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第44卷第12期 南京医科大学学报(自然科学版)
2024年12月 Journal of Nanjing Medical University(Natural Sciences) ·1649 ·
·基础研究·
SAMD13通过激活ERK1/2对胶质瘤细胞增殖和侵袭的影响
季明德 ,廖俊进 ,高彩月 ,倪思琦 ,高培宇 ,王迎伟 ,邱 文 ,赵晨卉 4*
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南京中医药大学附属医院,检验科,江苏 南京 210029;南京医科大学基础医学院免疫学系,江苏 南京 211166;南京医
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科大学第一临床医学院临床医学系(长学制),江苏 南京 211166;南京医科大学第一附属医院肿瘤科,江苏 南京
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210029
[摘 要] 目的:检测胶质瘤组织和细胞中无菌α基序结构域蛋白13(sterile alpha motif domain⁃containing protein 13,SAMD13)
的表达情况,并探究SAMD13表达对胶质瘤细胞增殖和侵袭的影响和调控机制。方法:使用GEPIA数据库分析胶质瘤患者癌
组织中SAMD13的表达及其与预后的相关性。行RT⁃PCR和Western blot检测胶质瘤细胞系(U373、U87和U251)中SAMD13的
表达情况。构建SAMD13过表达质粒(pIRES2⁃SAMD13)和SAMD13 shRNA质粒(shSAMD13),转染细胞后行Western blot、CCK⁃8
和Transwell实验,检测过表达和沉默SAMD13基因对于U373细胞增殖和侵袭的影响,同时检查Akt1、ERK1/2和STAT3的表达
和磷酸化水平。此外,在转染pIRES2⁃SAMD13的同时,加入ERK1/2抑制剂(U0126),通过CCK⁃8和Transwell实验观察其对细
胞增殖和侵袭的影响。结果:胶质瘤患者癌组织中SAMD13的表达显著高于癌旁组织,并与患者不良预后密切相关。U373、
U87 和 U251 3 种胶质瘤细胞系均表达 SAMD13,以 U373 细胞表达最为显著。在 U373 细胞中转染 pIRES2⁃SAMD13 和
shSAMD13,可分别过表达和沉默SAMD13基因,并分别促进和抑制细胞的增殖和侵袭。此外,过表达和沉默SAMD13可分别
显著增强和减弱U373细胞中ERK1/2的磷酸化,而对Akt1和STAT3的磷酸化无明显影响。U0126可显著抑制由SAMD13过表
达所诱发的U373细胞增殖和侵袭,但对SAMD13的表达无明显影响。结论:胶质瘤组织和细胞中均高表达SAMD13,上调的
SAMD13可通过激活ERK1/2促进胶质瘤细胞的增殖和侵袭。
[关键词] 胶质瘤;SAMD13;ERK1/2;增殖;侵袭
[中图分类号] R739.4 [文献标志码] A [文章编号] 1007⁃4368(2024)12⁃1649⁃08
doi:10.7655/NYDXBNSN240996
The effects of SAMD13 on glioma cell proliferation and invasion via activating ERK1/2
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JI Mingde ,LIAO Junjin ,GAO Caiyue ,NI Siqi ,GAO Peiyu ,WANG Yingwei ,QIU Wen ,ZHAO Chenhui 4*
1 Department of Laboratory Medicine,Affiliated Hospital of Nanjing University of Chinese Medicine,Nanjing 210029;
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2 Department of Immunology,School of Basic Medicine,Nanjing Medical University,Nanjing 211166;Clinical
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Medical Science of the First Clinical Medical College,Nanjing Medical University,Nanjing 211166;Department of
Oncology,the First Affiliated Hospital of Nanjing Medical University,Nanjing 210029,China
[Abstract] Objective:To detect the expression of sterile alpha motif domain⁃containing protein 13(SAMD13)in glioma tissues and
cells,and explore the effect of SAMD13 expression on the proliferation and invasion of glioma cells,as well as the underlying
regulatory mechanisms. Methods:The expression and prognosis correlation of SAMD13 in glioma patients was analyzed using GEPIA
database. The expression of SAMD13 in glioma cell lines(U373,U87,and U251)was examined by RT⁃PCR and Western blot. The
SAMD13 overexpression plasmid(pIRES2⁃SAMD13)and SAMD13 shRNA plasmid(shSAMD13)were constructed and transfected
into cells. Western blot,CCK⁃8,and Transwell assays were performed to assess the effects of SAMD13 overexpression and silencing on
U373 cell proliferation and invasion,as well as to evaluate the expression and phosphorylation levels of Akt1,ERK1/2,and STAT3.
Additionally,the ERK1/2 inhibitor(U0126)was added during pIRES2⁃SAMD13 transfection to further investigate cell proliferation
and invasion via CCK⁃8 and Transwell assays. Results:AMD13 expression was significantly higher in glioma tumor tissues,compared
with adjacent normal tissues,and it was closely associated with poor prognosis in patients. SAMD13 was expressed in all three glioma
[基金项目] 国家自然科学基金(81902878);江苏省高等学校大学生创新训练计划项目(202010312039Y)
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通信作者(Corresponding author),E⁃mail:qiuwen@njmu.edu.cn;chenhuizhao@njmu.edu.cn

