Aspirin inhibits the proliferation of human uterine leiomyoma cells by downregulation of K-Ras-p110 alpha interaction

作者：Gao, Min^*; Guo, Kai-Min; Wei, Yin-Mei; Ma, Ming-Ming; Cai, Jia-Rong; Xia, Ting-Ting; Ye, Qing-Jian^*

来源：Oncology Reports, 2017, 38(4): 2507-2517.

DOI：10.3892/or.2017.5915

• human uterine leiomyoma cell
• aspirin
• proliferation
• K-Ras-p110 alpha interaction

Aspirin has been confirmed as an effective antitumor drug in various cancers. However, the relationship between aspirin and uterine leiomyoma is still underexplored. Here, we explored the effects of aspirin on human uterine leiomyoma cells and provide insights into the underlying mechanisms. Cell Counting Kit-8 (CCK-8) and flow cytometry analysis showed that aspirin treatment inhibited cell proliferation and promoted cell cycle arrest at G0/G1 phase in a dose-and time-dependent manner of human uterine leiomyoma cells. Further studies revealed that aspirin blocked the interaction between K-Ras and p110 alpha by co-immunoprecipitation and immunofluorescence. Western blotting demonstrated K-Ras-p110 alpha interaction was required for the effects of aspirin-induced inhibition on cell growth and cell cycle transition via cell cycle regulators, including cyclin D1 and cyclin-dependent kinase 2 (CDK2). PI3K/Akt/caspase signaling pathway was involved in human uterine leiomyoma cell growth under aspirin treatment. Taken together, these results suggest that aspirin inhibited human uterine leiomyoma cell growth by regulating K-Ras-p110 alpha interaction. Aspirin which targeting on interaction between K-Ras and p110 alpha may serve as a new therapeutic drug for uterine leiomyoma treatment.

• 出版日期2017-10
• 单位中山大学; 广州医科大学; 广州市妇女儿童医疗中心