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Apoptotic Effects of Melandryum firmum Root Extracts in Human SH-SY5Y Neuroblastoma Cells

机译:硬汉兰根提取物在人SH-SY5Y神经母细胞瘤细胞中的凋亡作用

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摘要

Melandryum firmum is a biennial plant that has been used in traditional medicine for treatment of bacterial and fungal infection. Here, we investigated molecular mechanisms underlying apoptotic effects of Melandryum firmum root extract (MFRE) in neuroblastoma cells, since the effect of this natural compound on cancer cells has not been fully clarified. The root extract of M. firmum reduced cell proliferation, as revealed by cell viability assay. However, MFRE-treated cells exhibited morphological changes including cell rounding, neurite retraction and membrane blebbing. These alterations of cellular shape suggest this morphological change might be due to the apoptosis which shows fragmented DNA. In addition, MFRE up-regulated the pro-apoptotic protein Bax and down-regulated the anti-apoptotic protein Bcl-2 and Mcl-1, which also finally activated cleaved caspase-3 in a dose-dependent manner, as determined by western blot analyses. Together, these findings demonstrate that apoptotic and cytotoxic effects of MFRE on SH-SY5Y cells are mediated by intrinsic mitochondria-mediated caspase pathway and that this natural extract might be effective as an anticancer agent for neuroblastoma malignancies.
机译:刚果植物(Melandryum firmum)是一种两年生植物,已用于传统医学中,用于治疗细菌和真菌感染。在这里,我们调查了神经母细胞瘤细胞中苦瓜根提取物(MFRE)的凋亡作用的分子机制,因为这种天然化合物对癌细胞的作用尚未完全阐明。如细胞活力测定所揭示的,牢固的支原体的根提取物减少了细胞增殖。但是,经MFRE处理的细胞表现出形态变化,包括细胞变圆,神经突缩回和膜起泡。这些细胞形状的改变表明,这种形态变化可能是由于细胞凋亡所致,该细胞凋亡显示了片段化的DNA。此外,MFRE上调凋亡前蛋白Bax并下调抗凋亡蛋白Bcl-2和Mcl-1,它们最终也以剂量依赖性方式激活裂解的caspase-3,如蛋白印迹法所测定分析。在一起,这些发现表明,MFRE对SH-SY5Y细胞的凋亡和细胞毒性作用是由内在的线粒体介导的半胱天冬酶途径介导的,并且这种天然提取物可能有效用作神经母细胞瘤恶性肿瘤的抗癌剂。

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