实用医学杂志 ›› 2022, Vol. 38 ›› Issue (7): 821-827.doi: 10.3969/j.issn.1006⁃5725.2022.07.009

• 基础研究 • 上一篇    下一篇

线粒体相关细胞凋亡诱导因子3通过调控STAT3信号通路影响结直肠癌细胞增殖与迁移

梁炜杰 张耀伟 王永佳 翁佳雯 郑奕琳 丁轶   

  1. 南方医科大学南方医院放疗科(广州 510515)

  • 出版日期:2022-04-10 发布日期:2022-04-10
  • 通讯作者: 丁轶 E⁃mail:dingyi197980@126.com
  • 基金资助:
    国家自然科学基金面上项目(编号:82073342);南方医科大学南方医院院长基金(编号:2020C006)


AIFM3 interferes the proliferation and migration of colorectal cancer cells by regulating STAT3 signaling pathway

LIANG Weijie,ZHANG Yaowei,WANG Yongjia,WENG Jiawen,ZHENG Yilin,DING Yi.   

  1. Department of Radiation Oncology,Nanfang Hospital,Southern Medical University,Guangzhou 510515,China

  • Online:2022-04-10 Published:2022-04-10
  • Contact: DING Yi E⁃mail:dingyi197980@126.com

摘要:

目的 探讨线粒体相关细胞凋亡诱导因子 3(AIFM3)对结直肠癌细胞增殖及迁移的影响及其分子机制。方法 采用生物学信息方法预测 AIFM3 的表达与结直肠癌组织类型和预后的关系,用免疫组化法检测我院组织样本中AIFM3蛋白的表达,并分析其与预后的关系。利用慢病毒建立稳定干扰 AIFM3 表达的细胞株 HCT116 SW620,并以 CCK8 和平板克隆实验检测细胞的增殖能力变化,以 Transwell 迁移 实验检测细胞的迁移能力变化。Western blot 法验证 AIFM3 基因的沉默效果及相关通路蛋白表达情况。 结果 相比于癌旁组织,AIFM3在结直肠癌中的表达显著降低,且高表达组的无病生存率、总生存率显著高 于低表达组(P < 0.05);抑制 AIFM3 可显著抑制 HCT116 SW620 细胞的增殖和迁移能力。GSEA 分析显 AIFM3 STAT3 信号通路相关;而 Western blot 结果表明,敲低 AIFM3 后,STAT3、P⁃STAT3 的蛋白表达水 平显著上调。结论 AIFM3 在结直肠癌组织表达显著降低。干扰 HCT116 SW620 细胞中 AIFM3 的表 达可增加细胞的增殖与迁移能力,其机制可能与 STAT3 信号通路有关。AIFM3 可作为结直肠癌的潜在治 疗靶点。

关键词:

结直肠癌,  , AIFM3, 细胞增殖

Abstract:

Objective To explore the effect of apoptosis⁃inducing factor mitochondria associated 3(AIFM3 on colorectal cancer cells and its mechanism. Methods The relationship between the expression of AIFM3 and the tissue type and prognosis of colorectal cancer was detected bybio⁃informatics and verified by immunohistochemistry. We knockdown the expression of AIFM3 in cell lines HCT116 and SW620 by lentivirus. The silencing effect of AIFM3 gene was verified by Western blot,the proliferation ability of cells was detected by CCK8 experiment and plate cloning experiment,and the migration ability of cells was detected by transwell migration assay. Results The expression of AIFM3 in colorectal cancer was lower than that in adjacent tissues,and its expression was related to the prognosis of colorectal cancer;knockdown of AIFM3 could significantly inhibit the proliferation and migration of HCT116 and SW620 cells. GSEA analysis showed that there was a correlation between AIFM3 and STAT3 signal pathway. Western blot showed that the protein expression levels of STAT3 and p⁃STAT3 were significantly up⁃regu⁃ lated after knockdown of aifm3. Conclusions The expression of aifm3 was significantly down regulated in colorectal cancer. Knockdown the expression of aifm3 in HCT116 and SW620 cells could increase cell proliferation and migra⁃ tion,and its mechanism may be related to STAT3 signaling pathway.

Key words:

colorectal cancer, AIFM3, cell proliferation