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Kwon KM, Kim EH, Sim KH, Lee YJ, Kang EJ, Han KH, Jin JS, Kim DK, Ahn JH, Hwang IH. Phenylacetic acid, an anti-vaginitis metabolite produced by the vaginal symbiotic bacterium Chryseobacterium gleum. Sci Rep 2024; 14:12226. [PMID: 38806600 PMCID: PMC11133378 DOI: 10.1038/s41598-024-62947-7] [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: 07/25/2023] [Accepted: 05/22/2024] [Indexed: 05/30/2024] Open
Abstract
The human microbiome contains genetic information that regulates metabolic processes in response to host health and disease. While acidic vaginal pH is maintained in normal conditions, the pH level increases in infectious vaginitis. We propose that this change in the vaginal environment triggers the biosynthesis of anti-vaginitis metabolites. Gene expression levels of Chryseobacterium gleum, a vaginal symbiotic bacterium, were found to be affected by pH changes. The distinctive difference in the metabolic profiles between two C. gleum cultures incubated under acidic and neutral pH conditions was suggested to be an anti-vaginitis molecule, which was identified as phenylacetic acid (PAA) by spectroscopic data analysis. The antimicrobial activity of PAA was evaluated in vitro, showing greater toxicity toward Gardnerella vaginalis and Candida albicans, two major vaginal pathogens, relative to commensal Lactobacillus spp. The activation of myeloperoxidase, prostaglandin E2, and nuclear factor-κB, and the expression of cyclooxygenase-2 were reduced by an intravaginal administration of PAA in the vaginitis mouse model. In addition, PAA displayed the downregulation of mast cell activation. Therefore, PAA was suggested to be a messenger molecule that mediates interactions between the human microbiome and vaginal health.
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Affiliation(s)
- Kang Mu Kwon
- Department of Pharmacy, Woosuk University, Wanju, Jeonbuk, 55338, Republic of Korea
| | - Eun-Hye Kim
- Department of Korean Pharmacy, Woosuk University, Wanju, Jeonbuk, 55338, Republic of Korea
| | - Kyeong Hwa Sim
- Department of Pharmacology, School of Medicine, Daegu Catholic University, 33 Duryugongwon-ro 17-gil, Nam-gu, Daegu, 42472, Republic of Korea
| | - Youn Ju Lee
- Department of Pharmacology, School of Medicine, Daegu Catholic University, 33 Duryugongwon-ro 17-gil, Nam-gu, Daegu, 42472, Republic of Korea
| | - Eun-Ji Kang
- Department of Food and Biotechnology, Woosuk University, Wanju, Jeonbuk, 55338, Republic of Korea
| | - Kap-Hoon Han
- Department of Pharmaceutical Engineering, Woosuk University, Wanju, Jeonbuk, 55338, Republic of Korea
| | - Jong-Sik Jin
- Department of Oriental Medicine Resources, Jeonbuk National University, Iksan, Jeonbuk, 54596, Republic of Korea
| | - Dae Keun Kim
- Department of Pharmacy, Woosuk University, Wanju, Jeonbuk, 55338, Republic of Korea
- Research Institute of Pharmaceutical Sciences, Woosuk University, Wanju, 55338, Republic of Korea
| | - Ji-Hye Ahn
- Department of Korean Pharmacy, Woosuk University, Wanju, Jeonbuk, 55338, Republic of Korea.
| | - In Hyun Hwang
- Department of Pharmacy, Woosuk University, Wanju, Jeonbuk, 55338, Republic of Korea.
- Research Institute of Pharmaceutical Sciences, Woosuk University, Wanju, 55338, Republic of Korea.
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Pavlyuchenkova AN, Smirnov MS, Chernyak BV, Chelombitko MA. The Role Played by Autophagy in FcεRI-Dependent Activation of Mast Cells. Cells 2024; 13:690. [PMID: 38667305 PMCID: PMC11049365 DOI: 10.3390/cells13080690] [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: 02/29/2024] [Revised: 04/10/2024] [Accepted: 04/14/2024] [Indexed: 04/28/2024] Open
Abstract
The significant role of mast cells in the development of allergic and inflammatory diseases is well-established. Among the various mechanisms of mast cell activation, the interaction of antigens/allergens with IgE and the subsequent binding of this complex to the high-affinity IgE receptor FcεRI stand out as the most studied and fundamental pathways. This activation process leads to the rapid exocytosis of granules containing preformed mediators, followed by the production of newly synthesized mediators, including a diverse array of cytokines, chemokines, arachidonic acid metabolites, and more. While conventional approaches to allergy control primarily focus on allergen avoidance and the use of antihistamines (despite their associated side effects), there is increasing interest in exploring novel methods to modulate mast cell activity in modern medicine. Recent evidence suggests a role for autophagy in mast cell activation, offering potential avenues for utilizing low-molecular-weight autophagy regulators in the treatment of allergic diseases. More specifically, mitochondria, which play an important role in the regulation of autophagy as well as mast cell activation, emerge as promising targets for drug development. This review examines the existing literature regarding the involvement of the molecular machinery associated with autophagy in FcεRI-dependent mast cell activation.
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Affiliation(s)
- Anastasia N. Pavlyuchenkova
- Belozersky Institute of Physicochemical Biology, Moscow State University, Moscow 119992, Russia; (A.N.P.)
- Faculty of Bioengineering and Bioinformatics, Moscow State University, Moscow 119992, Russia
| | - Maxim S. Smirnov
- Belozersky Institute of Physicochemical Biology, Moscow State University, Moscow 119992, Russia; (A.N.P.)
- Faculty of Bioengineering and Bioinformatics, Moscow State University, Moscow 119992, Russia
| | - Boris V. Chernyak
- Belozersky Institute of Physicochemical Biology, Moscow State University, Moscow 119992, Russia; (A.N.P.)
| | - Maria A. Chelombitko
- Belozersky Institute of Physicochemical Biology, Moscow State University, Moscow 119992, Russia; (A.N.P.)
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3
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Wang J, Wu Y, Li X, Wang X, Yang S. Bergapten inhibits airway inflammation and MRGPRX2-mediated mast cells activation by targeting NR4A1. Int Immunopharmacol 2024; 130:111798. [PMID: 38442583 DOI: 10.1016/j.intimp.2024.111798] [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: 01/19/2024] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 03/07/2024]
Abstract
Asthma is a serious global health problem affecting 300 million persons around the world. Mast cells (MCs) play a major role in airway hyperresponsiveness (AHR) and inflammation in asthma, their exact effector mechanisms remain unclear. Here, we aim to investigate the inhibitory effect of Bergapten (BER) on MRGPRX2-mediated MCs activation through asthma model. Mouse model of asthma was established to examine the anti-asthmatic effects of BER. Calcium (Ca2+) influx, β-hexosaminidase and histamine release were used to assess MCs degranulation in vitro. RNA-Seq technique was conducted to study the gene expression profile. RT-PCR and Western Blotting were performed to examine targeting molecules expression. BER inhibited AHR, inflammation, mucous secretion, collagen deposition and lung MCs activation in asthma model. BER dramatically reduced levels of IL4, IL-5, and IL-13 in bronchoalveolar lavage fluid (BALF), as well as inflammatory cells. BER also reduced serum IgE levels. Pretreatment MCs with BER inhibited substance P (SP)-induced Ca2+ influx, degranulation and cytokines release from MCs. BER also reduced the phosphorylation levels of PKC, PLC, IP3R, AKT and ERK, which were induced by SP. Furthermore, RNA-seq analysis showed that SP up-regulated 68 genes in MCs, while were reversed by BER. Among these 68 genes, SP up-regulated NR4A1 expression, and this effect was inhibited by BER. Meanwhile, knockdown of NR4A1 significantly attenuated SP-induced MCs degranulation. In conclusion, NR4A1 plays a major role in MRGPRX2-mediated MCs activation, BER inhibited AHR and inflammation in asthmatic model by inhibiting MCs activation through MRGPRX2-NR4A1 pathway.
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Affiliation(s)
- Jue Wang
- Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Yuanyuan Wu
- Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Xiao Li
- Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Xinghui Wang
- Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Shuanying Yang
- Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China.
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4
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Xiao T, Yu X, Yang L, Duan X. Palmatine treats urticaria by reducing inflammation and increasing autophagy. Front Immunol 2023; 14:1268467. [PMID: 38035098 PMCID: PMC10682667 DOI: 10.3389/fimmu.2023.1268467] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/31/2023] [Indexed: 12/02/2023] Open
Abstract
Introduction Chronic spontaneous urticaria (CSU) is mainly manifested as wheals and erythema on the skin accompanied by itching, which will cause emotional anxiety and seriously affect the quality of life in patients. Palmatine (PAL) is a main chemical component of Yajieshaba, which has been found to effectively alleviate the symptoms of food allergy. However, its role and mechanism in CSU remain unclear. The present study aimed to investigate the protective effect of PAL on CSU rats. Methods We replicated the CSU rat model by intraperitoneal injection of ovalbumin (OVA) in rats on days 0, 2, 4, and 14, with a double dose given on the last challenge. PAL, loratadine and saline were given by gavage from day 5 to day 14. We observed the skin pathologic changes, mast cell degranulation, immune factor levels, inflammatory response and autophagy-related protein expression in CSU rats. Results We found PAL treatment to be effective in alleviating CSU-like skin lesions and reducing itching and mast cell degranulation in rats. Compared with the OVA group, the levels of immune and inflammatory factors were significantly reduced, neutrophil recruitment was alleviated, suggesting a reduced inflammatory response. The autophagy results showed that PAL further increased the expression of LC3, Beclin-1 and p-LKB1, p-AMPK, Atg5, Atg12 and Atg5-Atg12, while P62 and p-p70S6K1 expression decreased. They collectively suggested that autophagic flux was activated after PAL treatment. However, there was an increase in the expression of LC3I, probably due to the fact that PAL induced its accumulation in order to provide substrate for the generation of more LC3II. Discussion Overall, PAL had a protective effect on CSU in normal rats, activated the expression of autophagy and improved the inflammatory response.
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Affiliation(s)
| | | | | | - Xiaohua Duan
- Yunnan Key Laboratory of Dai and Yi Medicines, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
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Ishitsuka K, Yoshizawa Y, Nishikii H, Kusakabe M, Ito Y, Inadome Y, Sakamoto T, Kato T, Kurita N, Yokoyama Y, Obara N, Hasegawa Y, Nannya Y, Ogawa S, Sakata-Yanagimoto M, Chiba S. Novel translocation of POGZ/ STK11 in de novo mast cell leukemia with KIT D816H mutation. Leuk Lymphoma 2022; 63:3475-3479. [PMID: 36126964 DOI: 10.1080/10428194.2022.2123235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Kantaro Ishitsuka
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan
| | - Yuki Yoshizawa
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan
| | - Hidekazu Nishikii
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Manabu Kusakabe
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yufu Ito
- Department of Hematology, Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - Yukinori Inadome
- Department of Pathology, National Hospital Organization Mito Medical Center, Ibaraki, Japan
| | - Tatsuhiro Sakamoto
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Takayasu Kato
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Naoki Kurita
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yasuhisa Yokoyama
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Naoshi Obara
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yuichi Hasegawa
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yasuhito Nannya
- Department of Hematology/Oncology, Institute of Medical Science, University of Tokyo, Tokyo, Japan.,Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
| | - Seishi Ogawa
- Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
| | - Mamiko Sakata-Yanagimoto
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Shigeru Chiba
- Department of Hematology, University of Tsukuba Hospital, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
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6
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Abstract
Mast cells originate from the CD34+/CD117+ hematopoietic progenitors in the bone marrow, migrate into circulation, and ultimately mature and reside in peripheral tissues. Microbiota/metabolites and certain immune cells (e.g., Treg cells) play a key role in maintaining immune tolerance. Cross-linking of allergen-specific IgE on mast cells activates the high-affinity membrane-bound receptor FcεRI, thereby initiating an intracellular signal cascade, leading to degranulation and release of pro-inflammatory mediators. The intracellular signal transduction is intricately regulated by various kinases, transcription factors, and cytokines. Importantly, multiple signal components in the FcεRI-mast cell–mediated allergic cascade can be targeted for therapeutic purposes. Pharmacological interventions that include therapeutic antibodies against IgE, FcεRI, and cytokines as well as inhibitors/activators of several key intracellular signaling molecues have been used to inhibit allergic reactions. Other factors that are not part of the signal pathway but can enhance an individual’s susceptibility to allergen stimulation are referred to as cofactors. Herein, we provide a mechanistic overview of the FcεRI-mast cell–mediated allergic signaling. This will broaden our scope and visions on specific preventive and therapeutic strategies for the clinical management of mast cell–associated hypersensitivity reactions.
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7
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Yang YS, Cao MD, Wang A, Liu QM, Zhu DX, Zou Y, Ma LL, Luo M, Shao Y, Xu DD, Wei JF, Sun JL. Nano-silica particles synergistically IgE-mediated mast cell activation exacerbating allergic inflammation in mice. Front Immunol 2022; 13:911300. [PMID: 35936002 PMCID: PMC9355306 DOI: 10.3389/fimmu.2022.911300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 06/27/2022] [Indexed: 12/05/2022] Open
Abstract
Background Allergic respiratory diseases have increased dramatically due to air pollution over the past few decades. However, studies are limited on the effects of inorganic components and particulate matter with different particle sizes in smog on allergic diseases, and the possible molecular mechanism of inducing allergies has not been thoroughly studied. Methods Four common mineral elements with different particle sizes in smog particles were selected, including Al2O3, TiO2, Fe2O3, and SiO2. We studied the relationship and molecular mechanism of smog particle composition, particle size, and allergic reactions using mast cells, immunoglobulin E (IgE)-mediated passive cutaneous anaphylaxis (PCA) model, and an ovalbumin (OVA)-induced asthmatic mouse model in vitro and in vivo, combined with transmission electron microscopy, scanning transmission X-ray microscopy analysis, and transcriptome sequencing. Results Only 20 nm SiO2 particles significantly increased β-hexosaminidase release, based on dinitrophenol (DNP)-human serum albumin (HSA) stimulation, from IgE-sensitized mast cells, while other particles did not. Meanwhile, the PCA model showed that Evan’s blue extravasation in mice was increased after treatment with nano-SiO2 particles. Nano-SiO2 particles exposure in the asthmatic mouse model caused an enhancement of allergic airway inflammation as manifested by OVA-specific serum IgE, airway hyperresponsiveness, lung inflammation injury, mucous cell metaplasia, cytokine expression, mast cell activation, and histamine secretion, which were significantly increased. Nano-SiO2 particles exposure did not affect the expression of FcϵRI or the ability of mast cells to bind IgE but synergistically activated mast cells by enhancing the mitogen-activated protein kinase (MAPK) signaling pathway, especially the phosphorylation levels of the extracellular signal-regulated kinase (ERK)1/2. The ERK inhibitors showed a significant inhibitory effect in reducing β-hexosaminidase release. Conclusion Our results indicated that nano-SiO2 particles stimulation might synergistically activate IgE-sensitized mast cells by enhancing the MAPK signaling pathway and that nano-SiO2 particles exposure could exacerbate allergic inflammation. Our experimental results provide useful information for preventing and treating allergic diseases.
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Affiliation(s)
- Yong-Shi Yang
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Meng-Da Cao
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - An Wang
- Beijing Engineering Research Center of Radiographic Techniques and Equipment, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
| | - Qing-Mei Liu
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Dan-Xuan Zhu
- Women and Children Central Laboratory, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ying Zou
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
| | - Ling-Ling Ma
- Beijing Engineering Research Center of Radiographic Techniques and Equipment, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
| | - Min Luo
- Beijing Engineering Research Center of Radiographic Techniques and Equipment, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
| | - Yang Shao
- Beijing Engineering Research Center of Radiographic Techniques and Equipment, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
| | - Dian-Dou Xu
- Beijing Engineering Research Center of Radiographic Techniques and Equipment, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
- *Correspondence: Jin-Lyu Sun, ; Ji-Fu Wei, ; Dian-Dou Xu,
| | - Ji-Fu Wei
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Department of Pharmacy, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Jin-Lyu Sun, ; Ji-Fu Wei, ; Dian-Dou Xu,
| | - Jin-Lyu Sun
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- *Correspondence: Jin-Lyu Sun, ; Ji-Fu Wei, ; Dian-Dou Xu,
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Plant-Derived Molecule 4-Methylumbelliferone Suppresses FcεRI-Mediated Mast Cell Activation and Allergic Inflammation. Molecules 2022; 27:molecules27051577. [PMID: 35268679 PMCID: PMC8912031 DOI: 10.3390/molecules27051577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/24/2022] [Accepted: 02/25/2022] [Indexed: 12/07/2022] Open
Abstract
Mast cells (MCs) are an important treatment target for high-affinity IgE Fc receptor (FcεRI)-mediated allergic diseases. The plant-derived molecule 4-methylumbelliferone (4-MU) has beneficial effects in animal models of inflammation and autoimmunity diseases. The aim of this study was to examine 4-MU effects on MC activation and probe the underlying molecular mechanism(s). We sensitized rat basophilic leukemia cells (RBLs) and mouse bone marrow-derived mast cells (BMMCs) with anti-dinitrophenol (DNP) immunoglobulin (Ig)E antibodies, stimulated them with exposure to DNP-human serum albumin (HSA), and then treated stimulated cells with 4-MU. Signaling-protein expression was determined by immunoblotting. In vivo allergic responses were examined in IgE-mediated passive cutaneous anaphylaxis (PCA) and ovalbumin (OVA)-induced active systemic anaphylaxis (ASA) mouse models. 4-MU inhibited β-hexosaminidase activity and histamine release dose-dependently in FcεRI-activated RBLs and BMMCs. Additionally, 4-MU reduced cytomorphological elongation and F-actin reorganization while down-regulating IgE/Ag-induced phosphorylation of SYK, NF-κB p65, ERK1/2, p38, and JNK. Moreover, 4-MU attenuated the PCA allergic reaction (i.e., less ear thickening and dye extravasation). Similarly, we found that 4-MU decreased body temperature, serum histamine, and IL4 secretion in OVA-challenged ASA model mice. In conclusion, 4-MU had a suppressing effect on MC activation both in vitro and in vivo and thus may represent a new strategy for treating IgE-mediated allergic conditions.
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Li R, Chen S, Gu X, An S, Wang Z. Role of the nuclear receptor subfamily 4a in mast cells in the development of irritable bowel syndrome. Comput Struct Biotechnol J 2022; 20:1198-1207. [PMID: 35317226 PMCID: PMC8907967 DOI: 10.1016/j.csbj.2022.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 02/17/2022] [Accepted: 02/19/2022] [Indexed: 11/15/2022] Open
Abstract
The activation of mast cells (MCs) and mediator release are closely related to the pathophysiology of irritable bowel syndrome (IBS). However, the exact underlying mechanisms are still not completely understood. The nuclear receptor subfamily 4a (Nr4a) is a family of orphan nuclear receptors implicated in regulating MC activation, degranulation, cytokine/chemokine synthesis and release. Acute and chronic stress trigger hypothalamic–pituitaryadrenal axis (HPA) activation to induce the release of corticotropin-releasing hormone (CRH), resulting in MC activation and induction of the Nr4a family. Our newest data showed that Nr4a members were specially over-expressed in colonic MCs of the chronic water-avoidance stress (WAS)-induced visceral hyperalgesia mice, suggesting that Nr4a members might be involved in the pathophysiology of visceral hypersensitivity. In this review, we highlight the present knowledge on roles of Nr4a members in the activation of MCs and the pathophysiology of IBS, and discuss signaling pathways that modulate the activation of Nr4a family members. We propose that a better understanding of Nr4a members and their modulators may facilitate the development of more selective and effective therapies to treat IBS patients.
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Affiliation(s)
| | | | | | - Shuhong An
- Corresponding authors at: Department of Human Anatomy, Shandong First Medical University & Shandong Academy of Medical Sciences, 2 Ying Sheng Dong Lu, Taian 271000, China.
| | - Zhaojin Wang
- Corresponding authors at: Department of Human Anatomy, Shandong First Medical University & Shandong Academy of Medical Sciences, 2 Ying Sheng Dong Lu, Taian 271000, China.
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10
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Park SJ, Sim KH, Shrestha P, Yang JH, Lee YJ. Perfluorooctane sulfonate and bisphenol A induce a similar level of mast cell activation via a common signaling pathway, Fyn-Lyn-Syk activation. Food Chem Toxicol 2021; 156:112478. [PMID: 34363875 DOI: 10.1016/j.fct.2021.112478] [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: 04/21/2021] [Revised: 07/31/2021] [Accepted: 08/03/2021] [Indexed: 02/04/2023]
Abstract
Perfluoroalkyl compounds (PFCs) as food contaminants are widely distributed persistent organic pollutants (POPs) and have been suggested to induce immune dysfunction. However, their effects on immune function are not conclusive. Mast cells play a central role in allergic and non-allergic inflammatory responses. Therefore, we have examined the effects of PFCs (PFHxS, PFOA, PFOS) on mast cell-mediated inflammatory responses using in vitro mouse bone marrow-derived mast cells (BMMCs) and human mast cells (HMC-1) and in vivo mice model. The effects of PFCs were compared with those of bisphenol A (BPA), a well-studied environmental pollutant. Among PFCs tested, PFOS had the highest effects. Both PFOS and BPA increased degranulation and production of inflammatory eicosanoids in mast cells at a similar level, which subsequently led to increased skin edema and serum LTC4 and PGD2 in mice. Both PFOS and BPA increased not only downstream signaling (PLCγ1, AKT, ERK), but also upstream signaling (Fyn, Lyn, Syk/LAT) in mast cells. Taken together, PFOS and BPA induce mast cell-mediated inflammatory responses via a common signaling pathways. Our results may help establish the scientific basis for understanding the etiology of mast cell-mediated inflammatory responses and improve the immune dysfunction risk assessment for emerging POPs such as PFCs.
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Affiliation(s)
- Sung-Joon Park
- Department of Pharmacology/Toxicology, School of Medicine, Catholic University of Daegu, Daegu, Republic of Korea
| | - Kyeong Hwa Sim
- Department of Pharmacology/Toxicology, School of Medicine, Catholic University of Daegu, Daegu, Republic of Korea
| | - Prafulla Shrestha
- Department of Pharmacology/Toxicology, School of Medicine, Catholic University of Daegu, Daegu, Republic of Korea
| | - Jae-Ho Yang
- Department of Pharmacology/Toxicology, School of Medicine, Catholic University of Daegu, Daegu, Republic of Korea
| | - Youn Ju Lee
- Department of Pharmacology/Toxicology, School of Medicine, Catholic University of Daegu, Daegu, Republic of Korea.
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Wang HN, Ji K, Zhang LN, Xie CC, Li WY, Zhao ZF, Chen JJ. Inhibition of c-Fos expression attenuates IgE-mediated mast cell activation and allergic inflammation by counteracting an inhibitory AP1/Egr1/IL-4 axis. J Transl Med 2021; 19:261. [PMID: 34130714 PMCID: PMC8207675 DOI: 10.1186/s12967-021-02932-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 06/08/2021] [Indexed: 02/07/2023] Open
Abstract
Background Activator protein-1 (AP1), a c-Fos–JUN transcription factor complex, mediates many cytobiological processes. c-Fos has been implicated in immunoglobulin (Ig)E activation of mast cells (MCs) via high-affinity IgE Fc receptor (FcεRI) binding. This study examined c-Fos involvement in MC activation and tested the effects of the c-Fos/AP1 inhibitor T-5224 on MCs activation and allergic responses. Methods In vitro studies were conducted with two MC model systems: rat basophilic leukemia cells (RBLs) and mouse bone marrow derived mast cells (BMMCs). MC degranulation and effector functions were examined with β-hexosaminidase release and cytokine secretion assays. c-Fos/AP1 was inhibited with T-5224. c-Fos activity was suppressed with short hairpin RNA targeting c-Fos (shFos). In vivo immune responses were evaluated in passive cutaneous anaphylaxis (PCA) and ovalbumin-induced active systemic anaphylaxis (ASA) models, as well as in an oxazolone (OXA)-induced model of atopic dermatitis, a common allergic disease. Results c-Fos expression was elevated transcriptionally and translationally in IgE-stimulated MCs. c-Fos binding of the Egr1 (early growth response 1) promoter upregulated Egr1 transcription, leading to production of interleukin (IL)4. T-5224 reduced FcεRI-mediated MC degranulation (evidenced by β-hexosaminidase activity and histamine levels) and diminished EGR1 and IL4 expression. T-5224 attenuated IgE-mediated allergic responses in PCA and ASA models, and it suppressed MC-mediated atopic dermatitis in mice. Conclusion IgE binding can activate MCs via a c-Fos/Egr1/IL-4 axis. T-5224 suppresses MC activation in vitro and in vivo and thus represents a promising potential strategy for targeting MC activation to treat allergic diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-02932-0.
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Affiliation(s)
- Hui-Na Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Laboratory Department of South China Hospital, Health Science Center, Shenzhen University, No. 1066 Xueyuan Road, Nanshan District, Shenzhen, 518060, People's Republic of China
| | - Kunmei Ji
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Laboratory Department of South China Hospital, Health Science Center, Shenzhen University, No. 1066 Xueyuan Road, Nanshan District, Shenzhen, 518060, People's Republic of China
| | - Li-Na Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Laboratory Department of South China Hospital, Health Science Center, Shenzhen University, No. 1066 Xueyuan Road, Nanshan District, Shenzhen, 518060, People's Republic of China
| | - Chu-Chu Xie
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Laboratory Department of South China Hospital, Health Science Center, Shenzhen University, No. 1066 Xueyuan Road, Nanshan District, Shenzhen, 518060, People's Republic of China
| | - Wei-Yong Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Laboratory Department of South China Hospital, Health Science Center, Shenzhen University, No. 1066 Xueyuan Road, Nanshan District, Shenzhen, 518060, People's Republic of China
| | - Zhen-Fu Zhao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Laboratory Department of South China Hospital, Health Science Center, Shenzhen University, No. 1066 Xueyuan Road, Nanshan District, Shenzhen, 518060, People's Republic of China
| | - Jia-Jie Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Laboratory Department of South China Hospital, Health Science Center, Shenzhen University, No. 1066 Xueyuan Road, Nanshan District, Shenzhen, 518060, People's Republic of China.
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Wang X, Li G, Guo C, Zhang J, Kong J, He J, Li F, Liu Y, Yang Y, Lu Z, Liu J. Ethyl 2-[2,3,4-Trimethoxy-6-(1-Octanoyl)Phenyl] Acetate (TMPA) Ameliorates Lipid Accumulation by Disturbing the Combination of LKB1 with Nur77 and Activating the AMPK Pathway in HepG2 Cells and Mice Primary Hepatocytes. Diabetes Metab Syndr Obes 2021; 14:4165-4177. [PMID: 34629883 PMCID: PMC8495146 DOI: 10.2147/dmso.s321246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/30/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The AMP-activated protein kinase alpha (AMPKα) pathway has widely been considered a key factor in energy metabolism. Ethyl 2-[2,3,4-trimethoxy-6-(1-octanoyl)phenyl] acetate (TMPA) is a novel AMPK agonist, which influences the stability of Nuclear Receptor Subfamily 4, Group A, Member 1 (Nur77)-serine-threonine kinase 11 (LKB1) in the nucleus. A recent study has determined that TMPA can ameliorate the reduction of insulin resistance in type II db/db mice. However, the role of TMPA in hepatocyte lipid metabolism has not been elucidated. OBJECTIVE To investigate whether TMPA could ameliorate liver lipid accumulation under the stimulation of free fatty acids (FFAs) in vitro. METHODS We evaluated differences of Nur77 and AMPK pathway in mice fed a high-fat diet and those fed a normal diet. In vitro, TMPA was added to HepG2 cells and primary hepatocytes before FFAs stimulation. Oil red O staining, Nile red staining were used to evaluate lipid deposition. Western blot and immunofluorescence were used to quantify related proteins. RESULTS Nur77, AMPKα, LKB1, 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR), acetyl-CoA carboxylase phosphorylation (p-ACC), and carnitine palmitoyltransferase 1 (CPT1A) showed significant differences in vivo. Under the intervention of TMPA, HepG2 cells and primary hepatocytes showed considerable amelioration of lipid deposition and improved the expression of phosphorylated (p)-AMPKα (p-AMPKα), p-LKB1, p-ACC, and CPT1A. Furthermore, Western blotting and immunofluorescence studies indicated that LKB1 dramatically increased expression in the cytoplasm but decreased in the nucleus. Further, AMPKα phosphorylation (p-AMPKα) also showed a higher expression in cytoplasm instead of the nucleus. CONCLUSION TMPA ameliorated lipid accumulation by influencing the stability of Nur77-LKB1 in vitro.
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Affiliation(s)
- Xiaoyu Wang
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
| | - Guangbing Li
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People’s Republic of China
| | - Changfa Guo
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong University, Cheeloo College of Medicine, Jinan, Shandong, People’s Republic of China
| | - Jiayao Zhang
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
| | - Junjie Kong
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People’s Republic of China
| | - Jingyi He
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People’s Republic of China
| | - Feiyu Li
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
| | - Yong Liu
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
| | - Yang Yang
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
| | - Ziwen Lu
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
| | - Jun Liu
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
- Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People’s Republic of China
- Correspondence: Jun Liu Department of Hepatobiliary Surgery and Center of Organ Transplantation, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, People’s Republic of China Email
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Wang C, Li L, Jiang J, Li L, Li J, Xu C, Jin S, Zhu L, Yan G. Pterostilbene Inhibits FcεRI Signaling through Activation of the LKB1/AMPK Pathway in Allergic Response. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:3456-3465. [PMID: 32096633 DOI: 10.1021/acs.jafc.9b07126] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, the role and mechanism of pterostilbene (Pts) in mast cell degranulation in vitro and in vivo were investigated. The results showed that Pts inhibited mast cell-mediated local passive allergic reactions in mice. In addition, treatment with Pts reduced both histamine release and calcium influx in rat peritoneal mast cells and RBL-2H3 cells and reduced IgE-mediated mast cell activation. Furthermore, the mechanism underlying Pts inhibition of mast cell signaling was probed via studying the effects of Pts on liver kinase B1 (LKB1), including the use of the LKB1 activator metformin and siRNA knockdown of LKB1. The data showed that Pts reduced the release of inflammatory mediators such as tumor necrosis factor-α, interleukin-6, leukotriene C4, and prostaglandin D2 in mast cells by activating the LKB1/adenosine monophosphate (AMP)-activated protein kinase (AMPK) signaling pathway. Furthermore, Pts inhibited phosphorylation of FcεRI and FcεRI-mediated degranulation in RBL-2H3 cells. These effects were attenuated after LKB1 knockdown. Taken together, Pts could inhibit FcεRI signaling through activation of the LKB1/AMPK signaling pathway in IgE-mediated mast cell activation. Thus, Pts might be an effective therapeutic agent for mast cell-mediated allergic diseases.
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Affiliation(s)
- Chongyang Wang
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Liangchang Li
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Jingzhi Jiang
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Li Li
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Junfeng Li
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Chang Xu
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Shan Jin
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
- Department of Dermatology, Yanbian University Hospital, Yanji 133002, P. R. China
| | - Lianhua Zhu
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
- Department of Dermatology, Yanbian University Hospital, Yanji 133002, P. R. China
| | - Guanghai Yan
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
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FcεRI-HDAC3-MCP1 Signaling Axis Promotes Passive Anaphylaxis Mediated by Cellular Interactions. Int J Mol Sci 2019; 20:ijms20194964. [PMID: 31597362 PMCID: PMC6801807 DOI: 10.3390/ijms20194964] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 10/04/2019] [Accepted: 10/05/2019] [Indexed: 12/20/2022] Open
Abstract
Anaphylaxis is an acute and life-threatening systemic reaction. Food, drug, aero-allergen and insect sting are known to induce anaphylaxis. Mast cells and basophils are known to mediate Immunoglobulin E (IgE)-dependent anaphylaxis, while macrophages, neutrophils and basophils mediate non IgE-dependent anaphylaxis. Histone deacetylases (HDACs) play various roles in biological processes by deacetylating histones and non-histones proteins. HDAC inhibitors can increase the acetylation of target proteins and affect various inflammatory diseases such as cancers and allergic diseases. HDAC3, a class I HDAC, is known to act as epigenetic and transcriptional regulators. It has been shown that HDAC3 can interact with the high-affinity Immunoglobulin E receptor (FcεRI), to mediate passive anaphylaxis and cellular interactions during passive anaphylaxis. Effects of HDAC3 on anaphylaxis, cellular interactions involving mast cells and macrophages during anaphylaxis, and any tumorigenic potential of cancer cells enhanced by mast cells will be discussed in this review. Roles of microRNAs that form negative feedback loops with hallmarks of anaphylaxis such as HDAC3 in anaphylaxis and cellular interactions will also be discussed. The roles of MCP1 regulated by HDAC3 in cellular interactions during anaphylaxis are discussed. Roles of exosomes in cellular interactions mediated by HDAC3 during anaphylaxis are also discussed. Thus, review might provide clues for development of drugs targeting passive anaphylaxis.
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