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GPR84 Is Essential for the Taste of Medium Chain Saturated Fatty Acids.
Liu, Yan; Xu, Han; Dahir, Naima; Calder, Ashley; Lin, Fangjun; Gilbertson, Timothy A.
Afiliación
  • Liu Y; Department of Internal Medicine, University of Central Florida, Orlando, Florida 32827.
  • Xu H; Department of Biology, Utah State University, Logan, Utah 84322.
  • Dahir N; Burnett School of Biomedical Sciences, University of Central Florida, Orlando, Florida 32827.
  • Calder A; Burnett School of Biomedical Sciences, University of Central Florida, Orlando, Florida 32827.
  • Lin F; Burnett School of Biomedical Sciences, University of Central Florida, Orlando, Florida 32827.
  • Gilbertson TA; Department of Internal Medicine, University of Central Florida, Orlando, Florida 32827 timothy.gilbertson@ucf.edu.
J Neurosci ; 41(24): 5219-5228, 2021 06 16.
Article en En | MEDLINE | ID: mdl-33941648
The ability of mammalian taste cells to respond to fatty acids (FAs) has garnered significant attention of late and has been proposed to represent a sixth primary taste. With few exceptions, studies on FA taste have centered exclusively on polyunsaturated FAs, most notably on linoleic acid. In the current study, we have identified an additional FA receptor, GPR84, in the gustatory system that responds to the medium-chain saturated FAs (MCFAs) in male mice. GPR84 ligands activate both Type II and Type III taste cells in calcium imaging and patch-clamp recording assays. MCFAs depolarize and lead to a rise in intracellular free [Ca2+] in mouse taste cells in a concentration-dependent fashion, and the relative ligand specificity in taste cells is consistent with the response profile of GPR84 expressed in a heterologous system. A systemic Gpr84-/- mouse model reveals a specific deficit in both the neural (via chorda tympani recording) and behavioral responses to administration of oral MCFAs compared with WT mice. Together, we show that the peripheral taste system can respond to an additional class of FAs, the saturated FAs, and that the cognate receptor necessary for this ability is GPR84.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Gusto / Papilas Gustativas / Receptores Acoplados a Proteínas G / Ácidos Grasos Límite: Animals Idioma: En Revista: J Neurosci Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Gusto / Papilas Gustativas / Receptores Acoplados a Proteínas G / Ácidos Grasos Límite: Animals Idioma: En Revista: J Neurosci Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos