TGF-ß modulates cell fate in human ES cell-derived foregut endoderm by inhibiting Wnt and BMP signaling.
Stem Cell Reports
; 19(7): 973-992, 2024 Jul 09.
Article
em En
| MEDLINE
| ID: mdl-38942030
ABSTRACT
Genetic differences between pluripotent stem cell lines cause variable activity of extracellular signaling pathways, limiting reproducibility of directed differentiation protocols. Here we used human embryonic stem cells (hESCs) to interrogate how exogenous factors modulate endogenous signaling events during specification of foregut endoderm lineages. We find that transforming growth factor ß1 (TGF-ß1) activates a putative human OTX2/LHX1 gene regulatory network which promotes anterior fate by antagonizing endogenous Wnt signaling. In contrast to Porcupine inhibition, TGF-ß1 effects cannot be reversed by exogenous Wnt ligands, suggesting that induction of SHISA proteins and intracellular accumulation of Fzd receptors render TGF-ß1-treated cells refractory to Wnt signaling. Subsequently, TGF-ß1-mediated inhibition of BMP and Wnt signaling suppresses liver fate and promotes pancreas fate. Furthermore, combined TGF-ß1 treatment and Wnt inhibition during pancreatic specification reproducibly and robustly enhance INSULIN+ cell yield across hESC lines. This modification of widely used differentiation protocols will enhance pancreatic ß cell yield for cell-based therapeutic applications.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Diferenciação Celular
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Proteínas Morfogenéticas Ósseas
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Endoderma
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Via de Sinalização Wnt
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Células-Tronco Embrionárias Humanas
Limite:
Humans
Idioma:
En
Revista:
Stem Cell Reports
Ano de publicação:
2024
Tipo de documento:
Article
País de publicação:
Estados Unidos