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Nanotechnology-Based Contraception

David Clapham of Boston Children's Hospital in the U.S. will develop and test a nanoparticle contraceptive that releases sperm tail inhibitors in response to vaginal pH changes or exposure to prostatic fluid. The nanoparticles could be incorporated into a vaginal gel to block sperm motility required for fertilization. This project's Phase I research culminated in the development of mesoporous silica nanoparticles that contain sperm inhibitors. In Phase II, Clapham will refine the efficacy and stability of the nanoparticles, conduct animal model tests, and collect data necessary to file for a new drug application.

More information about Create New Technologies for Contraception (Round 5)

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The Bill & Melinda Gates Foundation is part of the Grand Challenges partnership network. Visit www.grandchallenges.org to view the map of awarded grants across this network and grant opportunities from partners.