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Naringin induces apoptosis of gastric carcinoma cells via blocking the PI3K/AKT pathway and activating pro‑death autophagy.
Molecular Medicine Reports ( IF 3.4 ) Pub Date : 2021-09-07 , DOI: 10.3892/mmr.2021.12412
Cuixiang Xu 1 , Xiaoyan Huang 1 , Yubin Huang 2 , Xiao Liu 2 , Min Wu 3 , Jianhua Wang 4 , Xianglong Duan 4
Affiliation  

Naringin (Nar) is one of the natural glycosides extracted from pomelo and other citrus fruits. It has various pharmacological activities, including anti‑inflammatory, antioxidant, anti‑proliferative and anti‑cancer. However, the underlying mechanisms by which Nar regulates apoptosis and autophagy in gastric cancer remain unclear. Thus, the present study aimed to assess the therapeutic effect of Nar and the underlying mechanisms. SNU‑1 cell proliferation was determined using Cell Counting Kit‑8 assay. Cell morphological changes were observed under a phase‑contrast microscope. The changes in the cell cycle were determined using flow cytometry analysis and the changes in cell apoptosis were determined using flow cytometry, Hoechst 33258 and TUNEL staining. The protein levels pertaining to the PI3K/AKT pathway and cell apoptosis and autophagy were monitored using western blot analysis. The results demonstrated that Nar significantly inhibited SNU‑1 cell growth and induced cell cycle arrest in the G0/G1 phase and cell apoptosis. Further mechanistic studies demonstrated that Nar blocked the PI3K/AKT pathway, activated cell autophagy and stimulated the expression of apoptosis‑associated protein cleaved caspase 3 and Bax, but decreased the expression of Bcl‑2. Preincubating SNU‑1 cells with 3‑methyladenine, a cell‑autophagy inhibitor, significantly alleviated the effects of Nar in promoting cell apoptosis and cleaved caspase 3 expression. It was concluded that Nar promoted SNU‑1 cell apoptosis via blocking the PI3K/AKT signaling pathway and activating cell autophagy.

中文翻译:

柚皮苷通过阻断 PI3K/AKT 通路和激活促死亡自噬诱导胃癌细胞凋亡。

柚皮苷(Nar)是从柚子和其他柑橘类水果中提取的天然苷之一。它具有多种药理活性,包括抗炎、抗氧化、抗增殖和抗癌。然而,Nar调节胃癌细胞凋亡和自噬的潜在机制仍不清楚。因此,本研究旨在评估 Nar 的治疗效果及其潜在机制。SNU-1 细胞增殖使用细胞计数试剂盒-8 测定法确定。在相差显微镜下观察细胞形态变化。使用流式细胞术分析确定细胞周期的变化,使用流式细胞术、Hoechst 33258和TUNEL染色确定细胞凋亡的变化。使用蛋白质印迹分析监测与 PI3K/AKT 通路和细胞凋亡和自噬有关的蛋白质水平。结果表明,Nar显着抑制SNU-1细胞生长并诱导细胞周期停滞在G0/G1期和细胞凋亡。进一步的机制研究表明,Nar 阻断 PI3K/AKT 通路,激活细胞自噬并刺激凋亡相关蛋白裂解 caspase 3 和 Bax 的表达,但降低 Bcl-2 的表达。用细胞自噬抑制剂 3-甲基腺嘌呤预孵育 SNU-1 细胞可显着减轻 Nar 在促进细胞凋亡和切割 caspase 3 表达方面的作用。得出结论,Nar通过阻断PI3K/AKT信号通路,激活细胞自噬,促进SNU-1细胞凋亡。结果表明,Nar显着抑制SNU-1细胞生长并诱导细胞周期停滞在G0/G1期和细胞凋亡。进一步的机制研究表明,Nar 阻断 PI3K/AKT 通路,激活细胞自噬并刺激凋亡相关蛋白裂解 caspase 3 和 Bax 的表达,但降低 Bcl-2 的表达。用细胞自噬抑制剂 3-甲基腺嘌呤预孵育 SNU-1 细胞可显着减轻 Nar 在促进细胞凋亡和切割 caspase 3 表达方面的作用。得出结论,Nar通过阻断PI3K/AKT信号通路,激活细胞自噬,促进SNU-1细胞凋亡。结果表明,Nar显着抑制SNU-1细胞生长并诱导细胞周期停滞在G0/G1期和细胞凋亡。进一步的机制研究表明,Nar 阻断 PI3K/AKT 通路,激活细胞自噬并刺激凋亡相关蛋白裂解 caspase 3 和 Bax 的表达,但降低 Bcl-2 的表达。用细胞自噬抑制剂 3-甲基腺嘌呤预孵育 SNU-1 细胞可显着减轻 Nar 在促进细胞凋亡和切割 caspase 3 表达方面的作用。得出结论,Nar通过阻断PI3K/AKT信号通路,激活细胞自噬,促进SNU-1细胞凋亡。进一步的机制研究表明,Nar 阻断 PI3K/AKT 通路,激活细胞自噬并刺激凋亡相关蛋白裂解 caspase 3 和 Bax 的表达,但降低 Bcl-2 的表达。用细胞自噬抑制剂 3-甲基腺嘌呤预孵育 SNU-1 细胞可显着减轻 Nar 在促进细胞凋亡和切割 caspase 3 表达方面的作用。得出结论,Nar通过阻断PI3K/AKT信号通路,激活细胞自噬,促进SNU-1细胞凋亡。进一步的机制研究表明,Nar 阻断 PI3K/AKT 通路,激活细胞自噬并刺激凋亡相关蛋白裂解 caspase 3 和 Bax 的表达,但降低 Bcl-2 的表达。用细胞自噬抑制剂 3-甲基腺嘌呤预孵育 SNU-1 细胞可显着减轻 Nar 在促进细胞凋亡和切割 caspase 3 表达方面的作用。得出结论,Nar通过阻断PI3K/AKT信号通路,激活细胞自噬,促进SNU-1细胞凋亡。显着减轻了 Nar 促进细胞凋亡和切割 caspase 3 表达的作用。得出结论,Nar通过阻断PI3K/AKT信号通路,激活细胞自噬,促进SNU-1细胞凋亡。显着减轻了 Nar 促进细胞凋亡和切割 caspase 3 表达的作用。得出结论,Nar通过阻断PI3K/AKT信号通路,激活细胞自噬,促进SNU-1细胞凋亡。
更新日期:2021-09-07
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