Activated HoxB4-induced hematopoietic stem cells from murine pluripotent stem cells via long-term programming.
Exp Hematol
; 89: 68-79.e7, 2020 09.
Article
em En
| MEDLINE
| ID: mdl-32795499
ABSTRACT
Hematopoietic stem cells (HSCs) are multipotent cells that form the entire blood system and have the potential to cure several pathogenic conditions directly or indirectly arising from defects within the HSC compartment. Pluripotent stem cells (PSCs) or induced pluripotent stem cells (iPSCs) can give rise to all embryonic cell types; however, efficient in vitro differentiation of HSCs from PSCs remains challenging. HoxB4 is a key regulator orchestrating the differentiation of PSCs into all cells types across the mesodermal lineage, including HSCs. Moreover, the ectopic expression of HoxB4 enhances the in vitro generation and expansion of HSCs. However, several aspects of HoxB4 biology including its regulatory functions are not fully understood. Here, we describe the role of HoxB4 in indirectly inhibiting the emergence of mature CD45+ HSCs from iPSCs in vitro. Forced activation of HoxB4 permitted long-term maintenance of functional hematopoietic stem and progenitor cells (HSPCs), which efficiently reconstituted hematopoiesis upon transplantation. Our method enables an easy and scalable in vitro platform for the generation of HSCs from iPSCs, which will ultimately lead to a better understanding of HSC biology and facilitate preparation of the roadma for producing an unrestricted supply of HSCs for several curative therapies.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fatores de Transcrição
/
Células-Tronco Hematopoéticas
/
Proteínas de Homeodomínio
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Transplante de Células-Tronco Hematopoéticas
/
Proteínas Mutantes Quiméricas
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Reprogramação Celular
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Células-Tronco Pluripotentes Induzidas
Limite:
Animals
/
Humans
Idioma:
En
Revista:
Exp Hematol
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Japão