Notch-1 inhibition reduces proliferation and promotes osteogenic differentiation of bone marrow mesenchymal stem cells.

Abstract:

:Low differentiation and high proliferation rates are critical factors affecting bone marrow mesenchymal stem cell (BMSC) tumorigenesis. The present study aimed to investigate the role of the Notch signaling pathway in BMSC proliferation and osteogenic differentiation. Mouse BMSCs were divided into control, vector, Notch1-small interfering (si)RNA, γ-secretase inhibitor, and Notch1-siRNA + γ-secretase inhibitor groups. The siRNA-Notch1, γ-secretase inhibitor, and Notch1-siRNA + γ-secretase inhibitor groups were treated with Notch1 siRNA and/or γ-secretase inhibitor. Following treatment, cell proliferation was evaluated using a Cell Counting Kit-8. Tumor-related factors, including transforming growth factor (TGF)-β1, c-Myc and p53, were detected by reverse transcription-quantitative polymerase chain reaction and western blot analyses. BMSC osteogenic differentiation was induced and the cells were stained with alizarin red at 14 and 21 days. Alkaline phosphatase (AKP) activity was also evaluated. The siRNA-Notch1 and γ-secretase inhibitor both reduced BMSC proliferation and the expression of TGF-β1 and c-Myc and increased the expression of p53. Following the induction of osteogenesis and staining with alizarin red, the level of AKP was significantly higher in cells in the siRNA-Notch1 and γ-secretase inhibitor groups compared with that in the control group. It was found that Notch1 inhibition reduced proliferation and promoted the osteogenic differentiation of BMSCs.

journal_name

Exp Ther Med

authors

He Y,Zou L

doi

10.3892/etm.2019.7765

subject

Has Abstract

pub_date

2019-09-01 00:00:00

pages

1884-1890

issue

3

eissn

1792-0981

issn

1792-1015

pii

ETM-0-0-7765

journal_volume

18

pub_type

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