PMID- 37392202 OWN - NLM STAT- MEDLINE DCOM- 20230927 LR - 20240402 IS - 1432-5233 (Electronic) IS - 0940-5429 (Linking) VI - 60 IP - 11 DP - 2023 Nov TI - The CEBPA-FGF21 regulatory network may participate in the T2DM-induced skeletal muscle atrophy by regulating the autophagy-lysosomal pathway. PG - 1491-1503 LID - 10.1007/s00592-023-02131-x [doi] AB - AIMS: Recent years have witnessed an increasing research interest in the roles of transcription factor (TF)-gene regulatory network in type 2 diabetes mellitus (T2DM). Thus, we sought to characterize the mechanistic insights based on the TF-gene regulatory network in skeletal muscle atrophy in T2DM. METHODS: Differentially expressed TFs (DETFs) and mRNAs (DEmRNAs) were obtained in T2DM-related gene expression profiles (GSE12643, GSE55650, GSE166502, and GSE29221), followed by WGCNA, and GO and KEGG enrichment analyses. Next, the iRegulon plug-in unit of Cytoscape software was used to construct a TF-mRNA regulatory network. Besides, RT-qPCR and ChIP-seq were utilized to measure the expression of CEBPA and FGF21 in the skeletal muscle tissues or cells of T2DM rat models. At last, the effect of overexpression of FGF21 on the autophagy-lysosomal pathway was examined in skeletal muscle cells of T2DM rats. RESULTS: Totally, 12 DETFs and 102 DEmRNAs were found in the skeletal muscle tissues of T2DM samples. The DEmRNAs were mainly enriched in the autophagy-lysosomal pathway. CEBPA affected the skeletal muscle atrophy in T2DM by regulating 5 target genes via the autophagy-lysosomal pathway. CEBPA could target FGF21. In addition, the expression of CEBPA was elevated, while the expression of FGF21 was diminished in the skeletal muscle tissues or cells of T2DM rats. The CEBPA-FGF21 regulatory network promoted skeletal muscle atrophy in T2DM by activating the autophagy-lysosomal pathway. CONCLUSION: The CEBPA-FGF21 regulatory network may participate in the T2DM-induced skeletal muscle atrophy by regulating the autophagy-lysosomal pathway. Thus, our study provides interesting targets for prevention of skeletal muscle atrophy in T2DM. CI - (c) 2023. Springer-Verlag Italia S.r.l., part of Springer Nature. FAU - Wu, Kai AU - Wu K AD - Department of Physical Medicine and Rehabilitation, Xiangya Hospital of Central South University, No. 87, Xiang-Ya Road, Changsha, 410008, Hunan Province, China. AD - National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China. FAU - Huang, Sha AU - Huang S AD - National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China. AD - Department of Neurology, Xiangya Hospital of Central South University, Changsha, 410008, China. FAU - Zheng, Fan AU - Zheng F AD - National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China. AD - Health Management Department, Xiangya Hospital of Central South University, Changsha, 410008, China. FAU - Liu, Yuan AU - Liu Y AD - Department of Physical Medicine and Rehabilitation, Xiangya Hospital of Central South University, No. 87, Xiang-Ya Road, Changsha, 410008, Hunan Province, China. seuyuanliu@csu.edu.cn. AD - National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China. seuyuanliu@csu.edu.cn. LA - eng GR - 81702241/National Natural Science Foundation of China/ GR - 2018JJ3847/the Natural Science Foundation of Hunan Province/ GR - 2020M682597/China Postdoctoral Science Foundation/ GR - 2021JJ31129/the Natural Science Foundation of Hunan Province/ PT - Journal Article DEP - 20230701 PL - Germany TA - Acta Diabetol JT - Acta diabetologica JID - 9200299 RN - 0 (fibroblast growth factor 21) RN - 0 (RNA, Messenger) RN - 0 (Transcription Factors) SB - IM MH - Rats MH - Animals MH - *Diabetes Mellitus, Type 2/complications/genetics/metabolism MH - Muscular Atrophy/genetics/metabolism MH - Muscle, Skeletal/metabolism MH - Autophagy/genetics MH - RNA, Messenger/metabolism MH - Transcription Factors MH - Lysosomes OTO - NOTNLM OT - Autophagy-lysosomal pathway OT - CEBPA OT - FGF21 OT - Skeletal muscle atrophy OT - Transcription factor OT - Type 2 diabetes mellitus EDAT- 2023/07/01 21:07 MHDA- 2023/09/27 06:42 CRDT- 2023/07/01 11:03 PHST- 2022/11/15 00:00 [received] PHST- 2023/06/05 00:00 [accepted] PHST- 2023/09/27 06:42 [medline] PHST- 2023/07/01 21:07 [pubmed] PHST- 2023/07/01 11:03 [entrez] AID - 10.1007/s00592-023-02131-x [pii] AID - 10.1007/s00592-023-02131-x [doi] PST - ppublish SO - Acta Diabetol. 2023 Nov;60(11):1491-1503. doi: 10.1007/s00592-023-02131-x. Epub 2023 Jul 1.