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Liu C, Zhao XM, Wang Q, Du TT, Zhang MX, Wang HZ, Li RP, Liang K, Gao Y, Zhou SY, Xue T, Zhang JG, Han CL, Shi L, Zhang LW, Meng FG. Astrocyte-derived SerpinA3N promotes neuroinflammation and epileptic seizures by activating the NF-κB signaling pathway in mice with temporal lobe epilepsy. J Neuroinflammation 2023; 20:161. [PMID: 37422673 DOI: 10.1186/s12974-023-02840-8] [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: 11/14/2022] [Accepted: 06/22/2023] [Indexed: 07/10/2023] Open
Abstract
Impaired activation and regulation of the extinction of inflammatory cells and molecules in injured neuronal tissues are key factors in the development of epilepsy. SerpinA3N is mainly associated with the acute phase response and inflammatory response. In our current study, transcriptomics analysis, proteomics analysis, and Western blotting showed that the expression level of Serpin clade A member 3N (SerpinA3N) is significantly increased in the hippocampus of mice with kainic acid (KA)-induced temporal lobe epilepsy, and this molecule is mainly expressed in astrocytes. Notably, in vivo studies using gain- and loss-of-function approaches revealed that SerpinA3N in astrocytes promoted the release of proinflammatory factors and aggravated seizures. Mechanistically, RNA sequencing and Western blotting showed that SerpinA3N promoted KA-induced neuroinflammation by activating the NF-κB signaling pathway. In addition, co-immunoprecipitation revealed that SerpinA3N interacts with ryanodine receptor type 2 (RYR2) and promotes RYR2 phosphorylation. Overall, our study reveals a novel SerpinA3N-mediated mechanism in seizure-induced neuroinflammation and provides a new target for developing neuroinflammation-based strategies to reduce seizure-induced brain injury.
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Affiliation(s)
- Chong Liu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China
| | - Xue-Min Zhao
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
| | - Qiao Wang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China
| | - Ting-Ting Du
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
| | - Mo-Xuan Zhang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China
| | - Hui-Zhi Wang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China
| | - Ren-Peng Li
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China
| | - Kun Liang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China
| | - Yuan Gao
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China
| | - Si-Yu Zhou
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China
| | - Tao Xue
- Beijing Tiantan Hospital, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China
| | - Jian-Guo Zhang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China
- Beijing Tiantan Hospital, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China
| | - Chun-Lei Han
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China.
- Beijing Tiantan Hospital, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China.
| | - Lin Shi
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China.
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China.
- Beijing Tiantan Hospital, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China.
| | - Liang-Wen Zhang
- Beijing Tiantan Hospital, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China.
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China.
| | - Fan-Gang Meng
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China.
- Beijing Key Laboratory of Neurostimulation, Beijing, 100070, China.
- Beijing Tiantan Hospital, Capital Medical University, No. 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China.
- Chinese Institute for Brain Research, Beijing, 102206, China.
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Bai D, Sun Y, Li Q, Li H, Liang Y, Xu X, Hao J. Leonurine attenuates OVA-induced asthma via p38 MAPK/NF-κB signaling pathway. Int Immunopharmacol 2023; 114:109483. [PMID: 36463697 DOI: 10.1016/j.intimp.2022.109483] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 10/29/2022] [Accepted: 11/17/2022] [Indexed: 12/02/2022]
Abstract
Leonurine (Leo) is a natural alkaloid extracted from Herba leonuri, which has many biological activities. However, whether leonurine has a protective effect on asthma remains unknown. The purpose of this study was to investigate the protective effect of leonurine on asthma. We evaluated its therapeutic effect and related signal transduction in LPS-induced RAW264.7 cells and OVA-induced asthmatic mice. In addition, we used network pharmacology, molecular docking and molecular dynamics simulation to verify the experimental results. In LPS-induced RAW 264.7 cells, leonurine significantly reduced the production of TNF-α and IL-6, andinhibited the activation of p38 MAPK/NF-κB signaling pathway. In OVA-induced asthmatic mice, leonurine decreased the number of inflammatory cells in the bronchoalveolar lavage fluid (BALF), particularly neutrophils and eosinophils. Leonurine also reduced the contents of IL-4, IL-5, IL-13 in the BALF and OVA-IgE in the serum. Leonurine remarkly improved OVA-induced inflammatory cell infiltration and significantly inhibited mucus overproduction. In addition, leonurine inhibited the activation of p38 MAPK/NF-κB signaling pathway in the lung tissues of asthmatic mice. Network pharmacology suggested that p38 MAPKα was a potential target of leonurine in the treatment of asthma. Molecular docking and molecular dynamics simulations indicated that leonurine could stably bind to p38 MAPKα protein. In summary, leonurine attenuated asthma by regulating p38 MAPK/NF-κB signaling pathway.
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Affiliation(s)
- Donghui Bai
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Yujie Sun
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Qiong Li
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Haihua Li
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Yuerun Liang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Ximing Xu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Jiejie Hao
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China.
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Aubert A, Lane M, Jung K, Granville DJ. Granzyme B as a therapeutic target: an update in 2022. Expert Opin Ther Targets 2022; 26:979-993. [PMID: 36542784 DOI: 10.1080/14728222.2022.2161890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Granzyme B is a serine protease extensively studied for its implication in cytotoxic lymphocyte-mediated apoptosis. In recent years, the paradigm that the role of granzyme B is restricted to immune cell-mediated killing has been challenged as extracellular roles for the protease have emerged. While mostly absent from healthy tissues, granzyme B levels are elevated in several autoimmune and/or chronic inflammatory conditions. In the skin, its accumulation significantly impairs proper wound healing. AREAS COVERED After an overview of the current knowledge on granzyme B, a description of newly identified functions will be presented, focussing on granzyme B ability to promote cell-cell and dermal-epidermal junction disruption, extracellular matrix degradation, vascular permeabilization, and epithelial barrier dysfunction. Progress in granzyme B inhibition, as well as the use of granzyme B inhibitors for the treatment of tissue damage, will be discussed. EXPERT OPINION The absence of endogenous extracellular inhibitors renders extracellular granzyme B accumulation deleterious for the proper healing of chronic wounds due to sustained proteolytic activity. Consequently, specific granzyme B inhibitors have been developed as new therapeutic approaches. Beyond applications in wound healing, other autoimmune and/or chronic inflammatory conditions related to exacerbated granzyme B activity may also benefit from the development of these inhibitors.
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Affiliation(s)
- Alexandre Aubert
- International Collaboration on Repair Discoveries (ICORD) Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada.,British Columbia Professional Firefighters' Burn and Wound Healing Group, Vancouver, BC, Canada
| | - Michael Lane
- International Collaboration on Repair Discoveries (ICORD) Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada.,British Columbia Professional Firefighters' Burn and Wound Healing Group, Vancouver, BC, Canada
| | - Karen Jung
- International Collaboration on Repair Discoveries (ICORD) Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada.,British Columbia Professional Firefighters' Burn and Wound Healing Group, Vancouver, BC, Canada
| | - David J Granville
- International Collaboration on Repair Discoveries (ICORD) Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada.,British Columbia Professional Firefighters' Burn and Wound Healing Group, Vancouver, BC, Canada
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Structural and PK-guided identification of indole-based non-acidic autotaxin (ATX) inhibitors exhibiting high in vivo anti-fibrosis efficacy in rodent model. Eur J Med Chem 2021; 227:113951. [PMID: 34742015 DOI: 10.1016/j.ejmech.2021.113951] [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: 09/24/2021] [Revised: 10/13/2021] [Accepted: 10/23/2021] [Indexed: 11/23/2022]
Abstract
In recent decades, pharmacological targeting of the autotaxin (ATX)/lysophosphatidic acid (LPA) axis accounted for excellent disease management benefits. Herein, to extend the scope of structure-activity relationships (SARs), fifteen indole-based carbamate derivatives (1-15) were prepared to evaluate the ATX inhibitory potency. Among them, compound 4 bearing morpholine moiety was identified as the optimal ATX inhibitor (0.41 nM), superior to the positive control GLPG1690 (2.90 nM). To resolve the intractable issue of poor pharmacokinetic (PK) property, urea moiety was introduced as a surrogate of carbamate which furnished compounds 16-30. The dedicated modification identified the diethanolamine entity 30 with satisfactory water solubility and PK profiles with a minimum sacrifice of ATX inhibition (2.17 nM). The most promising candidate 30 was evaluated for anti-fibrosis effect in a bleomycin challenged mice lung fibrosis model. Upon treatment with 30, the in vivo ATX activity in both lung homogenate and broncheoalveolar fluid (BALF) sample was significantly down-regulated. Furthermore, the gene expression of pro-fibrotic cytokines transforming growth factor-β (TGF-β), interleukin- 6 (IL-6) and tumor necrosis factor-α (TNF-α) in lung tissue was reduced to normal level. Collectively, the promising biological effects may advocate potential application of 30 in fibrosis relevant diseases.
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Gezer A, Karadag-Sari E. The role of amifostine in preventing radiotherapy induced testicular tissue damage in rats. Biotech Histochem 2021; 97:215-221. [PMID: 34058938 DOI: 10.1080/10520295.2021.1933178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
The germinal epithelium of the adult testis is susceptible to radiation induced damage. Amifostine is a drug used to prevent the side effects of radiotherapy (RT) and chemotherapy. We investigated the protective role of amifostine against RT induced damage to rat testis using the TUNEL assay. We used adult male rats divided equally into four groups: untreated control group; amifostine group, 200 mg/kg amifostine/day for 3 days; RT-saline group, 2 Gy/day local irradiation of testes for 3 days; RT-amifostine group, 2 Gy/day local irradiation of testes for 3 days plus 200 mg/kg amifostine 30 min before each irradiation. Four weeks after treatment, rats were sacrificed for histological examination and apoptosis was assessed using the TUNEL method. The TUNEL staining density was obtained by evaluating separate seminiferous tubules selected randomly from each section using the stereological fractionator method. Apoptosis in the seminiferous tubules in the control group and amifostine groups were evaluated as spontaneous. Frequent apoptosis was observed in the RT-saline group; a statistically significant difference was observed between the RT treated and untreated groups. Administration of amifostine 30 min before RT protected the testicular germ cells against apoptosis.
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Affiliation(s)
- Arzu Gezer
- Vocational School of Health Services, Ataturk University, Erzurum, Turkey
| | - Ebru Karadag-Sari
- Histology Department, Faculty of Veterinary Medicine, Kafkas University, Kars, Turkey
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