PMID- 37302637 OWN - NLM STAT- MEDLINE DCOM- 20230619 LR - 20230619 IS - 1879-0003 (Electronic) IS - 0141-8130 (Linking) VI - 243 DP - 2023 Jul 15 TI - Identification of natural product inhibitors of PTP1B based on high-throughput virtual screening strategy: In silico, in vitro and in vivo studies. PG - 125292 LID - S0141-8130(23)02186-4 [pii] LID - 10.1016/j.ijbiomac.2023.125292 [doi] AB - Protein tyrosine phosphatase 1B (PTP1B) is a key negative regulator of the insulin signaling pathway, which is a potential therapeutic target for the treatment of type 2 diabetes mellitus (T2DM). In this study, we identified several PTP1B inhibitors with high activity by using high-throughput virtual screening and in vitro enzyme inhibition activity verification strategies. Among them, baicalin was first reported as a selective mixed inhibitor of PTP1B, with IC(50) value of 3.87 +/- 0.45 muM, and its inhibitory activity against homologous proteins TCPTP, SHP2, and SHP1 exceeded 50 muM. Molecular docking study found that baicalin and PTP1B could bind stably, and revealed that baicalin had a dual inhibitory effect. Cell experiments showed that baicalin was almost non-toxic and could significantly enhance the phosphorylation of IRS-1 in C2C12 myotube cells. Animal experiments showed that baicalin could significantly reduce the blood sugar of STZ-induced diabetic mice models, and had a liver protective effect. In conclusion, this study can provide new ideas for the development of PTP1B selective inhibitors. CI - Copyright (c) 2023. Published by Elsevier B.V. FAU - Zhao, Ji-Feng AU - Zhao JF AD - Shandong Key Laboratory of Medicine and Health (Clinical Applied Pharmacology), Department of Pharmacy, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China. FAU - Li, Li-Hua AU - Li LH AD - Eye Center, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China. FAU - Guo, Xiao-Jing AU - Guo XJ AD - Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China. FAU - Zhang, Hai-Xia AU - Zhang HX AD - Shandong Key Laboratory of Medicine and Health (Clinical Applied Pharmacology), Department of Pharmacy, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China. FAU - Tang, Lin-Lin AU - Tang LL AD - Shandong Key Laboratory of Medicine and Health (Clinical Applied Pharmacology), Department of Pharmacy, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China. FAU - Ding, Chuan-Hua AU - Ding CH AD - Shandong Key Laboratory of Medicine and Health (Clinical Applied Pharmacology), Department of Pharmacy, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China. Electronic address: dchh422@163.com. FAU - Liu, Wen-Shan AU - Liu WS AD - Shandong Key Laboratory of Medicine and Health (Clinical Applied Pharmacology), Department of Pharmacy, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China. Electronic address: liuwenshan@wfmc.edu.cn. LA - eng PT - Journal Article DEP - 20230609 PL - Netherlands TA - Int J Biol Macromol JT - International journal of biological macromolecules JID - 7909578 RN - EC 3.1.3.2 (Phosphoric Monoester Hydrolases) RN - 0 (Insulin) RN - EC 3.1.3.48 (Protein Tyrosine Phosphatase, Non-Receptor Type 1) RN - 0 (Enzyme Inhibitors) SB - IM MH - Animals MH - Mice MH - *Diabetes Mellitus, Type 2/drug therapy MH - Molecular Docking Simulation MH - Phosphoric Monoester Hydrolases MH - *Diabetes Mellitus, Experimental/drug therapy MH - Insulin/metabolism MH - Protein Tyrosine Phosphatase, Non-Receptor Type 1 MH - Enzyme Inhibitors/metabolism OTO - NOTNLM OT - Activity OT - Molecular docking OT - Natural product OT - PTP1B inhibitor OT - Selectivity COIS- Declaration of competing interest The authors report no conflicts of interest in this work. EDAT- 2023/06/12 00:42 MHDA- 2023/06/19 13:08 CRDT- 2023/06/11 19:16 PHST- 2023/03/19 00:00 [received] PHST- 2023/06/05 00:00 [revised] PHST- 2023/06/07 00:00 [accepted] PHST- 2023/06/19 13:08 [medline] PHST- 2023/06/12 00:42 [pubmed] PHST- 2023/06/11 19:16 [entrez] AID - S0141-8130(23)02186-4 [pii] AID - 10.1016/j.ijbiomac.2023.125292 [doi] PST - ppublish SO - Int J Biol Macromol. 2023 Jul 15;243:125292. doi: 10.1016/j.ijbiomac.2023.125292. Epub 2023 Jun 9.