基础医学与临床 ›› 2025, Vol. 45 ›› Issue (2): 197-202.doi: 10.16352/j.issn.1001-6325.2025.02.0197

• 研究论文 • 上一篇    下一篇

敲低DRAM2抑制肺癌细胞系A549的增殖和迁移

楼海均1, 童卓云1, 张振宇1, 阿合叶尔克·马合沙提1, 孟·孟根2, 乌都木丽1*   

  1. 新疆医科大学 1.基础医学院 病理教研室;
    2.第五临床医学院 检验科,新疆 乌鲁木齐 830017
  • 收稿日期:2024-07-01 修回日期:2024-10-31 出版日期:2025-02-05 发布日期:2025-01-17
  • 通讯作者: *wudumuli@xjmu.edu.cn
  • 基金资助:
    新疆维吾尔自治区重点研发计划(2022B03019-1-1);新疆维吾尔自治区自然科学基金青年科学基金项目(2020D01C175)

Knockdown of DRAM2 inhibits the proliferation and migration of lung cancer cell line A549

LOU Haijun1, TONG Zhuoyun1, ZHANG Zhenyu1, Aheyerk·MAHESHATI1, MENG·Menggen2, WUDU Muli1*   

  1. 1. Department of Pathology, School of Basic Medicine;
    2. Department of Clinical Laboratory, the Fifth Clinical College of Medicine, Xinjiang Medical University, Urumqi 830017, China
  • Received:2024-07-01 Revised:2024-10-31 Online:2025-02-05 Published:2025-01-17
  • Contact: *wudumuli@xjmu.edu.cn

摘要: 目的 探讨DNA损伤调节自噬因子2(DRAM2)如何通过调节p53和自噬对非小细胞肺癌(NSCLC)细胞增殖和迁移的影响。方法 利用慢病毒技术敲低A549细胞系DRAM2基因,免疫荧光和Western blot检测自噬标志物。CCK8和Transwell实验检测细胞增殖和迁移,同时探究激活自噬和p53敲低对DRAM2敲低细胞自噬及功能的影响。结果 敲低DRAM2抑制A549细胞p62表达上调(P<0.05)和LC3-Ⅱ降低(P<0.05)。敲低DRAM2抑制了NSCLC细胞的增殖(P<0.001)和迁移(P<0.001)。激活自噬能够部分消除敲低DRAM2对细胞增殖(P<0.01)和迁移(P<0.01)的抑制作用。当DRAM2和p53同时敲低时,恢复自噬、细胞增殖(P<0.05)和迁移能力(P<0.001)。结论 敲低DRAM2抑制肺瘤细胞系A549的增殖和迁移,为未来非小细胞肺癌的治疗策略提供了可能的干预方向。

关键词: 非小细胞肺癌, DNA损伤调节自噬调节因子2(DRAM2), 肿瘤蛋白p53, 自噬

Abstract: Objective To investigate the impact of DNA damage-regulated autophagy factor 2 (DRAM2) on the proliferation and migration of non-small cell lung cancer (NSCLC) cells through tumor protein p53 (p53) and autophagy. Methods DRAM2 gene was knocked down using lentiviral technology to establish NSCLC cell lines, and autophagy markers were detected by immunofluorescence and Western blot. CCK8 and Transwell assays were used to detect cell proliferation and migration. The effects of autophagy activation and p53 knockdown on autophagy and functions of DRAM2-knockdown cells were examined. Results Knockdown of DRAM2 inhibited NSCLC cells, with upregulation of p62 expression (P<0.05) and decreased level of LC3-Ⅱ (P<0.05).Knockdown of DRAM2 suppressed the proliferation (P<0.001) and migration (P<0.001) of NSCLC cells. Activation of auto- phagy partially reversed the inhibitory effects of DRAM2 knockdown on cell proliferation (P<0.01) and migration (P<0.01).When DRAM2 and p53 were knocked down simultaneously, autophagy, cell proliferation (P<0.05) and migration abilities (P<0.001) were restored. Conclusions Knockdown of DRAM2 inhibits the proliferation and migration of lung cancer cell line A549, providing a potential intervention direction for the development of therapeutic strategies.

Key words: non-small cell lung cancer, DRAM2, p53, autophagy

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