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Luo M, He N, Xu Q, Wen Z, Wang Z, Zhao J, Liu Y. Roles of prostaglandins in immunosuppression. Clin Immunol 2024; 265:110298. [PMID: 38909972 DOI: 10.1016/j.clim.2024.110298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/07/2024] [Accepted: 06/21/2024] [Indexed: 06/25/2024]
Abstract
Prostaglandins (PGs) play a crucial and multifaceted role in various physiological processes such as intercellular signaling, inflammation regulation, neurotransmission, vasodilation, vasoconstriction, and reproductive functions. The diversity and biological significance of these effects are contingent upon the specific types or subtypes of PGs, with each PG playing a crucial role in distinct physiological and pathological processes. Particularly within the immune system, PGs are essential in modulating the function of immune cells and the magnitude and orientation of immune responses. Hence, a comprehensive comprehension of the functions PG signaling pathways in immunosuppressive regulation holds substantial clinical relevance for disease prevention and treatment strategies. The manuscript provides a review of recent developments in PG signaling in immunosuppressive regulation. Furthermore, the potential clinical applications of PGs in immunosuppression are also discussed. While research into the immunosuppressive effects of PGs required further exploration, targeted therapies against their immunosuppressive pathways might open new avenues for disease prevention and treatment.
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Affiliation(s)
- Minjie Luo
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, Hunan, China; Sepsis Translational Medicine Key Lab of Hunan Province, Changsha 410008, Hunan, China; National Medicine Functional Experimental Teaching Center, Changsha 410008, Hunan, China
| | - Nina He
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, Hunan, China; Sepsis Translational Medicine Key Lab of Hunan Province, Changsha 410008, Hunan, China; National Medicine Functional Experimental Teaching Center, Changsha 410008, Hunan, China
| | - Qing Xu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, Hunan, China; Sepsis Translational Medicine Key Lab of Hunan Province, Changsha 410008, Hunan, China; National Medicine Functional Experimental Teaching Center, Changsha 410008, Hunan, China
| | - Zhongchi Wen
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, Hunan, China; Sepsis Translational Medicine Key Lab of Hunan Province, Changsha 410008, Hunan, China; National Medicine Functional Experimental Teaching Center, Changsha 410008, Hunan, China
| | - Ziqin Wang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, Hunan, China; Sepsis Translational Medicine Key Lab of Hunan Province, Changsha 410008, Hunan, China; National Medicine Functional Experimental Teaching Center, Changsha 410008, Hunan, China
| | - Jie Zhao
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, Hunan, China; Sepsis Translational Medicine Key Lab of Hunan Province, Changsha 410008, Hunan, China; National Medicine Functional Experimental Teaching Center, Changsha 410008, Hunan, China.
| | - Ying Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, Hunan, China; Sepsis Translational Medicine Key Lab of Hunan Province, Changsha 410008, Hunan, China; National Medicine Functional Experimental Teaching Center, Changsha 410008, Hunan, China.
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Qiang E, Xu H. PGE 2 synthesis and signaling in the liver physiology and pathophysiology: An update. Prostaglandins Other Lipid Mediat 2024; 174:106875. [PMID: 39019102 DOI: 10.1016/j.prostaglandins.2024.106875] [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: 06/07/2024] [Revised: 07/12/2024] [Accepted: 07/13/2024] [Indexed: 07/19/2024]
Abstract
The liver plays a central role in systemic metabolism and drug degradation. However, it is highly susceptible to damage due to various factors, including metabolic imbalances, excessive alcohol consumption, viral infections, and drug influences. These factors often result in conditions such as fatty liver, hepatitis, and acute or chronic liver injury. Failure to address these injuries could promptly lead to the development of liver cirrhosis and potentially hepatocellular carcinoma (HCC). Prostaglandin E2 (PGE2) is a metabolite of arachidonic acid that belongs to the class of polyunsaturated fatty acids (PUFA) and is synthesized via the cyclooxygenase (COX) pathway. By binding to its G protein coupled receptors (i.e., EP1, EP2, EP3 and EP4), PGE2 has a wide range of physiological and pathophysiology effects, including pain, inflammation, fever, cardiovascular homeostasis, etc. Recently, emerging studies showed that PGE2 plays an indispensable role in liver health and disease. This review focus on the research progress of the role of PGE2 synthase and its receptors in liver physiological and pathophysiological processes and discuss the possibility of developing liver protective drugs targeting the COXs/PGESs/PGE2/EPs axis.
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Affiliation(s)
- Erjiao Qiang
- Department of Pathology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, China
| | - Hu Xu
- Health Science Center, East China Normal University, Shanghai 200241, China.
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Lim HW, Kim HJ, Jeon CY, Lee Y, Kim M, Kim J, Kim SR, Lee S, Lim DC, Park HD, Park BC, Shin DW. Hair Growth Promoting Effects of 15-Hydroxyprostaglandin Dehydrogenase Inhibitor in Human Follicle Dermal Papilla Cells. Int J Mol Sci 2024; 25:7485. [PMID: 39000592 PMCID: PMC11242524 DOI: 10.3390/ijms25137485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 06/29/2024] [Accepted: 07/03/2024] [Indexed: 07/16/2024] Open
Abstract
Prostaglandin E2 (PGE2) is known to be effective in regenerating tissues, and bimatoprost, an analog of PGF2α, has been approved by the FDA as an eyelash growth promoter and has been proven effective in human hair follicles. Thus, to enhance PGE2 levels while improving hair loss, we found dihydroisoquinolinone piperidinylcarboxy pyrazolopyridine (DPP), an inhibitor of 15-hydroxyprostaglandin dehydrogenase (15-PGDH), using DeepZema®, an AI-based drug development program. Here, we investigated whether DPP improved hair loss in human follicle dermal papilla cells (HFDPCs) damaged by dihydrotestosterone (DHT), which causes hair loss. We found that DPP enhanced wound healing and the expression level of alkaline phosphatase in DHT-damaged HFDPCs. We observed that DPP significantly down-regulated the generation of reactive oxygen species caused by DHT. DPP recovered the mitochondrial membrane potential in DHT-damaged HFDPCs. We demonstrated that DPP significantly increased the phosphorylation levels of the AKT/ERK and activated Wnt signaling pathways in DHT-damaged HFDPCs. We also revealed that DPP significantly enhanced the size of the three-dimensional spheroid in DHT-damaged HFDPCs and increased hair growth in ex vivo human hair follicle organ culture. These data suggest that DPP exhibits beneficial effects on DHT-damaged HFDPCs and can be utilized as a promising agent for improving hair loss.
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Affiliation(s)
- Hye Won Lim
- Research Institute for Biomedical and Health Science, Konkuk University, Chungju 27478, Chungcheongbuk-do, Republic of Korea; (H.W.L.); (C.Y.J.); (M.K.); (J.K.)
| | - Hak Joong Kim
- Innovo Therapeutics Inc., 507, Mapo-daero 38, Mapo-gu, Seoul 04174, Republic of Korea; (H.J.K.); (Y.L.); (S.L.); (D.C.L.); (H.D.P.)
| | - Chae Young Jeon
- Research Institute for Biomedical and Health Science, Konkuk University, Chungju 27478, Chungcheongbuk-do, Republic of Korea; (H.W.L.); (C.Y.J.); (M.K.); (J.K.)
| | - Yurim Lee
- Innovo Therapeutics Inc., 507, Mapo-daero 38, Mapo-gu, Seoul 04174, Republic of Korea; (H.J.K.); (Y.L.); (S.L.); (D.C.L.); (H.D.P.)
| | - Mujun Kim
- Research Institute for Biomedical and Health Science, Konkuk University, Chungju 27478, Chungcheongbuk-do, Republic of Korea; (H.W.L.); (C.Y.J.); (M.K.); (J.K.)
| | - Jinsick Kim
- Research Institute for Biomedical and Health Science, Konkuk University, Chungju 27478, Chungcheongbuk-do, Republic of Korea; (H.W.L.); (C.Y.J.); (M.K.); (J.K.)
| | - Soon Re Kim
- Basic and Clinical Hair Institute, Dankook University, 201, Manghyang-ro, Dongnam-gu, Cheonan-si 31116, Chungcheongnam-do, Republic of Korea; (S.R.K.); (B.C.P.)
| | - Sanghwa Lee
- Innovo Therapeutics Inc., 507, Mapo-daero 38, Mapo-gu, Seoul 04174, Republic of Korea; (H.J.K.); (Y.L.); (S.L.); (D.C.L.); (H.D.P.)
| | - Dong Chul Lim
- Innovo Therapeutics Inc., 507, Mapo-daero 38, Mapo-gu, Seoul 04174, Republic of Korea; (H.J.K.); (Y.L.); (S.L.); (D.C.L.); (H.D.P.)
| | - Hee Dong Park
- Innovo Therapeutics Inc., 507, Mapo-daero 38, Mapo-gu, Seoul 04174, Republic of Korea; (H.J.K.); (Y.L.); (S.L.); (D.C.L.); (H.D.P.)
| | - Byung Cheol Park
- Basic and Clinical Hair Institute, Dankook University, 201, Manghyang-ro, Dongnam-gu, Cheonan-si 31116, Chungcheongnam-do, Republic of Korea; (S.R.K.); (B.C.P.)
- Department of Dermatology, Dankook University Hospital, 201, Manghyang-ro, Dongnam-gu, Cheonan-si 31116, Chungcheongnam-do, Republic of Korea
| | - Dong Wook Shin
- Research Institute for Biomedical and Health Science, Konkuk University, Chungju 27478, Chungcheongbuk-do, Republic of Korea; (H.W.L.); (C.Y.J.); (M.K.); (J.K.)
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Zeng ML, Xu W. A Narrative Review of the Published Pre-Clinical Evaluations: Multiple Effects of Arachidonic Acid, its Metabolic Enzymes and Metabolites in Epilepsy. Mol Neurobiol 2024:10.1007/s12035-024-04274-6. [PMID: 38842673 DOI: 10.1007/s12035-024-04274-6] [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: 12/11/2023] [Accepted: 05/29/2024] [Indexed: 06/07/2024]
Abstract
Arachidonic acid (AA), an important polyunsaturated fatty acid in the brain, is hydrolyzed by a direct action of phospholipase A2 (PLA2) or through the combined action of phospholipase C and diacylglycerol lipase, and released into the cytoplasm. Various derivatives of AA can be synthesized mainly through the cyclooxygenase (COX), lipoxygenase (LOX) and cytochrome P450 (P450) enzyme pathways. AA and its metabolic enzymes and metabolites play important roles in a variety of neurophysiological activities. The abnormal metabolites and their catalytic enzymes in the AA cascade are related to the pathogenesis of various central nervous system (CNS) diseases, including epilepsy. Here, we systematically reviewed literatures in PubMed about the latest randomized controlled trials, animal studies and clinical studies concerning the known features of AA, its metabolic enzymes and metabolites, and their roles in epilepsy. The exclusion criteria include non-original studies and articles not in English.
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Affiliation(s)
- Meng-Liu Zeng
- Medical Science Research Center, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
| | - Wei Xu
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
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El-Ansary A, Alfawaz HA, Bacha AB, Al-Ayadhi LY. Combining Anti-Mitochondrial Antibodies, Anti-Histone, and PLA2/COX Biomarkers to Increase Their Diagnostic Accuracy for Autism Spectrum Disorders. Brain Sci 2024; 14:576. [PMID: 38928576 PMCID: PMC11201962 DOI: 10.3390/brainsci14060576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 05/31/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by impairments in social interaction and restricted and repetitive behaviors. Oxidative stress may be a critical link between mitochondrial dysfunction and ASD as reactive oxygen species (ROS) generated from pro-oxidant environmental toxicants and activated immune cells can result in mitochondrial failure. Recently, mitochondrial dysfunction, autoimmunity, and abnormal lipid mediators have been identified in multiple investigations as an acknowledged etiological mechanism of ASD that can be targeted for therapeutic intervention. METHODS The relationship between lipid mediator markers linked to inflammation induction, such as phospholipase A2/cyclooxygenase-2 (PLA2/Cox-2), and the mitochondrial dysfunction marker anti-mitochondrial antibodies (AMA-M2), and anti-histone autoantibodies in the etiology of ASD was investigated in this study using combined receiver operating characteristic (ROC) curve analyses. This study also sought to identify the linear combination for a given set of markers that optimizes the partial area under ROC curves. This study included 40 age- and sex-matched controls and 40 ASD youngsters. The plasma of both groups was tested for PLA2/COX-2, AMA-M2, and anti-histone autoantibodies' levels using ELISA kits. ROC curves and logistic regression models were used in the statistical analysis. RESULTS Using the integrated ROC curve analysis, a notable rise in the area under the curve was noticed. Additionally, the combined markers had markedly improved specificity and sensitivity. CONCLUSIONS The current study suggested that measuring the predictive value of selected biomarkers related to mitochondrial dysfunction, autoimmunity, and lipid metabolism in children with ASD using a ROC curve analysis could lead to a better understanding of the etiological mechanism of ASD as well as its relationship with metabolism.
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Affiliation(s)
- Afaf El-Ansary
- Autism Center, Lotus Holistic Alternative Medical Center, Abu Dhabi P.O. Box 110281, United Arab Emirates
| | - Hanan A. Alfawaz
- Department of Food Science and Nutrition, College of Food & Agriculture Sciences, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia;
| | - Abir Ben Bacha
- Department of Biochemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia;
| | - Laila Y. Al-Ayadhi
- Department of Physiology, Faculty of Medicine, King Saud University, P.O. Box 2925, Riyadh 11461, Saudi Arabia
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Gao Z, Guo X, Sun Z, Wu S, Wang Q, Huang Q, Bai W, Kou C. Copy number deletion of PLA2G4A affects the susceptibility and clinical phenotypes of schizophrenia. SCHIZOPHRENIA (HEIDELBERG, GERMANY) 2024; 10:55. [PMID: 38816399 PMCID: PMC11139948 DOI: 10.1038/s41537-024-00474-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 05/17/2024] [Indexed: 06/01/2024]
Abstract
Phospholipase A2(PLA2) superfamily is recognized as being involved in the pathogenesis of schizophrenia by affecting lipid homeostasis in cell membranes. We hypothesized that PLA2 gene copy number variation (CNV) may affect PLA2 enzyme expression and be associated with schizophrenia risk. This study indicated that in the discovery stage, an increased copy number of PLA2G6 and the deletion of PLA2G3, PLA2G4A, PLA2G4F and PLA2G12F was associated with increased risk of schizophrenia. CNV segments involving six PLA2 genes were detected in publicly available datasets, including two deletion segments specific to the PLA2G4A gene. The relationship between the deletion of PLA2G4A and susceptibility to schizophrenia was then reaffirmed in the validation group of 806 individuals. There was a significant correlation between PLA2G4A deletion and the symptoms of poverty of thought in male patients and erotomanic delusion in females. Furthermore, ELISA results demonstrate a significant decrease in peripheral blood cytosolic PLA2(cPLA2) levels in patients with the PLA2G4A deletion genotype compared to those with normal and copy number duplicate genotypes. These data suggest that the functional copy number deletion in the PLA2G4A gene is associated with the risk of schizophrenia and clinical phenotypes by reducing the expression of cPLA2, which may be an indicator of susceptibility to schizophrenia.
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Affiliation(s)
- Zibo Gao
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Xinru Guo
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Zhouyang Sun
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Songyu Wu
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Qianyi Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Qianlong Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Wei Bai
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, Jilin, China.
| | - Changgui Kou
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, Jilin, China.
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Sosa-Acosta P, Quiñones-Vega M, Guedes JDS, Rocha D, Guida L, Vasconcelos Z, Nogueira FCS, Domont GB. Multiomics Approach Reveals Serum Biomarker Candidates for Congenital Zika Syndrome. J Proteome Res 2024; 23:1200-1220. [PMID: 38390744 DOI: 10.1021/acs.jproteome.3c00677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
The Zika virus (ZIKV) can be vertically transmitted, causing congenital Zika syndrome (CZS) in fetuses. ZIKV infection in early gestational trimesters increases the chances of developing CZS. This syndrome involves several pathologies with a complex diagnosis. In this work, we aim to identify biological processes and molecular pathways related to CZS and propose a series of putative protein and metabolite biomarkers for CZS prognosis in early pregnancy trimesters. We analyzed serum samples of healthy pregnant women and ZIKV-infected pregnant women bearing nonmicrocephalic and microcephalic fetuses. A total of 1090 proteins and 512 metabolites were identified by bottom-up proteomics and untargeted metabolomics, respectively. Univariate and multivariate statistical approaches were applied to find CZS differentially abundant proteins (DAP) and metabolites (DAM). Enrichment analysis (i.e., biological processes and molecular pathways) of the DAP and the DAM allowed us to identify the ECM organization and proteoglycans, amino acid metabolism, and arachidonic acid metabolism as CZS signatures. Five proteins and four metabolites were selected as CZS biomarker candidates. Serum multiomics analysis led us to propose nine putative biomarkers for CZS prognosis with high sensitivity and specificity.
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Affiliation(s)
- Patricia Sosa-Acosta
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
- Laboratory of Proteomics (LabProt), LADETEC, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-598, Brazil
- Precision Medicine Research Center, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Mauricio Quiñones-Vega
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
- Laboratory of Proteomics (LabProt), LADETEC, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-598, Brazil
- Precision Medicine Research Center, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Jéssica de S Guedes
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
- Laboratory of Proteomics (LabProt), LADETEC, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-598, Brazil
- Precision Medicine Research Center, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Danielle Rocha
- Fernandes Figueira Institute, Fiocruz, Rio de Janeiro 22250-020, Brazil
| | - Letícia Guida
- Fernandes Figueira Institute, Fiocruz, Rio de Janeiro 22250-020, Brazil
| | | | - Fábio C S Nogueira
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
- Laboratory of Proteomics (LabProt), LADETEC, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-598, Brazil
- Precision Medicine Research Center, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Gilberto B Domont
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
- Precision Medicine Research Center, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
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Hamilton HL, Kinscherf NA, Balmer G, Bresque M, Salamat SM, Vargas MR, Pehar M. FABP7 drives an inflammatory response in human astrocytes and is upregulated in Alzheimer's disease. GeroScience 2024; 46:1607-1625. [PMID: 37688656 PMCID: PMC10828232 DOI: 10.1007/s11357-023-00916-0] [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: 04/03/2023] [Accepted: 08/15/2023] [Indexed: 09/11/2023] Open
Abstract
Alzheimer's disease (AD), the most common cause of dementia in the elderly, is characterized by the accumulation of intracellular neurofibrillary tangles, extracellular amyloid plaques, and neuroinflammation. In partnership with microglial cells, astrocytes are key players in the regulation of neuroinflammation. Fatty acid binding protein 7 (FABP7) belongs to a family of conserved proteins that regulate lipid metabolism, energy homeostasis, and inflammation. FABP7 expression is largely restricted to astrocytes and radial glia-like cells in the adult central nervous system. We observed that treatment of primary hippocampal astrocyte cultures with amyloid β fragment 25-35 (Aβ25-35) induces FABP7 upregulation. In addition, FABP7 expression is upregulated in the brain of APP/PS1 mice, a widely used AD mouse model. Co-immunostaining with specific astrocyte markers revealed increased FABP7 expression in astrocytes. Moreover, astrocytes surrounding amyloid plaques displayed increased FABP7 staining when compared to non-plaque-associated astrocytes. A similar result was obtained in the brain of AD patients. Whole transcriptome RNA sequencing analysis of human astrocytes differentiated from induced pluripotent stem cells (i-astrocytes) overexpressing FABP7 identified 500 transcripts with at least a 2-fold change in expression. Gene Ontology enrichment analysis identified (i) positive regulation of cytokine production and (ii) inflammatory response as the top two statistically significant overrepresented biological processes. We confirmed that wild-type FABP7 overexpression induces an NF-κB-driven inflammatory response in human i-astrocytes. On the other hand, the expression of a ligand-binding impaired mutant FABP7 did not induce NF-κB activation. Together, our results suggest that the upregulation of FABP7 in astrocytes could contribute to the neuroinflammation observed in AD.
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Affiliation(s)
- Haylee L Hamilton
- Division of Geriatrics and Gerontology, Department of Medicine, University of Wisconsin-Madison, 600 Highland Avenue, CSC K6/447, Madison, WI, 53792, USA
- Neuroscience Training Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Noah A Kinscherf
- Division of Geriatrics and Gerontology, Department of Medicine, University of Wisconsin-Madison, 600 Highland Avenue, CSC K6/447, Madison, WI, 53792, USA
| | - Garrett Balmer
- Department of Neurology, University of Wisconsin-Madison, Madison, WI, USA
| | - Mariana Bresque
- Department of Neurology, University of Wisconsin-Madison, Madison, WI, USA
| | - Shahriar M Salamat
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, USA
- Department of Neurological Surgery, University of Wisconsin Madison, Madison, WI, USA
| | - Marcelo R Vargas
- Department of Neurology, University of Wisconsin-Madison, Madison, WI, USA
| | - Mariana Pehar
- Division of Geriatrics and Gerontology, Department of Medicine, University of Wisconsin-Madison, 600 Highland Avenue, CSC K6/447, Madison, WI, 53792, USA.
- Geriatric Research Education Clinical Center, William S. Middleton Memorial Veterans Hospital, Madison, WI, USA.
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Zhou Y, Han X, Mu Q, Xing L, Wu Y, Li C, Liu Y, Wang F. The effect of the interaction of sleep onset latency and age on ischemic stroke severity via inflammatory chemokines. Front Neurol 2024; 15:1323878. [PMID: 38434201 PMCID: PMC10906267 DOI: 10.3389/fneur.2024.1323878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/07/2024] [Indexed: 03/05/2024] Open
Abstract
Objective Prolonged sleep onset latency (PSOL) and age have been linked to ischemic stroke (IS) severity and the production of chemokines and inflammation, both of which contribute to IS development. This study aimed to explore the relationship between chemokines, inflammation, and the interplay between sleep onset latency (SOL) and age in influencing stroke severity. Methods A cohort of 281 participants with mild to moderate IS was enrolled. Stroke severity was assessed using the National Institutes of Health Stroke Scale (NIHSS), and SOL was recorded. Serum levels of macrophage inflammatory protein-1alpha (MIP-1α), macrophage inflammatory protein-1beta (MIP-1β), monocyte chemoattractant protein-1 (MCP-1), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α) were measured. Results NIHSS scores of middle-aged participants with PSOL were significantly higher than those with normal sleep onset latency (NSOL) (p = 0.046). This difference was also observed when compared to both the elderly with NSOL (p = 0.022), and PSOL (p < 0.001). Among middle-aged adults with PSOL, MIP-1β exhibited a protective effect on NIHSS scores (β = -0.01, t = -2.11, p = 0.039, R2 = 0.13). MIP-1α demonstrated a protective effect on NIHSS scores in the elderly with NSOL (β = -0.03, t = -2.27, p = 0.027, R2 = 0.12). Conclusion This study reveals a hitherto undocumented association between PSOL and IS severity, along with the potential protective effects of MIP-1β in mitigating stroke severity, especially among middle-aged patients.
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Affiliation(s)
- Yuyu Zhou
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
- Medical Neurobiology Lab, Inner Mongolia Medical University, Huhhot, China
| | - Xiaoli Han
- Clinical Nutrition Department, Friendship Hospital of Urumqi, Urumqi, China
| | - Qingshuang Mu
- Xinjiang Key Laboratory of Neurological Disorder Research, The Second Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Lifei Xing
- Department of Neurology, Sinopharm North Hospital, Baotou, China
| | - Yan Wu
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Cunbao Li
- Medical Neurobiology Lab, Inner Mongolia Medical University, Huhhot, China
| | - Yanlong Liu
- School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Fan Wang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
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10
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Zuo H, Peng L, Li W, Wang Y, Du X, Zou X, Dong Z, Yi L, Yin H, Quan F, Cheng O. Assessment of bidirectional relationships between multiple sclerosis and epilepsy: A two-sample Mendelian randomization study. Mult Scler Relat Disord 2024; 81:105148. [PMID: 38006848 DOI: 10.1016/j.msard.2023.105148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/18/2023] [Accepted: 11/19/2023] [Indexed: 11/27/2023]
Abstract
BACKGROUND AND OBJECTIVE Epidemiological studies indicate that multiple sclerosis (MS) is associated with epilepsy. However, the causality and directionality of this association remain under-elucidated. This study aimed to reveal the causality between MS and epilepsy. METHODS A two-sample Mendelian randomization (MR) analysis was performed by using summarized statistics derived from large genome-wide association studies of MS and epilepsy. We used the inverse variance weighted method as the primary approach, and then four other MR methods to bidirectionally evaluate the causality of the association between MS and epilepsy. Additional sensitivity analyses were performed to measure the robustness of the findings. RESULTS Genetically predicted MS was positively correlated with developing all epilepsy [odds ratio (OR) = 1.027 (1.003-1.051), P = 0.028] and generalized epilepsy [OR = 1.050 (1.008-1.094), P = 0.019]. In the reverse MR analysis, all epilepsy [OR = 1.310 (1.112-1.543), P = 0.001], generalized epilepsy [OR = 1.173 (1.010-1.363), P = 0.037], and focal epilepsy [OR = 1.264 (1.069-1.494), P = 0.006] elevated the risk of developing MS. The result remained robust and congruous across all sensitivity analyses conducted. CONCLUSIONS MS is potentially associated with a higher risk of developing epilepsy. Furthermore, epilepsy may be a causal determinant of MS risk. These findings may further the understanding of the interaction of the two conditions.
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Affiliation(s)
- Hongzhou Zuo
- Department of Neurology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Li Peng
- Department of Neurology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China; Department of Neurology, Youyang County People's Hospital, Chongqing 409899, China
| | - Wei Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yuzhu Wang
- Department of Neurology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Xinyi Du
- Department of Neurology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Xiaoya Zou
- Department of Neurology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Zhaoying Dong
- Department of Neurology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Li Yi
- Department of Neurology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Huimei Yin
- Department of Neurology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Fengying Quan
- Department of Neurology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China.
| | - Oumei Cheng
- Department of Neurology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China.
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11
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Ni H, Guo Z, Wu Y, Wang J, Yang Y, Zhu Z, Wang D. The crucial role that hippocampus Cyclooxygenase-2 plays in memory. Eur J Neurosci 2023; 58:4123-4136. [PMID: 37867375 DOI: 10.1111/ejn.16165] [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: 10/31/2022] [Revised: 09/19/2023] [Accepted: 09/26/2023] [Indexed: 10/24/2023]
Abstract
It is generally accepted that Cyclooxygenase-2 (COX-2) is activated to cause inflammation. However, COX-2 is also constitutively expressed at the postsynaptic dendrites and excitatory terminals of the cortical and spinal cord neurons. Although some evidence suggests that COX-2 release during neuronal signalling may be pivotal for regulating the function of memory, the significance of constitutively expressed COX-2 in neuron is still unclear. This research aims to discover the role of COX-2 in memory beyond neuroinflammation and to determine whether the inhibition of COX-2 can cause cognitive dysfunction by influencing dendritic plasticity and its underlying mechanism. We found COX-2 gene knockout (KO) could significantly impact the learning and memory ability, cause neuronal structure disorder and influence gamma oscillations. These might be mediated by the inhibition of prostaglandin (PG) E2/cAMP pathway and phosphorylated protein kinase A (p-PKA)-phosphorylated cAMP response element binding protein (p-CREB)-brain derived neurotrophic factor (BDNF) axis. It suggested COX-2 might play a critical role in learning, regulating neuronal structure and gamma oscillations in the hippocampus CA1 by regulating COX-2/BDNF signalling pathway.
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Affiliation(s)
- Hong Ni
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Department of Gastroenterology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai, China
| | - Zhongzhao Guo
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yue Wu
- Department of Gastroenterology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai, China
| | - Jie Wang
- Department of Peripheral Vascular Surgery, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yang Yang
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zilu Zhu
- School of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Deheng Wang
- School of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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12
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Wang R, Sun Y, Wang M, Li H, Liu S, Liu Z. Therapeutic effect of Eleutherococcus senticosus (Rupr. & Maxim.) Maxim. leaves on ischemic stroke via the microbiota-gut-brain axis. Phytother Res 2023; 37:4801-4818. [PMID: 37518502 DOI: 10.1002/ptr.7947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023]
Abstract
Eleutherococcus senticosus (Rupr. & Maxim.) Maxim. leaves (ESL) are widely used to treat ischemic stroke (IS); however, the specific mechanism remains unclear. The microbiota-gut-brain axis plays a critical role in IS and has become a potential therapeutic target. This study aimed to reveal and verify the therapeutic effect of ESL on IS through the microbiota-gut-brain axis. Ultra-high-performance liquid chromatography coupled with mass spectrometry-based untargeted/targeted metabolomics combined with 16S rRNA microbiota sequencing strategy were used to investigate the regulatory effect of ESL on the metabolism and intestinal microenvironment after IS. Lactobacillus reuteri and Clostridium butyricum were used to treat rats with IS to verify that elevated levels of probiotics are key factors in the therapeutic effect of ESL. The results showed that IS significantly altered the accumulation of 41 biomarkers, while ESL restored their concentrations back to normal. Moreover, ESL alleviated the dysbiosis of gut microbiota brought on by IS, by reducing the abundance of pathogens and increasing the abundance of probiotics (e.g., Lactobacillus reuteri and Clostridium butyricum); this could reduce post-stroke injury, thereby having a certain protective effect on IS. This study reveals that ESL plays an important role in treating IS through the microbiota-gut-brain axis, maintaining metabolic homeostasis in vivo.
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Affiliation(s)
- Rongjin Wang
- School of Pharmaceutical Sciences, Jilin University, Changchun, China
| | - Yuzhen Sun
- School of Pharmaceutical Sciences, Jilin University, Changchun, China
| | - Meiyuan Wang
- School of Pharmaceutical Sciences, Jilin University, Changchun, China
| | - Hanlin Li
- School of Pharmaceutical Sciences, Jilin University, Changchun, China
| | - Shu Liu
- National Center of Mass Spectrometry in Changchun & Jilin Provincial Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Zhongying Liu
- School of Pharmaceutical Sciences, Jilin University, Changchun, China
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13
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Campbell GR, Rawat P, To RK, Spector SA. HIV-1 Tat Upregulates TREM1 Expression in Human Microglia. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:429-442. [PMID: 37326481 PMCID: PMC10352590 DOI: 10.4049/jimmunol.2300152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 05/30/2023] [Indexed: 06/17/2023]
Abstract
Because microglia are a reservoir for HIV and are resistant to the cytopathic effects of HIV infection, they are a roadblock for any HIV cure strategy. We have previously identified that triggering receptor expressed on myeloid cells 1 (TREM1) plays a key role in human macrophage resistance to HIV-mediated cytopathogenesis. In this article, we show that HIV-infected human microglia express increased levels of TREM1 and are resistant to HIV-induced apoptosis. Moreover, upon genetic inhibition of TREM1, HIV-infected microglia undergo cell death in the absence of increased viral or proinflammatory cytokine expression or the targeting of uninfected cells. We also show that the expression of TREM1 is mediated by HIV Tat through a TLR4, TICAM1, PG-endoperoxide synthase 2, PGE synthase, and PGE2-dependent manner. These findings highlight the potential of TREM1 as a therapeutic target to eradicate HIV-infected microglia without inducing a proinflammatory response.
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Affiliation(s)
- Grant R. Campbell
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD
| | - Pratima Rawat
- Division of Infectious Diseases, Department of Pediatrics, University of California San Diego, La Jolla, CA
| | - Rachel K. To
- Division of Infectious Diseases, Department of Pediatrics, University of California San Diego, La Jolla, CA
| | - Stephen A. Spector
- Division of Infectious Diseases, Department of Pediatrics, University of California San Diego, La Jolla, CA
- Rady Children’s Hospital, San Diego, CA
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14
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Mushtaq U. EP1 receptor: Devil in emperors coat. J Cell Biochem 2023; 124:1105-1114. [PMID: 37450673 DOI: 10.1002/jcb.30436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 05/20/2023] [Accepted: 06/06/2023] [Indexed: 07/18/2023]
Abstract
EP1 receptor belongs to prostanoid receptors and is activated by prostaglandin E2. The receptor performs contrasting functions in central nervous system (CNS) and other tissues. Although the receptor is neurotoxic and proapoptotic in CNS, it has also been reported to act in an antiapoptotic manner by modulating cell survival, proliferation, invasion, and migration in different types of cancers. The receptor mediates its neurotoxic effects by increasing cytosolic Ca2+ levels, leading to the activation of its downstream target, protein kinase C, in different neurological disorders including Alzheimer's disease, Parkinson's disease, stroke, amyotrophic lateral sclerosis, and epilepsy. Antagonists ONO-8713, SC51089, and SC51322 against EP1 receptor ameliorate the neurotoxic effect by attenuating the neuroinflammation. The receptor also shows increased expression in different types of cancers and has been found to activate different signaling pathways, which lead to the development, progression, and metastasis of different cancers. The receptor stimulates the cell survival pathway by phosphorylating the AKT and PTEN (phosphatase and tensin homolog deleted on chromosome 10) signaling pathways. Although there are limited studies about this receptor and not a single clinical trial has been targeting the EP1 receptor for different neurological disorders or cancer, the receptor is appearing as a potential candidate for therapeutic targets. The aim of this article is to review the recent progress in understanding the pathogenic roles of EP1 receptors in different pathological conditions.
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Affiliation(s)
- Umar Mushtaq
- Department of Biotechnology, Central University of Kashmir, Ganderbal, India
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15
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Rocchi D, González JF, Martín-Cámara O, Perrone MG, Miciaccia M, Scilimati A, Decouty-Pérez C, Parada E, Egea J, Menéndez JC. m-Terphenylamines, Acting as Selective COX-1 Inhibitors, Block Microglia Inflammatory Response and Exert Neuroprotective Activity. Molecules 2023; 28:5374. [PMID: 37513247 PMCID: PMC10384011 DOI: 10.3390/molecules28145374] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/03/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
Inhibition of cyclooxygenase-2 (COX-2) has been extensively studied as an approach to reduce proinflammatory markers in acute brain diseases, but the anti-neuroinflammatory role of cyclooxygenase-1 (COX-1) inhibition has been rather neglected. We report that m-terphenylamine derivatives are selective COX-1 inhibitors, able to block microglia inflammatory response and elicit a neuroprotective effect. These compounds were synthesized via a three-component reaction of chalcones, β-ketoesters, and primary amines, followed by hydrolysis/decarboxylation of the ester group. Together with their synthetic intermediates and some urea derivatives, they were studied as inhibitors of COX-1 and COX-2. The m-terphenylamine derivatives, which were selective COX-1 inhibitors, were also analyzed for their ability to block microglia inflammatory and oxidative response. Compound 3b presented an interesting anti-inflammatory and neuroprotective profile by reducing nitrite release, ROS overproduction, and cell death in organotypic hippocampal cultures subjected to LPS. We thus show that COX-1 inhibition is a promising approach to provide enhanced neuroprotection against acute inflammatory processes, which are crucial in the development of a plethora of acute neurodegenerative injuries.
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Affiliation(s)
- Damiano Rocchi
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| | - Juan F González
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| | - Olmo Martín-Cámara
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| | - Maria Grazia Perrone
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari Aldo Moro, 70121 Bari, Italy
| | - Morena Miciaccia
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari Aldo Moro, 70121 Bari, Italy
| | - Antonio Scilimati
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari Aldo Moro, 70121 Bari, Italy
| | - Celine Decouty-Pérez
- Molecular Neuroinflammation and Neuronal Plasticity Research Laboratory, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria-Hospital Universitario de la Princesa, 28009 Madrid, Spain
| | - Esther Parada
- Molecular Neuroinflammation and Neuronal Plasticity Research Laboratory, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria-Hospital Universitario de la Princesa, 28009 Madrid, Spain
| | - Javier Egea
- Molecular Neuroinflammation and Neuronal Plasticity Research Laboratory, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria-Hospital Universitario de la Princesa, 28009 Madrid, Spain
| | - J Carlos Menéndez
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
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16
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Nango H, Tsuruta K, Miyagishi H, Aono Y, Saigusa T, Kosuge Y. Update on the pathological roles of prostaglandin E 2 in neurodegeneration in amyotrophic lateral sclerosis. Transl Neurodegener 2023; 12:32. [PMID: 37337289 DOI: 10.1186/s40035-023-00366-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 06/07/2023] [Indexed: 06/21/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease characterized by selective degeneration of upper and lower motor neurons. The pathogenesis of ALS remains largely unknown; however, inflammation of the spinal cord is a focus of ALS research and an important pathogenic process in ALS. Prostaglandin E2 (PGE2) is a major lipid mediator generated by the arachidonic-acid cascade and is abundant at inflammatory sites. PGE2 levels are increased in the postmortem spinal cords of ALS patients and in ALS model mice. Beneficial therapeutic effects have been obtained in ALS model mice using cyclooxygenase-2 inhibitors to inhibit the biosynthesis of PGE2, but the usefulness of this inhibitor has not yet been proven in clinical trials. In this review, we present current evidence on the involvement of PGE2 in the progression of ALS and discuss the potential of microsomal prostaglandin E synthase (mPGES) and the prostaglandin receptor E-prostanoid (EP) 2 as therapeutic targets for ALS. Signaling pathways involving prostaglandin receptors mediate toxic effects in the central nervous system. In some situations, however, the receptors mediate neuroprotective effects. Our recent studies demonstrated that levels of mPGES-1, which catalyzes the final step of PGE2 biosynthesis, are increased at the early-symptomatic stage in the spinal cords of transgenic ALS model mice carrying the G93A variant of superoxide dismutase-1. In addition, in an experimental motor-neuron model used in studies of ALS, PGE2 induces the production of reactive oxygen species and subsequent caspase-3-dependent cytotoxicity through activation of the EP2 receptor. Moreover, this PGE2-induced EP2 up-regulation in motor neurons plays a role in the death of motor neurons in ALS model mice. Further understanding of the pathophysiological role of PGE2 in neurodegeneration may provide new insights to guide the development of novel therapies for ALS.
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Affiliation(s)
- Hiroshi Nango
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-Shi, Chiba, 274-8555, Japan
| | - Komugi Tsuruta
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-Shi, Chiba, 274-8555, Japan
| | - Hiroko Miyagishi
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-Shi, Chiba, 274-8555, Japan
| | - Yuri Aono
- Department of Pharmacology, School of Dentistry at Matsudo, Nihon University, 2-870-1 Sakaechonishi, Matsudo-Shi, Chiba, 271-8587, Japan
| | - Tadashi Saigusa
- Department of Pharmacology, School of Dentistry at Matsudo, Nihon University, 2-870-1 Sakaechonishi, Matsudo-Shi, Chiba, 271-8587, Japan
| | - Yasuhiro Kosuge
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-Shi, Chiba, 274-8555, Japan.
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17
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Datta A, Saha C, Godse P, Sharma M, Sarmah D, Bhattacharya P. Neuroendocrine regulation in stroke. Trends Endocrinol Metab 2023; 34:260-277. [PMID: 36922255 DOI: 10.1016/j.tem.2023.02.005] [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: 01/27/2023] [Revised: 02/15/2023] [Accepted: 02/16/2023] [Indexed: 03/14/2023]
Abstract
The neuroendocrine system, a crosstalk between the central nervous system and endocrine glands, balances and controls hormone secretion and their functions. Neuroendocrine pathways and mechanisms often get dysregulated following stroke, leading to altered hormone secretion and aberrant receptor expression. Dysregulation of the hypothalamus-pituitary-thyroid (HPT) axis and hypothalamus-pituitary-adrenal (HPA) axis often led to severe stroke outcomes. Post-stroke complications such as cognitive impairment, depression, infection etc. are directly or indirectly influenced by the altered neuroendocrine activity that plays a crucial role in stroke vulnerability and susceptibility. Therefore, it is imperative to explore various neurohormonal inter-relationships in regulating stroke, its outcome, and prognosis. Here, we review the biology of different hormones associated with stroke and explore their regulation with a view towards prospective therapeutics.
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Affiliation(s)
- Aishika Datta
- Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar, Gujarat-382355, India
| | - Chandrima Saha
- Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar, Gujarat-382355, India
| | - Pratiksha Godse
- Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar, Gujarat-382355, India
| | - Muskaan Sharma
- Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar, Gujarat-382355, India
| | - Deepaneeta Sarmah
- Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar, Gujarat-382355, India
| | - Pallab Bhattacharya
- Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar, Gujarat-382355, India.
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18
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Martinez Ramirez CE, Ruiz-Pérez G, Stollenwerk TM, Behlke C, Doherty A, Hillard CJ. Endocannabinoid signaling in the central nervous system. Glia 2023; 71:5-35. [PMID: 36308424 PMCID: PMC10167744 DOI: 10.1002/glia.24280] [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: 02/01/2022] [Revised: 09/02/2022] [Accepted: 09/29/2022] [Indexed: 11/07/2022]
Abstract
It is hard to overestimate the influence of the endocannabinoid signaling (ECS) system on central nervous system (CNS) function. In the 40 years since cannabinoids were found to trigger specific cell signaling cascades, studies of the ECS system continue to cause amazement, surprise, and confusion! CB1 cannabinoid receptors are expressed widely in the CNS and regulate cell-cell communication via effects on the release of both neurotransmitters and gliotransmitters. CB2 cannabinoid receptors are difficult to detect in the CNS but seem to "punch above their weight" as compounds targeting these receptors have significant effects on inflammatory state and behavior. Positive and negative allosteric modulators for both receptors have been identified and examined in preclinical studies. Concentrations of the endocannabinoid ligands, N-arachidonoylethanolamine and 2-arachidonoylglycerol (2-AG), are regulated by a combination of enzymatic synthesis and degradation and inhibitors of these processes are available and making their way into clinical trials. Importantly, ECS regulates many essential brain functions, including regulation of reward, anxiety, inflammation, motor control, and cellular development. While the field is on the cusp of preclinical discoveries providing impactful clinical and therapeutic insights into many CNS disorders, there is still much to be learned about this remarkable and versatile modulatory system.
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Affiliation(s)
- César E Martinez Ramirez
- Neuroscience Research Center and Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Gonzalo Ruiz-Pérez
- Neuroscience Research Center and Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Todd M Stollenwerk
- Neuroscience Research Center and Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Christina Behlke
- Neuroscience Research Center and Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Ashley Doherty
- Neuroscience Research Center and Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Cecilia J Hillard
- Neuroscience Research Center and Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
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19
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Li X, Zhou JX, Qu YD, Kuang X. Сyclooxygenase-2 Inhibitor Parecoxib Reduces LPS-Induced Activation of BV2 Microglia Cells. Bull Exp Biol Med 2022; 174:210-215. [PMID: 36600038 DOI: 10.1007/s10517-023-05675-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Indexed: 01/06/2023]
Abstract
We studied the inhibitory effect of cyclooxygenase-2 inhibitor parecoxib on LPS-induced activation of BV2 microglia cells. The optimal dose of parecoxib (80 μmol/liter) was evaluated by the Cell Counting Kit-8. The cells were divided into the following groups: control (intact cells without treatment); LPS (treatment with 1 μg/ml LPS for 6 h), and experimental (pretreatment with 80 μmol/liter parecoxib for 24 h followed by incubation with 1 μg/ml LPS for 6 h). Cell morphology and proliferation and the expression of NLRP3, caspase-1, pro-caspase-1, and IL-1β were assessed. LPS induced significant morphological changes and decreased proliferation of primary BV2 cells in comparison with the control. These changes were prevented by parecoxib pretreatment. LPS significantly increased NLRP3 inflammatory vesicle activation and expression of NLRP3, caspase-1, pro-caspase-1, and IL-1β in comparison with the control group; pretreatment with parecoxib prevented all these changes. Our results suggest that pretreatment with parecoxib inhibited LPS-induced activation of BV2 microglial cells and probably inhibited NLRP3 inflammasome activation.
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Affiliation(s)
- X Li
- Department of Anesthesiology, the People's Hospital of Longhua Shenzhen, Affiliated Longhua People's Hospital, Southern Medicine University, Shenzhen, China.
| | - J X Zhou
- Shenzhen Second People's Hospital, Shenzhen, China
| | - Y D Qu
- Department of Anesthesiology, the People's Hospital of Longhua Shenzhen, Affiliated Longhua People's Hospital, Southern Medicine University, Shenzhen, China
| | - X Kuang
- Department of Anesthesiology, the People's Hospital of Longhua Shenzhen, Affiliated Longhua People's Hospital, Southern Medicine University, Shenzhen, China
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20
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Savitz J, Ford BN, Kuplicki R, Khalsa S, Teague TK, Paulus MP. Acute administration of ibuprofen increases serum concentration of the neuroprotective kynurenine pathway metabolite, kynurenic acid: a pilot randomized, placebo-controlled, crossover study. Psychopharmacology (Berl) 2022; 239:3919-3927. [PMID: 36271950 PMCID: PMC10040216 DOI: 10.1007/s00213-022-06263-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 10/10/2022] [Indexed: 11/25/2022]
Abstract
RATIONALE At least six different types of antidepressant treatments have been shown to either increase the neuroprotective kynurenine pathway (KP) metabolite, kynurenic acid (KynA), or decrease the neurotoxic KP metabolite, quinolinic acid (QA). Nonsteroidal anti-inflammatory drugs (NSAIDs) including ibuprofen have shown some efficacy in the treatment of depression but their effects on the KP have not been studied in humans. OBJECTIVES To evaluate the effect of ibuprofen on circulating KP metabolites. METHODS In a randomized, placebo-controlled, crossover study, 20 healthy adults (10 women) received a single oral dose of 200-mg ibuprofen, 600-mg ibuprofen, or placebo in a counterbalanced order (NCT02507219). Serum samples were drawn in the mid-afternoon, 5 h after ibuprofen/placebo administration. KP metabolites were measured blind to visit by tandem mass spectrometry. Data were analyzed with linear mixed effect models. The primary outcome was KynA/QA and the secondary outcome was KynA. RESULTS After Bonferroni correction, there was a significant effect of treatment on KynA/QA. The effect was driven by an increase in KynA concentration after the 600-mg dose but not the 200-mg dose relative to placebo (Cohen's d = 1.71). In contrast, both the 200-mg (d = 1.03) and 600-mg (d = 2.05) doses of ibuprofen decreased tryptophan concentrations relative to placebo. CONCLUSIONS Given its KynA-elevating effects, ibuprofen could have neuroprotective effects in the context of depression as well as other neuroinflammatory disorders that are characterized by a reduction in KynA.
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Affiliation(s)
- Jonathan Savitz
- Laureate Institute for Brain Research, Tulsa, OK, USA.
- Oxley College of Health Sciences, The University of Tulsa, Tulsa, OK, USA.
| | - Bart N Ford
- Department of Pharmacology & Physiology, Oklahoma State University Center for Health Sciences, Tulsa, OK, USA
| | | | - Sahib Khalsa
- Laureate Institute for Brain Research, Tulsa, OK, USA
- Oxley College of Health Sciences, The University of Tulsa, Tulsa, OK, USA
| | - T Kent Teague
- Department of Surgery, University of Oklahoma School of Community Medicine, Tulsa, OK, USA
- Department of Psychiatry, University of Oklahoma School of Community Medicine, Tulsa, OK, USA
- Department of Pharmaceutical Sciences, University of Oklahoma College of Pharmacy, Tulsa, OK, USA
| | - Martin P Paulus
- Laureate Institute for Brain Research, Tulsa, OK, USA
- Oxley College of Health Sciences, The University of Tulsa, Tulsa, OK, USA
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21
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Fijałkowski Ł, Skubiszewska M, Grześk G, Koech FK, Nowaczyk A. Acetylsalicylic Acid-Primus Inter Pares in Pharmacology. Molecules 2022; 27:molecules27238412. [PMID: 36500502 PMCID: PMC9738180 DOI: 10.3390/molecules27238412] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 11/24/2022] [Accepted: 11/27/2022] [Indexed: 12/05/2022] Open
Abstract
Acetylsalicylic acid (ASA) is one of the first drugs to be obtained by synthesis while being the most used. It has experienced the longest lasting commercial success and is considered the most popular drug of the modern era. ASA, originally used as an anti-inflammatory medication, nowadays is predominantly used as an antiplatelet agent for prophylaxis in cardiac patients. Many studies show that the benefits of using ASA far outweigh the potential risk of side effects. With particular emphasis on the possibility of ASA repositioning for new therapies, extending the indications for use beyond the diseases from the spectrum of atherosclerotic diseases, such as cancer, requires shifting the benefit-risk ratio, although very good, even more towards safety. Interesting activities consisting not only of changing the formulation but also modifying the drug molecule seem to be an important goal of the 21st century. ASA has become a milestone in two important fields: pharmacy and medicine. For a pharmacist, ASA is a long-used drug for which individual indications are practically maintained. For a doctor, acetylsalicylic acid is primarily an antiplatelet drug that saves millions of lives of patients with coronary heart disease or after a stroke. These facts do not exempt us from improving therapeutic methods based on ASA, the main goal of which is to reduce the risk of side effects, as well as to extend effectiveness. Modified acetylsalicylic acid molecules already seem to be a promising therapeutic option.
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Affiliation(s)
- Łukasz Fijałkowski
- Department of Pharmacometrics and Molecular Modeling, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 2 dr. A. Jurasza St., 85-094 Bydgoszcz, Poland
| | - Magdalena Skubiszewska
- Department of Pharmacometrics and Molecular Modeling, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 2 dr. A. Jurasza St., 85-094 Bydgoszcz, Poland
| | - Grzegorz Grześk
- Department of Cardiology and Clinical Pharmacology, Faculty of Health Sciences, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 75 Ujejskiego St., 85-168 Bydgoszcz, Poland
| | | | - Alicja Nowaczyk
- Department of Pharmacometrics and Molecular Modeling, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 2 dr. A. Jurasza St., 85-094 Bydgoszcz, Poland
- Correspondence: ; Tel.: +48-52-585-3904
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22
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Differential biochemical-inflammatory patterns in the astrocyte-neuron axis of the hippocampus and frontal cortex in Wistar rats with metabolic syndrome induced by high fat or carbohydrate diets. J Chem Neuroanat 2022; 126:102186. [DOI: 10.1016/j.jchemneu.2022.102186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 10/20/2022] [Accepted: 10/26/2022] [Indexed: 11/11/2022]
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23
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Shurin GV, Vats K, Kruglov O, Bunimovich YL, Shurin MR. Tumor-Induced T Cell Polarization by Schwann Cells. Cells 2022; 11:3541. [PMID: 36428970 PMCID: PMC9688729 DOI: 10.3390/cells11223541] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/03/2022] [Accepted: 11/05/2022] [Indexed: 11/12/2022] Open
Abstract
Nerve-cancer crosstalk resulting in either tumor neurogenesis or intratumoral neurodegeneration is critically controlled by Schwann cells, the principal glial cells of the peripheral nervous system. Though the direct stimulating effect of Schwann cells on malignant cell proliferation, motility, epithelial-mesenchymal transition, and the formation of metastases have been intensively investigated, the ability of Schwann cells to affect the effector and regulatory immune cells in the tumor environment is significantly less studied. Here, we demonstrated that tumor cells could stimulate Schwann cells to produce high levels of prostaglandin E, which could be blocked by COX-2 inhibitors. This effect was mediated by tumor-derived TGF-β as neutralization of this cytokine in the tumor-conditioned medium completely blocked the inducible prostaglandin E production by Schwann cells. Similar protective effects were also induced by the Schwann cell pretreatment with TGF-βR1/ALK4/5/7 and MAPK/ERK kinase inhibitors of the canonical and non-canonical TGF-β signaling pathways, respectively. Furthermore, prostaglandin E derived from tumor-activated Schwann cells blocked the proliferation of CD3/CD28-activated T cells and upregulated the expression of CD73 and PD-1 on both CD4+ and CD8+ T cells, suggesting T cell polarization to the exhausted phenotype. This new pathway of tumor-induced T cell inhibition via the activation of neuroglial cells represents new evidence of the importance of nerve-cancer crosstalk in controlling tumor development and progression. A better understanding of the tumor-neuro-immune axis supports the development of efficient targets for harnessing this axis and improving the efficacy of cancer therapy.
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Affiliation(s)
- Galina V. Shurin
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA 15261, USA
| | - Kavita Vats
- Department of Dermatology, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Oleg Kruglov
- Department of Dermatology, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Yuri L. Bunimovich
- Department of Dermatology, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Michael R. Shurin
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA 15261, USA
- Department of Immunology, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
- Clinical Immunopathology UPMC, CLB, Room 4024, 3477 Euler Way, Pittsburgh, PA 15213, USA
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24
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Evaluation of 5-[(Z)-(4-nitrobenzylidene)]-2-(thiazol-2-ylimino)-4-thiazolidinone (Les-6222) as Potential Anticonvulsant Agent. Sci Pharm 2022. [DOI: 10.3390/scipharm90030056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
It was determined that the studied 5-[(Z)-(4-nitrobenzylidene)]-2-(thiazol-2-ylimino)-4-thiazolidinone (Les-6222) affects the cyclooxygenase pathway of the arachidonic acid cascade, the markers of damage to neurons on models of PTZ kindling. In the model of chronic epileptogenesis in mice (pentylenetetrazole kindling), a 4-thiazolidinone derivative showed high anticonvulsant activity, which is weaker than the effect of sodium valproate and higher than Celecoxib. The mentioned compound has a pronounced anti-inflammatory effect in the brain on the background of the PTZ kindling, reliably inhibiting COX-1 and COX-2. The predominant inhibition of COX-2 by 44.5% indicates this enzyme’s high selectivity of Les-6222. According to the molecular docking study results, the studied compound revealed the properties of COX-1/COX-2 inhibitor and especially 5-LOX/FLAP. The decreasing content of 8-isoprostane in the brain of mice of the Les-6222 group indicates a beneficial effect on cell membranes in the background of oxidative stress during the long-term administration of PTZ. In addition, Les-6222 significantly decreased the content of neuron-specific enolase, indicating neuroprotective properties in the background of chronic epileptogenesis. The obtained results experimentally substantiate the feasibility of further developing Les-6222 as a promising anticonvulsant agent.
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25
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Liu X, Yao C, Tang Y, Liu X, Duan C, Wang C, Han F, Xiang Y, Wu L, Li Y, Ji A, Cai T. Role of p53 methylation in manganese-induced cyclooxygenase-2 expression in BV2 microglial cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 241:113824. [PMID: 36068751 DOI: 10.1016/j.ecoenv.2022.113824] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 06/14/2022] [Accepted: 06/27/2022] [Indexed: 05/21/2023]
Abstract
Manganese (Mn) is an essential cofactor for many enzymes and plays an important role in normal growth and development. However, excess exposure to manganese (Mn) may be an important environmental factor leading to neurodegeneration. The overexpression of microglial cyclooxygenase-2 (COX-2) plays a key role in neuroinflammation in neurodegenerative diseases. The existing data suggest that Mn can induce neuroinflammation by up-regulating COX-2 expression. However, the mechanisms involved in Mn-induced microglial COX-2 up-regulation remain to be determined. The aim of this study was to investigate the role of p53 in Mn-induced COX-2 expression in microglial cells. The results showed that Mn exposure induced the up-regulation of COX-2 and inhibited the expression of p53 in BV2 microglial cells. The addition of p53 activator and the over-expression of p53 blocked the expression of COX-2 and prostaglandin E2 (PGE2), a COX-2 downstream effector, induced by Mn. Further, Mn increased the methylation of p53 DNA in microglia, while the addition of demethylation reagent 5-Aza-dC enhanced the expression of p53 but decreased the expression of COX-2. These results suggested that Mn may inhibit p53 expression through induction of DNA methylation, which can further induce the expression of COX-2 in microglial cells.
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Affiliation(s)
- Xiaoling Liu
- Department of Epidemiology, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Chunyan Yao
- Department of Epidemiology, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yan Tang
- Experimental Teaching Center, School of Public Health, Southwest Medical University, Luzhou, China
| | - Xiaoyan Liu
- The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, China
| | - Chenggang Duan
- Department of Pathophysiology, Southwest Medical University, Luzhou, China
| | - Chunmei Wang
- Experimental Teaching Center, School of Public Health, Southwest Medical University, Luzhou, China
| | - Fei Han
- Institute of Toxicology, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Ying Xiang
- Department of Epidemiology, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Long Wu
- Department of Epidemiology, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yafei Li
- Department of Epidemiology, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Ailing Ji
- Department of Preventive Medicine & Chongqing Engineering Research Center of Pharmaceutical Sciences, Chongqing Medical and Pharmaceutical College, Chongqing, China.
| | - Tongjian Cai
- Department of Epidemiology, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China.
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26
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Liu G, Yu Q, Tan B, Ke X, Zhang C, Li H, Zhang T, Lu Y. Gut dysbiosis impairs hippocampal plasticity and behaviors by remodeling serum metabolome. Gut Microbes 2022; 14:2104089. [PMID: 35876011 PMCID: PMC9327780 DOI: 10.1080/19490976.2022.2104089] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Accumulating evidence suggests that gut microbiota as a critical mediator of gut-brain axis plays an important role in human health. Altered gut microbial profiles have been implicated in increasing the vulnerability of psychiatric disorders, such as autism, depression, and schizophrenia. However, the cellular and molecular mechanisms underlying the association remain unknown. Here, we modified the gut microbiome with antibiotics in newborn mice, and found that gut microbial alteration induced behavioral impairment by decreasing adult neurogenesis and long-term potentiation of synaptic transmission, and altering the gene expression profile in hippocampus. Reconstitution with normal gut flora produced therapeutic effects against both adult neurogenesis and behavioral deficits in the dysbiosis mice. Furthermore, our results show that circulating metabolites changes mediate the effect of gut dysbiosis on hippocampal plasticity and behavior outcomes. Elevating the serum 4-methylphenol, a small aromatic metabolite produced by gut bacteria, was found to induce autism spectrum disorder (ASD)-like behavior impairment and hippocampal dysfunction. Together our finding demonstrates that early-life gut dysbiosis and its correlated metabolites change contribute to hippocampal dysfunction and behavior impairment, hence highlight the potential microbiome-mediated therapies for treating psychiatric disorders.
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Affiliation(s)
- Guoqiang Liu
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, province, China,Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, province, China
| | - Quntao Yu
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, province, China,Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, province, China
| | - Bo Tan
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, province, China,Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, province, China
| | - Xiao Ke
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, province, China,Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, province, China
| | - Chen Zhang
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, province, China,Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, province, China
| | - Hao Li
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, province, China,Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, province, China,Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, province, China
| | - Tongmei Zhang
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, province, China,Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, province, China
| | - Youming Lu
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, province, China,Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, province, China,Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, province, China,CONTACT Youming Lu Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan4030030, China
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27
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Wang K, Wang J, Zhang J, Zhang A, Liu Y, Zhou J, Wang X, Zhang J. Ferroptosis in Glioma Immune Microenvironment: Opportunity and Challenge. Front Oncol 2022; 12:917634. [PMID: 35832539 PMCID: PMC9273259 DOI: 10.3389/fonc.2022.917634] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/13/2022] [Indexed: 01/18/2023] Open
Abstract
Glioma is the most common intracranial malignant tumor in adults and the 5-year survival rate of glioma patients is extremely poor, even in patients who received Stupp treatment after diagnosis and this forces us to explore more efficient clinical strategies. At this time, immunotherapy shows great potential in a variety of tumor clinical treatments, however, its clinical effect in glioma is limited because of tumor immune privilege which was induced by the glioma immunosuppressive microenvironment, so remodeling the immunosuppressive microenvironment is a practical way to eliminate glioma immunotherapy resistance. Recently, increasing studies have confirmed that ferroptosis, a new form of cell death, plays an important role in tumor progression and immune microenvironment and the crosstalk between ferroptosis and tumor immune microenvironment attracts much attention. This work summarizes the progress studies of ferroptosis in the glioma immune microenvironment.
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Affiliation(s)
- Kaikai Wang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Junjie Wang
- Department of Neurosurgery, The Fourth Affiliated Hospital, International Institutes of Medicine, Zhejiang University School of Medicine, Yiwu, China
| | - Jiahao Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Anke Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yibo Liu
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jingyi Zhou
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaoyu Wang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jianmin Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Brain Research Institute, Zhejiang University, Hangzhou, China.,Collaborative Innovation Center for Brain Science, Zhejiang University, Hangzhou, China.,Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, China
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28
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Nakajima H, Fujita S, Kakae M, Nagayasu K, Oh-Hora M, Shirakawa H, Kaneko S. Orai2 channel regulates prostaglandin E 2 production in TNFα/IL1α-stimulated astrocytes. Glia 2022; 70:1666-1680. [PMID: 35506586 DOI: 10.1002/glia.24188] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 04/19/2022] [Accepted: 04/25/2022] [Indexed: 01/04/2023]
Abstract
Astrocytes are glial cells that serve homeostatic functions in the central nervous system (CNS). Recent research, however, suggests that under pathological conditions, astrocytes are stimulated by various factors and actively participate in CNS inflammation. In the present study, we found that astrocytes upregulate various inflammatory factors including prostaglandin E2 (PGE2 ) by co-stimulation with tumor necrosis factor-alpha (TNFα) and interleukin-1alpha (IL1α). These TNFα/IL1α-stimulated astrocytes also showed increased Ca2+ release from the endoplasmic reticulum (ER) and increased expression of Orai2, a member of the store-operated calcium channel (SOCC) family. To reveal the role of Orai2, we used astrocytes in which Orai2 was knocked-down (KD) or knocked-out (KO). The expression of the prostaglandin E synthase Ptges and the production of PGE2 were higher in Orai2-KD astrocytes than in WT astrocytes when stimulated with TNFα and IL1α. Orai2-KO astrocytes also showed increased expression of Ptges and increased PGE2 production. The expression of Ptgs2, another PGE2 synthetic enzyme, was also upregulated in Orai2-KO astrocytes. Moreover, Orai2-KO astrocytes showed increased store-operated calcium entry (SOCE) and increased Orai1 expression. These results suggest that Orai2 is upregulated in TNFα/IL1α-stimulated astrocytes and reduces PGE2 production to some extent, modulating CNS inflammation. Our findings may aid in understanding how astrocytes are associated with inflammatory responses, and the identification of new targets that modulate astrocytic reactivity.
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Affiliation(s)
- Hiroki Nakajima
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Sayaka Fujita
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Masashi Kakae
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Kazuki Nagayasu
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Masatsugu Oh-Hora
- Department of Biochemistry, Juntendo University School of Medicine, Tokyo, Japan.,Division of Molecular Immunology, Research Center for Infectious Diseases, Medical Institute of Bioregulation, Kyusyu University, Fukuoka, Japan.,Laboratory of Molecular Immunology, Immunology Frontier Research Center, Osaka University, Suita, Japan
| | - Hisashi Shirakawa
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Shuji Kaneko
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
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29
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Cai M, Lin W. The Function of NF-Kappa B During Epilepsy, a Potential Therapeutic Target. Front Neurosci 2022; 16:851394. [PMID: 35360161 PMCID: PMC8961383 DOI: 10.3389/fnins.2022.851394] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 02/22/2022] [Indexed: 01/04/2023] Open
Abstract
The transcriptional regulator nuclear factor kappa B (NF-κB) modulates cellular biological activity by binding to promoter regions in the nucleus and transcribing various protein-coding genes. The NF-κB pathway plays a major role in the expressing genes related to inflammation, including chemokines, interleukins, and tumor necrosis factor. It also transcribes genes that can promote neuronal survival or apoptosis. Epilepsy is one of the most common brain disorders and it not only causes death worldwide but also affects the day-to-day life of affected individuals. While epilepsy has diverse treatment options, there remain patients who are not sensitive to the existing treatment methods. Recent studies have implicated the critical role of NF-κB in epilepsy. It is upregulated in neurons, glial cells, and endothelial cells, due to neuronal loss, glial cell proliferation, blood-brain barrier dysfunction, and hippocampal sclerosis through the glutamate and γ-aminobutyric acid imbalance, ion concentration changes, and other mechanisms. In this review, we summarize the functional changes caused by the upregulation of NF-κB in the central nervous system during different periods after seizures. This review is the first to deconvolute the complicated functions of NF-κB, and speculate that the regulation of NF-κB can be a safe and effective treatment strategy for epilepsy.
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30
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Lee B. Neuroprotective Effect of Acupuncture against Single Prolonged Stress-Induced Memory Impairments and Inflammation in Rat Brain via Modulation of Brain-Derived Neurotrophic Factor Expression. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2022; 2022:4430484. [PMID: 35251208 PMCID: PMC8890831 DOI: 10.1155/2022/4430484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 01/25/2022] [Indexed: 01/04/2023]
Abstract
Posttraumatic stress disorder (PTSD) is a serious mental disorder that can appear after exposure to extreme stress. Acupuncture is an alternative therapy that is widely used to treat various neurodegenerative diseases, as well as cognitive and memory impairments. The aim of this study was to examine whether acupuncture stimulation at a specific acupoint (Shenmen or heart meridian, HT7) could improve memory defects caused by single prolonged stress (SPS) in rats. After exposure to SPS, acupuncture on the HT7 acupoint in male rats was performed, once daily for 21 days. We confirmed that this treatment improved fear memory, cognitive function, and spatial memory by modulating the neuroinflammation and expression of brain-derived neurotrophic factor (BDNF) mRNA in the brain. It also significantly inhibited the activation of proinflammatory cytokines, such as tumor necrosis factor-α and interleukin-1β and the enzyme cyclooxygenase-2 in the brain; it increased the expression of BDNF mRNA in the hippocampus. Our findings provide valuable information concerning the clinical usefulness of acupuncture in the treatment of PTSD.
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Affiliation(s)
- Bombi Lee
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
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31
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Kuo HC, Lee KF, Chen SL, Chiu SC, Lee LY, Chen WP, Chen CC, Chu CH. Neuron–Microglia Contacts Govern the PGE2 Tolerance through TLR4-Mediated de Novo Protein Synthesis. Biomedicines 2022; 10:biomedicines10020419. [PMID: 35203628 PMCID: PMC8962342 DOI: 10.3390/biomedicines10020419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 02/02/2022] [Accepted: 02/07/2022] [Indexed: 02/05/2023] Open
Abstract
Cellular and molecular mechanisms of the peripheral immune system (e.g., macrophage and monocyte) in programming endotoxin tolerance (ET) have been well studied. However, regulatory mechanism in development of brain immune tolerance remains unclear. The inducible COX-2/PGE2 axis in microglia, the primary innate immune cells of the brain, is a pivotal feature in causing inflammation and neuronal injury, both in acute excitotoxic insults and chronic neurodegenerative diseases. This present study investigated the regulatory mechanism of PGE2 tolerance in microglia. Multiple reconstituted primary brain cells cultures, including neuron–glial (NG), mixed glial (MG), neuron-enriched, and microglia-enriched cultures, were performed and consequently applied to a treatment regimen for ET induction. Our results revealed that the levels of COX-2 mRNA and supernatant PGE2 in NG cultures, but not in microglia-enriched and MG cultures, were drastically reduced in response to the ET challenge, suggesting that the presence of neurons, rather than astroglia, is required for PGE2 tolerance in microglia. Furthermore, our data showed that neural contact, instead of its soluble factors, is sufficient for developing microglial PGE2 tolerance. Simultaneously, this finding determined how neurons regulated microglial PGE2 tolerance. Moreover, by inhibiting TLR4 activation and de novo protein synthesis by LPS-binding protein (LBP) manipulation and cycloheximide, our data showed that the TLR4 signal and de novo protein synthesis are necessary for microglia to develop PGE2 tolerance in NG cells under the ET challenge. Altogether, our findings demonstrated that neuron–microglia contacts are indispensable in emerging PGE2 tolerance through the regulation of TLR4-mediated de novo protein synthesis.
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Affiliation(s)
- Hsing-Chun Kuo
- Division of Basic Medical Sciences, Department of Nursing, Chang Gung University of Science and Technology, Chiayi 61363, Taiwan;
- Chang Gung Memorial Hospital, Chiayi 61363, Taiwan
- Research Center for Food and Cosmetic Safety, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan
- Chronic Diseases and Health Promotion Research Center, Chang Gung University of Science and Technology, Chiayi 61363, Taiwan
| | - Kam-Fai Lee
- Department of Pathology, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan;
| | - Shiou-Lan Chen
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University (KMU), Kaohsiung 80708, Taiwan;
| | - Shu-Chen Chiu
- National Laboratory Animal Center (NLAC), NARLabs, Tainan 74147, Taiwan;
| | - Li-Ya Lee
- Grape King Biotechnology Inc (Grape King Bio Ltd.), Zhong-Li, Taoyuan 32542, Taiwan; (L.-Y.L.); (W.-P.C.); (C.-C.C.)
| | - Wan-Ping Chen
- Grape King Biotechnology Inc (Grape King Bio Ltd.), Zhong-Li, Taoyuan 32542, Taiwan; (L.-Y.L.); (W.-P.C.); (C.-C.C.)
| | - Chin-Chu Chen
- Grape King Biotechnology Inc (Grape King Bio Ltd.), Zhong-Li, Taoyuan 32542, Taiwan; (L.-Y.L.); (W.-P.C.); (C.-C.C.)
| | - Chun-Hsien Chu
- Institute of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan 70456, Taiwan
- Correspondence: or ; Tel.: +886-6-235-3535 (ext. 3592); Fax: +886-6-209-5845
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Chai T, Qiu C, Xian Z, Lu Y, Zeng Y, Li J. A narrative review of research advances in hypoxic pulmonary hypertension. ANNALS OF TRANSLATIONAL MEDICINE 2022; 10:230. [PMID: 35280399 PMCID: PMC8908157 DOI: 10.21037/atm-22-259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 02/18/2022] [Indexed: 11/23/2022]
Abstract
Background and Objective Hypoxic pulmonary hypertension (HPH) is a pathological syndrome characterized by pulmonary vasoconstriction and pulmonary vascular remodeling caused by hypoxia, which eventually leads to right heart failure or death. There are 2 stages of onset of HPH: hypoxic pulmonary vasoconstriction (HPV) and hypoxic pulmonary vascular remodeling (HPVR). It is an important pathophysiological link in the pathogenesis of chronic obstructive pulmonary disease (COPD) and chronic mountain sickness (CMS), and its severity is closely related to the course and prognosis of COPD and CMS. However, there is a lack of systematic review on the diagnosis, pathogenesis and treatment of HPH. The objective of this paper is to review the diagnosis, pathogenesis, treatment of HPH. Methods In this paper, the method of literature review is adopted to obtain the information about HPH. Based on the literature, comprehensive and systematic review is made. The diagnosis, pathogenesis, treatment of HPH are summarized. Key Content and Findings Right heart catheterization is the gold standard for diagnosing HPH. Hypoxia-inducible factor, oxidative stress, metal metabolism, ion channel, inflammatory cytokines, cell apoptosis and vascular factors are the main pathogenesis of HPH. The treatment of HPH includes long-term oxygen therapy, statins, prostaglandins, phosphodiesterase inhibitor and ET receptor antagonists. Conclusions Although great progress has been made in the pathophysiology and molecular biology of HPH, it is still unclear which factors play a leading role in the pathogenesis of HPH, and no breakthrough has been made in the treatment of HPH. It is believed that the specific mechanism will be revealed as the research continues, and earlier diagnosis and the development of more effective targeted drugs will be the focus of future research.
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Affiliation(s)
- Tianci Chai
- Key Laboratory of Shenzhen Respiratory Disease, Shenzhen Institute of Respiratory Disease, Shenzhen People's Hospital (The First Affiliated Hospital of Southern University of Science and Technology, The Second Clinical Medical College of Jinan University), Shenzhen, China
| | - Chen Qiu
- Key Laboratory of Shenzhen Respiratory Disease, Shenzhen Institute of Respiratory Disease, Shenzhen People's Hospital (The First Affiliated Hospital of Southern University of Science and Technology, The Second Clinical Medical College of Jinan University), Shenzhen, China
| | - Zhihong Xian
- Key Laboratory of Shenzhen Respiratory Disease, Shenzhen Institute of Respiratory Disease, Shenzhen People's Hospital (The First Affiliated Hospital of Southern University of Science and Technology, The Second Clinical Medical College of Jinan University), Shenzhen, China
| | - Yongzhen Lu
- Key Laboratory of Shenzhen Respiratory Disease, Shenzhen Institute of Respiratory Disease, Shenzhen People's Hospital (The First Affiliated Hospital of Southern University of Science and Technology, The Second Clinical Medical College of Jinan University), Shenzhen, China
| | - Yuwei Zeng
- Key Laboratory of Shenzhen Respiratory Disease, Shenzhen Institute of Respiratory Disease, Shenzhen People's Hospital (The First Affiliated Hospital of Southern University of Science and Technology, The Second Clinical Medical College of Jinan University), Shenzhen, China
| | - Jie Li
- Key Laboratory of Shenzhen Respiratory Disease, Shenzhen Institute of Respiratory Disease, Shenzhen People's Hospital (The First Affiliated Hospital of Southern University of Science and Technology, The Second Clinical Medical College of Jinan University), Shenzhen, China
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Arbo BD, Schimith LE, Goulart dos Santos M, Hort MA. Repositioning and development of new treatments for neurodegenerative diseases: Focus on neuroinflammation. Eur J Pharmacol 2022; 919:174800. [DOI: 10.1016/j.ejphar.2022.174800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 01/18/2022] [Accepted: 02/02/2022] [Indexed: 11/03/2022]
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Yang H, Chen X, Li Z, Wu X, Zhou M, Zhang X, Liu Y, Sun Y, Zhu C, Guo Q, Chen T, Zhang J. Genome-Wide Analysis Indicates a Complete Prostaglandin Pathway from Synthesis to Inactivation in Pacific White Shrimp, Litopenaeus vannamei. Int J Mol Sci 2022; 23:ijms23031654. [PMID: 35163575 PMCID: PMC8835781 DOI: 10.3390/ijms23031654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 02/02/2023] Open
Abstract
Prostaglandins (PGs) play many essential roles in the development, immunity, metabolism, and reproduction of animals. In vertebrates, arachidonic acid (ARA) is generally converted to prostaglandin G2 (PGG2) and H2 (PGH2) by cyclooxygenase (COX); then, various biologically active PGs are produced through different downstream prostaglandin synthases (PGSs), while PGs are inactivated by 15-hydroxyprostaglandin dehydrogenase (PGDH). However, there is very limited knowledge of the PG biochemical pathways in invertebrates, particularly for crustaceans. In this study, nine genes involved in the prostaglandin pathway, including a COX, seven PGSs (PGES, PGES2, PGDS1/2, PGFS, AKR1C3, and TXA2S), and a PGDH were identified based on the Pacific white shrimp (Litopenaeus vannamei) genome, indicating a more complete PG pathway from synthesis to inactivation in crustaceans than in insects and mollusks. The homologous genes are conserved in amino acid sequences and structural domains, similar to those of related species. The expression patterns of these genes were further analyzed in a variety of tissues and developmental processes by RNA sequencing and quantitative real-time PCR. The mRNA expression of PGES was relatively stable in various tissues, while other genes were specifically expressed in distant tissues. During embryo development to post-larvae, COX, PGDS1, GDS2, and AKR1C3 expressions increased significantly, and increasing trends were also observed on PGES, PGDS2, and AKR1C3 at the post-molting stage. During the ovarian maturation, decreasing trends were found on PGES1, PGDS2, and PGDH in the hepatopancreas, but all gene expressions remained relatively stable in ovaries. In conclusion, this study provides basic knowledge for the synthesis and inactivation pathway of PG in crustaceans, which may contribute to the understanding of their regulatory mechanism in ontogenetic development and reproduction.
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Affiliation(s)
- Hao Yang
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China; (H.Y.); (Y.L.); (Y.S.)
| | - Xiaoli Chen
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (X.C.); (C.Z.)
| | - Zhi Li
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China; (Z.L.); (X.W.); (M.Z.)
| | - Xugan Wu
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China; (Z.L.); (X.W.); (M.Z.)
| | - Mingyu Zhou
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China; (Z.L.); (X.W.); (M.Z.)
| | - Xin Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;
| | - Yujie Liu
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China; (H.Y.); (Y.L.); (Y.S.)
| | - Yuying Sun
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China; (H.Y.); (Y.L.); (Y.S.)
| | - Chunhua Zhu
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (X.C.); (C.Z.)
| | - Qiuhui Guo
- EasyATGC Limited Liability Company, Shenzhen 518081, China;
| | - Ting Chen
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;
- Correspondence: (T.C.); (J.Z.)
| | - Jiquan Zhang
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China; (H.Y.); (Y.L.); (Y.S.)
- Correspondence: (T.C.); (J.Z.)
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Upmacis RK, Becker WL, Rattendi DM, Bell RS, Jordan KD, Saniei S, Mejia E. Analysis of Sex-Specific Prostanoid Production Using a Mouse Model of Selective Cyclooxygenase-2 Inhibition. Biomark Insights 2022; 17:11772719221142151. [DOI: 10.1177/11772719221142151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 11/11/2022] [Indexed: 12/14/2022] Open
Abstract
Background: Prostanoids are a family of lipid mediators formed from arachidonic acid by cyclooxygenase enzymes and serve as biomarkers of vascular function. Prostanoid production may be different in males and females indicating that different therapeutic approaches may be required during disease. Objectives: We examined sex-dependent differences in COX-related metabolites in genetically modified mice that produce a cyclooxygenase-2 (COX2) enzyme containing a tyrosine 385 to phenylalanine (Y385F) mutation. This mutation renders the COX2 enzyme unable to form a key intermediate radical required for complete arachidonic acid metabolism and provides a model of selective COX2 inhibition. Design and Methods: Mice heterozygous for the Y385F mutation in COX2 were mated to produce cohorts of wild-type, heterozygous, and COX2 mutant mice. We investigated whether the genotype distribution followed Mendelian genetics and studied whether sex-specific differences could be found in certain prostanoid levels measured in peritoneal macrophages and in urinary samples. Results: The inheritance of the COX2 mutation displayed a significant deviation with respect to Mendel’s laws of genetics, with a lower-than-expected progeny of weaned COX2 mutant pups. In macrophages, prostaglandin E2 (PGE2) production following lipopolysaccharide (LPS) and interferon gamma (IFNγ) stimulation was COX2-dependent in both males and females, and data indicated that crosstalk between the nitric oxide (NO) and COX2 pathways may be sex specific. We observed significant differences in urinary PGE2 production by male and female COX2 mutant mice, with the loss of COX2 activity in male mice decreasing their ability to produce urinary PGE2. Finally, female mice across all 3 genotypes produced similar levels of urinary thromboxane (measured as 11-dehydro TxB2) at significantly higher levels than males, indicating a sex-related difference that is likely COX1-derived. Conclusions: Our findings clearly demonstrate that sex-related differences in COX-derived metabolites can be observed, and that other pathways (such as the NO pathway) are affected.
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Affiliation(s)
- Rita K Upmacis
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Wendy L Becker
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Donna M Rattendi
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Raven S Bell
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Kelsey D Jordan
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Shayan Saniei
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Elena Mejia
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
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Sadhu SP, Yarla NS, Pragada RR, Konduri P. Anti-inflammatory Activity of PLA 2 Inhibitory Saccharumoside-B. Antiinflamm Antiallergy Agents Med Chem 2022; 21:121-134. [PMID: 35362396 DOI: 10.2174/1871523021666220330143058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/25/2022] [Accepted: 02/16/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Saccharumoside-B and its analogs were found to have anticancer potential in vitro. The present study reports acute toxicity, molecular docking, ADMET profile analysis, and in vitro and in vivo anti-inflammatory activity of saccharumoside-B for the first time. METHODS The in vitro enzyme inhibitory activity of saccharumoside-B on PLA2, COX-1, COX-2, and 5-LOX enzymes was evaluated by the cell-free method, and its effect on TNF-α, IL1β, and IL- 6 secretion levels in LPS stimulated THP-1 human monocytes was determined by ELISA-based methods. The anti-inflammatory activity was evaluated in vivo by carrageenan-induced rat paw edema model. To test its binding affinity at the active site pockets of PLA2 enzymes and assess drug-like properties, docking experiments and ADMET studies were performed. RESULTS Saccharumoside-B showed selective inhibition of the sPLA2 enzyme (IC50 = 7.53 ± 0.232 μM), and thioetheramide-PC was used as a positive control. It showed significant inhibition (P ≤ 0.05) of TNF-α, IL-1β, and IL-6 cytokines compared to the positive control dexamethasone. Saccharumoside-B showed a dose-dependent inhibition of carrageenan-induced rat paw edema, with a maximum inhibition (76.09 ± 0.75) observed at 3 hours after the phlogistic agent injection. Saccharumoside-B potentially binds to the active site pocket of sPLA2 crystal protein (binding energy -7.6 Kcal/Mol). It complies with Lipinski's Rule of Five, showing a promising safety profile. The bioactivity scores suggested it to be a better enzyme inhibitor. CONCLUSION Saccharumoside-B showed significant PLA2 inhibition. It can become a potential lead molecule in synthesizing a new class of selective PLA2 inhibitors with a high safety profile in the future.
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Affiliation(s)
- Surya Prabha Sadhu
- Department of AU College of Pharmaceutical Sciences and Pharmacology, Andhra University, Visakhapatnam, India
- Department of Pharmacology, Shri Vishnu College of Pharmacy, Bhimavaram, India
| | - Nagendra Sastry Yarla
- Department of Biochemistry, GITAM Institute of Science, GITAM University, Visakhapatnam, India
| | - Rajeswara Rao Pragada
- Department of AU College of Pharmaceutical Sciences, Pharmacology, Andhra University, Visakhapatnam, India
| | - Prasad Konduri
- Department of Pharmacology, Shri Vishnu College of Pharmacy, Bhimavaram, India
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Ogawa B, Nakanishi Y, Wakamatsu M, Takahashi Y, Shibutani M. Repeated administration of acrylamide for 28 days reduces late-stage progenitor cells and immature granule cells accompanying impaired neurite outgrowth in the adult hippocampal neurogenesis in young-adult rats. J Toxicol Sci 2022; 47:467-482. [DOI: 10.2131/jts.47.467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Bunichiro Ogawa
- Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd
| | - Yutaka Nakanishi
- Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd
| | - Masaki Wakamatsu
- Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd
| | - Yasunori Takahashi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Makoto Shibutani
- Institute of Global Innovation Research, Tokyo University of Agriculture and Technology
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Tsai MH, Chao HR, Hsu WL, Tsai CC, Lin CW, Chen CH. Analysis of Polybrominated Diphenyl Ethers and Lipid Composition in Human Breast Milk and Their Correlation with Infant Neurodevelopment. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182111501. [PMID: 34770016 PMCID: PMC8583092 DOI: 10.3390/ijerph182111501] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/22/2021] [Accepted: 10/28/2021] [Indexed: 01/09/2023]
Abstract
Breastfeeding is recommended over formula feeding, but human breast milk (HBM) composition varies and can be affected by food additives. Whether flame-retardant polybrominated diphenyl ethers (PBDEs) found in HBM interact with lipid components of HBM to impede infant neurodevelopment is a critical public health issue. Using lipidomic analysis, we examined the association of PBDEs in HBM and HBM lipid components with infant neurodevelopment. HBM samples (n = 100) were collected at the beginning stage of breastfeeding and analyzed for 30 PBDE congeners as well as a group of lipid components by using high-resolution gas chromatography, mass spectrometry, and liquid chromatography time-of-flight mass spectrometry. Infants were examined at 8 to 12 months of age by using the Bayley-III to assess neurodevelopment. A total of seven PBDEs, 35 lipids, and 27 fatty acids in HBM showed significant associations with Bayley-III scores. Multivariate analysis confirmed that these candidate PBDEs and lipid components were significant predictors of infant neurodevelopment. Eicosapentaenoic acid and docosapentaenoic acid in HBM showed no association with infant neurodevelopment in the general Taiwanese population. While certain PBDEs may play a role, our findings indicate that the lipid components of HBM are directly important for infant neurodevelopment.
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Affiliation(s)
- Ming-Hsien Tsai
- Department of Child Care, College of Humanities and Social Sciences, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan; (M.-H.T.); (C.-W.L.)
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Emerging Compounds Research Center, General Research Service Center, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
| | - How-Ran Chao
- Emerging Compounds Research Center, General Research Service Center, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
- Department of Environmental Science and Engineering, College of Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
- Institute of Food Safety Management, College of Agriculture, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
- Correspondence:
| | - Wen-Li Hsu
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Emerging Compounds Research Center, General Research Service Center, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
- Department of Dermatology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80145, Taiwan
| | - Ching-Chung Tsai
- Department of Pediatrics, E-Da Hospital, Kaohsiung 82445, Taiwan;
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan
| | - Chu-Wen Lin
- Department of Child Care, College of Humanities and Social Sciences, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan; (M.-H.T.); (C.-W.L.)
| | - Chu-Huang Chen
- Vascular and Medicinal Research, Texas Heart Institute, Houston, TX 77030, USA;
- New York Heart Research Foundation, Mineola, NY 11501, USA
- Institute for Biomedical Sciences, Shinshu University, Nagano 390-8621, Japan
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Jung HY, Kim W, Hahn KR, Nam SM, Yi SS, Kwon HJ, Kang MS, Choi JH, Kim DW, Yoon YS, Hwang IK. Spatial and temporal changes in the PGE2 EP2 receptor in mice hippocampi during postnatal development and its relationship with cyclooxygenase-2. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2021; 24:908-913. [PMID: 34712420 PMCID: PMC8528246 DOI: 10.22038/ijbms.2021.56286.12556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/30/2021] [Indexed: 11/06/2022]
Abstract
Objective(s): Prostaglandin E2 E-prostanoid 2 receptor (PGE2 EP2), downstream of cyclooxygenase-2 (COX-2), plays an important role in inflammatory responses, but there are some reports about synaptic functions of COX-2 and PGE2 EP2 in the hippocampus. Materials and Methods: C57BL/6J mice were sacrificed at postnatal days (P) 1, 7, 14, 28, and 56 for immunohistochemical staining for EP2 and doublecortin as well as western blot for EP2. In addition, COX-2 knockout and its wild-type mice were euthanized for immunohistochemical staining for EP2. Results: EP2 immunoreactivity was observed in the majority of the cells in the dentate gyrus at P1 and P7, while at P14, it was detected in the outer granule cell layer and was confined to its subgranular zone at P28 and P56. EP2 protein levels in the hippocampal homogenates were also highest at P7 and lowest at P56. EP2 immunoreactivity was partially colocalized, with doublecortin (DCX)-immunoreactive neuroblasts appearing in the mid-zone of the granule cell layer at P14 and in the subgranular zone of the dentate gyrus at P28. Co-localization of EP2 and DCX was significantly decreased in the dentate gyrus in the P28 group compared with that in the P14 group. In COX-2 knockout mice, EP2 immunoreactivity was significantly decreased in the hippocampal CA1 region (P=0.000165) and dentate gyrus (P=0.00898). Conclusion: EP2 decreases with age, which is expressed in DCX-immunoreactive neuroblasts in the dentate gyrus. This suggests that EP2 is closely linked to structural lamination and adult neurogenesis in the dentate gyrus.
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Affiliation(s)
- Hyo Young Jung
- Department of Veterinary Medicine & Institute of Veterinary Science, Chungnam National University, Daejeon 34134, South Korea
| | - Woosuk Kim
- Department of Anatomy, College of Veterinary Medicine, and Veterinary Science Research Institute, Konkuk University, Seoul 05030, South Korea
| | - Kyu Ri Hahn
- Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, South Korea
| | - Sung Min Nam
- Department of Anatomy, School of Medicine, Wonkwang University, Iksan 54538, South Korea
| | - Sun Shin Yi
- Department of Biomedical Laboratory Science, College of Medical Sciences, Soonchunhyang University, Asan 31538, South Korea
| | - Hyun Jung Kwon
- Department of Biochemistry and Molecular Biology, Research Institute of Oral Sciences, College of Dentistry, Gangneung-Wonju National University, Gangneung 25457, South Korea
| | - Min Soo Kang
- Department of Anatomy, College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, South Korea
| | - Jung Hoon Choi
- Department of Anatomy, College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, South Korea
| | - Dae Won Kim
- Department of Biochemistry and Molecular Biology, Research Institute of Oral Sciences, College of Dentistry, Gangneung-Wonju National University, Gangneung 25457, South Korea
| | - Yeo Sung Yoon
- Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, South Korea
| | - In Koo Hwang
- Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, South Korea
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Yang Y, Xiang P, Chen Q, Luo Y, Wang H, Li H, Yang L, Hu C, Zhang J, Li Y, Xia H, Chen Z, Yang J. The imbalance of PGD2-DPs pathway is involved in the type 2 diabetes brain injury by regulating autophagy. Int J Biol Sci 2021; 17:3993-4004. [PMID: 34671214 PMCID: PMC8495389 DOI: 10.7150/ijbs.60149] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 09/07/2021] [Indexed: 12/17/2022] Open
Abstract
Prostaglandin D2 (PGD2) is the most abundant prostaglandin in the brain, but its involvement in brain damage caused by type 2 diabetes (T2D) has not been reported. In the present study, we found that increased PGD2 content is related to the inhibition of autophagy, which aggravates brain damage in T2D, and may be involved in the imbalanced expression of the corresponding PGD2 receptors DP1 and DP2. We demonstrated that DP2 inhibited autophagy and promotedT2D-induced brain damage by activating the PI3K/AKT/mTOR pathway, whereas DP1enhanced autophagy and amelioratedT2D brain damage by activating the cAMP/PKA pathway. In a T2D rat model, DP1 expression was decreased, and DP2 expression was increased; therefore, the imbalance in PGD2-DPs may be involved in T2D brain damage through the regulation of autophagy. However, there have been no reports on whether PKA can directly inhibit mTOR. The PKA catalytic subunit (PKA-C) has three subtypes (α, β and γ), and γ is not expressed in the brain. Subsequently, we suggested that PKA could directly interact with mTOR through PKA-C(α) and PKA-C(β). Our results suggest that the imbalance in PGD2-DPs is related to changes in autophagy levels in T2D brain damage, and PGD2 is involved in T2D brain damage by promoting autophagy via DP1-PKA/mTOR and inhibiting autophagy via DP2-PI3K/AKT/mTOR.
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Affiliation(s)
- Yang Yang
- Department of Pharmacology, Chongqing Medical University, the Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China.,Department of Pharmacology, Chongqing Health Center for Women and Children Chongqing 400016, China
| | - Pu Xiang
- Department of pharmacy,Dianjiang People's Hospital of Chongqing, Dianjiang, Chongqing 408300, China
| | - Qi Chen
- Pharmacy department of GuiZhou Provincial People,s Hospital, Guiyang 550000, China
| | - Ying Luo
- Department of Pharmacology, Chongqing Medical University, the Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Hong Wang
- Department of Pharmacology, Chongqing Medical University, the Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Huan Li
- Department of Pharmacology, Chongqing Medical University, the Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Lu Yang
- Department of Pharmacology, Chongqing Medical University, the Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Congli Hu
- Department of Pharmacology, Chongqing Medical University, the Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Jiahua Zhang
- Department of Pharmacology, Chongqing Medical University, the Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Yuke Li
- Department of Pharmacology, Chongqing Medical University, the Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Hui Xia
- Department of Pharmacology, Chongqing Medical University, the Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Zhihao Chen
- Department of Pharmacology, Chongqing Medical University, the Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Junqing Yang
- Department of Pharmacology, Chongqing Medical University, the Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
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Figurová D, Tokárová K, Greifová H, Knížatová N, Kolesárová A, Lukáč N. Inflammation, It's Regulation and Antiphlogistic Effect of the Cyanogenic Glycoside Amygdalin. Molecules 2021; 26:5972. [PMID: 34641516 PMCID: PMC8512454 DOI: 10.3390/molecules26195972] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 12/14/2022] Open
Abstract
The inflammatory reaction accompanies in part or in full any disease process in the vascularized metazoan. This complicated reaction is controlled by regulatory mechanisms, some of which produce unpleasant symptomatic manifestations of inflammation. Therefore, there has been an effort to develop selective drugs aimed at removing pain, fever, or swelling. Gradually, however, serious adverse side effects of such inhibitors became apparent. Scientific research has therefore continued to explore new possibilities, including naturally available substances. Amygdalin is a cyanogenic glycoside present, e.g., in bitter almonds. This glycoside has already sparked many discussions among scientists, especially about its anticancer potential and related toxic cyanides. However, toxicity at different doses made it generally unacceptable. Although amygdalin given at the correct oral dose may not lead to poisoning, it has not yet been accurately quantified, as its action is often affected by different intestinal microbial consortia. Its pharmacological activities have been studied, but its effects on the body's inflammatory response are lacking. This review discusses the chemical structure, toxicity, and current knowledge of the molecular mechanism of amygdalin activity on immune functions, including the anti-inflammatory effect, but also discusses inflammation as such, its mediators with diverse functions, which are usually targeted by drugs.
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Affiliation(s)
| | - Katarína Tokárová
- Department of Animal Physiology, Faculty of Biotechnology and Food Science, Slovak University of Agriculture in Nitra, Trieda Andreja Hlinku 2, 949 76 Nitra, Slovakia; (D.F.); (H.G.); (N.K.); (A.K.); (N.L.)
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Emon NU, Rudra S, Alam S, Haidar IKA, Paul S, Richi FT, Shahriar S, Sayeed MA, Tumpa NI, Ganguly A. Chemical, biological and protein-receptor binding profiling of Bauhinia scandens L. stems provide new insights into the management of pain, inflammation, pyrexia and thrombosis. Biomed Pharmacother 2021; 143:112185. [PMID: 34543985 DOI: 10.1016/j.biopha.2021.112185] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/07/2021] [Accepted: 09/08/2021] [Indexed: 01/06/2023] Open
Abstract
Bauhinia scandens L. (Family, Fabaceae) is a medicinal plant used for conventional and societal medication in Ayurveda. The present study has been conducted to screen the chemical, pharmacological and biochemical potentiality of the methanol extracts of B. scandens stems (MEBS) along with its related fractions including carbon tetrachloride (CTBS), di-chloromethane (DMBS) and n-butanol (BTBS). UPLC-QTOF-MS has been implemented to analyze the chemical compounds of the methanol extracts of Bauhinia scandens stems. Additionally, antinociceptive and anti-inflammatory effects were performed by following the acetic acid-induced writhing test and formalin-mediated paw licking test in the mice model. The antipyretic investigation was performed by Brewer Yeast induced pyrexia method. The clot lysis method was implemented to screen the thrombolytic activity in human serum. Besides, the in silico study was performed for the five selected chemical compounds of Bauhinia scandens, found by UPLC-QTOF-MS By using Discover Studio 2020, UCSF Chimera, PyRx autodock vina and online tools. The MEBS and its fractions exhibited remarkable inhibition in dose dependant manner in the antinociceptive and antiinflammatory investigations. The antipyretic results of MEBS and DMBS were close to the standard drug indomethacin. Investigation of the thrombolytic effect of MEBS, CTBS, DMBS, and BTBS revealed notable clot-lytic potentials. Besides, the phenolic compounds of the plant extracts revealed strong binding affinity to the COX-1, COX-2, mPGES-1 and plasminogen activator enzymes. To recapitulate, based on the research work, Bauhinia scandens L. stem and its phytochemicals can be considered as prospective wellsprings for novel drug development and discovery by future researchers.
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Affiliation(s)
- Nazim Uddin Emon
- Department of Pharmacy, Faculty of Science and Engineering, International Islamic University Chittagong, Chattogram 4318, Bangladesh
| | - Sajib Rudra
- Department of Botany, Faculty of Biological Sciences, University of Chittagong, Chattogram 4331, Bangladesh
| | - Safaet Alam
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh.
| | | | - Susmita Paul
- Department of Botany, Faculty of Biological Sciences, University of Chittagong, Chattogram 4331, Bangladesh
| | - Fahmida Tasnim Richi
- Department of Pharmacy, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Saimon Shahriar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Mohammed Aktar Sayeed
- Department of Pharmacy, Faculty of Science and Engineering, International Islamic University Chittagong, Chattogram 4318, Bangladesh.
| | - Nadia Islam Tumpa
- Department of Microbiology, Faculty of Biological Sciences, University of Chittagong, Chattogram 4331, Bangladesh
| | - Amlan Ganguly
- Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh.
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MicroRNA and cyclooxygenase-2 in breast cancer. Clin Chim Acta 2021; 522:36-44. [PMID: 34389281 DOI: 10.1016/j.cca.2021.08.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/30/2021] [Accepted: 08/07/2021] [Indexed: 12/24/2022]
Abstract
Cancer remains a major public health problem worldwide and the latest statistics show that breast cancer (BC) is among the most frequent in women. MicroRNAs (miRNAs; miRs) and cyclooxygenase-2 (COX-2) are new diagnostic and therapeutic biomarkers for monitoring BC. COX-2 is a prominent tumor-associated inflammatory factor highly expressed in human tumor cells, including BC. Expression of COX-2 contributes to tumor growth, metastasis and recurrence. MiRs are a group of short (~22 nucleotides), noncoding regulatory RNAs that downregulate gene expression post-transcriptionally and play vital roles in regulating cancer development and progression. Interestingly, there are a group of miRNAs differentially expressed in breast tumor tissue. Understanding the pathway linking miRNAs to COX-2 can provide novel insight for suppressing COX-2 expression via gene silencing thereby leading to the development of selective miRNA inhibitors. Further research can also reveal key intermediate players and their potential as therapeutic targets. Given the association between different miRNAs and COX-2 expression in BC, this review presents a comprehensive overview of the current literature concerning how miRNAs and COX-2 signaling interact in BC progression.
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Hardeland R. Melatonin and Microglia. Int J Mol Sci 2021; 22:ijms22158296. [PMID: 34361062 PMCID: PMC8347578 DOI: 10.3390/ijms22158296] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 07/23/2021] [Accepted: 07/29/2021] [Indexed: 12/15/2022] Open
Abstract
Melatonin interacts in multiple ways with microglia, both directly and, via routes of crosstalk with astrocytes and neurons, indirectly. These effects of melatonin are of relevance in terms of antioxidative protection, not only concerning free-radical detoxification, but also in prevention of processes that cause, promote, or propagate oxidative stress and neurodegeneration, such as overexcitation, toxicological insults, viral and bacterial infections, and sterile inflammation of different grades. The immunological interplay in the CNS, with microglia playing a central role, is of high complexity and includes signaling toward endothelial cells and other leukocytes by cytokines, chemokines, nitric oxide, and eikosanoids. Melatonin interferes with these processes in multiple signaling routes and steps. In addition to canonical signal transduction by MT1 and MT2 melatonin receptors, secondary and tertiary signaling is of relevance and has to be considered, e.g., via the upregulation of sirtuins and the modulation of pro- and anti-inflammatory microRNAs. Many details concerning the modulation of macrophage functionality by melatonin are obviously also applicable to microglial cells. Of particular interest is the polarization toward M2 subtypes instead of M1, i.e., in favor of being anti-inflammatory at the expense of proinflammatory activities, which is well-documented in macrophages but also applies to microglia.
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Affiliation(s)
- Rüdiger Hardeland
- Johann Friedrich Blumenbach Institute of Zoology and Anthropology, University of Göttingen, 37073 Göttingen, Germany
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Li N, Shi H, Hou P, Gao L, Shi Y, Mi W, Zhang G, Wang N, Dai W, Wei L, Jin T, Shi Y, Guo S. Genetic variants of CYP4F12 gene are associated with glioma susceptibility. Int J Cancer 2021; 149:1910-1915. [PMID: 34319593 DOI: 10.1002/ijc.33755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 07/13/2021] [Accepted: 07/14/2021] [Indexed: 01/28/2023]
Abstract
Glioma is a common and fatal primary malignant tumor of the central nervous system, and its prognosis is poor. To determine the susceptibility markers of gliomas in Chinese population we conducted a genome-wide association study (GWAS) of glioma in the Han Chinese population, with a total of 485 glioma cases and 485 controls. Genotyping was conducted using the Applied Biosystems Axiom Precision Medicine Diversity Array. Besides, we carried out imputation using IMPUTE 2.0 software, and the 1000 Genomes Phase 3 was used as the reference panel. The logistic regression model was used to analyze the association of each SNP with glioma risk, assuming an additive genetic model, which was implemented in PLINK version 1.9. Odds ratio (OR) and 95% confidence interval (CI) were estimated from logistic regression analysis with adjustment for age and gender. The results revealed that the SNP (rs688755) in the exon region of CYP4F12 at 19p13.12 reached genome-wide significance associated with gliomas (P = 2.35 × 10-8 , OR = 3.55, 95% CI = 2.20-5.74). Our findings provide deeper insight into the genetic contribution to glioma in different populations.
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Affiliation(s)
- Nan Li
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,The Affiliated Children Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Hangyu Shi
- The Affiliated Children Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Pengfei Hou
- Ninth Hospital of Xi'an, Xi'an, Shaanxi, China
| | - Lu Gao
- The Affiliated Children Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yongqiang Shi
- The Affiliated Children Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Weiyang Mi
- The Affiliated Children Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Gang Zhang
- The Affiliated Children Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Ning Wang
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Wei Dai
- Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Lin Wei
- Xi'an Chest Hospital, Xi'an, Shaanxi, China
| | - Tianbo Jin
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education, Xi'an, Shaanxi, China
| | - Yongzhi Shi
- The Affiliated Children Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Shiwen Guo
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
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The Molecular Aspects of Disturbed Platelet Activation through ADP/P2Y 12 Pathway in Multiple Sclerosis. Int J Mol Sci 2021; 22:ijms22126572. [PMID: 34207429 PMCID: PMC8234174 DOI: 10.3390/ijms22126572] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/13/2021] [Accepted: 06/16/2021] [Indexed: 12/22/2022] Open
Abstract
Epidemiological studies confirm a high risk of ischemic events in secondary-progressive multiple sclerosis (SP MS) patients, directly associated with an increased level of pro-thrombotic activity of platelets. Our work aimed to verify potential molecular abnormalities of the platelet P2Y12 receptor expression and functionality as a cause of an increased risk of thromboembolism observed in the course of MS. We have demonstrated an enhanced platelet reactivity in response to adenosine diphosphate (ADP) in SP MS relative to controls. We have also shown an increased mRNA expression for the P2RY12 gene in both platelets and megakaryocytes, as well as enhanced density of these receptors on the platelet surface. We postulate that one of the reasons for the elevated risk of ischemic events observed in MS may be a genetically or phenotypically reinforced expression of the platelet P2Y12 receptor. In order to analyze the effect of the PAR1 (protease activated receptor type 1) signaling pathway on the expression level of P2Y12, we also analyzed the correlation parameters between P2Y12 expression and the markers of platelet activation in MS induced by selective PAR1 agonist (thrombin receptor activating peptide-6, TRAP-6). Identifying the molecular base responsible for the enlarged pro-thrombotic activity of platelets in SP MS could contribute to the implementation of prevention and targeted treatment, reducing the development of cardiovascular disorders in the course of the disease.
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Mehrabian Z, Guo Y, Miller NR, Henderson AD, Roth S, Bernstein SL. Approaches to Potentiated Neuroprotective Treatment in the Rodent Model of Ischemic Optic Neuropathy. Cells 2021; 10:cells10061440. [PMID: 34207618 PMCID: PMC8228425 DOI: 10.3390/cells10061440] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/31/2021] [Accepted: 06/03/2021] [Indexed: 11/30/2022] Open
Abstract
Nonarteritic anterior ischemic optic neuropathy (NAION) commonly causes sudden optic nerve (ON)-related vision loss. The rodent NAION model (rAION) closely resembles NAION in presentation and physiological responses. We identified early rAION-associated optic nerve head (ONH) inflammatory gene expression responses and the anti-inflammatory prostaglandin PGJ2’s effects on those responses. We hypothesized that blocking pro-inflammatory prostaglandin (PGE2) production by inhibiting monoacylglycerol lipase or cyclooxygenase activity and co-administering PGJ2 would potentiate RGC survival following ischemic neuropathy. Deep sequencing was performed on vehicle- and PGJ2-treated ONHs 3d post-rAION induction. Results were compared against responses from a retinal ischemia model. Animals were treated with PGJ2 and MAGL inhibitor KML29, or PGJ2 + COX inhibitor meloxicam. RGC survival was quantified by stereology. Tissue PG levels were quantified by ELISA. Gene expression was confirmed by qPCR. PGJ2 treatment nonselectively reduced inflammatory gene expression post-rAION. KML29 did not reduce PGE2 1d post-induction and KML29 alone increased RGC loss after rAION. Combined treatments did not improve ONH edema and RGC survival better than reported with PGJ2 alone. KML29′s failure to suppress PGE2 ocular synthesis, despite its purported effects in other CNS tissues may result from alternative PG synthesis pathways. Neither KML29 nor meloxicam treatment significantly improved RGC survival compared with vehicle. While exogenous PGJ2 has been shown to be neuroprotective, treatments combining PGJ2 with these PG synthesis inhibitors do not enhance PGJ2’s neuroprotection.
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Affiliation(s)
- Zara Mehrabian
- Department of Ophthalmology and Visual Sciences, School of Medicine, University of Maryland at Baltimore (UMB), 10 S. Pine St., MSTF Room 5-77B, Baltimore, MD 21201, USA; (Z.M.); (Y.G.)
| | - Yan Guo
- Department of Ophthalmology and Visual Sciences, School of Medicine, University of Maryland at Baltimore (UMB), 10 S. Pine St., MSTF Room 5-77B, Baltimore, MD 21201, USA; (Z.M.); (Y.G.)
| | - Neil R. Miller
- Division of Neuro-Ophthalmology, Wilmer Eye Institute, School of Medicine, Johns Hopkins University, 600 N. Wolfe St., Wilmer 233, Baltimore, MD 21287, USA; (N.R.M.); (A.D.H.)
| | - Amanda D. Henderson
- Division of Neuro-Ophthalmology, Wilmer Eye Institute, School of Medicine, Johns Hopkins University, 600 N. Wolfe St., Wilmer 233, Baltimore, MD 21287, USA; (N.R.M.); (A.D.H.)
| | - Steven Roth
- Department of Anesthesiology, College of Medicine, University of Illinois, Chicago, IL 20212, USA;
| | - Steven L. Bernstein
- Department of Ophthalmology and Visual Sciences, School of Medicine, University of Maryland at Baltimore (UMB), 10 S. Pine St., MSTF Room 5-77B, Baltimore, MD 21201, USA; (Z.M.); (Y.G.)
- Correspondence: ; Tel.: +410-706-3712
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Nango H, Kosuge Y. Present State and Future Perspectives of Prostaglandins as a Differentiation Factor in Motor Neurons. Cell Mol Neurobiol 2021; 42:2097-2108. [PMID: 34032949 DOI: 10.1007/s10571-021-01104-4] [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: 01/26/2021] [Accepted: 05/18/2021] [Indexed: 11/28/2022]
Abstract
Spinal motor neurons have the longest axons that innervate the skeletal muscles of the central nervous system. Motor neuron diseases caused by spinal motor neuron cell death are incurable due to the unique and irreplaceable nature of their neural circuits. Understanding the mechanisms of neurogenesis, neuritogenesis, and synaptogenesis in motor neurons will allow investigators to develop new in vitro models and regenerative therapies for motor neuron diseases. In particular, small molecules can directly reprogram and convert into neural stem cells and neurons, and promote neuron-like cell differentiation. Prostaglandins are known to have a role in the differentiation and tissue regeneration of several cell types and organs. However, the involvement of prostaglandins in the differentiation of motor neurons from neural stem cells is poorly understood. The general cell line used in research on motor neuron diseases is the mouse neuroblastoma and spinal motor neuron fusion cell line NSC-34. Recently, our laboratory reported that prostaglandin E2 and prostaglandin D2 enhanced the conversion of NSC-34 cells into motor neuron-like cells with neurite outgrowth. Moreover, we found that prostaglandin E2-differentiated NSC-34 cells had physiological and electrophysiological properties of mature motor neurons. In this review article, we provide contemporary evidence on the effects of prostaglandins, particularly prostaglandin E2 and prostaglandin D2, on differentiation and neural conversion. We also discuss the potential of prostaglandins as candidates for the development of new therapeutic drugs for motor neuron diseases.
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Affiliation(s)
- Hiroshi Nango
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-shi, Chiba, 274-8555, Japan
| | - Yasuhiro Kosuge
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-shi, Chiba, 274-8555, Japan.
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Mendes FR, Leclerc JL, Liu L, Kamat PK, Naziripour A, Hernandez D, Li C, Ahmad AS, Doré S. Effect of Experimental Ischemic Stroke and PGE2 EP1 Selective Antagonism in Alzheimer's Disease Mouse Models. J Alzheimers Dis 2021; 74:173-187. [PMID: 31985468 DOI: 10.3233/jad-191069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Neuroinflammation has been recognized as an important factor in the pathogenesis of Alzheimer's disease (AD). One of the most recognized pathways in mediating neuroinflammation is the prostaglandin E2-EP1 receptor pathway. OBJECTIVE Here, we examined the efficacy of the selective EP1 antagonist ONO-8713 in limiting amyloid-β (Aβ), lesion volumes, and behavioral indexes in AD mouse models after ischemic stroke. METHODS Transgenic APP/PS1, 3xTgAD, and wildtype (WT) mice were subjected to permanent distal middle cerebral artery occlusion (pdMCAO) and sham surgeries. Functional outcomes, memory, anatomical outcomes, and Aβ concentrations were assessed 14 days after surgery. RESULTS pdMCAO resulted in significant deterioration in functional and anatomical outcomes in the transgenic mice compared with the WT mice. No relevant differences were observed in the behavioral tests when comparing the ONO-8713 and vehicle-treated groups. Significantly lower cavitation (p = 0.0373) and percent tissue loss (p = 0.0247) were observed in APP/PS1 + ONO-8713 mice compared with the WT + ONO-8713 mice. However, the percent tissue injury was significantly higher in APP/PS1 + ONO-8713 mice compared with the WT + ONO-8713 group (p = 0.0373). Percent tissue loss was also significantly lower in the 3xTgAD + ONO-8713 mice than in the WT + ONO-8713 mice (p = 0.0185). ONO-8713 treatment also attenuated cortical microgliosis in APP/PS1 mice as compared with the vehicle (p = 0.0079); however, no differences were observed in astrogliosis across the groups. Finally, APP/PS1 mice presented with characteristic Aβ load in the cortex while 3xTgAD mice exhibited very low Aβ levels. CONCLUSION In conclusion, under the experimental conditions, EP1 receptor antagonist ONO-8713 showed modest benefits in anatomical outcomes after stroke, mainly in APP/PS1 mice.
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Affiliation(s)
- Fúlvio R Mendes
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA.,Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, São Bernardo do Campo, Brazil
| | - Jenna L Leclerc
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA.,Department of Neuroscience, Neurology, Psychiatry, and Center for Translational Research in Neurodegenerative Disease, University of Florida College of Medicine, Gainesville, FL, USA
| | - Lei Liu
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Pradip K Kamat
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Arash Naziripour
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Damian Hernandez
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Chris Li
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Abdullah S Ahmad
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Sylvain Doré
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA.,Department of Neuroscience, Neurology, Psychiatry, and Center for Translational Research in Neurodegenerative Disease, University of Florida College of Medicine, Gainesville, FL, USA
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50
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Yang H, Li GP, Liu Q, Zong SB, Li L, Xu ZL, Zhou J, Cao L, Wang ZZ, Zhang QC, Li M, Fan QR, Hu HF, Xiao W. Neuroprotective effects of Ginkgolide B in focal cerebral ischemia through selective activation of prostaglandin E2 receptor EP4 and the downstream transactivation of epidermal growth factor receptor. Phytother Res 2021; 35:2727-2744. [PMID: 33452698 DOI: 10.1002/ptr.7018] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 12/28/2020] [Accepted: 12/31/2020] [Indexed: 11/07/2022]
Abstract
The present study was undertaken to identify whether prostaglandin E2 receptor is the potential receptor/binding site for Ginkgolide A, Ginkgolide B, Ginkgolide K, and Bilobalide, the four main ingredients of the Ginkgo biloba L., leaves. Using functional assays, we identified EP4, coupled with Gs protein, as a target of Ginkgolide B. In human neuroblastoma SH-SY5Y cells suffered from oxygen-glucose deprivation/reperfusion, Ginkgolide B-activated PKA, Akt, and ERK1/2 as well as Src-mediated transactivation of epidermal growth factor receptor. These resulted in downstream signaling pathways, which enhanced cell survival and inhibited apoptosis. Knockdown of EP4 prevented Ginkgolide B-mediated Src, epidermal growth factor receptor (EGFR), Akt, and ERK1/2 phosphorylation and neuroprotective effects. Moreover, Src inhibitor prevented Ginkgolide B-mediated EGFR transactivation and the downstream Akt and ERK1/2 activation, while the phosphorylation of PKA induced by Ginkgolide B was not affected, indicating Ginkgolide B might transactivate EGFR in a ligand-independent manner. EP4 knockdown in a rat middle cerebral artery occlusion (MCAO) model prevented Ginkgolide B-mediated infarct size reduction and neurological assessment improvement. At the same time, the increased expressions of p-Akt, p-ERK1/2, p-PKA, p-Src, and p-EGFR and the deceased expression of cleaved capases-3 induced by Ginkgolide B in cerebral cortex were blocked due to EP4 knockdown. In conclusion, Ginkgolide B exerts neuroprotective effects in rat MCAO model through the activation of EP4 and the downstream transactivation of EGFR.
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Affiliation(s)
- Hao Yang
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Gui-Ping Li
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Qiu Liu
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Shao-Bo Zong
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Liang Li
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Zhi-Liang Xu
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Jun Zhou
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Liang Cao
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Zhen-Zhong Wang
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Quan-Chang Zhang
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Ming Li
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Qi-Ru Fan
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Han-Fei Hu
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
| | - Wei Xiao
- State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutic Process, Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, China
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