南方医科大学学报 ›› 2025, Vol. 45 ›› Issue (11): 2385-2393.doi: 10.12122/j.issn.1673-4254.2025.11.11

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TMCO1在胃癌中高表达与患者不良预后相关并通过抑制调亡促进肿瘤恶性进展

宋博文1(), 周仁杰1, 徐盈2, 施金冉2, 张志郅2, 李静2, 耿志军2, 宋雪2, 王炼1,2, 王月月2, 左芦根1,2()   

  1. 1.蚌埠医科大学第一附属医院胃肠外科,安徽 蚌埠 233030
    2.炎症相关性疾病基础与转化研究安徽省重点实验室,安徽 蚌埠 233030
  • 收稿日期:2025-04-22 出版日期:2025-11-20 发布日期:2025-11-28
  • 通讯作者: 左芦根 E-mail:songbowen@stu.bbmu.edu.cn;zuolugen@126.com
  • 作者简介:宋博文,在读硕士研究生,E-mail: songbowen@stu.bbmu.edu.cn
  • 基金资助:
    国家自然科学基金(82370534);安徽省卫生健康科研项目(AHWJ2022a019);安徽省高校杰出青年科研项目(2022AH020085);安徽省临床医学研究转化专项(202427b10020099)

Elevated TMCO1 expression in gastric cancer is associated poor prognosis and promotes malignant phenotypes of tumor cells by inhibiting apoptosis

Bowen SONG1(), Renjie ZHOU1, Ying XU2, Jinran SHI2, Zhizhi ZHANG2, Jing LI2, Zhijun GENG2, Xue SONG2, Lian WANG1,2, Yueyue WANG2, Lugen ZUO1,2()   

  1. 1.Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical University, Bengbu 233030, China
    2.Anhui Key Laboratory of Basic and Translational Research on Inflammation-related Diseases, Bengbu 233030, China
  • Received:2025-04-22 Online:2025-11-20 Published:2025-11-28
  • Contact: Lugen ZUO E-mail:songbowen@stu.bbmu.edu.cn;zuolugen@126.com
  • Supported by:
    National Natural Science Foundation of China(82370534)

摘要:

目的 探究跨膜和卷曲螺旋结构域1(TMCO1)在胃癌组织中的表达,明确其对胃癌患者预后的影响,并分析其机制。 方法 基于癌症公共数据库和我院行胃癌根治术的患者临床资料,分析TMCO1在胃癌中的表达情况和对胃癌进展及其预后的影响。利用KEGG和GO分析其可能的生物学功能和作用机制。采用慢病毒载体构建TMCO1高表达和沉默的胃癌细胞株(HGC-27),并以空载处理的胃癌细胞作为对照,体外实验观察其对胃癌细胞凋亡、增殖、侵袭和迁移能力的影响。 结果 TMCO1在胃癌组织中表达升高(P<0.05),高表达TMCO1与胃癌恶性进展参数呈正相关(P<0.001),且TMCO1高表达组的5年生存率低于低表达组(P<0.05)。富集分析结果显示,TMCO1可能通过Wnt信号影响胃癌细胞凋亡。CCK-8结果显示,上调胃癌细胞系TMCO1的表达促进肿瘤细胞的增殖(P<0.05),下调反之(P<0.05);流式细胞术结果显示,TMCO1高表达组的胃癌细胞凋亡率低于TMCO1沉默组(P<0.05);划痕和Transwell实验结果显示,上调TMCO1的表达增加胃癌细胞的迁移(P<0.05)和侵袭能力(P<0.05)。免疫印迹结果显示,上调TMCO1高表达增加β-catenin的水平(P<0.05),下调反之(P<0.05)。 结论 TMCO1在胃癌组织中表达升高,促进胃癌患者的恶性进展并影响远期预后,其可能和激活Wnt/β-catenin信号抑制胃癌细胞凋亡有关。

关键词: 胃癌, 跨膜和卷曲螺旋结构域1, 凋亡, 预后, Wnt/β-catenin

Abstract:

Objective To investigate the impact of high expression of transmembrane and coiled helix structural domain 1 (TMCO1) on prognosis of gastric cancer and the possible mechanisms. Methods TMCO1 expression in gastric cancer and its effect on gastric cancer progression and prognosis were analyzed using publicly available databases and clinical data of patients undergoing radical surgery in our hospital, and its possible biological functions were explored using KEGG and GO analyses. In gastric cancer HGC-27 cells, the effects of lentivirus-mediated TMCO1 overexpression and TMCO1 silencing on cell apoptosis, proliferation, invasion and migration were examined. Results TMCO1 expression was significantly elevated in gastric cancer tissues (P<0.05), and its high expression was positively correlated with cancer progression (P<0.001) and a lowered postoperative 5-year survival rate of the patients (P<0.05). Bioinformatic analyses suggested that TMCO1 may affect gastric cancer cell apoptosis via Wnt signaling. In HGC-27 cells, TMCO1 overexpression significantly promoted tumor cell proliferation, inhibited cell apoptosis, and enhanced cell migration and invasion, whereas TMCO1 silencing produced the opposite effects. Western blotting showed that β-catenin levels were significantly upregulated in TMCO1-overexpressing cells and downregulated in cells with TMCO1 silencing. Conclusion TMCO1 is overexpressed in gastric cancer tissues, and its high expression promotes gastric cancer progression and affects long-term prognosis of the patients possibly by activating the Wnt/ β-catenin signaling pathway to inhibit apoptosis of gastric cancer cells.

Key words: gastric cancer, transmembrane and coiled-coil domain 1, apoptosis, prognosis, Wnt/β-catenin