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HIV -- Geneticists map human resistance to AIDS
Date:10/28/2013

first map of human HIV resistance, the researchers had to analyze an enormous amount of data. They studied various strains of HIV from 1,071 seropositive individuals. They crossed more than 3,000 potential mutations in the viral genome with more than 6 million variations in the patients' genomes. Using supercomputers, they studied all these possible combinations and identified correspondence between patients.

"We had to study the virus before the patient had undergone treatment, which is far from easy," says Fellay. This meant they had to search in data banks established in the 1980s, before effective therapies were made available.

This novel, indirect method made it possible to obtain the most complete global overview to date of human genes and their implications in terms of HIV resistance. It allows us to not only better understand how we defend ourselves from attack but also how the virus adapts itself to our defense mechanisms. "We now have a true database that tells us which human genetic variation will induce which kind of mutation in the virus", explains Amalio Telenti, co-author and UNIL-CHUV researcher.

Therapies inspired by our own natural defense

This research has two major implications. New therapies could be developed based on studying humans' natural defenses, particularly those that result in a reduced replication of the virus. In addition, the scientists hope that by profiling the genome of HIV-infected individuals, it will be possible to develop individually targeted treatments that take into account the patients' genetic strengths and weaknesses.


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Contact: Jacques Fellay
jacques.fellay@epfl.ch
41-799-481-129
Ecole Polytechnique Fdrale de Lausanne
Source:Eurekalert

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