Efficient induction of pluripotency in primordial germ cells by dual inhibition of TGF-ß and ERK signaling pathways.
Stem Cells Dev
; 23(10): 1050-61, 2014 May 15.
Article
em En
| MEDLINE
| ID: mdl-24382167
ABSTRACT
Primordial germ cells (PGCs) have the ability to be reprogrammed into a pluripotent state and are defined as embryonic germ cells (EGCs) in vitro. EGC formation is more efficient, has a shorter culture period than somatic cell reprogramming, and does not require exogenous genetic manipulation. Therefore, EGCs are a good model to analyze mechanisms by which committed cells acquire a pluripotent state. In the present study we have attempted to elucidate a more defined and robust protocol that promotes EGC generation through the suppression of transforming growth factor-ß (TGF-ß) and extracellular signal-regulated kinase (ERK) signaling pathways by SB431542 (SB) and PD0325901 (PD), respectively. Under this condition the efficiency of transformation of PGCs into EGCs was more than the inhibition of glycogen synthase kinase 3 and ERK signaling pathways. Pluripotency of the resultant-derived EGC lines were further confirmed by gene expression, immunofluorescent staining, directed differentiation ability, teratoma formation, and their contribution to chimeric mice and germ-line transmission. These results showed that PGCs from different embryonic stages (E8.5 and E12.5) could be reprogrammed, maintained, and expanded efficiently under feeder- and serum-free chemically defined conditions by dual inhibition of TGF-ß and ERK signaling pathways, regardless of the animal's genetic background.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fator de Crescimento Transformador beta
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Sistema de Sinalização das MAP Quinases
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Células-Tronco Pluripotentes
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Células Germinativas
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Stem Cells Dev
Assunto da revista:
HEMATOLOGIA
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Irã