PMID- 34692767 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211026 IS - 2296-889X (Print) IS - 2296-889X (Electronic) IS - 2296-889X (Linking) VI - 8 DP - 2021 TI - Folic Acid Alleviates High Glucose and Fat-Induced Pyroptosis via Inhibition of the Hippo Signal Pathway on H9C2 Cells. PG - 698698 LID - 10.3389/fmolb.2021.698698 [doi] LID - 698698 AB - Diabetic cardiomyopathy (DCM) is the leading cause of death in diabetic patients. Folic acid has a protective effect on diabetes-induced cardiomyocyte damage. The aim of this study was to explore the effects of folic acid on cardiomyocytes cultured under high glucose and fat (HGF) conditions and type 2 diabetes mellitus (T2DM) mice, and elucidate the underlying mechanisms. Bioinformatics analysis was used to identify the potential drugs through the Drug-Gene Interaction database. H9C2 cardiomyocytes were cultured with 30 mM glucose and 500 nM palmitic acid in the presence or absence of folic acid or YAP1 inhibitor (verteporfin) or YAP1 siRNA. The cell viability and lactate dehydrogenase (LDH) release were measured using specific assay kits. Pyroptosis was detected by flow cytometry. The concentrations of IL-1beta and IL-18 in the supernatants were measured by ELISA. The NLRP3, ASC and caspase-1 mRNA levels were detected by qRT-PCR and that the proteins expression of NLRP3, ASC, cleaved caspase-1 (p10), caspase-1, YAP1, p-YAP1, LATS1 and P-LATS1 were detected by Western blotting. C57BL/6 mice were fed with high fat diet (HFD) combined with streptozotocin (STZ) intraperitoneally to establish a T2DM model, folic acid or PBS treatment for 8 weeks by oral gavage, blood glucose and body weight were measured every 4 weeks, mouse heart tissue was used to detect pyroptosis and hippo signaling pathway related protein expression. We identified 427 differentially expressed genes in the cardiac tissues of high fat diet + streptozotocin mice, among the 30 most significantly DEGs, folic acid was predicted to be the most likely therapeutic drug. Folic acid alleviated HGF-induced cell damage in vitro and in vivo by decreasing activation of the Hippo pathway, as indicated by lower LDH release and increased cell viability, and decreased expression of NLRP3, ASC, cleaved caspase-1, IL-1beta, IL-18, p-YAP and p-LATS. Verteporfin or YAP1 siRNA neutralized the protective effect of folic acid by reversing YAP1-induced pyroptosis. Folic acid reduced NLRP3 inflammasome-mediated pyroptosis by down-regulating the Hippo signaling pathway, thereby effectively reducing T2DM-induced damage in H9C2 cells and animals. CI - Copyright (c) 2021 Hong, Zha, Wang, Qiao and An. FAU - Hong, Lei AU - Hong L AD - Institute of Clinical Medicine Research, Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, China. FAU - Zha, Yingjie AU - Zha Y AD - Institute of Clinical Medicine Research, Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, China. FAU - Wang, Chen AU - Wang C AD - Department of Anesthesiology, Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, China. FAU - Qiao, Shigang AU - Qiao S AD - Department of Anesthesiology, Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, China. FAU - An, Jianzhong AU - An J AD - Institute of Clinical Medicine Research, Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, China. LA - eng PT - Journal Article DEP - 20211007 PL - Switzerland TA - Front Mol Biosci JT - Frontiers in molecular biosciences JID - 101653173 PMC - PMC8529044 OTO - NOTNLM OT - diabetic cardiomyopathy OT - folic acid OT - hippo signal pathway OT - pyroptosis OT - type 2 diabetes 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- 2021/10/26 06:00 MHDA- 2021/10/26 06:01 PMCR- 2021/01/01 CRDT- 2021/10/25 06:39 PHST- 2021/04/22 00:00 [received] PHST- 2021/09/17 00:00 [accepted] PHST- 2021/10/25 06:39 [entrez] PHST- 2021/10/26 06:00 [pubmed] PHST- 2021/10/26 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 698698 [pii] AID - 10.3389/fmolb.2021.698698 [doi] PST - epublish SO - Front Mol Biosci. 2021 Oct 7;8:698698. doi: 10.3389/fmolb.2021.698698. eCollection 2021.