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Home NEWS Science News

UNC to create and test injectable long-acting implant to prevent HIV/AIDS

Bioengineer by Bioengineer
March 24, 2017
in Science News
Reading Time: 3 mins read
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Credit: David Etchison, UNC School of Pharmacy

Chapel Hill, NC – Researchers at the University of North Carolina at Chapel Hill have received a three-year, $1.8 million grant from the National Institutes of Health to develop a new implantable drug delivery system for long-lasting HIV-prevention.

Scientists in the UNC School of Medicine's Division of Infectious Diseases and the UNC Eshelman School of Pharmacy are developing an injectable drug delivery system that forms an implant that steadily releases anti-HIV medication over long periods of time.

The injectable formulation includes an anti-HIV drug, a polymer and a solvent. The three-compound liquid will solidify once injected under the skin. As the polymer slowly degrades, the drug is released. Efficacy of the new formulation to prevent HIV transmission will be evaluated using state of the art pre-clinical models developed at UNC.

Currently, a once-daily pill exists to prevent HIV infection. However, adherence to this daily regimen can be challenging for some people.

"This long-acting injectable formulation could provide a discrete and efficient method to protect against HIV infection and improve adherence, which is one of the major challenges of oral pre-exposure prophylaxis, or PrEP," said Rahima Benhabbour, Ph.D., assistant professor in the UNC Eshelman School of Pharmacy and one of the study's co-principal investigators. "The formulation is adaptable to a number of drugs alone or in combination and can be fine tuned to meet a targeted release regimen."

Long-acting injectable drug formulations for PrEP are currently being tested in clinical trials to improve adherence to the medication regimen. A limitation to the long-acting injectable formulation currently under study is that it cannot be removed from the body.

"The goal of our study is to develop an injectable polymer-based delivery system for long-acting PrEP that offers durable, sustained protection from HIV transmission, high efficacy of HIV inhibition, increased adherence and the ability to be removed in case of an unanticipated adverse event or when considering discontinuation of this form of PrEP," said Martina Kovarova, Ph.D., the study's co-principal investigator and an assistant professor in the UNC School of Medicine's Division of Infectious Diseases. "If discontinuation of treatment is desired, the implant would be readily removable."

The Centers for Disease Control and Prevention will assist UNC with further testing the injectable implant in animal models.

"We are excited to be part of the team that is undertaking this important study for HIV prevention," said Gerardo Garci-Lerma, Ph.D., a research microbiologist at CDC.

The team hopes the development and testing of this injectable implant will eventually yield a formulation that can provide a three months of HIV prevention.

"We're in the very beginning stages of this project," Kovarova said. "This novel formulation has oustanding properties, and we are excited to move ahead."

###

About the UNC Institute for Global Health & Infectious Diseases

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.

About the UNC Eshelman School of Pharmacy

The UNC Eshelman School of Pharmacy is an internationally recognized leader in pharmacy practice, education and research. The School develop leaders in pharmacy education, pharmacy practice and pharmaceutical sciences who make a difference on human health worldwide. The School offers opportunities in pharmacy and the pharmaceutical sciences that are simply not available anywhere else. Learn more at https://pharmacy.unc.edu/.

Media Contact

Morag MacLachlan
[email protected]
919-843-5719
@UNC_Health_Care

UNC School of Medicine

############

Story Source: Materials provided by Scienmag

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