Wei Xingchuan, DU Zhi-Yun, Cui Xiao-Xing, Verano Michael, Mo Rong Qing, Tang Zhi Kai, Conney Allan H, Zheng Xi, Zhang Kun
Department of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P.R. China.
Oncol Lett. 2012 Aug;4(2):279-284. doi: 10.3892/ol.2012.710. Epub 2012 May 10.
Curcumin is a non-nutritive yellow pigment found in the spice turmeric, which is derived from the rhizome of the plant Curcuma longa Linn. Six cyclohexanone analogues of curcumin (A(1)-A(6)) were investigated for their effects on growth and apoptosis in PC-3 human prostate cancer cells. The ability of these compounds to inhibit NF-κB activity in PC-3 cells was also determined. Five out of the six curcumin analogues (A(2)-A(6)) had stronger inhibitory effects compared to curcumin on the growth of cultured PC-3 cells. Compounds A(2)-A(6) also had stronger stimulatory effects on apoptosis in PC-3 cells than curcumin, and these curcumin analogues more potently inhibited NF-κB activity than curcumin. The inhibitory effects of these compounds on NF-κB activity correlated with their effects on growth inhibition and apoptosis stimulation in PC-3 cells. The results of the present study provide a rationale for in vivo studies with A(2)-A(6) using suitable animal models of prostate cancer.
姜黄素是一种存在于姜黄香料中的非营养性黄色色素,姜黄源自植物姜黄(Curcuma longa Linn)的根茎。研究了姜黄素的六种环己酮类似物(A(1)-A(6))对PC-3人前列腺癌细胞生长和凋亡的影响。还测定了这些化合物抑制PC-3细胞中NF-κB活性的能力。六种姜黄素类似物中的五种(A(2)-A(6))对培养的PC-3细胞生长的抑制作用比姜黄素更强。化合物A(2)-A(6)对PC-3细胞凋亡的刺激作用也比姜黄素更强,并且这些姜黄素类似物比姜黄素更有效地抑制NF-κB活性。这些化合物对NF-κB活性的抑制作用与其对PC-3细胞生长抑制和凋亡刺激的作用相关。本研究结果为使用合适的前列腺癌动物模型对A(2)-A(6)进行体内研究提供了理论依据。