Low-intensity pulsed ultrasound activates ERK1/2 and PI3K-Akt signalling pathways and promotes the proliferation of human amnion-derived mesenchymal stem cells

作者：Ling, Li; Wei, Tianqin; He, Lianli; Wang, Yaping; Wang, Yan; Feng, Xiushan; Zhang, Wenqian; Xiong, Zhengai^*

来源：Cell Proliferation, 2017, 50(6): e12383.

DOI：10.1111/cpr.12383

• BONE-MARROW
• IN-VITRO
• MULTILINEAGE DIFFERENTIATION
• ELECTROMAGNETIC-FIELDS
• ADIPOSE-TISSUE
• GROWTH-FACTORS
• TERM PLACENTA
• LIPUS
• MEMBRANE
• BLOOD

Objectives: This study was to investigate the effect and mechanism of low-intensity pulsed ultrasound (LIPUS) on the proliferation of human amnion-derived mesenchymal stem cells (hAD-MSCs). @@@ Methods: Human amnion-derived mesenchymal stem cells were isolated from the amnion of term placentas and identified by flow cytometry and differentiation culture. Proliferation of hAD-MSCs was investigated by Cell Counting Kit-8, cell cycle and EdU assays. Western blotting was used to determine the protein expression levels. @@@ Results: Human amnion-derived mesenchymal stem cells were successfully isolated from the amnion and identified as multipotent mesenchymal stem cells. Low-intensity pulsed ultrasound promoted the proliferation of hAD-MSCs. Cell cycle analysis showed that LIPUS promoted cells to enter S and G2/M phases from G0/G1 phase. Western blot results showed that LIPUS promoted the phosphorylation and activation of ERK1/2 and Akt and significantly upregulated expression of cyclin D1, cyclin E1, cyclin A2 and cyclin B1. ERK1/2 inhibitor (U0126) and PI3K inhibitor (LY294002) significantly reduced LIPUS-induced phosphorylation of ERK1/2 and Akt, respectively, which in turn reduced the LIPUS-induced proliferation of hAD-MSCs. @@@ Conclusions: Low-intensity pulsed ultrasound can promote the proliferation of hAD-MSCs, and ERK1/2 and PI3K-Akt signalling pathways may play important roles in this process.

• 出版日期2017-12
• 单位遵义医科大学; 重庆医科大学