Molecular Cloning, Tissue Distribution, and Pharmacological Characterization of GPR84 in Grass Carp (<i>Ctenopharyngodon Idella</i>)

The G-protein-coupled receptor GPR84, activated by medium-chain fatty acids, primarily expressed in macrophages and microglia, is involved in inflammatory responses and retinal development in mammals and amphibians. However, our understanding of its structure, function, tissue expression, and signal...

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Main Authors: Yang Li, Wei-Jia Song, Shao-Kui Yi, Hui-Xia Yu, Hao-Lin Mo, Ming-Xing Yao, Ya-Xiong Tao, Li-Xin Wang
Format: Article
Language:English
Published: MDPI AG 2023-09-01
Series:Animals
Subjects:
Online Access:https://www.mdpi.com/2076-2615/13/19/3001
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author Yang Li
Wei-Jia Song
Shao-Kui Yi
Hui-Xia Yu
Hao-Lin Mo
Ming-Xing Yao
Ya-Xiong Tao
Li-Xin Wang
author_facet Yang Li
Wei-Jia Song
Shao-Kui Yi
Hui-Xia Yu
Hao-Lin Mo
Ming-Xing Yao
Ya-Xiong Tao
Li-Xin Wang
author_sort Yang Li
collection DOAJ
description The G-protein-coupled receptor GPR84, activated by medium-chain fatty acids, primarily expressed in macrophages and microglia, is involved in inflammatory responses and retinal development in mammals and amphibians. However, our understanding of its structure, function, tissue expression, and signaling pathways in fish is limited. In this study, we cloned and characterized the coding sequence of GPR84 (ciGPR84) in grass carp. A phylogenetic analysis revealed its close relationship with bony fishes. High expression levels of GPR84 were observed in the liver and spleen. The transfection of HEK293T cells with ciGPR84 demonstrated its responsiveness to medium-chain fatty acids and diindolylmethane (DIM). Capric acid, undecanoic acid, and lauric acid activated ERK and inhibited cAMP signaling. Lauric acid showed the highest efficiency in activating the ERK pathway, while capric acid was the most effective in inhibiting cAMP signaling. Notably, DIM did not activate GPR84 in grass carp, unlike in mammals. These findings provide valuable insights for mitigating chronic inflammation in grass carp farming and warrant further exploration of the role of medium-chain fatty acids in inflammation regulation in this species.
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spelling doaj.art-18fa4848792b48cb9e8389ef60f692ab2023-11-19T13:58:51ZengMDPI AGAnimals2076-26152023-09-011319300110.3390/ani13193001Molecular Cloning, Tissue Distribution, and Pharmacological Characterization of GPR84 in Grass Carp (<i>Ctenopharyngodon Idella</i>)Yang Li0Wei-Jia Song1Shao-Kui Yi2Hui-Xia Yu3Hao-Lin Mo4Ming-Xing Yao5Ya-Xiong Tao6Li-Xin Wang7College of Animal Science and Technology, Northwest A&F University, Yangling 712100, ChinaCollege of Animal Science and Technology, Northwest A&F University, Yangling 712100, ChinaCollege of Life Sciences, Huzhou University, Huzhou 313000, ChinaCollege of Animal Science and Technology, Northwest A&F University, Yangling 712100, ChinaCollege of Animal Science and Technology, Northwest A&F University, Yangling 712100, ChinaCollege of Animal Science and Technology, Northwest A&F University, Yangling 712100, ChinaDepartment of Anatomy, Physiology and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USACollege of Animal Science and Technology, Northwest A&F University, Yangling 712100, ChinaThe G-protein-coupled receptor GPR84, activated by medium-chain fatty acids, primarily expressed in macrophages and microglia, is involved in inflammatory responses and retinal development in mammals and amphibians. However, our understanding of its structure, function, tissue expression, and signaling pathways in fish is limited. In this study, we cloned and characterized the coding sequence of GPR84 (ciGPR84) in grass carp. A phylogenetic analysis revealed its close relationship with bony fishes. High expression levels of GPR84 were observed in the liver and spleen. The transfection of HEK293T cells with ciGPR84 demonstrated its responsiveness to medium-chain fatty acids and diindolylmethane (DIM). Capric acid, undecanoic acid, and lauric acid activated ERK and inhibited cAMP signaling. Lauric acid showed the highest efficiency in activating the ERK pathway, while capric acid was the most effective in inhibiting cAMP signaling. Notably, DIM did not activate GPR84 in grass carp, unlike in mammals. These findings provide valuable insights for mitigating chronic inflammation in grass carp farming and warrant further exploration of the role of medium-chain fatty acids in inflammation regulation in this species.https://www.mdpi.com/2076-2615/13/19/3001GPR84medium-chain fatty acidgrass carpexpressionsignaling
spellingShingle Yang Li
Wei-Jia Song
Shao-Kui Yi
Hui-Xia Yu
Hao-Lin Mo
Ming-Xing Yao
Ya-Xiong Tao
Li-Xin Wang
Molecular Cloning, Tissue Distribution, and Pharmacological Characterization of GPR84 in Grass Carp (<i>Ctenopharyngodon Idella</i>)
Animals
GPR84
medium-chain fatty acid
grass carp
expression
signaling
title Molecular Cloning, Tissue Distribution, and Pharmacological Characterization of GPR84 in Grass Carp (<i>Ctenopharyngodon Idella</i>)
title_full Molecular Cloning, Tissue Distribution, and Pharmacological Characterization of GPR84 in Grass Carp (<i>Ctenopharyngodon Idella</i>)
title_fullStr Molecular Cloning, Tissue Distribution, and Pharmacological Characterization of GPR84 in Grass Carp (<i>Ctenopharyngodon Idella</i>)
title_full_unstemmed Molecular Cloning, Tissue Distribution, and Pharmacological Characterization of GPR84 in Grass Carp (<i>Ctenopharyngodon Idella</i>)
title_short Molecular Cloning, Tissue Distribution, and Pharmacological Characterization of GPR84 in Grass Carp (<i>Ctenopharyngodon Idella</i>)
title_sort molecular cloning tissue distribution and pharmacological characterization of gpr84 in grass carp i ctenopharyngodon idella i
topic GPR84
medium-chain fatty acid
grass carp
expression
signaling
url https://www.mdpi.com/2076-2615/13/19/3001
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