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Mehling K, Becker J, Chen J, Scriba S, Kindl G, Jakubietz R, Sommer C, Hartmannsberger B, Rittner HL. Bilateral deficiency of Meissner corpuscles and papillary microvessels in patients with acute complex regional pain syndrome. Pain 2024; 165:1613-1624. [PMID: 38335004 PMCID: PMC11190899 DOI: 10.1097/j.pain.0000000000003168] [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: 06/23/2023] [Revised: 11/28/2023] [Accepted: 11/29/2023] [Indexed: 02/10/2024]
Abstract
ABSTRACT Complex regional pain syndrome (CRPS) presents postinjury with disproportionate pain and neuropathic, autonomic, motor symptoms, and skin texture affection. However, the origin of these multiplex changes is unclear. Skin biopsies offer a window to analyze the somatosensory and vascular system as well as skin trophicity with their protecting barriers. In previous studies, barrier-protective exosomal microRNAs were altered in CRPS. We here postulated that tissue architecture and barrier proteins are already altered at the beginning of CRPS. We analyzed ipsilateral and contralateral skin biopsies of 20 fully phenotyped early CRPS patients compared with 20 age- and sex-matched healthy controls. We established several automated unbiased methods to comprehensively analyze microvessels and somatosensory receptors as well as barrier proteins, including claudin-1, claudin-5, and claudin-19. Meissner corpuscles in the skin were bilaterally reduced in acute CRPS patients with some of them lacking these completely. The number of Merkel cells and the intraepidermal nerve fiber density were not different between the groups. Dermal papillary microvessels were bilaterally less abundant in CRPS, especially in patients with allodynia. Barrier proteins in keratinocytes, perineurium of dermal nerves, Schwann cells, and papillary microvessels were not affected in early CRPS. Bilateral changes in the tissue architecture in early CRPS might indicate a predisposition for CRPS that manifests after injury. Further studies should evaluate whether these changes might be used to identify risk patients for CRPS after trauma and as biomarkers for outcome.
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Affiliation(s)
- Katharina Mehling
- Department of Anesthesiology, Intensive Care, Emergency and Pain Medicine, Center for Interdisciplinary Pain Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Juliane Becker
- Department of Anesthesiology, Intensive Care, Emergency and Pain Medicine, Center for Interdisciplinary Pain Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Jeremy Chen
- Department of Anesthesiology, Intensive Care, Emergency and Pain Medicine, Center for Interdisciplinary Pain Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Sabrina Scriba
- Department of Anesthesiology, Intensive Care, Emergency and Pain Medicine, Center for Interdisciplinary Pain Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Gudrun Kindl
- Department of Anesthesiology, Intensive Care, Emergency and Pain Medicine, Center for Interdisciplinary Pain Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Rafael Jakubietz
- Department Surgery II, University Hospital Würzburg, Würzburg, Germany
| | - Claudia Sommer
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Beate Hartmannsberger
- Department of Anesthesiology, Intensive Care, Emergency and Pain Medicine, Center for Interdisciplinary Pain Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Heike L. Rittner
- Department of Anesthesiology, Intensive Care, Emergency and Pain Medicine, Center for Interdisciplinary Pain Medicine, University Hospital Würzburg, Würzburg, Germany
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Wang B, Wang F, Qu L, Ma H, Cheng Y, Wu X, Liu J, He L. Prinsepia utilis Royle polysaccharides promote skin barrier repair through the Claudin family. Skin Res Technol 2024; 30:e13848. [PMID: 38978226 PMCID: PMC11231044 DOI: 10.1111/srt.13848] [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: 04/10/2024] [Accepted: 06/16/2024] [Indexed: 07/10/2024]
Abstract
BACKGROUND Plant polysaccharides have various biological activities. However, few studies have been conducted on the skin barrier of Prinsepia utilis Royle polysaccharide extract (PURP). MATERIALS AND METHODS The proportions of polysaccharides, monosaccharides and proteins were determined by extracting polysaccharides from fruit meal using water. The healing rate was measured by cell scratch assays. SDS-damaged reconstructed human epidermal models, an acetone-ether-induced mouse model and an IL-4-induced cellular inflammation model were used to detect the effects of polysaccharides on the phenotype, HA, TEWL, and TEER, with further characterizations performed using QRT-PCR, Western blotting, immunofluorescence (IF) assays. RESULTS PURP contained 35.73% polysaccharides and 11.1% proteins. PURP promoted cell migration and increased skin thickness in a reconstructed human epidermis model. The TEWL significantly decreased, and the HA content significantly increased. PURP significantly increased the TEER and decreased the permeability of the SDS-damaged reconstructed human epidermis model. Claudin-3, Claudin-4, and Claudin-5 were significantly upregulated. IF and Western blot analysis revealed that the Claudin-4 level significantly increased after treatment with PURP. Claudin-1, Claudin-3, Claudin-4, and Claudin-5 gene expression and IF and immunohistochemical staining were significantly increased in mice treated with acetone-ether. PURP promoted the expression of Claudin-1, Claudin-3, Claudin-4, and Claudin-5 after treatment with 100 ng/mL IL-4. PURP also downregulated the expression of NO, IL6, TNFα and NFκB in Raw 264.7 cells and in a mouse model. CONCLUSION We hypothesize that PURP may repair the skin barrier by promoting the expression of the claudin family and can assist in skin therapy.
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Affiliation(s)
- Bo Wang
- Yunnan Botanee Biotechnology Group Co., Ltd., Yunnan, China
- Yunnan Characteristic Plant Extraction Laboratory, Yunnan Yunke Characteristic Plant Extraction Laboratory Co., Ltd., Kunming, China
| | - Feifei Wang
- Yunnan Botanee Biotechnology Group Co., Ltd., Yunnan, China
- Yunnan Characteristic Plant Extraction Laboratory, Yunnan Yunke Characteristic Plant Extraction Laboratory Co., Ltd., Kunming, China
| | - Liping Qu
- Yunnan Botanee Biotechnology Group Co., Ltd., Yunnan, China
- Yunnan Characteristic Plant Extraction Laboratory, Yunnan Yunke Characteristic Plant Extraction Laboratory Co., Ltd., Kunming, China
| | - Hongyu Ma
- Yunnan Botanee Biotechnology Group Co., Ltd., Yunnan, China
- Yunnan Characteristic Plant Extraction Laboratory, Yunnan Yunke Characteristic Plant Extraction Laboratory Co., Ltd., Kunming, China
| | - Yuying Cheng
- Yunnan Botanee Biotechnology Group Co., Ltd., Yunnan, China
- Yunnan Characteristic Plant Extraction Laboratory, Yunnan Yunke Characteristic Plant Extraction Laboratory Co., Ltd., Kunming, China
| | - Xinlang Wu
- Yunnan Botanee Biotechnology Group Co., Ltd., Yunnan, China
- Yunnan Characteristic Plant Extraction Laboratory, Yunnan Yunke Characteristic Plant Extraction Laboratory Co., Ltd., Kunming, China
| | - Junxi Liu
- Yunnan Botanee Biotechnology Group Co., Ltd., Yunnan, China
- Yunnan Characteristic Plant Extraction Laboratory, Yunnan Yunke Characteristic Plant Extraction Laboratory Co., Ltd., Kunming, China
| | - Li He
- Yunnan Characteristic Plant Extraction Laboratory, Yunnan Yunke Characteristic Plant Extraction Laboratory Co., Ltd., Kunming, China
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Kenney HM, Battaglia J, Herman K, Beck LA. Atopic dermatitis and IgE-mediated food allergy: Common biologic targets for therapy and prevention. Ann Allergy Asthma Immunol 2024:S1081-1206(24)00370-3. [PMID: 38908432 DOI: 10.1016/j.anai.2024.06.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 06/07/2024] [Accepted: 06/13/2024] [Indexed: 06/24/2024]
Abstract
OBJECTIVE To highlight common mechanistic targets for the treatment of atopic dermatitis (AD) and IgE-mediated food allergy (IgE-FA) with potential to be effective for both diseases and prevent atopic progression. DATA SOURCES Data sources were PubMed searches or National Clinical Trials (NCT)-registered clinical trials related to AD, IgE-FA, and other atopic conditions, especially focused on the pediatric population. STUDY SELECTIONS Human seminal studies and/or articles published in the past decade were emphasized with reference to preclinical models when relevant. NCT-registered clinical trials were filtered by inclusion of pediatric subjects younger than 18 years with special focus on children younger than 12 years as a critical period when AD and IgE-FA diseases may often be concurrent. RESULTS AD and IgE-FA share several pathophysiologic features, including epithelial barrier dysfunction, innate and adaptive immune abnormalities, and microbial dysbiosis, which may be critical for the clinical progression between these diseases. Revolutionary advances in targeted biologic therapies have shown the benefit of inhibiting type 2 immune responses, using dupilumab (anti-interleukin-4Rα) or omalizumab (anti-IgE), to potentially reduce symptom burden for both diseases in pediatric populations. Although the potential for biologics to promote disease remission (AD) or sustained unresponsiveness (IgE-FA) remains unclear, the refinement of biomarkers to predict infants at risk for atopic disorders provides promise for prevention through timely intervention. CONCLUSION AD and IgE-FA exhibit common features that may be leveraged to develop biologic therapeutic strategies to treat both conditions and even prevent atopic progression. Future studies should be designed with consistent age stratification in the pediatric population and standardized regimens of adjuvant oral immunotherapy or dose escalation (IgE-FA) to improve cross-study interpretation.
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Affiliation(s)
- H Mark Kenney
- Department of Medicine, University of Rochester Medical Center, Rochester, New York
| | - Jennifer Battaglia
- Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
| | - Katherine Herman
- Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; Division of Allergy and Immunology, University of Rochester Medical Center, Rochester, New York
| | - Lisa A Beck
- Department of Dermatology, University of Rochester Medical Center, Rochester, New York.
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Wong TK, Choi YG, Li PH, Chow BKC, Kumar M. MRGPRX2 antagonist GE1111 attenuated DNFB-induced atopic dermatitis in mice by reducing inflammatory cytokines and restoring skin integrity. Front Immunol 2024; 15:1406438. [PMID: 38817611 PMCID: PMC11137259 DOI: 10.3389/fimmu.2024.1406438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 04/26/2024] [Indexed: 06/01/2024] Open
Abstract
Introduction Atopic dermatitis (AD) is a chronic inflammatory skin disorder characterised by itching, erythema, and epidermal barrier dysfunction. The pathogenesis of AD is complex and multifactorial; however,mast cell (MC) activation has been reported to be one of the crucial mechanisms in the pathogenesis of AD. The MC receptor Mas related G protein-coupled receptor-X2 (MRGPRX2) has been identified as a prominent alternative receptor to the IgE receptor in causing MC activation and the subsequent release of inflammatory mediators. The current study aimed to evaluate the therapeutic effect of a novel small molecule MRGPRX2 antagonist GE1111 in AD using in vitro and in vivo approaches. Methods We developed an in vitro cell culture disease model by using LAD-2 MC, HaCaT keratinocytes and RAW 264.7 macrophage cell lines. We challenged keratinocytes and macrophage cells with CST-14 treated MC supernatant in the presence and absence of GE1111 and measured the expression of tight junction protein claudin 1, inflammatory cytokines and macrophage phagocytosis activity through immunohistochemistry, western blotting, RT-qPCR and fluorescence imaging techniques. In addition to this, we developed a DFNB-induced AD model in mice and evaluated the protective effect and underlying mechanism of GE1111. Results and Discussion Our in vitro findings demonstrated a potential therapeutic effect of GE1111, which inhibits the expression of TSLP, IL-13, MCP-1, TNF-a, and IL-1ß in MC and keratinocytes. In addition to this, GE1111 was able to preserve the expression of claudin 1 in keratinocytes and the phagocytotic activity of macrophage cells. The in vivo results demonstrated that GE1111 treatment significantly reduced phenotypic changes associated with AD (skin thickening, scaling, erythema and epidermal thickness). Furthermore, immunohistochemical analysis demonstrated that GE1111 treatment preserved the expression of the tight junction protein Involucrin and reduced the expression of the inflammatory mediator periostin in the mouse model of AD. These findings were supported by gene and protein expression analysis, where GE1111 treatment reduced the expression of TSLP, IL-13, and IL-1ß, as well as downstream signalling pathways of MRGPRX2 in AD skin lesions. In conclusion, our findings provide compelling in vitro and in vivo evidence supporting the contribution of MRGPRX2-MC interaction with keratinocytes and macrophages in the pathogenesis of AD.
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Affiliation(s)
- Trevor K. Wong
- School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Faculty of Health Sciences, McMaster University, Hamliton, ON, Canada
| | - Ye Gi Choi
- School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Philip H. Li
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Billy K. C. Chow
- School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Mukesh Kumar
- School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
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5
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Liu H. Effect of Skin Barrier on Atopic Dermatitis. Dermatitis 2024. [PMID: 38738291 DOI: 10.1089/derm.2024.0106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
The skin acts as the body's primary physical and immune barrier, maintaining the skin microbiome and providing a physical, chemical, and immune barrier. A disrupted skin barrier plays a critical role in the onset and advancement of inflammatory skin conditions such as atopic dermatitis (AD) and contact dermatitis. This narrative review outlines the relationship between AD and skin barrier function in preparation for the search for possible markers for the treatment of AD.
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Affiliation(s)
- Hanye Liu
- From the Beihua University, Jilin, China
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6
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Arnold KA, Moran MC, Shi H, van Vlijmen-Willems IMJJ, Rodijk-Olthuis D, Smits JPH, Brewer MG. CLDN1 knock out keratinocytes as a model to investigate multiple skin disorders. Exp Dermatol 2024; 33:e15084. [PMID: 38711223 DOI: 10.1111/exd.15084] [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: 02/20/2023] [Revised: 02/02/2024] [Accepted: 03/05/2024] [Indexed: 05/08/2024]
Abstract
The transmembrane protein claudin-1 is critical for formation of the epidermal barrier structure called tight junctions (TJ) and has been shown to be important in multiple disease states. These include neonatal ichthyosis and sclerosing cholangitis syndrome, atopic dermatitis and various viral infections. To develop a model to investigate the role of claudin-1 in different disease settings, we used CRISPR/Cas9 to generate human immortalized keratinocyte (KC) lines lacking claudin-1 (CLDN1 KO). We then determined whether loss of claudin-1 expression affects epidermal barrier formation/function and KC differentiation/stratification. The absence of claudin-1 resulted in significantly reduced barrier function in both monolayer and organotypic cultures. CLDN1 KO cells demonstrated decreases in gene transcripts encoding the barrier protein filaggrin and the differentiation marker cytokeratin-10. Marked morphological differences were also observed in CLDN1 KO organotypic cultures including diminished stratification and reduced formation of the stratum granulosum. We also detected increased proliferative KC in the basale layer of CLDN1 KO organotypic cultures. These results further support the role of claudin-1 in epidermal barrier and suggest an additional role of this protein in appropriate stratification of the epidermis.
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Affiliation(s)
- Kimberly A Arnold
- Department of Dermatology, University of Rochester Medical Center, Rochester, New York, USA
| | - Mary C Moran
- Department of Dermatology, University of Rochester Medical Center, Rochester, New York, USA
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA
| | - Huishan Shi
- Department of Dermatology, University of Rochester Medical Center, Rochester, New York, USA
| | - Ivonne M J J van Vlijmen-Willems
- Department of Dermatology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences (RIMLS), Nijmegen, The Netherlands
| | - Diana Rodijk-Olthuis
- Department of Dermatology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences (RIMLS), Nijmegen, The Netherlands
| | - Jos P H Smits
- Department of Dermatology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences (RIMLS), Nijmegen, The Netherlands
- Department of Dermatology, University Hospital Düsseldorf, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Matthew G Brewer
- Department of Dermatology, University of Rochester Medical Center, Rochester, New York, USA
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Hana C, Thaw Dar NN, Galo Venegas M, Vulfovich M. Claudins in Cancer: A Current and Future Therapeutic Target. Int J Mol Sci 2024; 25:4634. [PMID: 38731853 PMCID: PMC11083183 DOI: 10.3390/ijms25094634] [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: 03/05/2024] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 05/13/2024] Open
Abstract
Claudins are a family of 27 proteins that have an important role in the formation of tight junctions. They also have an important function in ion exchange, cell mobility, and the epithelial-to-mesenchymal transition, the latter being very important in cancer invasion and metastasis. Therapeutic targeting of claudins has been investigated to improve cancer outcomes. Recent evidence shows improved outcomes when combining monoclonal antibodies against claudin 18.2 with chemotherapy for patients with gastroesophageal junction cancer. Currently, chimeric antigen receptor T-cells targeting claudin 18 are under investigation. In this review, we will discuss the major functions of claudins, their distribution in the normal as well as cancerous tissues, and their effect in cancer metastasis, with a special focus on the therapeutic targeting of claudins to improve cancer outcomes.
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Affiliation(s)
- Caroline Hana
- Hematology/Oncology Department, Memorial Healthcare System, Pembroke Pines, FL 33028, USA; (N.N.T.D.); (M.G.V.)
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8
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Meng Y, Liu Y, Guo J, Guo X, Han X, Zhang L, Di T, Zhao J, Wang Y, Li P. Qing-Re-Chu-shi decoction ameliorates 2,4-dinitrochlorobenzene-induced atopic dermatitis in NC/Nga mice through anti-inflammation and immunoregulatory mechanisms. JOURNAL OF ETHNOPHARMACOLOGY 2024; 323:117702. [PMID: 38176665 DOI: 10.1016/j.jep.2024.117702] [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: 08/09/2023] [Revised: 12/22/2023] [Accepted: 01/02/2024] [Indexed: 01/06/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Qing-Re-Chu-Shi Decoction (QRCSD), a traditional Chinese herbal formula, has been employed as a complementary and alternative therapy for inflammatory skin diseases. However, its active constituents and the mechanistic basis of its action on atopic dermatitis remain in adequately understood. AIM OF THE STUDY Atopic dermatitis (AD) is an allergic dermatitis marked by eczematous lesions and pruritus. The study aimed to elucidate the underlying effects of QRCSD on AD and to identify the components responsible for its therapeutic efficacy in a mouse model. MATERIALS AND METHODS Network pharmacology and UPLC-mass analysis were used to anticipate the pharmacological mechanisms and to identify active components of QRCSD, respectively. A DNCB-induced AD-like model was established in NC/Nga mice. QRCSD or prednisolone (as a positive control) was administered via gavage every other day from day14 to day 21. Dermatitis severity score, scratching behavior, skin barrier function, spleen index, Th1/Th2 lymphocyte ratio, and serum IgE levels were evaluated. Protein arrays, including 40 inflammatory cytokines, were performed on skin lesions, followed by confirmation experiments of Western blotting in dorsal skin lesions. RESULTS The construction of a QRCSD-AD-Network and topological analysis firstly proposed potential targets of QRCSD acting on AD. Animal experiments demonstrated that oral administration of QRCSD ameliorated AD-like lesions, reduced epidermal thickness and mast cell count, decreased serum IgE levels, augmented tight junction protein (Claudin 1, Occludin) levels, and regulated the Th1/Th2 balance in the spleen, as well as spleen index. Elevated levels of interleukin (IL)-4, IL-5, IL-6, IL-17, and Eotaxin were revealed in AD-like skin lesions by protein arrays. Western blotting confirmed that the phosphorylation levels of ERK, P38, JNK, STAT3 and P65 were downregulated, and IL-6 expression was also reduced following QRCSD treatment. CONCLUSIONS The study enhances the understanding of the anti-inflammatory and immunomodulatory effects of QRCSD, showcasing its significant protective role against atopic dermatitis. Treatment with QRCSD may be considered as a viable candidate for complementary and alternative therapy in managing atopic dermatitis.
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Affiliation(s)
- YuJiao Meng
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis (BZ0375), Beijing, 100010, China; Beijing University of Chinese Medicine, Beijing, 100105, China
| | - Yu Liu
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis (BZ0375), Beijing, 100010, China; Beijing University of Chinese Medicine, Beijing, 100105, China
| | - Jianning Guo
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis (BZ0375), Beijing, 100010, China; Beijing University of Chinese Medicine, Beijing, 100105, China
| | - Xiaoyao Guo
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis (BZ0375), Beijing, 100010, China; Beijing University of Chinese Medicine, Beijing, 100105, China
| | - Xuyang Han
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis (BZ0375), Beijing, 100010, China
| | - Lu Zhang
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis (BZ0375), Beijing, 100010, China
| | - Tingting Di
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis (BZ0375), Beijing, 100010, China
| | - Jingxia Zhao
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis (BZ0375), Beijing, 100010, China
| | - Yan Wang
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis (BZ0375), Beijing, 100010, China
| | - Ping Li
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis (BZ0375), Beijing, 100010, China; Beijing University of Chinese Medicine, Beijing, 100105, China.
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Tan SH, Liu S, Teoh SH, Bonnard C, Leavesley D, Liang K. A sustainable strategy for generating highly stable human skin equivalents based on fish collagen. BIOMATERIALS ADVANCES 2024; 158:213780. [PMID: 38280287 DOI: 10.1016/j.bioadv.2024.213780] [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: 07/13/2023] [Revised: 12/20/2023] [Accepted: 01/17/2024] [Indexed: 01/29/2024]
Abstract
Tissue engineered skin equivalents are increasingly recognized as potential alternatives to traditional skin models such as human ex vivo skin or animal skin models. However, most of the currently investigated human skin equivalents (HSEs) are constructed using mammalian collagen which can be expensive and difficult to extract. Fish skin is a waste product produced by fish processing industries and identified as a cost-efficient and sustainable source of type I collagen. In this work, we describe a method for generating highly stable HSEs based on fibrin fortified tilapia fish collagen. The fortified fish collagen (FFC) formulation is optimized to enable reproducible fabrication of full-thickness HSEs that undergo limited contraction, facilitating the incorporation of human donor-derived skin cells and formation of biomimetic dermal and epidermal layers. The morphology and barrier function of the FFC HSEs are compared with a commercial skin model and validated with immunohistochemical staining and transepithelial electrical resistance testing. Finally, the potential of a high throughput screening platform with FFC HSE is explored by scaling down its fabrication to 96-well format.
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Affiliation(s)
- Shi Hua Tan
- A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Shaoqiong Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
| | - Swee Hin Teoh
- College of Materials Science and Engineering, Hunan University, People's Republic of China
| | - Carine Bonnard
- A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR), Singapore; Skin Research Institute of Singapore (SRIS), Singapore
| | | | - Kun Liang
- A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR), Singapore; Skin Research Institute of Singapore (SRIS), Singapore.
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10
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Dong S, Li D, Shi D. Skin barrier-inflammatory pathway is a driver of the psoriasis-atopic dermatitis transition. Front Med (Lausanne) 2024; 11:1335551. [PMID: 38606161 PMCID: PMC11007107 DOI: 10.3389/fmed.2024.1335551] [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: 11/09/2023] [Accepted: 03/13/2024] [Indexed: 04/13/2024] Open
Abstract
As chronic inflammatory conditions driven by immune dysregulation are influenced by genetics and environment factors, psoriasis and atopic dermatitis (AD) have traditionally been considered to be distinct diseases characterized by different T cell responses. Psoriasis, associated with type 17 helper T (Th17)-mediated inflammation, presents as well-defined scaly plaques with minimal pruritus. AD, primarily linked to Th2-mediated inflammation, presents with poorly defined erythema, dry skin, and intense itching. However, psoriasis and AD may overlap or transition into one another spontaneously, independent of biological agent usage. Emerging evidence suggests that defects in skin barrier-related molecules interact with the polarization of T cells, which forms a skin barrier-inflammatory loop with them. This loop contributes to the chronicity of the primary disease or the transition between psoriasis and AD. This review aimed to elucidate the mechanisms underlying skin barrier defects in driving the overlap between psoriasis and AD. In this review, the importance of repairing the skin barrier was underscored, and the significance of tailoring biologic treatments based on individual immune status instead of solely adhering to the treatment guidelines for AD or psoriasis was emphasized.
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Affiliation(s)
- Sitan Dong
- College of Clinical Medicine, Jining Medical University, Jining, China
| | - Dongmei Li
- Department of Microbiology and Immunology, Georgetown University Medical Center, Washington, DC, United States
| | - Dongmei Shi
- Department of Dermatology/Laboratory of Medical Mycology, Jining No.1 People’s Hospital, Jining, China
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Cabalín C, Dibarrart M, Núñez-Rosales JJ, Faunes M, Avaca M, Ávalos P, Fabres J, Álvarez-Figueroa MJ, Vera-Kellet C, Silva-Valenzuela S, Sáez CG, Borzutzky A. Vernix caseosa reveals mechanistic clues linking maternal obesity to atopic dermatitis pathogenesis. J Allergy Clin Immunol 2024; 153:860-867.e1. [PMID: 38048884 DOI: 10.1016/j.jaci.2023.09.042] [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: 03/13/2023] [Revised: 08/22/2023] [Accepted: 09/28/2023] [Indexed: 12/06/2023]
Abstract
BACKGROUND Maternal overweight and obesity have been associated with an increased risk of atopic dermatitis (AD) in the offspring, but the underlying mechanisms are unclear. Vernix caseosa (VC) is a proteolipid material covering the fetus produced during skin development. However, whether maternal prepregnancy weight excess influences fetal skin development is unknown. Characterizing the VC of newborns from mothers with prepregnancy overweight and obesity might reveal AD-prone alterations during fetal skin development. OBJECTIVE We sought to explore AD biomarkers and staphylococcal loads in VC from the offspring of mothers who were overweight/obese (O/O) before pregnancy versus in those from offspring of normal weight mothers. METHODS The VC of newborns of 14 O/O and 12 normal weight mothers were collected immediately after birth. Biomarkers were determined by ELISA and staphylococcal species by quantitative PCR. RESULTS The VC from the O/O group showed decreased expression of skin barrier proteins (filaggrin and loricrin) and increased levels of proinflammatory biomarkers (IgA, thymic stromal lymphopoietin [TSLP], S100A8, IL-25, and IL-33). No differences in concentrations of antimicrobial peptides and enzymes were detected. The VC from the O/O group had a lower Staphylococcus epidermidis and Staphylococcus hominis commensal bacterial load, whereas Staphylococcus aureus bacterial load was not significantly different between the 2 groups. Maternal body mass index was negatively correlated with VC filaggrin expression and S epidermidis load and was positively associated with TSLP concentration. One-year follow-up established that the offspring of O/O mothers had a higher incidence of AD that was specifically linked with decreased VC filaggrin expression and lower S epidermidis load. CONCLUSIONS VC from neonates of mothers with prepregnancy overweight and obesity exhibit skin barrier molecular alterations and staphylococcal dysbiosis that suggest early mechanistic clues to this population's increased risk of AD.
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Affiliation(s)
- Carolina Cabalín
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Marisol Dibarrart
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan José Núñez-Rosales
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Miriam Faunes
- Department of Neonatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mónica Avaca
- Department of Neonatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Patricia Ávalos
- Department of Neonatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jorge Fabres
- Department of Neonatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Cristian Vera-Kellet
- Department of Dermatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Sergio Silva-Valenzuela
- Department of Dermatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Claudia G Sáez
- Department of Hematology and Oncology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Arturo Borzutzky
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.
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12
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Ahn HJ, Shin MK. Zinc penetration through the skin barrier in atopic dermatitis and rosacea using reflectance confocal microscopy. Exp Dermatol 2024; 33:e14971. [PMID: 37909707 DOI: 10.1111/exd.14971] [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: 05/08/2023] [Revised: 09/27/2023] [Accepted: 10/24/2023] [Indexed: 11/03/2023]
Abstract
Atopic dermatitis (AD) is a chronic, recurrent eczematous disorder with a complex pathophysiology caused by skin barrier abnormalities. Rosacea is a common chronic immune-mediated inflammatory disorder that results in diminished skin barrier function. Reflectance confocal microscopy (RCM) is a non-invasive method for visualizing the dynamic status of epidermal and upper dermal structures. In this study, we compared skin barrier permeability among normal, AD and rosacea groups. To assess skin barrier permeability, zinc was applied to lesional skin and the RCM reflectance intensity of zinc penetration was measured. Reflectance confocal microscopy revealed that the intensity in patients with rosacea and AD was higher than that in the normal group at depths of 8-24 μm in both the face and forearm, which were considered as the stratum corneum (SC) and tight junction (TJ) level (p < 0.0001). When comparing AD and rosacea, the intensity of rosacea was higher than that of AD at a depth of 8 μm in the face (p < 0.0001). The intensity of AD was higher than that of rosacea at a depth of 24 μm (p = 0.009). This suggests that skin barrier permeability is increased in the upper epidermis of patients with AD and rosacea. On the face, patients with rosacea had more SC weakness than did those with AD, whereas patients with AD had more TJ weakness than those with rosacea.
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Affiliation(s)
- Hye-Jin Ahn
- Department of Dermatology, Kyung Hee University College of Medicine, Kyung Hee University Hospital, Seoul, South Korea
| | - Min Kyung Shin
- Department of Dermatology, Kyung Hee University College of Medicine, Kyung Hee University Hospital, Seoul, South Korea
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13
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Wang R, Yan S, Ma X, Zhao J, Han Y, Pan Y, Zhao H. The pivotal role of Bifida Ferment Lysate on reinforcing the skin barrier function and maintaining homeostasis of skin defenses in vitro. J Cosmet Dermatol 2023; 22:3427-3435. [PMID: 37218728 DOI: 10.1111/jocd.15831] [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: 02/22/2023] [Revised: 05/04/2023] [Accepted: 05/11/2023] [Indexed: 05/24/2023]
Abstract
BACKGROUND The semiactive or inactive probiotics or their extracts used in dermatology have interesting properties to ameliorate signs of irritated skin and enhance the skin barrier. Bifidobacterium, as the most common probiotics, which has been found to be effective in reducing acne and improving the skin barrier function of atopic dermatitis. Bifida Ferment Lysate (BFL) can be obtained from Bifidobacterium by fermentation and extraction. PURPOSE In this study, we investigated the effect of a topically used BFL on the skin using in vitro evaluation methods. RESULTS The results showed that upregulation of skin physical barrier gene (FLG, LOR, IVL, TGM1, and AQP3) and antimicrobial peptide gene (CAMP and hBD-2) in HaCaT cells by BFL might be responsible for skin barrier resistance. In addition, BFL had strong antioxidant properties representing a dose-dependent increasing of the scavenging capacity of DPPH, ABTS, hydroxyl, and superoxide radicals. BFL treatment also fundamentally inhibited the intracellular ROS and MDA production and improved the activities of antioxidant enzymes (CAT and GSH-Px) in H2 O2 -stimulated HaCaT cells. As a good immunomodulatory factor, BFL efficiently decreased the secretion of IL-8 and TNF-α cytokines, and COX-2 mRNA expression in LPS-induced THP-1 macrophages. CONCLUSION BFL can strengthen the skin barrier function and stimulate skin barrier resistance, to reinforce the skin against oxidative stress and inflammatory stimuli.
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Affiliation(s)
- Rui Wang
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
- Beijing Key Laboratory of Plant Research and Development, Beijing, China
| | - Shiyu Yan
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
- Beijing Key Laboratory of Plant Research and Development, Beijing, China
| | - Xue Ma
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
- Beijing Key Laboratory of Plant Research and Development, Beijing, China
| | - Jinfeng Zhao
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
- Beijing Key Laboratory of Plant Research and Development, Beijing, China
| | - Yuqing Han
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
- Beijing Key Laboratory of Plant Research and Development, Beijing, China
| | - Yao Pan
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
- Beijing Key Laboratory of Plant Research and Development, Beijing, China
| | - Hua Zhao
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
- Beijing Key Laboratory of Plant Research and Development, Beijing, China
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14
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Kok JML, Dowd GC, Cabral JD, Wise LM. Macrocystis pyrifera Lipids Reduce Cytokine-Induced Pro-Inflammatory Signalling and Barrier Dysfunction in Human Keratinocyte Models. Int J Mol Sci 2023; 24:16383. [PMID: 38003573 PMCID: PMC10671590 DOI: 10.3390/ijms242216383] [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: 09/27/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 11/26/2023] Open
Abstract
Atopic dermatitis is a chronic condition where epidermal barrier dysfunction and cytokine production by infiltrating immune cells exacerbate skin inflammation and damage. A total lipid extract from Macrocystis pyrifera, a brown seaweed, was previously reported to suppress inflammatory responses in monocytes. Here, treatment of human HaCaT keratinocytes with M. pyrifera lipids inhibited tumour necrosis factor (TNF)-α induced TNF receptor-associated factor 2 and monocyte chemoattractant protein (MCP)-1 protein production. HaCaT cells stimulated with TNF-α, interleukin (IL)-4, and IL-13 showed loss of claudin-1 tight junctions, but little improvement was observed following lipid pre-treatment. Three-dimensional cultures of HaCaT cells differentiated at the air-liquid interface showed increased MCP-1 production, loss of claudin-1 tight junctions, and trans-epidermal leakage with TNF-α, IL-4, and IL-13 stimulation, with all parameters reduced by lipid pre-treatment. These findings suggest that M. pyrifera lipids have anti-inflammatory and barrier-protective effects on keratinocytes, which may be beneficial for the treatment of atopic dermatitis or other skin conditions.
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Affiliation(s)
- Jamie M. L. Kok
- Department of Pharmacology and Toxicology, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand;
| | - Georgina C. Dowd
- The New Zealand Institute for Plant and Food Research Limited, Nelson 7043, New Zealand;
| | - Jaydee D. Cabral
- Department of Microbiology and Immunology, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand;
| | - Lyn M. Wise
- Department of Pharmacology and Toxicology, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand;
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15
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Focken J, Scheurer J, Jäger A, Schürch CM, Kämereit S, Riel S, Schaller M, Weigelin B, Schittek B. Neutrophil extracellular traps enhance S. aureus skin colonization by oxidative stress induction and downregulation of epidermal barrier genes. Cell Rep 2023; 42:113148. [PMID: 37733587 DOI: 10.1016/j.celrep.2023.113148] [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: 04/17/2023] [Revised: 06/28/2023] [Accepted: 08/31/2023] [Indexed: 09/23/2023] Open
Abstract
Staphylococcus aureus is the most common cause of bacterial skin infections in humans, including patients with atopic dermatitis (AD). Polymorphonuclear neutrophils (PMNs) are the first cells to infiltrate an infection site, where they usually provide an effective first line of defense, including neutrophil extracellular trap (NET) formation. Here, we show that infiltrating PMNs in inflamed human and mouse skin enhance S. aureus skin colonization and persistence. Mechanistically, we demonstrate that a crosstalk between keratinocytes and PMNs results in enhanced NET formation upon S. aureus infection, which in turn induces oxidative stress and expression of danger-associated molecular patterns such as high-mobility-group-protein B1 (HMGB1) in keratinocytes. In turn, HMGB1 enhances S. aureus skin colonization and persistence by promoting skin barrier dysfunctions by the downregulation of epidermal barrier genes. Using patient material, we show that patients with AD exhibit enhanced presence of PMNs, NETs, and HMGB1 in the skin, demonstrating the clinical relevance of our finding.
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Affiliation(s)
- Jule Focken
- Department of Dermatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Jasmin Scheurer
- Department of Dermatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Annika Jäger
- Department of Pathology and Neuropathology, University Hospital and Comprehensive Cancer Center Tübingen, Tübingen, Germany
| | - Christian M Schürch
- Department of Pathology and Neuropathology, University Hospital and Comprehensive Cancer Center Tübingen, Tübingen, Germany
| | - Sofie Kämereit
- Department of Dermatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Simon Riel
- Electron-Microscopy, Department of Dermatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Martin Schaller
- Electron-Microscopy, Department of Dermatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Bettina Weigelin
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University Tuebingen, Tuebingen, Germany
| | - Birgit Schittek
- Department of Dermatology, University Hospital Tuebingen, Tuebingen, Germany.
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16
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Mao A, Zhao W, Zhu Y, Kong F, Chen D, Si H, Xu C. Gut Bacterial Community Determines the Therapeutic Effect of Ginsenoside on Canine Inflammatory Bowel Disease by Modulating the Colonic Mucosal Barrier. Microorganisms 2023; 11:2616. [PMID: 38004628 PMCID: PMC10672857 DOI: 10.3390/microorganisms11112616] [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: 09/28/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 11/26/2023] Open
Abstract
Inflammatory bowel disease (IBD) comprises systemic inflammatory conditions primarily affecting the gastrointestinal tract, including Crohn's disease and ulcerative colitis. This research aims to analyze the clinical symptoms and pathogenesis of a Dextran sodium sulfate (DSS)-induced canine IBD model and evaluate the restorative effect of ginsenoside from a pathogenesis perspective. We established the DSS-induced canine IBD model and studied the pathological mechanisms. Additionally, we examined the therapeutic effect of ginsenosides by assessing the Canine Inflammatory Bowel Disease Activity Index (CIBDAI), C-reactive protein (CRP) levels, colonic tissue morphology, protein expression, and mucosal bacterial community analysis. Our findings revealed a total ginsenoside content of 22.7% in the ginsenoside extract. Animal experiments demonstrated that dogs with IBD exhibited decreased mental state, significantly increased CIBDAI and CRP levels, disrupted colonic epithelial tissue structure, decreased expression of mucin, tight junctions, and adherens junctions, as well as reduced diversity of the colonic mucosal bacterial community. Furthermore, correlation analysis highlighted a total of 38 bacterial strains correlated with physiological indices. Significantly, ginsenoside treatment could improve these symptoms and reverse the relative abundance of some bacterial communities. In conclusion, alterations in the properties of the colonic mucus layer or the reduction in MUC2, its core component, in dogs with IBD can lead to bacterial penetration of the mucus layer and subsequent contact with intestinal epithelial cells, resulting in inflammation. Remarkably, ginsenoside intervention showcased the capacity to positively influence the relative abundance of bacteria and impact the colonic mucus layer properties, thereby offering promising prospects for IBD management and recovery.
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Affiliation(s)
- Aipeng Mao
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Research Center for Microbial Feed Engineering of Special Animals in Jilin Province, Innovation Center for Feeding and Utilization of Special Animals in Jilin Province, Changchun 130112, China; (A.M.); (W.Z.); (F.K.); (D.C.)
| | - Weigang Zhao
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Research Center for Microbial Feed Engineering of Special Animals in Jilin Province, Innovation Center for Feeding and Utilization of Special Animals in Jilin Province, Changchun 130112, China; (A.M.); (W.Z.); (F.K.); (D.C.)
| | - Yuhang Zhu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China;
| | - Fantao Kong
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Research Center for Microbial Feed Engineering of Special Animals in Jilin Province, Innovation Center for Feeding and Utilization of Special Animals in Jilin Province, Changchun 130112, China; (A.M.); (W.Z.); (F.K.); (D.C.)
| | - Danyang Chen
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Research Center for Microbial Feed Engineering of Special Animals in Jilin Province, Innovation Center for Feeding and Utilization of Special Animals in Jilin Province, Changchun 130112, China; (A.M.); (W.Z.); (F.K.); (D.C.)
| | - Huazhe Si
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China;
| | - Chao Xu
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Research Center for Microbial Feed Engineering of Special Animals in Jilin Province, Innovation Center for Feeding and Utilization of Special Animals in Jilin Province, Changchun 130112, China; (A.M.); (W.Z.); (F.K.); (D.C.)
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17
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Mohanty S, Lindelauf C, White JK, Scheffschick A, Ehrenborg E, Demirel I, Brauner H, Brauner A. Inhibition of COX-2 signaling favors E. coli during urinary tract infection. J Inflamm (Lond) 2023; 20:30. [PMID: 37697284 PMCID: PMC10496388 DOI: 10.1186/s12950-023-00356-9] [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: 12/22/2022] [Accepted: 08/21/2023] [Indexed: 09/13/2023] Open
Abstract
BACKGROUND To avoid the overuse of antibiotics, non-steroidal anti-inflammatory drugs (NSAIDs), acting via cyclooxygenase (COX) inhibition, have been used to reduce pain and as an alternative treatment for uncomplicated urinary tract infections (UTIs). However, clinical studies evaluating NSAIDs versus antibiotics have reported an increased risk of acute pyelonephritis. Therefore, we hypothesized that COX inhibition could compromise the innate immune response and contribute to complications in patients with uncomplicated UTI. RESULTS We here demonstrate that in particular COX-2 inhibition led to decreased expression of the antimicrobial peptides psoriasin and human β-defensin-2 in human uroepithelial cells. Psoriasin expression was altered in neutrophils and macrophages. COX-2 inhibition also had impact on the inflammasome mediated IL-1β expression in response to uroepithelial E. coli infection. Further, COX-2 inhibition downregulated free radicals and the epithelial barrier protein claudin 1, favoring infectivity. In addition, conditioned media from COX-2 inhibited uroepithelial cells infected with E. coli failed to activate macrophages. CONCLUSIONS Taken together, our data suggests an adverse innate immune effect of COX-2 inhibition on uroepithelial cells during UTI.
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Affiliation(s)
- Soumitra Mohanty
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
- Division of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
| | - Ciska Lindelauf
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
- Division of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
| | - John Kerr White
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
- Division of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
| | - Andrea Scheffschick
- Department of Medicine, Solna, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Solna, Sweden
| | - Ewa Ehrenborg
- Cardiovascular Medicine Unit, Department of Medicine, Center for Molecular Medicine at BioClinicum, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Isak Demirel
- iRiSC - Inflammatory Response and Infection Susceptibility Centre, Faculty of Medicine and Health, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Hanna Brauner
- Department of Medicine, Solna, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Solna, Sweden
- Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Annelie Brauner
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden.
- Division of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden.
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18
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Zheng X, Ren B, Gao Y. Tight junction proteins related to blood-brain barrier and their regulatory signaling pathways in ischemic stroke. Biomed Pharmacother 2023; 165:115272. [PMID: 37544283 DOI: 10.1016/j.biopha.2023.115272] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/29/2023] [Accepted: 07/31/2023] [Indexed: 08/08/2023] Open
Abstract
Tight junctions (TJs) are crucial for intercellular connections. The abnormal expression of proteins related to TJs can result in TJ destruction, structural damage, and endothelial and epithelial cell dysfunction. These factors are associated with the occurrence and progression of several diseases. Studies have shown that blood-brain barrier (BBB) damage and dysfunction are the prominent pathological features of stroke. TJs are directly associated with the BBB integrity. In this article, we first discuss the structure and function of BBB TJ-related proteins before focusing on the crucial events that cause TJ dysfunction and BBB damage, as well as the regulatory mechanisms that affect the qualitative and quantitative expression of TJ proteins during ischemic stroke. Multiple regulatory mechanisms, including phosphorylation, matrix metalloproteinases (MMPs), and microRNAs, regulate TJ-related proteins and affect BBB permeability. Some signaling pathways and mechanisms have been demonstrated to have dual functions. Hopefully, our understanding of the regulation of BBB TJs in ischemic stroke will be applied to the development of targeted medications and therapeutic therapies.
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Affiliation(s)
- Xiangyi Zheng
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Beida Ren
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China; Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China.
| | - Ying Gao
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China; Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China.
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19
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Locke A, Hung L, Upton JEM, O'Mahony L, Hoang J, Eiwegger T. An update on recent developments and highlights in food allergy. Allergy 2023; 78:2344-2360. [PMID: 37087637 DOI: 10.1111/all.15749] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/06/2023] [Accepted: 04/19/2023] [Indexed: 04/24/2023]
Abstract
While both the incidence and general awareness of food allergies is increasing, the variety and clinical availability of therapeutics remain limited. Therefore, investigations into the potential factors contributing to the development of food allergy (FA) and the mechanisms of natural tolerance or induced desensitization are required. In addition, a detailed understanding of the pathophysiology of food allergies is needed to generate compelling, enduring, and safe treatment options. New findings regarding the contribution of barrier function, the effect of emollient interventions, mechanisms of allergen recognition, and the contributions of specific immune cell subsets through rodent models and human clinical studies provide novel insights. With the first approved treatment for peanut allergy, the clinical management of FA is evolving toward less intensive, alternative approaches involving fixed doses, lower maintenance dose targets, coadministration of biologicals, adjuvants, and tolerance-inducing formulations. The ultimate goal is to improve immunotherapy and develop precision-based medicine via risk phenotyping allowing optimal treatment for each food-allergic patient.
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Affiliation(s)
- Arielle Locke
- School of Medicine, University of Galway, Galway, Ireland
| | - Lisa Hung
- Translational Medicine Program, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Immunology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Julia E M Upton
- Division of Immunology and Allergy, SickKids Food Allergy and Anaphylaxis Program, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Paediatrics, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Liam O'Mahony
- Departments of Medicine and Microbiology, APC Microbiome Ireland, National University of Ireland, Cork, Ireland
| | - Jennifer Hoang
- Translational Medicine Program, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Thomas Eiwegger
- Translational Medicine Program, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Immunology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Karl Landsteiner University of Health Sciences, Krems an der Donau, Austria
- Department of Pediatric and Adolescent Medicine, University Hospital St. Pölten, St. Pölten, Austria
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20
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De La Cruz NC, Möckel M, Niehues H, Rübsam M, Malter W, Zinser M, Krummenacher C, Knebel-Mörsdorf D. Ex Vivo Infection of Human Skin Models with Herpes Simplex Virus 1: Accessibility of the Receptor Nectin-1 during Formation or Impairment of Epidermal Barriers Is Restricted by Tight Junctions. J Virol 2023; 97:e0026223. [PMID: 37289055 PMCID: PMC10308952 DOI: 10.1128/jvi.00262-23] [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: 02/17/2023] [Accepted: 05/18/2023] [Indexed: 06/09/2023] Open
Abstract
Herpes simplex virus 1 (HSV-1) must overcome epidermal barriers to reach its receptors on keratinocytes and initiate infection in human skin. The cell-adhesion molecule nectin-1, which is expressed in human epidermis, acts as an efficient receptor for HSV-1 but is not within reach of the virus upon exposure of human skin under nonpathological conditions. Atopic dermatitis skin, however, can provide an entry portal for HSV-1 emphasizing the role of impaired barrier functions. Here, we explored how epidermal barriers impact HSV-1 invasion in human epidermis and influence the accessibility of nectin-1 for the virus. Using human epidermal equivalents, we observed a correlation of the number of infected cells with tight-junction formation, suggesting that mature tight junctions prior to formation of the stratum corneum prevent viral access to nectin-1. Consequently, impaired epidermal barriers driven by Th2-inflammatory cytokines interleukin 4 (IL-4) and IL-13 as well as the genetic predisposition of nonlesional atopic dermatitis keratinocytes correlated with enhanced infection supporting the impact of functional tight junctions for preventing infection in human epidermis. Comparable to E-cadherin, nectin-1 was distributed throughout the epidermal layers and localized just underneath the tight-junctions. While nectin-1 was evenly distributed on primary human keratinocytes in culture, the receptor was enriched at lateral surfaces of basal and suprabasal cells during differentiation. Nectin-1 showed no major redistribution in the thickened atopic dermatitis and IL-4/IL-13-treated human epidermis in which HSV-1 can invade. However, nectin-1 localization toward tight junction components changed, suggesting that defective tight-junction barriers make nectin-1 accessible for HSV-1 which enables facilitated viral penetration. IMPORTANCE Herpes simplex virus 1 (HSV-1) is a widely distributed human pathogen which productively infects epithelia. The open question is which barriers of the highly protected epithelia must the virus overcome to reach its receptor nectin-1. Here, we used human epidermal equivalents to understand how physical barrier formation and nectin-1 distribution contribute to successful viral invasion. Inflammation-induced barrier defects led to facilitated viral penetration strengthening the role of functional tight-junctions in hindering viral access to nectin-1 that is localized just underneath tight junctions and distributed throughout all layers. We also found nectin-1 ubiquitously localized in the epidermis of atopic dermatitis and IL-4/IL-13-treated human skin implying that impaired tight-junctions in combination with a defective cornified layer allow the accessibility of nectin-1 to HSV-1. Our results support that successful invasion of HSV-1 in human skin relies on defective epidermal barriers, which not only include a dysfunctional cornified layer but also depend on impaired tight junctions.
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Affiliation(s)
- Nydia C. De La Cruz
- Center for Biochemistry, University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Maureen Möckel
- Center for Biochemistry, University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Hanna Niehues
- Department of Dermatology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands
| | - Matthias Rübsam
- Department Cell Biology of the Skin, University Hospital Cologne, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Response in Aging-associated Diseases, University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Wolfram Malter
- Department of Gynecology and Obstetrics, University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Max Zinser
- Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Claude Krummenacher
- Department of Biological and Biomedical Sciences, Rowan University, Glassboro, New Jersey, USA
| | - Dagmar Knebel-Mörsdorf
- Center for Biochemistry, University Hospital Cologne, University of Cologne, Cologne, Germany
- Department of Pediatrics, University Hospital Cologne, University of Cologne, Cologne, Germany
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21
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Nemoto S, Kubota T, Ohno H. Exploring body weight-influencing gut microbiota by elucidating the association with diet and host gene expression. Sci Rep 2023; 13:5593. [PMID: 37019989 PMCID: PMC10076326 DOI: 10.1038/s41598-023-32411-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 03/27/2023] [Indexed: 04/07/2023] Open
Abstract
We aimed to identify gut microbiota that influences body weight by elucidating the association with diets and host genes. Germ-free (GF) mice with and without fecal microbiota transplant (FMT) were fed a normal, high-carbohydrate, or high-fat diet. FMT mice exhibited greater total body weight; adipose tissue and liver weights; blood glucose, insulin, and total cholesterol levels; and oil droplet size than the GF mice, regardless of diet. However, the extent of weight gain and metabolic parameter levels associated with gut microbiota depended on the nutrients ingested. For example, a disaccharide- or polysaccharide-rich diet caused more weight gain than a monosaccharide-rich diet. An unsaturated fatty acid-rich diet had a greater microbial insulin-increasing effect than a saturated fatty acid-rich diet. Perhaps the difference in microbial metabolites produced from substances taken up by the host created metabolic differences. Therefore, we analyzed such dietary influences on gut microbiota, differentially expressed genes between GF and FMT mice, and metabolic factors, including body weight. The results revealed a correlation between increased weight gain, a fat-rich diet, increased Ruminococcaceae abundance, and decreased claudin 22 gene expression. These findings suggest that weight regulation might be possible through the manipulation of the gut microbiota metabolism using the host's diet.
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Affiliation(s)
- Shino Nemoto
- Laboratory for Intestinal Ecosystem, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan.
| | - Tetsuya Kubota
- Laboratory for Intestinal Ecosystem, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
- Division of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Tokyo, Japan
- Department of Clinical Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan
- Division of Cardiovascular Medicine, Toho University Ohashi Medical Center, Tokyo, Japan
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Ohno
- Laboratory for Intestinal Ecosystem, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
- Laboratory for Immune Regulation, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan
- Immunobiology Laboratory, Graduate School of Medical Life Science, Yokohama City University, Kanagawa, Japan
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22
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Perälä M, Kaustio M, Salava A, Jakkula E, Pelkonen AS, Saarela J, Remitz A, Mäkelä MJ. RELEVANCE OF CODING VARIATION IN FILAGGRIN AND DOCK8 IN FINNISH PEDIATRIC PATIENTS WITH EARLY-ONSET MODERATE-TO-SEVERE ATOPIC DERMATITIS. JID INNOVATIONS 2023. [PMID: 37533579 PMCID: PMC10392095 DOI: 10.1016/j.xjidi.2023.100203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
Early-onset, persistent atopic dermatitis (AD) is proposed as a distinct subgroup that may have specific genotypic features. FLG gene loss-of-function variants are the best known genetic factors contributing to epidermal barrier impairment and eczema severity. In a cohort of 140 Finnish children with early-onset moderate-to-severe AD, we investigated the effect of coding variation in FLG and 13 other genes with epidermal barrier or immune function through the use of targeted amplicon sequencing and genotyping. A FLG loss-of-function variant (Arg501Ter, Ser761fs, Arg2447Ter, or Ser3247Ter) was identified in 20 of 140 patients showing higher transepidermal water loss values than patients without these variants. Total FLG loss-of-function variant frequency (7.14%) was significantly higher than in the general Finnish population (2.34%). When tested separately, only Arg2447Ter showed a significant association with AD (P = 0.003104). In addition, a modest association with moderate-to-severe pediatric AD was seen for rs12730241 and rs6587667 (FLG2:Gly137Glu). Loss-of-function variants, previously reported pathogenic variants, or statistically significant enrichment of nonsynonymous coding region variants were not found in the 13 candidate genes studied by amplicon sequencing. However, higher IgE and eosinophil counts were found in carriers of potentially pathogenic DOCK8 missense variants, suggesting that the role of DOCK8 variation in AD should be further investigated in larger cohorts.
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23
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Suzuki K, Yamaga K, Tokumasu R, Katsuno T, Tanaka H, Chiba S, Yagi T, Katayama I, Tamura A, Murota H, Tsukita S. Double mutation of claudin‐1 and claudin‐3 causes alopecia in infant mice. Ann N Y Acad Sci 2023; 1523:51-61. [PMID: 37002535 DOI: 10.1111/nyas.14980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
Hair follicles (HFs) undergo cyclic phases of growth, regression, and rest in association with hair shafts to maintain the hair coat. Nonsense mutations in the tight junction protein claudin (CLDN)-1 cause hair loss in humans. Therefore, we evaluated the roles of CLDNs in hair retention. Among the 27 CLDN family members, CLDN1, CLDN3, CLDN4, CLDN6, and CLDN7 were expressed in the inner bulge layer, isthmus, and sebaceous gland of murine HFs. Hair phenotypes were observed in Cldn1 weaker knockdown and Cldn3-knockout (Cldn1Δ/Δ Cldn3-/- ) mice. Although hair growth was normal, Cldn1Δ/Δ Cldn3-/- mice showed striking hair loss in the first telogen. Simultaneous deficiencies in CLDN1 and CLDN3 caused abnormalities in telogen HFs, such as an aberrantly layered architecture of epithelial cell sheets in bulges with multiple cell layers, mislocalization of bulges adjacent to sebaceous glands, and dilated hair canals. Along with the telogen HF abnormalities, which shortened the hair retention period, there was an enhanced proliferation of the epithelium surrounding HFs in Cldn1Δ/Δ Cldn3-/- mice, causing accelerated hair regrowth in adults. Our findings suggested that CLDN1 and CLDN3 may regulate hair retention in infant mice by maintaining the appropriate layered architecture of HFs, a deficiency of which can lead to alopecia.
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Affiliation(s)
- Koya Suzuki
- Advanced Comprehensive Research Organization Teikyo University Tokyo Japan
- Department of Clinical Laboratory of Medicine, Graduate School of Medicine Juntendo University Tokyo Japan
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences Osaka University Osaka Japan
| | - Kosuke Yamaga
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences Osaka University Osaka Japan
- Department of Dermatology, Graduate School of Medicine Osaka University Osaka Japan
| | - Reitaro Tokumasu
- Advanced Comprehensive Research Organization Teikyo University Tokyo Japan
| | - Tatsuya Katsuno
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences Osaka University Osaka Japan
- Center for Anatomical, Pathological and Forensic Medical Researches Kyoto University Graduate School of Medicine Kyoto Japan
- KOKORO‐Biology Group, Graduate School of Frontier Biosciences Osaka University Osaka Japan
| | - Hiroo Tanaka
- Advanced Comprehensive Research Organization Teikyo University Tokyo Japan
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences Osaka University Osaka Japan
- Department of Pharmacology Teikyo University School of Medicine Tokyo Japan
| | - Shuhei Chiba
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences Osaka University Osaka Japan
- Laboratory of Molecular and Cellular Biology, Department of Biomolecular Sciences, Graduate School of Life Sciences Tohoku University Sendai Japan
| | - Takeshi Yagi
- KOKORO‐Biology Group, Graduate School of Frontier Biosciences Osaka University Osaka Japan
| | - Ichiro Katayama
- Department of Dermatology, Graduate School of Medicine Osaka University Osaka Japan
- Department of Pigmentation Research and Therapeutics, Graduate School of Medicine Osaka Metropolitan University Osaka Japan
| | - Atsushi Tamura
- Advanced Comprehensive Research Organization Teikyo University Tokyo Japan
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences Osaka University Osaka Japan
- Department of Pharmacology Teikyo University School of Medicine Tokyo Japan
| | - Hiroyuki Murota
- Department of Dermatology, Graduate School of Medicine Osaka University Osaka Japan
- Department of Dermatology Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Sachiko Tsukita
- Advanced Comprehensive Research Organization Teikyo University Tokyo Japan
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences Osaka University Osaka Japan
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24
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Koda A, Ishii Y, Kashiwagi A, Fujikawa M, Kikuchi K, Hashimoto R, Ueda Y, Doi T. The Effects of Mucopolysaccharide Polysulfate on Steroid-Induced Tight Junction Barrier Dysfunction in Human Epidermal Keratinocytes and a 3D Skin Model. Skin Pharmacol Physiol 2023; 36:186-194. [PMID: 36966539 PMCID: PMC10652656 DOI: 10.1159/000529962] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 02/24/2023] [Indexed: 11/15/2023]
Abstract
INTRODUCTION The long-term use of topical corticosteroids (TCS) is associated with side effects such as skin atrophy and barrier deterioration. Moisturizers, such as mucopolysaccharide polysulfate (MPS), have been reported to prevent relapses in atopic dermatitis (AD) when used in combination with TCS. However, the mechanisms underlying the positive effects of MPS in combination with TCS in AD are poorly understood. In the present study, we investigated the effects of MPS in combination with clobetasol 17-propionate (CP) on tight junction (TJ) barrier function in human epidermal keratinocytes (HEKa) and 3D skin models. METHODS The expression of claudin-1, which is crucial for TJ barrier function in keratinocytes, and transepithelial electrical resistance (TEER) was measured in CP-treated human keratinocytes incubated with and without MPS. A TJ permeability assay, using Sulfo-NHS-Biotin as a tracer, was also conducted in a 3D skin model. RESULTS CP reduced claudin-1 expression and TEER in human keratinocytes, whereas MPS inhibited these CP-induced effects. Moreover, MPS inhibited the increase in CP-induced TJ permeability in a 3D skin model. CONCLUSION The present study demonstrated that MPS improved TJ barrier impairment induced by CP. The improvement of TJ barrier function may partially be responsible for the delayed relapse of AD induced by the combination of MPS and TCS.
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Affiliation(s)
- Akira Koda
- Drug Development Laboratories, Kyoto R&D Center, Drug Development Research Laboratories, Maruho Co., Ltd., Kyoto, Japan
| | - Yuko Ishii
- Drug Development Laboratories, Kyoto R&D Center, Drug Development Research Laboratories, Maruho Co., Ltd., Kyoto, Japan
| | - Ayu Kashiwagi
- Drug Development Laboratories, Kyoto R&D Center, Drug Development Research Laboratories, Maruho Co., Ltd., Kyoto, Japan
| | - Mika Fujikawa
- Drug Development Laboratories, Kyoto R&D Center, Drug Development Research Laboratories, Maruho Co., Ltd., Kyoto, Japan
| | - Keisuke Kikuchi
- Drug Development Laboratories, Kyoto R&D Center, Drug Development Research Laboratories, Maruho Co., Ltd., Kyoto, Japan
| | - Ryota Hashimoto
- Drug Development Laboratories, Kyoto R&D Center, Drug Development Research Laboratories, Maruho Co., Ltd., Kyoto, Japan
| | - Yuhki Ueda
- Drug Development Laboratories, Kyoto R&D Center, Drug Development Research Laboratories, Maruho Co., Ltd., Kyoto, Japan
| | - Takaaki Doi
- Drug Development Laboratories, Kyoto R&D Center, Drug Development Research Laboratories, Maruho Co., Ltd., Kyoto, Japan
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25
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Nguyen HLT, Peng G, Trujillo-Paez JV, Yue H, Ikutama R, Takahashi M, Umehara Y, Okumura K, Ogawa H, Ikeda S, Niyonsaba F. The Antimicrobial Peptide AMP-IBP5 Suppresses Dermatitis-like Lesions in a Mouse Model of Atopic Dermatitis through the Low-Density Lipoprotein Receptor-Related Protein-1 Receptor. Int J Mol Sci 2023; 24:ijms24065200. [PMID: 36982275 PMCID: PMC10049508 DOI: 10.3390/ijms24065200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 03/07/2023] [Accepted: 03/07/2023] [Indexed: 03/11/2023] Open
Abstract
The antimicrobial peptide derived from insulin-like growth factor-binding protein 5 (AMP-IBP5) exhibits antimicrobial activities and immunomodulatory functions in keratinocytes and fibroblasts. However, its role in regulating skin barrier function remains unclear. Here, we investigated the effects of AMP-IBP5 on the skin barrier and its role in the pathogenesis of atopic dermatitis (AD). 2,4-Dinitrochlorobenzene was used to induce AD-like skin inflammation. Transepithelial electrical resistance and permeability assays were used to investigate tight junction (TJ) barrier function in normal human epidermal keratinocytes and mice. AMP-IBP5 increased the expression of TJ-related proteins and their distribution along the intercellular borders. AMP-IBP5 also improved TJ barrier function through activation of the atypical protein kinase C and Rac1 pathways. In AD mice, AMP-IBP5 ameliorated dermatitis-like symptoms restored the expression of TJ-related proteins, suppressed the expression of inflammatory and pruritic cytokines, and improved skin barrier function. Interestingly, the ability of AMP-IBP5 to alleviate inflammation and improve skin barrier function in AD mice was abolished in mice treated with an antagonist of the low-density lipoprotein receptor-related protein-1 (LRP1) receptor. Collectively, these findings indicate that AMP-IBP5 may ameliorate AD-like inflammation and enhance skin barrier function through LRP1, suggesting a possible role for AMP-IBP5 in the treatment of AD.
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Affiliation(s)
- Hai Le Thanh Nguyen
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Ge Peng
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Juan Valentin Trujillo-Paez
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Hainan Yue
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Risa Ikutama
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Miho Takahashi
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Yoshie Umehara
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Ko Okumura
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Hideoki Ogawa
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Shigaku Ikeda
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
| | - François Niyonsaba
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
- Faculty of International Liberal Arts, Juntendo University, Bunkyo-ku, Tokyo 113-8421, Japan
- Correspondence: ; Tel.: +81-3-5802-1591; Fax: +81-3-3813-5512
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26
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Epicutaneous Sensitization and Food Allergy: Preventive Strategies Targeting Skin Barrier Repair-Facts and Challenges. Nutrients 2023; 15:nu15051070. [PMID: 36904070 PMCID: PMC10005101 DOI: 10.3390/nu15051070] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/16/2023] [Accepted: 02/18/2023] [Indexed: 02/25/2023] Open
Abstract
Food allergy represents a growing public health and socio-economic problem with an increasing prevalence over the last two decades. Despite its substantial impact on the quality of life, current treatment options for food allergy are limited to strict allergen avoidance and emergency management, creating an urgent need for effective preventive strategies. Advances in the understanding of the food allergy pathogenesis allow to develop more precise approaches targeting specific pathophysiological pathways. Recently, the skin has become an important target for food allergy prevention strategies, as it has been hypothesized that allergen exposure through the impaired skin barrier might induce an immune response resulting in subsequent development of food allergy. This review aims to discuss current evidence supporting this complex interplay between the skin barrier dysfunction and food allergy by highlighting the crucial role of epicutaneous sensitization in the causality pathway leading to food allergen sensitization and progression to clinical food allergy. We also summarize recently studied prophylactic and therapeutic interventions targeting the skin barrier repair as an emerging food allergy prevention strategy and discuss current evidence controversies and future challenges. Further studies are needed before these promising strategies can be routinely implemented as prevention advice for the general population.
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27
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Katsarou S, Makris M, Vakirlis E, Gregoriou S. The Role of Tight Junctions in Atopic Dermatitis: A Systematic Review. J Clin Med 2023; 12:jcm12041538. [PMID: 36836073 PMCID: PMC9967084 DOI: 10.3390/jcm12041538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/31/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
BACKGROUND Tight junctions are transmembrane proteins that regulate the permeability of water, solutes including ions, and water-soluble molecules. The objective of this systematic review is to focus on the current knowledge regarding the role of tight junctions in atopic dermatitis and the possible impact on their therapeutic potential. METHODS A literature search was performed in PubMed, Google Scholar, and Cochrane library between 2009 and 2022. After evaluation of the literature and taking into consideration their content, 55 articles were finally included. RESULTS TJs' role in atopic dermatitis extends from a microscopic scale to having macroscopic effects, such as increased susceptibility to pathogens and infections and worsening of atopic dermatitis features. Impaired TJ barrier function and skin permeability in AD lesions is correlated with cldn-1 levels. Th2 inflammation inhibits the expression of cldn-1 and cldn-23. Scratching has also been reported to decrease cldn-1 expression. Dysfunctional TJs' interaction with Langerhans cells could increase allergen penetration. Susceptibility to cutaneous infections in AD patients could also be affected by TJ cohesion. CONCLUSIONS Dysfunction of TJs and their components, especially claudins, have a significant role in the pathogenesis and vicious circle of inflammation in AD. Discovering more basic science data regarding TJ functionality may be the key for the use of specific/targeted therapies in order to improve epidermal barrier function in AD.
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Affiliation(s)
- Spyridoula Katsarou
- 1st Department of Dermatology and Venereology, Medical School, National and Kapodistrian University of Athens, Andreas Syggros Hospital, 11528 Athens, Greece
- Correspondence:
| | - Michael Makris
- 2nd Department of Dermatology and Venereology, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, Allergy Unit, 12461 Athens, Greece
| | - Efstratios Vakirlis
- 1st Department of Dermatology and Venereology, Medical School, Aristotle University, 54124 Thessaloniki, Greece
| | - Stamatios Gregoriou
- 1st Department of Dermatology and Venereology, Medical School, National and Kapodistrian University of Athens, Andreas Syggros Hospital, 11528 Athens, Greece
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28
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Atluri K, Manne S, Nalamothu V, Mantel A, Sharma PK, Babu RJ. Advances in Current Drugs and Formulations for the Management of Atopic Dermatitis. Crit Rev Ther Drug Carrier Syst 2023; 40:1-87. [PMID: 37585309 DOI: 10.1615/critrevtherdrugcarriersyst.2023042979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
Atopic dermatitis (AD) is a chronic, relapsing inflammatory skin disease with a complex pathophysiology. Treatment of AD remains challenging owing to the presence of a wide spectrum of clinical phenotypes and limited response to existing therapies. However, recent genetic, immunological, and pathophysiological insights into the disease mechanism resulted in the invention of novel therapeutic drug candidates. This review provides a comprehensive overview of current therapies and assesses various novel drug delivery strategies currently under clinical investigation. Further, this review majorly emphasizes on various topical treatments including emollient therapies, barrier repair agents, topical corticosteroids (TCS), phosphodiesterase 4 (PDE4) inhibitors, calcineurin inhibitors, and Janus kinase (JAK)-signal transducer and activator of transcription (STAT) pathway inhibitors. It also discusses biological and systemic therapies, upcoming treatments based on ongoing clinical trials. Additionally, this review scrutinized the use of pharmaceutical inactive ingredients in the approved topical dosage forms for AD treatment.
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Affiliation(s)
| | | | | | | | | | - R Jayachandra Babu
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL 36849, USA
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29
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Hammond M, Gamal A, Mukherjee PK, Damiani G, McCormick TS, Ghannoum MA, Nedorost S. Cutaneous dysbiosis may amplify barrier dysfunction in patients with atopic dermatitis. Front Microbiol 2022; 13:944365. [PMID: 36452925 PMCID: PMC9701744 DOI: 10.3389/fmicb.2022.944365] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 10/13/2022] [Indexed: 09/12/2023] Open
Abstract
Atopic dermatitis (AD) is associated with cutaneous dysbiosis, barrier defects, and immune dysregulation, but the interplay between these factors needs further study. Early-onset barrier dysfunction may facilitate an innate immune response to commensal organisms and, consequently, the development of allergic sensitization. We aimed to compare the cutaneous microbiome in patients with active dermatitis with and without a history of childhood flexural dermatitis (atopic dermatitis). Next-gen Ion-Torrent deep-sequencing identified AD-associated changes in the skin bacterial microbiome ("bacteriome") and fungal microbiome ("mycobiome") of affected skin in swabs from areas of skin affected by dermatitis. Data were analyzed for diversity, abundance, and inter-kingdom correlations. Microbial interactions were assessed in biofilms using metabolic activity (XTT) assay and scanning electron microscopy (SEM), while host-pathogen interactions were determined in cultured primary keratinocytes exposed to biofilms. Increased richness and abundance of Staphylococcus, Lactococcus, and Alternaria were found in atopics. Staphylococcus and Alternaria formed robust mixed-species biofilms (based on XTT and SEM) that were resistant to antifungals/antimicrobials. Furthermore, their biofilm supernatant was capable of influencing keratinocytes biology (pro-inflammatory cytokines and structural proteins), suggesting an additive effect on AD-associated host response. In conclusion, microbial inter-kingdom and host-microbiome interactions may play a critical role in the modulation of atopic dermatitis to a greater extent than in non-atopic adults with allergic contact dermatitis.
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Affiliation(s)
- Margaret Hammond
- Department of Dermatology, University Hospitals Cleveland Medical Center/Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Ahmed Gamal
- Department of Dermatology, University Hospitals Cleveland Medical Center/Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Pranab K. Mukherjee
- Department of Dermatology, University Hospitals Cleveland Medical Center/Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Giovanni Damiani
- Department of Dermatology, University Hospitals Cleveland Medical Center/Case Western Reserve University School of Medicine, Cleveland, OH, United States
- Department of Biomedical, Surgical and Dental Sciences University of Milan, Milan, Italy
- Clinical Dermatology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- Department of Pharmaceutical and Pharmacological Sciences, PhD Degree Program in Pharmacological Sciences, University of Padua, Padua, Italy
| | - Thomas S. McCormick
- Department of Dermatology, University Hospitals Cleveland Medical Center/Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Mahmoud A. Ghannoum
- Department of Dermatology, University Hospitals Cleveland Medical Center/Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Susan Nedorost
- Department of Dermatology, University Hospitals Cleveland Medical Center/Case Western Reserve University School of Medicine, Cleveland, OH, United States
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30
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Fujikawa M, Sugimoto H, Tamura R, Fujikawa K, Yamagishi A, Ueda Y. Effects of mucopolysaccharide polysulphate on tight junction barrier in human epidermal keratinocytes. Exp Dermatol 2022; 31:1676-1684. [PMID: 35770317 PMCID: PMC9796026 DOI: 10.1111/exd.14637] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/20/2022] [Accepted: 06/27/2022] [Indexed: 12/30/2022]
Abstract
Tight junctions (TJs) play important roles in epidermal barrier function and their dysfunction is involved in the pathogenesis of various skin diseases, including atopic dermatitis (AD). Mucopolysaccharide polysulphate (MPS) is the active ingredient of a moisturizing agent used to treat xerosis in patients with AD; however, its mechanism of action on TJ barrier function remains unclear. To elucidate the effects of MPS on TJs, adult human epidermal keratinocyte (HEKa) cells were exposed to MPS, subjected to Western blotting and quantitative PCR analyses for the investigation of TJ-related factors. MPS treatment significantly increased the mRNA and protein expression of claudin-1 (CLDN1) and zonula occludens-1, and significantly increased transepithelial electrical resistance (TEER), which indicates TJ integrity. Conversely, the sulphated and non-sulphated glycosaminoglycans, chondroitin sulphate and hyaluronic acid, respectively, had little effect on TEER or the expression of mRNAs or TJ-related proteins. Interestingly, MPS treatment also inactivated the extracellular signal-regulated kinase signalling pathway, which is known to negatively regulate CLDN1 expression. Furthermore, MPS notably improved the reduction in CLDN1 expression and TEER caused by histamine, which is upregulated in the skin of patients with AD and is known to disrupt the TJ barrier function. Taken together, these findings demonstrate that treatment with the moisturizing agent, MPS, can repair TJ dysfunction and could therefore represent a new therapeutic option for treating patients with AD.
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Affiliation(s)
| | | | - Rie Tamura
- Kyoto R&D Center, Maruho Co., Ltd.KyotoJapan
| | | | | | - Yuhki Ueda
- Kyoto R&D Center, Maruho Co., Ltd.KyotoJapan
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31
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Yan X, Tsuji G, Hashimoto-Hachiya A, Furue M. Galactomyces Ferment Filtrate Potentiates an Anti-Inflammaging System in Keratinocytes. J Clin Med 2022; 11:6338. [PMID: 36362566 PMCID: PMC9657190 DOI: 10.3390/jcm11216338] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/21/2022] [Accepted: 10/25/2022] [Indexed: 12/24/2023] Open
Abstract
Skincare products play a crucial role in preventing the dry skin induced by various causes. Certain ingredients can help to improve the efficacy of skincare products. Galactomyces ferment filtrate (GFF) is such a functional ingredient. Its use originated from the empirical observation that the hands of sake brewers who deal with yeast fermentation retain a beautiful and youthful appearance. Consequently, skincare products based on GFF are widely used throughout the world. Recent studies have demonstrated that GFF activates an aryl hydrocarbon receptor (AHR) and upregulates the expression of filaggrin, a pivotal endogenous source of natural moisturizing factors, in epidermal keratinocytes. It also activates nuclear factor erythroid-2-related factor 2 (NRF2), the antioxidative master transcription factor, and exhibits potent antioxidative activity against oxidative stress induced by ultraviolet irradiation and proinflammatory cytokines, which also accelerate inflammaging. GFF-mediated NRF2 activation downregulates the expression of CDKN2A, which is known to be overexpressed in senescent keratinocytes. Moreover, GFF enhances epidermal terminal differentiation by upregulating the expression of caspase-14, claudin-1, and claudin-4. It also promotes the synthesis of the antiinflammatory cytokine IL-37 and downregulates the expression of proallergic cytokine IL-33 in keratinocytes. In addition, GFF downregulates the expression of the CXCL14 and IL6R genes, which are involved in inflammaging. These beneficial properties might underpin the potent barrier-protecting and anti-inflammaging effects of GFF-containing skin formulae.
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Affiliation(s)
- Xianghong Yan
- SK-II Science Communications, Kobe Innovation Center, Procter and Gamble Innovation, Kobe 651-0088, Japan
| | - Gaku Tsuji
- Research and Clinical Center for Yusho and Dioxin, Kyushu University Hospital, Fukuoka 812-8582, Japan
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Akiko Hashimoto-Hachiya
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Masutaka Furue
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
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Chen K, Shang S, Yu S, Cui L, Li S, He N. Identification and exploration of pharmacological pyroptosis-related biomarkers of ulcerative colitis. Front Immunol 2022; 13:998470. [PMID: 36311726 PMCID: PMC9606687 DOI: 10.3389/fimmu.2022.998470] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 09/26/2022] [Indexed: 11/25/2022] Open
Abstract
Ulcerative colitis (UC) is a chronic inflammatory bowel disease (IBD). Its etiology is unclear. Much evidence suggests that the death of abnormal intestinal epithelial cells (IECs) leads to intestinal barrier disruption, and the subsequent inflammatory response plays a vital role in UC. Pyroptosis is a form of programmed inflammatory cell death, and the role of pyroptosis in UC etiology remains to be explored. This study identified 10 hub genes in pyroptosis by gene expression profiles obtained from the GSE87466 dataset. Meanwhile, the biomarkers were screened based on gene significance (GS) and module membership (MM) through the Weighted Gene Co-Expression Network Analysis (WGCNA). The following analysis indicated that hub genes were closely associated with the UC progression and therapeutic drug response. The single-cell RNA (scRNA) sequencing data from UC patients within the GSE162335 dataset indicated that macrophages were most related to pyroptosis. Finally, the expression of hub genes and response to the therapeutic drug [5-aminosalicylic acid (5-ASA)] were verified in dextran sulfate sodium (DSS)-induced colitis mice. Our study identified IL1B as the critical pyroptosis-related biomarker in UC. The crosstalk between macrophage pyroptosis and IEC pyroptosis may play an essential role in UC, deserving further exploration.
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Affiliation(s)
| | | | | | | | | | - Ningning He
- *Correspondence: Shangyong Li, ; Ningning He,
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Naser AN, Guiler W, Lu Q, Chen Y. Nanoarchitecture and molecular interactions of epithelial cell junction proteins revealed by super-resolution microscopy. Ann N Y Acad Sci 2022; 1516:175-187. [PMID: 35819053 PMCID: PMC9588527 DOI: 10.1111/nyas.14855] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Epithelial cells are polarized with defined apical tight junctions (TJs), lateral adherens junctions (AJs), and basal integrin-matrix interactions. However, it is increasingly recognized that resident cell junction proteins can be found in varying locations and with previously unrecognized functions. Our study here presents the nanoarchitecture and nanocolocalization of cell junction proteins in culture and tissue by stochastic optical reconstruction microscopy (STORM). The Z-axial view of noncancerous MDCK-II and PZ-HPV-7 cell-cell junctions resolved β-catenin and p120ctn localizations to TJs and AJs, with p120ctn apical to β-catenin and colocalizing with TJ protein claudin-7. More basally, p120ctn and β-catenin become colocalized. This topography was lost in isogenic Ras-transformed MDCK cells and cancerous PC3 cells, where p120ctn becomes basally localized in relation to β-catenin. Claudin-7 gene conditional knockout (cKO) in mice also have altered polarity of p120ctn relative to β-catenin, like that seen in normal-to-cancer cell phenotypic transformation. Additionally, claudin-7 cKO resulted in redistribution and relocalization of other cell junction proteins, including claudin-1, zonula occludens-1, integrin α2, epithelial cell adhesion molecule, and focal adhesion kinase (FAK); specifically, integrin α2 and FAK were observed at the apical-lateral compartment. Our data show that STORM reveals regional cellular junction nanoarchitecture previously uncharacterized, providing new insight into potential trans-compartmental modulation of protein functions.
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Affiliation(s)
- Amna N. Naser
- Department of Anatomy and Cell Biology, Brody School of MedicineEast Carolina UniversityGreenvilleNorth CarolinaUSA
| | - William Guiler
- Department of Anatomy and Cell Biology, Brody School of MedicineEast Carolina UniversityGreenvilleNorth CarolinaUSA
| | - Qun Lu
- Department of Anatomy and Cell Biology, Brody School of MedicineEast Carolina UniversityGreenvilleNorth CarolinaUSA
| | - Yan‐Hua Chen
- Department of Anatomy and Cell Biology, Brody School of MedicineEast Carolina UniversityGreenvilleNorth CarolinaUSA
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Mohamad J, Samuelov L, Assaf S, Malki L, Malovitski K, Meijers O, Adir N, Granot E, Pavlovsky M, Sarig O, Sprecher E. Autosomal recessive congenital ichthyosis caused by a pathogenic missense variant in CLDN1. Am J Med Genet A 2022; 188:2879-2887. [PMID: 35920354 DOI: 10.1002/ajmg.a.62924] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/12/2022] [Accepted: 07/16/2022] [Indexed: 01/31/2023]
Abstract
Autosomal recessive congenital ichthyosis (ARCI) refers to a large and genetically heterogenous group of non-syndromic disorders of cornification featuring diffuse scaling. Ichthyosis, leukocyte vacuoles, alopecia, and sclerosing cholangitis (ILVASC) syndrome is a rare autosomal recessive syndromic form of ichthyosis. The disease usually results from premature termination codon-causing pathogenic variants in CLDN1 encoding CLAUDIN-1 (CLDN1). We used whole exome sequencing (WES), Sanger sequencing, 3D protein modeling, Western blotting, and immunofluorescence confocal microscopy to delineate the genetic basis of ichthyosis in two siblings with ichthyosis but no other ectodermal abnormalities. One of the two siblings underwent liver transplantation in early childhood due to biliary atresia. Both patients were found to carry a homozygous missense pathogenic variant, c.242G>A (p.Arg81His), in CLDN1. The variant resulted in decreased CLDN1 expression in patient skin. 3D protein modeling predicted that p.Arg81His induces deleterious conformational changes. Accordingly, HaCaT cells transfected with a construct expressing the mutant CLDN1 cDNA featured decreased levels and mislocation of CLDN1 as compared with cells expressing the wildtype cDNA. In conclusion, we describe the first pathogenic missense variant in CLDN1 shown to result in ARCI.
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Affiliation(s)
- Janan Mohamad
- Division of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liat Samuelov
- Division of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sari Assaf
- Division of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liron Malki
- Division of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Kiril Malovitski
- Division of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Odile Meijers
- Division of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Noam Adir
- Schulich Faculty of Chemistry, Technion, Haifa, Israel
| | | | - Mor Pavlovsky
- Division of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ofer Sarig
- Division of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Eli Sprecher
- Division of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Choi JK, Park JY, Lee S, Choi YA, Kwon S, Shin MJ, Yun HS, Jang YH, Kang J, Kim N, Khang D, Kim SH. Greater Plasma Protein Adsorption on Mesoporous Silica Nanoparticles Aggravates Atopic Dermatitis. Int J Nanomedicine 2022; 17:4599-4617. [PMID: 36199478 PMCID: PMC9528962 DOI: 10.2147/ijn.s383324] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 09/22/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose The protein corona surrounding nanoparticles has attracted considerable attention as it induces subsequent inflammatory responses. Although mesoporous silica nanoparticles (MSN) are commonly used in medicines, cosmetics, and packaging, the inflammatory effects of the MSN protein corona on the cutaneous system have not been investigated till date. Methods We examined the greater plasma protein adsorption on MSN leads to serious inflammatory reactions in Dermatophagoides farinae extract (DFE)-induced mouse atopic dermatitis (AD)-like skin inflammation because of increased uptake by keratinocytes. Results We compare the AD lesions induced by MSN and colloidal (non-porous) silica nanoparticles (CSN), which exhibit different pore architectures but similar dimensions and surface chemistry. MSN-corona treatment of severe skin inflammation in a DFE-induced in vivo AD model greatly increases mouse ear epidermal thickness and infiltration of immune cells compared with the CSN-corona treatment. Moreover, MSN-corona significantly increase AD-specific immunoglobulins, serum histamine, and Th1/Th2/Th17 cytokines in the ear and lymph nodes. MSN-corona induce more severe cutaneous inflammation than CSN by significantly decreasing claudin-1 expression. Conclusion This study demonstrates the novel impact of the MSN protein corona in inducing inflammatory responses through claudin-1 downregulation and suggests useful clinical guidelines for MSN application in cosmetics and drug delivery systems.
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Affiliation(s)
- Jin Kyeong Choi
- Department of Immunology, Jeonbuk National University Medical School, Jeonju, 54907, Republic of Korea
| | - Jun-Young Park
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, 21999, Republic of Korea
| | - Soyoung Lee
- Immunoregulatory Materials Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Young-Ae Choi
- CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, 41944, Republic of Korea
| | - Song Kwon
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, 21999, Republic of Korea
| | - Min Jun Shin
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, 21999, Republic of Korea
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, 21999, Republic of Korea
| | - Hui-Suk Yun
- Powder & Ceramics Division, Korea Institute of Materials Science, Changwon, 51508, Republic of Korea
| | - Yong Hyun Jang
- Department of Dermatology, School of Medicine, Kyungpook National University, Daegu, 41944, Republic of Korea
| | - Jinjoo Kang
- CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, 41944, Republic of Korea
| | - Namkyung Kim
- CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, 41944, Republic of Korea
| | - Dongwoo Khang
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, 21999, Republic of Korea
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, 21999, Republic of Korea
- Department of Physiology, School of Medicine, Gachon University, Incheon, 21999, Republic of Korea
- Correspondence: Dongwoo Khang, Department of Physiology, School of Medicine, Gachon University, Incheon, 21999, Republic of Korea, Tel +82 32 899 6515, Email
| | - Sang-Hyun Kim
- CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, 41944, Republic of Korea
- Sang-Hyun Kim, Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, 41944, Republic of Korea, Tel +82 53 420 4838, Email
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36
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Beier LS, Waldow A, Khomeijani Farahani S, Mannweiler R, Vidal-Y-Sy S, Brandner JM, Piontek J, Günzel D. Claudin targeting as an effective tool for directed barrier modulation of the viable epidermis. Ann N Y Acad Sci 2022; 1517:251-265. [PMID: 35994210 DOI: 10.1111/nyas.14879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Tight junction (TJ) formation is vital for epidermal barrier function. We aimed to specifically manipulate TJ barriers in the reconstructed human epidermis (RHE) by claudin-1 and -4 knockdown (KD) and by claudin-binding fusion proteins of glutathione S-transferase and modified C-terminal fragments of Clostridium perfringens enterotoxin (GST-cCPE). Impedance spectroscopy and tracer permeability imaging were employed for functional barrier assessment and investigation of claudin contribution. KD of claudin-1, but not claudin-4, impaired the paracellular barrier in vitro. Similarly, claudin-binding GST-cCPE variants weakened the paracellular but not the stratum corneum barrier. Combining both TJ targeting methods, we found that claudin-1 targeting by GST-cCPE after claudin-4 KD led to a marked decrease in paracellular barrier properties. Conversely, after claudin-1 KD, GST-cCPE did not further impair the barrier. Comparison of GST-cCPE variants with different claudin-1/claudin-4 affinities, NHS-fluorescein tracer detection, and immunostaining of RHE paraffin sections showed that GST-cCPE variants bind to extrajunctional claudin-1 and -4, which are differentially distributed along the stratum basale-stratum granulosum axis. GST-cCPE binding blocks these claudins, thereby specifically opening the paracellular barrier of RHE. The data indicate a critical role for claudin-1 in regulating paracellular permeability for ions and small molecules in the viable epidermis. Claudin targeting is presented as a proof-of-concept for precise barrier modulation.
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Affiliation(s)
- Laura-Sophie Beier
- Clinical Physiology/Nutritional Medicine, Medical Department, Division of Gastroenterology, Infectiology, Rheumatology, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Laboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Ayk Waldow
- Clinical Physiology/Nutritional Medicine, Medical Department, Division of Gastroenterology, Infectiology, Rheumatology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Saeed Khomeijani Farahani
- Clinical Physiology/Nutritional Medicine, Medical Department, Division of Gastroenterology, Infectiology, Rheumatology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Roman Mannweiler
- Clinical Physiology/Nutritional Medicine, Medical Department, Division of Gastroenterology, Infectiology, Rheumatology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sabine Vidal-Y-Sy
- Department of Dermatology and Venerology, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Johanna M Brandner
- Department of Dermatology and Venerology, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Jörg Piontek
- Clinical Physiology/Nutritional Medicine, Medical Department, Division of Gastroenterology, Infectiology, Rheumatology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Dorothee Günzel
- Clinical Physiology/Nutritional Medicine, Medical Department, Division of Gastroenterology, Infectiology, Rheumatology, Charité - Universitätsmedizin Berlin, Berlin, Germany
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Herpes Simplex Virus 1 Can Bypass Impaired Epidermal Barriers upon Ex Vivo Infection of Skin from Atopic Dermatitis Patients. J Virol 2022; 96:e0086422. [PMID: 35969080 PMCID: PMC9472615 DOI: 10.1128/jvi.00864-22] [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] [Indexed: 11/29/2022] Open
Abstract
To infect its human host, herpes simplex virus 1 (HSV-1) must overcome the protective barriers of skin and mucosa. Here, we addressed whether pathological skin conditions can facilitate viral entry via the skin surface and used ex vivo infection studies to explore viral invasion in atopic dermatitis (AD) skin characterized by disturbed barrier functions. Our focus was on the visualization of the onset of infection in single cells to determine the primary entry portals in the epidermis. After ex vivo infection of lesional AD skin, we observed infected cells in suprabasal layers indicating successful invasion in the epidermis via the skin surface which was never detected in control skin where only sample edges allowed viral access. The redistribution of filaggrin, loricrin, and tight-junction components in the lesional skin samples suggested multiple defective mechanical barriers. To dissect the parameters that contribute to HSV-1 invasion, we induced an AD-like phenotype by adding the Th2 cytokines interleukin 4 (IL-4) and IL-13 to healthy human skin samples. Strikingly, we detected infected cells in the epidermis, implying that the IL-4/IL-13-driven inflammation is sufficient to induce modifications allowing HSV-1 to penetrate the skin surface. In summary, not only did lesional AD skin facilitate HSV-1 penetration but IL-4/IL-13 responses alone allowed virus invasion. Our results suggest that the defective epidermal barriers of AD skin and the inflammation-induced altered barriers in healthy skin can make receptors accessible for HSV-1. IMPORTANCE Herpes simplex virus 1 (HSV-1) can target skin to establish primary infection in the epithelium. While the human skin provides effective barriers against viral invasion under healthy conditions, a prominent example of successful invasion is the disseminated HSV-1 infection in the skin of atopic dermatitis (AD) patients. AD is characterized by impaired epidermal barrier functions, chronic inflammation, and dysbiosis of skin microbiota. We addressed the initial invasion process of HSV-1 in atopic dermatitis skin to understand whether the physical barrier functions are sufficiently disturbed to allow the virus to invade skin and reach its receptors on skin cells. Our results demonstrate that HSV-1 can indeed penetrate and initiate infection in atopic dermatitis skin. Since treatment of skin with IL-4 and IL-13 already resulted in successful invasion, we assume that inflammation-induced barrier defects play an important role for the facilitated access of HSV-1 to its target cells.
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Watari A, Fujiwara K, Yagi K, Tachibana K, Katsurada T, Myoui A, Kondoh M. Homoharringtonine is a transdermal granular permeation enhancer. Biochem Biophys Res Commun 2022; 616:140-144. [PMID: 35679696 DOI: 10.1016/j.bbrc.2022.04.067] [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: 04/05/2022] [Revised: 04/12/2022] [Accepted: 04/14/2022] [Indexed: 11/02/2022]
Abstract
Although modulation of claudin-1-based tight junction (TJ) in stratum granulosum is an option for transdermal absorption of drugs, granular permeation enhancers have never been developed. We previously found that homoharringtonine (HHT), a natural alkanoid, weakened intestinal epithelial barrier with changing expression and cellular localization of TJ components such as claudin-1 and claudin-4. In the present study, we investigated whether HHT is an epidermal granular permeation enhancer. Treatment of normal human epidermal keratinocytes (NHEK) cells with HHT decreased claudin-1 and claudin-4 but not zonula occludens-1 and E-cadherin. HHT lowered TJ-integrity in NHEK cells, accompanied by permeation-enhancement of dextran (4 kDa) in a dose-dependent manner. Transdermal treatment of mice with HHT weakened epidermal barrier. HHT treatment enhanced transdermal absorption of dextran with a molecular mass of up to 10 kDa. Together, HHT may be a transdermal absorption enhancer.
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Affiliation(s)
- Akihiro Watari
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan; Department of Medical Innovation, Osaka University Hospital, Osaka, Japan.
| | - Kana Fujiwara
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Kiyohito Yagi
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Keisuke Tachibana
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | | | - Akira Myoui
- Department of Medical Innovation, Osaka University Hospital, Osaka, Japan
| | - Masuo Kondoh
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan.
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Hou DD, Gu YJ, Wang DC, Niu Y, Xu ZR, Jin ZQ, Wang XX, Li SJ. Therapeutic effects of myricetin on atopic dermatitis in vivo and in vitro. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 102:154200. [PMID: 35671605 DOI: 10.1016/j.phymed.2022.154200] [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: 11/25/2021] [Revised: 05/02/2022] [Accepted: 05/22/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Myricetin (Myr) is a flavonoid compound that exist widely in many natural plants. Myr has been proven to have multiple biological functions, including immunomodulatory and anti-inflammatory effects. PURPOSE In this study, we investigated the therapeutic effect of Myr on calcipotriol (MC903) induced atopic dermatitis (AD) mouse model and tumor necrosis factor (TNF)-α/interferon (IFN)-γ stimulated human immortal keratinocyte line (HaCaT) in vivo and in vitro. METHODS MC903 was applied topically to the left ears of mice to establish AD mouse model. After the AD model established successfully, the cream base, dexamethasone (DEX) cream or Myr cream were applied on the lesions of mice for 8 days. Through measuring ear thickness and scoring dermatitis severity, we evaluated the therapeutic effect of Myr, the draining lymph nodes (DLNs) and ears of the mice were collected for mechanistic study. In addition, TNF-α and IFN-γ-activated HaCaT cells were used to investigate the underlying mechanism. RESULTS Our data demonstrated that Myr alleviated the symptoms of AD by exerting anti-inflammatory and anti-allergic functions in vivo. We found that Myr treatment suppressed ear swelling and IgE level in the serum, reduced the infiltration of mast cells in skin lesions, decreased expressions of thymus and activation regulated chemokine (TARC), IL-4, IFN-γ and thymic stromal lymphopoietin (TSLP) in ear lesions, increased the expressions of filaggrin (FLG). Furthermore, our experimental results demonstrated that Myr down-regulated the mRNA expressions of T-bet and GATA-3 in DLNs. In vitro, Myr treatment decreased MDC and TARC expressions in IFN-γ and TNF-α-induced HaCaT cells by blocking the NF-κB and STAT1 signal pathway. CONCLUSION The present study is the first to investigate the anti-atopic effects of Myr. Our findings suggested the therapeutic effects of Myr against MC903-induced AD-like skin lesions in mice. Therefore, Myr may be a potential therapeutic agent for AD.
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Affiliation(s)
- Dian-Dong Hou
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, Huzhou University, Huzhou 313000, P.R. China.
| | - Ya-Jing Gu
- Huzhou University, Huzhou, 313000, P.R. China
| | - De-Cheng Wang
- The Second Clinical Medical Institute, Liaoning University of Traditional Chinese Medicine, Shenyang 110001, P.R. China
| | - Yuan Niu
- Huzhou University, Huzhou, 313000, P.R. China
| | - Zi-Ran Xu
- Huzhou University, Huzhou, 313000, P.R. China
| | | | - Xin-Xin Wang
- Basic Medical and Forensic Medicine, Baotou Medical college, Baotou 014040, P.R. China
| | - Si-Jia Li
- Liaoning University of Traditional Chinese medicine, Shenyang 110847, P.R. China
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The Fate of Epidermal Tight Junctions in the stratum corneum: Their Involvement in the Regulation of Desquamation and Phenotypic Expression of Certain Skin Conditions. Int J Mol Sci 2022; 23:ijms23137486. [PMID: 35806491 PMCID: PMC9267462 DOI: 10.3390/ijms23137486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/22/2022] [Accepted: 06/27/2022] [Indexed: 11/16/2022] Open
Abstract
We evaluated the presence of tight junction (TJ) remnants in the stratum corneum (SC) of in vitro reconstructed human epidermis and human skin explants subjected or not to an aggressive topical treatment with beta-lipohydroxy salicylic acid (LSA) for 24 h. LSA-treated samples showed an increased presence of TJ remnants in the two lowermost layers of the SC, as quantified with standard electron microscopy. The topical aggression-induced overexpression of TJ-like cell–cell envelope fusions may influence SC functions: (1) directly, through an enhanced cohesion, and (2) indirectly, by impeding accessibility of peripheral corneodesmosomes to extracellular hydrolytic enzymes and, thus, slowing down desquamation. Observations of ichthyotic epidermis in peeling skin disease (PSD; corneodesmosin deficiency; two cases) and ichthyosis hypotrichosis sclerosing cholangitis syndrome (IHSC/NISCH; absence of claudin-1; two cases) also demonstrated increased persistence of TJ-like intercellular fusions in pathological SC and contributed to the interpretation of the diseases’ pathological mechanisms.
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41
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Xia Y, Cao H, Zheng J, Chen L. Claudin-1 Mediated Tight Junction Dysfunction as a Contributor to Atopic March. Front Immunol 2022; 13:927465. [PMID: 35844593 PMCID: PMC9277052 DOI: 10.3389/fimmu.2022.927465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 05/27/2022] [Indexed: 11/16/2022] Open
Abstract
Atopic march refers to the phenomenon wherein the occurrence of asthma and food allergy tends to increase after atopic dermatitis. The mechanism underlying the progression of allergic inflammation from the skin to gastrointestinal (GI) tract and airways has still remained elusive. Impaired skin barrier was proposed as a risk factor for allergic sensitization. Claudin-1 protein forms tight junctions and is highly expressed in the epithelium of the skin, airways, and GI tract, thus, the downregulation of claudin-1 expression level caused by CLDN-1 gene polymorphism can mediate common dysregulation of epithelial barrier function in these organs, potentially leading to allergic sensitization at various sites. Importantly, in patients with atopic dermatitis, asthma, and food allergy, claudin-1 expression level was significantly downregulated in the skin, bronchial and intestinal epithelium, respectively. Knockdown of claudin-1 expression level in mouse models of atopic dermatitis and allergic asthma exacerbated allergic inflammation, proving that downregulation of claudin-1 expression level contributes to the pathogenesis of allergic diseases. Therefore, we hypothesized that the tight junction dysfunction mediated by downregulation of claudin-1 expression level contributes to atopic march. Further validation with clinical data from patients with atopic march or mouse models of atopic march is needed. If this hypothesis can be fully confirmed, impaired claudin-1 expression level may be a risk factor and likely a diagnostic marker for atopic march. Claudin-1 may serve as a valuable target to slowdown or block the progression of atopic march.
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Effect of Zeolite Supplementation on Gene Expression in the Intestinal Mucosa in the Context of Immunosafety Support in Poultry. Genes (Basel) 2022; 13:genes13050732. [PMID: 35627116 PMCID: PMC9140869 DOI: 10.3390/genes13050732] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/15/2022] [Accepted: 04/19/2022] [Indexed: 12/10/2022] Open
Abstract
Zeolite is an effective and non-toxic silicate mineral. Its properties are widely used in industry due to its sorption and ion exchange properties. Due to its excellent chemical properties, it has also great potential in poultry production as a food additive or supplement to bedding. This is of great importance for the biosafety and hygiene of production. The study aimed to analyse the effects of simultaneous application of zeolite to feed and bedding on production parameters and expression of genes related to intestinal tightness, organism defence, and immune response. Male Ross 308 broiler chickens were used in the experiment. In the experimental group, an external factor in the form of a powdery zeolite was used for feed and pelleted bedding. On the day of slaughter, the caecal mucosa was collected for gene expression analysis. We showed no significant changes in the tissue composition of the carcasses, but zeolite had a beneficial effect on the carcass yield. The analysis of the immune gene panel showed a significant increase in the expression of the interleukins and interferons genes. We have demonstrated the effect of zeolite on the improvement of the intestinal barrier and increasing the tightness of the intestines. There were no changes in gene expression related to the host’s defence against infections; therefore, based on the obtained results, it was concluded that zeolite can be considered an immunomodulating factor of the immune system.
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Dai X, Muto J, Shiraishi K, Utsunomiya R, Mori H, Murakami M, Sayama K. TSLP impairs epidermal barrier integrity by stimulating the formation of nuclear IL-33/phosphorylated STAT3 complex in human keratinocytes. J Invest Dermatol 2022; 142:2100-2108.e5. [DOI: 10.1016/j.jid.2022.01.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 12/20/2021] [Accepted: 01/04/2022] [Indexed: 12/20/2022]
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Yoshida T, Beck LA, De Benedetto A. Skin barrier defects in atopic dermatitis: From old idea to new opportunity. Allergol Int 2022; 71:3-13. [PMID: 34916117 PMCID: PMC8934597 DOI: 10.1016/j.alit.2021.11.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 01/31/2023] Open
Abstract
Atopic dermatitis (AD) is the most common chronic skin inflammatory disease, with a profound impact on patients’ quality of life. AD varies considerably in clinical course, age of onset and degree to which it is accompanied by allergic and non-allergic comorbidities. Skin barrier impairment in both lesional and nonlesional skin is now recognized as a critical and often early feature of AD. This may be explained by a number of abnormalities identified within both the stratum corneum and stratum granulosum layers of the epidermis. The goal of this review is to provide an overview of key barrier defects in AD, starting with a historical perspective. We will also highlight some of the commonly used methods to characterize and quantify skin barrier function. There is ample opportunity for further investigative work which we call out throughout this review. These include: quantifying the relative impact of individual epidermal abnormalities and putting this in a more holistic view with physiological measures of barrier function, as well as determining whether these barrier-specific endotypes predict clinical phenotypes (e.g. age of onset, natural history, comorbidities, response to therapies, etc). Mechanistic studies with new (and in development) AD therapies that specifically target immune pathways, Staphylococcus aureus abundance and/or skin barrier will help us understand the dynamic crosstalk between these compartments and their relative importance in AD.
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Ferrucci S, Romagnuolo M, Maronese CA, Germiniasi F, Tavecchio S, Angileri L, Casazza G, Marzano AV, Genovese G. Skin barrier status during dupilumab treatment in patients with severe atopic dermatitis. Ther Adv Chronic Dis 2021; 12:20406223211058332. [PMID: 34900210 PMCID: PMC8655442 DOI: 10.1177/20406223211058332] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 10/20/2021] [Indexed: 12/02/2022] Open
Abstract
Background: Atopic dermatitis (AD) is a common chronic-relapsing inflammatory skin disease hallmarked by epidermal barrier dysfunction, increased transepidermal water loss (TEWL) and decreased skin hydration. Recent findings on the T helper 2 (Th2)-driven pathogenesis of AD have led to the development of dupilumab, a monoclonal antibody directed against interleukin-4 and interleukin-13 that has been demonstrated to be effective in the treatment of moderate-to-severe AD. The effect of dupilumab on skin barrier dysfunction, however, has not yet been adequately investigated. Objectives: The primary endpoint of this study was to assess the status of the skin barrier in nonlesional skin of patients with severe AD treated with dupilumab, by evaluating the association between the relative variation of TEWL and the achievement of a 75% reduction of EASI (EASI75) over time. Methods: TEWL was measured below the antecubital fossae by means of the Vapometer® at baseline, at week 4 (T4), at week 16 (T16) and at week 32 after dupilumab starting. EASI and NRS-itch were measured at the same time points. Results: Seventy-eight patients with severe AD treated with dupilumab were enrolled. Median TEWL relative variation respect to baseline was significantly higher in patients who achieved EASI75 as compared with those who did not achieve EASI75 at T16 and at T32, but not at T4. Conclusion: During dupilumab treatment, TEWL on nonlesional skin tends to significantly improve 4 months after treatment initiation and could be a good tool for monitoring response to therapy.
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Affiliation(s)
- Silvia Ferrucci
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Maurizio Romagnuolo
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Carlo Alberto Maronese
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Francesca Germiniasi
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Simona Tavecchio
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Luisa Angileri
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Giovanni Casazza
- Dipartimento di Scienze Biomediche e Cliniche 'L. Sacco', Università degli Studi di Milano, Milan, Italy
| | - Angelo Valerio Marzano
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Pace 9, 20122 Milan, Italy. Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Giovanni Genovese
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
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Tremblay A, Simard M, Morin S, Pouliot R. Docosahexaenoic Acid Modulates Paracellular Absorption of Testosterone and Claudin-1 Expression in a Tissue-Engineered Skin Model. Int J Mol Sci 2021; 22:13091. [PMID: 34884896 PMCID: PMC8658185 DOI: 10.3390/ijms222313091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/24/2021] [Accepted: 11/29/2021] [Indexed: 11/16/2022] Open
Abstract
Healthy skin moLEdels produced by tissue-engineering often present a suboptimal skin barrier function as compared with normal human skin. Moreover, skin substitutes reconstructed according to the self-assembly method were found to be deficient in polyunsaturated fatty acids (PUFAs). Therefore, in this study, we investigated the effects of a supplementation of the culture media with docosahexaenoic acid (DHA) on the barrier function of skin substitutes. To this end, 10 μM DHA-supplemented skin substitutes were produced (n = 3), analyzed, and compared with controls (substitutes without supplementation). A Franz cell diffusion system, followed by ultra-performance liquid chromatography, was used to perform a skin permeability to testosterone assay. We then used gas chromatography to quantify the PUFAs found in the epidermal phospholipid fraction of the skin substitutes, which showed successful DHA incorporation. The permeability to testosterone was decreased following DHA supplementation and the lipid profile was improved. Differences in the expression of the tight junction (TJ) proteins claudin-1, claudin-4, occludin, and TJ protein-1 were observed, principally a significant increase in claudin-1 expression, which was furthermore confirmed by Western blot analyses. In conclusion, these results confirm that the DHA supplementation of cell culture media modulates different aspects of skin barrier function in vitro and reflects the importance of n-3 PUFAs regarding the lipid metabolism in keratinocytes.
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Affiliation(s)
- Andréa Tremblay
- Centre de Recherche en Organogénèse Expérimentale de l’Université Laval/LOEX, Québec, QC G1J 1Z4, Canada; (A.T.); (M.S.); (S.M.)
- Axe Médecine Régénératrice, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC G1J 1Z4, Canada
- Faculté de Pharmacie de l’Université Laval, Québec, QC G1V 0A6, Canada
| | - Mélissa Simard
- Centre de Recherche en Organogénèse Expérimentale de l’Université Laval/LOEX, Québec, QC G1J 1Z4, Canada; (A.T.); (M.S.); (S.M.)
- Axe Médecine Régénératrice, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC G1J 1Z4, Canada
- Faculté de Pharmacie de l’Université Laval, Québec, QC G1V 0A6, Canada
| | - Sophie Morin
- Centre de Recherche en Organogénèse Expérimentale de l’Université Laval/LOEX, Québec, QC G1J 1Z4, Canada; (A.T.); (M.S.); (S.M.)
- Axe Médecine Régénératrice, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC G1J 1Z4, Canada
- Faculté de Pharmacie de l’Université Laval, Québec, QC G1V 0A6, Canada
| | - Roxane Pouliot
- Centre de Recherche en Organogénèse Expérimentale de l’Université Laval/LOEX, Québec, QC G1J 1Z4, Canada; (A.T.); (M.S.); (S.M.)
- Axe Médecine Régénératrice, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC G1J 1Z4, Canada
- Faculté de Pharmacie de l’Université Laval, Québec, QC G1V 0A6, Canada
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Mannweiler R, Bergmann S, Vidal‐y‐Sy S, Brandner JM, Günzel D. Direct assessment of individual skin barrier components by electrical impedance spectroscopy. Allergy 2021; 76:3094-3106. [PMID: 33844311 DOI: 10.1111/all.14851] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 02/17/2021] [Accepted: 03/07/2021] [Indexed: 01/23/2023]
Abstract
BACKGROUND Expression of the tight junction proteins Cldn1 and 4 is altered in skin diseases such as atopic dermatitis, and Cldn1 deficiency affects skin barrier formation. Impedance spectroscopy (IS) has been proven to allow detection of alterations in the skin barrier but is currently unable to separate effects on viable epidermis (VE) and stratum corneum (SC). METHODS Effects of siRNA-mediated Cldn1 and 4 knockdown in reconstructed human epidermis (RHE) on VE and SC barrier function were investigated with Ussing chamber-based IS. Barrier components were sequentially altered, employing iron oxide nanoparticles and EGTA, to identify their contribution to the impedance spectrum. Resistance changes due to apically applied hyperosmolar electrolyte were used to identify barrier defects non-invasively. RESULTS IS of RHE yielded two relaxation frequencies, representing the barrier properties of the SC (~1000 Hz) and VE (~100 Hz). As proof of concept, it was shown that the Cldn1 knockdown-induced resistance drop arises from the impairment of both SC and VE, indicated by a shift of both relaxation frequencies. Hyperosmolar electrolyte penetration allowed non-invasive detection of Cldn1 knockdown via time-dependent frequency shifts. The absence of Cldn4 knockdown-induced changes revealed the weaknesses of transepithelial electrical resistance analysis. CONCLUSION In conclusion, the present technique allows to separately measure the barrier properties of SC and VE and further evaluate the Cldn1 and 4 knockdown impact on the skin barrier. As the measurement with agarose-embedded electrolyte allowed non-invasive identification of the Cldn1 knockdown, this opens the way to detailed in vivo skin barrier assessment.
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Affiliation(s)
- Roman Mannweiler
- Institute of Clinical Physiology/Nutritional Medicine Medical Department Division of Gastroenterology, Infectiology, Rheumatology Charité – Universitätsmedizin Berlin Berlin Germany
| | - Sophia Bergmann
- Department of Dermatology and Venerology University Hospital Hamburg‐Eppendorf Hamburg Germany
| | - Sabine Vidal‐y‐Sy
- Department of Dermatology and Venerology University Hospital Hamburg‐Eppendorf Hamburg Germany
| | - Johanna M. Brandner
- Department of Dermatology and Venerology University Hospital Hamburg‐Eppendorf Hamburg Germany
| | - Dorothee Günzel
- Institute of Clinical Physiology/Nutritional Medicine Medical Department Division of Gastroenterology, Infectiology, Rheumatology Charité – Universitätsmedizin Berlin Berlin Germany
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Shetty K, Sherje AP. Nano intervention in topical delivery of corticosteroid for psoriasis and atopic dermatitis-a systematic review. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2021; 32:88. [PMID: 34331599 PMCID: PMC8325647 DOI: 10.1007/s10856-021-06558-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 07/07/2021] [Indexed: 05/03/2023]
Abstract
Atopic dermatitis (AD) and psoriasis are highly prevalent, complex, chronic inflammatory skin diseases that immensly affect the patient's quality of life. While there is no definitive cure for these conditions, suppressive medications aim at managing the symptoms of these diseases. The application of emollients accompanied by symptomatic anti-inflammatory therapy consisting of topical corticosteroids (TCS) is extensively employed for controlling the symptoms among general practitioners making this therapeutic class an indispensable pillar of dermatotherapeutics. The first TCS, hydrocortisone (HC) introduced in the early 1950s led to the development of different steroidal moieties of varying potencies by inducing chemical modifications to the basic steroid structure. The wide spectrum of the available range of formulations and potency provides flexibility to treat all patient groups, different phases of the diseases, and different anatomical sites. Conventional TCS therapy suffers from drawbacks such as low drug permeation and retention rate. Thus, novel nanoformulations have been developed to overcome these problems. This review provides an insight into the current state of nanocarrier-mediated topical delivery of corticosteroids monotherapy and combination therapy with special emphasis on targeting psoriasis and AD.
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Affiliation(s)
- Kshitya Shetty
- SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, 400 056, India
| | - Atul P Sherje
- SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, 400 056, India.
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Murakami M, Akagi T, Sasano Y, Akashi M. Effect of 3D-Fibroblast Dermis Constructed by Layer-by-Layer Cell Coating Technique on Tight Junction Formation and Function in Full-Thickness Skin Equivalent. ACS Biomater Sci Eng 2021; 7:3835-3844. [PMID: 34286576 DOI: 10.1021/acsbiomaterials.1c00375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Human skin equivalents (HSEs) consisting of an epidermis and dermis have been used as promising tools for drug evaluation and for clinical applications in regenerative medicine. Normal human dermal fibroblasts (NHDFs) are essential for the fabrication of HSEs because they play an important role in the maturation of the epidermis. Recently, epidermal tight junctions (TJs), which are complex cell-cell junctions, have attracted much attention as a second barrier and regulator for other barrier functions. In a previous study, we revealed the expression of TJ-related proteins and the time course of formation of TJ structure in the HSE (layer-by-layer (LbL)-three-dimensional (3D) Skin) constructed by layer-by-layer (LbL) cell coating technique that have a unique dermis consisting of NHDFs only (3D-fibroblast dermis). However, the effect of the 3D-fibroblast dermis on the formation of functional epidermal TJs is unknown. In this study, we investigated the effect of the 3D-fibroblast dermis on the expression of TJ-related proteins and TJ function in LbL-3D Skin. We demonstrated that the 3D-fibroblast dermis affects the long-term expression of TJ-related proteins and the formation of TJ with barrier function in the epidermis. These results show that the 3D-fibroblast dermis in LbL-3D Skin contributes to the formation and maintenance of functional TJs as in native human skin by direct contact with KCs.
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Affiliation(s)
- Masato Murakami
- Department of Frontier Biosciences, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takami Akagi
- Department of Frontier Biosciences, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yumi Sasano
- Department of Frontier Biosciences, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan.,Pharma-Medicals Division, Life & Healthcare Products Department, Nagase & Co., Ltd., 2-2-3 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan
| | - Mitsuru Akashi
- Department of Frontier Biosciences, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan
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Mizutani Y, Takagi N, Nagata H, Inoue S. Interferon-γ downregulates tight junction function, which is rescued by interleukin-17A. Exp Dermatol 2021; 30:1754-1763. [PMID: 34197663 PMCID: PMC9290956 DOI: 10.1111/exd.14425] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 05/30/2021] [Accepted: 06/29/2021] [Indexed: 12/17/2022]
Abstract
Although atopic dermatitis (AD) has been reported to be a typical type 2 immune response disease, it is also an inflammatory skin disease that involves cytokines, such as Th1, Th17 and Th22. However, little is known about the mechanism by which the candidate cytokines, alone or in combination, are involved in AD pathology. Differences in cytokine balance, which contribute to the complexity of AD pathology, may influence the stratum corneum barrier function through tight junction (TJ) functional stability and contribute to disease severity. To confirm the regulatory mechanism of TJ protein expression in AD, we investigated the Th1 and Th17 pathways, which are the initiation factors of chronic AD pathology. We examined the effects of these cytokines on TJ protein expression in normal human epidermal keratinocytes in vitro, and also examined their function in a human skin equivalent model. We observed a time‐ and dose‐dependent inhibitory effect of IFN‐γ on claudin‐1 expression via the IFN‐γ receptor/JAK/STAT signalling pathway. IFN‐γ impaired TJ function in a human skin equivalent model. Moreover, we investigated co‐stimulation with IL‐17A, which is highly expressed in AD skin lesions and found that IL‐17A restores IFN‐γ‐induced TJ dysfunction. This restoration of TJ function was mediated by atypical protein kinase C zeta activation without recovery of TJ protein expression. These results are informative for personalized AD treatment via systemic therapies using anti‐cytokine antibodies and/or JAK inhibitors.
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Affiliation(s)
- Yukiko Mizutani
- Department of Cosmetic Health Science, Gifu Pharmaceutical University, Gifu, Japan
| | - Nao Takagi
- Department of Cosmetic Health Science, Gifu Pharmaceutical University, Gifu, Japan
| | - Haruna Nagata
- Department of Cosmetic Health Science, Gifu Pharmaceutical University, Gifu, Japan
| | - Shintaro Inoue
- Department of Cosmetic Health Science, Gifu Pharmaceutical University, Gifu, Japan
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