PMID- 24838176 OWN - NLM STAT- MEDLINE DCOM- 20140828 LR - 20201209 IS - 1524-4571 (Electronic) IS - 0009-7330 (Linking) VI - 115 IP - 2 DP - 2014 Jul 7 TI - Stretch-activation of angiotensin II type 1a receptors contributes to the myogenic response of mouse mesenteric and renal arteries. PG - 263-72 LID - 10.1161/CIRCRESAHA.115.302882 [doi] AB - RATIONALE: Vascular wall stretch is the major stimulus for the myogenic response of small arteries to pressure. The molecular mechanisms are elusive, but recent findings suggest that G protein-coupled receptors can elicit a stretch response. OBJECTIVE: To determine whether angiotensin II type 1 receptors (AT1R) in vascular smooth muscle cells exert mechanosensitivity and identify the downstream ion channel mediators of myogenic vasoconstriction. METHODS AND RESULTS: We used mice deficient in AT1R signaling molecules and putative ion channel targets, namely AT1R, angiotensinogen, transient receptor potential channel 6 (TRPC6) channels, or several subtypes of the voltage-gated K+ (Kv7) gene family (KCNQ3, 4, or 5). We identified a mechanosensing mechanism in isolated mesenteric arteries and in the renal circulation that relies on coupling of the AT1R subtype a to a Gq/11 protein as a critical event to accomplish the myogenic response. Arterial mechanoactivation occurs after pharmacological block of AT1R and in the absence of angiotensinogen or TRPC6 channels. Activation of AT1R subtype a by osmotically induced membrane stretch suppresses an XE991-sensitive Kv channel current in patch-clamped vascular smooth muscle cells, and similar concentrations of XE991 enhance mesenteric and renal myogenic tone. Although XE991-sensitive KCNQ3, 4, and 5 channels are expressed in vascular smooth muscle cells, XE991-sensitive K+ current and myogenic contractions persist in arteries deficient in these channels. CONCLUSIONS: Our results provide definitive evidence that myogenic responses of mouse mesenteric and renal arteries rely on ligand-independent, mechanoactivation of AT1R subtype a. The AT1R subtype a signal relies on an ion channel distinct from TRPC6 or KCNQ3, 4, or 5 to enact vascular smooth muscle cell activation and elevated vascular resistance. CI - (c) 2014 American Heart Association, Inc. FAU - Schleifenbaum, Johanna AU - Schleifenbaum J AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Kassmann, Mario AU - Kassmann M AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Szijarto, Istvan Andras AU - Szijarto IA AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Hercule, Hantz C AU - Hercule HC AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Tano, Jean-Yves AU - Tano JY AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Weinert, Stefanie AU - Weinert S AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Heidenreich, Matthias AU - Heidenreich M AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Pathan, Asif R AU - Pathan AR AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Anistan, Yoland-Marie AU - Anistan YM AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Alenina, Natalia AU - Alenina N AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Rusch, Nancy J AU - Rusch NJ AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Bader, Michael AU - Bader M AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Jentsch, Thomas J AU - Jentsch TJ AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). FAU - Gollasch, Maik AU - Gollasch M AD - From the Medical Clinic for Nephrology and Internal Intensive Care, Charite Campus Virchow Klinikum, Experimental and Clinical Research Center (ECRC), Berlin, Germany (J.S., M.K., I.A.S., H.C.H., J.-Y.T., Y.-M.A., M.G.); Max Delbruck Center for Molecular Medicine, Berlin, Germany (S.W., M.H., N.A., M.B., T.J.J.); Department Physiology and Pathology of Ion Transport, Leibniz-Institut fur Molekulare Pharmakologie (FMP), Berlin, Germany (S.W., M.H., T.J.J.); Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock (A.R.P., N.J.R.); and Broad Institute of MIT and Harvard, Cambridge, MA (M.H.). maik.gollasch@charite.de. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140516 PL - United States TA - Circ Res JT - Circulation research JID - 0047103 RN - 0 (10,10-bis(4-pyridinylmethyl)-9(10H)-anthracenone) RN - 0 (Angiotensin II Type 1 Receptor Blockers) RN - 0 (Anthracenes) RN - 0 (KCNQ Potassium Channels) RN - 0 (KCNQ3 Potassium Channel) RN - 0 (KCNQ5 channel, mouse) RN - 0 (Kcnq3 protein, mouse) RN - 0 (Kcnq4 protein, mouse) RN - 0 (Receptor, Angiotensin, Type 1) RN - 0 (TRPC Cation Channels) RN - 0 (TRPC6 Cation Channel) RN - 0 (Trpc6 protein, mouse) RN - BH3B64OKL9 (4-Aminopyridine) RN - EC 3.6.5.1 (GTP-Binding Protein alpha Subunits, Gq-G11) RN - JMS50MPO89 (Losartan) SB - IM MH - 4-Aminopyridine/pharmacology MH - Angiotensin II Type 1 Receptor Blockers/pharmacology MH - Animals MH - Anthracenes/pharmacology MH - GTP-Binding Protein alpha Subunits, Gq-G11/physiology MH - HEK293 Cells MH - Hemorheology MH - Humans MH - KCNQ Potassium Channels/physiology MH - KCNQ3 Potassium Channel/physiology MH - Losartan/pharmacology MH - Mesenteric Arteries/cytology/*physiology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Myocytes, Smooth Muscle/*physiology MH - Osmotic Pressure MH - Pressoreceptors/*physiology MH - Receptor, Angiotensin, Type 1/deficiency/genetics/*physiology MH - Renal Artery/cytology/*physiology MH - TRPC Cation Channels/physiology MH - TRPC6 Cation Channel MH - Transcription, Genetic MH - Vascular Resistance/drug effects/physiology OTO - NOTNLM OT - GTP-binding protein alpha subunits, Gq-G11 OT - KCNQ potassium channels OT - TRPC cation channels OT - angiotensin II OT - mice, transgenic OT - potassium channels OT - receptor, angiotensin, type 1 EDAT- 2014/05/20 06:00 MHDA- 2014/08/29 06:00 CRDT- 2014/05/20 06:00 PHST- 2014/05/20 06:00 [entrez] PHST- 2014/05/20 06:00 [pubmed] PHST- 2014/08/29 06:00 [medline] AID - CIRCRESAHA.115.302882 [pii] AID - 10.1161/CIRCRESAHA.115.302882 [doi] PST - ppublish SO - Circ Res. 2014 Jul 7;115(2):263-72. doi: 10.1161/CIRCRESAHA.115.302882. Epub 2014 May 16.