A new curcumin derivative, HBC, interferes with the cell cycle progression of colon cancer cells via antagonization of the Ca2+/calmodulin function.

A new curcumin derivative, HBC, interferes with the cell cycle progression of colon cancer cells via antagonization of the Ca2+/calmodulin function.
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一种新的姜黄素衍生物 HBC 通过拮抗 Ca2/钙调蛋白功能来干扰结肠癌细胞的细胞周期进程。

DOI:
10.1016/j.chembiol.2004.08.015
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发表时间:
2004
影响因子:
--
通讯作者:
H. Kwon
H. Kwon
中科院分区:
生物1区
文献类型:
--
作者:
J. Shim;Jiyong Lee;Hyun;So;H. Kwon

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HBC(4-{3,5-双-[2-(4-羟基-3-甲氧基-苯基)-乙基]-4,5-二氢-吡唑-1-基}-苯甲酸)是一种新近发现的姜黄素衍生物,对多种肿瘤细胞系具有较强的抑制活性。在本研究中,我们确定了Ca 2 +/钙调素(Ca 2 +/CaM)作为HBC的直接靶蛋白,利用噬菌体展示生物淘选。Ca ~(2+)/CaM表达载体与固定化的HBC特异性结合,且这种结合具有Ca ~(2+)依赖性。此外,灵活的对接建模表明,HBC是兼容的结合腔的一个已知的抑制剂,W7,在C-末端的疏水口袋的Ca 2 +/CaM。在生物学系统中,HBC诱导ERK 1/2磷酸化延长和p21 WAF 1表达激活,导致HCT 15结肠癌细胞G 0/G1期阻滞。提示HBC通过拮抗Ca ~(2+)/CaM功能抑制结肠癌细胞的细胞周期进程。
HBC (4-{3,5-Bis-[2-(4-hydroxy-3-methoxy-phenyl)-ethyl]-4,5-dihydro-pyrazol-1-yl}-benzoic acid) is a recently developed curcumin derivative which exhibits potent inhibitory activities against the proliferation of several tumor cell lines. In the present study, we identified Ca2+/calmodulin (Ca2+/CaM) as a direct target protein of HBC using phage display biopanning. Ca2+/CaM-expressing phages specifically bound to the immobilized HBC, and the binding was Ca2+dependent. Moreover, flexible docking modeling demonstrated that HBC is compatible with the binding cavity for a known inhibitor, W7, in the C-terminal hydrophobic pocket of Ca2+/CaM. In biological systems, HBC induced prolonged phosphorylation of ERK1/2 and activated p21WAF1expression, resulting in the induction of G0/G1cell cycle arrest in HCT15 colon cancer cells. These results suggest that HBC inhibits the cell cycle progression of colon cancer cells via antagonizing of Ca2+/CaM functions.
三氟拉嗪与猪脑钙调蛋白和骨骼肌肌钙蛋白结合 C.
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发表时间: 1997-01-21
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