Olfactory receptor Olfr544 responding to azelaic acid regulates glucagon secretion in alpha-cells of mouse pancreatic islets

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Olfactory receptors (ORs) are extensively expressed in olfactory as well as non-olfactory tissues. Although many OR transcripts are expressed in non-olfactory tissues, only a few studies demonstrate the functional role of ORs. Here, we verified that mouse pancreatic alpha-cells express potential OR-mediated downstream effectors. Moreover, high levels of mRNA for the olfactory receptors Olfr543, Olfr544, Olfr545, and Olfr1349 were expressed in alpha-cells as assessed using RNA-sequencing, microarray, and quantitative real-time RT-PCR analyses. Treatment with dicarboxylic acids (azelaic acid and sebacic acid) increased intracellular Ca2+ mobilization in pancreatic alpha-cells. The azelaic acid-induced Ca2+ response as well as glucagon secretion was concentration- and time-dependent manner. Olfr544 was expressed in alpha-cells, and the EC50 value of azelaic acid to Olfr544 was 19.97 mu M, whereas Olfr545 did not respond to azelaic acid. Our findings demonstrate that Olfr544 responds to azelaic acid to regulate glucagon secretion through Ca2+ mobilization in alpha-cells of the mouse pancreatic islets, suggesting that Olfr544 may be an important therapeutic target for metabolic diseases. (C) 2015 Elsevier Inc. All rights reserved.
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Issue Date
2015-05
Language
English
Article Type
Article
Citation

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, v.460, no.3, pp.616 - 621

ISSN
0006-291X
DOI
10.1016/j.bbrc.2015.03.078
URI
http://hdl.handle.net/10203/272829
Appears in Collection
CS-Journal Papers(저널논문)
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