Role of Nuclear Receptor Subfamily 1 Group D Member 1 in the Proliferation, Migration of Vascular Smooth Muscle Cell, and Vascular Intimal Hyperplasia.

Abstract

ABSTRACT:

Excessive proliferation and migration of vascular smooth muscle cells (VSMCs) cause neointimal hyperplasia after percutaneous vascular interventions. Nuclear receptor subfamily 1 group D member 1 (NR1D1), a crucial member of circadian clock, is involved in the regulation of atherosclerosis and cellular proliferation. However, whether NR1D1 affects vascular neointimal hyperplasia remains unclear. In this study, we found that activating NR1D1 reduced injury-induced vascular neointimal hyperplasia. Overexpression of NR1D1 reduced the number of Ki-67-positive VSMCs and migrated VSMCs after platelet-derived growth factor (PDGF)-BB treatment. Mechanistically, NR1D1 suppressed the phosphorylation of AKT and 2 main effectors of the mammalian target of rapamycin complex 1 (mTORC1), S6, and 4EBP1 in PDGF-BB-challenged VSMCs. Re-activation of mTORC1 by Tuberous sclerosis 1 siRNA (si Tsc1 ) and re-activation of AKT by SC-79 abolished NR1D1-mediated inhibitory effects on proliferation and migration of VSMCs. Moreover, decreased mTORC1 activity induced by NR1D1 was also reversed by SC-79. Simultaneously, Tsc1 knockdown abolished the vascular protective effects of NR1D1 in vivo. In conclusion, NR1D1 reduces vascular neointimal hyperplasia by suppressing proliferation and migration of VSMCs in an AKT/mTORC1-dependent manner.

• Authors: Mingliang Wang, Chenming Qiu, Quanrong Pan, Yongjian Yang, Dachun Yang, Xiongshan Sun
• Journal: Journal of cardiovascular pharmacology (J Cardiovasc Pharmacol) Vol. 82 Issue 3 Pg. 221-228 (09 01 2023) ISSN: 1533-4023 [Electronic] United States
• PMID: 37381169 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.

Chemical References

• Proto-Oncogene Proteins c-akt
• Becaplermin
• Mechanistic Target of Rapamycin Complex 1
• Receptors, Cytoplasmic and Nuclear

Topics

• Humans
• Hyperplasia (metabolism)
• Muscle, Smooth, Vascular (metabolism)
• Proto-Oncogene Proteins c-akt (metabolism)
• Cell Proliferation
• Becaplermin (pharmacology)
• Vascular System Injuries (pathology)
• Neointima (metabolism)
• Mechanistic Target of Rapamycin Complex 1 (metabolism)
• Receptors, Cytoplasmic and Nuclear (metabolism)
• Myocytes, Smooth Muscle (metabolism)
• Cell Movement
• Cells, Cultured