PMID- 37681454 OWN - NLM STAT- MEDLINE DCOM- 20230911 LR - 20230922 IS - 1791-3004 (Electronic) IS - 1791-2997 (Print) IS - 1791-2997 (Linking) VI - 28 IP - 4 DP - 2023 Oct TI - Vascular endothelial growth factor B regulates insulin secretion in beta cells of type 2 diabetes mellitus mice via PLCgamma and the IP3R‑evoked Ca2(+)/CaMK2 signaling pathway. LID - 197 [pii] LID - 10.3892/mmr.2023.13084 [doi] AB - Vascular endothelial growth factor B (VEGFB) plays a crucial role in glucolipid metabolism and is highly associated with type 2 diabetes mellitus (T2DM). The role of VEGFB in the insulin secretion of beta cells remains unverified. Thus, the present study aimed to discuss the effect of VEGFB on regulating insulin secretion in T2DM development, and its underlying mechanism. A high‑fat diet and streptozocin (STZ) were used for inducing T2DM in mice model, and VEGFB gene in islet cells of T2DM mice was knocked out by CRISPR Cas9 and overexpressed by adeno‑Associated Virus (AAV) injection. The effect of VEGFB and its underlying mechanism was assessed by light microscopy, electron microscopy and fluorescence confocal microscopy, enzyme‑linked immunosorbent assay, mass spectrometer and western blot analysis. The decrement of insulin secretion in islet beta cell of T2DM mice were aggravated and blood glucose remained at a high level after VEGFB knockout (KO). However, glucose tolerance and insulin sensitivity of T2DM mice were improved after the AAV‑VEGFB(186) injection. VEGFB KO or overexpression can inhibit or activate PLCgamma/IP3R in a VEGFR1‑dependent manner. Then, the change of PLCgamma/IP3R caused by VEGFB/VEGFR1 will alter the expression of key factors on the Ca2(+)/CaMK2 signaling pathway such as PPP3CA. Moreover, VEGFB can cause altered insulin secretion by changing the calcium concentration in beta cells of T2DM mice. These findings indicated that VEGFB activated the Ca2(+)/CaMK2 pathway via VEGFR1‑PLCgamma and IP3R pathway to regulate insulin secretion, which provides new insight into the regulatory mechanism of abnormal insulin secretion in T2DM. FAU - Li, Yuqi AU - Li Y AD - Department of Pathophysiology, School of Basic Medicine of Binzhou Medical University, Yantai, Shandong 264000, P.R. China. FAU - Li, Rongrong AU - Li R AD - Department of Pathophysiology, School of Basic Medicine of Binzhou Medical University, Yantai, Shandong 264000, P.R. China. FAU - Luo, Xu AU - Luo X AD - Department of Pathophysiology, School of Basic Medicine of Binzhou Medical University, Yantai, Shandong 264000, P.R. China. FAU - Xu, Fang AU - Xu F AD - Department of Pathophysiology, School of Basic Medicine of Binzhou Medical University, Yantai, Shandong 264000, P.R. China. FAU - Yang, Meizi AU - Yang M AD - Department of Pharmacology, School of Basic Medicine of Binzhou Medical University, Yantai, Shandong 264000, P.R. China. FAU - Zheng, Lanhui AU - Zheng L AD - The First School of Clinical Medicine, Binzhou Medical University, Yantai, Shandong 264000, P.R. China. FAU - Wu, Qihao AU - Wu Q AD - The First School of Clinical Medicine, Binzhou Medical University, Yantai, Shandong 264000, P.R. China. FAU - Jiang, Wenguo AU - Jiang W AD - Department of Pharmacy, Binzhou Medical University, Yantai, Shandong 264000, P.R. China. FAU - Li, Yana AU - Li Y AD - Department of Pathophysiology, School of Basic Medicine of Binzhou Medical University, Yantai, Shandong 264000, P.R. China. LA - eng PT - Journal Article DEP - 20230908 PL - Greece TA - Mol Med Rep JT - Molecular medicine reports JID - 101475259 RN - 0 (Vascular Endothelial Growth Factor B) SB - IM MH - Animals MH - Mice MH - Insulin Secretion MH - *Diabetes Mellitus, Type 2 MH - Vascular Endothelial Growth Factor B MH - *Insulin-Secreting Cells MH - Signal Transduction MH - *Craniocerebral Trauma MH - Dependovirus/genetics PMC - PMC10510031 OTO - NOTNLM OT - Ca2+/CaMK2 OT - PLCgamma/IP3R OT - VEGFB OT - insulin secretion OT - type 2 diabetes mellitus OT - beta cell COIS- The authors declare that they have no competing interests. EDAT- 2023/09/08 12:42 MHDA- 2023/09/11 06:43 PMCR- 2023/09/05 CRDT- 2023/09/08 06:41 PHST- 2023/03/01 00:00 [received] PHST- 2023/08/09 00:00 [accepted] PHST- 2023/09/11 06:43 [medline] PHST- 2023/09/08 12:42 [pubmed] PHST- 2023/09/08 06:41 [entrez] PHST- 2023/09/05 00:00 [pmc-release] AID - 197 [pii] AID - MMR-28-4-13084 [pii] AID - 10.3892/mmr.2023.13084 [doi] PST - ppublish SO - Mol Med Rep. 2023 Oct;28(4):197. doi: 10.3892/mmr.2023.13084. Epub 2023 Sep 8.