PMID- 32831068 OWN - NLM STAT- MEDLINE DCOM- 20210510 LR - 20210510 IS - 1755-8794 (Electronic) IS - 1755-8794 (Linking) VI - 13 IP - 1 DP - 2020 Aug 24 TI - Unraveling the molecular heterogeneity in type 2 diabetes: a potential subtype discovery followed by metabolic modeling. PG - 119 LID - 10.1186/s12920-020-00767-0 [doi] LID - 119 AB - BACKGROUND: Type 2 diabetes mellitus (T2DM) is a complex multifactorial disease with a high prevalence worldwide. Insulin resistance and impaired insulin secretion are the two major abnormalities in the pathogenesis of T2DM. Skeletal muscle is responsible for over 75% of the glucose uptake and plays a critical role in T2DM. Here, we sought to provide a better understanding of the abnormalities in this tissue. METHODS: The muscle gene expression patterns were explored in healthy and newly diagnosed T2DM individuals using supervised and unsupervised classification approaches. Moreover, the potential of subtyping T2DM patients was evaluated based on the gene expression patterns. RESULTS: A machine-learning technique was applied to identify a set of genes whose expression patterns could discriminate diabetic subjects from healthy ones. A gene set comprising of 26 genes was found that was able to distinguish healthy from diabetic individuals with 94% accuracy. In addition, three distinct clusters of diabetic patients with different dysregulated genes and metabolic pathways were identified. CONCLUSIONS: This study indicates that T2DM is triggered by different cellular/molecular mechanisms, and it can be categorized into different subtypes. Subtyping of T2DM patients in combination with their real clinical profiles will provide a better understanding of the abnormalities in each group and more effective therapeutic approaches in the future. FAU - Khoshnejat, Maryam AU - Khoshnejat M AD - Laboratory of Complex Biological Systems and Bioinformatics (CBB), Department of Bioinformatics, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran. AD - The UNESCO Chair on Interdisciplinary Research in Diabetes, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran. FAU - Kavousi, Kaveh AU - Kavousi K AUID- ORCID: 0000-0002-1906-3912 AD - Laboratory of Complex Biological Systems and Bioinformatics (CBB), Department of Bioinformatics, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran. kkavousi@ut.ac.ir. AD - The UNESCO Chair on Interdisciplinary Research in Diabetes, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran. kkavousi@ut.ac.ir. FAU - Banaei-Moghaddam, Ali Mohammad AU - Banaei-Moghaddam AM AD - The UNESCO Chair on Interdisciplinary Research in Diabetes, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran. AD - Laboratory of Genomics and Epigenomics (LGE), Department of Biochemistry, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran. FAU - Moosavi-Movahedi, Ali Akbar AU - Moosavi-Movahedi AA AD - The UNESCO Chair on Interdisciplinary Research in Diabetes, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran. AD - Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200824 PL - England TA - BMC Med Genomics JT - BMC medical genomics JID - 101319628 RN - 0 (Biomarkers) RN - 0 (Insulin) SB - IM MH - Biomarkers/*analysis MH - Case-Control Studies MH - Diabetes Mellitus, Type 2/classification/genetics/metabolism/*pathology MH - *Gene Expression Regulation MH - Humans MH - Insulin/*metabolism MH - *Metabolic Networks and Pathways MH - Signal Transduction MH - *Transcriptome PMC - PMC7444195 OTO - NOTNLM OT - Classification OT - Clustering OT - Flux variability analysis OT - Insulin resistance OT - Metabolic modeling OT - Muscle OT - Subtype OT - Type 2 diabetes COIS- The authors declare that they have no competing interest. EDAT- 2020/08/25 06:00 MHDA- 2021/05/11 06:00 PMCR- 2020/08/24 CRDT- 2020/08/25 06:00 PHST- 2019/12/18 00:00 [received] PHST- 2020/08/12 00:00 [accepted] PHST- 2020/08/25 06:00 [entrez] PHST- 2020/08/25 06:00 [pubmed] PHST- 2021/05/11 06:00 [medline] PHST- 2020/08/24 00:00 [pmc-release] AID - 10.1186/s12920-020-00767-0 [pii] AID - 767 [pii] AID - 10.1186/s12920-020-00767-0 [doi] PST - epublish SO - BMC Med Genomics. 2020 Aug 24;13(1):119. doi: 10.1186/s12920-020-00767-0.