吉林大学学报(医学版) ›› 2020, Vol. 46 ›› Issue (6): 1283-1287.doi: 10.13481/j.1671-587x.20200627

• 临床研究 • 上一篇    下一篇

circRNAs对结直肠癌的抑制作用及其生物信息学分析

李霞1,于逸2,左海维3,周凤娟4,辛勇1()   

  1. 1.徐州医科大学附属医院放疗科,江苏 徐州 221000
    2.徐州医科大学生命科学学院,江苏 徐州 221000
    3.徐州医科大学医学信息与工程学院,江苏 徐州 221000
    4.徐州医科大学第二附属医院放疗科,江苏 徐州 221000
  • 收稿日期:2020-03-26 出版日期:2020-11-28 发布日期:2021-01-27
  • 通讯作者: 辛勇 E-mail:zllx8866@163.com
  • 作者简介:李 霞(1994-),女,四川省内江市人,在读医学硕士,主要从事肿瘤发病机制和放射治疗方面的研究。
  • 基金资助:
    江苏省人社厅第十四批“六大人才高峰”高层次人才项目资助课题(WSN-121);徐州医科大学优秀人才科研启动基金资助课题(D2018018)

Inhibitory effect of circRNA on colorectal cancer and its bioinformatics analysis

Xia LI1,Yi YU2,Haiwei ZUO3,Fengjuan ZHOU4,Yong XIN1()   

  1. 1.Department of Radiotherapy,Affiliated Hospital,Xuzhou Medical University,Xuzhou 221000,China
    2.School of Life Science,Xuzhou Medical University,Xuzhou 221000,China
    3.School of Medical Information and Engineering,Xuzhou Medical University,Xuzhou 221000,China
    4.Department of Radiotherapy,Second Affiliated Hospital,Xuzhou Medical University,Xuzhou 221000,China
  • Received:2020-03-26 Online:2020-11-28 Published:2021-01-27
  • Contact: Yong XIN E-mail:zllx8866@163.com

摘要: 目的

探讨结直肠癌组织与癌旁组织的差异表达circRNAs,阐明hsa_circ_0043278对结直肠癌抑制作用的潜在机制。

方法

从GEO数据库下载数据, GSE126094芯片数据包含10例结直肠癌组织样本与10例癌旁组织样本。采用R软件筛选出差异表达circRNAs;在CSCD数据库中找到与差异表达circRNAs结合的miRNAs;采用Perl软件预测miRNAs的靶基因;对靶基因进行GO生物学功能富集分析与KEGG信号通路富集分析。

结果

与癌旁组织样本比较,结直肠癌组织样本中表达水平升高的circRNAs有23个(logFC>2且P<0.05),表达水平降低的circRNAs有36个(logFC<-2且P<0.05)。hsa_circ_0043278表达水平降低最明显(logFC=-7.481且P<0.05)。共有66个miRNAs与hsa_circ_0043278结合,并预测其靶基因。GO富集分析,靶基因主要参与Wnt介导的细胞信号转导。KEGG富集分析,靶基因主要富集在PI3K-AKT信号通路。

结论

hsa_circ_0043278表达水平在结直肠癌组织样本中明显降低,间接影响靶基因UTP18、CLIP4与STC2等的功能,进而影响其对Wnt介导的细胞信号转导与PI3K-AKT信号通路的调控作用,最终减弱其对结直肠癌的抑制作用。

关键词: 结直肠肿瘤, circRNA, miRNA, 基因表达数据, GEO数据库, 靶基因

Abstract: Objective

To investigate the differentially expressed circRNAs in the colorectal cancer tissue and adjacent cancer tissue, and to elucidate the potential mechanism of inhibitory effect of hsa_circ_0043278 on colorectal cancer.

Methods

The data were downloaded from the GEO database and the GSE126094 chip data contained 10 samples of colorectal cancer tissues and 10 samples of adjacent cancer tissues. R software was used to select the differentially expressed circRNAs; the miRNAs that bound to differentially expressed circRNAs were found in the CSCD database;Perl software was used to predict the target genes of the miRNAs; GO biological function enrichment analysis and KEGG pathway enrichment analysis were performed in the target genes.

Results

Compared with adjacent cancer tissue samples,there were 23 circRNAs with increasing expression levels (logFC>2 and P<0.05) and 36 circRNAs with decreasing expression levels (logFC<-2 and P<0.05) in the colorectal cancer tissue samples. The expression level of hsa_circ_0043278 was decreased significantly(logFC=-7.481 and P<0.05). There were 66 miRNAs combined with hsa_circ_0043278,and the target genes were predicted. The GO enrichment analysis results showed that the target genes were mainly involved in Wnt-mediated cell signal transduction;the KEGG pathway enrichment analysis results showed that the target genes mainly enriched in PI3K-AKT signaling pathway.

Conclusion

The expression level of hsa_circ_0043278 in the colorectal cancer tissue samples is significantly decreased, which indirectly affect the functions of target genes such as UTP18, CLIP4 and STC2, and further affect the regulation of Wnt-mediated cell signal transduction and PI3K-AKT signaling pathway, and finally reduce the inhibitory effect on the colorectal cancer.

Key words: colorectal neoplasms, circRNA, miRNA, gene expression data, GEO database, target gene

中图分类号: 

  • R735.35