Novel betulin derivative induces anti-proliferative activity by G(2)/M phase cell cycle arrest and apoptosis in Huh7 cells.

Novel betulin derivative induces anti-proliferative activity by G(2)/M phase cell cycle arrest and apoptosis in Huh7 cells.
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新型β衍生物诱导Huh7细胞中G(2)/M相细胞周期停滞和凋亡的抗增殖活性。

DOI:
10.3892/ol.2017.7575
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发表时间:
2018-03
期刊:
影响因子:
2.9
通讯作者:
Wang T
Wang T
中科院分区:
医学4区
文献类型:
--
作者:
Zhuo ZJ;Xiao MJ;Lin HR;Luo J;Wang T

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桦木素(BT)已被确定为治疗肝细胞癌(HCC)的潜在益处。本研究结果表明,一种新的BT半合成衍生物3,28-二-(2-硝基-乙酰基)-氧-BT可有效降低Huh7细胞的活力。机制研究表明,3,28-二-(2-硝基-乙酰基)-氧- bt通过调节细胞周期调节蛋白抑制细胞周期G2期向M期过渡。进一步的研究表明,3,28-二-(2-硝基-乙酰基)-氧- bt可能触发Huh7细胞发生caspase依赖性凋亡,因为在亚g1期发现更多的细胞,这可能是poly(adp -核糖)聚合酶裂解和caspase激活的结果。此外,3,28-二-(2-硝基-乙酰基)-氧- bt诱导的细胞凋亡是线粒体介导的。本研究结果表明,在3,28-二-(2-硝基-乙酰基)-氧- bt处理后,bcl -2相关的X蛋白从细胞质转移到线粒体。值得注意的是,磷酸肌苷3-激酶/蛋白激酶B信号通路参与3,28-二-(2-硝基-乙酰基)-氧- bt处理的Huh7细胞。因此,本研究结果表明,3,28-二-(2-硝基-乙酰基)-氧- bt可能抑制HCC,这可能是治疗HCC的可能应用。
Betulin (BT) has been identified to exhibit potential benefits for treating hepatocellular carcinoma (HCC). The results of the present study demonstrated that a new semisynthetic derivative of BT, 3,28-di-(2-nitroxy-acetyl)-oxy-BT, may effectively decrease the viability of Huh7 cells. Mechanistic studies revealed that 3,28-di-(2-nitroxy-acetyl)-oxy-BT inhibited the transition between G2 and M phase of the cell cycle by regulating cell cycle regulatory proteins. Additional study revealed that 3,28-di-(2-nitroxy-acetyl)-oxy-BT may trigger Huh7 cells to undergo caspase-dependent apoptosis as an increased proportion of cells were identified in the sub-G1 phase, which may be a result of poly(ADP-ribose) polymerase cleavage and caspase activation. Furthermore, 3,28-di-(2-nitroxy-acetyl)-oxy-BT-induced apoptosis was mitochondrion-mediated. The results of the present study demonstrated that Bcl-2-associated X protein translocated to the mitochondria from the cytosol following 3,28-di-(2-nitroxy-acetyl)-oxy-BT treatment. Notably, the phosphoinositide 3-kinase/protein kinase B signaling pathway was involved in 3,28-di-(2-nitroxy-acetyl)-oxy-BT-treated Huh7 cells. Therefore, the results of the present study demonstrated that 3,28-di-(2-nitroxy-acetyl)-oxy-BT may inhibit HCC, which may be a possible application to treat HCC.
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