PMID- 31309546 OWN - NLM STAT- MEDLINE DCOM- 20200617 LR - 20200617 IS - 1873-3468 (Electronic) IS - 0014-5793 (Linking) VI - 593 IP - 21 DP - 2019 Nov TI - Egr-1 transcriptionally activates protein phosphatase PTP1B to facilitate hyperinsulinemia-induced insulin resistance in the liver in type 2 diabetes. PG - 3054-3063 LID - 10.1002/1873-3468.13537 [doi] AB - During the development of type 2 diabetes mellitus (T2DM), hyperinsulinemia is the earliest symptom. It is believed that long-term high insulin stimulation might facilitate insulin resistance in the liver, but the underlying mechanism remains unknown. Herein, we report that hyperinsulinemia could induce persistent early growth response gene-1 (Egr-1) activation in hepatocytes, which provides negative feedback inhibition of insulin sensitivity by inducing the expression of protein tyrosine phosphatase-1B (PTP1B). Deletion of Egr-1 in the liver remarkably decreases glucose production, thus improving systemic glucose tolerance and insulin sensitivity. Mechanistic analysis indicates that Egr-1 inhibits insulin receptor phosphorylation by directly activating PTP1B transcription in the liver. Our results reveal the molecular mechanism by which hyperinsulinemia accelerates insulin resistance in hepatocytes during the progression of T2DM. CI - (c) 2019 Federation of European Biochemical Societies. FAU - Wu, Jing AU - Wu J AD - Medical School of Nanjing University, China. AD - Model Animal Research Center, Nanjing University, China. FAU - Tao, Weiwei AU - Tao W AD - Medical School of Nanjing University, China. AD - Model Animal Research Center, Nanjing University, China. FAU - Bu, Dandan AU - Bu D AD - Medical School of Nanjing University, China. AD - Model Animal Research Center, Nanjing University, China. FAU - Zhao, Yue AU - Zhao Y AD - Medical School of Nanjing University, China. AD - Model Animal Research Center, Nanjing University, China. FAU - Zhang, Tongyu AU - Zhang T AD - Medical School of Nanjing University, China. AD - Model Animal Research Center, Nanjing University, China. FAU - Chong, Danyang AU - Chong D AD - Medical School of Nanjing University, China. AD - Model Animal Research Center, Nanjing University, China. FAU - Xue, Bin AU - Xue B AD - Core Laboratory, Sir Run Run Hospital, Nanjing Medical University, China. FAU - Xing, Zheng AU - Xing Z AD - Medical School of Nanjing University, China. AD - Model Animal Research Center, Nanjing University, China. FAU - Li, Chaojun AU - Li C AUID- ORCID: 0000-0001-9474-7321 AD - Medical School of Nanjing University, China. AD - Model Animal Research Center, Nanjing University, China. LA - eng GR - 31601153/National Natural Science Foundation of China/International GR - 530046/National Natural Science Foundation of China/International GR - 91857109/National Natural Science Foundation of China/International GR - BK20160619/Nature Science Foundation of Jiangsu Province/International GR - 201801B054/the program A/B for Outstanding PhD candidate of Nanjing University/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190802 PL - England TA - FEBS Lett JT - FEBS letters JID - 0155157 RN - 0 (Early Growth Response Protein 1) RN - 0 (Egr1 protein, mouse) RN - 0 (Insulin) RN - 9005-79-2 (Glycogen) RN - EC 2.7.10.1 (Receptor, Insulin) RN - EC 3.1.3.48 (Protein Tyrosine Phosphatase, Non-Receptor Type 1) RN - EC 3.1.3.48 (Ptpn1 protein, mouse) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Animals MH - Cells, Cultured MH - Diabetes Mellitus, Type 2/*genetics/metabolism MH - Disease Models, Animal MH - Early Growth Response Protein 1/*genetics/*metabolism MH - Gene Knockout Techniques MH - Glucose/metabolism MH - Glycogen/metabolism MH - Hyperinsulinism/*genetics/metabolism MH - Insulin/metabolism MH - Insulin Resistance MH - Liver/cytology/*metabolism MH - Male MH - Mice MH - Phosphorylation MH - Protein Tyrosine Phosphatase, Non-Receptor Type 1/*genetics MH - Receptor, Insulin/metabolism MH - Transcriptional Activation OTO - NOTNLM OT - PTP1B OT - Egr-1 OT - hyperinsulinemia OT - insulin resistance OT - insulin signaling OT - liver EDAT- 2019/07/17 06:00 MHDA- 2020/06/18 06:00 CRDT- 2019/07/17 06:00 PHST- 2019/05/09 00:00 [received] PHST- 2019/06/26 00:00 [revised] PHST- 2019/07/04 00:00 [accepted] PHST- 2019/07/17 06:00 [pubmed] PHST- 2020/06/18 06:00 [medline] PHST- 2019/07/17 06:00 [entrez] AID - 10.1002/1873-3468.13537 [doi] PST - ppublish SO - FEBS Lett. 2019 Nov;593(21):3054-3063. doi: 10.1002/1873-3468.13537. Epub 2019 Aug 2.