TWiM 29: Death and an iron-loaded spike

phage spikeHosts: Vincent Racaniello and Stanley Maloy

On episode #29 of the podcast, Vincent and Stanley review how a phage pierces the cell membrane with an iron-loaded spike, and two programmed cell death systems in E. coli.

Download TWiM #29 (46 MB, .mp3, 63 minutes).

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Send your microbiology questions and comments to twim@microbe.tv

TWiM 28: Not unorganized bags of enzymes

caulobacterHosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt

On episode #28 of the podcast, Vincent, Michael, and Elio review how competition within a host drives virulence of Streptococcus pneumoniae, and the expanding universe of the bacterial cytoskeleton.

 

Download TWiM #28 (53.5 MB, .mp3, 77 minutes).

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TWiM 27: An inflamed gut is good for Salmonella

Hosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt

On episode #27 of the podcast, Vincent, Elio, and Michael review how inflammation allows Salmonella to compete with fermenting gut microbes, and a riboswitch in bacterial and Archeal species that is triggered by fluoride.

Download TWiM #27 (52 MB, .mp3, 75 minutes).

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Listener pick of the week:

Trudy – The Ghost Map by Steven Johnson

Send your microbiology questions and comments to twim@microbe.tv

TWiM 26: Suum cuique

minitrapHosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt

On episode #26 of the podcast, Vincent, Elio, and Michael discuss the finding of Sutterella species in the gut of autistic children, and methods for cultivating oral bacteria.

Download TWiM #26 (54 MB, .mp3, 75 minutes).

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TWiM 25: Magnetotactic bacteria and totally drug resistant TB

break_magnetHosts: Vincent Racaniello, Michael Schmidt, and Elio Schaechter

On episode #25 of the podcast, Vincent, Elio, and Michael review bacteria that use the earth’s magnetic field for navigation, and identification of totally drug resistant Mycobacterium tuberculosis.

Download TWiM #25 (53 MB, .mp3, 77 minutes).

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Send your microbiology questions and comments to twim@microbe.tv

TWiM 24: This year in microbiology

microbiomeHosts: Vincent Racaniello, Michael Schmidt, and Cliff Mintz

On episode #24 of the podcast, Vincent, Michael, and Cliff review ten compelling microbiology stories from 2011.

Ten Microbiology stories from 2011:

  1. Bean sprouts and E. coli O104H4 (TWiM 9, 20)
  2. H. pylori and asthma (TWiM 11)
  3. Airborne H5N1 influenza (TWiV 159)
  4. The microbiome (TWiM 2, 15, 19)
  5. Synthetic biology (TWiM 12)
  6. Probiotics (TWiM 24)
  7. Symbiosis (TWiM 8, 10, 17, 21)
  8. Turning E. coli into a pathogen (TWiM 18)
  9. Mammalian endothermy restricts fungi (TWiM 16)
  10. Microbiology 911 (TWiM 22)

Download TWiM #24 (57.5 MB, .mp3, 79 minutes).

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TWiM 23: Fighting antibiotics with toxic gas and starvation

transportHosts: Vincent Racaniello, Michael Schmidt, Jo Handlesman, and Elio Schaechter

On episode #23 of the podcast, Vincent, Jo, Elio, and Michael explain how a swarming bacterium helps disperse a non-motile fungus, and bacterial antibiotic tolerance mediated by hydrogen sulfide and starvation responses.

Download TWiM #23 (52.5 MB, .mp3, 76 minutes).

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Send your microbiology questions and comments to twim@microbe.tv

TWiM 22: Microbiology 911

Dr. SacchettiHosts: Vincent Racaniello, Michael Schmidt, and Al Sacchetti

On episode #22 of the podcast This Week in Microbiology, Vincent and Michael speak with Alfred Sacchetti, MD, Chief of Emergency Services at Our Lady of Lourdes Medical Center, about microbial infections encountered in the emergency room.

Download TWiM #22 (48 MB, .mp3, 98 minutes).

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Links for this episode:

Send your microbiology questions and comments to twim@microbe.tv

TWiM 21: Symbiotic margheritas

catenula

Hosts: Vincent Racaniello and Elio Schaechter

On episode #21 of the podcast This Week in Microbiology, Vincent and Elio discuss an ancient symbiosis between Alphaproteobacteria and catenulid flatworms, and a toxin from Helicobacter pylori that engages the mitochondrial fission machinery to induce host cell death.

Download TWiM #21 (50 MB, .mp3, 68 minutes).

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Links for this episode:

Send your microbiology questions and comments to twim@microbe.tv

TWiM 20: Facebook for bacteria

proteus territories

Hosts: Vincent Racaniello, Michael Schmidt, and Elio Schaechter

On episode #20 of the podcast This Week in Microbiology, Vincent, Michael, and Elio follow up on the outbreaks of E. coli in Germany and cholera in Haiti, then discuss genes that confer self-identity to Proteus mirabilis.

Download TWiM #20 (49 MB, .mp3, 68 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Send your microbiology questions and comments twim@microbe.tv

About the Hosts of TWiM

Vincent Racaniello, Ph.D. (@profvrr) is Higgins Professor of Microbiology & Immunology at Columbia University Medical Center. He has been studying viruses for over 40 years. He teaches virology to undergraduate and graduate students, as well as medical, dental, and nursing students. His lectures are available online at iTunes University, YouTube, and Coursera.


Michael Schmidt, Ph.D. (TWiM) is the Professor and Vice Chairman of Microbiology and Immunology and Director of the Office of Special Programs at the Medical College of South Carolina. Dr. Schmidt is leading a team of infectious disease specialists from three health sciences centers and engineers from industry.

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