Jovancevic, Nikolina, Dendorfer, A., Matzkies, M., Kovarova, M., Heckmann, J. C., Osterloh, M., Boehm, M., Weber, L., Nguemo, F., Semmler, J., Hescheler, J., Milting, H., Schleicher, E., Gelis, L. and Hatt, H. (2017). Medium-chain fatty acids modulate myocardial function via a cardiac odorant receptor. Basic Res. Cardiol., 112 (2). HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1435-1803

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Abstract

Several studies have demonstrated the expression of odorant receptors (OR) in various human tissues and their involvement in different physiological and pathophysiological processes. However, the functional role of ORs in the human heart is still unclear. Here, we firstly report the functional characterization of an OR in the human heart. Initial next-generation sequencing analysis revealed the OR expression pattern in the adult and fetal human heart and identified the fatty acid-sensing OR51E1 as the most highly expressed OR in both cardiac development stages. An extensive characterization of the OR51E1 ligand profile by luciferase reporter gene activation assay identified 2-ethylhexanoic acid as a receptor antagonist and various structurally related fatty acids as novel OR51E1 ligands, some of which were detected at receptor-activating concentrations in plasma and epicardial adipose tissue. Functional investigation of the endogenous receptor was carried out by Ca2+ imaging of human stem cell-derived cardiomyocytes. Application of OR51E1 ligands induced negative chronotropic effects that depended on activation of the OR. OR51E1 activation also provoked a negative inotropic action in cardiac trabeculae and slice preparations of human explanted ventricles. These findings indicate that OR51E1 may play a role as metabolic regulator of cardiac function.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Jovancevic, NikolinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dendorfer, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Matzkies, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kovarova, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Heckmann, J. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Osterloh, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boehm, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Weber, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nguemo, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Semmler, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hescheler, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Milting, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schleicher, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gelis, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hatt, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-238785
DOI: 10.1007/s00395-017-0600-y
Journal or Publication Title: Basic Res. Cardiol.
Volume: 112
Number: 2
Date: 2017
Publisher: SPRINGER HEIDELBERG
Place of Publication: HEIDELBERG
ISSN: 1435-1803
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
PROTEIN-COUPLED-RECEPTOR; BETA-GAMMA-SUBUNITS; EPICARDIAL ADIPOSE-TISSUE; MAMMALIAN OLFACTORY RECEPTOR; EMBRYONIC STEM-CELLS; PROSTATE-CANCER; ARACHIDONIC-ACID; NEGATIVE INOTROPY; ADENYLYL-CYCLASE; ACTIVATION STATEMultiple languages
Cardiac & Cardiovascular SystemsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/23878

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