synthesis (Nucleic Acids Res) Light and temperature modulate biofilm electron flow (mBio) Take the TWiM Listener survey!Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 16 Sep 2022 - 51min - 272 - 271: Microbe vs Microbe
TWiM presents a novel mucosal COVID-19 vaccine based on a bacteriophage capsid, and potentiation of C. difficile infection severity by the gut bacterial community.
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Links for this episode:
Bacteriophage based COVID-19 vaccine (mBio) Gut microbiome potentiates C. difficile disease (mBio) Letters read on TWiM 271Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Thu, 25 Aug 2022 - 1h 04min - 271 - 270: Magnets and Salt Improve Plastics Production by Archaea
TWiM explores the use of Archaea to produce plastics from molasses wastewater, and a bacterial defense against bacteriophage infection that involves depletion of deoxynucleotides.
Become a patron of TWiM.
Links for this episode Improving plastics production by Archaea (Appl Environ Micro) Biodegradability of PHA (Green Chem) What does tesla mean for an MRI and its magnet? (GE) Bacteria deplete nucleotides to block phages (Nat Micro) Antiphage hotspots in bacteria (TWiM 265) Take the TWiM Listener survey!Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Tue, 09 Aug 2022 - 52min - 270 - 269: Bacterial But Not Microbial
TWiM reviews discovery of a bacterium that is visible to the naked eye, and reversible resistance to bacteriophage by shedding of the bacterial cell wall.
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Links for this episode A bacterium that is not a microbe (Science) Overwhelming microbial greatness (TWiM 261) Medical illustrator Kellie Holoski Bacteriophage resistance by shedding cell wall (Open Biol) Who came first, monderms or diderms? (Nat Ecol Evol) Letters read on TWiM 269 Take the TWiM Listener survey!Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 22 Jul 2022 - 1h 09min - 269 - 268: Aspergillus and Aspergillum
TWiM discusses citizen science surveillance of drug-resistant Aspergillus in garden soil, and the mechanism of action of a copper dependent antibiotic.
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Links for this episode Fanny Hesse (Microbial Menagerie) Citizen science surveillance of Aspergillus (App Envir Micro) Aspergillum (Wikipedia) DMDC, copper dependent antibiotic (Infect Immun) National Summer Undergraduate Research Project Letters read on TWiM 268 Take the TWiM Listener survey!Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 08 Jul 2022 - 1h 05min - 268 - 267: The Honey Badger of Pathogens With Heran Darwin
From ASM Microbe 2022 in Washington, DC, Heran joins TWiM to discuss her career and her work on the agent of tuberculosis, Mycobacterium tuberculosis.
Hosts: Vincent Racaniello, Michael Schmidt, and Michele Swanson Guest: Heran Darwin
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Links for this episode Honey badger of pathogens (EMBO Rep) Pup-proteasome system (PNAS) Cytokinin signaling in M. tuberculosis (mBio) Bandwagoning (EMBO Rep) Take the TWiM Listener survey!Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 24 Jun 2022 - 47min - 267 - 266: Bacteria That Can Record
TWiM explains how spindle-shaped Archaeal viruses evolved from rod-shaped ancestors to package a larger genome, and transcriptional recording by CRISPR acquisition from RNA.
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Links for this episode From rods to spindles (Cell) Spindle-shaped virus movie (Cell) Bacteria that record (Science) Transcriptional recording with CRISPR (Nature) Letters read on TWiM 266 TWiM Listener surveyMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 03 Jun 2022 - 51min - 266 - 256: Antiviral Hotspots and Desiccation Tolerance
TWiM explains the discovery of hotspots of genetic variation containing reservoirs of anti-phage systems in E. coli phages and their parasitic satellites, and pathogen desiccation tolerance promoted by hydrophilins.
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Links for this episode Phage and satellite antiviral systems (Cell Host Micro) Hydropilins promote desiccation tolerance (Cell Host Micro) Letters read on TWiM 265 TWiM Listener surveyMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 20 May 2022 - 56min - 265 - 264: Antimicrobial Antipsychotics
TWiM reveals that the atypical antipsychotic quetiapine promotes multiple antibiotic resistance in E. coli, and treatment with Bifidobacterium lactis probiotic benefits patients with coronary artery disease.
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Links for this episode:
Antipsychotic promotes antimicrobial resistance (J Bact) Probiotic benefits patients with coronary artery disease (mSystems) B. lactis and Alzheimer’s in mice (Eur J Nutr)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 06 May 2022 - 1h 05min - 264 - 263: Lavender and Catheters
TWiM explains the use of lavender oil to disrupt Listeria biofilms, and how treatment of catheters with liquid silicone reduces associated urinary tract infections.
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Links for this episode Lavender oil prevents biofilms (Lett Appl Micro) Silicone-infused catheters reduce infection (eLife) Viable but not culturable (TWiM 179) Letters read on TWiM 263 TWiM Listener surveyMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 15 Apr 2022 - 1h 03min - 263 - 262: Spot on With T4SS Modulators
TWiM welcomes new host Petra, and explains how a small protein helps ensure that E. coli utilizes a preferred carbon source, and a screening strategy to identify inhibitors of the type IV secretion system that is essential for virulence of a variety of bacterial pathogens.
Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, and Petra Levin
Subscribe to TWiM (free) on Apple Podcasts, Google Podcasts, Stitcher, Android, RSS, or by email.
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Links for this episode: A small protein regulates carbon utilization (PNAS) Inhibitors of type IV secretion systems (mBio) Letters read on TWiM 262Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 01 Apr 2022 - 57min - 262 - 261: Overwhelming Microbial Greatness
Mark returns to TWiM to join in a discussion of soil microbiota as game-changers in restoration of degraded lands, and discovery of a centimeter-long bacterium, the biggest yet discovered.
Guest: Mark O. Martin
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Links for this episode:
Game-changing soil microbiota (Science) A World Without Soil by Jo Handlesman A World Without Soil video (YouTube) Centimeter-long bacteria (bioRxiv) How large can a bacteria get? (YouTube) Giant bacteria (YouTube) Three faces of Thiomargarita (Small Things Considered) The microbe that could be seen (Small Things Considered) Energetics of the eukaryotic edge (Small Things Considered) A lakeside tale (Small Things Considered) Letters read on TWiM 261Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 18 Mar 2022 - 1h 19min - 261 - 260: Carnivorous Vulture Bees
In this food-centric TWiM, we reveal the microbiomes of carnivorous vulture bees and of Gala apples from all over the world.
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Links for this episode Microbiome of vulture bees (mBio) Bees previously in TWiM 245 Microbiome of Gala apples (Envir Micro) Apple flower microbiome (mBio) TWiM Listener surveyMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 25 Feb 2022 - 44min - 260 - 259: Sea Sawdust
Mark Martin returns to TWiM for a discussion of the frightening global burden of bacterial antibiotic resistance, and a solution to the problem of daylight nitrogen fixation in a cyanobacterium, despite the incompatibility of nitrogenase with oxygen produced during photosynthesis.
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Links for this episode:
Global bacterial antimicrobial resistance (Nat Micro) Cancer moon shot (NCI) When antibiotics don’t work (TED) Cyanobacterium buoyancy (Nat Micro)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Mon, 14 Feb 2022 - 1h 01min - 259 - 258: A Tick’s Meal
TWiM explains how bacterial symbionts regulate tick blood feeding activity, and the reasons why antibiotics exist.
Hosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt
Subscribe to TWiM (free) on iTunes, Google Podcasts, Stitcher, Android, RSS, or by email.
Become a Patron of TWiM!
Links for this episode:
Symbionts help ticks to feed (Cell Host Microbe) Why do antibiotics exist? (mBio) Shorter is still better (J Hosp Med) Shorter vs longer antibiotic courses (J Hosp Med) Francis Tally and tigecycline (Clin Inf Dis)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 21 Jan 2022 - 52min - 258 - 257: I have one word for you: plastics
On this episode of TWiM, how phages prevent other phages from invading their hosts without blocking their own reproduction, and plastic-degrading potential of microbes across the Earth.
Become a patron of TWiM.
Links for this episode:
Prophages encode phage-defense systems with cognate self-immunity (Cell Host Microbe) Prophages self-destruct to eliminate competitors (Cell Host Microbe) Plastic-degrading potential across global microbiome (mBio) Plastics in our foods (ENV media)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 07 Jan 2022 - 1h 01min - 257 - 256: An mRNA Vaccine Against Ticks
TWiM discusses antigenic variation within dengue virus serotypes, and an mRNA vaccine that induces antibodies against tick proteins and prevents transmission of the Lyme disease agent.
Hosts: Vincent Racaniello, Elio Schaechter, Michael Schmidt and Michele Swanson
Subscribe to TWiM (free) on iTunes, Google Podcasts, Stitcher, Android, RSS, or by email.
Links for this episode:
Dengue virus antigenic variation (eLife) mRNA vaccine induces tick resistance (Sci Transl Med)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Thu, 16 Dec 2021 - 41min - 256 - 255: Fleaing The Plague
TWiM reveals a study showing that positive interactions among bacteria are far more common than previously thought, and how acquisition of a single gene enabled Yersinia pestis to expand the range of mammalian hosts that sustain flea-borne plague.
Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, and Michael Schmidt
Subscribe to TWiM (free) on iTunes, Google Podcasts, Stitcher, Android, RSS, or by email.
Become a Patron of TWiM!
Links for this episode:
Positive interactions are common among bacteria (Sci Adv) Expansion of mammal hosts for flea-borne plague (PLoS Path) Hurling fleas (TWiM #80)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Sun, 21 Nov 2021 - 52min - 255 - 254: Episymbionts Are Good For You
Mark Martin returns to TWiM for a discussion of the observation that Gram’s stain does not cross the bacterial cytoplasmic membrane, and suppression of gingival inflammation and bone loss through host modulation caused by episymbiotic Saccharibacteria.
Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, and Michael Schmidt
Guest: Mark O. Martin
Subscribe to TWiM (free) on iTunes, Google Podcasts, Stitcher, Android, RSS, or by email.
Become a Patron of TWiM!
Links for this episode Gram’s stain does not cross cytoplasmic membrane (ACS Chem Biol) Gram stain protocol (pdf) Chemical mechanism of Gram’s stain (J Bact) Episymbiotic Saccharibacteria suppress disease (Host Cell Microbe) Microedu listserve TWiM Listener surveyMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Sat, 06 Nov 2021 - 1h 10min - 254 - 253: Cell growth and cell size with Petra Levin
Petra Levin joins TWiM to tell three stories from her laboratory: how starvation induces shrinkage of the bacterial cytoplasm; plasticity of E. coli cell wall and how it influences antibiotic resistance across different environments; and induction of antibiotic resistance by Triclosan.
Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, and Michael Schmidt Guest: Petra Levin
Become a Patron of TWiM!
Links for this episode Starvation induces E. coli shrinkage (PNAS) Plasticity of cell wall metabolism and antibiotic resistance (eLife) Triclosan induces antibiotic resistance (Antimicro Agents Chemother) TWiM Listener surveyMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Thu, 28 Oct 2021 - 1h 03min - 253 - 252: Electrifying microbial fuel cells
On this episode of TWiM, using colicins to ferry DNA into cells through an iron transporter, and construction of highly efficient microbial fuel cells that produce more electrical current than previously observed.
Links for this episode:
Colicins used to ferry DNA into cells (mBio) Highly efficient microbial fuel cells (Science) Silver assists fuel cells (Science) Biological transport goes the extra mile (PNAS) Long distance transport in cable bacteria (PNAS) Columbia U pledges fossil free buildings (Columbia U)Become a patron of TWiM.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 08 Oct 2021 - 57min - 252 - 251: Biofilms, Coronaviruses, and a Shigella Vaccine
TWiM explores the role of biofilms in infection by coronaviruses, and development of a Shigella vaccine using outer membrane vesicles derived from Salmonella
Become a patron of TWiM.
Links for this episode Biofilms and coronaviruses (Appl Envir Micro) Outer membrane vesicle vaccine (Appl Envir Micro) TWiM Listener surveyMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Sat, 02 Oct 2021 - 57min - 251 - 250: E-scaffolds and paper stickers
On this episode, an electrochemical scaffold that delivers safe doses of hypochlorous acid to treat wound infections in humans, and a method for sampling and monitoring bacteria and viruses on surfaces using plain paper stickers.
Hosts: Vincent Racaniello, Michele Swanson, and Michael Schmidt
Links:
E-scaffolds on TWiM 143 The EPS matrix (J Bact) Integrated HOCL-producing E-scaffold (AAM) Surface sampling bacteria with paper stickers (AEM) Surface sample viruses with paper stickers (Sci Rep)Become a Patron of TWiM!
Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 10 Sep 2021 - 1h 05min - 250 - 249: Phage-pathogen and toxin-antitoxin conflicts
TWiM reveals how temporal shifts in antibiotic resistance elements govern phage-pathogen conflicts, and the intracellular localization of toxin-antitoxin proteins in E. coli.
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Links for this episode:
Phage-pathogen conflicts (Science) A ‘Trap-Door’ Strategy for Mobile Element Escape (Front Micro) Location of toxin-antitoxin proteins (mBio) Babel-Jerusalem Bookstore Letters read on TWiM 249Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 27 Aug 2021 - 48min - 249 - 248: Borgs Are Real
Mark Martin returns to TWiM to discuss ways to increase diversity in our field, and the discovery of Borgs, giant extrachromosomal elements with the potential to augment methane oxidation. Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, and Michael Schmidt
Guest: Mark O. Martin
Subscribe to TWiM (free) on iTunes, Google Podcasts, Stitcher, Android, RSS, or by email.
Become a Patron of TWiM!
Links for this episode:
Unacknowledged privilege (Mol Biol Cell) Black Microbiologists Association Beginner’s Guide to Minority Professor Hires (ASM)Academic Career Readiness Assessment (UCSF) Annual Biomed Res Conference for Minority Students Lessons from Plants by Beronda Montgomery Giant extrachromosomal BORGS (bioRxiv)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 13 Aug 2021 - 58min - 248 - 247: Therapy With Paleofeces and Phages
TWiM explores whether ‘rewilding’ is a way to get back our missing gut microbes, and failure of bacteriophage therapy due to the production of neutralizing antibodies.
Become a patron of TWiM.
Links for this episode Gut microbiota through an evolutionary lens (Science) You’re missing microbes (NY Times) There is no ‘healthy’ microbiome (NY Times) Antibody limits bacteriophage therapy (Nat) Phage therapy on TWiEVO #44 Graham Hatfull on TWiV #87 TWiM Listener surveyMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 30 Jul 2021 - 54min - 247 - 246: Intracellular niche and passage
The TWiM folk explore disruption of a Burkholderia intracellular niche by a cell death program, and an increase in Brucella infectiousness after intracellular passage.
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Links for this episode:
Disrupting intracellular niche (mBio) Intracellular passage increases infectiousness (Infect Immun) Type IV secretion systems (Front Micro)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Mon, 19 Jul 2021 - 56min - 246 - 245: Bacteria that protect bees from fungi
In this episode, how polysaccharides keep cyanobacteria afloat in the oceans so that they can carry out photosynthesis, and a symbiotic bacterium that protects honey bees from fungal infections.
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Links for this episode:
Bacterial blooms and polysaccharides (eLife) Social life of cyanobacteria (eLife) Bacteria that protect bees from fungi (mBio) First 21 days of a bee’s life (YouTube) antiSMASH (Nucl Acids Res) Delaney Miller’s websiteMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Sat, 03 Jul 2021 - 50min - 245 - 244: Chewing for chicha
Foodie TWiM reveals that bacteria in human saliva are major components of Ecuadorian indigenous beers, and an unusual E. coli that produces atypical light cream-colored colonies in chromogenic agar.
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Links for this episode:
Saliva bacteria in indigenous beers (Peer J) Unusual behavior of E. coli ST59 (Appl Envir Micro) One Health (CDC)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Tue, 22 Jun 2021 - 56min - 244 - 243: Beef and bacillus
TWiM continues its food arc with an examination of the effect of peroxyacetic acid spray on the microbiome and sensory properties of beef, and explores asymmetry of the cell division machinery during sporulation.
Links for this episode:
Effect of peroxyacetic acid on beef (Appl Envir Micro) Peracetic acid sterilization (CDC) Different cuts of beef (S. Clyde Weaver) Profiling the Poglianos (TWiM 115) Cell division machinery asymmetry in sporulation (eLife) Kamala Sohonie by Kanika Khanna India COVID SOSMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 04 Jun 2021 - 51min - 243 - 242: Sourdough Starter Microbiomes
TWiM reveals the microbiome of sourdough starter cultures, and discovery of a novel family of prokaryotic nanocompartments involved in the metabolism of sulfur.
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Links for this episode Sourdough starter microbiomes (eLife) Prokaryotic nanocompartments (eLife) TWiM Listener surveyMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Thu, 20 May 2021 - 54min - 242 - 241: What Does Flu Do to Your Poo?
TWiM explains how Vibrio biofilms are dispersed by polyamine signals, and the induction of inappetence by respiratory virus infection which causes alteration of the gut microbiome.
Subscribe to TWiM (free) on Apple Podcasts, Spotify, Google Podcasts, Android, RSS, or by email.
Become a patron of TWiM.
Links for this episode Regulation of Vibrio biofilms by polyamines (eLife) Cyclic di-GMP (pdf) Respiratory virus infection induces inappetance (mBio) Letters read on TWiM 241 TWiM Listener surveySend your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 07 May 2021 - 1h 04min - 241 - 240: Aspirin, colorectal cancer, and Fusobacterium
TWiM reviews aspirin modulation of Fusobacterium nucleatum, a microbe that has been associated with colorectal cancer, and Elio tells us ‘What are vaccines’, a talk he recently gave to members of his community.
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Links for this episode:
Elio’s What are Vaccines? (pdf) Jenner Museum Aspirin modulation of Fusobacterium (mBio) Fecal transplant for C. difficile (NEJM) Fecal microbiota transplantation (NEJM) Fecal microbiota transplant for dysbiosis (NEJM)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Mon, 26 Apr 2021 - 1h 01min - 240 - 239: The Phoenix of Bacteria
The TWiM team reviews how variants of P. aeruginosa survive antimicrobial treatment, and a decrease in the antimicrobial resistance of the gut microbiome in the presence of the fungus C. albicans.
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Links for this episode:
Phoenix colony variants of P. aeruginosa (AAC) Candida and the gut microbiota (mSphere)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 09 Apr 2021 - 53min - 239 - 238: Parkinson’s disease gut microbiome
Elio reveals his thoughts on the big themes of modern microbiology, followed by an analysis of the gut microbiome in patients with Parkinson’s disease.
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Links for this episode:
Parkinson’s disease gut microbiome (NPJ Parkinsons) Sequencing data as compositions (Bioinformatics) Gut microbiota in mouse Parkinson’s model (Cell)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Sun, 28 Mar 2021 - 56min - 238 - 237: Ten years of TWiM, a quality quorum
To celebrate ten years, TWiM asks former hosts and guests to provide their thoughts on how microbiology has contributed to our understanding of the microbial world.
Links for this episode:
Neisseria LINES up: TWiM #1Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Thu, 11 Mar 2021 - 1h 05min - 237 - 236: Gossamer wings and symbionts on the sea bottom
In this episode, hiring and training expectations for future biomedical life sciences faculty, and the roles of bacterial symbionts in deep-sea hydrothermal vent tubeworms.
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Links for this episode:
Expectations for life sciences faculty (Life Sci Edu) Academic career readiness assessment (UCSF) Tubeworm bacterial symbionts (eLife) Traveling on the Alvin (Dark Life II) Image creditMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Sat, 20 Feb 2021 - 43min - 236 - 235: Green algae and fatty acids
In this episode, how DNA of giant viruses has contributed extensively to the genome of green algae, and inhibition of E. coli virulence by a metabolic product of arachidonic acid in the intestinal epithelium.
Links for this episode:
Giant viral DNA shapes genomes of green algae (Nature) James Van Etten Darwin’s Radio Arachidonic acid and E. coli virulence (mBio) How a pathogenic E. coli infection beginsMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 05 Feb 2021 - 1h 04min - 235 - 234: Corkscrewing through snot
The TWiM team reviews Salmonella colonization of three-dimensional miniature intestinal organs, and identification of a circadian clock in a non-photosynthetic prokaryote.
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Links for this episode:
Salmonella colonization of enteroids (mBio) Circadian clock in nonphotosynthetic prokaryote (Science) Image creditMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Thu, 21 Jan 2021 - 44min - 234 - 233: Antivirals made by bacteria
The TWiM team reviews the movie Jezebel, played against the background of the yellow fever epidemic of 1853 in New Orleans, and prokaryotic viperins, ancestors of the eukaryotic enzymes that synthesize antiviral molecules.
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Links for this episode Jezebel (Wikipedia) Prokaryotic viperins (Nature) A cell protein that synthesizes antivirals (virology blog) Dr. Aude Bernheim’s training and gender equity contributions TWiM Listener surveySend your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 08 Jan 2021 - 53min - 233 - 232: Microbial nanowires
TWiM explores the use of a bacterial protein to make highly conductive microbial nanowires, and how modulin proteins seed the formation of amyloid, a key component of S. aureus biofilms.
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Links for this episode Amyloid formation for S. aureus biofilms (eLife) Highly conductive microbial nanowires (Nat Chem Biol) Uncovering Nature’s electronics (Nature) Activating Nature’s electrical grid (Bioeng) Bacteria that exhale electricity (SyFyWire) Microbial transistors (TWiM 14) TWiM Listener surveySend your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Thu, 24 Dec 2020 - 55min - 232 - 231: It’s a microbe-eat-microbe world
Mark Martin returns to TWiM for a discussion of a predatory bacterium appropriately named Vampirococcus lugosii, and Elio reveals how bacteria can be used on the International Space Station to efficiently extract rare earth elements in microgravity.
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Links for this episode:
Space Station biomining (Nat Comm) Reductive evolution in a predatory bacterium (bioRxiv)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Thu, 10 Dec 2020 - 54min - 231 - 230: Ancient bacterial DNA
In this episode of TWiM, control of Campylobacter in raw chicken by zinc oxide nanoparticles in packaging material, and Salmonella enterica genomes from a16th century epidemic in Mexico.
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Links for this episode:
Zinc oxide nanoparticles in raw meat packing (Appl Env Micro) Campylobacter, an emerging foodborne pathogen (Emerg Inf Dis) Ancient bacterial DNA (Microb Genom) Salmonella enterica from 16th century outbreak (Nature)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 27 Nov 2020 - 55min - 230 - 229: Dirt is not simple
In this episode of TWiM, the hidden biochemical diversity in soil-dwelling Actinobacteria that could lead to a second Golden Era of antibiotic discovery, and structures of glideosome components reveals the mechanism of gliding in apicomplexan parasites.
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Links for this episode:
Cryptic or silent? (mBio) The Streptomyces chromosome (Ann Rev Gen) Engineering Nature’s Medicines (pdf) Apicomplexan glideosome (Comm Biol)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Thu, 05 Nov 2020 - 49min - 229 - 228: Black in Microbiology with Ninecia Scott and Chelsey Spriggs
Ninecia and Chelsey, two of the founders of Black in Microbiology, join TWiM to discuss the goals of the organization, then we reveal survival of Deinococcus bacteria for 3 years in space, an experiment that addresses the panspermia hypothesis for interplanetary transfer of life.
Guests: Ninecia Scott and Chelsey Spriggs
You can watch this episode at https://youtu.be/1o1hh0I4rio
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Links for this episode Black in Microbiology Deinococcus DNA damage in space (Front Micro) Monthly myco-talks (Uni Exeter)Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Fri, 23 Oct 2020 - 53min - 228 - 227: The light and dark sides of the fungal world
TWiM presents an episode for mycophiles: how bacteria disarm mushroom pathogens, and the role of the CARD9 protein in protective immunity against pulmonary cryptococcosis.
Hosts: Vincent Racaniello, Elio Schaechter, Michael Schmidt and Michele Swanson
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Links for this episode:
Black in Microbiology How bacteria disarm mushroom pathogens (PNAS) A bacterial battleground (Science) CARD9 needed for fungal defense (mBio) OneHealth: Fungal pathogens (AAM) Image creditMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Tue, 13 Oct 2020 - 48min - 227 - 226: Two microbes you might not know
TWiM presents two unusual microorganisms, Erysipelothrix rhusiopathiae, heard by Elio in an episode of Doc Martin, and Roseomonas mucosa, which is being used to treat atopic dermatitis.
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Links for this episode:
Erysipelothrix rhusiopathiae Treating atopic dermatitis with R. mucosa (Sci Trans Med) Overview of sphingolipid metabolism (Adv Exp Med Biol) Lyme disease and other tick-borne infections (MTM 118) Image creditMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Thu, 24 Sep 2020 - 1h 09min - 226 - 225: Lag phase is no slouch
The TWiM team explores how delivery of an enzyme into competitor cells leads to synthesis of (p)ppApp, depletion of ATP, deregulation of metabolic pathways, and cell death, and a refinement of our typical view of bacterial lag phase as a period of nonreplication.
Hosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt
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Links for this episode:
Killing competitors by synthesis of (p)ppApp (Nature) Lag phase is a dynamic period (J Bact) Image creditMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 11 Sep 2020 - 1h 03min - 225 - 224: One hundred million year old bacteria
The TWiM team reveals the genetic mysteries of the Dead Sea Scrolls from sequencing of DNA, and 100 million year old living bacteria recovered from marine sediments.
Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson and Michael Schmidt
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Links for this episode:
Elio’s Memoirs Genetic mysteries of Dead Sea Scrolls (Cell) 100 million year old bacteria under the sea (Nat Comm) Image creditMusic used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments to twim@microbe.tv
Fri, 28 Aug 2020 - 1h 15min - 224 - 223: The smell of soil
The TWiMmers explore detection of SARS-CoV-2 on surfaces in an ophthalmology examination room, the ability of stressed populations of Yersinia bacteria to survive antimicrobial treatment within host tissues, and how volatile organic chemicals produced by soil microbes attract arthropods which in turn disperse bacterial spores.
Subscribe to TWiM (free) on Apple Podcasts, Google Podcasts, Android, RSS, or by email.
Become a patron of TWiM.
Links for this episode SARS-CoV-2 RNA in ophthalmology room (JAMA Ophth) Stressed Yersinia survive doxycycline treatment (mBio) Volatiles, a soil arthropod, and Streptomyces spore dispersal (Nature) Image creditSend your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Sat, 15 Aug 2020 - 1h 01min - 223 - 222: Biosensors in bacteria
Mark Martin joins TWiM to describe nano-sized parasitic bacteria that inhabit humans, and the construction of whole-cell biosensors for detecting arsenic in drinking water.
Hosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt
Guest: Mark O. Martin
Subscribe to TWiM (free) on Apple Podcasts, Google Podcasts, Android, RSS, or by email.
Become a patron of TWiM.
Links for this episode Ultra-small parasitic bacteria in humans (Cell Rep) Arsenic (WHO) Arsenic and drinking water (CDC) Arsenic biosensor in bacteria (Appl Envir Micro)Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.
Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Thu, 30 Jul 2020 - 1h 19min - 222 - 221: Weapon of mucus destruction, WMD
TWiM reveals a potential mucus-busting weapon for patients with cystic fibrosis, and bacteria in the intestinal tract that can oxidize cholesterol, leading to lower levels of the lipid in blood.
Subscribe to TWiM (free) on Apple Podcasts, Google Podcasts, Android, RSS, or by email.
Become a patron of TWiM.
Links for this episode Biofilm eradication with nitric oxide release (ACS Inf Dis) Pseudomonas quorum sensing network (Protein) Cholesterol metabolism by gut bacteria (Cell Host Microbe) Microbes might manage your cholesterol (Harvard Gazette) TWiM Listener surveySend your microbiology questions and comments (email or recorded audio) to twim@microbe.tv
Thu, 16 Jul 2020 - 1h 08min
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