Screening and analysis of O-glycosylation-associated differential expressed genes in colorectal cancer

doi:10.3969/j.issn.1006-7795.2020.03.016

Abstract

Abstract: Objective To identify differentially expressed genes (DEGs) between normal and abnormal O-glycosylated colon cancer cells, which are regarded as directly O-glycosylation-associated genes, and to investigate their underlying mechanisms. Methods The gene expression profiles of LS174T Tn (+) cells stably transfected with Cosmc or control plasmid were subjected to one-color microarray-based gene expression profiles. After RNA hybridization, gene expression profiles were obtained, and differential and integrative analysis was performed on Wegstalt platform by gene set enrichment analysis (GESA). Gene ontology (GO) analysis, Kyoto Encyclopedia of Genes and Genomes (KEGG) tumor-related pathways analysis, R software packages, and protein-protein interaction (PPI) networks by STRING were conducted. Results A total of 1474 genes, including 502 up-regulated genes and 972 down-regulated genes, were selected as DEGs. GO analysis demonstrates that both up-regulated and down-regulated DEGs are enriched for numerous biological processes such as extracellular matrix organization and growth factor activity. DEGs are mainly enriched in several tumor-associated pathways such as phosphatidylinositol 3-kinase (PI3K) signaling pathway, transforming growth factor-β (TGF-β) signaling pathway, and Wnt signaling pathway. Conclusion This study is the first work focused on the transcriptional changes caused by O-glycosylation in colon cancer cells, which helps to uncover the molecular characteristics of O-glycosylated colorectal cancer(CRC) cells and may provide new targets for future research and therapy.

Key words: colorectal cancer, O-glycosylation, gene expression profile, differentially expressed genes, Cosmc, bioinformatics

CLC Number:

R735.3

Yao Jiannan, Gao Tianbo, Duan Ling, Liu Jian, Jiang Yuliang, An Guangyu, Ge Yang. Screening and analysis of O-glycosylation-associated differential expressed genes in colorectal cancer[J]. Journal of Capital Medical University, 2020, 41(3): 403-410.

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URL: https://journal03.magtech.org.cn/Jweb_sdykdxxb/EN/10.3969/j.issn.1006-7795.2020.03.016

https://journal03.magtech.org.cn/Jweb_sdykdxxb/EN/Y2020/V41/I3/403

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