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Pan Y, Wang Y, Xu M, Zhong M, Peng X, Zeng K, Huang X. The Roles of Innate Immune Cells in Atopic Dermatitis. J Innate Immun 2024; 16:385-396. [PMID: 39025048 PMCID: PMC11324229 DOI: 10.1159/000539534] [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: 03/01/2024] [Accepted: 05/23/2024] [Indexed: 07/20/2024] Open
Abstract
BACKGROUND Atopic dermatitis (AD) is a chronic inflammatory skin condition characterized by recurrent eczematous lesions and severe pruritus. The economic burden and time penalty caused by the relapse of AD reduce patients' life quality. SUMMARY AD has complex pathogenesis, including genetic disorders, epidermal barrier dysfunction, abnormal immune responses, microbial dysbiosis of the skin, and environmental factors. Recently, the role of innate immune cells in AD has attracted considerable attention. This review highlighted recent findings on innate immune cells in the onset and progression of AD. KEY MESSAGES Innate immune cells play essential roles in the pathogenesis of AD and enough attention should be given for treating AD from the perspective of innate immunity in clinics.
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Affiliation(s)
- Yuke Pan
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Youyi Wang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Meinian Xu
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Meizhen Zhong
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaoming Peng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Kang Zeng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaowen Huang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Kwon Y, Kang YJ, Kwon J, Cho SY, Kim J, Le TT, Hwang H, Deshar B, Kim M, Kim JY, Jung JH, Kim HS, Jung SH, Kwon HC, Kim WK. Forsythia velutina Nakai extract: A promising therapeutic option for atopic dermatitis through multiple cell type modulation. Allergy 2024; 79:1242-1257. [PMID: 38037751 DOI: 10.1111/all.15967] [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: 05/23/2023] [Revised: 11/06/2023] [Accepted: 11/13/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND Atopic dermatitis (AD) is a complex condition characterized by impaired epithelial barriers and dysregulated immune cells. In this study, we demonstrated Forsythia velutina Nakai extract (FVE) simultaneously inhibits basophils, macrophages, keratinocytes, and T cells that are closely interrelated in AD development. METHODS We analyzed the effect of FVE on nitric oxide and reactive oxygen species (ROS) production in macrophages, basophil degranulation, T cell activation, and tight junctions in damaged keratinocytes. Expression of cell-type-specific inflammatory mediators was analyzed, and the underlying signaling pathways for anti-inflammatory effects of FVE were investigated. The anti-inflammatory effects of FVE were validated using a DNCB-induced mouse model of AD. Anti-inflammatory activity of compounds isolated from FVE was validated in each immune cell type. RESULTS FVE downregulated the expression of inflammatory mediators and ROS production in macrophages through TLR4 and NRF2 pathways modulation. It significantly reduced basophil degranulation and expression of type 2 (T2) and pro-inflammatory cytokines by perturbing FcεRI signaling. Forsythia velutina Nakai extract also robustly inhibited the expression of T2 cytokines in activated T cells. Furthermore, FVE upregulated the expression of tight junction molecules in damaged keratinocytes and downregulated leukocyte attractants, as well as IL-33, an inducer of T2 inflammation. In the AD mouse model, FVE showed superior improvement in inflammatory cell infiltration and skin structure integrity compared to dexamethasone. Dimatairesinol, a lignan dimer, was identified as the most potent anti-inflammatory FVE compound. CONCLUSION Forsythia velutina Nakai extract and its constituent compounds demonstrate promising efficacy as a therapeutic option for prolonged AD treatment by independently inhibiting various cell types associated with AD and disrupting the deleterious link between them.
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Affiliation(s)
- Yujin Kwon
- Natural Product Research Center, Korea Institute of Science and Technology (KIST), Gangneung, Korea
- Division of Bio-Medical Science & Technology, University of Science and Technology (UST), Daejeon, Korea
| | - Yoon Jin Kang
- Natural Product Research Center, Korea Institute of Science and Technology (KIST), Gangneung, Korea
- Department of Marine Life Sciences, College of Life Science, Gangneung-Wonju National University, Gangneung, Korea
| | - Jaeyoung Kwon
- Division of Bio-Medical Science & Technology, University of Science and Technology (UST), Daejeon, Korea
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST), Gangneung, Korea
| | - Su-Yeon Cho
- Natural Product Research Center, Korea Institute of Science and Technology (KIST), Gangneung, Korea
- Division of Bio-Medical Science & Technology, University of Science and Technology (UST), Daejeon, Korea
| | - Jiyoon Kim
- Department of Pharmacology, Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Tam Thi Le
- Natural Product Research Center, Korea Institute of Science and Technology (KIST), Gangneung, Korea
| | - Hoseong Hwang
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST), Gangneung, Korea
- Department of Biology, Gangneung-Wonju National University, Gangneung, Korea
| | - Barsha Deshar
- Department of Pharmacology, Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Myungjun Kim
- Department of Tropical Medicine, Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul, Korea
| | - Ju Yeong Kim
- Department of Tropical Medicine, Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Hung Jung
- Department of Urology, Yonsei University Wonju College of Medicine/Center of Evidence Based Medicine Institute of Convergence Science, Wonju, Korea
| | - Hyung-Sik Kim
- Department of Oral Biochemistry, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Sang Hoon Jung
- Natural Product Research Center, Korea Institute of Science and Technology (KIST), Gangneung, Korea
- Division of Bio-Medical Science & Technology, University of Science and Technology (UST), Daejeon, Korea
| | - Hak Cheol Kwon
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST), Gangneung, Korea
| | - Won Kyu Kim
- Natural Product Research Center, Korea Institute of Science and Technology (KIST), Gangneung, Korea
- Department of Convergence Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
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Wu W, Song L, Wang H, Feng L, Li Z, Li Y, Li L, Peng L. Supercritical CO 2 fluid extract from Stellariae Radix ameliorates 2,4-dinitrochlorobenzene-induced atopic dermatitis by inhibit M1 macrophages polarization via AMPK activation. ENVIRONMENTAL TOXICOLOGY 2024; 39:3188-3197. [PMID: 38356236 DOI: 10.1002/tox.24145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 12/29/2023] [Accepted: 01/06/2024] [Indexed: 02/16/2024]
Abstract
Yin chai hu (Radix Stellariae) is a root medicine that is frequently used in Chinese traditional medicine to treat fever and malnutrition. In modern medicine, it has been discovered to have anti-inflammatory, anti-allergic, and anticancer properties. In a previous study, we were able to extract lipids from Stellariae Radix using supercritical CO2 extraction (SRE), and these sterol lipids accounted for up to 88.29% of the extract. However, the impact of SRE on the development of atopic dermatitis (AD) has not yet been investigated. This study investigates the inhibitory effects of SRE on AD development using a 2,4-dinitrochlorobenzene (DNCB)-induced AD mouse model. Treatment with SRE significantly reduced the dermatitis score and histopathological changes compared with the DNCB group. The study found that treatment with SRE resulted in a decrease of pro-inflammatory cytokines TNF-α, CXC-10, IL-12, and IL-1β in skin lesions. Additionally, immunohistochemical analysis revealed that SRE effectively suppressed M1 macrophage infiltration into the AD lesion. Furthermore, the anti-inflammatory effect of SRE was evaluated in LPS + INF-γ induced bone marrow-derived macrophages (BMDMs) M1 polarization, SRE inhibited the production of TNF-α, CXC-10, IL-12, and IL-1β and decreased the expression of NLRP3. Additionally, SRE was found to increase p-AMPKT172, but had no effect on total AMPK expression, after administration of the AMPK inhibitor Compound C, the inhibitory effect of SRE on M1 macrophages was partially reversed. The results indicate that SRE has an inhibitory effect on AD, making it a potential therapeutic agent for this atopic disorder.
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Affiliation(s)
- Wei Wu
- School of Life Sciences, Ningxia University, Yinchuan, China
| | - Le Song
- School of Life Sciences, Ningxia University, Yinchuan, China
| | - Hong Wang
- School of Life Sciences, Ningxia University, Yinchuan, China
| | - Lu Feng
- School of Life Sciences, Ningxia University, Yinchuan, China
| | - Zhenkai Li
- School of Life Sciences, Ningxia University, Yinchuan, China
| | - Yanqing Li
- School of Life Sciences, Ningxia University, Yinchuan, China
| | - Le Li
- School of Life Sciences, Ningxia University, Yinchuan, China
| | - Li Peng
- School of Life Sciences, Ningxia University, Yinchuan, China
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Fan P, Xie S, Zhang Z, Yuan Q, He J, Zhang J, Liu X, Liu X, Xu L. Polygonum perfoliatum L. ethanol extract ameliorates 2,4-dinitrochlorobenzene-induced atopic dermatitis-like skin inflammation. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117288. [PMID: 37827300 DOI: 10.1016/j.jep.2023.117288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 10/03/2023] [Accepted: 10/05/2023] [Indexed: 10/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Polygonum perfoliatum L. (PP) is classified as a heat-clearing and detoxifying agent in traditional Chinese medicine, and is believed to possess therapeutic properties for treating eczema, furuncles, and venomous snake bites. Previous studies have demonstrated that PP extract exhibits multiple bioactivities, including antibacterial, anti-inflammatory, antitumor, antioxidation, and antiviral properties. However, no existing studies have evaluated the effects of PP on animal models of atopic dermatitis (AD)-like skin symptoms, which are closely associated with traditional ethnic usage. AIM OF THE STUDY In present study, therefore, we aimed to explore the potential anti-atopic effect of Polygonum perfoliatum L. ethanol extract (PPE) in 2,4-Dinitrochlorobenzene (DNCB)-induced dermatitis-like skin lesions. MATERIALS AND METHODS For reaching this aim, DNCB-induced mice with AD-like skin inflammation were subjected to topical administration of PPE gels for a period of 21 days, and subsequently, the biological impacts of PPE were evaluated. RESULTS PPE gels effectively mitigated AD-like skin symptoms induced by DNCB in mice, as demonstrated by a marked reduction in epidermal thickness and dermatitis severity. Moreover, PPE significantly decreased the production of various cytokines, including TNF-α, IL-6, IL-1β, IL-4, IL-5, IL-13 and IgE, in addition to suppressed the production of key inflammation-related enzymes (iNOS and COX-2) and decreased the phosphorylation of p38 mitogen-activated protein kinase (MAPK) and nuclear factor (NF)-κB in AD-like skin samples. Furthermore, PPE treatment inhibited the abnormally elevated CD4+/CD8+ ratio in DNCB-induced AD mice. The results of the skin irritation test revealed that PPE exhibited no adverse toxicity in mice at dose of 10 mg/day. CONCLUSIONS PPE exhibits potential as a safe therapeutic agent for atopic dermatitis by efficiently mitigating DNCB-induced atopic symptoms and diminishing inflammation, and does not carry the risk of over-immunosuppression or treatment-associated adverse effects.
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Affiliation(s)
- Pinglong Fan
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China; School of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Shuchun Xie
- School of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - ZhiQian Zhang
- School of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Quan Yuan
- School of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Jiajiang He
- School of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Jie Zhang
- School of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Xinyue Liu
- School of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Xiaoyi Liu
- School of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Lieqiang Xu
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, China.
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Huang Y, Zhao C, Zheng G, Yuan Y, Gong L, Liu R, An J. Dictamnine Ameliorates DNFB-Induced Atopic Dermatitis Like Skin Lesions in Mice by Inhibiting M1 Macrophage Polarization and Promoting Autophagy. Biol Pharm Bull 2024; 47:175-186. [PMID: 38092386 DOI: 10.1248/bpb.b23-00436] [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] [Indexed: 01/16/2024]
Abstract
Autophagy and M1 macrophage polarization play important roles in the regulation of inflammation in atopic dermatitis (AD). Dictamnine is one of the main ingredients in Cortex Dictamni, a widely used traditional Chinese medicine for the treatment of dermatitis. In the present study, we investigated the anti-inflammatory effects of dictamnine on AD like skin lesions and M1 macrophage polarization. A 2,4-dinitrofluorobenzene (DNFB) triggered AD like skin lesions models in mice was established to identify the ameliorative effects of dictamnine on AD in vivo. In addition, an M1 macrophage polarization model was co-stimulated by lipopolysaccharide (LPS) and interferon-γ (IFN-γ) using phorbol myristate acetate (PMA) differentiated THP-1 cells, to investigate the effect of dictamnine on promoting autophagy and inhibiting inflammatory factor release. Dictamnine suppressed DNFB-induced skin inflammation by inhibiting M1 macrophage polarization, up-regulating the expression of microtubule-associated protein 1A/1B-light chain 3 (LC3) expression, and promoting macrophage autophagy at inflammatory sites. Dictamnine also could reduce the release of interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), monocyte chemotactic protein-1 (MCP-1), and interleukin-8 (IL-8), and down-regulate the mRNA expression of these genes in LPS-IFN-γ triggered M1 polarized macrophages. Dictamnine ameliorates AD like skin lesions by inhibiting M1 macrophage polarization and promoting autophagy. Hence, dictamnine is expected to be a potential therapeutic candidate for AD.
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Affiliation(s)
- Yihan Huang
- School of Pharmacy, Xi'an Jiaotong University
| | | | | | - Yujuan Yuan
- School of Pharmacy, Xi'an Jiaotong University
| | - Ling Gong
- School of Pharmacy, Xi'an Jiaotong University
| | - Rui Liu
- School of Pharmacy, Xi'an Jiaotong University
| | - Jingang An
- Department of Dermatology, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University
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Wang Q, Wang T, Lio C, Yu X, Chen X, Liu L, Wu Y, Huang H, Qing L, Luo P. Surface hydrolysis-designed AuNPs-zwitterionic-glucose as a novel tool for targeting macrophage visualization and delivery into infarcted hearts. J Control Release 2023; 356:678-690. [PMID: 36898530 DOI: 10.1016/j.jconrel.2023.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 02/27/2023] [Accepted: 03/05/2023] [Indexed: 03/12/2023]
Abstract
Macrophages, innate immune cells, are key players in the maintenance of myocardial homeostasis under normal conditions and tissue repair after injury. The infiltration of macrophages into the injured heart makes them a potentially appealing vehicle for noninvasive imaging and targeted drug delivery of myocardial infarction (MI). In this study, we demonstrated the use of surface hydrolysis-designed AuNPs-zwitterionic-glucose to label macrophages and track their infiltration into isoproterenol hydrochloride (ISO)-induced MI sites noninvasively using CT. The AuNPs-zwitterionic-glucose did not affect the viability or cytokine release of macrophages and were highly taken up by these cells. The in vivo CT images were obtained on Day 4, Day 6, Day 7, and Day 9, and the attenuation was seen to increase in the heart over time compared to the Day 4 scan. In vitro analysis also confirmed the presence of macrophages around injured cardiomyocytes. Additionally, we also addressed the concern of cell tracking or merely AuNP tracking, which is the inherent problem for any form of nanoparticle-labeled cell tracking by using zwitterionic and glucose-functionalized AuNPs. The glucose coated on the surface of AuNPs-zwit-glucose will be hydrolyzed in macrophages, forming only zwitterionic protected AuNPs that cannot be taken up again by endogenous cells in vivo. This will greatly improve the accuracy and precision of imaging and target delivery. We believe this is the first study to noninvasively visualize the infiltration of macrophages into MI hearts using CT, which could be used for imaging and evaluating the possibility of macrophage-mediated delivery in infarcted hearts.
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Affiliation(s)
- Qianlong Wang
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 999078, China; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Tiantian Wang
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 999078, China; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Chonkit Lio
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 999078, China
| | - Xina Yu
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 999078, China
| | - Xiaoyi Chen
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 999078, China
| | - Lancong Liu
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 999078, China
| | - Youjiao Wu
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 999078, China
| | - Hui Huang
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518000, China
| | - Linsen Qing
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
| | - Pei Luo
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 999078, China.
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Zeng H, Zhao B, Zhang D, Rui X, Hou X, Chen X, Zhang B, Yuan Y, Deng H, Ge G. Viola yedoensis Makino formula alleviates DNCB-induced atopic dermatitis by activating JAK2/STAT3 signaling pathway and promoting M2 macrophages polarization. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 103:154228. [PMID: 35689898 DOI: 10.1016/j.phymed.2022.154228] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/20/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Atopic dermatitis (AD), a common inflammatory skin disorder, severely affects the life quality of patients and renders heavy financial burden on patient's family. The Chinese medicine Viola yedoensis Makino formula (VYAC) has been widely used for treating various skin disorders. Previous studies have reported that VYAC is effective in relieving DNCB-induced AD and inflammation. However, the anti-inflammatory mechanism of VYAC is still ill-defined and poorly understood. This study aims to investigate the therapeutic effects of VYAC on DNCB-induced AD and to elucidate the underlying anti-inflammatory mechanisms. METHODOLOGY VYAC were extracted with 70% ethanol and lyophilized for use. AD mice were established by DNCB. The therapeutic effects of VYAC were evaluated by oral administration VYAC (150, 300 and 600 mg/kg) daily in vivo. The histopathological and immunohistochemistry were used to analyze skin lesion and macrophages infiltration, RT-qPCR and Elisa were used to analyze the inflammatory factors in skin tissues and serum. To explore the underlying mechanism of VYAC against AD in vitro. RAW264.7 cells and bone-marrow-derived macrophages (BMDMs) were employed for macrophage polarization analysis. Flow cytometer, immunofluorescence and western blot were used to analyze M2 macrophages markers. STAT3 siRNA were transfected into both cells to validate the effects of VYAC-induced macrophages M2 polarization via JAK2/STAT3 signaling pathway. RESULTS VYAC ameliorated skin lesion of DNCB-induced AD mice by decreased clinical scores and epidermal thickness, decreased the level of pro-inflammatory factors (IL-1β, TNF-α and IL-18) and enhanced IL-10 anti-inflammatory factor level, inhibited macrophages infiltration and promoted M2 macrophages polarization in vivo. VYAC significantly promoted M2 macrophages polarization in vitro. It is observed that VYAC not only inhibited the phosphorylation of JAK2 and STAT3 in RAW264.7 cells and BMDMs, but also accelerated the translocation to the nucleus. What's more, VYAC reduced the polarization of M2 macrophage by activating JAK2/STAT3 signaling pathway was observed in both cells. CONCLUSIONS Our findings demonstrate that VYAC significantly ameliorates skin lesion of DNCB-induced AD mice and reduces the levels of inflammatory factors by activating JAK2/STAT3 signaling pathway and promoting M2 macrophages polarization.
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Affiliation(s)
- Hairong Zeng
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China; Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Bei Zhao
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Die Zhang
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Xin Rui
- Baoshan Branch, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xudong Hou
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Xingxing Chen
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Benrui Zhang
- Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Yi Yuan
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China.
| | - Hongping Deng
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
| | - Guangbo Ge
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
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Hsa_circ_0004287 inhibits macrophage-mediated inflammation in an N6-methyladenosine-dependent manner in atopic dermatitis and psoriasis. J Allergy Clin Immunol 2021; 149:2021-2033. [PMID: 34953789 DOI: 10.1016/j.jaci.2021.11.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 11/03/2021] [Accepted: 11/26/2021] [Indexed: 11/20/2022]
Abstract
BACKGROUND Circular RNA (circRNA) was reported to involve in various diseases; however, its role in atopic dermatitis (AD) or psoriasis remains unclear.background Objective: We sought to determine the differential expression profiles of circRNAs in peripheral blood mononuclear cells (PBMCs) between healthy controls and AD patients, and explore the mechanisms underlying the effects of circRNAs on the pathogenesis of AD. METHODS The differential expression profiles of circRNAs were analyzed by circRNA microarray. In vitro function and mechanisms by which circRNAs regulate macrophage-mediated inflammation were detected by RT-qPCR, western blotting, RNA stability assay, immunoprecipitation, enzyme-linked immunosorbent assay (ELISA), and methylated RNA immunoprecipitation (MeRIP) assay. In vivo roles of circRNAs were determined in 2,4-dinitrochlorobenzene (DNCB)-induced dermatitis and imiquimod (IMQ)-induced psoriasis mouse model. RESULTS We identified a functional unknown circRNA hsa_circ_0004287 from 88750 circRNAs, which was upregulated in PBMCs of both AD and psoriasis patients, and mainly expressed by macrophages under inflammatory conditions. hsa_circ_0004287 inhibited M1 macrophage activation in vitro, and macrophage-specific overexpression of hsa_circ_0004287 alleviated skin inflammation in both AD- and psoriasis-like mice. Mechanistically, hsa_circ_0004287 reduced the stability of its host gene metastasis associated lung adenocarcinoma transcript 1 (MALAT1) by competitively binding to IGF2BP3 with MALAT1 in an N6-methyladenosine (m6A)-dependent manner. Lower levels of MALAT1 promoted the ubiquitination degradation of S100A8/S100A9, thereby impeding p38/MAPK phosphorylation and macrophage-mediated inflammation.results CONCLUSION: Hsa_circ_0004287 inhibits M1 macrophage activation in an m6A-dependent manner in AD and psoriasis, and may serve as a general therapeutic candidate for AD and psoriasis. CONCLUSION
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