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Abstract Title:

Bufalin Inhibits hTERT Expression and Colorectal Cancer Cell Growth by Targeting CPSF4.

Abstract Source:

Cell Physiol Biochem. 2016 ;40(6):1559-1569. Epub 2016 Dec 21. PMID: 27997899

Abstract Author(s):

Ningning Zhang, Yunpeng Xie, Yidi Tai, Yingying Gao, Wei Guo, Wendan Yu, Jia Li, Xu Feng, Jiaojiao Hao, Yue Gao, Xinrui Zhao, Yina Liao, Wei Jiang, Ge Liu, Wuguo Deng, Xiaonan Cui

Article Affiliation:

Ningning Zhang

Abstract:

BACKGROUND/AIMS: Bufalin can induce apoptosis in certain human cancer cell lines, but bufalin has not yet been thoroughly evaluated in colorectal cancer cells. Cleavage and polyadenylation specific factor 4 (CPSF4) and human telomerase reverse transcriptase (hTERT) play important roles in colorectal cancer growth. The aim of this study was to investigate the roles and interactions of bufalin, CPSF4 and hTERT and the effects of bufalin in human colorectal cancer.

METHODS: We treated LoVo and SW620 cells with bufalin to investigate the effect of bufalin on proliferation, apoptosis and migration. We verified the relationship between CPSF4 and hTERT using pulldown assays, luciferase reporter assays and chromatin immunoprecipitation (ChIP) assays.

RESULTS: Bufalin inhibited the proliferation and migration of and induced apoptosis in LoVo and SW620 cells. We identified CPSF4 as an hTERT promoter-binding protein in colorectal cancer cells.

CONCLUSION: Our study identified bufalin as a potential small molecule inhibitor for cancer therapy.

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