PMID- 35187175 OWN - NLM STAT- MEDLINE DCOM- 20220331 LR - 20220501 IS - 2314-6141 (Electronic) IS - 2314-6133 (Print) VI - 2022 DP - 2022 TI - Identification of Potential Biomarkers of Type 2 Diabetes Mellitus-Related Immune Infiltration Using Weighted Gene Coexpression Network Analysis. PG - 9920744 LID - 10.1155/2022/9920744 [doi] LID - 9920744 AB - BACKGROUND: Type 2 diabetes mellitus (T2DM) is characterized by chronic low-grade inflammation, showing an increasing trend. The infiltration of immune cells into adipose tissue has been shown to be an important pathogenic cause of T2DM. The purpose of this study is to use the relevant database to identify some abnormally expressed or dysfunctional genes related to diabetes from the perspective of immune infiltration. METHODS: Weighted gene coexpression network analysis (WGCNA) was employed to systematically identify the coexpressed gene modules and hub genes associated with T2DM development based on a microarray dataset (GSE23561) from the Gene Expression Omnibus (GEO) database. The key genes in modules highly related to clinical features were calculated and screened by using R software, and their participation in T2DM was determined by gene enrichment analysis. The mRNA levels of CSF1R, H2AFV, LCK, and TLR9 in pre-T2DM mice and normal wild-type mice were detected by WGCNA screening and real-time quantitative reverse transcriptase polymerase chain reaction (qRT-PCR). RESULTS: We constructed 14 coexpressed gene modules, and the brown module was shown to be significantly related to T2DM. Through verification of the protein-protein interaction (PPI) network, four upregulated hub genes, CSF1R, H2AFV, LCK, and TLR9, were screened from the brown module and successfully distinguishedT2DM patients from healthy people. These hub genes may be used as biomarkers and important indicators for patient diagnosis. Enrichment analysis showed that these hub genes were highly associated with IL-6-related inflammatory metabolism, immune regulation, and immune cell infiltration. Finally, we verified the hub genes CSF1R, LCK, and TLR9 in a T2DM animal model and found that their mRNA levels were significantly higher in animals with T2DM than in control group mice (NC). CONCLUSIONS: In summary, our results suggest that these hub genes (CSF1R, LCK, and TLR9) can serve as biomarkers and immunotherapeutic targets for T2DM. CI - Copyright (c) 2022 Ji Zhou et al. FAU - Zhou, Ji AU - Zhou J AUID- ORCID: 0000-0003-0394-0690 AD - Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, China. FAU - Zhang, Xiaoyi AU - Zhang X AD - Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, China. FAU - Ji, Lixia AU - Ji L AUID- ORCID: 0000-0001-6917-2597 AD - Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, China. FAU - Jiang, Guohui AU - Jiang G AUID- ORCID: 0000-0001-8607-6644 AD - Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, China. LA - eng PT - Journal Article DEP - 20220209 PL - United States TA - Biomed Res Int JT - BioMed research international JID - 101600173 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (Biomarkers) RN - 0 (Csf1r protein, mouse) RN - 0 (H2az2 protein, mouse) RN - 0 (Hcls1 protein, mouse) RN - 0 (Histones) RN - 0 (Receptors, Granulocyte-Macrophage Colony-Stimulating Factor) RN - 0 (Tlr9 protein, mouse) RN - 0 (Toll-Like Receptor 9) SB - IM MH - Adaptor Proteins, Signal Transducing/genetics MH - Animals MH - Biomarkers MH - Databases, Genetic MH - Diabetes Mellitus, Type 2/*genetics/*immunology MH - Diet, High-Fat MH - *Gene Expression Profiling MH - *Gene Regulatory Networks MH - Histones/genetics MH - Mice MH - Receptors, Granulocyte-Macrophage Colony-Stimulating Factor/genetics MH - Toll-Like Receptor 9/genetics PMC - PMC8849810 COIS- The authors have no competing interests to declare. EDAT- 2022/02/22 06:00 MHDA- 2022/04/01 06:00 PMCR- 2022/02/09 CRDT- 2022/02/21 06:05 PHST- 2021/03/20 00:00 [received] PHST- 2021/11/24 00:00 [revised] PHST- 2021/12/23 00:00 [accepted] PHST- 2022/02/21 06:05 [entrez] PHST- 2022/02/22 06:00 [pubmed] PHST- 2022/04/01 06:00 [medline] PHST- 2022/02/09 00:00 [pmc-release] AID - 10.1155/2022/9920744 [doi] PST - epublish SO - Biomed Res Int. 2022 Feb 9;2022:9920744. doi: 10.1155/2022/9920744. eCollection 2022.