Xianglong Li , Kaiguo Xia , Chuanhong Zhong , Xiangzhou Chen , Fubing Yang , Ligang Chen , Jian You
{"title":"GPR68 通过 NF-κB/Hif-1α 通路对脑缺血再灌注损伤的神经保护作用","authors":"Xianglong Li , Kaiguo Xia , Chuanhong Zhong , Xiangzhou Chen , Fubing Yang , Ligang Chen , Jian You","doi":"10.1016/j.brainresbull.2024.111050","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><p>G protein-coupled receptor 68 (GPR68), an orphan receptor, has emerged as a promising therapeutic target for mitigating neuronal inflammation and oxidative damage. This study explores the protective mechanisms of GPR68 in cerebral ischemia-reperfusion injury (CIRI).</p></div><div><h3>Methods</h3><p>An <em>in vivo</em> middle cerebral artery occlusion/reperfusion (MCAO/R) mouse model was established. Mice received intraperitoneal injections of Ogerin, a selective GPR68 agonist. <em>In vitro</em>, GPR68 was overexpressed in SH-SY5Y and HMC3 cells, and the effects of oxygen-glucose deprivation/reperfusion (OGD/R) on cell viability were assessed using real-time quantitative polymerase chain reaction (RT-qPCR), enzyme-linked immunosorbent assay (ELISA), and flow cytometry.</p></div><div><h3>Results</h3><p>The expression of GPR68 was suppressed in cells subjected to OGD/R treatment, whereas its upregulation conferred protection to SH-SY5Y and HMC3 cells. <em>In vivo</em>, levels of GPR68 were reduced in brain tissues affected by MCAO/R, correlating with oxidative stress, inflammation, and neurological damage. Treatment with a GPR68 agonist decreased brain infarction, apoptosis, and dysregulated gene expression induced by MCAO/R. Mechanistically, GPR68 agonist treatment may inhibit the activation of the NF-κB/Hif-1α pathway, thereby reducing oxidative and inflammatory responses and enhancing protection against CIRI.</p></div><div><h3>Conclusions</h3><p>This study confirms that the GPR68/NF-κB/Hif-1α axis modulates apoptosis, inflammation, and oxidative stress in CIRI, indicating that GPR68 is a potential therapeutic target for CIRI.</p></div>","PeriodicalId":9302,"journal":{"name":"Brain Research Bulletin","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0361923024001837/pdfft?md5=ef11d79206961df7cef8804c31a6e55d&pid=1-s2.0-S0361923024001837-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Neuroprotective effects of GPR68 against cerebral ischemia-reperfusion injury via the NF-κB/Hif-1α pathway\",\"authors\":\"Xianglong Li , Kaiguo Xia , Chuanhong Zhong , Xiangzhou Chen , Fubing Yang , Ligang Chen , Jian You\",\"doi\":\"10.1016/j.brainresbull.2024.111050\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><p>G protein-coupled receptor 68 (GPR68), an orphan receptor, has emerged as a promising therapeutic target for mitigating neuronal inflammation and oxidative damage. This study explores the protective mechanisms of GPR68 in cerebral ischemia-reperfusion injury (CIRI).</p></div><div><h3>Methods</h3><p>An <em>in vivo</em> middle cerebral artery occlusion/reperfusion (MCAO/R) mouse model was established. Mice received intraperitoneal injections of Ogerin, a selective GPR68 agonist. <em>In vitro</em>, GPR68 was overexpressed in SH-SY5Y and HMC3 cells, and the effects of oxygen-glucose deprivation/reperfusion (OGD/R) on cell viability were assessed using real-time quantitative polymerase chain reaction (RT-qPCR), enzyme-linked immunosorbent assay (ELISA), and flow cytometry.</p></div><div><h3>Results</h3><p>The expression of GPR68 was suppressed in cells subjected to OGD/R treatment, whereas its upregulation conferred protection to SH-SY5Y and HMC3 cells. <em>In vivo</em>, levels of GPR68 were reduced in brain tissues affected by MCAO/R, correlating with oxidative stress, inflammation, and neurological damage. Treatment with a GPR68 agonist decreased brain infarction, apoptosis, and dysregulated gene expression induced by MCAO/R. Mechanistically, GPR68 agonist treatment may inhibit the activation of the NF-κB/Hif-1α pathway, thereby reducing oxidative and inflammatory responses and enhancing protection against CIRI.</p></div><div><h3>Conclusions</h3><p>This study confirms that the GPR68/NF-κB/Hif-1α axis modulates apoptosis, inflammation, and oxidative stress in CIRI, indicating that GPR68 is a potential therapeutic target for CIRI.</p></div>\",\"PeriodicalId\":9302,\"journal\":{\"name\":\"Brain Research Bulletin\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-08-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0361923024001837/pdfft?md5=ef11d79206961df7cef8804c31a6e55d&pid=1-s2.0-S0361923024001837-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Brain Research Bulletin\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0361923024001837\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"NEUROSCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Brain Research Bulletin","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0361923024001837","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"NEUROSCIENCES","Score":null,"Total":0}
Neuroprotective effects of GPR68 against cerebral ischemia-reperfusion injury via the NF-κB/Hif-1α pathway
Background
G protein-coupled receptor 68 (GPR68), an orphan receptor, has emerged as a promising therapeutic target for mitigating neuronal inflammation and oxidative damage. This study explores the protective mechanisms of GPR68 in cerebral ischemia-reperfusion injury (CIRI).
Methods
An in vivo middle cerebral artery occlusion/reperfusion (MCAO/R) mouse model was established. Mice received intraperitoneal injections of Ogerin, a selective GPR68 agonist. In vitro, GPR68 was overexpressed in SH-SY5Y and HMC3 cells, and the effects of oxygen-glucose deprivation/reperfusion (OGD/R) on cell viability were assessed using real-time quantitative polymerase chain reaction (RT-qPCR), enzyme-linked immunosorbent assay (ELISA), and flow cytometry.
Results
The expression of GPR68 was suppressed in cells subjected to OGD/R treatment, whereas its upregulation conferred protection to SH-SY5Y and HMC3 cells. In vivo, levels of GPR68 were reduced in brain tissues affected by MCAO/R, correlating with oxidative stress, inflammation, and neurological damage. Treatment with a GPR68 agonist decreased brain infarction, apoptosis, and dysregulated gene expression induced by MCAO/R. Mechanistically, GPR68 agonist treatment may inhibit the activation of the NF-κB/Hif-1α pathway, thereby reducing oxidative and inflammatory responses and enhancing protection against CIRI.
Conclusions
This study confirms that the GPR68/NF-κB/Hif-1α axis modulates apoptosis, inflammation, and oxidative stress in CIRI, indicating that GPR68 is a potential therapeutic target for CIRI.
期刊介绍:
The Brain Research Bulletin (BRB) aims to publish novel work that advances our knowledge of molecular and cellular mechanisms that underlie neural network properties associated with behavior, cognition and other brain functions during neurodevelopment and in the adult. Although clinical research is out of the Journal''s scope, the BRB also aims to publish translation research that provides insight into biological mechanisms and processes associated with neurodegeneration mechanisms, neurological diseases and neuropsychiatric disorders. The Journal is especially interested in research using novel methodologies, such as optogenetics, multielectrode array recordings and life imaging in wild-type and genetically-modified animal models, with the goal to advance our understanding of how neurons, glia and networks function in vivo.