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Zhao H, Liu P, Zha X, Zhang S, Cao J, Wei H, Wang M, Huang H, Wang W. Integrin ligands block mechanical signal transduction in baroreceptors. Life Sci Alliance 2023; 6:6/3/e202201785. [PMID: 36625204 PMCID: PMC9768909 DOI: 10.26508/lsa.202201785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/02/2022] [Accepted: 12/08/2022] [Indexed: 01/11/2023] Open
Abstract
Baroreceptors are nerve endings located in the adventitia of the carotid sinus and aortic arch. They act as a mechanoelectrical transducer that can sense the tension stimulation exerted on the blood vessel wall by the rise in blood pressure and transduce the mechanical force into discharge of the nerve endings. However, the molecular identity of mechanical signal transduction from the vessel wall to the baroreceptor is not clear. We discovered that exogenous integrin ligands, such as RGD, IKVAV, YIGSR, PHSRN, and KNEED, could restrain pressure-dependent discharge of the aortic nerve in a dose-dependent and reversible manner. Perfusion of RGD at the baroreceptor site in vivo can block the baroreceptor reflex. An immunohistochemistry study showed the binding of exogenous RGD to the nerve endings under the adventitia of the rat aortic arch, which may competitively block the binding of integrins to ligand motifs in extracellular matrix. These findings suggest that connection of integrins with extracellular matrix plays an important role in the mechanical coupling process between vessel walls and arterial baroreceptors.
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Affiliation(s)
- Haiyan Zhao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Yanjing Medical College, Capital Medical University, Beijing, China.,Beijing Lab for Cardiovascular Precision Medicine, Beijing, China
| | - Ping Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Beijing Lab for Cardiovascular Precision Medicine, Beijing, China
| | - Xu Zha
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Sitao Zhang
- Department of Orthopedics, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jiaqi Cao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Hua Wei
- Medical Experiment and Test Center, Capital Medical University, Beijing, China
| | - Meili Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Beijing Lab for Cardiovascular Precision Medicine, Beijing, China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Haixia Huang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China .,Beijing Lab for Cardiovascular Precision Medicine, Beijing, China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Wei Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Beijing Lab for Cardiovascular Precision Medicine, Beijing, China
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Qiao Y, Zhang Y, Qiao Z, He W, Chen Y, Song D, Wang G, Guo N, Shao L, Tian Z, Wang Q, Yan L, Qian H. Discovery of (S)–N-(3-isopropylphenyl)-2-(5-phenylthiazol-2-yl)pyrrolidine-1-carboxamide as potent and brain-penetrant TRPV1 antagonist. Eur J Med Chem 2022; 233:114191. [DOI: 10.1016/j.ejmech.2022.114191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 01/20/2022] [Accepted: 02/06/2022] [Indexed: 11/30/2022]
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