Abstract
Spermatogonia are specialized cells responsible for continuous spermatogenesis and the production of offspring. Because of this biological property, in vitro culture of spermatogonia provides a powerful methodology to advance reproductive biology and engineering. However, methods for culturing primate spermatogonia are poorly established. We have designed a novel method for culturing spermatogonia in the common marmoset (Callithrix jacchus), a small primate. By using our method with a suite of growth factors, adult marmoset testis-derived germ cells could be cultured in the form of a floating sphere for several weeks. Notably, this method could be applied not only to freshly isolated cells but also to cryopreserved cell stocks. The spheres enriched spermatogonia and early spermatocytes, and could be assembled from a C-KIT+ spermatogonial population. Techniques for culturing spermatogonia could facilitate increased understanding of primate reproduction as well as the preservation of valuable biomaterials from nonhuman primates.
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Acknowledgments
This work was supported by grants from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (MEXT); the Ministry of Health, Labour, and Welfare; the Japan Society for the Promotion of Science (JSPS); the National Institute of Biomedical Innovation and the Strategic Research Program for Brain Sciences from MEXT; the Funding Program for World-Leading Innovative R&D in Science and Technology (FIRST); a Keio University Grant-in-Aid for the Encouragement of Young Medical Scientists; Leave a Nest Grant Life Technologies Japan Award; Interuniversity Bio-Backup Project for Basic Biology; the Brain Sciences Project of the Center for Novel Science Initiatives (CNTI), National Institutes of Natural Sciences (NINS); and Otsuka Toshimi Foundation.
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H.O. is a Scientific Advisory Board Member of San Bio Co. Ltd. The other authors have no competing interests.
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Lin, Z.YC., Hikabe, O., Suzuki, S. et al. Sphere-formation culture of testicular germ cells in the common marmoset, a small New World monkey. Primates 57, 129–135 (2016). https://doi.org/10.1007/s10329-015-0500-4
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DOI: https://doi.org/10.1007/s10329-015-0500-4