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Virology News
Topical news snippets about viruses that affect people.  And other things. Like zombies B-)
Curated by Ed Rybicki
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Phages hijack a host's defence

Phages hijack a host's defence | Virology News | Scoop.it

"Bacteria have developed a formidable arsenal of sophisticated strategies to neutralize viruses, but phages always seem to find a way to evolve, persist and abound. Studies of the complex evolutionary dynamics between phages and bacteria led to the discovery of a widespread bacterial defence system called CRISPR/Cas. On page 489 of this issue, Seed et al. report the remarkable finding that some phages that infect the bacterial pathogen Vibrio cholerae have also acquired a functional CRISPR/Cas system in their own genome which allows them to neutralize an unrelated antivirus system in their bacterial host"

 

Bacteriophage graphic courtesy of Russell Kightley Media

Ed Rybicki's insight:

So many people have pointed this out to me today that I just HAD to do something on it.

 

This is a seriously big deal, in our understanding of the arms race between viruses and their hosts: here we have a virus that is circumventing a widespread antiviral defence system in bacteria, by using elements of the system against the bacteria - and it can adapt to match its hijacked system to that of the host.

 

Not only stranger than we imagine; sometimes stranger than we CAN imagine - or just way more sophisticated than we thought.

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Rescooped by Ed Rybicki from Virology and Bioinformatics from Virology.ca
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In Vitro Characterization of a Nineteenth-Century Therapy for Smallpox

In Vitro Characterization of a Nineteenth-Century Therapy for Smallpox | Virology News | Scoop.it
In the nineteenth century, smallpox ravaged through the United States and Canada. At this time, a botanical preparation, derived from the carnivorous plant Sarracenia purpurea, was proclaimed as being a successful therapy for smallpox infections.

 

Botanicals: the (partially) unexplored country.  Sometimes folk wisdom has pharmaceutical potential.


Via Chris Upton + helpers
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