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He Q, Zhou Y, Wu L, Huang L, Yuan Y, Flores JJ, Luo X, Tao Y, Chen X, Kanamaru H, Dong S, Zhu S, Yu Q, Han M, Sherchan P, Li J, Tang J, Xie Z, Zhang JH. Inhibition of acid-sensing receptor GPR4 attenuates neuronal ferroptosis via RhoA/YAP signaling in a rat model of subarachnoid hemorrhage. Free Radic Biol Med 2024:S0891-5849(24)00974-2. [PMID: 39393553 DOI: 10.1016/j.freeradbiomed.2024.10.273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2024] [Revised: 09/25/2024] [Accepted: 10/08/2024] [Indexed: 10/13/2024]
Abstract
BACKGROUND AND PURPOSE Subarachnoid hemorrhage (SAH) is a devastating stroke, in which acidosis is one of detrimental complications. The extracellular pH reduction can activate G protein-coupled receptor 4 (GPR4) in the brain. Yet, the extent to which proton-activated GPR4 contributes to the early brain injury (EBI) post-SAH remains largely unexplored. Ferroptosis, iron-dependent programmed cell death, has recently been shown to contribute to EBI. We aimed to investigate the effects of GPR4 inhibition on neurological deficits and neuronal ferroptosis after SAH in rats. METHODS A total 253 Sprague Dawley (SD) male rats (weighing 275-330g) were utilized in this study. SAH was induced by endovascular perforation. NE-52-QQ57 (NE), a selective antagonist of GPR4 was administered intraperitoneally 1-hour post-SAH. To explore the mechanisms, RhoA activator U-46619 and YAP activator PY-60 were delivered intracerebroventricularly. Short- and long-term neurobehavior, SAH grading, western blot assay, ELISA assay, immunofluorescence staining, and transmission electron microscopy was performed post-SAH. RESULTS Following SAH, there was an upregulation of GPR4 expression in neurons. GPR4 inhibition by NE improved both short-term and long-term neurological outcomes post-SAH. NE also reduced neuronal ferroptosis, as evidenced by decreased lipid peroxidation products 4HNE and MDA levels in brain tissues, and reduced mitochondrial shrinkage, increased mitochondria crista and decreased membrane density. The application of either U-46619 or PY-60 partially offset the neuroprotective effects of NE on neuronal ferroptosis in SAH rats. CONCLUSIONS This study demonstrated that acid-sensing receptor GPR4 contributed to neuronal ferroptosis after SAH via RhoA/YAP pathway, and NE may be a potential therapeutic strategy to attenuate GPR4 mediated neuronal ferroptosis and EBI after SAH.
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Affiliation(s)
- Qiuguang He
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China; Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - You Zhou
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA; Department of Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China
| | - Lei Wu
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA; Department of Neurology, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, 510317, China
| | - Lei Huang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA; Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - Ye Yuan
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China; Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - Jerry J Flores
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - Xu Luo
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China
| | - Yihao Tao
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China
| | - Xionghui Chen
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - Hideki Kanamaru
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - Siyuan Dong
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - Shiyi Zhu
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - Qian Yu
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - Mingyang Han
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - Prativa Sherchan
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - Jiani Li
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA
| | - Zongyi Xie
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China.
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA; Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA; Department of Anesthesiology and Neurology, Loma Linda University School of Medicine, Loma Linda, California, 92354, USA.
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Weng W, Fu J, Cheng F, Wang Y, Zhang J. Integrated Bulk and Single-Cell RNA-Sequencing Reveals the Effects of Circadian Rhythm Disruption on the Metabolic Reprogramming of CD4+ T Cells in Alzheimer's Disease. Mol Neurobiol 2024; 61:6013-6030. [PMID: 38265551 DOI: 10.1007/s12035-023-03907-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 12/22/2023] [Indexed: 01/25/2024]
Abstract
Although growing evidence suggests close correlations between Alzheimer's disease (AD) and circadian rhythm disruption (CRD), few studies have focused on the influence of circadian rhythm on levels of immune cells in AD. We aimed to delineate the mechanism underlying the effects of circadian related genes on T cell immune function in AD. A total of 112 brain samples were used to construct the CRD-related model by performing weighted gene co-expression network analysis and machine learning algorithms (LASSO, SVM-RFE, and RF). The ssGSEA method was used to calculate the CRDscore in order to quantify CRD status. Using single-cell transcriptome data of CSF cells, we investigated the CD4+ T cell metabolism and cell-cell communication in high- and low-risk CRD groups. Connectivity map (CMap) was applied to explore small molecule drugs targeting CRD, and the expression of the signature gene GPR4 was further validated in AD. The CRDscore algorithm, which is based on 23 circadian-related genes, can effectively classify the CRD status in AD datasets. The single-cell analysis revealed that the CD4+ T cells with high CRDscore were characterized by hypometabolism. Cell communication analysis revealed that CD4+ T cells might be involved in promoting CD8+ T cell adhesion under CRD, which may facilitate T cell infiltration into the brain parenchyma. Overall, this study indicates the potential connotation of circadian rhythm in AD, providing insights into understanding T cell metabolic reprogramming under CRD.
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Affiliation(s)
- Weipin Weng
- Department of Neurology, The Second Xiangya Hospital of Central South University, Changsha, China
- Department of Neurology, Center for Cognitive Neurology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Jianhan Fu
- Department of Urology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Fan Cheng
- Department of Neurology, The Second Xiangya Hospital of Central South University, Changsha, China
- Clinical Medical Research Center for Stroke Prevention and Treatment of Hunan Province, Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Yixuan Wang
- Department of Neurology, The Second Xiangya Hospital of Central South University, Changsha, China
- Clinical Medical Research Center for Stroke Prevention and Treatment of Hunan Province, Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Jie Zhang
- Department of Neurology, The Second Xiangya Hospital of Central South University, Changsha, China.
- Clinical Medical Research Center for Stroke Prevention and Treatment of Hunan Province, Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, China.
- Department of Neurology, Turpan City People's Hospital, Tulufan, China.
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Hui C, Jin J, Ji M, Wang H, Wang X, Ma J, Wang Y, Si Y, Chen S, Guo T. Neuroprotective properties of the Lilium brownii extracts in the experimental model of Parkinson's disease. Metab Brain Dis 2024; 39:1085-1097. [PMID: 39060803 DOI: 10.1007/s11011-024-01397-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 07/20/2024] [Indexed: 07/28/2024]
Abstract
Lilium brownii (L. brownii) is a plant that can be used for both medicine and food. Its bulbs are commonly used to treat neurological disorders like depression, insomnia, and Parkinson's disease (PD). However, the mechanism by which it treats PD is not yet fully understood. This study aims to investigate the possible mechanism of L. brownii extract in treating PD and to compare the efficacy of ethanol and aqueous extracts of L. brownii. In this study, mice with PD induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine hydrochloride (MPTP) were given L. brownii extracts for 30 days, and the effects of both extracts were then evaluated. Our study demonstrated that both extracts of L. brownii effectively improved motor dysfunction in PD mice induced by MPTP. Additionally, they increased the number of neurons in the substantia nigra region of the mice. Moreover, both extracts reduced levels of malondialdehyde (MDA) and ferrous ion (Fe2+), while increasing levels of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in serum. They also influenced the expression of proteins associated with the p62-Keap1-Nrf2 pathway. Interestingly, while both extracts had similar behavioral effects, the ethanol extract appeared to have a more significant impact on individual proteins in the p62-Keap1-Nrf2 pathway compared to the aqueous extract, possibly due to its higher phenolic acid glyceride content. In conclusion, L. brownii shows promise as an effective and safe treatment for PD.
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Affiliation(s)
- Chengcheng Hui
- Department of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Jinghui Jin
- Department of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Mengshan Ji
- Department of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Haibo Wang
- Henan Institute for Drug and Medical Device Inspection (Henan Vaccine Issuance Center), NMPA Key Laboratory for Quality Control of Traditional Chinese Medicine (Chinese Materia Medica and prepared slices), Zhengzhou, 450018, China
| | - Xiaowei Wang
- Henan Institute for Drug and Medical Device Inspection (Henan Vaccine Issuance Center), NMPA Key Laboratory for Quality Control of Traditional Chinese Medicine (Chinese Materia Medica and prepared slices), Zhengzhou, 450018, China
| | - Jianping Ma
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Ya Wang
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Yanpo Si
- Department of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Suiqing Chen
- Department of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Tao Guo
- Department of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China.
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Aktas B, Aslim B, Ozdemir DA. A neurotherapeutic approach with Lacticaseibacillus rhamnosus E9 on gut microbiota and intestinal barrier in MPTP-induced mouse model of Parkinson's disease. Sci Rep 2024; 14:15460. [PMID: 38965287 PMCID: PMC11224381 DOI: 10.1038/s41598-024-65061-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 06/17/2024] [Indexed: 07/06/2024] Open
Abstract
The gut microbiota plays a crucial role in neural development and progression of neural disorders like Parkinson's disease (PD). Probiotics have been suggested to impact neurodegenerative diseases via gut-brain axis. This study aims to investigate the therapeutic potential of Lacticaseibacillus rhamnosus E9, a high exopolysaccharide producer, on 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP)-induced mouse model of PD. C57BL/6 mice subjected to MPTP were fed L. rhamnosus E9 for fifteen days and sacrificed after the last administration. Motor functions were determined by open-field, catalepsy, and wire-hanging tests. The ileum and the brain tissues were collected for ELISA, qPCR, and immunohistochemistry analyses. The cecum content was obtained for microbiota analysis. E9 supplementation alleviated MPTP-induced motor dysfunctions accompanied by decreased levels of striatal TH and dopamine. E9 also reduced the level of ROS in the striatum and decreased the DAT expression while increasing the DR1. Furthermore, E9 improved intestinal integrity by enhancing ZO-1 and Occludin levels and reversed the dysbiosis of the gut microbiota induced by MPTP. In conclusion, E9 supplementation improved the MPTP-induced motor deficits and neural damage as well as intestinal barrier by modulating the gut microbiota in PD mice. These findings suggest that E9 supplementation holds therapeutic potential in managing PD through the gut-brain axis.
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Affiliation(s)
- Busra Aktas
- Department of Molecular Biology and Genetics, Burdur Mehmet Akif Ersoy University, Burdur, 15200, Turkey.
| | - Belma Aslim
- Department of Biology, Faculty of Science, Gazi University, Ankara, 06500, Turkey
| | - Deniz Ates Ozdemir
- Department of Pathology, Faculty of Medicine, Hacettepe University, Ankara, 06230, Turkey
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Nakanishi M, Ibe A, Morishita K, Shinagawa K, Yamamoto Y, Takahashi H, Ikemori K, Muragaki Y, Ehata S. Acid-sensing receptor GPR4 plays a crucial role in lymphatic cancer metastasis. Cancer Sci 2024; 115:1551-1563. [PMID: 38410865 PMCID: PMC11093208 DOI: 10.1111/cas.16098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 01/08/2024] [Accepted: 01/17/2024] [Indexed: 02/28/2024] Open
Abstract
Cancer tissues exhibit an acidic microenvironment owing to the accumulation of protons and lactic acid produced by cancer and inflammatory cells. To examine the role of an acidic microenvironment in lymphatic cancer metastasis, gene expression profiling was conducted using human dermal lymphatic endothelial cells (HDLECs) treated with a low pH medium. Microarray and gene set enrichment analysis revealed that acid treatment induced the expression of inflammation-related genes in HDLECs, including genes encoding chemokines and adhesion molecules. Acid treatment-induced chemokines C-X3-C motif chemokine ligand 1 (CX3CL1) and C-X-C motif chemokine ligand 6 (CXCL6) autocrinally promoted the growth and tube formation of HDLECs. The expression of vascular cell adhesion molecule 1 (VCAM-1) increased in HDLECs after acid treatment in a time-dependent manner, which, in turn, enhanced their adhesion to melanoma cells. Among various acid-sensing receptors, HDLECs basally expressed G protein-coupled receptor 4 (GPR4), which was augmented under the acidic microenvironment. The induction of chemokines or VCAM-1 under acidic conditions was attenuated by GPR4 knockdown in HDLECs. In addition, lymph node metastases in a mouse melanoma model were suppressed by administering an anti-VCAM-1 antibody or a GPR4 antagonist. These results suggest that an acidic microenvironment modifies the function of lymphatic endothelial cells via GPR4, thereby promoting lymphatic cancer metastasis. Acid-sensing receptors and their downstream molecules might serve as preventive or therapeutic targets in cancer.
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Affiliation(s)
- Masako Nakanishi
- Department of Pathology, School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Akiya Ibe
- Department of Pathology, School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Kiyoto Morishita
- Department of Pathology, School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Kazutaka Shinagawa
- Department of Pathology, School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Yushi Yamamoto
- Department of Pathology, School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Hibiki Takahashi
- Department of Pathology, School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Kyoka Ikemori
- Department of Pathology, School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Yasuteru Muragaki
- Department of Pathology, School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Shogo Ehata
- Department of Pathology, School of MedicineWakayama Medical UniversityWakayamaJapan
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Glitsch MD. Recent advances in acid sensing by G protein coupled receptors. Pflugers Arch 2024; 476:445-455. [PMID: 38340167 PMCID: PMC11006784 DOI: 10.1007/s00424-024-02919-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/30/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024]
Abstract
Changes in extracellular proton concentrations occur in a variety of tissues over a range of timescales under physiological conditions and also accompany virtually all pathologies, notably cancers, stroke, inflammation and trauma. Proton-activated, G protein coupled receptors are already partially active at physiological extracellular proton concentrations and their activity increases with rising proton concentrations. Their ability to monitor and report changes in extracellular proton concentrations and hence extracellular pH appears to be involved in a variety of processes, and it is likely to mirror and in some cases promote disease progression. Unsurprisingly, therefore, these pH-sensing receptors (pHR) receive increasing attention from researchers working in an expanding range of research areas, from cellular neurophysiology to systemic inflammatory processes. This review is looking at progress made in the field of pHRs over the past few years and also highlights outstanding issues.
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Affiliation(s)
- Maike D Glitsch
- Medical School Hamburg, Am Sandtorkai 1, 20457, Hamburg, Germany.
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Omar NA, Kumar J, Teoh SL. Parkinson's disease model in zebrafish using intraperitoneal MPTP injection. Front Neurosci 2023; 17:1236049. [PMID: 37694115 PMCID: PMC10485380 DOI: 10.3389/fnins.2023.1236049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/07/2023] [Indexed: 09/12/2023] Open
Abstract
Introduction Parkinson's disease (PD) is the second most common neurodegenerative disease that severely affects the quality of life of patients and their family members. Exposure to 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) has been shown to reflect behavioral, molecular, and proteomic features of PD. This study aimed to assess the protocol for inducing PD following MPTP injection in adult zebrafish. Methods Fish were injected with 100 μg/g of MPTP intraperitoneally once or twice and then assessed on days 1 to 30 post-injection. Results Between one-time and two-time injections, there was no significant difference in most locomotor parameters, expressions of tyrosine hydroxylase-2 (th2) and dopamine transporter (dat) genes, and dopaminergic neurons (tyrosine hydroxylase positive, TH+ cells) counts. However, caspase-3 levels significantly differed between one- and two-time injections on the day 1 assessment. Discussion Over a 30-day period, the parameters showed significant differences in swimming speed, total distance traveled, tyrosine hydroxylase-1 (th1) and dat gene expressions, caspase-3 and glutathione protein levels, and TH+ cell counts. Days 3 and 5 showed the most changes compared to the control. In conclusion, a one-time injection of MPTP with delayed assessment on days 3 to 5 is a good PD model for animal studies.
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Affiliation(s)
- Noor Azzizah Omar
- Department of Anatomy, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
- Department of Medical Sciences, Faculty of Medicine and Health Sciences, Universiti Sains Islam Malaysia, Bandar Baru Nilai, Malaysia
| | - Jaya Kumar
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Seong Lin Teoh
- Department of Anatomy, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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Aktas B. Gut Microbial Alteration in MPTP Mouse Model of Parkinson Disease is Administration Regimen Dependent. Cell Mol Neurobiol 2023; 43:2815-2829. [PMID: 36708421 PMCID: PMC9883829 DOI: 10.1007/s10571-023-01319-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 01/18/2023] [Indexed: 01/29/2023]
Abstract
Parkinson Disease (PD) is one of the most common neurodegenerative disorders characterized by loss of dopaminergic neurons involved in motor functions. Growing evidence indicates that gut microbiota communicates with the brain known as the gut-brain axis (GBA). Mitochondrial toxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) is commonly used in animal studies to investigate the GBA in PD. Various MPTP administration regimens are performed in PD mouse models involving one to multiple injections in 1 day or one injection per day for several days. The aim of this study is to investigate if the impact of MPTP on gut microbiota differs depending on the administration regimen. C57BL/6 mice were treated with acute or subchronic regimens of MPTP. Motor functions were assessed by open-field, catalepsy, and wire hanging tests. The cecum and the brain samples were obtained for microbiota and gene expression analyses, respectively. MPTP administration regimens differed in their ability to alter the gut microbiota. Firmicutes and Bacteroidota were both increased in subchronic mice while did not change and decreased, respectively, in acute mice. Verrucomicrobiota was elevated in acute MPTP mice but dropped in subchronic MPTP mice. Muribaculaceae was the predominant genus in all groups but acute mice. In acute mice, Akkermansia was increased and Colidextribacter was decreased; however, they showed an opposite trend in subchronic mice. These data suggest that MPTP mouse model cause a gut microbiota dysbiosis in an administration regimen dependent manner, and it is important to take consideration of mouse model to investigate the GBA in neurodegenerative diseases including PD.
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Affiliation(s)
- Busra Aktas
- Department of Molecular Biology and Genetics, Burdur Mehmet Akif Ersoy University Burdur, 15030, Burdur, Turkey.
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Stalewski J, Shih AY, Papazyan R, Ramirez J, Ibanez G, Hsiao P, Yue Y, Yin J, Badger C, Wu S, Ueki A, Fuchs BC, Rives ML. pH Dependence of a GPR4 Selective Antagonist Hampers Its Therapeutic Potential. J Pharmacol Exp Ther 2023; 386:35-44. [PMID: 37142444 DOI: 10.1124/jpet.122.001554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 04/21/2023] [Accepted: 04/27/2023] [Indexed: 05/06/2023] Open
Abstract
Inflammatory bowel disease (IBD) is characterized by chronic mucosal inflammation of the gastrointestinal tract and is associated with extracellular acidification of mucosal tissue. Several extracellular pH-sensing receptors, including G protein-coupled receptor 4 (GPR4), play an important role in the regulation of inflammatory and immune responses, and GPR4 deficiency has been shown to be protective in IBD animal models. To confirm the therapeutic potential of GPR4 antagonism in IBD, we tested Compound 13, a selective GPR4 antagonist, in the interleukin 10-/- mouse model of colitis. Despite good exposures and albeit there was a trend toward improvement for a few readouts, Compound 13 treatment did not improve colitis in this model, and there were no signs of target engagement. Interestingly, Compound 13 behaved as an "orthosteric" antagonist, i.e., its potency was pH dependent and mostly inactive at pH levels lower than 6.8 with preferential binding to the inactive conformation of GPR4. Mutagenesis studies confirmed Compound 13 likely binds to the conserved orthosteric binding site in G protein-coupled receptors, where a histidine sits in GPR4 likely preventing Compound 13 binding when protonated in acidic conditions. While the exact mucosal pH in the human disease and relevant IBD mice models is unknown, it is well established that the degree of acidosis is positively correlated with the degree of inflammation, suggesting Compound 13 is not an ideal tool to study the role of GPR4 in moderate to severe inflammatory conditions. SIGNIFICANCE STATEMENT: Compound 13, a reported selective GPR4 antagonist, has been widely used to assess the therapeutic potential of GPR4, a pH-sensing receptor, for numerous indications. Its pH dependence and mechanism of inhibition identified in this study clearly highlights the limitations of this chemotype for target validation.
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Affiliation(s)
- Jacek Stalewski
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Amy Y Shih
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Romeo Papazyan
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Jocelyn Ramirez
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Gerardo Ibanez
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Peng Hsiao
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Yong Yue
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Jun Yin
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Calen Badger
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Shije Wu
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Akemi Ueki
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Bryan C Fuchs
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
| | - Marie-Laure Rives
- Departments of Chemistry (J.S.); Computer-Aided Drug Discovery (A.Y.S.); Gastroenterology (R.P., B.C.F.); Molecular and Cellular Pharmacology-Target Validation and Functional Genomics (J.R., M.-L.R.); In Vivo Pharmacology (G.I.); DMPK (P.H.); Computational Biology (Y.Y., J.Y., C.B.), Ferring Research Institute Inc., San Diego, California; and Biosensing Instrument, Tempe, Arizona (S.W., A.U.)
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10
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Wu Y, Hu Q, Cheng H, Yu J, Gao L, Gao G. USP30 impairs mitochondrial quality control and aggravates oxidative damage after traumatic brain injury. Biochem Biophys Res Commun 2023; 671:58-66. [PMID: 37300943 DOI: 10.1016/j.bbrc.2023.05.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 05/18/2023] [Indexed: 06/12/2023]
Abstract
Clinical progress in the treatment of traumatic brain injury (TBI) is hindered by the poor understanding of the molecular mechanisms that underlie secondary brain injury (SBI). USP30, a mitochondrial deubiquitinase, has been implicated in the pathological progress of various diseases. However, the precise role of USP30 in TBI-induced SBI remains unclear. In this study, we found that USP30 was differentially upregulated after TBI in humans and mice. Immunofluorescence staining further revealed that the enhanced USP30 mainly localized in neurons. Neuron-specific knockout of USP30 reduced lesion volumes, mitigated brain edema, and attenuated neurological deficits after TBI in mice. Additionally, we found that USP30 deficiency effectively suppressed oxidative stress and neuronal apoptosis in TBI. Those protective effects of USP30 loss may be attributed, at least partially, to the reduction of TBI-induced impairment of mitochondrial quality control, including mitochondrial dynamics, function, and mitophagy. Collectively, our findings identify a previously undisclosed role of USP30 in the pathophysiology of TBI and lay a preliminary foundation for future research in this field.
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Affiliation(s)
- Yang Wu
- Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi province, 710038, China; Department of Neurosurgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei province, 050000, China
| | - Qing Hu
- Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi province, 710038, China
| | - Hongbo Cheng
- Department of Neurosurgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei province, 050000, China
| | - Jiegang Yu
- Department of Neurosurgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei province, 050000, China
| | - Li Gao
- Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi province, 710038, China.
| | - Guodong Gao
- Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi province, 710038, China.
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11
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Hung CH, Chin Y, Fong YO, Lee CH, Han DS, Lin JH, Sun WH, Chen CC. Acidosis-related pain and its receptors as targets for chronic pain. Pharmacol Ther 2023; 247:108444. [PMID: 37210007 DOI: 10.1016/j.pharmthera.2023.108444] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/24/2023] [Accepted: 05/15/2023] [Indexed: 05/22/2023]
Abstract
Sensing acidosis is an important somatosensory function in responses to ischemia, inflammation, and metabolic alteration. Accumulating evidence has shown that acidosis is an effective factor for pain induction and that many intractable chronic pain diseases are associated with acidosis signaling. Various receptors have been known to detect extracellular acidosis and all express in the somatosensory neurons, such as acid sensing ion channels (ASIC), transient receptor potential (TRP) channels and proton-sensing G-protein coupled receptors. In addition to sense noxious acidic stimulation, these proton-sensing receptors also play a vital role in pain processing. For example, ASICs and TRPs are involved in not only nociceptive activation but also anti-nociceptive effects as well as some other non-nociceptive pathways. Herein, we review recent progress in probing the roles of proton-sensing receptors in preclinical pain research and their clinical relevance. We also propose a new concept of sngception to address the specific somatosensory function of acid sensation. This review aims to connect these acid-sensing receptors with basic pain research and clinical pain diseases, thus helping with better understanding the acid-related pain pathogenesis and their potential therapeutic roles via the mechanism of acid-mediated antinociception.
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Affiliation(s)
- Chih-Hsien Hung
- Department of Neurology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yin Chin
- Department of Life Science & Institute of Genome Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yi-On Fong
- Department of Neurology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Cheng-Han Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Der-Shen Han
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch, Taipei, Taiwan
| | - Jiann-Her Lin
- Neuroscience Research Center, Taipei Medical University, Taipei, Taiwan; Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan
| | - Wei-Hsin Sun
- Department of Life Science & Institute of Genome Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chih-Cheng Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan; Neuroscience Research Center, Taipei Medical University, Taipei, Taiwan; Neuroscience Program of Academia Sinica, Academia Sinica, Taipei, Taiwan.
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12
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Ge X, Yao T, Zhang C, Wang Q, Wang X, Xu LC. Human microRNA-4433 (hsa-miR-4443) Targets 18 Genes to be a Risk Factor of Neurodegenerative Diseases. Curr Alzheimer Res 2022; 19:511-522. [PMID: 35929619 PMCID: PMC9906632 DOI: 10.2174/1567205019666220805120303] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 01/27/2023]
Abstract
BACKGROUND Neurodegenerative diseases, such as Alzheimer's disease patients (AD), Huntington's disease (HD) and Parkinson's disease (PD), are common causes of morbidity, mortality, and cognitive impairment in older adults. OBJECTIVE We aimed to understand the transcriptome characteristics of the cortex of neurodegenerative diseases and to provide an insight into the target genes of differently expressed microRNAs in the occurrence and development of neurodegenerative diseases. METHODS The Limma package of R software was used to analyze GSE33000, GSE157239, GSE64977 and GSE72962 datasets to identify the differentially expressed genes (DEGs) and microRNAs in the cortex of neurodegenerative diseases. Bioinformatics methods, such as GO enrichment analysis, KEGG enrichment analysis and gene interaction network analysis, were used to explore the biological functions of DEGs. Weighted gene co-expression network analysis (WGCNA) was used to cluster DEGs into modules. RNA22, miRDB, miRNet 2.0 and TargetScan7 databases were performed to predict the target genes of microRNAs. RESULTS Among 310 Alzheimer's disease (AD) patients, 157 Huntington's disease (HD) patients and 157 non-demented control (Con) individuals, 214 co-DEGs were identified. Those co-DEGs were filtered into 2 different interaction network complexes, representing immune-related genes and synapserelated genes. The WGCNA results identified five modules: yellow, blue, green, turquoise, and brown. Most of the co-DEGs were clustered into the turquoise module and blue module, which respectively regulated synapse-related function and immune-related function. In addition, human microRNA-4433 (hsa-miR-4443), which targets 18 co-DEGs, was the only 1 co-up-regulated microRNA identified in the cortex of neurodegenerative diseases. CONCLUSION 214 DEGs and 5 modules regulate the immune-related and synapse-related function of the cortex in neurodegenerative diseases. Hsa-miR-4443 targets 18 co-DEGs and may be a potential molecular mechanism in neurodegenerative diseases' occurrence and development.
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Affiliation(s)
- Xing Ge
- Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China;
| | - Tingting Yao
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China;
| | - Chaoran Zhang
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China;
| | - Qingqing Wang
- Department of Nephrology, Xuzhou Children’s Hospital, Xuzhou, Jiangsu 221000, China
| | - Xuxu Wang
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China;
| | - Li-Chun Xu
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China; ,Address correspondence to this author at the School of Public Health, Xuzhou Medical University, Xuzhou, 209 Tong-Shan Road, Xuzhou, Jiangsu, 221002, China; Tel: +86-516-83262650; Fax: +86-516-83262650; E-mail:
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13
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Imenez Silva PH, Wagner CA. Physiological relevance of proton-activated GPCRs. Pflugers Arch 2022; 474:487-504. [PMID: 35247105 PMCID: PMC8993716 DOI: 10.1007/s00424-022-02671-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 12/12/2022]
Abstract
The detection of H+ concentration variations in the extracellular milieu is accomplished by a series of specialized and non-specialized pH-sensing mechanisms. The proton-activated G protein-coupled receptors (GPCRs) GPR4 (Gpr4), TDAG8 (Gpr65), and OGR1 (Gpr68) form a subfamily of proteins capable of triggering intracellular signaling in response to alterations in extracellular pH around physiological values, i.e., in the range between pH 7.5 and 6.5. Expression of these receptors is widespread for GPR4 and OGR1 with particularly high levels in endothelial cells and vascular smooth muscle cells, respectively, while expression of TDAG8 appears to be more restricted to the immune compartment. These receptors have been linked to several well-studied pH-dependent physiological activities including central control of respiration, renal adaption to changes in acid-base status, secretion of insulin and peripheral responsiveness to insulin, mechanosensation, and cellular chemotaxis. Their role in pathological processes such as the genesis and progression of several inflammatory diseases (asthma, inflammatory bowel disease), and tumor cell metabolism and invasiveness, is increasingly receiving more attention and makes these receptors novel and interesting targets for therapy. In this review, we cover the role of these receptors in physiological processes and will briefly discuss some implications for disease processes.
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Affiliation(s)
- Pedro H Imenez Silva
- Institute of Physiology, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland.
- National Center of Competence in Research NCCR Kidney.CH, Zurich, Switzerland.
| | - Carsten A Wagner
- Institute of Physiology, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland.
- National Center of Competence in Research NCCR Kidney.CH, Zurich, Switzerland.
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