4.2 Article

Prediction of New Risk Genes and Potential Drugs for Rheumatoid Arthritis from Multiomics Data

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HINDAWI LTD
DOI: 10.1155/2022/6783659

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  1. National Natural Science Foundation of China [62071099]
  2. Basic and Applied Basic Research Fund of Guangdong Province [2019A1515110701]

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This study identified 87 candidate high-confidence risk genes (HRGs) associated with rheumatoid arthritis (RA) through integrated omics data. Analysis showed that these HRGs were significantly associated with different aspects of RA. Furthermore, drug repositioning prediction revealed potential targets and drugs for RA treatment. This study provides new insights into the pathogenesis of RA and has implications for therapeutic development.
Rheumatoid arthritis (RA) is an autoimmune and inflammatory disease for which there is a lack of therapeutic options. Genome-wide association studies (GWASs) have identified over 100 genetic loci associated with RA susceptibility; however, the most causal risk genes (RGs) associated with, and molecular mechanism underlying, RA remain unknown. In this study, we collected 95 RA-associated loci from multiple GWASs and detected 87 candidate high-confidence risk genes (HRGs) from these loci via integrated multiomics data (the genome-scale chromosome conformation capture data, enhancer-promoter linkage data, and gene expression data) using the Bayesian integrative risk gene selector (iRIGS). Analysis of these HRGs indicates that these genes were indeed, markedly associated with different aspects of RA. Among these, 36 and 46 HRGs have been reported to be related to RA and autoimmunity, respectively. Meanwhile, most novel HRGs were also involved in the significantly enriched RA-related biological functions and pathways. Furthermore, drug repositioning prediction of the HRGs revealed three potential targets (ERBB2, IL6ST, and MAPK1) and nine possible drugs for RA treatment, of which two IL-6 receptor antagonists (tocilizumab and sarilumab) have been approved for RA treatment and four drugs (trastuzumab, lapatinib, masoprocol, and arsenic trioxide) have been reported to have a high potential to ameliorate RA. In summary, we believe that this study provides new clues for understanding the pathogenesis of RA and is important for research regarding the mechanisms underlying RA and the development of therapeutics for this condition.

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