- Spermatozoïdes Testiculaires
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Le transfert intratesticulaire de cellules germinales immatures
Intratesticular transplantation of immature germ cells
Andrologie volume 12, pages 347–350 (2002)
Resume
La transplantation de cellules germinales mâles immatures (spermatogonies-souches) dans le testicule adulte permet d’obtenir une spermatogenèse complète lorsque les sujets donneurs et receveurs sont d’espèce identique ou très proche. Lorsque la distance phylogénétique est trop grande, les cellules germinales survivent, en liaison avec les cellules de Sertoli, mais ne s’engagent pas dans la méiose. Cette méthode, développée chez les rongeurs, permet également d’obtenir des gamètes transgéniques. Son application chez l’homme devrait permettre de rendre la fertilité à des patients traités pendant l’enfance par des traitements anticancéreux et pour lesquels des cellules prélevées par biopsie testiculaire ont été cryoconservées.
Abstract
Immature male germ cells (spermatogonial stem cells) are able to develop and differentiate in the adult testis of the same or closely related species. Spermatozoa of several species of rodents can be obtained from stem cells transplanted into the testes of mice. When the two species are not too phylogenetically different, germ cells can proliferate, but they do not enter into meiosis.
Germ cell transfer, first performed in rodents by Bringer, is a very useful method to study cell relations during spermatogenesis and provides a good method for production of transgenic gametes.
In human therapy, it should be possible to restore the fertility of young adult men treated for cancer during childhood, as chemotherapy and radiotherapy induce the death of germ cells. If cryoperservation of testicular tissue is performed before starting gonadotoxic therapy, stem cells can subsequently repopulate the seminiferous tubules.
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Vendrely, E. Le transfert intratesticulaire de cellules germinales immatures. Androl. 12, 347–350 (2002). https://doi.org/10.1007/BF03034652
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DOI: https://doi.org/10.1007/BF03034652