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A Multi-Target and Multi-Channel Mechanism of Action for Jiawei Yinhuo Tang in the Treatment of Social Communication Disorders in Autism: Network Pharmacology and Molecular Docking Studies. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:4093138. [PMID: 35178102 PMCID: PMC8846994 DOI: 10.1155/2022/4093138] [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: 10/08/2021] [Revised: 12/22/2021] [Accepted: 01/03/2022] [Indexed: 12/18/2022]
Abstract
Background Autism spectrum disorder (ASD) is a highly heterogeneous neurodevelopmental disorder with complex pathogenesis. Currently, the pathogenesis of ASD is not fully understood. Moreover, current treatments do not effectively alleviate the primary symptoms of ASD social disorder (SCDA). Jiawei Yinhuo Tang (JWYHT) is an improved version of the classic prescription Yinhuo Tang. Although this medication has been shown to improve social behavior in ASD patients, the mechanism by which it works remains unknown. Methods In this study, network pharmacology bioinformatics analysis was used to identify the key targets, biological functions, and signal pathways of JWYHT in SCDA. Then, molecular docking and molecular dynamic simulation were used to validate the activity and stability of the active ingredient and the target protein during the binding process. Results The analysis identified 157 key targets and 9 core targets of JWYHT (including proto-oncogene (FOS), caspase 3 (CASP3), mitogen-activated protein kinase-3 (MAPK3), interleukin-6 (IL6), mitogen-activated protein kinase-1 (MAPK1), tumor necrosis factor (TNF), mitogen-activated protein kinase-8 (MAPK8), AKT serine/threonine kinase 1 (AKT1), and 5-hydroxytryptamine receptor 1B (5HT1B)) in SCDA. In addition, the Kyoto Encyclopedia of Gene and Genome results, as well as the staggering network analyses, revealed 20 biological processes and 20 signal pathways targeted by JWYHT in SCDA. Finally, molecular docking analysis was used to determine the binding activity of the main active components of JWYHT to the key targets. The binding activity and stability of methyl arachidonate and MAPK8 were demonstrated using molecular dynamics simulation. Conclusion This study demonstrates that JWYHT regulates neuronal development, synaptic transmission, intestinal and cerebral inflammatory response, and other processes in SCDA.
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Li D, Luo F, Guo T, Han S, Wang H, Lin Q. Targeting NF-κB pathway by dietary lignans in inflammation: expanding roles of gut microbiota and metabolites. Crit Rev Food Sci Nutr 2022; 63:5967-5983. [PMID: 35068283 DOI: 10.1080/10408398.2022.2026871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Inflammation is a major factor affecting human health. Nuclear factor-kappa B (NF-κB) plays a vital role in the development of inflammation, and the promoters of most inflammatory cytokine genes have NF-κB-binding sites. Targeting NF-κB could be an exciting route for the prevention and treatment of inflammatory diseases. As important constituents of natural plants, lignans are proved to have numerous biological functions. There are growing pieces of evidence demonstrate that lignans have the potential anti-inflammatory activities. In this work, the type, structure and source of lignans and the influence on mitigating the inflammation are systematically summarized. This review focuses on the targeting NF-κB signaling pathway in the inflammatory response by different lignans and their molecular mechanisms. Lignans also regulate gut microflora and change gut microbial metabolites, which exert novel pathway to prevent NF-κB activation. Taken together, lignans target NF-κB with various mechanisms to inhibit inflammatory cytokine expressions in the inflammatory response. It will provide a scientific theoretical basis for further research on the anti-inflammatory effects of lignans and the development of functional foods.
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Affiliation(s)
- Dan Li
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Feijun Luo
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Tianyi Guo
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Shuai Han
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Hanqing Wang
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Qinlu Lin
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
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Comparative study of the photo‑protective and anti‑melanogenic properties of gomisin D, J and O. Mol Med Rep 2021; 25:8. [PMID: 34751410 PMCID: PMC8600414 DOI: 10.3892/mmr.2021.12524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 10/20/2021] [Indexed: 11/18/2022] Open
Abstract
Skin cancer is the most common human malignancy worldwide and solar ultraviolet (UV) radiation is known to serve an important role in its pathogenesis. Natural candidate compounds with antioxidant, photoprotective and anti-melanogenic effects were investigated against the background of skin photoprotective and anti-melanogenic properties. Gomisin D, J and O are dibenzocyclooctadiene lignans present in Kadsura medicinal plants and possess several pharmacological activities. In this study, the functions and mechanisms underlying the effects of gomisin D, J and O in UVA-and UVB-irradiated keratinocytes and α-melanocyte stimulating hormone (α-MSH)-stimulated melanocytes were explored. Following UVA and UVB irradiation, keratinocytes were treated with gomisin D, J and O, and keratinocyte viability, lactate dehydrogenase (LDH) release, intracellular reactive oxygen species (ROS) production and apoptosis were examined. The results demonstrated that gomisin D and J improved keratinocyte viability and reduced LDH release under UVA and UVB irradiation. Intracellular ROS production induced by UVA and UVB irradiation was suppressed by gomisin D and J. In addition, Annexin V and TUNEL staining analysis indicated that gomisin D and J have significant anti-apoptotic effects on UVA-and UVB-irradiated keratinocytes. After α-MSH stimulation, melanocytes were treated with gomisin D, J and O, and the changes in melanocyte viability, intracellular melanin content, intracellular tyrosinase activity, and mechanisms underlying these changes were examined. Gomisin D markedly inhibited the α-MSH-induced increase in intracellular melanin content and tyrosinase activity. Mechanistically, gomisin D reduced the protein and mRNA expression levels of microphthalmia-associated transcription factor (MITF), tyrosinase, tyrosinase-related protein (TRP)-1 and TRP-2 in α-MSH-stimulated melanocytes. In addition, gomisin D markedly downregulated α-MSH-induced phosphorylation of protein kinase A and cAMP response element binding protein, which are known to be present upstream of the MITF, tyrosinase, TRP-1 and TRP-2 genes. Overall, gomisin D has photoprotective and anti-melanogenic effects; these findings provide a basis for the production of potential brightening and photoprotective agents using natural compounds such as gomisin D.
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Sharma V, Kaur A, Singh TG. Counteracting role of nuclear factor erythroid 2-related factor 2 pathway in Alzheimer's disease. Biomed Pharmacother 2020; 129:110373. [PMID: 32603894 DOI: 10.1016/j.biopha.2020.110373] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/01/2020] [Accepted: 06/02/2020] [Indexed: 12/30/2022] Open
Abstract
A salient pathological features in Alzheimer's disease includes redox impairment and neuroinflammation. Nuclear factor erythroid 2-related factor 2 (Nrf2) and Nuclear factor kappa B (NF-ҡB) are the two key transcription factors that regulate cellular responses to redox impairment and neuroinflammation respectively. An effective way to confer neuroprotection in central nervous system (CNS) is the activation of a transcription factor i.e Nuclear factor erythroid 2-related factor 2 (Nrf2). An enhancer element known as Antioxidant Response Element (ARE) mediates the expression of phase II detoxification enzymes. Nrf2 is a nuclear transcription factor that binds to ARE thereby transcribing expression of several antioxidant genes. Kelch ECH associating protein-1 (Keap1), a culin 3-based E3 ligase, polyubiquitinates Nrf2 and targets it for its degradation. Disruption in the interaction between Keap1/Nrf2 can increase the brain's endogenous antioxidant capacity and thereby responsible for cell defence against oxidative stress and neuroinflammation in Alzheimer's disease (AD). The current review discusses about Keap1-Nrf2-ARE structure and function with special emphasis on the various pathways involved in positive and negative modulation of Nrf2, namely Phosphoinositide 3- kinase (PI3K), Glycogen synthase kinase-3β (GSK-3β), Nuclear factor kappa-b (NF-ҡb), Janus kinase/signal transducer and activator of transcription (JAK-STAT),Tumour Necrosis Factor- α (TNF-α), p38Mitogen-activated protein kinases (p38MAPK), Cyclic AMP response element binding protein (CREB) and intrinsic & extrinsic apoptotic pathway. Furthermore, this review highlights the miscellaneous Nrf2 activators as promising therapeutic agents for slowingdown the progression of AD.
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Affiliation(s)
- Veerta Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Amarjot Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
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Lin FL, Yen JL, Kuo YC, Kang JJ, Cheng YW, Huang WJ, Hsiao G. HADC8 Inhibitor WK2-16 Therapeutically Targets Lipopolysaccharide-Induced Mouse Model of Neuroinflammation and Microglial Activation. Int J Mol Sci 2019; 20:ijms20020410. [PMID: 30669368 PMCID: PMC6359084 DOI: 10.3390/ijms20020410] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/14/2019] [Accepted: 01/15/2019] [Indexed: 12/21/2022] Open
Abstract
Glial activation and neuroinflammatory processes play important roles in the pathogenesis of brain abscess and neurodegenerative diseases. Activated glial cells can secrete various proinflammatory cytokines and neurotoxic mediators, which contribute to the exacerbation of neuronal cell death. The inhibition of glial activation has been shown to alleviate neurodegenerative conditions. The present study was to investigate the specific HDAC8 inhibitor WK2-16, especially its effects on the neuroinflammatory responses through glial inactivation. WK2-16 significantly reduced the gelatinolytic activity of MMP-9, and expression of COX-2/iNOS proteins in striatal lipopolysaccharide (LPS)-induced neuroinflammation in C57BL/6 mice. The treatment of WK2-16 markedly improved neurobehavioral deficits. Immunofluorescent staining revealed that WK2-16 reduced LPS-stimulated astrogliosis and microglial activation in situ. Consistently, cellular studies revealed that WK2-16 significantly suppressed LPS-induced mouse microglia BV-2 cell proliferation. WK2-16 was proven to concentration-dependently induce the levels of acetylated SMC3 in microglial BV-2 cells. It also reduced the expression of COX-2/iNOS proteins and TNF-α production in LPS-activated microglial BV-2 cells. The signaling studies demonstrated that WK2-16 markedly inhibited LPS-activated STAT-1/-3 and Akt activation, but not NF-κB or MAPK signaling. In summary, the HDAC8 inhibitor WK2-16 exhibited neuroprotective effects through its anti-neuroinflammation and glial inactivation properties, especially in microglia in vitro and in vivo.
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Affiliation(s)
- Fan-Li Lin
- School of Pharmaceutical Sciences, National Yang-Ming University, Taipei 112-21, Taiwan.
- Graduate Institute of Medical Sciences and Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110-31, Taiwan.
| | - Jing-Lun Yen
- Graduate Institute of Medical Sciences and Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110-31, Taiwan.
| | - Yu-Cheng Kuo
- Graduate Institute of Medical Sciences and Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110-31, Taiwan.
| | - Jaw-Jou Kang
- School of Pharmaceutical Sciences, National Yang-Ming University, Taipei 112-21, Taiwan.
| | - Yu-Wen Cheng
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110-31, Taiwan.
| | - Wei-Jan Huang
- Graduate Institute of Pharmacognosy, College of Pharmacy, Taipei Medical University, Taipei 110-31, Taiwan.
| | - George Hsiao
- Graduate Institute of Medical Sciences and Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110-31, Taiwan.
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Wang H, Huang W, Liang M, Shi Y, Zhang C, Li Q, Liu M, Shou Y, Yin H, Zhu X, Sun X, Hu Y, Shen Z. (+)-JQ1 attenuated LPS-induced microglial inflammation via MAPK/NFκB signaling. Cell Biosci 2018; 8:60. [PMID: 30479742 PMCID: PMC6245926 DOI: 10.1186/s13578-018-0258-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 11/13/2018] [Indexed: 01/10/2023] Open
Abstract
Background Microglia activation is a crucial event in neurodegenerative disease. The depression of microglial inflammatory response is considered a promising therapeutic strategy. NFκB signaling, including IKK/IκB phosphotylation, p65 nucelus relocalization and NFκB-related genes transcription are prevalent accepted to play important role in microglial activation. (+)-JQ1, a BRD4 inhibitor firstly discovered as an anti-tumor agent, was later confirmed to be an anti-inflammatory compound. However, its anti-inflammatory effect in microglia and central neural system remains unclear. Results In the current work, microglial BV2 cells were applied and treatment with lipopolysaccharide (LPS) to induce inflammation and later administered with (+)-JQ1. In parallel, LPS and (+)-JQ1 was intracerebroventricular injected in IL-1β-luc transgenic mice, followed by fluorescence evaluation and brain tissue collection. Results showed that (+)-JQ1 treatment could significantly reduce LPS induced transcription of inflammatory cytokines both in vitro and in vivo. (+)-JQ1 could inhibit LPS induced MAPK but not PI3K signaling phosphorylation, NFκB relocalization and transcription activity. In animal experiments, (+)-JQ1 postponed LPS induced microglial and astrocytes activation, which was also dependent on MAPK/NFκB signaling. Conclusions Thus, our data demonstrated that (+)-JQ1 could inhibit LPS induced microglia associated neuroinflammation, via the attenuation of MAPK/NFκB signaling.
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Affiliation(s)
- Huanhuan Wang
- 1School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - Wenhai Huang
- 2Institute of Materia Medica, Zhejiang Academy of Medical Sciences, No. 182, Tianmushan Road, Hangzhou, 310013 China
| | - Meihao Liang
- 2Institute of Materia Medica, Zhejiang Academy of Medical Sciences, No. 182, Tianmushan Road, Hangzhou, 310013 China
| | - Yingying Shi
- 1School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - Chixiao Zhang
- 2Institute of Materia Medica, Zhejiang Academy of Medical Sciences, No. 182, Tianmushan Road, Hangzhou, 310013 China
| | - Qin Li
- 2Institute of Materia Medica, Zhejiang Academy of Medical Sciences, No. 182, Tianmushan Road, Hangzhou, 310013 China
| | - Meng Liu
- 1School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - Yikai Shou
- 1School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - Hongping Yin
- 1School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - Xiaozheng Zhu
- 1School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - Xiaoyan Sun
- 3School of Information Science and Engineering, Hangzhou Normal University, Hangzhou, China
| | - Yu Hu
- 1School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - Zhengrong Shen
- 2Institute of Materia Medica, Zhejiang Academy of Medical Sciences, No. 182, Tianmushan Road, Hangzhou, 310013 China
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Chen S, Ye J, Chen X, Shi J, Wu W, Lin W, Lin W, Li Y, Fu H, Li S. Valproic acid attenuates traumatic spinal cord injury-induced inflammation via STAT1 and NF-κB pathway dependent of HDAC3. J Neuroinflammation 2018; 15:150. [PMID: 29776446 PMCID: PMC5960086 DOI: 10.1186/s12974-018-1193-6] [Citation(s) in RCA: 181] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 05/08/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Microglial polarization with M1/M2 phenotype shifts and the subsequent neuroinflammatory responses are vital contributing factors for spinal cord injury (SCI)-induced secondary injury. Nuclear factor-κB (NF-κB) is considered the central transcription factor of inflammatory mediators, which plays a crucial role in microglial activation. Lysine acetylation of STAT1 seems necessary for NF-kB pathway activity, as it is regulated by histone deacetylases (HDACs). There have been no studies that have explained if HDAC inhibition by valproic acid (VPA) affects the NF-κB pathway via acetylation of STAT1 dependent of HDAC activity in the microglia-mediated central inflammation following SCI. We investigated the potential molecular mechanisms that focus on the phenotypic transition of microglia and the STAT1-mediated NF-κB acetylation after a VPA treatment. METHODS The Basso-Beattie-Bresnahan locomotion scale, the inclined plane test, the blood-spinal cord barrier, and Nissl staining were employed to determine the neuroprotective effects of VPA treatment after SCI. Assessment of microglia polarization and pro-inflammatory markers, such as tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6, and interferon (INF)-γ was used to evaluate the neuroinflammatory responses and the anti-inflammatory effects of VPA treatment. Immunofluorescent staining and Western blot analysis were used to detect HDAC3 nuclear translocation, activity, and NF-κB signaling pathway activation to evaluate the effects of VPA treatment. The impact of STAT1 acetylation on NF-kB pathway and the interaction between STAT1 and NF-kB were assessed to evaluate anti-inflammation effects of VPA treatment and also whether these effects were dependent on a STAT1/NF-κB pathway to gain further insight into the mechanisms underlying the development of the neuroinflammatory response after SCI. RESULTS The results showed that the VPA treatment promoted the phenotypic shift of microglia from M1 to M2 phenotype and inhibited microglial activation, thus reducing the SCI-induced inflammatory factors. The VPA treatment upregulation of the acetylation of STAT1/NF-κB pathway was likely caused by the HDAC3 translocation to the nucleus and activity. These results indicated that the treatment with the VPA suppressed the expression and the activity of HDAC3 and enhanced STAT1, as well as NF-κB p65 acetylation following a SCI. The acetylation status of NF-kB p65 and the complex with NF-κB p65 and STAT1 inhibited the NF-kB p65 transcriptional activity and attenuated the microglia-mediated central inflammatory response following SCI. CONCLUSIONS These results suggested that the VPA treatment attenuated the inflammatory response by modulating microglia polarization through STAT1-mediated acetylation of the NF-κB pathway, dependent of HDAC3 activity. These effects led to neuroprotective effects following SCI.
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Affiliation(s)
- Shoubo Chen
- Department of Orthopaedics, The Second Affiliated Hospital, Fujian Medical Universityz, Quanzhou, 362000, Fujian Province, China
| | - Jingfang Ye
- Department of nursing faculty, Quanzhou Medical College, Quanzhou, 362000, Fujian Province, China
| | - Xiangrong Chen
- Department of Neurosurgery, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, 362000, Fujian Province, China.
| | - Jinnan Shi
- Department of Orthopaedics, The Second Affiliated Hospital, Fujian Medical Universityz, Quanzhou, 362000, Fujian Province, China
| | - Wenhua Wu
- Department of Orthopaedics, The Second Affiliated Hospital, Fujian Medical Universityz, Quanzhou, 362000, Fujian Province, China
| | - Wenping Lin
- Department of Orthopaedics, The Second Affiliated Hospital, Fujian Medical Universityz, Quanzhou, 362000, Fujian Province, China
| | - Weibin Lin
- Department of Neurosurgery, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, 362000, Fujian Province, China
| | - Yasong Li
- Department of Neurosurgery, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, 362000, Fujian Province, China
| | - Huangde Fu
- Department of Neurosurgery, Affiliated Hospital of YouJiang Medical University for Nationalities, Baise, 533000, Guangxi Province, China
| | - Shun Li
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, Sichuan Province, China.
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Ran J, Ma C, Xu K, Xu L, He Y, Moqbel SAA, Hu P, Jiang L, Chen W, Bao J, Xiong Y, Wu L. Schisandrin B ameliorated chondrocytes inflammation and osteoarthritis via suppression of NF-κB and MAPK signal pathways. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:1195-1204. [PMID: 29785089 PMCID: PMC5953308 DOI: 10.2147/dddt.s162014] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Introduction Osteoarthritis (OA) is the most prevalent joint disorder in the elderly population, and inflammatory mediators like IL-1β were thought to play central roles in its development. Schisandrin B, the main active component derived from Schisandra chinensis, exhibited anti-oxidative and antiinflammatory properties. Methods In the present study, the protective effect and the underlying mechanism of Schisan-drin B on OA was investigated in vivo and in vitro. Results The results showed that Schisandrin B decreased IL-1β-induced upregulation of matrix metalloproteinase 3 (MMP3), MMP13, IL-6, and inducible nitric oxide synthase (iNOS) and increased IL-1β-induced downregulation of collagen II, aggrecan, and sox9 as well. Schisandrin B significantly decreased IL-1β-induced p65 phosphorylation and nuclear translocation of p65 in rat chondrocytes. Mitogen-activated protein kinase (MAPK) activation was also inhibited by Schisandrin B, as evidenced by the reduction of p38, extracellular signal-regulated kinase (Erk), and c-Jun amino-terminal kinase (Jnk) phosphorylation. In addition, Schisandrin B prevented cartilage degeneration in rat OA model with significantly lower Mankin’s score than the control group. Conclusion Our study demonstrated that Schisandrin B ameliorated chondrocytes inflammation and OA via suppression of nuclear factor-κB (NF-κB) and MAPK signal pathways, indicating a therapeutic potential in OA treatment.
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Affiliation(s)
- Jisheng Ran
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Chiyuan Ma
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Kai Xu
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Langhai Xu
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yuzhe He
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Safwat Adel Abdo Moqbel
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Pengfei Hu
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Lifeng Jiang
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Weiping Chen
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jiapeng Bao
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yan Xiong
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Lidong Wu
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Caplan IF, Maguire-Zeiss KA. Toll-Like Receptor 2 Signaling and Current Approaches for Therapeutic Modulation in Synucleinopathies. Front Pharmacol 2018; 9:417. [PMID: 29780321 PMCID: PMC5945810 DOI: 10.3389/fphar.2018.00417] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Accepted: 04/10/2018] [Indexed: 12/18/2022] Open
Abstract
The innate immune response in the central nervous system (CNS) is implicated as both beneficial and detrimental to health. Integral to this process are microglia, the resident immune cells of the CNS. Microglia express a wide variety of pattern-recognition receptors, such as Toll-like receptors, that detect changes in the neural environment. The activation of microglia and the subsequent proinflammatory response has become increasingly relevant to synucleinopathies, including Parkinson's disease the second most prevalent neurodegenerative disease. Within these diseases there is evidence of the accumulation of endogenous α-synuclein that stimulates an inflammatory response from microglia via the Toll-like receptors. There have been recent developments in both new and old pharmacological agents designed to target microglia and curtail the inflammatory environment. This review will aim to delineate the process of microglia-mediated inflammation and new therapeutic avenues to manage the response.
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Affiliation(s)
- Ian F Caplan
- Biology Department, Georgetown University, Washington, DC, United States
| | - Kathleen A Maguire-Zeiss
- Biology Department, Georgetown University, Washington, DC, United States.,Department of Neuroscience, Georgetown University Medical Center, Washington, DC, United States
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Sowndhararajan K, Deepa P, Kim M, Park SJ, Kim S. An overview of neuroprotective and cognitive enhancement properties of lignans from Schisandra chinensis. Biomed Pharmacother 2017; 97:958-968. [PMID: 29136774 DOI: 10.1016/j.biopha.2017.10.145] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/23/2017] [Accepted: 10/24/2017] [Indexed: 01/17/2023] Open
Abstract
Schisandra chinensis fruits have been traditionally used for thousands of years in Korea, China and Japan to treat various ailments. The fruits contain a variety of bioactive metabolites, especially lignan components have been reported to have various biological activities and have potential in the treatment of numerous neurodegenerative diseases. The lignans from S. chinensis are mainly grouped under dibenzocyclooctadiene lignans. Previous studies have reported that the crude extracts and the isolated pure lignan components effectively protect the neuronal cell damage and significantly enhance the cognitive performances. The experimental findings support the extracts and lignan components from S. chinensis can be used as new therapeutic agents to treat various neurodegenerative diseases. In the current review, we highlight the lignans from S. chinensis as promising resources for the development of natural and effective agents for neuroprotective and cognitive enhancement effects. The lignan extracts and individual compounds from S. chinensis were summarized in relation to their neuroprotective and cognitive enhancement activities.
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Affiliation(s)
- Kandhasamy Sowndhararajan
- School of Natural Resources and Environmental Sciences, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Ponnuvel Deepa
- School of Natural Resources and Environmental Sciences, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Minju Kim
- School of Natural Resources and Environmental Sciences, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Se Jin Park
- School of Natural Resources and Environmental Sciences, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Songmun Kim
- School of Natural Resources and Environmental Sciences, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea.
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Shi YW, Zhang XC, Chen C, Tang M, Wang ZW, Liang XM, Ding F, Wang CP. Schisantherin A attenuates ischemia/reperfusion-induced neuronal injury in rats via regulation of TLR4 and C5aR1 signaling pathways. Brain Behav Immun 2017; 66:244-256. [PMID: 28690033 DOI: 10.1016/j.bbi.2017.07.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 06/25/2017] [Accepted: 07/05/2017] [Indexed: 01/24/2023] Open
Abstract
Toll-like receptor 4 (TLR4) and C5aR1 (CD88) have been recognized as potential therapeutic targets for the reduction of inflammation and secondary damage and improvement of outcome after ischemia and reperfusion (I/R). The inflammatory responses which induce cell apoptosis and necrosis after I/R brain injury lead to a limited process of neural repair. To further comprehend how these targets function in I/R state, we investigated the pathological changes and TLR4 and C5aR1 signaling pathways in vitro and in vivo models of I/R brain injury in this study. Meanwhile, we explored the roles of schisantherin A on I/R brain injury, and whether it exerted neuroprotective effects by regulating the TLR4 and C5aR1 signaling pathways or not. The results showed that schisantherin A significantly reduced the neuronal apoptosis induced by oxygen and glucose deprivation and reperfusion (OGD/R) injury in primary culture of rat cortical neurons. Also, schisantherin A alleviated neurological deficits, reduced infarct volume, attenuated oxidation stress, inflammation and apoptosis in ischemic parietal cortex of rats after middle cerebral artery occlusion and reperfusion (MCAO/R) injury. Moreover, the activated TLR4 and C5aR1 signaling pathways were inhibited by schisantherin A treatment. In conclusion, TLR4 and C5aR1 played a vital role during I/R brain injury in rats, and schisantherin A exhibited neuroprotective effects by TLR4 and C5aR1 signaling pathways. These findings also provided new insights that would aid in elucidating the effect of schisantherin A against cerebral I/R and support the development of schisantherin A as a potential treatment for ischemic stroke.
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Affiliation(s)
- Yun Wei Shi
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, No. 19, Qixiu Road, Nantong, Jiangsu 226001, PR China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, PR China
| | - Xiao Chuan Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, No. 19, Qixiu Road, Nantong, Jiangsu 226001, PR China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, PR China
| | - Chen Chen
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, No. 19, Qixiu Road, Nantong, Jiangsu 226001, PR China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, PR China
| | - Miao Tang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, No. 19, Qixiu Road, Nantong, Jiangsu 226001, PR China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, PR China
| | - Zhi Wei Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, No. 19, Qixiu Road, Nantong, Jiangsu 226001, PR China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, PR China; Department of Pharmacology, University of California, Irvine, CA 92697, USA
| | - Xin Miao Liang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, No. 19, Qixiu Road, Nantong, Jiangsu 226001, PR China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, PR China; Dalian Institute of Chemical Physics, the Chinese Academy of Sciences, Dalian, Liaoning 116023, PR China.
| | - Fei Ding
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, No. 19, Qixiu Road, Nantong, Jiangsu 226001, PR China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, PR China.
| | - Cai Ping Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, No. 19, Qixiu Road, Nantong, Jiangsu 226001, PR China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, PR China.
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Abstract
Gomisin N, which is a lignan isolated from Schisandra chinensis, has some pharmacological effects. However, the anti-inflammatory effects of gomisin N on periodontal disease are uncertain. The aim of this study was to examine the effect of gomisin N on inflammatory mediator production in tumor necrosis factor (TNF)-α-stimulated human periodontal ligament cells (HPDLC). Gomisin N inhibited interleukin (IL)-6, IL-8, CC chemokine ligand (CCL) 2, and CCL20 production in TNF-α-stimulated HPDLC in a dose-dependent manner. Moreover, we revealed that gomisin N could suppress extracellular signal-regulated kinase (ERK) and c-Jun N terminal kinase (JNK) phosphorylation in TNF-α-stimulated HPDLC though protein kinase B (Akt) phosphorylation was not suppressed by gomisin N treatment. In summary, gomisin N might exert anti-inflammatory effects by attenuating cytokine production in periodontal ligament cells via inhibiting the TNF-α-stimulated ERK and JNK pathways activation.
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Jung JS, Choi MJ, Lee YY, Moon BI, Park JS, Kim HS. Suppression of Lipopolysaccharide-Induced Neuroinflammation by Morin via MAPK, PI3K/Akt, and PKA/HO-1 Signaling Pathway Modulation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:373-382. [PMID: 28032996 DOI: 10.1021/acs.jafc.6b05147] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Morin is a flavonoid isolated from certain fruits and Chinese herbs and is known to possess various medicinal properties. In this study, we investigated the anti-inflammatory effects of morin on lipopolysaccharide (LPS)-induced microglial activation, both in vitro and in vivo. We found that morin inhibited inducible nitric oxide synthase (iNOS) and pro-inflammatory cytokines in LPS-stimulated BV2 microglial cells. Furthermore, morin suppressed the microglial activation and cytokine expression in the brains of LPS-stimulated mice. Subsequent mechanistic studies revealed that morin inhibited the action of LPS-activated mitogen-activated protein kinases (MAPKs), protein kinase B (Akt) phosphorylation, nuclear factor-κB (NF-κB), and activating protein-1 (AP-1). Further, the phosphorylation and DNA binding activity of cAMP responsive element binding protein (CREB) was enhanced by morin. Moreover, morin suppressed the LPS-induced expression of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase subunits, while it increased heme oxygenase-1 (HO-1) expression and nuclear factor erythroid 2-related factor 2 (Nrf2) activation. Therefore, our data suggest that morin exerts anti-inflammatory effects in LPS-stimulated microglia by downregulating MAPK and phosphatidylinositol 3-kinase (PI3K)/Akt signaling pathways while upregulating protein kinase A (PKA)/CREB and Nrf2/HO-1 signaling pathways.
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Affiliation(s)
- Ji-Sun Jung
- Division of Functional Food Research, Korea Food Research Institute , Gyeonggi-do 463-746, Republic of Korea
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Lee DS, Jeong GS. Butein provides neuroprotective and anti-neuroinflammatory effects through Nrf2/ARE-dependent haem oxygenase 1 expression by activating the PI3K/Akt pathway. Br J Pharmacol 2016; 173:2894-909. [PMID: 27465039 PMCID: PMC5055139 DOI: 10.1111/bph.13569] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 07/12/2016] [Accepted: 07/16/2016] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Butein, 3,4,2',4'-tetrahydroxychalcone, has various pharmacological effects. However, no study has demonstrated the specific neurobiological mechanisms of the effects of butein in neuronal cells. The present study examined the role of butein as an antioxidative and anti-inflammatory inducer of haem oxygenase 1 (HO1) in mouse hippocampal HT22, BV2 microglial and primary mouse hippocampus neurons. EXPERIMENTAL APPROACH We investigated the neuroprotective effects of butein on glutamate-induced HT22 cell and primary mouse hippocampal neuron death and its anti-neuroinflammatory effects on LPS-induced activation of BV2 cells. We elucidated the underlying mechanisms by assessing the involvement of NF-κB, HO1, nuclear factor-E2-related factor 2 (Nrf2) and Akt signalling. KEY RESULTS Butein decreased cellular oxidative injury and the production of ROS in glutamate-treated HT22 cells and primary mouse hippocampal neurons. Furthermore, butein suppressed LPS-induced pro-inflammatory enzymes and mediators in BV2 microglia. Butein inhibited IL-6, IL-1β and TNF-α production and mRNA expression. In addition, butein decreased NO and PGE2 production and inducible NOS and COX-2 expression through the NF-κB signalling pathway. Butein up-regulated Nrf2/ARE-mediated HO1 expression through the PI3K/Akt pathway and this was positively associated with its cytoprotective effects and anti-neuroinflammatory actions. CONCLUSION AND IMPLICATIONS Our results indicate that butein effectively prevents glutamate-induced oxidative damage and LPS-induced activation and that the induction of HO1 by butein through the PI3K/Akt pathway and Nrf2 activation appears to play a pivotal role in its effects on neuronal cells. Our results provide evidence for the neuroprotective properties of butein.
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Affiliation(s)
- Dong-Sung Lee
- College of Pharmacy, Chosun University, Gwangju, Korea
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ZHANG MINGHAO, WANG XIUYU, BAI BIN, ZHANG RUI, LI YUNHONG, WANG YIN. Oxymatrine protects against sepsis-induced myocardial injury via inhibition of the TNF-α/p38-MAPK/caspase-3 signaling pathway. Mol Med Rep 2016; 14:551-9. [DOI: 10.3892/mmr.2016.5250] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Accepted: 02/22/2016] [Indexed: 11/06/2022] Open
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Cucurbitacins attenuate microglial activation and protect from neuroinflammatory injury through Nrf2/ARE activation and STAT/NF-κB inhibition. Neurosci Lett 2015; 609:129-36. [PMID: 26472707 DOI: 10.1016/j.neulet.2015.10.022] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 09/30/2015] [Accepted: 10/07/2015] [Indexed: 02/04/2023]
Abstract
Emerging evidence suggests that neuroinflammatory responses are involved in the neuronal injury. Neuroinflammatory response is mediated by cellular components such as microglia and molecular components, including nitric oxide, prostaglandins and inflammatory cytokines, activation of complement proteins etc. Cucurbitacins is a class of highly oxidized tetracyclic triterpenoids isolated mainly from Cucurbitaceae but also from other plan families and has been reported to have pharmacological activities. The present study aimed to investigate the anti-neuroinflammatory effects of Cucurbitacins on TLR 2/4 agonists (amyloid-β, LTA, and LPS)-induced neuroinflammatory response in microglia and the underlying mechanism for Nrf2/ARE pathways. Results indicates that pretreatment with Cucurbitacins significantly reduced the pro-inflammatory cytokine (TNF-α, IL-1β and IL-6) and attenuated iNOS and COX-2 expression in TLR 2/4 agonists-stimulated microglia. In addition, Cucurbitacins inhibited JNK and p38 MAPKs activation and attenuated JAK-STAT and NF-κB activation in TLR 2/4 agonists-stimulated microglia. Next, we evaluate the potential involvement of Cucurbitacins in the activation of Nrf2/ARE signaling pathways and phase II detoxification enzymes activity. Results indicate that Cucurbitacins markedly promoted the activation of Nrf-2/ARE pathway-related downstream factors including NQO-1 and HO-1. Furthermore, anti-neuroinflammatory effects of Cucurbitacins are attenuated in the knockdown of Nrf2, HO-1 and NQO-1 respectively. Cucurbitacins also has neuroprotective effect against microglia over-activation related neuronal damage. This study demonstrates that Cucurbitacins is potent activator of the Nrf2/ARE pathway and is therapeutically relevant not only to neuroinflammatory responses of microglia but also neuroinflammation mediated neuronal injury.
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PKA reduces the rat and human KCa3.1 current, CaM binding, and Ca2+ signaling, which requires Ser332/334 in the CaM-binding C terminus. J Neurosci 2015; 34:13371-83. [PMID: 25274816 DOI: 10.1523/jneurosci.1008-14.2014] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The Ca(2+)-dependent K(+) channel, KCa3.1 (KCNN4/IK/SK4), is widely expressed and contributes to cell functions that include volume regulation, migration, membrane potential, and excitability. KCa3.1 is now considered a therapeutic target for several diseases, including CNS disorders involving microglial activation; thus, we need to understand how KCa3.1 function is regulated. KCa3.1 gating and trafficking require calmodulin binding to the two ends of the CaM-binding domain (CaMBD), which also contains three conserved sites for Ser/Thr kinases. Although cAMP protein kinase (PKA) signaling is important in many cells that use KCa3.1, reports of channel regulation by PKA are inconsistent. We first compared regulation by PKA of native rat KCa3.1 channels in microglia (and the microglia cell line, MLS-9) with human KCa3.1 expressed in HEK293 cells. In all three cells, PKA activation with Sp-8-Br-cAMPS decreased the current, and this was prevented by the PKA inhibitor, PKI14-22. Inhibiting PKA with Rp-8-Br-cAMPS increased the current in microglia. Mutating the single PKA site (S334A) in human KCa3.1 abolished the PKA-dependent regulation. CaM-affinity chromatography showed that CaM binding to KCa3.1 was decreased by PKA-dependent phosphorylation of S334, and this regulation was absent in the S334A mutant. Single-channel analysis showed that PKA decreased the open probability in wild-type but not S334A mutant channels. The same decrease in current for native and wild-type expressed KCa3.1 channels (but not S334A) occurred when PKA was activated through the adenosine A2a receptor. Finally, by decreasing the KCa3.1 current, PKA activation reduced Ca(2+)-release-activated Ca(2+) entry following activation of metabotropic purinergic receptors in microglia.
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