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Dhakal H, Lee S, Kim EN, Choi JK, Kim MJ, Kang J, Choi YA, Baek MC, Lee B, Lee HS, Shin TY, Jeong GS, Kim SH. Gomisin M2 Inhibits Mast Cell-Mediated Allergic Inflammation via Attenuation of FcεRI-Mediated Lyn and Fyn Activation and Intracellular Calcium Levels. Front Pharmacol 2019; 10:869. [PMID: 31427975 PMCID: PMC6688163 DOI: 10.3389/fphar.2019.00869] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 07/08/2019] [Indexed: 12/31/2022] Open
Abstract
Mast cells are effector cells that induce allergic inflammation by secreting inflammatory mediators. Gomisin M2 (G.M2) is a lignan isolated from Schisandra chinensis (Turcz). Baill. exhibiting anti-cancer activities. We aimed to investigate the anti-allergic effects and the underlying mechanism of G.M2 in mast cell–mediated allergic inflammation. For the in vitro study, we used mouse bone marrow–derived mast cells, RBL-2H3, and rat peritoneal mast cells. G.M2 inhibited mast cell degranulation upon immunoglobulin E (IgE) stimulation by suppressing the intracellular calcium. In addition, G.M2 inhibited the secretion of pro-inflammatory cytokines. These inhibitory effects were dependent on the suppression of FcεRI-mediated activation of signaling molecules. To confirm the anti-allergic effects of G.M2 in vivo, IgE-mediated passive cutaneous anaphylaxis (PCA) and ovalbumin-induced active systemic anaphylaxis (ASA) models were utilized. Oral administration of G.M2 suppressed the PCA reactions in a dose-dependent manner. In addition, G.M2 reduced the ASA reactions, including hypothermia, histamine, interleukin-4, and IgE production. In conclusion, G.M2 exhibits anti-allergic effects through suppression of the Lyn and Fyn pathways in mast cells. According to these findings, we suggest that G.M2 has potential as a therapeutic agent for the treatment of allergic inflammatory diseases via suppression of mast cell activation.
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Affiliation(s)
- Hima Dhakal
- Cell & Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu, South Korea.,Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Soyoung Lee
- Immunoregulatory Materials Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, South Korea
| | - Eun-Nam Kim
- College of Pharmacy, Keimyung University, Daegu, South Korea
| | - Jin Kyeong Choi
- Molecular Immunology Section, Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, MD, United States
| | - Min-Jong Kim
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Jinjoo Kang
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Young-Ae Choi
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Moon-Chang Baek
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Byungheon Lee
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Hyun-Shik Lee
- School of Life Sciences, Kyungpook National University, Daegu, South Korea
| | - Tae-Yong Shin
- College of Pharmacy, Woosuk University, Jeonju, South Korea
| | - Gil-Saeng Jeong
- College of Pharmacy, Keimyung University, Daegu, South Korea
| | - Sang-Hyun Kim
- Cell & Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu, South Korea.,Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, South Korea
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Murakami M, Kondo S, Funaba M. Expression and function of alternative splice variants of the mouse TGF-β type I receptor. Cell Biol Int 2013; 32:848-54. [DOI: 10.1016/j.cellbi.2008.03.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2007] [Revised: 02/03/2008] [Accepted: 03/28/2008] [Indexed: 10/22/2022]
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Murakami M, Iwata Y, Funaba M. Expression and transcriptional activity of alternative splice variants of Mitf exon 6. Mol Cell Biochem 2007; 303:251-7. [PMID: 17457519 DOI: 10.1007/s11010-007-9474-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2007] [Accepted: 04/03/2007] [Indexed: 11/27/2022]
Abstract
Microphthalmia-associated transcription factor (Mitf) is a tissue-specific transcription factor. At least nine distinct mouse isoform mRNAs are encoded by alternative splicing of the first exon of Mitf (Mitf-A, -B, -C, -D, -E, -H, -J, -M, and -mc), while exons 2-9 of all Mitf isoforms examined to date are identical. In addition, alternative splice variants of exon 6a encoding 6 amino acid proximal to the basic region of the protein are known in Mitf-A, -H, and -M. In this study, we identified alternative splice variants of exon 6a in other Mitf isoforms (Mitf-E, -J, and -mc) in melanocytes, mast cells, macrophages, and heart. We also compared the transcriptional activity of Mitf variants containing exon 6a to that of Mitf variants that did not contain exon 6a. PCR-RFLP analysis revealed that expression of Mitf with exon 6a was comparable with that of Mitf without exon 6a, irrespective of the specificity of the first exon, or cell type, although Mitf isoforms with different first exons were expressed in a cell type-dependent manner. Luciferase-based reporter assays revealed that transcription of Tyrosinase, which is known Mitf-regulated gene, was elicited more efficiently by expression of Mitf isoforms containing exon 6a, compared to isoforms that did not contain exon 6a. However, when transcription of Tyrp-1, Mmcp-6, and PAI-1 was examined, no significant differences were detected between Mitf isoforms with exon 6a and those without exon 6a, except for Tyrp-1 transcription by Mitf-D/E isoform. These results reveal a diverse pattern of gene expression and different transcriptional activities of Mitf isoforms, suggesting discrete regulation of gene transcription in specific tissues by Mitf.
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Affiliation(s)
- Masaru Murakami
- Laboratory of Molecular Biology, Azabu University School of Veterinary Medicine, Sagamihara, Japan
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