粉防己碱抑制前列腺癌细胞迁移和侵袭并通过诱导凋亡抑制细胞增殖

粉防己碱作为一种传统的中药，在多种肿瘤细胞中呈现显著的抗肿瘤活性。然而，粉防己碱在前列腺癌细胞中的作用却知之甚少，且其作用于前列腺癌的具体机制也尚未有人阐述。为了探究粉防己碱对前列腺癌DU145和PC-3两种细胞系生长抑制、凋亡诱导、迁移和侵袭抑制等方面的作用，通过MTT实验和克隆形成实验检测其对前列腺癌细胞的生长抑制能力，采用流式细胞仪检测其对前列腺癌细胞的凋亡诱导作用。后通过Western blotting实验检测粉防己碱处理后两种前列腺癌细胞系中PARP、Caspase-3、Akt、p-Akt、Bcl-2、Bax等蛋白的表达情况。而细胞划痕实验和transwell侵袭实验则分别用来检测粉...

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Published in亚洲男性学杂志：英文版 no. 5; pp. 850 - 853
Main Author Wei Liu Bo KOU Zhen-Kun Ma Xiao-Shuang Tang Chuan Lv Min Ye Jia-Qi Chen Lei Li Xin-Yang Wang Da-Lin He
Format Journal Article
LanguageEnglish
Published 2015
Subjects
侵袭
凋亡
前列腺癌
增殖
粉防己碱
迁移
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Summary:粉防己碱作为一种传统的中药，在多种肿瘤细胞中呈现显著的抗肿瘤活性。然而，粉防己碱在前列腺癌细胞中的作用却知之甚少，且其作用于前列腺癌的具体机制也尚未有人阐述。为了探究粉防己碱对前列腺癌DU145和PC-3两种细胞系生长抑制、凋亡诱导、迁移和侵袭抑制等方面的作用，通过MTT实验和克隆形成实验检测其对前列腺癌细胞的生长抑制能力，采用流式细胞仪检测其对前列腺癌细胞的凋亡诱导作用。后通过Western blotting实验检测粉防己碱处理后两种前列腺癌细胞系中PARP、Caspase-3、Akt、p-Akt、Bcl-2、Bax等蛋白的表达情况。而细胞划痕实验和transwell侵袭实验则分别用来检测粉防己碱对前列腺癌细胞的迁移和侵袭能力。结果显示，粉防己碱可剂量依赖性和时间依赖性地抑制前列腺癌细胞系DU145和PC-3的生长；且经粉防己碱处理后，两种前列腺癌细胞系的细胞克隆数明显受到抑制。且粉防己碱可抑制两种前列腺癌细胞系的侵袭，并显著抑制其迁移能力。由此可知，粉防己碱对前列腺癌细胞的增殖、迁移和侵袭有显著抑制作用。另外，粉防己碱可剂量依赖性地诱导前列腺癌细胞的凋亡，且此过程是通过caspase级联反应的激活和PI3K-Akt信号通路的抑制而得以实现的。上述结果提示粉防己碱在临床中可作为前列腺癌治疗的一种潜在治疗药物。
Bibliography:Tetrandrine （TET）, a traditional Chinese medicine, exerts remarkable anticancer activity on various cancer cells. However, little is known about the effect of TET on human prostate cancer cells, and the mechanism of function of TET on prostate cancer has not yet been elucidated. To investigate the effects of TET on the suppression of proliferation, induction of apoptosis, and inhibition of migration and invasion in human prostate cancer cell lines, DU145 and PC-3. Inhibition of growth was determined by 3-（4,5-dimethylthiazol-2-yl）-2,5-diphenyltetrazolium bromide assay and clone formation assay, and flow cytometry analysis was performed to detect the induction of apoptosis. Activation of poly （ADP-ribose） polymerase, caspase-3, Akt, phospho-Akt, Bcl-2, and Bax was analyzed by Western blotting. Wound healing assay and transwell migration assay were used to evaluate the effect of TET on migration and invasion of cancer cells. TET inhibited the growth of DU145 and PC-3 cells in a dose- and time-dependent manner. Cell cloning was inhibited in the presence of TET in DU145 and PC-3 cells. TET suppressed the migration of DU145 and PC-3 cells. Transwell invasion assay showed that TET significantly weakened invasion capacity of DU 145 and PC-3 cells. TET exhibited strong inhibitory effect on proliferation, migration, and invasion of prostate cancer cells. In addition, TET induced apoptosis in a dose-dependent manner by activating the caspase cascade and inhibiting phosphoinositide 3-kinase-Akt signal pathway. The accumulating evidence suggests that TET could be a potential therapeutic candidate against prostate cancer in a clinical setting.
apoptosis; invasion; migration; proliferation; prostate cancer; tetrandrine
31-1795/R
ISSN:1008-682X
1745-7262