Researchers have known for more than half a century that sperm is able to fertilize an egg only after it has resided for a period of time in the female reproductive tract. Without this specific interaction with the female body, the sperm is incapable of producing offspring. But until now there was very little understanding of what changes occur within the sperm that suddenly allows it to fertilize an egg.
In the Journal of Proteome Research, Rensselaer Polytechnic Institute Assistant Professor of Chemistry and Chemical Biology Mark Platt reveals the molecular-level changes that occur within sperm after it enters the female reproductive tract. His findings provide important clues into the still-mysterious process of capacitation, the process by which sperm acquire the ability to fertilize an egg, including why some otherwise healthy males might encounter fertility issues. His research may also offer insight required to develop an entirely new contraceptive, even a male version of the birth control pill.
“Much has been done to understand capacitation, but with the tools that we have within the lab we can now identify how specific sites on individual proteins are modified during this process,” said Platt. “With this knowledge we can develop a deeper understanding of the molecular mechanisms required to provide sperm with fertilizing competence.”
“Based upon some of our additional work, a few of these sites appear to be essential to carrying out the process of capacitation,” Platt said
Tags : Conception, fertility, infertility, male

