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Li B, Zhang X, Sun Z, Xu B, Wu J, Liu H, Han H, Wang L, Wu W. A Novel Strategy for the Treatment of Allergic Rhinitis: Regulating Treg/Th17 and Th1/Th2 Balance In Vivo by Vitamin D. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:9249627. [PMID: 35959353 PMCID: PMC9357782 DOI: 10.1155/2022/9249627] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/24/2022] [Accepted: 06/30/2022] [Indexed: 11/17/2022]
Abstract
Objective This prospective study is aimed at observing the number of nasal itching and sneezing in rats from the macroscopic level and examine the pathological changes of nasal mucosa, Th1 and Th2-related cytokines, and Treg/Th17 by vitamin D3 administration from the microscopic level, in order to explore the role of vitamin D in allergic rhinitis and to provide theoretical guidance for prevention and treatment. Results There were significant differences in nasal itching and sneezing between the administration groups and the positive groups. Meanwhile, the level of Th1 and Treg in the administration groups increased, while the level of Th2 and Th17 decreased, indicating that the balance of Th1/Th2 was corrected. Our study revealed that vitamin D3 has preventive and therapeutic effects on allergic rhinitis, which provides theoretical guidance for practical application.
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Affiliation(s)
- Baowei Li
- Department of Otolaryngology, Strategic Support Forces Medical Center, Beijing 100101, China
| | - Xiaoli Zhang
- Department of Otolaryngology, Strategic Support Forces Medical Center, Beijing 100101, China
| | - Zhezhe Sun
- Department of Otolaryngology, Strategic Support Forces Medical Center, Beijing 100101, China
| | - Bingxin Xu
- Division Two, Strategic Support Forces Medical Center, Beijing 100101, China
| | - Jihua Wu
- Department of Pathology, Strategic Support Forces Medical Center, Beijing 100101, China
| | - Hongdan Liu
- Department of Otolaryngology, Strategic Support Forces Medical Center, Beijing 100101, China
| | - Haolun Han
- Department of Otolaryngology, Strategic Support Forces Medical Center, Beijing 100101, China
| | - Lei Wang
- Department of Otolaryngology, Strategic Support Forces Medical Center, Beijing 100101, China
| | - Wei Wu
- Department of Otolaryngology, Strategic Support Forces Medical Center, Beijing 100101, China
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Pang M, Yuan Y, Wang D, Li T, Wang D, Shi X, Guo M, Wang C, Zhang X, Zheng G, Yu B, Wang H. Recombinant CC16 protein inhibits the production of pro-inflammatory cytokines via NF-κB and p38 MAPK pathways in LPS-activated RAW264.7 macrophages. Acta Biochim Biophys Sin (Shanghai) 2017; 49:435-443. [PMID: 28338974 PMCID: PMC5412021 DOI: 10.1093/abbs/gmx020] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Indexed: 02/06/2023] Open
Abstract
Accumulating evidence indicates that Clara cell protein-16 (CC16) has anti-inflammatory functions, although the involved molecular pathways have not been completely elucidated. Here, we evaluated the effect of recombinant rat CC16 (rCC16) on the expression of tumor necrosis factor alpha (TNF-α), interleukin-6 (IL-6), and IL-8 in lipopolysaccharide (LPS)-stimulated mouse macrophages (RAW264.7 cells) and explored the underlying molecular mechanisms. It was found that rCC16 inhibited LPS-induced TNF-α, IL-6, and IL-8 expression at both the messenger ribonucleicacid (mRNA) level and protein level in a concentration-dependent manner, as demonstrated by real-time reverse transcriptase-polymerase chain reaction and enzyme-linked immunosorbent assay. Such suppressive effects were accompanied by the inhibition of transcriptional activity and the deoxyribonucleic acid binding activity of nuclear factor (NF)-κB but not activator protein (AP)-1. Western blot analysis further revealed that rCC16 inhibited the increase of nuclear NF-κB and the reduction of cytosolic NF-κB, the phosphorylation and reduction of NF-κB inhibitory protein IκBα, and the p38 mitogen-activated protein kinase (MAPK)-dependent NF-κB activation by phosphorylation at Ser276 of its p65 subunit. Furthermore, rCC16 was found to have no effect on the phosphorylation of c-Jun N-terminal kinase, c-Jun, or the nuclear translocation of c-Jun. In addition, reduction of TNF-α, IL-6, and IL-8 were reversed when the level of endogenous uteroglobin-binding protein was reduced by RNA interference in rCC16- and LPS-treated RAW264.7 cells. Our data suggest that rCC16 suppresses LPS-mediated inflammatory mediator TNF-α, IL-6, and IL-8 production by inactivating NF-κB and p38 MAPK but not AP-1 in RAW264.7 cells.
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Affiliation(s)
- Min Pang
- Department of Respiratory, The First Hospital, Shanxi Medical University, Taiyuan 030001, China
| | - Yangyang Yuan
- School of Basic Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - Dong Wang
- Department of Respiratory, The First Hospital, Shanxi Medical University, Taiyuan 030001, China
| | - Ting Li
- Department of Respiratory, The First Hospital, Shanxi Medical University, Taiyuan 030001, China
| | - Dan Wang
- Department of Respiratory, The First Hospital, Shanxi Medical University, Taiyuan 030001, China
| | - Xiaohong Shi
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Min Guo
- Center of Laboratory Animal, Shanxi Medical University, Taiyuan 030001, China
| | - Chunfang Wang
- Center of Laboratory Animal, Shanxi Medical University, Taiyuan 030001, China
| | - Xinri Zhang
- Department of Respiratory, The First Hospital, Shanxi Medical University, Taiyuan 030001, China
| | - Guoping Zheng
- School of Basic Medicine, Shanxi Medical University, Taiyuan 030001, China
- Centre for Transplantation and Renal Research, Westmead Millennium Institute, University of Sydney, Sydney NSW 2145, Australia
| | - Baofeng Yu
- School of Basic Medicine, Shanxi Medical University, Taiyuan 030001, China
- Correspondence address. Tel/Fax: +86-351-4135772; E-mail: (H.W.)/Tel/Fax: +86-351-4135670; (B.Y.)
| | - Hailong Wang
- School of Basic Medicine, Shanxi Medical University, Taiyuan 030001, China
- Correspondence address. Tel/Fax: +86-351-4135772; E-mail: (H.W.)/Tel/Fax: +86-351-4135670; (B.Y.)
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Pang M, Wang H, Bai JZ, Cao D, Jiang Y, Zhang C, Liu Z, Zhang X, Hu X, Xu J, Du Y. Recombinant rat CC16 protein inhibits LPS-induced MMP-9 expression via NF-κB pathway in rat tracheal epithelial cells. Exp Biol Med (Maywood) 2015; 240:1266-78. [PMID: 25716019 DOI: 10.1177/1535370215570202] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 12/12/2014] [Indexed: 01/02/2023] Open
Abstract
Clara cell protein (CC16) is a well-known anti-inflammatory protein secreted by the epithelial Clara cells of the airways. It is involved in the development of airway inflammatory diseases such as chronic obstructive pulmonary disease and asthma. Previous studies suggest that CC16 gene transfer suppresses expression of interleukin (IL)-8 in bronchial epithelial cells. However, its role in the function of these cells during inflammation is not well understood. In this study, we evaluated the effect of CC16 on the expression of matrix metalloproteinase (MMP)-9 in lipopolysaccharide (LPS)-stimulated rat tracheal epithelial cells and its underlying molecular mechanisms. We generated recombinant rat CC16 protein (rCC16) which was bioactive in inhibiting the activity of phospholipase A2. rCC16 inhibited LPS-induced MMP-9 expression at both mRNA and protein levels in a concentration-dependent (0-2 µg/mL) manner, as demonstrated by real time RT-PCR, ELISA, and zymography assays. Gene transcription and DNA binding studies demonstrated that rCC16 suppressed LPS-induced NF-κB activation and its binding of gene promoters as identified by luciferase reporter and gel mobility shift assays, respectively. Western blotting and immunofluorescence staining analyses further revealed that rCC16 concentration dependently inhibited the effects of LPS on nuclear increase and cytosol reduction of NF-κB, on the phosphorylation and reduction of NF-κB inhibitory IκBα, and on p38 MAPK-dependent NF-κB activation by phosphorylation at Ser276 of its p65 subunit. These data indicate that inhibition of LPS-mediated NF-κB activation by rCC16 involves both translocation- and phosphorylation-dependent signaling pathways. When the tracheal epithelial cells were pretreated with chlorpromazine, an inhibitor of clathrin-mediated endocytosis, cellular uptake of rCC16 and its inhibition of LPS-induced NF-κB nuclear translocation and also MMP-9 production were significantly abolished. Taken together, our data suggest that clathrin-mediated uptake of rCC16 suppresses LPS-mediated inflammatory MMP-9 production through inactivation of NF-κB and p38 MAPK pathways in tracheal epithelial cells.
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Affiliation(s)
- Min Pang
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Hailong Wang
- Academy of Basic Medicine, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Ji-Zhong Bai
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Dawei Cao
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Yi Jiang
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Caiping Zhang
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Zhihong Liu
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Xinri Zhang
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Xiaoyun Hu
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Jianying Xu
- Department of Respiration, Shanxi Da Yi Hospital, Taiyuan, Shanxi 030032, China
| | - Yongcheng Du
- Department of Respiration, the Provincial People's Hospital of Shanxi Medical University, Taiyuan, Shanxi 030012, China
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Wang SB, Deng YQ, Ren J, Xiao BK, Liu Z, Tao ZZ. Exogenous interleukin-10 alleviates allergic inflammation but inhibits local interleukin-10 expression in a mouse allergic rhinitis model. BMC Immunol 2014; 15:9. [PMID: 24568666 PMCID: PMC3939634 DOI: 10.1186/1471-2172-15-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 02/22/2014] [Indexed: 01/08/2023] Open
Abstract
Background Interleukin-10 (IL-10) has an important anti-inflammatory and immunoregulatory function, and its expression is negatively correlated with the development and severity of allergic rhinitis (AR). However, the in vivo effects of exogenous IL-10 on AR have not been studied and the mechanisms underlying the effects of IL-10 have not been fully understood. Here, we investigated the effects of intranasal administration of recombinant mouse (rm) IL-10 on the expression of Th responses and local IL-10 in a mouse model of AR induced by ovalbumin. Results Administration of rmIL-10 during challenge significantly reduced the number of eosinophils and mast cells, as well as Type 2 helper T (Th2) and Th17 cell related cytokine and transcription factor levels in the nasal mucosa and nasal lavage fluid in AR mice. The rmIL-10 treatment significantly inhibited the number of IL-10-positive cells and IL-10 mRNA expression in the nasal mucosa in AR mice. Conclusion Our results show that exogenous IL-10 administrated in challenge phase alleviates nasal allergic inflammation in AR mice, most likely by inhibiting Th2 and Th17 responses. It can also inhibit local IL-10 levels in the nasal mucosa. Our findings indicate that IL-10 may have the potential as an inhibitor of AR.
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Affiliation(s)
| | | | | | | | - Zheng Liu
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China.
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