Journal
ANDROLOGIA
Volume 46, Issue 1, Pages 24-35Publisher
WILEY
DOI: 10.1111/and.12037
Keywords
Efficacy; retinoic acid; transdifferentiation; MSCs; male germ cells
Categories
Funding
- Royan Institute [160]
- Urmia University (Faculty of Veterinary Medicine)
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Recent studies have shown the unique role of retinoic acid (RA) in the induction of transdifferentiation in mesenchymal stem cells (MSCs) into germ cells (GCs). This study is the first study that compares the efficacy of three different concentrations of RA for the production of male GCs in vitro. Male sheep marrow-derived MSCs (MMSCs) were treated with the following concentrations of RA: 1m (RA1), 5m (RA2) and 10m (RA3) for a period of 21days. The production of male GCs was evaluated by the assessment of expressions of GC-specific markers (by RT-PCR, qRT-PCR and immunocytochemistry), morphological characteristics and changes in alkaline phosphatase (ALP) activity. All three concentrations created male GC features. RA treatment upregulated the expressions of VASA and beta1 INTEGRIN and downregulated PIWIL2 and OCT4. DAZL was not expressed by RA treatment. Interestingly, immunocytochemistry detected PGP 9.5 expression in all treatment groups, with the highest expression noted in the RA3 group (P<0.05). GC-like cells along with increased ALP activity were observed in all treated cultures, too. Finally, results showed that 10m RA has the most efficiency for transdifferentiation induction in MMSCs and production of male GCs in vitro.
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