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Inamoto T, Furuta K, Han C, Uneme M, Kano T, Ishikawa K, Kaito C. Short-chain fatty acids stimulate dendrite elongation in dendritic cells by inhibiting histone deacetylase. FEBS J 2023; 290:5794-5810. [PMID: 37646105 DOI: 10.1111/febs.16945] [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: 02/27/2023] [Revised: 07/08/2023] [Accepted: 08/29/2023] [Indexed: 09/01/2023]
Abstract
Dendritic cells activate immune responses by presenting pathogen-derived molecules. The dendrites of dendritic cells contribute to the incorporation of foreign antigens or presenting antigens to T cells. Short-chain fatty acids (SCFAs), such as acetic, propionic, butyric and valeric acids, have many effects on immune responses by activating specific receptors or inhibiting a histone deacetylase (HDAC), although their effect on dendrite formation in dendritic cells is unknown. In the present study, we aimed to investigate the effect of SCFAs on dendrite elongation using a dendritic cell line (DC2.4 cells) and mouse bone marrow-derived dendritic cells. We found that SCFAs induced dendrite elongation. The elongation was reduced by inhibitors of Src family kinase (SFK), phosphatidylinositol-3 kinase (PI3K), Rho family GTPases (Cdc42, Rac1) or actin polymerization, indicating that SCFAs promote dendrite elongation by activating actin polymerization via the SFK/PI3K/Rho family GTPase signaling pathway. We showed that agonists for SCFA receptors GPR43 and GPR109a did not promote dendrite elongation. By contrast, HDAC inhibitors, including trichostatin A, promoted dendrite elongation in DC2.4 cells, and the promoting activity of trichostatin A was decreased by inhibiting the SFK/PI3K/Rho family GTPase signaling pathway or actin polymerization. Furthermore, DC2.4 cells treated with valeric acid showed enhanced uptake of soluble proteins, insoluble beads and Staphylococcus aureus. We also found that treatment with valeric acid enhanced major histocompatibility complex class II-mediated antigen presentation in bone marrow-derived dendritic cells. These results suggest that SCFAs promote dendrite elongation by inhibiting HDAC, stimulating the SFK/PI3K/Rho family pathway and activating actin polymerization, resulting in increased antigen uptake and presentation in dendritic cells.
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Affiliation(s)
- Takuho Inamoto
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Japan
| | - Kazuyuki Furuta
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Japan
| | - Cheng Han
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Japan
| | - Mio Uneme
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Japan
| | - Tomonori Kano
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Japan
| | - Kazuya Ishikawa
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Japan
| | - Chikara Kaito
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Japan
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Tan D, Lu M, Cai Y, Qi W, Wu F, Bao H, Qv M, He Q, Xu Y, Wang X, Shen T, Luo J, He Y, Wu J, Tang L, Barkat MQ, Xu C, Wu X. SUMOylation of Rho-associated protein kinase 2 induces goblet cell metaplasia in allergic airways. Nat Commun 2023; 14:3887. [PMID: 37393345 PMCID: PMC10314948 DOI: 10.1038/s41467-023-39600-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 06/21/2023] [Indexed: 07/03/2023] Open
Abstract
Allergic asthma is characterized by goblet cell metaplasia and subsequent mucus hypersecretion that contribute to the morbidity and mortality of this disease. Here, we explore the potential role and underlying mechanism of protein SUMOylation-mediated goblet cell metaplasia. The components of SUMOylaion machinery are specifically expressed in healthy human bronchial epithelia and robustly upregulated in bronchial epithelia of patients or mouse models with allergic asthma. Intratracheal suppression of SUMOylation by 2-D08 robustly attenuates not only allergen-induced airway inflammation, goblet cell metaplasia, and hyperreactivity, but IL-13-induced goblet cell metaplasia. Phosphoproteomics and biochemical analyses reveal SUMOylation on K1007 activates ROCK2, a master regulator of goblet cell metaplasia, by facilitating its binding to and activation by RhoA, and an E3 ligase PIAS1 is responsible for SUMOylation on K1007. As a result, knockdown of PIAS1 in bronchial epithelia inactivates ROCK2 to attenuate IL-13-induced goblet cell metaplasia, and bronchial epithelial knock-in of ROCK2(K1007R) consistently inactivates ROCK2 to alleviate not only allergen-induced airway inflammation, goblet cell metaplasia, and hyperreactivity, but IL-13-induced goblet cell metaplasia. Together, SUMOylation-mediated ROCK2 activation is an integral component of Rho/ROCK signaling in regulating the pathological conditions of asthma and thus SUMOylation is an additional target for the therapeutic intervention of this disease.
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Affiliation(s)
- Dan Tan
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Key Laboratory of CFDA for Respiratory Drug Research, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Meiping Lu
- National Clinical Research Center for Child Health, the Children's Hospital of Zhejiang University School of Medicine, Hangzhou, 310053, China.
| | - Yuqing Cai
- National Clinical Research Center for Child Health, the Children's Hospital of Zhejiang University School of Medicine, Hangzhou, 310053, China
| | - Weibo Qi
- Department of Thoracic Surgery, the Affiliated Hospital of Jiaxing University, Jiaxing, 314001, China
| | - Fugen Wu
- Department of Paediatrics, the First People's Hospital of Wenling City, Wenling City, 317500, China
| | - Hangyang Bao
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Meiyu Qv
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Qiangqiang He
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Yana Xu
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Xiangzhi Wang
- National Clinical Research Center for Child Health, the Children's Hospital of Zhejiang University School of Medicine, Hangzhou, 310053, China
| | - Tingyu Shen
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Jiahao Luo
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Yangxun He
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Junsong Wu
- Department of Critical Care Medicine, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Lanfang Tang
- National Clinical Research Center for Child Health, the Children's Hospital of Zhejiang University School of Medicine, Hangzhou, 310053, China
| | - Muhammad Qasim Barkat
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Chengyun Xu
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China.
- Key Laboratory of CFDA for Respiratory Drug Research, Zhejiang University School of Medicine, Hangzhou, 310058, China.
- National Clinical Research Center for Child Health, the Children's Hospital of Zhejiang University School of Medicine, Hangzhou, 310053, China.
| | - Ximei Wu
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China.
- Key Laboratory of CFDA for Respiratory Drug Research, Zhejiang University School of Medicine, Hangzhou, 310058, China.
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3
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Yue C, Wang W, Gao S, Ye J, Zhang T, Xing Z, Xie Y, Qian H, Zhou X, Li S, Yu A, Wang L, Wang J, Hua C. Agomir miRNA-150-5p alleviates pristane-induced lupus by suppressing myeloid dendritic cells activation and inflammation via TREM-1 axis. Inflamm Res 2023:10.1007/s00011-023-01754-8. [PMID: 37326693 DOI: 10.1007/s00011-023-01754-8] [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: 04/10/2023] [Revised: 05/12/2023] [Accepted: 05/30/2023] [Indexed: 06/17/2023] Open
Abstract
OBJECTIVE Triggering receptors expressed on myeloid cells-1 (TREM-1) has been shown to participate in inflammatory autoimmune diseases. Nevertheless, the detailed underlying mechanisms and therapeutic benefits by targeting TREM-1 remain elusive, especially in myeloid dendritic cells (mDCs) and systemic lupus erythematosus (SLE). Disorders of epigenetic processes including non-coding RNAs give rise to SLE, resulting in complicated syndromes. Here, we aim to address this issue and explore the miRNA to inhibit the activation of mDCs and alleviate the progress of SLE by targeting TREM-1 signal axis. METHODS Bioinformatics methods were used to analyze the differentially expressed genes (DEGs) between patients with SLE and healthy individuals by four mRNA microarray datasets from Gene Expression Omnibus (GEO). Then we identified the expression of TREM-1 and its soluble form (sTREM-1) in clinical samples by ELISA, quantitative real-time PCR and Western blot. Phenotypic and functional changes of mDCs elicited by TREM-1 agonist were determined. Three databases of miRNAs target prediction and a dual-luciferase reporter assay were used to screen and verify miRNAs that can directly inhibit TREM-1 expression in vitro. Moreover, pristane-induced lupus mice were injected with miR-150-5p agomir to evaluate the effects of miR-150-5p on mDCs in lymphatic organs and disease activity in vivo. RESULTS We screened TREM-1 as one of the hub genes closely correlated with the progression of SLE and identified sTREM-1 in serum as a valuable diagnostic biomarker for SLE. Moreover, activation of TREM-1 by its agonist promoted activation and chemotaxis of mDCs and increased the production of inflammatory cytokines and chemokines, showing higher expression of IL-6, TNF-α, and MCP-1. We showed that lupus mice displayed a unique miRNA signature in spleen, among which miR-150 was the most significantly expressed miRNA that targeting TREM-1 compared with wild type group. Transfection of miRNA-150-5p mimics directly suppressed the expression of TREM-1 by binding to its 3' UTR. Our in vivo experiments first indicated that administration of miR-150-5p agomir effectively ameliorated lupus symptoms. Intriguingly, miR-150 inhibited the over activation of mDCs through TREM-1 signal pathway in lymphatic organs and renal tissues. CONCLUSIONS TREM-1 represents a potentially novel therapeutic target and we identify miR-150-5p as one of the mechanisms to alleviate lupus disease, which is attributable for inhibiting mDCs activation through TREM-1 signaling pathway.
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Affiliation(s)
- Chenran Yue
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China
| | - Wenqian Wang
- Department of Plastic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China
| | - Sheng Gao
- Laboratory Animal Center, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China
| | - Jianzhong Ye
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China
| | - Ting Zhang
- Department of Rheumatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China
| | - Zhouhang Xing
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China
| | - Yuanyuan Xie
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China
| | - Hengrong Qian
- School of the 2Nd Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China
| | - Xueyin Zhou
- School of the 2Nd Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China
| | - Shuting Li
- School of the 2Nd Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China
| | - Anni Yu
- School of the 2Nd Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China
| | - Liangxing Wang
- Key Laboratory of Heart and Lung, Division of Pulmonary Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China.
| | - Jianguang Wang
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China.
| | - Chunyan Hua
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China.
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Bao Y, Zhu X. Role of Chemokines and Inflammatory Cells in Respiratory Allergy. J Asthma Allergy 2022; 15:1805-1822. [PMID: 36575714 PMCID: PMC9790160 DOI: 10.2147/jaa.s395490] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/05/2022] [Indexed: 12/24/2022] Open
Abstract
The idea of "one airway, one disease" has been gaining importance in the last decade. In the upper and lower airways, allergic mechanisms interact with each other. In the initial stage of respiratory allergic inflammation, allergens contact the respiratory epithelium, which produces chemokines and inflammatory factors, which cause allergic reactions by binding to the corresponding receptors and chemotactic various inflammatory cells to reach the epithelium and tissues. It also drives inflammatory cells to activate and produce more inflammatory factors, thus producing a cascade amplification effect. Inflammatory cell aggregation and activation are very complex and interact with each other in a lattice structure. By blocking the action of various chemokines, inflammatory cell aggregation is reduced, and ultimately the symptoms of respiratory allergy are alleviated. Chemokines can serve as cues for coordinated recruitment of immune cells into and out of tissues, as well as directing the spatial organization of immune cells within tissues and cellular interactions. Chemokines are critical in directing immune cell migration and thus have an important role in the direction of respiratory allergy: however, chemokines are also involved in the production and recruitment of immune cells that contribute to respiratory allergy. In this article, linking the upper and lower respiratory tracts. We review the role of the chemokine system in the respiratory immune response and discuss how respiratory disease modulates overall chemokines to shape the type and outcome of the immune response to the treatment of respiratory allergic disease so that we can further deepen our knowledge of chemokines in the direction of respiratory allergy. In the future, we can do drug research and development based on this network structure and explore new research directions.
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Affiliation(s)
- Youwei Bao
- Department of Otolaryngology Head & Neck Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Xinhua Zhu
- Department of Otolaryngology Head & Neck Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China,Correspondence: Xinhua Zhu, Email
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5
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Development and validation of an RNA-seq-based transcriptomic risk score for asthma. Sci Rep 2022; 12:8643. [PMID: 35606385 PMCID: PMC9126925 DOI: 10.1038/s41598-022-12199-0] [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: 02/15/2022] [Accepted: 05/04/2022] [Indexed: 11/30/2022] Open
Abstract
Recent progress in RNA sequencing (RNA-seq) allows us to explore whole-genome gene expression profiles and to develop predictive model for disease risk. The objective of this study was to develop and validate an RNA-seq-based transcriptomic risk score (RSRS) for disease risk prediction that can simultaneously accommodate demographic information. We analyzed RNA-seq gene expression data from 441 asthmatic and 254 non-asthmatic samples. Logistic least absolute shrinkage and selection operator (Lasso) regression analysis in the training set identified 73 differentially expressed genes (DEG) to form a weighted RSRS that discriminated asthmatics from healthy subjects with area under the curve (AUC) of 0.80 in the testing set after adjustment for age and gender. The 73-gene RSRS was validated in three independent RNA-seq datasets and achieved AUCs of 0.70, 0.77 and 0.60, respectively. To explore their biological and molecular functions in asthma phenotype, we examined the 73 genes by enrichment pathway analysis and found that these genes were significantly (p < 0.0001) enriched for DNA replication, recombination, and repair, cell-to-cell signaling and interaction, and eumelanin biosynthesis and developmental disorder. Further in-silico analyses of the 73 genes using Connectivity map shows that drugs (mepacrine, dactolisib) and genetic perturbagens (PAK1, GSR, RBM15 and TNFRSF12A) were identified and could potentially be repurposed for treating asthma. These findings show the promise for RNA-seq risk scores to stratify and predict disease risk.
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6
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Chen S, Bai Y, Wang Y, Liang C, Du K, Wang S, Li J, Chang YX. Immunosuppressive effect of Columbianadin on maturation, migration, allogenic T cell stimulation and phagocytosis capacity of TNF-α induced dendritic cells. JOURNAL OF ETHNOPHARMACOLOGY 2022; 285:114918. [PMID: 34919989 DOI: 10.1016/j.jep.2021.114918] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/07/2021] [Accepted: 12/12/2021] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Angelicae pubescentis radix (APR) has a long history in the treatment of rheumatoid arthritis (RA) in China. It has the effects of dispelling wind to eliminate dampness, removing arthralgia and stopping pain in the Chinese Pharmacopeia, but its mechanisms was unclear. Columbianadin (CBN) was one of the main bioactive compounds of APR, and has many pharmacological effects. But the immunosuppressive effect of CBN on DCs and the potential mechanism needed to be explored. AIM OF THE STUDY The study was aimed to clarify the immunosuppressive effect of CBN on maturation, migration, allogenic T cell stimulation and phagocytosis capacity of TNF-α induced DCs. MATERIALS AND METHODS Bone marrow-derived DCs were obtained and cultured from C57BL/6 mice in accordance with protocol. The phenotypic study (CD11c, CD40, CD80, CD86 and MHC Ⅱ) were measured by flow cytometry. FITC-dextran were uptaked by DCs and the change of endocytosis activity were mediated by acquired mannose receptor. Transwell chambers were used to detect the migration ability of DCs. Mixed leukocyte reaction (MLR) assay was used to detect the allostimulatory ability of CBN on TNF-α stimulated DCs. The secretion of cytokines and chemokines was measured by ELISA Kit. TLRs gene and MAPKs/NF-κB protein expression were checked by qRT-PCR and Western blot. RESULTS CBN inhibited the maturation of TNF-α-induced DCs while maintaining phagocytosis capabilities. Additionally, CBN inhibited the migration of TNF-α stimulated DCs, which related to reduce the production of chemokines (MCP-1, MIP-1α). Notably, CBN could suppress the proliferation of CD4+T cells by inhibiting DCs maturation, and decrease the proinflammatory cytokines IL-6 production. Furthermore, CBN inhibited mRNA expression of TLR2, TLR7 and TLR9 in TNF-α-activated DCs. Meanwhile, the phosphorylation of p38, JNK1/2 and NF-κB protein were significantly inhibited in CBN treated DCs. CONCLUSIONS These findings provided novel insights into the pharmacological activity of CBN. They also indicated that inhibition DCs maturation owning to the immunosuppressive effect of CBN. CBN was expected as a potential immunosuppressant and TLRs/MAPKs/NF-κB pathway may be an important mechanism for CBN's immunosuppressive activity.
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Affiliation(s)
- Shujing Chen
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratories of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Yun Bai
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratories of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Yuan Wang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratories of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Chunxiao Liang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratories of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Kunze Du
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratories of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Shuangqi Wang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratories of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Jin Li
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratories of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Yan-Xu Chang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratories of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
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Wang X, Xu C, Ji J, Cai Y, Shu Y, Chao Y, Wu X, Zou C, Wu X, Tang L. IL-4/IL-13 upregulates Sonic hedgehog expression to induce allergic airway epithelial remodeling. Am J Physiol Lung Cell Mol Physiol 2020; 318:L888-L899. [PMID: 32130032 DOI: 10.1152/ajplung.00186.2019] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
We have previously demonstrated that upregulation of Sonic hedgehog (SHH) expression in allergic airway epithelia essentially contributes to the goblet cell metaplasia and mucous hypersecretion. However, the mechanism underlying the upregulation of SHH expression remains completely unknown. In cultured human airway epithelial cells, IL-4/IL-13 but not IL-5 robustly induces the mRNA and protein expression of SHH and in turn activates SHH signaling by promoting the JAK/STAT6-controlling transcription of SHH gene. Moreover, intratracheal instillation of IL-4 and/or IL-13 robustly activates STAT6 and concomitantly upregulates SHH expression in mouse airway epithelia, whereas, in Club cell 10-kDa protein (CC10)-positive airway epithelial cells of children with asthma, activated STAT6 closely correlates with the increased expression of SHH and high activity of SHH signaling. Finally, intratracheal inhibition of STAT6 by AS-1517499 significantly diminished the allergen-induced upregulation of SHH expression, goblet cell phenotypes, and airway hyperresponsiveness, in an ovalbumin- or house dust mite-induced mouse model with allergic airway inflammation,. Together, upregulation of SHH expression by IL-4/IL-13-induced JAK/STAT6 signaling contributes to allergic airway epithelial remodeling, and this study thus provides insight into how morphogen signaling is coordinated with Th2 cytokine pathways to regulate tissue remodeling in chronic airway diseases.
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Affiliation(s)
- Xiangzhi Wang
- Department of Respiratory Medicine, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,National Clinical Research Center for Child Health, Hangzhou, China
| | - Chengyun Xu
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of CFDA for Respiratory Drug Research, Zhejiang University School of Medicine, Hangzhou, China
| | - Junyan Ji
- Department of Respiratory Medicine, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,National Clinical Research Center for Child Health, Hangzhou, China
| | - Yuqing Cai
- Department of Respiratory Medicine, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,National Clinical Research Center for Child Health, Hangzhou, China
| | - Yingying Shu
- National Clinical Research Center for Child Health, Hangzhou, China.,Department of Endocrinology, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yunqi Chao
- National Clinical Research Center for Child Health, Hangzhou, China.,Department of Endocrinology, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiling Wu
- Department of Respiratory Medicine, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,National Clinical Research Center for Child Health, Hangzhou, China
| | - Chaochun Zou
- National Clinical Research Center for Child Health, Hangzhou, China.,Department of Endocrinology, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ximei Wu
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of CFDA for Respiratory Drug Research, Zhejiang University School of Medicine, Hangzhou, China
| | - Lanfang Tang
- Department of Respiratory Medicine, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,National Clinical Research Center for Child Health, Hangzhou, China
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