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南京医科大学学报(自然科学版)                                 第44卷第12期
               ·1638 ·                    Journal of Nanjing Medical University(Natural Sciences)  2024年12月


             ·基础研究·

              超保守癌/睾丸⁃LINC01424表达影响食管鳞癌的进展



              曹 靖,肖志寒,王子辰,张同禹,卢美佑,陈 亮,许 晶                          *
              南京医科大学第一附属医院胸外科,江苏 南京                  210029




             [摘    要] 目的:探究食管鳞癌特异的超保守癌/睾丸(cancer/testis,CT)⁃LINC01424 在食管鳞癌进展中的作用。方法:利用
              TCGA(The Cancer Genome Atlas)及GTEx(Genotype⁃Tissue Expression)数据库系统筛选食管鳞癌特异的超保守CT特性的长链
              非编码 RNA(long non⁃coding RNA,lncRNA),运用核质分离实验和 cDNA 末端快速扩增技术(rapid amplification of cDNA end,
              RACE)进行LINC01424细胞定位及序列鉴定;利用118例食管鳞癌样本数据进行预后分析;下调ECA109细胞系中LINC01424,
              以及上调KYSE410细胞系中LINC01424后,通过CCK⁃8实验、平板克隆法、Transwell实验和裸鼠成瘤动物实验研究CT⁃LINC01424
              在食管鳞癌细胞中的作用;进一步应用MEM(Multi Experiment Matrix)数据库进行下游基因的探索。结果:首次鉴定出食管鳞
              癌特异的超保守 CT⁃LINC01424;临床资料分析显示,CT⁃LINC01424 与食管鳞癌较差的临床分期及预后显著相关;降低
              LINC01424的表达可以抑制食管鳞癌细胞的增殖、侵袭能力,过表达LINC01424则会导致相反结果;此外,LINC01424与着丝粒
              相关1(kinetochore associated 1,KNTC1)基因存在显著共表达关系。结论:LINC01424在食管鳞癌组织中高表达,促进食管鳞
              癌细胞增殖和侵袭,并可能通过影响KNTC1的表达发挥其促癌作用。
             [关键词] 食管鳞癌;癌/睾丸基因;超保守;长链非编码RNA
             [中图分类号] R735.1                   [文献标志码] A                      [文章编号] 1007⁃4368(2024)12⁃1638⁃11
              doi:10.7655/NYDXBNSN240400


              Effects of ultra ⁃ conserved cancer/testis ⁃ LINC01424 on the progression of esophageal
              squamous cell carcinoma

              CAO Jing,XIAO Zhihan,WANG Zichen,ZHANG Tongyu,LU Meiyou,CHEN Liang,XU Jing    *
              Department of Thoracic Surgery,the First Affiliated Hospital of Nanjing Medical University,Nanjing 210029,China


             [Abstract] Objective:To investigate the role of the esophageal squamous cell carcinoma(ESCC)⁃specific ultra⁃conserved cancer/
              testis(CT)⁃ LINC01424 in ESCC progression. Methods:The TCGA(The Cancer Genome Atlas)and GTEx(Genotype ⁃ Tissue
              Expression)databases were used to screen the long non⁃coding RNA(lncRNA)with ultraconservative CT properties specific to ESCC,
              and the nucleoplasmic isolation assay and rapid amplification of cDNA end(RACE)were used for the cellular localization and
              sequence identification of LINC01424. A total of 118 cases of ESCC samples were used for the analysis of prognosis. After knocking
              down LINC01424 in ECA109 cell line or overexpressing LINC01424 in KYSE410 cell line,the effects of CT⁃LINC01424 on the ESCC
              was detected by CCK⁃8 assay,colony assay,Transwell assay,and nude micel assay;further application of MEM(Multi Experiment
              Matrix)database for downstream gene exploration. Results:An ultraconservative CT⁃LINC01424 specific for ESCC was identified.
              Analysis of clinical data showed that CT ⁃ LINC01424 was significantly associated with poor clinical stage and prognosis of ESCC.
              Knockdown of the expression of LINC01424 inhibited the proliferation and invasion of ESCC cells,while overexpression of LINC01424
              resulted in the opposite result. Furthermore,the expression of LINC01424 was significantly co⁃expressed with kinetochore associated 1
             (KNTC1)gene. Conclusion:LINC01424 is highly expressed in ESCC tissues,promotes the proliferation and invasion of ESCC cells,
              and may exert its pro⁃carcinogenic effects by affecting the expression of KNTC1.
             [Key words] esophageal squamous cell carcinoma;cancer/testis gene;ultra⁃conserved;long non⁃coding RNA
                                                                          [J Nanjing Med Univ,2024,44(12):1638⁃1648]


             [基金项目] 南京医科大学部省共建肿瘤个体化医学协同创新中心⁃恒瑞医药临床研究基金青年项目(2024-02);南京医科大
              学第一附属医院“临床能力提升工程”面上项目
              ∗
              通信作者(Corresponding author),E⁃mail:jingxu@njmu.edu.cn
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