PMID- 28024939 OWN - NLM STAT- MEDLINE DCOM- 20181126 LR - 20181126 IS - 0925-4439 (Print) IS - 0925-4439 (Linking) VI - 1863 IP - 3 DP - 2017 Mar TI - RAGE deficiency alleviates aortic valve calcification in ApoE(-/-) mice via the inhibition of endoplasmic reticulum stress. PG - 781-792 LID - S0925-4439(16)30349-0 [pii] LID - 10.1016/j.bbadis.2016.12.012 [doi] AB - Receptor for advanced glycation end products (RAGE) and endoplasmic reticulum (ER) stress have been shown to be involved in calcific aortic valve disease (CAVD). However, the association between RAGE and ER stress remains unknown in the pathogenesis of CAVD. The current study aims to test the hypothesis that RAGE deficiency alleviates aortic valve calcification via the inhibition of ER stress. Up-regulation of RAGE and ER stress markers in calcified human aortic valves were confirmed by immunoblotting. Aortic valve calcification was evaluated in atherosclerotic prone ApoE(-/-) mice or in mice with dual deficiencies of ApoE and RAGE (ApoE(-/-)RAGE(-/-)) fed with high cholesterol diet for 24weeks. Echocardiography and histological examination show that genetic deficiency of RAGE attenuates aortic valve calcification in ApoE(-/-) mice. Meanwhile, RAGE deficiency inhibited the osteogenic signaling and ER stress activation as well as suppressed macrophage infiltration in vivo. Cultured human aortic valve interstitial cells (AVICs) were treated with high molecular group box 1 protein (HMGB1) as in vitro model. We found that HMGB1 induced osteoblastic differentiation and calcification through RAGE/ER stress. Furthermore, Sox9 up-regulation and intranuclear translocation mediated the pro-osteogenic effect of HMGB1 on AVICs. RAGE or ER stress knockdown reduced the up-regulation of monocyte chemoattractant protein-1 (MCP-1) and tumor necrosis factor-alpha (TNF-alpha) in human AVICs exposed to HMGB1.These novel findings demonstrate that RAGE deficiency protects against aortic valve calcification in high cholesterol diet-fed ApoE(-/-) mice via inhibition of ER stress. HMGB1 induces AVIC osteoblastic differentiation and calcification through RAGE/ER stress/Sox9 pathway. CI - Copyright (c) 2016. Published by Elsevier B.V. FAU - Wang, Bo AU - Wang B AD - Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China. FAU - Cai, Zhejun AU - Cai Z AD - Department of Cardiology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, China. FAU - Liu, Baoqing AU - Liu B AD - Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China. FAU - Liu, Zongtao AU - Liu Z AD - Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China. FAU - Zhou, Xianming AU - Zhou X AD - Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China. FAU - Dong, Nianguo AU - Dong N AD - Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China. Electronic address: dongnianguo@hotmail.com. FAU - Li, Fei AU - Li F AD - Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China. Electronic address: lifei_union@sina.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20161224 PL - Netherlands TA - Biochim Biophys Acta Mol Basis Dis JT - Biochimica et biophysica acta. Molecular basis of disease JID - 101731730 RN - 0 (Apolipoproteins E) RN - 0 (Receptor for Advanced Glycation End Products) RN - 97C5T2UQ7J (Cholesterol) RN - Aortic Valve, Calcification of SB - IM MH - Animals MH - Aortic Valve/metabolism/*pathology MH - Aortic Valve Stenosis/*genetics/metabolism/*pathology MH - Apolipoproteins E/*genetics/metabolism MH - Calcinosis/*genetics/metabolism/*pathology MH - Cells, Cultured MH - Cholesterol/metabolism MH - *Endoplasmic Reticulum Stress MH - *Gene Deletion MH - Gene Knockdown Techniques MH - Humans MH - Mice MH - Mice, Inbred C57BL MH - Receptor for Advanced Glycation End Products/*genetics/metabolism OTO - NOTNLM OT - Aortic valve calcification OT - ER stress OT - HMGB1 OT - RAGE OT - Sox9 EDAT- 2016/12/28 06:00 MHDA- 2018/11/27 06:00 CRDT- 2016/12/28 06:00 PHST- 2016/08/11 00:00 [received] PHST- 2016/12/22 00:00 [revised] PHST- 2016/12/23 00:00 [accepted] PHST- 2016/12/28 06:00 [pubmed] PHST- 2018/11/27 06:00 [medline] PHST- 2016/12/28 06:00 [entrez] AID - S0925-4439(16)30349-0 [pii] AID - 10.1016/j.bbadis.2016.12.012 [doi] PST - ppublish SO - Biochim Biophys Acta Mol Basis Dis. 2017 Mar;1863(3):781-792. doi: 10.1016/j.bbadis.2016.12.012. Epub 2016 Dec 24.