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Medical News

Immune System Protein Makes HIV More Infectious in Humans, Study Says

May 9, 2006

Cyclophilin A Renders Human Immunodeficiency Virus Type 1 Sensitive to Old World Monkey but Not Human TRIM5 Antiviral Activity," Journal of Virology: Greg Towers of University College London and colleagues find that a human immune system protein called cyclophilin A alters the form of HIV particles and makes them more infectious, New Scientist reports (Hooper, New Scientist, 5/6). Researchers infected cells from "Old World" monkeys and from humans with HIV-1 to analyze the protein's effect on the virus. The monkey cells, which contain cyclophilin A and an immune system protein TRIM5-alpha, stopped the virus from replicating. However, cyclophilin A in the human cells made HIV more infectious. "[T]he virus is using cyclophilin A to help it replicate," Towers said (Hooper, New Scientist, 5/6).

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Reprinted with permission from kaisernetwork.org. You can view the entire Kaiser Daily HIV/AIDS Report, search the archives, or sign up for email delivery at www.kaisernetwork.org/dailyreports/hiv. The Kaiser Daily HIV/AIDS Report is published for kaisernetwork.org, a free service of the Kaiser Family Foundation, by The Advisory Board Company. © 2006 by The Advisory Board Company and Kaiser Family Foundation. All rights reserved.



  
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This article was provided by Henry J. Kaiser Family Foundation. It is a part of the publication Kaiser Daily HIV/AIDS Report. Visit the Kaiser Family Foundation's website to find out more about their activities, publications and services.
 
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