Matrine activates PTEN to induce growth inhibition and apoptosis in V600EBRAF harboring melanoma cells.

Matrine activates PTEN to induce growth inhibition and apoptosis in V600EBRAF harboring melanoma cells.
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苦参碱激活 PTEN,诱导含有黑色素瘤细胞的 V600EBRAF 生长抑制和细胞凋亡。

DOI:
10.3390/ijms140816040
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发表时间:
2013-07-31
影响因子:
5.6
通讯作者:
Cheng X
Cheng X
中科院分区:
生物学2区
文献类型:
--
作者:
Jin H;Sun Y;Wang S;Cheng X

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在这里,我们报告了一种天然化学苦参碱,它具有抗黑色素瘤的潜力,其PTEN激活机制。苦参碱有效地抑制几种癌细胞系的增殖,包括黑色素瘤V600 EBRAF窝藏M21细胞。流式细胞仪分析显示苦参碱可诱导M21细胞G 0/G1期阻滞,并呈剂量依赖性。用TUNEL法和Annexin-V/FITC染色法检测苦参碱诱导的M21细胞凋亡。分子机制研究表明,苦参碱上调磷酸酶和张力蛋白同源物在染色体10上的缺失(PTEN)的mRNA水平和蛋白质表达水平,导致抑制PI 3 K/Akt通路。苦参碱下调磷酸化Aktser 473的表达,激活p21和Bax,促进G 0/G1期细胞的增殖和凋亡。此外,与PI 3 K抑制剂LY 2940002一起,苦参碱增强了PI 3 K/Akt的抑制作用,从而抑制细胞增殖。总之,我们的研究结果表明,苦参碱是一个有前途的抗肿瘤药物候选人与其可能的PTEN激活机制,用于治疗癌症疾病,如黑色素瘤。
Here, we report a natural chemical Matrine, which exhibits anti-melanoma potential with its PTEN activation mechanism. Matrine effectively inhibited proliferation of several carcinoma cell lines, including melanoma V600EBRAF harboring M21 cells. Flow cytometry analysis showed Matrine induced G0/G1 cell cycle arrest in M21 cells dose-dependently. Apoptosis in M21 cells induced by Matrine was identified by Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) analysis and Annexin-V/FITC staining. Molecular mechanistic study suggested that Matrine upregulated both mRNA level and protein expression level of phosphatase and tensin homolog deleted on chromosome ten (PTEN), leading to inhibition of the PI3K/Akt pathway. Downregulation of phosphor-Aktser473 by Matrine activated p21 and Bax, which contributed to G0/G1 cell cycle and apoptosis. Besides, Matrine enhanced the PI3K/Akt inhibition effects to inhibit the cell proliferation with PI3K inhibitor, LY2940002. In summary, our findings suggest Matrine is a promising antitumor drug candidate with its possible PTEN activation mechanisms for treating cancer diseases, such as melanomas.
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