Journal of Jilin University(Medicine Edition) ›› 2022, Vol. 48 ›› Issue (5): 1290-1297.doi: 10.13481/j.1671-587X.20220524

• Research in clinical medicine • Previous Articles    

Bioinformatics analysis based on molecular characteristics and mechanism of cystic fibrosis

Xiaoyan WANG1,Qiuyue ZHANG2,Yujie HU2,Zhijing MO2()   

  1. 1.Department of Experimental Teaching Center,College of Biotechnology,Guilin Medical University,Guilin 541199,China
    2.Department of Biochemistry and Molecular Biology,College of Biotechnology,Guilin Medical University,Guilin 541199,China
  • Received:2021-12-01 Online:2022-09-28 Published:2022-11-15
  • Contact: Zhijing MO E-mail:mozhijing@glmc.edu.cn

Abstract:

Objective To screen the specific genes of cystic fibrosis (CF) and predict the target genes, and to study its mechanism. Methods The datasets(GSE71799,GSE24206,GSE98925 and GSE69764) including CF samples and normal samples were downloaded from the Gene Expression Omnibus(GEO)database and divided into CF group and control group. The R software limma package was used to screen the differentially expressed genes(DEGs) in CF group and control group. Gene Ontology(GO) and Kyoto Encyclopedia of Genes and Genomes(KEGG)were used to analyze the function and pathway enrichment of DEGs, Gene Set Enrichment Analysis(GSEA)was used to obtain the significantly enriched gene sets of DEGs, and STRING database was used to establish the protein-protein interaction(PPI)network. The PPI network was analyzed and visualized by Cytoscape software, and the hub genes were screened. Results A total of 429 DEGs were obtained and screened, including 105 DEGs that were overexpressed in CF group and 324 DEGs that were overexpressed in control group(|log2(FC)|>1,P<0.05). The GO enrichment analysis results showed that DEGs were mainly enriched in the neutrophil mediated immunity, chemokine activity and cell adhesion molecule binding and so on(P<0.05). The results of KEGG pathway analysis demonstrated that DEGs were mainly enriched in interleukin-17(IL-17) signaling pathway(P<0.05). The results of GSEA demonstrated that DEGs were mainly enriched in signaling pathway translation, ribosomal RNA(rRNA) processing and mitochondrial translation and so on. Through STRING database and Cytoscape software, 35 hub genes in the PPI network were screened out, including matrix metallopeptidase 9(MMP9), C-X-C motif chemokine ligand 2(CXCL2) and C-X-C motif chemokine ligand 3(CXCL3). In addition, CXCL2 and CXCL3 were associated with DNA methylation. Conclusion The disorder of neutrophil-mediated immunity-related genes and IL-17 signaling pathway-related genes may play an important role in the occurrence and development of CF. CXCL2 and CXCL3 genes may become the biomarkers for DNA methylation therapy of CF.

Key words: Cystic fibrosis, Bioinformatics, Differentially expressed genes, Hub gene, Molecular mechanism

CLC Number: 

  • R34