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山东大学学报 (医学版) ›› 2020, Vol. 1 ›› Issue (7): 38-46.doi: 10.6040/j.issn.1671-7554.0.2020.0557

• 临床医学 • 上一篇    下一篇

长链非编码RNA AL109955.1在80例结直肠癌组织中的表达及对细胞增殖与迁移侵袭的影响

李宁1,2,李娟1,2,谢艳1,2,李培龙1,2,王允山1,2,杜鲁涛1,2,王传新1,2   

  1. 1.山东大学第二医院检验医学中心, 山东 济南 250033;2.山东省肿瘤标志物检测工程实验室, 山东 济南 250033
  • 出版日期:2020-07-20 发布日期:2020-07-10
  • 通讯作者: 王传新. E-mail:cxwang@sdu.edu.cn
  • 基金资助:
    国家自然科学基金(81772271);山东省重大科技创新工程项目(2018YFJH0505);山东大学基本科研专项资金资助(2018JC002)

Expression of LncRNA AL109955.1 in 80 cases of colorectal cancer and its effect on cell proliferation, migration and invasion

LI Ning1,2, LI Juan1,2, XIE Yan1,2, LI Peilong1,2, WANG Yunshan1,2, DU Lutao1,2, WANG Chuanxin1,2   

  1. 1. Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250033, Shandong, China;
    2. Tumor Marker Detection Engineering Laboratory of Shandong Province, Jinan 250033, Shandong, China
  • Online:2020-07-20 Published:2020-07-10

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摘要： 目的 探讨长链非编码RNAs(LncRNAs)AL109955.1在结直肠癌(CRC)组织中的表达水平及其对CRC细胞增殖和迁移侵袭的影响。 方法 对癌症和肿瘤基因图谱(TCGA)中的CRC数据和基因型组织表达数据库(GTEx)中正常组织数据合并分析,筛选在CRC组织中低表达且与患者不良预后相关的LncRNAs,并通过实时荧光定量PCR(RT-qPCR)的方法在80例经病理学确诊的CRC组织及癌旁正常组织中验证其表达。采用细胞增殖检测试剂盒(CCK8)检测细胞增殖能力,以划痕实验和Transwell实验检测细胞迁移和侵袭能力。同时利用网页分析工具TargetScan和Tarbase,对下游miRNAs及其靶基因进行筛选和功能富集分析,使用cytoscape(3.7.2)软件构建LncRNA-miRNAs-mRNA的ceRNA调控网络。 结果 研究发现了一种新的LncRNA AL109955.1,其在CRC组织中的表达水平(1.18±2.46)较癌旁正常组织(1.81±1.65)明显降低(t=2.142,P=0.008)。进一步分析结果显示,AL109955.1的表达水平在不同分化程度的肿瘤组织中有差异［低分化:0.18(0.10~0.55)、中分化:0.49(0.22~1.81)、高分化:0.87(0.15~3.33)］;此外,随着肿瘤瘤体的增加,AL109955.1的表达水平逐渐降低［≥5 cm:0.26(0.11~0.62)、<5 cm:0.49(0.181~1.99)］,且差异具有统计学意义(U=570.5,P=0.020)。CCK8实验结果显示,AL109955.1能够显著抑制CRC细胞的增殖能力。划痕实验与Transwell实验结果则显示过表达AL109955.1后,细胞的迁移与侵袭能力明显下降。基因功能注释和基因通路富集分析显示AL109955.1可能通过影响Wnt、p53、Notch以及Jak-STAT等肿瘤经典信号通路从而发挥其生物学作用。 结论 LncRNA AL109955.1在CRC组织中的表达水平低于癌旁正常组织,并可抑制CRC细胞的增殖、迁移和侵袭。

关键词: 结直肠癌, 非编码RNA, 增殖, 迁移, 侵袭

Abstract: Objective To investigate the expression of long non-codingRNAs(LncRNAs)AL109955.1 in colorectal cancer(CRC)tissues and its effect on cell proliferation, migration and invasion. Methods The cancer genome atlas(TCGA)and genotype-tissue expression(GTEx)were analyzed to screen LncRNAs which were decreased in CRC tissues and related to the poor prognosis of patients, and then the expression in 80 pairs of CRC tissues and adjacent normal tissues was verified by quantitative real-time PCR(RT-qPCR). After that, the cell proliferation, migration and invasion were detected with cell counting kit-8(CCK8)test, wound healing test and Transwell assay, respectively. Finally, the miRNA binding sites and target mRNAs were screened with TargetScan and Tarbase, and a LncRNA-miRNAs-mRNA network was constructed with Cytoscape software(3.7.2). Results A novel LncRNA, AL109955.1, was screened and identified, and its expression was significantly lower in CRC tissues than that in adjacent normal tissues ［(1.18±2.46)vs(1.8±1.65), t=2.14, P=0.008］. AL109955.1 expressed differently in CRC tissues with different degrees of differentiation ［poorly differentiated: 0.18(0.10~0.55); moderately differentiated: 0.49(0.22~1.81); well differentiated: 0.87(0.15~3.33)］. In addition, AL109955.1 expression decreased with the increase of tumor size ［≥5 cm: 0.26(0.11~0.62); <5 cm: 0.49(0.181~1.99), U=570.5, P=0.020)］. CCK8 test showed AL109955.1 could significantly inhibit the proliferation of CRC cells. Wound healing test and Transwell assay showed overexpression of AL109955.1 significantly decreased the migration and invasion of CRC cells. Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)analysis indicated that AL109955.1 played its biological role by affecting classical tumor signaling pathways such as Wnt, p53, Notch and Jak-STAT. Conclusion LncRNA AL109955.1 expression is lower in CRC tissues than that in adjacent normal tissues. LncRNA AL109955.1 can inhibit the proliferation, migration and invasion abilities of CRC cells.

Key words: Colorectal cancer, Non-coding RNA, Proliferation, Migration, Invasion

中图分类号: 

  • R737.9
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