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    LINC01614在结直肠癌中的表达及其生物学功能

    Expression and biological function of LINC01614 in colorectal cancer

    • 摘要: 目的 探究长链非编码RNA(lncRNA)LINC01614在结直肠癌中的表达及其生物学功能。方法 利用癌症基因组图谱(TCGA)数据库进行结直肠癌中LINC01614的表达水平分析,并探究其与患者生存预后以及临床病理特征之间的关系。通过基因本体(GO)、京都基因与基因组百科全书(KEGG)富集分析(GSEA)探究LINC01614的在结直肠癌中的功能和参与的调控通路。通过CCK-8增殖实验、划痕实验和Transwell实验进一步探究LINC01614下调后对结直肠癌细胞增殖、迁移和侵袭的影响。通过Western blot实验和qRT-PCR实验研究结直肠癌中LINC01614 与上皮细胞-间充质转化(EMT)的关系。结果 相比于癌旁组织,LINC01614在结直肠癌组织中的表达显著升高(P<0.05),并且LINC01614高表达患者生存率显著低于低表达患者(P<0.05)。LINC01614与结直肠癌患者TNM分期、T分期、N分期相关(P<0.05)。LINC01614可能通过上皮细胞-间充质转化(EMT)和Kirsten大鼠肉瘤病毒癌基因同源物(KRAS)信号通路来促进癌症的恶性进展。下调LINC01614后,结直肠癌细胞的增殖、迁移和侵袭能力都明显降低。下调LINC01614的表达后,E-cadherin的表达上调,N-cadherin、Vimentin和Snail的表达均下调。结论 LINC01614在结直肠癌中高表达,且与结直肠癌患者预后与临床病理特征相关。LINC01614可以促进结直肠癌细胞的增殖、迁移和侵袭,这可能是通过影响转录因子Snail的活性来调节EMT导致的。

       

      Abstract: Objective To investigate the expression and biological function of long non-coding RNA (lncRNA) LINC01614 in colorectal cancer. Methods The expression of LINC01614 in colorectal cancer was analyzed using the TCGA database, and its relationship with patient survival prognosis and clinicopathological features was explored. The function and regulatory pathways involving LINC01614 in colorectal cancer was investigated by Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and Gene Set Enrichment Analysis (GSEA). The effect of down-regulated LINC01614 on the proliferation, migration, and invasion of colorectal cancer cells by CCK-8 assay, wound healing assay, and Transwell assay. The relationship between LINC01614 and epithelial-mesenchymal transition (EMT) in colorectal cancer was explored by Western blot and qRT-PCR. Results Compared with adjacent normal tissues, LINC01614 expression was significantly elevated in colorectal cancer tissues (P<0.05), and patients with high LINC01614 expression had significantly lower survival rates than those with low expression (P<0.05). LINC01614 was associated with TNM stage, T stage, and N stage in colorectal cancer patients (P<0.05). LINC01614 may promote cancer progression through the EMT process and the Kirsten rat sarcoma viral oncogene homolog (KRAS) signaling pathway. Downregulation of LINC01614 significantly reduced the proliferation, migration, and invasion of colorectal cancer cells. After downregulating LINC01614 expression, E-cadherin expression was upregulated, while the levels of N-cadherin, Vimentin, and Snail were downregulated. Conclusions LINC01614 is highly expressed in colorectal cancer and associated with patient prognosis and clinicopathological features. LINC01614 promotes the proliferation, migration, and invasion of colorectal cancer cells, potentially by regulating the EMT process through affecting the activity of transcription factor Snail.

       

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