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Rode B, Shi J, Endesh N, Drinkhill MJ, Webster PJ, Lotteau SJ, Bailey MA, Yuldasheva NY, Ludlow MJ, Cubbon RM, Li J, Futers TS, Morley L, Gaunt HJ, Marszalek K, Viswambharan H, Cuthbertson K, Baxter PD, Foster R, Sukumar P, Weightman A, Calaghan SC, Wheatcroft SB, Kearney MT, Beech DJ. Piezo1 channels sense whole body physical activity to reset cardiovascular homeostasis and enhance performance. Nat Commun 2017; 8:350. [PMID: 28839146 PMCID: PMC5571199 DOI: 10.1038/s41467-017-00429-3] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 06/20/2017] [Indexed: 01/24/2023] Open
Abstract
Mammalian biology adapts to physical activity but the molecular mechanisms sensing the activity remain enigmatic. Recent studies have revealed how Piezo1 protein senses mechanical force to enable vascular development. Here, we address Piezo1 in adult endothelium, the major control site in physical activity. Mice without endothelial Piezo1 lack obvious phenotype but close inspection reveals a specific effect on endothelium-dependent relaxation in mesenteric resistance artery. Strikingly, the Piezo1 is required for elevated blood pressure during whole body physical activity but not blood pressure during inactivity. Piezo1 is responsible for flow-sensitive non-inactivating non-selective cationic channels which depolarize the membrane potential. As fluid flow increases, depolarization increases to activate voltage-gated Ca2+ channels in the adjacent vascular smooth muscle cells, causing vasoconstriction. Physical performance is compromised in mice which lack endothelial Piezo1 and there is weight loss after sustained activity. The data suggest that Piezo1 channels sense physical activity to advantageously reset vascular control.The mechanisms that regulate the body's response to exercise are poorly understood. Here, Rode et al. show that the mechanically activated cation channel Piezo1 is a molecular sensor of physical exercise in the endothelium that triggers endothelial communication to mesenteric vessel muscle cells, leading to vasoconstriction.
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Affiliation(s)
- Baptiste Rode
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Jian Shi
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Naima Endesh
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | | | - Peter J Webster
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Sabine J Lotteau
- School of Biomedical Sciences, University of Leeds, Leeds, LS2 9JT, UK
| | - Marc A Bailey
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | | | | | | | - Jing Li
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - T Simon Futers
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Lara Morley
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Hannah J Gaunt
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | | | | | | | - Paul D Baxter
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Richard Foster
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK
| | | | - Andrew Weightman
- School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester, M13 9PL, UK
| | - Sarah C Calaghan
- School of Biomedical Sciences, University of Leeds, Leeds, LS2 9JT, UK
| | | | - Mark T Kearney
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - David J Beech
- Schools of Medicine, University of Leeds, Leeds, LS2 9JT, UK.
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