Abstract
Spermatogonial stem cells (SSCs) are the only type of cells that transmit genes to the subsequent generations. The proliferation, cultivation and identification of SSCs in vitro are critical to understanding of male infertility, genetic resources and conservation of endangered species. To investigate the effects of glial cell-derived neurotrophic factor (GDNF) and leukemia inhibitory factor (LIF) on the proliferation of mouse SSCs in vitro, supplement of GDNF and/or LIF were designed to culture SSCs. The testes of 6–8 d mouse were harvested and digested by two-step enzyme digestion method. The SSCs and Sertoli cells were separated by differential plating. Then the SSCs were identified by alkaline phosphatase staining, RT-PCR and indirect immunofluorescence cell analysis. The cellular proliferation capacity was measured by methyl thiazolyl tetrazolium assay. The results showed that addition of 20 and 40 ng/ml of GDNF could strongly promote growth of mouse SSCs (p < 0.05). There was no significant difference between LIF treatment groups and the control group in promoting proliferation of the mouse SSCs (p > 0.05). However, the combination of 20 ng/ml GDNF and 1,000 U/ml LIF could significantly enhance the invitro proliferation of mouse SSCs (p < 0.05), and the OD490 value was 0.696 at day 5 of culture when the density of SSCs was 5–10 × 104 cells/ml.
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Acknowledgments
This research was supported by the Youth Extra Fund of Northwest A&F University (Z111020905), the Basic Scientific Research Expense of Sci-Tech Innovation Major Project of Northwest A&F University (QN2011061) and the Special Research Subsidy Project of Northwest A&F University (07ZR002).
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Wang, P., Suo, LJ., Wang, YF. et al. Effects of GDNF and LIF on mouse spermatogonial stem cells proliferation in vitro. Cytotechnology 66, 309–316 (2014). https://doi.org/10.1007/s10616-013-9574-2
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DOI: https://doi.org/10.1007/s10616-013-9574-2