Abstract
Purpose
To investigate the spontaneous germ cell differentiation capacity of VUB hESC lines, develop a protocol for the induction of germ cell differentiation using conditioned medium from Sertoli cells (SCCM) and compare it to existing protocols.
Methods
hESC were allowed to differentiate spontaneously or after the addition of bone morphogenetic proteins (BMPs) and/or SCCM. VASA transcripts were measured by relative quantification real-time RT-PCR to determine the efficiency of germ cell differentiation.
Results
VUB hESC lines can differentiate spontaneously towards the germ cell lineage, however, more consistently in an embryoid body approach than in monolayer cultures. BMPs and SCCM significantly improve VASA expression, but do not have a synergistic effect. Direct contact of differentiating hESC with Sertoli cells does not improve VASA expression.
Conclusions
SCCM contains inductive factors for germ cell differentiation and could represent an element for in-vitro differentiation to germ cells.
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Acknowledgements
Our research is supported by grants from the Research Foundation—Flanders (FWO-Vlaanderen) and the research council of the Brussels Free University (OZR).
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Sertoli cell-conditioned medium contains (an) inductive factor(s) for germ cell differentiation from human embryonic stem cells, possibly representing an element for in-vitro germ cell differentiation.
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Geens, M., Sermon, K.D., Van de Velde, H. et al. Sertoli cell-conditioned medium induces germ cell differentiation in human embryonic stem cells. J Assist Reprod Genet 28, 471–480 (2011). https://doi.org/10.1007/s10815-011-9541-9
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DOI: https://doi.org/10.1007/s10815-011-9541-9