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HIV Infection can be Prevented by Identifying Key Targets

by Kathy Jones on October 2, 2012 at 6:23 PM
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 HIV Infection can be Prevented by Identifying Key Targets

A new study conducted by researchers from the National Hospital Organization Nagoya Medical Center and Nagoya University suggests that HIV attacks can be blocked by identifying the structure of an immune-cell protein targeted by the virus, raising hopes of the development of new treatment therapies that could prevent HIV infection.

Lymphocyte cells that have virus-fighting proteins on their surface are a central part of the human immune system.

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But an HIV protein called Vif (viral infectivity factor) is able to bind and destroy these proteins, which allows the AIDS-causing virus to enter the cells and multiply.

The molecular structure of an antivirus protein called APOBEC3C was analysed by the researchers, and they found that it contains a cavity that Vif can bind to, Japan Times reported.
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They confirmed the process through which this phenomenon occurs, and found that this protein falls apart once the two combine, their report said.

While existing medicines to combat HIV often cause side effects or become less potent if used over a long period, the team's finding has raised "the possibility for the development of a new AIDS treatment that taps into the human body's own defense mechanism," Yasumasa Iwatani, who heads the medical center's laboratory of infectious diseases, said.

The team said that they now plan to look for compounds that can fit into the protein cavity and block attacks by HIV to study the effectiveness of different candidate compounds.

The study is published in the US journal Nature Structural and Molecular Biology.

Source: ANI
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