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Novel Compound Shows Promise in Silencing HIV Infection

by Ramya Rachamanti on August 7, 2019 at 7:49 PM
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Novel Compound Shows Promise in Silencing HIV Infection

New medication that puts down the silent HIV virus was discovered by the team of researchers from The University of Texas Medical Branch at Galveston. The findings are published in the Journal of Clinical Investigation.

Although the potential new drug could complement the current HIV anti-retroviral therapy (ART) medications, it may also be possible that it could lead to HIV remission without a lifetime of taking ART medications.

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The HIV virus gets integrated into the infected person's genetic coding and establishes a constant dormant infection, creating a big treatment challenge. Because of this, current ART medications fail to cure the virus and when someone stops the drug, the virus almost always begins to multiply and wreak havoc. Drug resistance is also a public health issue with the ART medications. Being able to induce a sustained HIV remission free of ART is an important goal for HIV treatment.

"We are the first to show that human BRD4 protein and its associated machinery can be harnessed to suppress dormant HIV," said senior author Haitao Hu, UTMB assistant professor in the department of microbiology and immunology. "Our findings are exciting because they not only improve our understanding of the biology of HIV epigenetic regulation, they also present a promising approach for the development of probes and/or therapeutic agents for HIV silencing, hopefully leading to cure of the virus eventually."
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In the laboratory study, the researchers found that the protein BRD4 plays an important role in regulating the production of new copies of the HIV gene. The team successfully designed, synthesized and evaluated a series of small molecules to selectively program BRD4 to suppress HIV and identified a lead compound called ZL0580. They tested the lead molecule in HIV infection models and found that it significantly delayed dormant HIV reactivation after ART cessation in blood cells of ART-treated, HIV infected people.

"We will continue to optimize the chemical structure and effectiveness of this class of molecules and conduct safety testing in cellular and animal studies," said co-senior author Jia Zhou, UTMB professor in the department of pharmacology and toxicology. "We look forward to the time when we can begin clinical trials so that this approach can begin to help HIV-infected individuals."

Source: Eurekalert
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