The preclinical analysis of TW-37 as a potential anti-colorectal cancer cell agent.

The preclinical analysis of TW-37 as a potential anti-colorectal cancer cell agent.
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TW-37作为潜在抗结直肠癌细胞药物的临床前分析

DOI:
10.1371/journal.pone.0184501
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发表时间:
2017
期刊:
影响因子:
3.7
通讯作者:
Liang H
Liang H
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Lei S;Ding Y;Fu Y;Wu S;Xie X;Wang C;Liang H

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TW-37是一种新型、强效的非肽类Bcl-2小分子抑制剂。研究了其在结直肠癌(CRC)细胞中的活性。在HCT-116细胞和原代人结肠癌细胞中,仅nM浓度的TW-37处理有效抑制细胞存活和增殖。TW-37还诱导CRC细胞中的caspase-3/9和凋亡活化。在TW-37处理的CRC细胞中观察到反馈自噬激活。通过靶向shRNA抑制药物自噬或Beclin-1敲低增强TW-37诱导的CRC细胞凋亡和杀伤。在体内,静脉注射TW-37抑制小鼠HCT-116肿瘤生长。TW-37对Beclin-1沉默的HCT-116肿瘤的抗肿瘤活性进一步增强。总之,TW-37靶向Bcl-2家族蛋白在体外和体内有效抑制CRC细胞生长。反馈自噬激活的抑制可以进一步敏化TW-37。
TW-37 is a novel, potent and non-peptide Bcl-2 small-molecule inhibitor. Its activity in colorectal cancer (CRC) cells is studied. In both HCT-116 cells and primary human colon cancer cells, treatment with TW-37 at only nM concentration efficiently inhibited cell survival and proliferation. TW-37 also induced caspase-3/9 and apoptosis activation in CRC cells. Feedback autophagy activation was observed in TW-37-treated CRC cells. Reversely pharmacological autophagy inhibition or Beclin-1 knockdown by targeted-shRNA potentiated TW-37-induced apoptosis and killing of CRC cells. In vivo, intravenous injection of TW-37 inhibited HCT-116 tumor growth in mice. TW-37’s anti-tumor activity was further potentiated against Beclin-1-silenced HCT-116 tumors. Together, targeting Bcl-2 family protein by TW-37 efficiently inhibits CRC cell growth in vitro and in vivo. Inhibition of feedback autophagy activation could further sensitize TW-37.
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