Advance could lead to new infertility treatments, source of adult stem cells
Spermatogonial stem cells expressing green fluorescent protein.
A team of researchers working with cells from mice has overcome a technical barrier and succeeded in growing sperm progenitor cells in laboratory culture. The researchers transplanted the cells into infertile mice, which were then able to produce sperm and father offspring that were genetically related to the donor mice. "This advance opens up an exciting range of possibilities for future research, from developing new treatments for male infertility to enhancing the survival of endangered species," said Duane Alexander, M.D., Director of the NICHD. Their research, funded in part by the National Institute of Child Health and Human Development of the National Institutes of Health, will be published online this week in an upcoming issue of Proceedings of the National Academy of Sciences.
Led by Hiroshi Kubota, D.V.M., Ph.D., the team of researchers from the University of Pennsylvania School of Veterinary Medicine in Philadelphia, also included Mary Avarbock and Ralph L. Brinster V.M.D., Ph.D. The researchers succeeded in developing the culture medium containing the precise combination of cellular growth factors needed for the cells to reproduce themselves outside the body. Known as spermatogonial stem cells, the cells are incapable of fertilizing egg cells but give rise to cells that develop into sperm.
Robert Bock | EurekAlert!
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