癌变·畸变·突变 ›› 2025, Vol. 37 ›› Issue (2): 89-95,104.doi: 10.3969/j.issn.1004-616x.2025.02.001

• 论著 •    下一篇

食管鳞癌中STMN3高表达及其促癌作用机制

郭婧, 谢观超, 王意浓, 蔡岩, 张钰, 王明荣, 郝佳洁   

  1. 国家癌症中心/国家肿瘤临床医学研究中心/中国医学科学院北京协和医学院肿瘤医院, 分子肿瘤学全国重点实验室, 北京 100021
  • 收稿日期:2025-01-05 修回日期:2025-03-04 出版日期:2025-03-30 发布日期:2025-04-11
  • 通讯作者: 郝佳洁
  • 作者简介:郭婧,E-mail:gj102066@163.com。
  • 基金资助:
    国家自然科学基金(81930077);中国医学科学院医学与健康科技创新工程(2021-1-I2M-018)

High expression of STMN3 and its oncogenic mechanism in esophageal squamous cell carcinoma

GUO Jing, XIE Guanchao, WANG Yinong, CAI Yan, ZHANG Yu, WANG Mingrong, HAO Jiajie   

  1. State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
  • Received:2025-01-05 Revised:2025-03-04 Online:2025-03-30 Published:2025-04-11

摘要: 目的:分析STMN3在食管鳞癌中的表达情况,研究其对食管鳞癌细胞恶性表型的影响及相关调控机制。方法:利用癌症基因组图谱(TCGA)数据库分析STMN3 mRNA在不同肿瘤中的表达情况及其与患者临床病理指标之间的相关性,癌症细胞系百科全书(CCLE)数据库分析食管鳞癌细胞系中STMN3 mRNA的表达情况。采用Western blot法检测食管鳞癌细胞系中STMN3蛋白及其调控的下游蛋白的表达水平;分别采用RT-qPCR和Western blot法检测STMN3 siRNA转染在食管癌细胞系中的敲低效率;用细胞增殖、集落形成及细胞凋亡实验检测STMN3对食管鳞癌细胞恶性表型的影响。结果:与对照组比较,STMN3 mRNA在食管鳞癌及多种肿瘤组织中高表达,且高表达的食管鳞癌患者预后较差(P<0.05)。敲低STMN3可显著降低食管鳞癌细胞的增殖和集落形成能力(P<0.01)。Western blot结果显示,敲低STMN3后,表皮生长因子受体(EGFR)的蛋白表达水平,EGFR、核糖体蛋白S6、非受体酪氨酸激酶SRC的磷酸化水平均降低。结论:STMN3在食管鳞癌组织中高表达,且STMN3通过激活EGFR相关信号通路促进食管鳞癌细胞的增殖。

关键词: STMN3, 食管鳞癌, 细胞增殖, 细胞凋亡, 表皮生长因子受体

Abstract: OBJECTIVE:To investigate expression and mechanism of STMN3 in malignancy of esophageal squamous cell carcinoma (ESCC). METHODS:Expression of STMN3 in different tumors was analyzed in the TCGA database and its correlation with clinicopathological parameters was evaluated. CCLE database and Western blot were used to detect expression of STMN3 mRNA and protein levels in ESCC cell lines in vitro. Knockdown efficiency of STMN3 siRNA transfection in the cell lines was detected by RT-qPCR and Western blot,respectively. Effects of STMN3 on malignant phenotype of ESCC cells were detected by cell proliferation,colony formation,and cell apoptosis assays. The changes in the expression of proliferation-related proteins regulated by STMN3 were detected by Western blot. RESULTS:Compared with control group,STMN3 mRNA and protein were highly expressed in ESCC tissues and cell lines. STMN3 expression was associated with prognosis of patients,and those with high STMN3 expression had significantly worse prognosis (P<0.05). Knocking down STMN3 significantly inhibited the proliferation and colony formation of ESCC cells (P<0.01). In addition,the protein levels of EGFR and the phosphorylation levels of EGFR,S6,and SRC were significantly reduced. CONCLUSION:STMN3 was highly expressed in ESCC tissues,and STMN3 promoted the proliferation of ESCC cells by activating the EGFR-related signaling pathway.

Key words: STMN3, esophageal squamous cell carcinoma, cell proliferation, cell apoptosis, EGFR

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