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Researchers discuss challenges, successes of HIV cure research in science

University of North Carolina Health Care

July 21, 2016 - Chapel Hill, NC - A better understanding of HIV latency is the key to eradicating the virus researchers at the University of North Carolina and partner institutions write in a perspective in the journal Science . Worldwide, 37 million people are living with HIV. A cure has proved elusive due to viral latency - a period when the virus remains alive, but dormant in body thereby eluding the immune system.

Based at UNC, the National Institutes of Health-funded Collaboratory of AIDS Researchers for Eradication (CARE) seeks to validate and implement their "kick and kill" strategy to cure HIV infection. This approach involves waking up the latent or sleeping virus in the body, and at the same time boost the immune system to recognize and clear the virus. In the Science perspective, the researchers discuss the gains they have made in understanding latency over the past five years and the challenges that remain as the team of academic and industry investigators -- from UNC, Duke University, Merck, GlaxoSmithKline, the University of California at San Diego, Emory University, MacroGenics, and other institutions - embark on the next steps in HIV cure research.

"We have learned a lot, and made advances, and we hope that we now have the tools to begin to chip away at the persistent virus that remains in patients, and requires them to maintain lifelong antiviral drug therapy," said David Margolis, MD, Professor of Medicine at UNC and Principal Investigator of CARE.

The team has made tremendous strides in learning about latency reversing agents or LRAs. Four clinical studies have revealed that histone deacetylase (HDAC) inhibitors are the most effective LRA for inducing cell-associated HIV-1 RNA. The investigators have also studied cells from people living with HIV and found that serial dosing of LRAs is needed to reverse latency.

Questions the group hopes to answer over the next five years include if LRAs will promote the expression of viral protein on the surface of infected cells, and if pairing LRAs with immune interventions will lead to the clearance of persistent, latent infection.

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The National Institute of Allergy and Infectious Diseases, part of the NIH, first funded CARE in 2011 through its Martin Delaney Collaboratory program for HIV cure research. The program was the first major funding initiative to focus on eradication of HIV from the body and was named in honor of internationally recognized HIV activist Martin Delaney. In July 2016, CARE was refunded by the NIH for another five-year period.

In this next project period, CARE will seek to 1) define next-generation therapies that reveal the latent reservoir of HIV infection, 2) develop novel reagents capable of depleting persistent infection, and 3) translate these advances in human clinical trials.

For more information about CARE, visit delaneycare.org.

The mission of UNC's Institute for Global Health & Infectious Diseases is to harness the full resources of the University and its partners to solve global health problems, reduce the burden of disease, and cultivate the next generation of global health leaders. Learn more at http://www.globalhealth.unc. edu.

Source:http://www.eurekalert.org/pub_releases/2016-07/uonc-rdc072116.php


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