Key result
Six fibrosis-related hub genes (PPARG, KRAS, JUN, IL10, TLR4, STAT3) were identified as potential diagnostic biomarkers for heart failure, demonstrating AUC values greater than 0.7.
Why the study?
Research on the regulatory mechanism of fibrosis-related genes in patients with heart failure is very limited.
Case-Control (n=699)
No
Effect estimate: AUC > 0.7
The identification of six fibrosis-related hub genes provides potential novel diagnostic biomarkers and therapeutic targets for heart failure.
Should not yet change HF diagnostic practice; leaves open larger prospective validation of fibrosis-related biomarker candidates.
Background: Heart failure (HF) is a complex clinical syndrome characterized by the inability to match cardiac output with metabolic needs. Research on regulatory mechanism of fibrosis-related genes in patients with HF is very limited. In order to understand the mechanism of fibrosis in the development and progression of HF, fibrosis -related hub genes in HF are screened and verified. Methods: RNA sequencing data was obtained from the Gene Expression Omnibus (GEO) cohorts to identify differentially expressed genes (DEGs). Thereafter, fibrosis-related genes were obtained from the GSEA database and that associated with HF were screened out. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways analysis was carried out to analyze the biological function of fibrosis-related DEGs. The protein-protein interaction (PPI) network of hub genes was constructed via the STRING database. Moreover, the diagnostic value of hub genes for HF was confirmed using ROC curves and expression analysis. Finally, quantitative real time PCR was used to detect the expression levels of mRNAs. Results: A total of 3, 469 DEGs were identified closely related to HF, and 1, 187 fibrosis-related DEGs were obtained and analyzed for GO and KEGG enrichment. The enrichment results of fibrosis-related DEGs were consistent with that of DEGs. A total of 10 hub genes (PPARG, KRAS, JUN, IL10, TLR4, STAT3, CXCL8, CCL2, IL6, IL1β) were selected via the PPI network. Receiver operating characteristic curve analysis was estimated in the test cohort, and 6 genes (PPARG, KRAS, JUN, IL10, TLR4, STAT3) with AUC more than 0.7 were identified as diagnosis genes. Moreover, miRNA-mRNA and TF-mRNA regulatory networks were constructed. Finally, quantitative real time PCR revealed these 6 genes may be used as the potential diagnostic biomarkers of HF. Conclusion: In this study, 10 fibrosis-related hub genes in the HF were identified and 6 of them were demonstrated as potential diagnostic biomarkers for HF.
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Tao et al. (2022) conducted a case-control in Heart failure (n=699). Fibrosis-related hub genes expression vs. Healthy controls was evaluated on Diagnostic value of hub genes for heart failure (AUC) (AUC > 0.7). Six fibrosis-related hub genes (PPARG, KRAS, JUN, IL10, TLR4, STAT3) were identified as potential diagnostic biomarkers for heart failure, demonstrating AUC values greater than 0.7.
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