Effects of signaling pathway inhibitors on hematopoietic stem cells.
Mol Med Rep
; 23(1)2021 01.
Article
em En
| MEDLINE
| ID: mdl-33179097
ABSTRACT
While there are numerous small molecule inhibitory drugs available for a wide range of signalling pathways, at present, they are generally not used in combination in clinical settings. Previous reports have reported that the effects of glycogen synthase kinase (GSK)3ß, p38MAPK, mTOR and histone deacetylase signaling combined together to suppress the stemlike nature of hematopoietic stem cells (HSCs), driving these cells to differentiate, cease proliferating and thereby impairing normal hematopoietic functionality. The present study aimed to determine the effect of HDACs, mTOR, GSK3ß and p38MAPK inhibitor combinations on the efficient expansion of HSCs using flow cytometry. Moreover, it specifically aimed to determine how inhibitors of the GSK3ß signaling pathway, in combination with inhibitors of P38MAPK and mTOR signaling or histone deacetylase (HDAC) inhibitors, could affect HSC expansion, with the goal of identifying novel combination strategies useful for the expansion of HSCs. The results indicated that p38MAPK and/or GSK3ß inhibitors increased Lin cell and LinSca1+ckit+ (LSK) cell numbers in vitro. Taken together, these results suggested that a combination of p38MAPK and GSK3ß signaling may regulate HSC differentiation in vitro. These findings further indicated that the suppression of p38MAPK and/or GSK3ß signalling may modulate HSC differentiation and selfrenewal to enhance HSC expansion.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Piridinas
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Células-Tronco Hematopoéticas
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Transdução de Sinais
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Inibidores de Histona Desacetilases
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Imidazóis
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Indóis
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Maleimidas
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article