PMID- 34368236 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210810 IS - 2296-889X (Print) IS - 2296-889X (Electronic) IS - 2296-889X (Linking) VI - 8 DP - 2021 TI - LncRNA ENSMUST00000155383 is Involved in the Improvement of DPP-4 Inhibitor MK-626 on Vascular Endothelial Function by Modulating Cacna1c-Mediated Ca(2+) Influx in Hypertensive Mice. PG - 724225 LID - 10.3389/fmolb.2021.724225 [doi] LID - 724225 AB - Objective: This study investigated the protective effects of dipeptidyl peptidase-4 inhibitor MK-626 on vascular endothelial function by regulating lncRNAs in hypertensive vasculature. Methods: Angiotensin Ⅱ (Ang Ⅱ)-loaded osmotic pumps were implanted in mice with or without MK-626 administration. GLP-1 levels in plasma were measured by ELISA. Aortic rings were suspended in myograph for tension measurement. Microarray was performed to analyze lncRNA and mRNA expression profiles. Protein expression and phosphorylation were examined by Western blot. The differentially expressed (DE)-genes were validated by qRT-PCR. The intracellular Ca(2+) concentration was detected by laser confocal system. Results: MK-626 elevated plasma GLP-1 level, increased eNOS phosphorylation, improved endothelium-dependent relaxations, and reduced systolic blood pressure in Ang Ⅱ-induced hypertensive mice. Microarray revealed the dysregulations of 723 lncRNAs and 742 mRNAs were reversed by MK-626 in hypertensive mouse aortae. qRT-PCR validation showed that 13 DE-lncRNAs and eight dysregulated mRNAs in both hypertensive mouse aortae and mouse aortic endothelial cells (MAECs) were rescued by MK-626. Among them, four mRNAs (Cacna1C, Itgav, Itga8, and Npnt) were co-expressed with lncRNA ENSMUST00000155383. Cacna1C protein expression was reduced in the ECs but was elevated in smooth muscle cells from Ang Ⅱ-infused mice, which were both reversed by MK-626. Knockdown of lncRNA ENSMUST00000155383 suppressed the increased Cacna1c protein and mRNA expression, elevated Ca(2+) level, and enhanced eNOS phosphorylation induced by MK-626 in the hypertensive mouse ECs. Conclusion: The dysregulations of lncRNA ENSMUST00000155383-associated genes might play crucial roles in hypertension-induced endothelial dysfunction through affecting calcium pathway. MK-626 might ameliorate endothelial dysfunction by upregulating lncRNA ENSMUST00000155383, enhancing Ca(2+) concentration, and subsequently restoring eNOS activity in hypertension. CI - Copyright (c) 2021 Zhang, Tan, Zong, Li, Zhang, Liu, Wang, Han and Liu. FAU - Zhang, Yi AU - Zhang Y AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. FAU - Tan, Na AU - Tan N AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. FAU - Zong, Yi AU - Zong Y AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. FAU - Li, Li AU - Li L AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. AD - Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China. FAU - Zhang, Yan AU - Zhang Y AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. AD - Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China. FAU - Liu, Jian AU - Liu J AD - Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China. FAU - Wang, Xiaorui AU - Wang X AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. FAU - Han, Wenwen AU - Han W AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. FAU - Liu, Limei AU - Liu L AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. AD - Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China. LA - eng PT - Journal Article DEP - 20210723 PL - Switzerland TA - Front Mol Biosci JT - Frontiers in molecular biosciences JID - 101653173 PMC - PMC8343177 OTO - NOTNLM OT - calcium OT - endothelial function OT - glucagon-like peptide-1 OT - hypertension OT - long noncoding RNA COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/08/10 06:00 MHDA- 2021/08/10 06:01 PMCR- 2021/01/01 CRDT- 2021/08/09 06:42 PHST- 2021/06/12 00:00 [received] PHST- 2021/07/14 00:00 [accepted] PHST- 2021/08/09 06:42 [entrez] PHST- 2021/08/10 06:00 [pubmed] PHST- 2021/08/10 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 724225 [pii] AID - 10.3389/fmolb.2021.724225 [doi] PST - epublish SO - Front Mol Biosci. 2021 Jul 23;8:724225. doi: 10.3389/fmolb.2021.724225. eCollection 2021.