In Vitro Derivation and Propagation of Spermatogonial Stem Cell Activity from Mouse Pluripotent Stem Cells.

O-3: Identification and Characterization of Repopulating Spermatogonial Stem Cells from The Adult Human Testis

Background: This study was conducted to identify and characterize repopulating spermatogonial stem cells (SSCs) in the adult human testes. Materials and Methods: Testes biopsies from obstructive azoospermic patients and normal segments of human testicular tissue were used. Flow cytometry, real time PCR and immunohistochemical analysis were performed. Purified human spermatogonia were transplant...

Comparison of Neonatal and Adult Mice-derived Sertoli Cells in Support of Expansion of Mouse Spermatogonial Stem Cells In vitro

P-50: Elongating and Elongated Spermatids Manufactured In Vitro from Non-Human Primate Pluripotent Stem Cells

Background: We have recently shown that human embryonic (hESCs) and induced pluripotent stem cells (hiPSCs) can differentiate into advanced spermatogenic cells including round spermatids by in vitro culture (Easley et al., Direct differentiation of human pluripotent stem cells into haploid spermatogenic cells. Cell Reports 2, 440-446 2012) and also, in collaboration, that rhesus spermatogonial ...

Evaluation and Comparison of the Expression Levels of the ZBTB16 (Plzf) and ZFP Genes and Alkaline Phosphatase in Three Cell Populations: Mouse Spermatogonial Stem Cells, Embryonic Stem-Like Cells (Es-Like), And Embryonic Stem Cells

Introduction: One of the vital enzymes during spermatogenesis, which is one of the pluripotency factors of stem cells and contributes to maintaining their pluripotency is alkaline phosphatase. ZBTB16 and ZFP proteins are critical elements in stem cells which are expressed in pluripotent stem cells and maintain their pluripotency due to their role in messaging pathways. Material & Methods: The ...

I-54: New Models for Human and Mouse Genetic

The possibility to reprogram somatic human cells will greatly and deeply change genetic approach and allow the development of new tools to study genetics diseases. Indeed, our ability to study human genetic diseases suffers from the lack of valid in vitro models. The latter should (i) be originating from human primary cells, (ii) be able to self-renew for a long time and (iii) be able to differ...