PMID- 25032954 OWN - NLM STAT- MEDLINE DCOM- 20151208 LR - 20211203 IS - 1528-3658 (Electronic) IS - 1076-1551 (Print) IS - 1076-1551 (Linking) VI - 20 IP - 1 DP - 2014 Oct 13 TI - Chemokine (C-X-C motif) receptor 4 and atypical chemokine receptor 3 regulate vascular alpha(1)-adrenergic receptor function. PG - 435-47 LID - 10.2119/molmed.2014.00101 [doi] AB - Chemokine (C-X-C motif) receptor (CXCR) 4 and atypical chemokine receptor (ACKR) 3 ligands have been reported to modulate cardiovascular function in various disease models. The underlying mechanisms, however, remain unknown. Thus, it was the aim of the present study to determine how pharmacological modulation of CXCR4 and ACKR3 regulate cardiovascular function. In vivo administration of TC14012, a CXCR4 antagonist and ACKR3 agonist, caused cardiovascular collapse in normal animals. During the cardiovascular stress response to hemorrhagic shock, ubiquitin, a CXCR4 agonist, stabilized blood pressure, whereas coactivation of CXCR4 and ACKR3 with CXC chemokine ligand 12 (CXCL12), or blockade of CXCR4 with AMD3100 showed opposite effects. While CXCR4 and ACKR3 ligands did not affect myocardial function, they selectively altered vascular reactivity upon alpha1-adrenergic receptor (AR) activation in pressure myography experiments. CXCR4 activation with ubiquitin enhanced alpha1-AR-mediated vasoconstriction, whereas ACKR3 activation with various natural and synthetic ligands antagonized alpha1-AR-mediated vasoconstriction. The opposing effects of CXCR4 and ACKR3 activation by CXCL12 could be dissected pharmacologically. CXCR4 and ACKR3 ligands did not affect vasoconstriction upon activation of voltage-operated Ca(2+) channels or endothelin receptors. Effects of CXCR4 and ACKR3 agonists on vascular alpha1-AR responsiveness were independent of the endothelium. These findings suggest that CXCR4 and ACKR3 modulate alpha1-AR reactivity in vascular smooth muscle and regulate hemodynamics in normal and pathological conditions. Our observations point toward CXCR4 and ACKR3 as new pharmacological targets to control vasoreactivity and blood pressure. FAU - Bach, Harold H 4th AU - Bach HH 4th AD - Department of Surgery, Loyola University Chicago, Maywood, Illinois, United States of America Department of Molecular Pharmacology and Therapeutics, Loyola University Chicago, Maywood, Illinois, United States of America. FAU - Wong, Yee M AU - Wong YM AD - Department of Surgery, Loyola University Chicago, Maywood, Illinois, United States of America. FAU - Tripathi, Abhishek AU - Tripathi A AD - Department of Surgery, Loyola University Chicago, Maywood, Illinois, United States of America. FAU - Nevins, Amanda M AU - Nevins AM AD - Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America. FAU - Gamelli, Richard L AU - Gamelli RL AD - Department of Surgery, Loyola University Chicago, Maywood, Illinois, United States of America. FAU - Volkman, Brian F AU - Volkman BF AD - Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America. FAU - Byron, Kenneth L AU - Byron KL AD - Department of Molecular Pharmacology and Therapeutics, Loyola University Chicago, Maywood, Illinois, United States of America. FAU - Majetschak, Matthias AU - Majetschak M AD - Department of Surgery, Loyola University Chicago, Maywood, Illinois, United States of America Department of Molecular Pharmacology and Therapeutics, Loyola University Chicago, Maywood, Illinois, United States of America. LA - eng GR - R37 AI058072/AI/NIAID NIH HHS/United States GR - T32 GM008750/GM/NIGMS NIH HHS/United States GR - R01 GM107495/GM/NIGMS NIH HHS/United States GR - R01 AI058072/AI/NIAID NIH HHS/United States GR - T32GM008750/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20141013 PL - England TA - Mol Med JT - Molecular medicine (Cambridge, Mass.) JID - 9501023 RN - 0 (Ackr3 protein, rat) RN - 0 (Adrenergic Agonists) RN - 0 (Benzylamines) RN - 0 (Chemokine CXCL12) RN - 0 (Cxcr4 protein, rat) RN - 0 (Cyclams) RN - 0 (Heterocyclic Compounds) RN - 0 (Ligands) RN - 0 (Oligopeptides) RN - 0 (Receptors, Adrenergic, alpha-1) RN - 0 (Receptors, CXCR) RN - 0 (Receptors, CXCR4) RN - 0 (TC14012) RN - 0 (Ubiquitin) RN - 1WS297W6MV (Phenylephrine) RN - S915P5499N (plerixafor) SB - IM MH - Adrenergic Agonists/pharmacology MH - Animals MH - Benzylamines MH - Blood Pressure/drug effects/physiology MH - Chemokine CXCL12/pharmacology MH - Cyclams MH - Heterocyclic Compounds/pharmacology MH - In Vitro Techniques MH - Ligands MH - Male MH - Mesenteric Arteries/drug effects/physiology MH - Myocytes, Cardiac/drug effects/physiology MH - Oligopeptides/pharmacology MH - Phenylephrine/pharmacology MH - Rats, Inbred Lew MH - Receptors, Adrenergic, alpha-1/*physiology MH - Receptors, CXCR/agonists/*physiology MH - Receptors, CXCR4/agonists/antagonists & inhibitors/*physiology MH - Shock, Hemorrhagic/physiopathology MH - Ubiquitin/pharmacology MH - Vasoconstriction/drug effects MH - Ventricular Function, Left/drug effects PMC - PMC4212013 EDAT- 2014/07/18 06:00 MHDA- 2015/12/15 06:00 PMCR- 2014/10/13 CRDT- 2014/07/18 06:00 PHST- 2014/05/09 00:00 [received] PHST- 2014/07/14 00:00 [accepted] PHST- 2014/07/18 06:00 [entrez] PHST- 2014/07/18 06:00 [pubmed] PHST- 2015/12/15 06:00 [medline] PHST- 2014/10/13 00:00 [pmc-release] AID - molmed.2014.00101 [pii] AID - 14_101_bach [pii] AID - 10.2119/molmed.2014.00101 [doi] PST - epublish SO - Mol Med. 2014 Oct 13;20(1):435-47. doi: 10.2119/molmed.2014.00101.