innate immunity

Mitochondrial double-stranded RNA is dangerous

Mitochondria are descended from bacteria that invaded cells 1.5 billion years ago and never left. The mitochondrial genome is like that of bacteria: circular double-stranded DNA, only smaller. And just like the genome of bacteria, RNA can be made from both strands of mitochondrial DNA – which results in the formation of dsRNA. Fortunately there …

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TWiV 458: Saliva of the fittest

The TWiVians present an imported case of yellow fever in New York City, and explain how a dengue virus subgenomic RNA disrupts immunity in mosquito salivary glands to increase virus replication. Click arrow to play Download TWiV 458 (72 MB .mp3, 119 min) Subscribe (free): iTunes, RSS, email Become a patron of TWiV! Show notes at microbe.tv/twiv.

TWiV 456: Be careful of canons

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.

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