Researchers at Massachusetts Institute of Technology (MIT) and Brigham Women’s Hospital, United States (U.S.) have developed a capsule that can deliver a week’s worth of Human Immuno-deficiency Virus (HIV) drugs in a single dose.
This advance could make it much easier for patients to adhere to the strict schedule of dosing required for the drug cocktails used to fight the virus, the researchers say.
The new capsule is designed so that patients can take it just once a week, and the drug will release gradually throughout the week.
This type of delivery system could not only improve patients’ adherence to their treatment schedule but also be used by people at risk of HIV exposure to help prevent them from becoming infected, the researchers say.
“One of the main barriers to treating and preventing HIV is adherence,” says Giovanni Traverso, a research affiliate at MIT’s Koch Institute for Integrative Cancer Research and a gastroenterologist and biomedical engineer at Brigham and Women’s Hospital.[tooltip id=”4500c2f113202943ff1ae30d00c9d4ac”] [/tooltip]“The ability to make doses less frequent stands to improve adherence and make a significant impact at the patient level.”
Traverso and Robert Langer, the David H. Koch Institute Professor at MIT, are the senior authors of the study, which appears in the January 9 issue of Nature Communications. MIT postdoc Ameya Kirtane and visiting scholar Omar Abouzid are the lead authors of the paper.
Scientists from Lyndra, a company that was launched to develop this technology, also contributed to the study. Lyndra is now working toward performing a clinical trial using this delivery system.
“We are all very excited about how this new drug-delivery system can potentially help patients with HIV/Acquired Immune Deficiency Syndrome (AIDS), as well as many other diseases,” Langer says.
Although the overall mortality rate of HIV has dropped significantly since the introduction of antiretroviral therapies in the 1990s, there were 2.1 million new HIV infections and 1.2 million HIV-related deaths in 2015.
Several large clinical trials have evaluated whether antiretroviral drugs can prevent HIV infection in healthy populations. These trials have had mixed success, and one major obstacle to preventative treatment is the difficulty in getting people to take the necessary pills every day.
The MIT/BWH team believed that a drug delivery capsule they developed in 2016 might help to address this problem. Their capsule consists of a star-shaped structure with six arms that can be loaded with drugs, folded inward, and encased in a smooth coating.
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