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Xie CC, Zhang BP, Wang HN, Li WY, Cai ZL, He Y, Ji K, Chen JJ. Flavoring agent dihydrocoumarin alleviates IgE-mediated mast cell activation and allergic inflammation. Food Funct 2022; 13:3621-3631. [PMID: 35262138 DOI: 10.1039/d2fo00190j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mast cells (MCs) are the main effector cells in the onset of high-affinity receptor for IgE (FcεRI)-mediated allergic diseases. The aim of this study was to test whether dihydrocoumarin (DHC), a food flavoring agent derived from Melilotus officinalis, can block IgE-induced MC activation effects and to examine the potential molecular mechanisms by which DHC affects MC activation. Rat basophilic leukemia cells (RBLs) and mouse bone marrow-derived mast cells (BMMCs) were sensitized with anti-dinitrophenol (DNP) immunoglobulin (Ig)E antibodies, stimulated with DNP-human serum albumin antigen, and treated with DHC. Western blot analyses were performed to detect the expression of signaling proteins. Murine IgE-mediated passive cutaneous anaphylaxis (PCA) and ovalbumin (OVA)-induced active systemic anaphylaxis (ASA) models were used to examine DHC effects on allergic reactions in vivo. DHC inhibited MC degranulation, as evidenced by reduced β-hexosaminidase activity and histamine levels, and reduced morphological changes associated with MC activation, namely cellular elongation and F-actin reorganization. DHC inhibited the activation of MAPK, NF-κB, and AP-1 pathways in IgE-activated MCs. Additionally, DHC could attenuate IgE/Ag-induced allergic reactions (dye extravasation and ear thickening) in PCA as well as OVA challenge-induced reactions in ASA mice (body temperature, serum histamine and IL-4 secretion changes). In conclusion, DHC suppressed MC activation. DHC may represent a new MC-suppressing treatment strategy for the treatment of IgE-mediated allergic diseases.
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Affiliation(s)
- Chu-Chu Xie
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, China.
| | - Bo-Ping Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, China.
| | - Hui-Na Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, China.
| | - Wei-Yong Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, China.
| | - Ze-Lang Cai
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, China.
| | - Yong He
- Shenzhen University General Hospital, Shenzhen 518060, China.
| | - Kunmei Ji
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, China.
| | - Jia-Jie Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, China.
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Naccache A, Louiset E, Duparc C, Laquerrière A, Patrier S, Renouf S, Gomez-Sanchez CE, Mukai K, Lefebvre H, Castanet M. Temporal and spatial distribution of mast cells and steroidogenic enzymes in the human fetal adrenal. Mol Cell Endocrinol 2016; 434:69-80. [PMID: 27302892 DOI: 10.1016/j.mce.2016.06.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 06/03/2016] [Accepted: 06/10/2016] [Indexed: 11/16/2022]
Abstract
Mast cells are present in the human adult adrenal with a potential role in the regulation of aldosterone secretion in both normal cortex and adrenocortical adenomas. We have investigated the human developing adrenal gland for the presence of mast cells in parallel with steroidogenic enzymes profile and serotonin signaling pathway. RT-QPCR and immunohistochemical studies were performed on adrenals at 16-41 weeks of gestation (WG). Tryptase-immunopositive mast cells were found from 18 WG in the adrenal subcapsular layer, close to 3βHSD- and CYP11B2-immunoreactive cells, firstly detected at 18 and 24 WG, respectively. Tryptophan hydroxylase and serotonin receptor type 4 expression increased at 30 WG before the CYP11B2 expression surge. In addition, HDL and LDL cholesterol receptors were expressed in the subcapsular zone from 24 WG. Altogether, our findings suggest the implication of mast cells and serotonin in the establishment of the mineralocorticoid synthesizing pathway during fetal adrenal development.
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Affiliation(s)
- Alexandre Naccache
- INSERM U982, Laboratory of Differentiation & Neuronal and Neuroendocrine Communication, Institute for Research and Innovation in Biomedicine, University of Rouen, Mont-Saint-Aignan, France.
| | - Estelle Louiset
- INSERM U982, Laboratory of Differentiation & Neuronal and Neuroendocrine Communication, Institute for Research and Innovation in Biomedicine, University of Rouen, Mont-Saint-Aignan, France.
| | - Céline Duparc
- INSERM U982, Laboratory of Differentiation & Neuronal and Neuroendocrine Communication, Institute for Research and Innovation in Biomedicine, University of Rouen, Mont-Saint-Aignan, France.
| | | | - Sophie Patrier
- Pathology Laboratory, University Hospital of Rouen, Rouen, France.
| | - Sylvie Renouf
- INSERM U982, Laboratory of Differentiation & Neuronal and Neuroendocrine Communication, Institute for Research and Innovation in Biomedicine, University of Rouen, Mont-Saint-Aignan, France.
| | - Celso E Gomez-Sanchez
- Endocrine Section, Department of Medicine, G.V. (Sonny) Montgomery VA Medical Center and University of Mississippi Medical Center, Jackson, MS, USA.
| | - Kuniaki Mukai
- Department of Biochemistry, School of Medicine, Keio University, Tokyo, 160-8582, Japan.
| | - Hervé Lefebvre
- INSERM U982, Laboratory of Differentiation & Neuronal and Neuroendocrine Communication, Institute for Research and Innovation in Biomedicine, University of Rouen, Mont-Saint-Aignan, France.
| | - Mireille Castanet
- INSERM U982, Laboratory of Differentiation & Neuronal and Neuroendocrine Communication, Institute for Research and Innovation in Biomedicine, University of Rouen, Mont-Saint-Aignan, France.
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Fathimunnisa M, Manikandan H, Selvanayagam S. Synthesis of novel (2E)-1-[4-(2,4-difluorophenyl)phenyl]3-arylprop-2-en-1-ones: Investigation on spectral, antibacterial, molecular docking and theoretical studies. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.06.078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sun S, Liu W, Cheng N, Zhang B, Cao Z, Yao K, Liang D, Zuo A, Guo G, Zhang J. A thermoresponsive chitosan-NIPAAm/vinyl laurate copolymer vector for gene transfection. Bioconjug Chem 2005; 16:972-80. [PMID: 16029039 DOI: 10.1021/bc0500701] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A carboxyl-terminated N-isopropylacrylamide/vinyl laurate (VL) copolymer was prepared and coupled with chitosan (molecular weight = 2000) to produce a chitosan-NIPAAm/VL copolymer (PNVLCS) vector. The aqueous solution of PNVLCS displayed an obvious thermoresponsive behavior with a lower critical solution temperature (LCST) about 26 degrees C. The transmission electron microscopy (TEM) showed that the size of PNVLCS/DNA complexes varied with charge ratios (+/-), and the smaller nanoparticles were formed at higher charge ratios. DLS revealed that the size of complex particles was dependent on temperature. The results of temperature-variable circular dichroism (CD), UV, and electrophoresis retardation indicated that at lower charge ratios, DNA in the complexes assume a B conformation, whereas increasing charge ratios caused B --> C type conformation transformation; the dissociation-formation of PNVLCS/DNA complexes could be tuned by varying temperature: at 37 degrees C, the collapse of PNIPAAm in PNVLCS was favorable for the formation of compact complexes, shielding more DNA from exposure; at 20 degrees C, the hydrated and extended PNIPAAm chains facilitated the unpacking of DNA from PNVLCS, increasing the exposure of DNA. PNVLCS was used to transfer plasmid-encoding beta-galactosidase into C2C12 cells. The level of gene expression could be controlled by varying incubation temperature. The transfection efficiency of PNVLCS was well improved by temporarily reducing culture temperature to 20 degrees C, whereas naked DNA and Lipofectamine 2000 did not demonstrate the characteristics of thermoresponsive gene transfection.
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Affiliation(s)
- Shujun Sun
- Research Institute of Polymeric Materials, Tianjin University, Tianjin 300072, PR China
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