PMID- 29180262 OWN - NLM STAT- MEDLINE DCOM- 20181023 LR - 20181023 IS - 1874-1754 (Electronic) IS - 0167-5273 (Linking) VI - 257 DP - 2018 Apr 15 TI - Inhibition of HSF2 SUMOylation via MEL18 upregulates IGF-IIR and leads to hypertension-induced cardiac hypertrophy. PG - 283-290 LID - S0167-5273(17)33565-9 [pii] LID - 10.1016/j.ijcard.2017.10.102 [doi] AB - Cardiac hypertrophy is a major characteristic of early-stage hypertension-related heart failure. We have found that the insulin-like growth factor receptor II (IGF-IIR) signaling was critical for hypertensive angiotensin II-induced cardiomyocyte hypertrophy and apoptosis. Moreover, this IGF-IIR signaling was elegantly modulated by the heat shock transcription factors (HSFs) during heart failure. However, the detailed mechanism by which HSFs regulates IGF-IIR during hypertension-induced cardiac hypertrophy remains elusive. In this study, we found that heat shock transcription factor 2 (HSF2) activated IGF-IIR to induce cardiac hypertrophy for hypertension-induced heart failure. The transcriptional activity of HSF2 appeared to be primarily mediated by SUMOylation via conjugation with small ubiquitin-like modifier-1 (SUMO-1). The SUMOylation of HSF2 was severely attenuated by MEL18 (also known as polycomb group ring finger 2 or PCGF2) in the heart of spontaneously hypertensive rats (SHR). Inhibition of HSF2 SUMOylation severely induced cardiac hypertrophy via IGF-IIR-mediated signaling in hypertensive rats. Angiotensin II receptor type I blocker (ARB) treatment in spontaneously hypertensive rats restored HSF2 SUMOylation and alleviated the cardiac defects. Thus, our study uncovered a novel MEL18-SUMO-1-HSF2-IGF-IIR pathway in the heart that profoundly influences cardiac hypertrophy for hypertension-induced heart failure. CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Huang, Chih-Yang AU - Huang CY AD - Translation Research Core, China Medical University Hospital, China Medical University, Taichung, Taiwan. FAU - Kuo, Chia-Hua AU - Kuo CH AD - Department of Sports Sciences, University of Taipei, Taipei, Taiwan. FAU - Pai, Pei-Ying AU - Pai PY AD - Division of Cardiology, China Medical University Hospital, Taichung, Taiwan. FAU - Ho, Tsung-Jung AU - Ho TJ AD - School of Chinese Medicine, China Medical University, Taichung, Taiwan; Chinese Medicine Department, China Medical University Beigang Hospital, Taiwan. FAU - Lin, Yueh-Min AU - Lin YM AD - Department of Pathology, Changhua Christian Hospital, Changhua, Taiwan; Department of Medical Technology, Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli, Taiwan. FAU - Chen, Ray-Jade AU - Chen RJ AD - Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan. FAU - Tsai, Fuu-Jen AU - Tsai FJ AD - School of Chinese Medicine, China Medical University, Taichung, Taiwan. FAU - Vijaya Padma, V AU - Vijaya Padma V AD - Department of Biotechnology, Bharathiar University, Coimbatore 641 046, India. FAU - Kuo, Wei-Wen AU - Kuo WW AD - Department of Biological Science and Technology, China Medical University, Taichung, Taiwan. FAU - Huang, Chih-Yang AU - Huang CY AD - School of Chinese Medicine, China Medical University, Taichung, Taiwan; Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan; Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan. Electronic address: cyhuang@mail.cmu.edu.tw. LA - eng PT - Journal Article DEP - 20171110 PL - Netherlands TA - Int J Cardiol JT - International journal of cardiology JID - 8200291 RN - 0 (Heat-Shock Proteins) RN - 0 (Hsf2 protein, rat) RN - 0 (PCGF2 protein, human) RN - 0 (Receptor, IGF Type 2) RN - 0 (Transcription Factors) RN - 11128-99-7 (Angiotensin II) RN - EC 2.3.2.27 (Polycomb Repressive Complex 1) SB - IM MH - Angiotensin II/pharmacology/toxicity MH - Animals MH - Animals, Newborn MH - Cardiomegaly/chemically induced/*metabolism MH - Cells, Cultured MH - Dose-Response Relationship, Drug MH - Female MH - HEK293 Cells MH - Heat-Shock Proteins/antagonists & inhibitors/*metabolism MH - Humans MH - Hypertension/chemically induced/*metabolism MH - Polycomb Repressive Complex 1/*metabolism MH - Rats MH - Rats, Inbred SHR MH - Rats, Inbred WKY MH - Rats, Sprague-Dawley MH - Receptor, IGF Type 2/*biosynthesis MH - Sumoylation/drug effects/*physiology MH - Transcription Factors/antagonists & inhibitors/*metabolism MH - Up-Regulation/drug effects/physiology OTO - NOTNLM OT - ANGII OT - HSF2 OT - Hypertension OT - IGF-IIR OT - MEL18 OT - SUMOylation EDAT- 2017/11/29 06:00 MHDA- 2018/10/24 06:00 CRDT- 2017/11/29 06:00 PHST- 2017/07/28 00:00 [received] PHST- 2017/10/16 00:00 [revised] PHST- 2017/10/26 00:00 [accepted] PHST- 2017/11/29 06:00 [pubmed] PHST- 2018/10/24 06:00 [medline] PHST- 2017/11/29 06:00 [entrez] AID - S0167-5273(17)33565-9 [pii] AID - 10.1016/j.ijcard.2017.10.102 [doi] PST - ppublish SO - Int J Cardiol. 2018 Apr 15;257:283-290. doi: 10.1016/j.ijcard.2017.10.102. Epub 2017 Nov 10.