Ginsenoside Rg_1 induces leukemia stem cell senescence via SIRT1/TSC_2 signal axis / 中国中药杂志
China Journal of Chinese Materia Medica
; (24): 2348-2352, 2019.
Article
em Zh
| WPRIM
| ID: wpr-773088
Biblioteca responsável:
WPRO
ABSTRACT
The aim of this paper was to investigate the effect of SIRT1/TSC_2 signal axis on leukemia stem cell senescence induced by ginsenoside Rg_1. CD34~+CD38~- leukemia stem cells(CD34~+CD38~-LSCs) was isolated by magnetic cell sorting(MACS) and divided into two groups. The control group cells were routinely cultured, 40 μmol·L~(-1) ginsenoside Rg_1 was added to the control group for co-culture in Rg_1 group. The effect of Rg_l to induce CD34~+CD38~-LSCs senescence were evaluated by senescence-associated β-Galactosidase(SA-β-Gal) staining, cell cycle assay, CCK-8 and Colony-Assay. The expression of senescence associated SIRT1, TSC_2 mRNA and protein was examined by Real-time fluorescence quantitative PCR(FQ-PCR) and Western blot. The results showed that the CD34~+CD38~-LSCs could effectively be isolated by MACS, and the purity of CD34~+CD38~-LSCs is up to(95.86±3.04)%. Compared with the control group, the percentage of positive cells expressed SA-β-Gal in the Rg_1 group is increased, the senescence morphological changes were observed in the CD34~+CD38~-LSCs in the Rg_1 group. The proliferation inhibition rate and the number of cells entered G_0/G_1 phase in the Rg_1 group were increased, but the colony-formed ability was decreased, Rg_1 could significantly inhibit the proliferation and self-renewal ability of CD34~+CD38~-LSCs. The expression of SIRT1 and TSC_2 mRNA and protein were down regulated in the Rg_1 group compared with the control group. Our research implied that Rg_1 may induce the senescence of CD34~+CD38~-LSCs and SIRT1/TSC_2 signal axis plays a significant role in this process.
Palavras-chave
Texto completo:
1
Base de dados:
WPRIM
Assunto principal:
Farmacologia
/
Células-Tronco Neoplásicas
/
Células Tumorais Cultivadas
/
Leucemia Mieloide Aguda
/
Transdução de Sinais
/
Senescência Celular
/
Ginsenosídeos
/
Sirtuína 1
/
Proteína 2 do Complexo Esclerose Tuberosa
/
Metabolismo
Limite:
Humans
Idioma:
Zh
Revista:
China Journal of Chinese Materia Medica
Ano de publicação:
2019
Tipo de documento:
Article