Plasmids have been discovered that can move from cell to cell within membrane vesicles in a species of Archaea (link to paper). They provide clues about the origin of virus particles. Electron microscope analysis of the culture medium from Halobrum lacusprofundi R1S1, an Archaeal strain from Antarctica, revealed spherical particles which were subsequently shown to …
Brianne joins the TWiVMasters to explain how mutations in genes encoding RNA polymerase III predispose children to severe varicella, and detection of an RNA virus by a DNA sensor. Click arrow to play Download TWiV 456 (75 MB .mp3, 124 min) Subscribe (free): iTunes, RSS, email Become a patron of TWiV! Show notes at microbe.tv/twiv.
Not long after their discovery, viruses that infect bacteria – bacteriophages – were considered as therapeutic agents for treating infections. Despite many years of research on so-called phage therapy, clinical trials have produced conflicting results. They might be explained in part by the results of a new study which show that the host innate immune system …
Erin Garcia joins the TWiVirions to discuss a computer exploit encoded in DNA, creation of pigs free of endogenous retroviruses, and mutations in the gene encoding an innate sensor of RNA in children with severe viral respiratory disease. Click arrow to play Download TWiV 455 (64 MB .mp3, 105 min) Subscribe (free): iTunes, RSS, email Become a patron of TWiV! Show notes …
There aren’t enough human organs to meet the needs for transplantation, so we have turned to pigs. Unfortunately pig cells contain porcine endogenous retroviruses, PERVS, which could infect the transplant recipient, leading to tumor formation. But why worry? Just use CRISPR to purge the PERVs. The genomes of many species on Earth are littered with endogenous …
Sharon Isern and Scott Michael return to TWiV for a Zika virus update, including their work on viral evolution and spread, and whether pre-existing immunity to dengue virus enhances pathogenesis. Click arrow to play Download TWiV 454 (65 MB .mp3, 108 min) Subscribe (free): iTunes, RSS, email Become a patron of TWiV! Show notes at microbe.tv/twiv
