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García-Patiño MG, Marcial-Medina MC, Ruiz-Medina BE, Licona-Limón P. IL-17 in skin infections and homeostasis. Clin Immunol 2024; 267:110352. [PMID: 39218195 DOI: 10.1016/j.clim.2024.110352] [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: 05/10/2024] [Revised: 08/13/2024] [Accepted: 08/27/2024] [Indexed: 09/04/2024]
Abstract
Interleukin (IL) 17 is a proinflammatory cytokine belonging to a structurally related group of cytokines known as the IL-17 family. It has been profoundly studied for its contribution to the pathology of autoimmune diseases. However, it also plays an important role in homeostasis and the defense against extracellular bacteria and fungi. IL-17 is important for epithelial barriers, including the skin, where some of its cellular targets reside. Most of the research work on IL-17 has focused on its effects in the skin within the context of autoimmune diseases or sterile inflammation, despite also having impact on other skin conditions. In recent years, studies on the role of IL-17 in the defense against skin pathogens and in the maintenance of skin homeostasis mediated by the microbiota have grown in importance. Here we review and discuss the cumulative evidence regarding the main contribution of IL-17 in the maintenance of skin integrity as well as its protective or pathogenic effects during some skin infections.
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Affiliation(s)
- M G García-Patiño
- Departamento de Biología Celular y del Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - M C Marcial-Medina
- Departamento de Biología Celular y del Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - B E Ruiz-Medina
- Departamento de Biología Celular y del Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - P Licona-Limón
- Departamento de Biología Celular y del Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico.
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2
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Li X, An T, Yang Y, Xu Z, Chen S, Yi Z, Deng C, Zhou F, Man Y, Hu C. TLR9 activation in large wound induces tissue repair and hair follicle regeneration via γδT cells. Cell Death Dis 2024; 15:598. [PMID: 39153998 PMCID: PMC11330466 DOI: 10.1038/s41419-024-06994-y] [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: 05/03/2024] [Revised: 08/07/2024] [Accepted: 08/12/2024] [Indexed: 08/19/2024]
Abstract
The mechanisms underlying tissue repair in response to damage have been one of main subjects of investigation. Here we leverage the wound-induced hair neogenesis (WIHN) models in adult mice to explore the correlation between degree of damage and the healing process and outcome. The multimodal analysis, in combination with single-cell RNA sequencing help to explore the difference in wounds of gentle and heavy damage degrees, identifying the potential role of toll-like receptor 9 (TLR9) in sensing the injury and regulating the immune reaction by promoting the migration of γδT cells. The TLR9 deficient mice or wounds injected with TLR9 antagonist have greatly impaired healing and lower WIHN levels. Inhibiting the migration of γδT cells or knockout of γδT cells also suppress the wound healing and regeneration, which can't be rescued by TLR9agonist. Finally, the amphiregulin (AREG) is shown as one of most important effectors secreted by γδT cells and keratinocytes both in silicon or in the laboratory, whose expression influences WIHN levels and the expression of stem cell markers. In total, our findings reveal a previously unrecognized role for TLR9 in sensing skin injury and influencing the tissue repair and regeneration by modulation of the migration of γδT cells, and identify the TLR9-γδT cells-areg axis as new potential targets for enhancing tissue regeneration.
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Affiliation(s)
- Xinhui Li
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Tiantian An
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Yang Yang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Zhaoyu Xu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Shuaidong Chen
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Zumu Yi
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Chen Deng
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Feng Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Yi Man
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China.
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - Chen Hu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China.
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China.
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3
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Zeng J, Pan Y, Chaker SC, Torres-Guzman R, Lineaweaver WC, Qi F. Neural and Inflammatory Interactions in Wound Healing. Ann Plast Surg 2024; 93:S91-S97. [PMID: 39101856 DOI: 10.1097/sap.0000000000003933] [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: 08/06/2024]
Abstract
ABSTRACT The skin is an intricate network of both neurons and immunocytes, where emerging evidence has indicated that the regulation of neural-inflammatory processes may play a crucial role in mediating wound healing. Disease associated abnormal immunological dysfunction and peripheral neuropathy are implicated in the pathogenesis of wound healing impairment. However, the mechanisms through which neural-inflammatory interactions modulate wound healing remain ambiguous. Understanding the underlying mechanisms may provide novel insights to develop therapeutic devices, which could manipulate neural-inflammatory crosstalk to aid wound healing. This review aims to comprehensively illustrate the neural-inflammatory interactions during different stages of the repair process. Numerous mediators including neuropeptides secreted by the sensory and autonomic nerve fibers and cytokines produced by immunocytes play an essential part during the distinct phases of wound healing.
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Affiliation(s)
- Junhao Zeng
- From the Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yuyan Pan
- From the Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Sara C Chaker
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Ricardo Torres-Guzman
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - William C Lineaweaver
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Fazhi Qi
- From the Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
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4
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Manzo Margiotta F, Michelucci A, Fidanzi C, Granieri G, Salvia G, Bevilacqua M, Janowska A, Dini V, Romanelli M. Monoclonal Antibodies in the Management of Inflammation in Wound Healing: An Updated Literature Review. J Clin Med 2024; 13:4089. [PMID: 39064129 PMCID: PMC11278249 DOI: 10.3390/jcm13144089] [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: 05/25/2024] [Revised: 07/01/2024] [Accepted: 07/03/2024] [Indexed: 07/28/2024] Open
Abstract
Chronic wounds pose a significant clinical challenge due to their complex pathophysiology and the burden of long-term management. Monoclonal antibodies (mAbs) are emerging as a novel therapeutic option in managing difficult wounds, although comprehensive data on their use in wound care are lacking. This study aimed to explore existing scientific knowledge of mAbs in treating chronic wounds based on a rationale of direct inhibition of the main molecules involved in the underlying inflammatory pathophysiology. We performed a literature review excluding primary inflammatory conditions with potential ulcerative outcomes (e.g., hidradenitis suppurativa). mAbs were effective in treating wounds from 16 different etiologies. The most commonly treated conditions were pyoderma gangrenosum (treated with 12 different mAbs), lipoid necrobiosis, and cutaneous vasculitis (each treated with 3 different mAbs). Fourteen mAbs were analyzed in total. Rituximab was effective in 43.75% of cases (7/16 diseases), followed by tocilizumab (25%, 4/16 diseases), and both etanercept and adalimumab (18.75%, 3/16 conditions each). mAbs offer therapeutic potential for chronic wounds unresponsive to standard treatments. However, due to the complex molecular nature of wound healing, no single target molecule can be identified. Therefore, the use of mAbs should be considered as a translational approach for limited cases of multi-resistant conditions.
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Affiliation(s)
- Flavia Manzo Margiotta
- Department of Dermatology, University of Pisa, 56126 Pisa, Italy; (F.M.M.); (A.M.); (G.G.); (G.S.); (M.B.); (A.J.); (V.D.)
- Interdisciplinary Center of Health Science, Sant’Anna School of Advanced Studies of Pisa, 56127 Pisa, Italy
| | - Alessandra Michelucci
- Department of Dermatology, University of Pisa, 56126 Pisa, Italy; (F.M.M.); (A.M.); (G.G.); (G.S.); (M.B.); (A.J.); (V.D.)
- Interdisciplinary Center of Health Science, Sant’Anna School of Advanced Studies of Pisa, 56127 Pisa, Italy
| | | | - Giammarco Granieri
- Department of Dermatology, University of Pisa, 56126 Pisa, Italy; (F.M.M.); (A.M.); (G.G.); (G.S.); (M.B.); (A.J.); (V.D.)
| | - Giorgia Salvia
- Department of Dermatology, University of Pisa, 56126 Pisa, Italy; (F.M.M.); (A.M.); (G.G.); (G.S.); (M.B.); (A.J.); (V.D.)
| | - Matteo Bevilacqua
- Department of Dermatology, University of Pisa, 56126 Pisa, Italy; (F.M.M.); (A.M.); (G.G.); (G.S.); (M.B.); (A.J.); (V.D.)
| | - Agata Janowska
- Department of Dermatology, University of Pisa, 56126 Pisa, Italy; (F.M.M.); (A.M.); (G.G.); (G.S.); (M.B.); (A.J.); (V.D.)
| | - Valentina Dini
- Department of Dermatology, University of Pisa, 56126 Pisa, Italy; (F.M.M.); (A.M.); (G.G.); (G.S.); (M.B.); (A.J.); (V.D.)
| | - Marco Romanelli
- Department of Dermatology, University of Pisa, 56126 Pisa, Italy; (F.M.M.); (A.M.); (G.G.); (G.S.); (M.B.); (A.J.); (V.D.)
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5
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Liu J, He Q, Guo G, Zhai C. Analysis of risk factors related to chronic non-healing wound infection and the construction of a clinical prediction model. Exp Dermatol 2024; 33:e15102. [PMID: 38973268 DOI: 10.1111/exd.15102] [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: 01/22/2024] [Revised: 04/28/2024] [Accepted: 05/07/2024] [Indexed: 07/09/2024]
Abstract
This study is aimed to analyse the risk factors associated with chronic non-healing wound infections, establish a clinical prediction model, and validate its performance. Clinical data were retrospectively collected from 260 patients with chronic non-healing wounds treated in the plastic surgery ward of Shanxi Provincial People's Hospital between January 2022 and December 2023 who met the inclusion criteria. Risk factors were analysed, and a clinical prediction model was constructed using both single and multifactor logistic regression analyses to determine the factors associated with chronic non-healing wound infections. The model's discrimination and calibration were assessed via the concordance index (C-index), receiver operating characteristic (ROC) curve and calibration curve. Multivariate logistic regression analysis identified several independent risk factors for chronic non-healing wound infection: long-term smoking (odds ratio [OR]: 4.122, 95% CI: 3.412-5.312, p < 0.05), history of diabetes (OR: 3.213, 95% CI: 2.867-4.521, p < 0.05), elevated C-reactive protein (OR: 2.981, 95% CI: 2.312-3.579, p < 0.05), elevated procalcitonin (OR: 2.253, 95% CI: 1.893-3.412, p < 0.05) and reduced albumin (OR: 1.892, 95% CI: 1.322-3.112, p < 0.05). The clinical prediction model's C-index was 0.762, with the corrected C-index from internal validation using the bootstrap method being 0.747. The ROC curve indicated an area under the curve (AUC) of 0.762 (95% CI: 0.702-0.822). Both the AUC and C-indexes ranged between 0.7 and 0.9, suggesting moderate-to-good predictive accuracy. The calibration chart demonstrated a good fit between the model's calibration curve and the ideal curve. Long-term smoking, diabetes, elevated C-reactive protein, elevated procalcitonin and reduced albumin are confirmed as independent risk factors for bacterial infection in patients with chronic non-healing wounds. The clinical prediction model based on these factors shows robust performance and substantial predictive value.
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Affiliation(s)
- Jing Liu
- Department of the Comprehensive Surgery, Shanxi Provincial People's Hospital, Taiyuan, Shanxi Province, China
| | - Qiang He
- The Colorectal and Anal Surgery, Shanxi Provincial People's Hospital, Taiyuan, Shanxi Province, China
| | - Gaijuan Guo
- Fenyang City People's Hospital, Fenyang, Shanxi Province, China
| | - Chunbao Zhai
- The Colorectal and Anal Surgery, Shanxi Provincial People's Hospital, Taiyuan, Shanxi Province, China
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6
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Lawler W, Castellanos T, Engel E, Alvizo CR, Kasler A, Bshara-Corson S, Jameson JM. Impact of Obesity on the CCR6-CCL20 Axis in Epidermal γδ T Cells and IL-17A Production in Murine Wound Healing and Psoriasis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.09.588780. [PMID: 38645150 PMCID: PMC11030331 DOI: 10.1101/2024.04.09.588780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Obesity is associated with comorbidities including type 2 diabetes, chronic nonhealing wounds and psoriasis. Normally skin homeostasis and repair is regulated through the production of cytokines and growth factors derived from skin-resident cells including epidermal γδ T cells. However epidermal γδ T cells exhibit reduced proliferation and defective growth factor and cytokine production during obesity and type 2 diabetes. One of the genes modulated in epidermal γδ T cells during obesity and type 2 diabetes is CCR6, which is the receptor for CCL20. CCL20 is elevated in the skin during obesity and type 2 diabetes. Here we identify a subset of murine epidermal γδ T cells that expresses CCR6 in response to activation in vitro and post-wounding or psoriasis induction with imiquimod in vivo. We show that CCL20 stimulates epidermal γδ T cells to produce IL-17 suggesting CCR6 regulates the IL-17 axis as in dermal γδ T cells. Further, epidermal γδ T cells upregulate CCR6 and produce IL-17 during murine models of wound repair and psoriasis. Obesity increases CCR6 and IL-17 expression by epidermal γδ T cells during wound repair but has less of an effect during psoriasis. These findings have novel implications for the regulation of a specific population of IL-17-producing epidermal γδ T cells during skin damage and inflammation.
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Affiliation(s)
- William Lawler
- Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096
| | - Tanya Castellanos
- Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096
| | - Emma Engel
- Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096
| | - Cristian R Alvizo
- Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096
| | - Antolette Kasler
- Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096
| | - Savannah Bshara-Corson
- Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096
| | - Julie M Jameson
- Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096
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7
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Reider IE, Lin E, Krouse TE, Parekh NJ, Nelson AM, Norbury CC. γδ T Cells Mediate a Requisite Portion of a Wound Healing Response Triggered by Cutaneous Poxvirus Infection. Viruses 2024; 16:425. [PMID: 38543790 PMCID: PMC10975054 DOI: 10.3390/v16030425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/07/2024] [Accepted: 03/08/2024] [Indexed: 04/01/2024] Open
Abstract
Infection at barrier sites, e.g., skin, activates local immune defenses that limit pathogen spread, while preserving tissue integrity. Phenotypically distinct γδ T cell populations reside in skin, where they shape immunity to cutaneous infection prior to onset of an adaptive immune response by conventional αβ CD4+ (TCD4+) and CD8+ (TCD8+) T cells. To examine the mechanisms used by γδ T cells to control cutaneous virus replication and tissue pathology, we examined γδ T cells after infection with vaccinia virus (VACV). Resident γδ T cells expanded and combined with recruited γδ T cells to control pathology after VACV infection. However, γδ T cells did not play a role in control of local virus replication or blockade of systemic virus spread. We identified a unique wound healing signature that has features common to, but also features that antagonize, the sterile cutaneous wound healing response. Tissue repair generally occurs after clearance of a pathogen, but viral wound healing started prior to the peak of virus replication in the skin. γδ T cells contributed to wound healing through induction of multiple cytokines/growth factors required for efficient wound closure. Therefore, γδ T cells modulate the wound healing response following cutaneous virus infection, maintaining skin barrier function to prevent secondary bacterial infection.
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Affiliation(s)
- Irene E. Reider
- Department of Microbiology & Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Eugene Lin
- Department of Microbiology & Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Tracy E. Krouse
- Department of Microbiology & Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Nikhil J. Parekh
- Department of Microbiology & Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Amanda M. Nelson
- Department of Dermatology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Christopher C. Norbury
- Department of Microbiology & Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
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8
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Ibusuki A, Kawai K, Nitahara-Takeuchi A, Argüello RJ, Kanekura T. TCR signaling and cellular metabolism regulate the capacity of murine epidermal γδ T cells to rapidly produce IL-13 but not IFN-γ. Front Immunol 2024; 15:1361139. [PMID: 38482017 PMCID: PMC10933099 DOI: 10.3389/fimmu.2024.1361139] [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: 12/25/2023] [Accepted: 02/08/2024] [Indexed: 04/17/2024] Open
Abstract
Resident epidermal T cells of murine skin, called dendritic epidermal T cells (DETCs), express an invariant γδ TCR that recognizes an unidentified self-ligand expressed on epidermal keratinocytes. Although their fetal thymic precursors are preprogrammed to produce IFN-γ, DETCs in the adult epidermis rapidly produce IL-13 but not IFN-γ early after activation. Here, we show that preprogrammed IFN-γ-producing DETC precursors differentiate into rapid IL-13 producers in the perinatal epidermis. The addition of various inhibitors of signaling pathways downstream of TCR to the in vitro differentiation model of neonatal DETCs revealed that TCR signaling through the p38 MAPK pathway is essential for the functional differentiation of neonatal DETCs. Constitutive TCR signaling at steady state was also shown to be needed for the maintenance of the rapid IL-13-producing capacity of adult DETCs because in vivo treatment with the p38 MAPK inhibitor decreased adult DETCs with the rapid IL-13-producing capacity. Adult DETCs under steady-state conditions had lower glycolytic capacity than proliferating neonatal DETCs. TCR stimulation of adult DETCs induced high glycolytic capacity and IFN-γ production during the late phase of activation. Inhibition of glycolysis decreased IFN-γ but not IL-13 production by adult DETCs during the late phase of activation. These results demonstrate that TCR signaling promotes the differentiation of IL-13-producing DETCs in the perinatal epidermis and is needed for maintaining the rapid IL-13-producing capacity of adult DETCs. The low glycolytic capacity of adult DETCs at steady state also regulates the rapid IL-13 response and delayed IFN-γ production after activation.
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Affiliation(s)
- Atsuko Ibusuki
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Kazuhiro Kawai
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
- Department of Dermatology, Kido Hospital, Niigata, Japan
| | - Ayano Nitahara-Takeuchi
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Rafael J. Argüello
- Aix Marseille Université, CNRS, INSERM, CIML, Centre d’Immunologie de Marseille-Luminy, Marseille, France
| | - Takuro Kanekura
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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9
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Rhoiney ML, Alvizo CR, Jameson JM. Skin Homeostasis and Repair: A T Lymphocyte Perspective. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:1266-1275. [PMID: 37844280 DOI: 10.4049/jimmunol.2300153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 06/22/2023] [Indexed: 10/18/2023]
Abstract
Chronic, nonhealing wounds remain a clinical challenge and a significant burden for the healthcare system. Skin-resident and infiltrating T cells that recognize pathogens, microbiota, or self-antigens participate in wound healing. A precise balance between proinflammatory T cells and regulatory T cells is required for the stages of wound repair to proceed efficiently. When diseases such as diabetes disrupt the skin microenvironment, T cell activation and function are altered, and wound repair is hindered. Recent studies have used cutting-edge technology to further define the cellular makeup of the skin prior to and during tissue repair. In this review, we discuss key advances that highlight mechanisms used by T cell subsets to populate the epidermis and dermis, maintain skin homeostasis, and regulate wound repair. Advances in our understanding of how skin cells communicate in the skin pave the way for therapeutics that modulate regulatory versus effector functions to improve nonhealing wound treatment.
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Affiliation(s)
- Mikaela L Rhoiney
- Department of Biological Sciences, California State University San Marcos, San Marcos, CA
| | - Cristian R Alvizo
- Department of Biological Sciences, California State University San Marcos, San Marcos, CA
| | - Julie M Jameson
- Department of Biological Sciences, California State University San Marcos, San Marcos, CA
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10
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Huangfu L, Li R, Huang Y, Wang S. The IL-17 family in diseases: from bench to bedside. Signal Transduct Target Ther 2023; 8:402. [PMID: 37816755 PMCID: PMC10564932 DOI: 10.1038/s41392-023-01620-3] [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: 01/10/2023] [Revised: 06/16/2023] [Accepted: 08/22/2023] [Indexed: 10/12/2023] Open
Abstract
The interleukin-17 (IL-17) family comprises six members (IL-17A-17F), and recently, all of its related receptors have been discovered. IL-17 was first discovered approximately 30 years ago. Members of this family have various biological functions, including driving an inflammatory cascade during infections and autoimmune diseases, as well as boosting protective immunity against various pathogens. IL-17 is a highly versatile proinflammatory cytokine necessary for vital processes including host immune defenses, tissue repair, inflammatory disease pathogenesis, and cancer progression. However, how IL-17 performs these functions remains controversial. The multifunctional properties of IL-17 have attracted research interest, and emerging data have gradually improved our understanding of the IL-17 signaling pathway. However, a comprehensive review is required to understand its role in both host defense functions and pathogenesis in the body. This review can aid researchers in better understanding the mechanisms underlying IL-17's roles in vivo and provide a theoretical basis for future studies aiming to regulate IL-17 expression and function. This review discusses recent progress in understanding the IL-17 signaling pathway and its physiological roles. In addition, we present the mechanism underlying IL-17's role in various pathologies, particularly, in IL-17-induced systemic lupus erythematosus and IL-17-related tumor cell transformation and metastasis. In addition, we have briefly discussed promising developments in the diagnosis and treatment of autoimmune diseases and tumors.
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Affiliation(s)
- Longjie Huangfu
- School of Stomatology, Harbin Medical University, Harbin, 150001, P. R. China
| | - Ruiying Li
- Department of Oral Pathology, School of Stomatology, Hainan Medical University, Haikou, 571199, P. R. China
| | - Yamei Huang
- Department of Oral Pathology, School of Stomatology, Hainan Medical University, Haikou, 571199, P. R. China
| | - Shan Wang
- Department of Oral Pathology, School of Stomatology, Hainan Medical University, Haikou, 571199, P. R. China.
- Department of Stomatology, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570216, P. R. China.
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11
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Ou L, Tan X, Qiao S, Wu J, Su Y, Xie W, Jin N, He J, Luo R, Lai X, Liu W, Zhang Y, Zhao F, Liu J, Kang Y, Shao L. Graphene-Based Material-Mediated Immunomodulation in Tissue Engineering and Regeneration: Mechanism and Significance. ACS NANO 2023; 17:18669-18687. [PMID: 37768738 DOI: 10.1021/acsnano.3c03857] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
Tissue engineering and regenerative medicine hold promise for improving or even restoring the function of damaged organs. Graphene-based materials (GBMs) have become a key player in biomaterials applied to tissue engineering and regenerative medicine. A series of cellular and molecular events, which affect the outcome of tissue regeneration, occur after GBMs are implanted into the body. The immunomodulatory function of GBMs is considered to be a key factor influencing tissue regeneration. This review introduces the applications of GBMs in bone, neural, skin, and cardiovascular tissue engineering, emphasizing that the immunomodulatory functions of GBMs significantly improve tissue regeneration. This review focuses on summarizing and discussing the mechanisms by which GBMs mediate the sequential regulation of the innate immune cell inflammatory response. During the process of tissue healing, multiple immune responses, such as the inflammatory response, foreign body reaction, tissue fibrosis, and biodegradation of GBMs, are interrelated and influential. We discuss the regulation of these immune responses by GBMs, as well as the immune cells and related immunomodulatory mechanisms involved. Finally, we summarize the limitations in the immunomodulatory strategies of GBMs and ideas for optimizing GBM applications in tissue engineering. This review demonstrates the significance and related mechanism of the immunomodulatory function of GBM application in tissue engineering; more importantly, it contributes insights into the design of GBMs to enhance wound healing and tissue regeneration in tissue engineering.
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Affiliation(s)
- Lingling Ou
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Xiner Tan
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Shijia Qiao
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Junrong Wu
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yuan Su
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
- Stomatology Center, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan 528399, China
| | - Wenqiang Xie
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Nianqiang Jin
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Jiankang He
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Ruhui Luo
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Xuan Lai
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Wenjing Liu
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yanli Zhang
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Fujian Zhao
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Jia Liu
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yiyuan Kang
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Longquan Shao
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
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12
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Chen XY, Wang ZY, Zhou Y, Ye LR, Man XY. Keratinoctye-neuro-immune-units (KNICUs): collaborative impact on the initiation and maintenance of psoriasis. Front Med (Lausanne) 2023; 10:1191057. [PMID: 37387780 PMCID: PMC10303941 DOI: 10.3389/fmed.2023.1191057] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/15/2023] [Indexed: 07/01/2023] Open
Abstract
The skin is the outermost barrier that separates the human body from the external environment. In psoriasis, immune cells reside within or infiltrate the epidermis to form the epidermal (epithelial) immunological microenvironment (EIME) and engage in complex interactions with keratinocytes, nerves, and microbiota. The proposed hypothesis is that psoriasis is a chronic inflammatory disease mainly mediated by a specific inflammatory environment composed of keratinocyte-neuro-immune cell units (KNICUs). These KNICUs arise from the interaction between activated epidermal keratinocytes, nerves, immune cells, and the skin microbiota, forming a complex interaction framework. Multiple units gather to complete the circulatory and amplified loops, consequently serving as a group army to initiate and maintain psoriasis.
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13
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Kidzeru EB, Lebeko M, Sharma JR, Nkengazong L, Adeola HA, Ndlovu H, P Khumalo N, Bayat A. Immune cells and associated molecular markers in dermal fibrosis with focus on raised cutaneous scars. Exp Dermatol 2023; 32:570-587. [PMID: 36562321 PMCID: PMC10947010 DOI: 10.1111/exd.14734] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 08/04/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
Raised dermal scars including hypertrophic, and keloid scars as well as scalp-associated fibrosing Folliculitis Keloidalis Nuchae (FKN) are a group of fibrotic raised dermal lesions that mostly occur following cutaneous injury. They are characterized by increased extracellular matrix (ECM) deposition, primarily excessive collagen type 1 production by hyperproliferative fibroblasts. The extent of ECM deposition is thought to be proportional to the severity of local skin inflammation leading to excessive fibrosis of the dermis. Due to a lack of suitable study models, therapy for raised dermal scars remains ill-defined. Immune cells and their associated markers have been strongly associated with dermal fibrosis. Therefore, modulation of the immune system and use of anti-inflammatory cytokines are of potential interest in the management of dermal fibrosis. In this review, we will discuss the importance of immune factors in the pathogenesis of raised dermal scarring. The aim here is to provide an up-to-date comprehensive review of the literature, from PubMed, Scopus, and other relevant search engines in order to describe the known immunological factors associated with raised dermal scarring. The importance of immune cells including mast cells, macrophages, lymphocytes, and relevant molecules such as cytokines, chemokines, and growth factors, antibodies, transcription factors, and other immune-associated molecules as well as tissue lymphoid aggregates identified within raised dermal scars will be presented. A growing body of evidence points to a shift from proinflammatory Th1 response to regulatory/anti-inflammatory Th2 response being associated with the development of fibrogenesis in raised dermal scarring. In summary, a better understanding of immune cells and associated molecular markers in dermal fibrosis will likely enable future development of potential immune-modulated therapeutic, diagnostic, and theranostic targets in raised dermal scarring.
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Affiliation(s)
- Elvis Banboye Kidzeru
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
- Microbiology, Infectious Diseases, and Immunology Laboratory (LAMMII)Centre for Research on Health and Priority Pathologies (CRSPP)Institute of Medical Research and Medicinal Plant Studies (IMPM), Ministry of Scientific Research and InnovationYaoundéCameroon
| | - Maribanyana Lebeko
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
- Present address:
Cape Biologix Technologies (PTY, LTD)Cape TownSouth Africa
| | - Jyoti Rajan Sharma
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
- Biomedical Research and Innovation Platform, South African Medical Research Council, Francie van Zijl Drive, Parow ValleyCape TownSouth Africa
- Present address:
Biomedical Research and Innovation Platform, South African Medical Research Council, Francie van Zijl Drive, Parow ValleyCape TownSouth Africa
| | - Lucia Nkengazong
- Microbiology, Infectious Diseases, and Immunology Laboratory (LAMMII)Centre for Research on Health and Priority Pathologies (CRSPP)Institute of Medical Research and Medicinal Plant Studies (IMPM), Ministry of Scientific Research and InnovationYaoundéCameroon
| | - Henry Ademola Adeola
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
| | - Hlumani Ndlovu
- Department of Integrative Biomedical SciencesUniversity of Cape TownCape TownSouth Africa
| | - Nonhlanhla P Khumalo
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
| | - Ardeshir Bayat
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
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14
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Linz MS, Mattappallil A, Finkel D, Parker D. Clinical Impact of Staphylococcus aureus Skin and Soft Tissue Infections. Antibiotics (Basel) 2023; 12:557. [PMID: 36978425 PMCID: PMC10044708 DOI: 10.3390/antibiotics12030557] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/03/2023] [Accepted: 03/09/2023] [Indexed: 03/14/2023] Open
Abstract
The pathogenic bacterium Staphylococcus aureus is the most common pathogen isolated in skin-and-soft-tissue infections (SSTIs) in the United States. Most S. aureus SSTIs are caused by the epidemic clone USA300 in the USA. These infections can be serious; in 2019, SSTIs with S. aureus were associated with an all-cause, age-standardized mortality rate of 0.5 globally. Clinical presentations of S. aureus SSTIs vary from superficial infections with local symptoms to monomicrobial necrotizing fasciitis, which can cause systemic manifestations and may lead to serious complications or death. In order to cause skin infections, S. aureus employs a host of virulence factors including cytolytic proteins, superantigenic factors, cell wall-anchored proteins, and molecules used for immune evasion. The immune response to S. aureus SSTIs involves initial responders such as keratinocytes and neutrophils, which are supported by dendritic cells and T-lymphocytes later during infection. Treatment for S. aureus SSTIs is usually oral therapy, with parenteral therapy reserved for severe presentations; it ranges from cephalosporins and penicillin agents such as oxacillin, which is generally used for methicillin-sensitive S. aureus (MSSA), to vancomycin for methicillin-resistant S. aureus (MRSA). Treatment challenges include adverse effects, risk for Clostridioides difficile infection, and potential for antibiotic resistance.
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Affiliation(s)
- Matthew S. Linz
- Department of Pathology, Immunology and Laboratory Medicine, Center for Immunity and Inflammation, Rutgers New Jersey Medical School, Newark, NJ 07103, USA
| | - Arun Mattappallil
- Department of Pharmaceutical Services, University Hospital, Newark, NJ 07103, USA
| | - Diana Finkel
- Division of Infectious Diseases, Department of Medicine, Rutgers New Jersey Medical School, Newark, NJ 07103, USA
| | - Dane Parker
- Department of Pathology, Immunology and Laboratory Medicine, Center for Immunity and Inflammation, Rutgers New Jersey Medical School, Newark, NJ 07103, USA
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15
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Chen Y, Du J, Liu Y, Luo Z, Guo L, Xu J, Jia L, Liu Y. γδT cells in oral tissue immune surveillance and pathology. Front Immunol 2023; 13:1050030. [PMID: 36703983 PMCID: PMC9871479 DOI: 10.3389/fimmu.2022.1050030] [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: 09/21/2022] [Accepted: 12/21/2022] [Indexed: 01/12/2023] Open
Abstract
The oral mucosa's immune system is composed of tissue-resident and specifically recruited leukocytes that could effectively tolerate a wide range of microbial and mechanical assaults. Shortly after CD4+ helper T cells (TH17 cells) that produce interleukin 17 (IL-17) were identified, it was discovered that γδT cells could also induce substantial levels of this pro-inflammatory cytokine. In the past decades, it has become clear that due to a complicated thymic program of development, γδT cells frequently serve as the primary sources of IL-17 in numerous models of inflammatory diseases while also assisting in the maintenance of tissue homeostasis in the skin and intestine. But it wasn't until recently that we took thorough insight into the complex features of γδT cells in the oral mucosa. Most gingival intraepithelial γδT cells reside in the junctional epithelium adjacent to the dental biofilm, suggesting their potential role in regulating oral microbiota. However, inconsistent results have been published in this regard. Similarly, recent findings showed contradictory data about the role of γδT lymphocytes in experimental periodontitis based on different models. In addition, conflicting findings were presented in terms of alveolar bone physiology and pathology underlying the oral mucosa. This review provided an overview of current knowledge and viewpoints regarding the complex roles played by oral-resident γδT cells in host-microbiota interactions, gingivitis and periodontitis, bone physiology and pathology.
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Affiliation(s)
- Yilong Chen
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, School of Stomatology, Capital Medical University, Beijing, China,Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Juan Du
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, School of Stomatology, Capital Medical University, Beijing, China,Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Yitong Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, School of Stomatology, Capital Medical University, Beijing, China,Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Zhenhua Luo
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, School of Stomatology, Capital Medical University, Beijing, China,Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Lijia Guo
- Department of Orthodontics School of Stomatology, Capital Medical University, Beijing, China
| | - Junji Xu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, School of Stomatology, Capital Medical University, Beijing, China,Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Lu Jia
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, School of Stomatology, Capital Medical University, Beijing, China,Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China,*Correspondence: Lu Jia, ; Yi Liu,
| | - Yi Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, School of Stomatology, Capital Medical University, Beijing, China,Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China,*Correspondence: Lu Jia, ; Yi Liu,
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16
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du Halgouet A, Darbois A, Alkobtawi M, Mestdagh M, Alphonse A, Premel V, Yvorra T, Colombeau L, Rodriguez R, Zaiss D, El Morr Y, Bugaut H, Legoux F, Perrin L, Aractingi S, Golub R, Lantz O, Salou M. Role of MR1-driven signals and amphiregulin on the recruitment and repair function of MAIT cells during skin wound healing. Immunity 2023; 56:78-92.e6. [PMID: 36630919 PMCID: PMC9839364 DOI: 10.1016/j.immuni.2022.12.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 09/02/2022] [Accepted: 12/06/2022] [Indexed: 01/11/2023]
Abstract
Tissue repair processes maintain proper organ function following mechanical or infection-related damage. In addition to antibacterial properties, mucosal associated invariant T (MAIT) cells express a tissue repair transcriptomic program and promote skin wound healing when expanded. Herein, we use a human-like mouse model of full-thickness skin excision to assess the underlying mechanisms of MAIT cell tissue repair function. Single-cell RNA sequencing analysis suggested that skin MAIT cells already express a repair program at steady state. Following skin excision, MAIT cells promoted keratinocyte proliferation, thereby accelerating healing. Using skin grafts, parabiosis, and adoptive transfer experiments, we show that MAIT cells migrated into the wound in a T cell receptor (TCR)-independent but CXCR6 chemokine receptor-dependent manner. Amphiregulin secreted by MAIT cells following excision promoted wound healing. Expression of the repair function was probably independent of sustained TCR stimulation. Overall, our study provides mechanistic insights into MAIT cell wound healing function in the skin.
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Affiliation(s)
| | - Aurélie Darbois
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Mansour Alkobtawi
- Cutaneous Biology, Institut Cochin, Inserm 1016, and Université de Paris Cité, 75014 Paris, France
| | - Martin Mestdagh
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Aurélia Alphonse
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Virginie Premel
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Thomas Yvorra
- CNRS UMR 3666, INSERM U1143, Chemical Biology of Cancer Laboratory, PSL University, Institut Curie, 75005 Paris, France
| | - Ludovic Colombeau
- CNRS UMR 3666, INSERM U1143, Chemical Biology of Cancer Laboratory, PSL University, Institut Curie, 75005 Paris, France
| | - Raphaël Rodriguez
- CNRS UMR 3666, INSERM U1143, Chemical Biology of Cancer Laboratory, PSL University, Institut Curie, 75005 Paris, France
| | - Dietmar Zaiss
- Department of Immune Medicine, University of Regensburg, Regensburg, Germany,Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Regensburg, Germany,Institute of Pathology, University Regensburg, Regensburg, Germany,Leibniz Institute for Immunotherapy (LIT), Regensburg, Germany
| | - Yara El Morr
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Hélène Bugaut
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - François Legoux
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Laetitia Perrin
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Selim Aractingi
- Cutaneous Biology, Institut Cochin, Inserm 1016, and Université de Paris Cité, 75014 Paris, France
| | - Rachel Golub
- Institut Pasteur, Université Paris Cité, INSERM U1223, 75015 Paris, France
| | - Olivier Lantz
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France; Laboratoire d'Immunologie Clinique, Institut Curie, 75005 Paris, France; Centre d'investigation Clinique en Biothérapie Gustave-Roussy Institut Curie (CIC-BT1428), Institut Curie, 75005 Paris, France.
| | - Marion Salou
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France.
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17
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Li Y, Wang J, Wang Y, He W, Zhang Y, Liu Y. IL-1β/NF-κB signaling inhibits IGF-1 production via let-7f-5p in dendritic epidermal T cells. J Leukoc Biol 2022; 112:1677-1690. [PMID: 36120949 DOI: 10.1002/jlb.3ma0322-171r] [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: 03/23/2022] [Revised: 07/28/2022] [Indexed: 01/04/2023] Open
Abstract
Dendritic epidermal T cells (DETCs) are the main source of insulin-like growth factor-1 (IGF-1) in epidermal tissue, which promote re-epithelialization and wound healing. In refractory wounds, IL-1β has been shown to activate NF-κB and suppress IGF-1 expression in DETCs. Nevertheless, the underlying mechanisms remain unclear. In this study, chromatin immunoprecipitation analysis revealed that IL-1β did not inhibit NF-κB binding to IGF-1 promoter, indicating that IL-1β/NF-κB may suppress IGF-1 expression by alternative mechanisms. MiRNAs negatively regulate gene expression predominantly by base pairing to the 3' untranslation region (UTR) of target mRNAs. Let-7f-5p, miR-1a-3p, and miR-98-5p have been identified as IGF-1-specific miRNAs that can bind directly to the 3'UTR of IGF-1 mRNA and dysregulate IGF-1 mRNA and protein levels. In IL-1β-treated epidermis around wounds or DETCs in vitro, NF-κB promoted the expression of let-7f-5p, and IGF-1 expression was impeded via NF-κB/let-7f-5p pathway. As pre-let-7f-5p, let-7f-1 is located in the 3'UTR of LOC118568094, and let-7f-2 is located in the intron of HUWE1. We discovered that NF-κB p65 bound to the promoters of LOC118568094 and HUWE1 to accelerate let-7f-5p expression, but NF-κB p65 did not affect the methylation levels of LOC118568094 and HUWE1 CpG islands. Injections of Let-7f-5p antagomir into IL-1β-treated and ischemic wound margins restored IGF-1 secretion in DETCs and promoted wound healing. In conclusion, we demonstrated that NF-κB signaling pathway activated by IL-1β could increase let-7f-5p expression to inhibit IGF-1 production in DETCs and delay wound healing. And let-7f-5p antagomir utilized in wound margin could effectively promote refractory wound healing.
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Affiliation(s)
- Yashu Li
- Department of Plastic and Reconstructive Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Juan Wang
- Clinical Skills Training Center and Department of General Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yangping Wang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Weifeng He
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yixin Zhang
- Department of Plastic and Reconstructive Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Liu
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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18
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Sim SL, Kumari S, Kaur S, Khosrotehrani K. Macrophages in Skin Wounds: Functions and Therapeutic Potential. Biomolecules 2022; 12:1659. [PMID: 36359009 PMCID: PMC9687369 DOI: 10.3390/biom12111659] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/04/2022] [Accepted: 11/05/2022] [Indexed: 08/29/2023] Open
Abstract
Macrophages regulate cutaneous wound healing by immune surveillance, tissue repair and remodelling. The depletion of dermal macrophages during the early and middle stages of wound healing has a detrimental impact on wound closure, characterised by reduced vessel density, fibroblast and myofibroblast proliferation, delayed re-epithelization and abated post-healing fibrosis and scar formation. However, in some animal species, oral mucosa and foetal life, cutaneous wounds can heal normally and remain scarless without any involvement of macrophages. These paradoxical observations have created much controversy on macrophages' indispensable role in skin wound healing. Advanced knowledge gained by characterising macrophage subsets, their plasticity in switching phenotypes and molecular drivers provides new insights into their functional importance during cutaneous wound healing. In this review, we highlight the recent findings on skin macrophage subsets, their functional role in adult cutaneous wound healing and the potential benefits of targeting them for therapeutic use.
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Affiliation(s)
- Seen Ling Sim
- The University of Queensland Diamantina Institute, Faculty of Medicine, Translational Research Institute, The University of Queensland, 37 Kent Street, Woolloongabba, QLD 4102, Australia
| | - Snehlata Kumari
- The University of Queensland Diamantina Institute, Faculty of Medicine, Translational Research Institute, The University of Queensland, 37 Kent Street, Woolloongabba, QLD 4102, Australia
| | - Simranpreet Kaur
- Mater Research Institute-UQ, Translational Research Institute, Brisbane, QLD 4102, Australia
| | - Kiarash Khosrotehrani
- The University of Queensland Diamantina Institute, Faculty of Medicine, Translational Research Institute, The University of Queensland, 37 Kent Street, Woolloongabba, QLD 4102, Australia
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19
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LeBlanc G, Kreissl F, Melamed J, Sobel AL, Constantinides MG. The role of unconventional T cells in maintaining tissue homeostasis. Semin Immunol 2022; 61-64:101656. [PMID: 36306662 PMCID: PMC9828956 DOI: 10.1016/j.smim.2022.101656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 09/01/2022] [Accepted: 09/21/2022] [Indexed: 01/12/2023]
Affiliation(s)
- Gabrielle LeBlanc
- Department of Immunology & Microbiology, Scripps Research, La Jolla, CA 92037, USA,These authors contributed equally
| | - Felix Kreissl
- Department of Immunology & Microbiology, Scripps Research, La Jolla, CA 92037, USA,These authors contributed equally
| | - Jonathan Melamed
- Department of Immunology & Microbiology, Scripps Research, La Jolla, CA 92037, USA,These authors contributed equally
| | - Adam L. Sobel
- Department of Immunology & Microbiology, Scripps Research, La Jolla, CA 92037, USA,These authors contributed equally
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20
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Shannon JL, Kirchner SJ, Zhang JY. Human Skin Explant Preparation and Culture. Bio Protoc 2022; 12:e4514. [PMID: 36248607 PMCID: PMC9516224 DOI: 10.21769/bioprotoc.4514] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 08/04/2022] [Accepted: 08/08/2022] [Indexed: 01/19/2023] Open
Abstract
The ex vivo experimentation with surgically discarded human skin represents a unique methodology amenable for mechanism and pharmacologic agent studies without the involvement of human subjects. Here, we describe a protocol that includes preparation, culture, and stimulation of human skin explants, and subsequent analyses by quantitative reverse transcription PCR and immunostaining. This protocol may also be applied for ex vivo studies of murine skin, reducing animal numbers and potentially harmful treatments. In our hands, this protocol has been used for wound healing, viral infection, and hair growth-related studies. Graphical abstract: Cartoon of explant skin culture. Skin explant sits on top of a gelatin surgical sponge saturated with culture medium at an air-liquid interface.
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Affiliation(s)
| | | | - Jennifer Y. Zhang
- Department of Dermatology, Duke University, Durham NC, USA
,
*For correspondence:
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21
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Simon DW, Raphael I, Johnson KM, Dixon CE, Vagni V, Janesko-Feldman K, Kochanek PM, Bayir H, Clark RS, McGeachy MJ. Endogenous Interleukin-17a Contributes to Normal Spatial Memory Retention but Does Not Affect Early Behavioral or Neuropathological Outcomes after Experimental Traumatic Brain Injury. Neurotrauma Rep 2022; 3:340-351. [PMID: 36204388 PMCID: PMC9531893 DOI: 10.1089/neur.2022.0017] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Interleukin-17 (IL-17) is a proinflammatory cytokine primarily secreted in the brain by inflammatory T lymphocytes and glial cells. IL-17+ T-helper (Th17) cells are increased in the ipsilateral hemisphere after experimental traumatic brain injury (TBI), and IL-17 levels are increased in serum and brain tissue. We hypothesized that il17a and related gene expression would be increased in brain tissue after TBI in mice and il17a-/- mice would demonstrate neuroprotection versus wild type. The controlled cortical impact (CCI) model of TBI in adult male C57BL6/J mice was used for all experiments. Data were analyzed by analysis of variance (ANOVA) or repeated-measures two-way ANOVA with the Bonferroni correction. A value of p < 0.05 determined significance. Expression of il17a was significantly reduced in the ipsilateral cortex and hippocampus by day 3 after TBI, and expression remained low at 28 days. There were no differences between il17a-/- and il17a+/+ mice in beam balance, Morris water maze performance, or lesion volume after CCI. Surprisingly, naïve il17a -/- mice performed significantly (p = 0.02) worse than naïve il17a+/+ mice on the probe trial. In conclusion, sustained depression of il17a gene expression was observed in brains after TBI in adult mice. Genetic knockout of IL-17 was not neuroprotective after TBI. IL-17a may be important for memory retention in naïve mice.
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Affiliation(s)
- Dennis W. Simon
- Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Children's Neuroscience Institute, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Itay Raphael
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Kendall M. Johnson
- Department of Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - C. Edward Dixon
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Vincent Vagni
- Department of Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Keri Janesko-Feldman
- Department of Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Patrick M. Kochanek
- Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Children's Neuroscience Institute, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Hülya Bayir
- Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Environmental and Occupational Health, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Children's Neuroscience Institute, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Robert S.B. Clark
- Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Clinical and Translational Science Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Children's Neuroscience Institute, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Mandy J. McGeachy
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
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22
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Lei V, Handfield C, Kwock JT, Kirchner SJ, Lee MJ, Coates M, Wang K, Han Q, Wang Z, Powers JG, Wolfe S, Corcoran DL, Fanelli B, Dadlani M, Ji RR, Zhang JY, MacLeod AS. Skin Injury Activates a Rapid TRPV1-Dependent Antiviral Protein Response. J Invest Dermatol 2022; 142:2249-2259.e9. [PMID: 35007556 PMCID: PMC9259761 DOI: 10.1016/j.jid.2021.11.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 11/19/2021] [Accepted: 11/23/2021] [Indexed: 02/08/2023]
Abstract
The skin serves as the interface between the body and the environment and plays a fundamental role in innate antimicrobial host immunity. Antiviral proteins (AVPs) are part of the innate host defense system and provide protection against viral pathogens. How breach of the skin barrier influences innate AVP production remains largely unknown. In this study, we characterized the induction and regulation of AVPs after skin injury and identified a key role of TRPV1 in this process. Transcriptional and phenotypic profiling of cutaneous wounds revealed that skin injury induces high levels of AVPs in both mice and humans. Remarkably, pharmacologic and genetic ablation of TRPV1-mediated nociception abrogated the induction of AVPs, including Oas2, Oasl2, and Isg15 after skin injury in mice. Conversely, stimulation of TRPV1 nociceptors was sufficient to induce AVP production involving the CD301b+ cells‒IL-27‒mediated signaling pathway. Using IL-27 receptor‒knockout mice, we show that IL-27 signaling is required in the induction of AVPs after skin injury. Finally, loss of TRPV1 signaling leads to increased viral infectivity of herpes simplex virus. Together, our data indicate that TRPV1 signaling ensures skin antiviral competence on wounding.
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Affiliation(s)
- Vivian Lei
- Department of Dermatology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Chelsea Handfield
- Department of Dermatology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Jeffery T Kwock
- Department of Dermatology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Stephen J Kirchner
- Department of Dermatology, Duke University School of Medicine, Durham, North Carolina, USA; Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Min Jin Lee
- Department of Dermatology, Duke University School of Medicine, Durham, North Carolina, USA; Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Margaret Coates
- Department of Dermatology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Kaiyuan Wang
- Duke Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina, USA; Department of Cell Biology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Qingjian Han
- Duke Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina, USA; Department of Cell Biology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Zilong Wang
- Duke Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina, USA; Department of Cell Biology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Jennifer G Powers
- Department of Dermatology, Duke University School of Medicine, Durham, North Carolina, USA; Department of Dermatology, Carver College of Medicine, University of Iowa Health Care, Iowa, USA
| | - Sarah Wolfe
- Department of Dermatology, Duke University School of Medicine, Durham, North Carolina, USA
| | - David L Corcoran
- Duke Center for Genomic and Computational Biology, Duke University School of Medicine, Durham, North Carolina, USA
| | | | | | - Ru-Rong Ji
- Duke Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina, USA; Department of Cell Biology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Jennifer Y Zhang
- Department of Dermatology, Duke University School of Medicine, Durham, North Carolina, USA; Department of Pathology, Duke University School of Medicine, Durham, North Carolina, USA.
| | - Amanda S MacLeod
- Department of Dermatology, Duke University School of Medicine, Durham, North Carolina, USA; Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina, USA; Department of Immunology, Duke University School of Medicine, Durham, North Carolina, USA
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23
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Abstract
Chronic wounds are characterized by their inability to heal within an expected time frame and have emerged as an increasingly important clinical problem over the past several decades, owing to their increasing incidence and greater recognition of associated morbidity and socio-economic burden. Even up to a few years ago, the management of chronic wounds relied on standards of care that were outdated. However, the approach to these chronic conditions has improved, with better prevention, diagnosis and treatment. Such improvements are due to major advances in understanding of cellular and molecular aspects of basic science, in innovative and technological breakthroughs in treatment modalities from biomedical engineering, and in our ability to conduct well-controlled and reliable clinical research. The evidence-based approaches resulting from these advances have become the new standard of care. At the same time, these improvements are tempered by the recognition that persistent gaps exist in scientific knowledge of impaired healing and the ability of clinicians to reduce morbidity, loss of limb and mortality. Therefore, taking stock of what is known and what is needed to improve understanding of chronic wounds and their associated failure to heal is crucial to ensuring better treatments and outcomes.
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24
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Baess SC, Burkhart AK, Cappello S, Graband A, Seré K, Zenke M, Niemann C, Iden S. Lrig1- and Wnt-dependent niches dictate segregation of resident immune cells and melanocytes in murine tail epidermis. Development 2022; 149:275959. [PMID: 35815643 PMCID: PMC9382897 DOI: 10.1242/dev.200154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 06/13/2022] [Indexed: 11/20/2022]
Abstract
The barrier-forming, self-renewing mammalian epidermis comprises keratinocytes, pigment-producing melanocytes and resident immune cells as first-line host defense. In murine tail skin, interfollicular epidermis patterns into pigmented ‘scale’ and hypopigmented ‘interscale’ epidermis. Why and how mature melanocytes accumulate in scale epidermis is unresolved. Here, we delineate a cellular hierarchy among epidermal cell types that determines skin patterning. Already during postnatal development, melanocytes co-segregate with newly forming scale compartments. Intriguingly, this process coincides with partitioning of both Langerhans cells and dendritic epidermal T cells to interscale epidermis, suggesting functional segregation of pigmentation and immune surveillance. Analysis of non-pigmented mice and of mice lacking melanocytes or resident immune cells revealed that immunocyte patterning is melanocyte and melanin independent and, vice versa, immune cells do not control melanocyte localization. Instead, genetically enforced progressive scale fusion upon Lrig1 deletion showed that melanocytes and immune cells dynamically follow epithelial scale:interscale patterns. Importantly, disrupting Wnt-Lef1 function in keratinocytes caused melanocyte mislocalization to interscale epidermis, implicating canonical Wnt signaling in organizing the pigmentation pattern. Together, this work uncovers cellular and molecular principles underlying the compartmentalization of tissue functions in skin. Summary: Pigmentation and immune surveillance functions in murine tail skin are spatially segregated by Lrig1- and Wnt-Lef1-dependent keratinocyte lineages that control the partitioning of melanocytes and tissue-resident immune cells into distinct epidermal niches.
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Affiliation(s)
- Susanne C. Baess
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne 1 , 50931 Cologne , Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne 2 , 50931 Cologne , Germany
- Cell and Developmental Biology, Center of Human and Molecular Biology (ZHMB), Saarland University 3 , Faculty of Medicine, 66421 Homburg/Saar , Germany
| | - Ann-Kathrin Burkhart
- Cell and Developmental Biology, Center of Human and Molecular Biology (ZHMB), Saarland University 3 , Faculty of Medicine, 66421 Homburg/Saar , Germany
| | - Sabrina Cappello
- Cell and Developmental Biology, Center of Human and Molecular Biology (ZHMB), Saarland University 3 , Faculty of Medicine, 66421 Homburg/Saar , Germany
| | - Annika Graband
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne 1 , 50931 Cologne , Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne 2 , 50931 Cologne , Germany
- Cell and Developmental Biology, Center of Human and Molecular Biology (ZHMB), Saarland University 3 , Faculty of Medicine, 66421 Homburg/Saar , Germany
| | - Kristin Seré
- Institute for Biomedical Engineering 4 , Department of Cell Biology , , 52074 Aachen , Germany
- RWTH Aachen University Medical School 4 , Department of Cell Biology , , 52074 Aachen , Germany
- Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University 5 , 52074 Aachen , Germany
| | - Martin Zenke
- Institute for Biomedical Engineering 4 , Department of Cell Biology , , 52074 Aachen , Germany
- RWTH Aachen University Medical School 4 , Department of Cell Biology , , 52074 Aachen , Germany
- Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University 5 , 52074 Aachen , Germany
| | - Catherin Niemann
- Center for Molecular Medicine Cologne (CMMC), University of Cologne 2 , 50931 Cologne , Germany
- Center of Biochemistry 6 , Faculty of Medicine , , 50931 Cologne , Germany
- University Hospital Cologne 6 , Faculty of Medicine , , 50931 Cologne , Germany
| | - Sandra Iden
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne 1 , 50931 Cologne , Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne 2 , 50931 Cologne , Germany
- Cell and Developmental Biology, Center of Human and Molecular Biology (ZHMB), Saarland University 3 , Faculty of Medicine, 66421 Homburg/Saar , Germany
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25
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Van Kaer L, Postoak JL, Song W, Wu L. Innate and Innate-like Effector Lymphocytes in Health and Disease. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:199-207. [PMID: 35821102 PMCID: PMC9285656 DOI: 10.4049/jimmunol.2200074] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/11/2022] [Indexed: 04/20/2023]
Abstract
Lymphocytes can be functionally partitioned into subsets belonging to the innate or adaptive arms of the immune system. Subsets of innate and innate-like lymphocytes may or may not express Ag-specific receptors of the adaptive immune system, yet they are poised to respond with innate-like speed to pathogenic insults but lack the capacity to develop classical immunological memory. These lymphocyte subsets display a number of common properties that permit them to integrate danger and stress signals dispatched by innate sensor cells to facilitate the generation of specialized effector immune responses tailored toward specific pathogens or other insults. In this review, we discuss the functions of distinct subsets of innate and innate-like lymphocytes. A better understanding of the mechanisms by which these cells are activated in different contexts, their interactions with other immune cells, and their role in health and disease may inform the development of new or improved immunotherapies.
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Affiliation(s)
- Luc Van Kaer
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - J Luke Postoak
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Wenqiang Song
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Lan Wu
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
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26
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Qu G, Wang S, Zhou Z, Jiang D, Liao A, Luo J. Comparing Mouse and Human Tissue-Resident γδ T Cells. Front Immunol 2022; 13:891687. [PMID: 35757696 PMCID: PMC9215113 DOI: 10.3389/fimmu.2022.891687] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/06/2022] [Indexed: 12/28/2022] Open
Abstract
Circulating immune cell compartments have been extensively studied for decades, but limited access to peripheral tissue and cell yield have hampered our understanding of tissue-based immunity, especially in γδ T cells. γδ T cells are a unique subset of T cells that are rare in secondary lymphoid organs, but enriched in many peripheral tissues including the skin, uterus, and other epithelial tissues. In addition to immune surveillance activities, recent reports have revealed exciting new roles for γδ T cells in homeostatic tissue physiology in mice and humans. It is therefore important to investigate to what extent the developmental rules described using mouse models transfer to human γδ T cells. Besides, it will be necessary to understand the differences in the development and biogenesis of human and mouse γδ T cells; to understand how γδ T cells are maintained in physiological and pathological circumstances within different tissues, as well as characterize the progenitors of different tissue-resident γδ T cells. Here, we summarize current knowledge of the γδ T phenotype in various tissues in mice and humans, describing the similarities and differences of tissue-resident γδ T cells in mice and humans.
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Affiliation(s)
- Guanyu Qu
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shengli Wang
- School of Basic Medicine, Jinan University, Guangzhou, China
| | - Zhenlong Zhou
- Institute of Biomedicine and National Engineering Research Center of Genetic Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Dawei Jiang
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Aihua Liao
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Luo
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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27
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Rosenblum D, Naik S. Epithelial-immune crosstalk in health and disease. Curr Opin Genet Dev 2022; 74:101910. [PMID: 35461159 PMCID: PMC9170062 DOI: 10.1016/j.gde.2022.101910] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/02/2022] [Accepted: 03/10/2022] [Indexed: 11/03/2022]
Abstract
Far from inert structures, our body's epithelial boundaries engage in a dynamic crosstalk with immune cells that is vital for immune surveillance and barrier function. Using the skin and gut epithelium, two structurally distinct but critical environmental interfaces, here we review the context-dependent interactions between myriad immune cells and epithelial subsets. We discuss immune communique reserved for epithelial progenitors and the enduring consequences for tissue fitness. Then, we delve into the cellular and molecular exchanges between differentiated epithelial subsets and adjacent immune cells. Therapeutically targeting stage-specific immune-epithelial interaction could boost regeneration and mitigate inflammatory pathologies.
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Affiliation(s)
- Daniel Rosenblum
- Department of Pathology, NYU Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA. https://twitter.com/@_icamps
| | - Shruti Naik
- Department of Pathology, Department of Medicine, and Ronald O. Perelman Department of Dermatology, NYU Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA.
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28
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Hu W, Shang R, Yang J, Chen C, Liu Z, Liang G, He W, Luo G. Skin γδ T Cells and Their Function in Wound Healing. Front Immunol 2022; 13:875076. [PMID: 35479079 PMCID: PMC9035842 DOI: 10.3389/fimmu.2022.875076] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 03/21/2022] [Indexed: 01/08/2023] Open
Abstract
For the skin immune system, γδ T cells are important components, which help in defensing against damage and infection of skin. Compared to the conventional αβ T cells, γδ T cells have their own differentiation, development and activation characteristics. In adult mice, dendritic epidermal T cells (DETCs), Vγ4 and Vγ6 γδ T cells are the main subsets of skin, the coordination and interaction among them play a crucial role in wound repair. To get a clear overview of γδ T cells, this review synopsizes their derivation, development, colonization and activation, and focuses their function in acute and chronic wound healing, as well as the underlining mechanism. The aim of this paper is to provide cues for the study of human epidermal γδ T cells and the potential treatment for skin rehabilitation.
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Affiliation(s)
- Wengang Hu
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
- Chongqing Key Laboratory for Disease Proteomics, Chongqing, China
| | - Ruoyu Shang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
- Chongqing Key Laboratory for Disease Proteomics, Chongqing, China
| | - Jiacai Yang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
- Chongqing Key Laboratory for Disease Proteomics, Chongqing, China
| | - Cheng Chen
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
- Chongqing Key Laboratory for Disease Proteomics, Chongqing, China
| | - Zhihui Liu
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
- Chongqing Key Laboratory for Disease Proteomics, Chongqing, China
| | - Guangping Liang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
- Chongqing Key Laboratory for Disease Proteomics, Chongqing, China
- *Correspondence: Guangping Liang, ; Weifeng He, ; Gaoxing Luo,
| | - Weifeng He
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
- Chongqing Key Laboratory for Disease Proteomics, Chongqing, China
- *Correspondence: Guangping Liang, ; Weifeng He, ; Gaoxing Luo,
| | - Gaoxing Luo
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
- Chongqing Key Laboratory for Disease Proteomics, Chongqing, China
- *Correspondence: Guangping Liang, ; Weifeng He, ; Gaoxing Luo,
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29
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Abstract
Coronary atherosclerosis is a chronic inflammatory disease that can lead to varying degrees of blood flow obstruction and a common pathophysiological basis of cardiovascular disease. Inflammatory factors run through the whole process of atherosclerotic lesions. Macrophages, T cells, and neutrophils play important roles in the process of atherosclerotic inflammation. Considering the evolutionary characteristics, atherosclerosis can be divided into different stages as early atherosclerotic plaque, plaque formation stage, and plaque rupture stage. In this paper, the changes in inflammatory cells at different stages of lesions and their related mechanisms are discussed, which can provide new insights from a clinical to bench perspective for atherosclerosis me chanism.
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30
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Liu M, Liu Z, Chen Y, Peng S, Yang J, Chen C, Wang J, Shang R, Tang Y, Huang Y, Zhang X, Hu X, Liou YC, Luo G, He W. Dendritic epidermal T cells secreting exosomes promote the proliferation of epidermal stem cells to enhance wound re-epithelialization. Stem Cell Res Ther 2022; 13:121. [PMID: 35313958 PMCID: PMC8935714 DOI: 10.1186/s13287-022-02783-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 02/09/2022] [Indexed: 12/04/2022] Open
Abstract
Background Efficient re-epithelialization is important for successful skin wound healing. The proportion of epidermal stem cells (EpSCs) and dendritic epidermal T cells (DETCs) determines the extent of wound re-epithelialization, especially in large areas of skin tissue loss. However, it remains unknown whether and how DETCs regulate the status of EpSCs to impact wound re-epithelialization. Methods To investigate how DETCs regulate EpSCs in skin re-epithelialization, we utilized normal or full-thickness skin deficient wide type (WT) mice and Tcrσ knockout (Tcrσ−/−) mice with DETCs or DETCs-derived exosomes (Exos) treatment. Flow cytometry analysis (FCAS), BrdU labelled experiments, immunofluorescence and immunohistochemical assays were performed to detect the proportion of EpSCs in the epidermis. Wound closure rate and re-epithelialization were assayed by a macroscopical view and hematoxylin–eosin (H&E) staining. EpSCs in vitro were co-cultured with DETCs in a transwell-dependent or -independent manner, or supplement with GW4869 or Exos (5 µg/mL, 15 µg/mL and 45 µg/mL), and the proliferation of EpSCs was detected by means of FCAS and CFSE. Results Our data showed that the proportion of CD49fbriCD71dim cells, K15+ cells and BrdU+ cells in the normal epidermis of Tcrδ−/− mice had no significant difference compared to WT mice. For wounded Tcrδ−/− mice, DETCs treatment increase the proportion of CD49fbriCD71dim cells, K15+ cells and BrdU+ cells in the epidermis around the wound in comparison to PBS treatment. DETCs significantly increased the number of CD49fbriCD7dim cells and K15+ cells through transwell-dependent or -independent manners relative to control group. Furthermore, Exos stimuli remarkedly promote the proliferation of EpSCs compared to control group, while the increasement was suppressed when DETCs were interfered with GW4869. Gross observation and H&E staining showed that Exos significantly accelerated wound closure and increased re-epithelialization length in Tcrδ−/− mice when compared to control mice. Additionally, we found in vivo that Exos observably facilitated the proliferation of CD49fbriCD7dim cells and K15+ cells. Conclusions We revealed that DETCs enhanced the proliferation of EpSCs in the epidermis around the wounds to accelerate re-epithelialization in which Exos played important roles in the remote regulation of EpSCs proliferation. Together, these findings suggest a mechanistic link among DETC-derived exosomes, the proliferation of EpSCs, and wound re-epithelialization in the skin.
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Affiliation(s)
- Mian Liu
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China
| | - Zhihui Liu
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China
| | - Yunxia Chen
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China
| | - Shiya Peng
- Department of Dermatology, Xinqiao Hospital, Army Military Medical University, Chongqing, 400038, China
| | - Jiacai Yang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China
| | - Cheng Chen
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China
| | - Jue Wang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China
| | - Ruoyu Shang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China
| | - Yuanyang Tang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.,Academy of Biological Engineering, Chongqing University, Chongqing, 400038, China
| | - Yong Huang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China
| | - Xiaorong Zhang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China
| | - Xiaohong Hu
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China
| | - Yih-Cherng Liou
- Department Biological Sciences, National University of Singapore, Singapore, 117543, Singapore.
| | - Gaoxing Luo
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China. .,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China.
| | - Weifeng He
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China. .,Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China.
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31
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Immune Cells in Cutaneous Wound Healing: A Review of Functional Data from Animal Models. Int J Mol Sci 2022; 23:ijms23052444. [PMID: 35269586 PMCID: PMC8910456 DOI: 10.3390/ijms23052444] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/10/2022] [Accepted: 02/18/2022] [Indexed: 11/17/2022] Open
Abstract
The healing of skin wounds involves the activation and recruitment of various immune cell types, many of which are believed to contribute significantly to different aspects of the repair process. Roles for immune cells have been described in practically all stages of wound healing, including hemostasis, inflammation, proliferation and scar formation/remodeling. Over the last decade, tools to deplete immune cell populations in animal models have become more advanced, leading to a surge in the number of studies examining the function of specific immune cell types in skin repair. In this review, we will summarize what is known about distinct immune cell types in cutaneous wound healing, with an emphasis on data from animal studies in which specific cell types have been targeted.
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32
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Zhang W, Pajulas A, Kaplan MH. γδ T Cells in Skin Inflammation. Crit Rev Immunol 2022; 42:43-56. [PMID: 37075018 PMCID: PMC10439530 DOI: 10.1615/critrevimmunol.2022047288] [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] [Indexed: 01/05/2023]
Abstract
Gamma delta (γδ) T cells are a subset of T lymphocytes that express T cell receptor γ and 5 chains and display structural and functional heterogeneity. γδ T cells are typically of low abundance in the body and account for 1-5% of the blood lymphocytes and peripheral lymphoid tissues. As a bridge between innate and adaptive immunity, γδ T cells are uniquely poised to rapidly respond to stimulation and can regulate immune responses in peripheral tissues. The dendritic epidermal T cells in the skin epidermis can secrete growth factors to regulate skin homeostasis and re-epithelization and release inflammatory factors to mediate wound healing during skin inflammatory responses. Dermal γδ T cells can regulate the inflammatory process by producing interleukin-17 and other cytokines or chemokines. Here, we offer a review of the immune functions of γδ T cells, intending to understand their role in regulating skin barrier integrity and skin wound healing, which may be crucial for the development of novel therapeutics in skin diseases like atopic dermatitis and psoriasis.
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Affiliation(s)
- Wenwu Zhang
- Department of Microbiology & Immunology, Indiana University School Medicine, Indianapolis, IN 46202
| | - Abigail Pajulas
- Department of Microbiology & Immunology, Indiana University School Medicine, Indianapolis, IN 46202
| | - Mark H Kaplan
- Department of Microbiology & Immunology, Indiana University School Medicine, Indianapolis, IN 46202
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33
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Wagner M, Koyasu S. Innate Lymphoid Cells in Skin Homeostasis and Malignancy. Front Immunol 2021; 12:758522. [PMID: 34691082 PMCID: PMC8531516 DOI: 10.3389/fimmu.2021.758522] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 09/22/2021] [Indexed: 01/09/2023] Open
Abstract
Innate lymphoid cells (ILCs) are mostly tissue resident lymphocytes that are preferentially enriched in barrier tissues such as the skin. Although they lack the expression of somatically rearranged antigen receptors present on T and B cells, ILCs partake in multiple immune pathways by regulating tissue inflammation and potentiating adaptive immunity. Emerging evidence indicates that ILCs play a critical role in the control of melanoma, a type of skin malignancy thought to trigger immunity mediated mainly by adaptive immune responses. Here, we compile our current understanding of ILCs with regard to their role as the first line of defence against melanoma development and progression. We also discuss areas that merit further investigation. We envisage that the possibility to harness therapeutic potential of ILCs might benefit patients suffering from skin malignancies such as melanoma.
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Affiliation(s)
- Marek Wagner
- Laboratory for Immune Cell Systems, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.,Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Shigeo Koyasu
- Laboratory for Immune Cell Systems, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
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34
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Li X, Yang Y, Wang Z, Jiang S, Meng Y, Song X, Zhao L, Zou L, Li M, Yu T. Targeting non-coding RNAs in unstable atherosclerotic plaques: Mechanism, regulation, possibilities, and limitations. Int J Biol Sci 2021; 17:3413-3427. [PMID: 34512156 PMCID: PMC8416736 DOI: 10.7150/ijbs.62506] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 07/23/2021] [Indexed: 02/07/2023] Open
Abstract
Cardiovascular diseases (CVDs) caused by arteriosclerosis are the leading cause of death and disability worldwide. In the late stages of atherosclerosis, the atherosclerotic plaque gradually expands in the blood vessels, resulting in vascular stenosis. When the unstable plaque ruptures and falls off, it blocks the vessel causing vascular thrombosis, leading to strokes, myocardial infarctions, and a series of other serious diseases that endanger people's lives. Therefore, regulating plaque stability is the main means used to address the high mortality associated with CVDs. The progression of the atherosclerotic plaque is a complex integration of vascular cell apoptosis, lipid metabolism disorders, inflammatory cell infiltration, vascular smooth muscle cell migration, and neovascular infiltration. More recently, emerging evidence has demonstrated that non-coding RNAs (ncRNAs) play a significant role in regulating the pathophysiological process of atherosclerotic plaque formation by affecting the biological functions of the vasculature and its associated cells. The purpose of this paper is to comprehensively review the regulatory mechanisms involved in the susceptibility of atherosclerotic plaque rupture, discuss the limitations of current approaches to treat plaque instability, and highlight the potential clinical value of ncRNAs as novel diagnostic biomarkers and potential therapeutic strategies to improve plaque stability and reduce the risk of major cardiovascular events.
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Affiliation(s)
- Xiaoxin Li
- Institute for translational medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, 266021, People's Republic of China
| | - Yanyan Yang
- Institute for translational medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, 266021, People's Republic of China
| | - Zhibin Wang
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Shaoyan Jiang
- Department of Cardiology, The Affiliated Cardiovascular Hospital of Qingdao University, No. 5 Zhiquan Road, Qingdao 266000, China
| | - Yuanyuan Meng
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Xiaoxia Song
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Liang Zhao
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Lu Zou
- Institute for translational medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, 266021, People's Republic of China
| | - Min Li
- Institute for translational medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, 266021, People's Republic of China
| | - Tao Yu
- Institute for translational medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, 266021, People's Republic of China.,Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
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35
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Niec RE, Rudensky AY, Fuchs E. Inflammatory adaptation in barrier tissues. Cell 2021; 184:3361-3375. [PMID: 34171319 DOI: 10.1016/j.cell.2021.05.036] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 04/27/2021] [Accepted: 05/19/2021] [Indexed: 02/08/2023]
Abstract
Surface epithelia provide a critical barrier to the outside world. Upon a barrier breach, resident epithelial and immune cells coordinate efforts to control infections and heal tissue damage. Inflammation can etch lasting marks within tissues, altering features such as scope and quality of future responses. By remembering inflammatory experiences, tissues are better equipped to quickly and robustly respond to barrier breaches. Alarmingly, in disease states, memory may fuel the inflammatory fire. Here, we review the cellular communication networks in barrier tissues and the integration between tissue-resident and recruited immune cells and tissue stem cells underlying tissue adaptation to environmental stress.
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Affiliation(s)
- Rachel E Niec
- Robin Chemers Neustein Laboratory of Mammalian Cell Biology and Development, Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10065, USA; Department of Gastroenterology and Hepatology, Weill Cornell Medicine, Cornell University, New York, NY 10065, USA
| | - Alexander Y Rudensky
- Howard Hughes Medical Institute and Ludwig Center at Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
| | - Elaine Fuchs
- Robin Chemers Neustein Laboratory of Mammalian Cell Biology and Development, Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10065, USA.
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36
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Keratin Scaffolds Containing Casomorphin Stimulate Macrophage Infiltration and Accelerate Full-Thickness Cutaneous Wound Healing in Diabetic Mice. Molecules 2021; 26:molecules26092554. [PMID: 33925737 PMCID: PMC8125279 DOI: 10.3390/molecules26092554] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/13/2021] [Accepted: 04/21/2021] [Indexed: 12/11/2022] Open
Abstract
Impaired wound healing is a major medical challenge, especially in diabetics. Over the centuries, the main goal of tissue engineering and regenerative medicine has been to invent biomaterials that accelerate the wound healing process. In this context, keratin-derived biomaterial is a promising candidate due to its biocompatibility and biodegradability. In this study, we evaluated an insoluble fraction of keratin containing casomorphin as a wound dressing in a full-thickness surgical skin wound model in mice (n = 20) with iatrogenically induced diabetes. Casomorphin, an opioid peptide with analgesic properties, was incorporated into keratin and shown to be slowly released from the dressing. An in vitro study showed that keratin-casomorphin dressing is biocompatible, non-toxic, and supports cell growth. In vivo experiments demonstrated that keratin-casomorphin dressing significantly (p < 0.05) accelerates the whole process of skin wound healing to the its final stage. Wounds covered with keratin-casomorphin dressing underwent reepithelization faster, ending up with a thicker epidermis than control wounds, as confirmed by histopathological and immunohistochemical examinations. This investigated dressing stimulated macrophages infiltration, which favors tissue remodeling and regeneration, unlike in the control wounds in which neutrophils predominated. Additionally, in dressed wounds, the number of microhemorrhages was significantly decreased (p < 0.05) as compared with control wounds. The dressing was naturally incorporated into regenerating tissue during the wound healing process. Applied keratin dressing favored reconstruction of more regular skin structure and assured better cosmetic outcome in terms of scar formation and appearance. Our results have shown that insoluble keratin wound dressing containing casomorphin supports skin wound healing in diabetic mice.
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37
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Abstract
The immune system has coevolved with extensive microbial communities living on barrier sites that are collectively known as the microbiota. It is increasingly clear that microbial antigens and metabolites engage in a constant dialogue with the immune system, leading to microbiota-specific immune responses that occur in the absence of inflammation. This form of homeostatic immunity encompasses many arms of immunity, including B cell responses, innate-like T cells, and conventional T helper and T regulatory responses. In this review we summarize known examples of innate-like T cell and adaptive immunity to the microbiota, focusing on fundamental aspects of commensal immune recognition across different barrier sites. Furthermore, we explore how this cross talk is established during development, emphasizing critical temporal windows that establish long-term immune function. Finally, we highlight how dysregulation of immunity to the microbiota can lead to inflammation and disease, and we pinpoint outstanding questions and controversies regarding immune system-microbiota interactions.
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Affiliation(s)
- Eduard Ansaldo
- Metaorganism Immunity Section, Laboratory of Host Immunity and Microbiome, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20814, USA;
| | - Taylor K Farley
- Metaorganism Immunity Section, Laboratory of Host Immunity and Microbiome, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20814, USA; .,Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford OX3 7FY, United Kingdom
| | - Yasmine Belkaid
- Metaorganism Immunity Section, Laboratory of Host Immunity and Microbiome, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20814, USA; .,Microbiome Program, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20892, USA
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38
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Tanno H, Kanno E, Sato S, Asao Y, Shimono M, Kurosaka S, Oikawa Y, Ishi S, Shoji M, Sato K, Kasamatsu J, Miyasaka T, Yamamoto H, Ishii K, Imai Y, Tachi M, Kawakami K. Contribution of Invariant Natural Killer T Cells to the Clearance of Pseudomonas aeruginosa from Skin Wounds. Int J Mol Sci 2021; 22:3931. [PMID: 33920301 PMCID: PMC8070359 DOI: 10.3390/ijms22083931] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/05/2021] [Accepted: 04/08/2021] [Indexed: 12/13/2022] Open
Abstract
Chronic infections are considered one of the most severe problems in skin wounds, and bacteria are present in over 90% of chronic wounds. Pseudomonas aeruginosa is frequently isolated from chronic wounds and is thought to be a cause of delayed wound healing. Invariant natural killer T (iNKT) cells, unique lymphocytes with a potent regulatory ability in various inflammatory responses, accelerate the wound healing process. In the present study, we investigated the contribution of iNKT cells in the host defense against P. aeruginosa inoculation at the wound sites. We analyzed the re-epithelialization, bacterial load, accumulation of leukocytes, and production of cytokines and antimicrobial peptides. In iNKT cell-deficient (Jα18KO) mice, re-epithelialization was significantly decreased, and the number of live colonies was significantly increased, when compared with those in wild-type (WT) mice on day 7. IL-17A, and IL-22 production was significantly lower in Jα18KO mice than in WT mice on day 5. Furthermore, the administration of α-galactosylceramide (α-GalCer), a specific activator of iNKT cells, led to enhanced host protection, as shown by reduced bacterial load, and to increased production of IL-22, IL-23, and S100A9 compared that of with WT mice. These results suggest that iNKT cells promote P. aeruginosa clearance during skin wound healing.
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Grants
- a Grant-in-Aid for Scientific Research (B) (19H03918), The Ministry of Education, Culture, Sports, Science and Technology of Japan
- a Grant-in-Aid for Challenging Exploratory Research (17K19710) The Ministry of Education, Culture, Sports, Science and Technology of Japan
- a Grant-in-Aid for Young Scientists (17K17393) the Ministry of Education, Culture, Sports, Science and Technology of Japan
- a Grant-in-Aid for Young Scientists (19K19494) The Ministry of Education, Culture, Sports, Science and Technology of Japan
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Affiliation(s)
- Hiromasa Tanno
- Department of Science of Nursing Practice, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (E.K.); (S.S.); (Y.A.); (M.S.)
| | - Emi Kanno
- Department of Science of Nursing Practice, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (E.K.); (S.S.); (Y.A.); (M.S.)
| | - Suzuna Sato
- Department of Science of Nursing Practice, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (E.K.); (S.S.); (Y.A.); (M.S.)
| | - Yu Asao
- Department of Science of Nursing Practice, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (E.K.); (S.S.); (Y.A.); (M.S.)
| | - Mizuki Shimono
- Department of Science of Nursing Practice, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (E.K.); (S.S.); (Y.A.); (M.S.)
| | - Shiho Kurosaka
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (S.K.); (S.I.); (M.S.); (Y.I.); (M.T.)
| | - Yukari Oikawa
- Department of Medical Microbiology, Mycology and Immunology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (Y.O.); (K.I.); (K.K.)
| | - Shinyo Ishi
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (S.K.); (S.I.); (M.S.); (Y.I.); (M.T.)
| | - Miki Shoji
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (S.K.); (S.I.); (M.S.); (Y.I.); (M.T.)
| | - Ko Sato
- Department of Intelligent Network for Infection Control, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (K.S.); (J.K.)
| | - Jun Kasamatsu
- Department of Intelligent Network for Infection Control, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (K.S.); (J.K.)
| | - Tomomitsu Miyasaka
- Division of Pathophysiology, Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan;
| | - Hideki Yamamoto
- Graduate School of Health Sciences, Niigata University, 2-746 Asahimachi-dori, Chuo-ku, Niigata 951-8518, Japan;
| | - Keiko Ishii
- Department of Medical Microbiology, Mycology and Immunology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (Y.O.); (K.I.); (K.K.)
| | - Yoshimichi Imai
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (S.K.); (S.I.); (M.S.); (Y.I.); (M.T.)
| | - Masahiro Tachi
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (S.K.); (S.I.); (M.S.); (Y.I.); (M.T.)
| | - Kazuyoshi Kawakami
- Department of Medical Microbiology, Mycology and Immunology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (Y.O.); (K.I.); (K.K.)
- Department of Intelligent Network for Infection Control, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (K.S.); (J.K.)
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39
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Bechara R, McGeachy MJ, Gaffen SL. The metabolism-modulating activity of IL-17 signaling in health and disease. J Exp Med 2021; 218:211951. [PMID: 33822846 PMCID: PMC8025242 DOI: 10.1084/jem.20202191] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/08/2021] [Accepted: 02/25/2021] [Indexed: 12/22/2022] Open
Abstract
IL-17 was discovered nearly 30 yr ago, but it has only been recently appreciated that a key function of this cytokine is to orchestrate cellular and organismal metabolism. Indeed, metabolic regulation is integrated into both the physiological and the pathogenic aspects of IL-17 responses. Thus, understanding the interplay between IL-17 and downstream metabolic processes could ultimately inform therapeutic opportunities for diseases involving IL-17, including some not traditionally linked to this cytokine pathway. Here, we discuss the emerging pathophysiological roles of IL-17 related to cellular and organismal metabolism, including metabolic regulation of IL-17 signal transduction.
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Affiliation(s)
- Rami Bechara
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA
| | - Mandy J McGeachy
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA
| | - Sarah L Gaffen
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA
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40
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Borowczyk J, Shutova M, Brembilla NC, Boehncke WH. IL-25 (IL-17E) in epithelial immunology and pathophysiology. J Allergy Clin Immunol 2021; 148:40-52. [PMID: 33485651 DOI: 10.1016/j.jaci.2020.12.628] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 12/08/2020] [Accepted: 12/16/2020] [Indexed: 02/07/2023]
Abstract
IL-25, also known as IL-17E, is a unique cytokine of the IL-17 family. Indeed, IL-25 exclusively was shown to strongly induce expression of the cytokines associated with type 2 immunity. Although produced by several types of immune cells, such as T cells, dendritic cells, or group 2 innate lymphoid cells, a vast amount of IL-25 derives from epithelial cells. The functions of IL-25 have been actively studied in the context of physiology and pathology of various organs including skin, airways and lungs, gastrointestinal tract, and thymus. Accumulating evidence suggests that IL-25 is a "barrier surface" cytokine whose expression depends on extrinsic environmental factors and when upregulated may lead to inflammatory disorders such as atopic dermatitis, psoriasis, or asthma. This review summarizes the progress of the recent years regarding the effects of IL-25 on the regulation of immune response and the balance between its homeostatic and pathogenic role in various epithelia. We revisit IL-25's general and tissue-specific mechanisms of action, mediated signaling pathways, and transcription factors activated in immune and resident cells. Finally, we discuss perspectives of the IL-25-based therapies for inflammatory disorders and compare them with the mainstream ones that target IL-17A.
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Affiliation(s)
- Julia Borowczyk
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - Maria Shutova
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | | | - Wolf-Henning Boehncke
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland; Division of Dermatology and Venereology, University Hospitals of Geneva, Geneva, Switzerland.
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41
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Myeloid-like γδ T cell subset in the immune response to an experimental Rift Valley fever vaccine in sheep. Vet Immunol Immunopathol 2021; 233:110184. [PMID: 33454621 DOI: 10.1016/j.vetimm.2021.110184] [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: 11/13/2019] [Revised: 06/15/2020] [Accepted: 01/04/2021] [Indexed: 12/30/2022]
Abstract
γδ T cells are a numerically significant subset of immune cells in ruminants, where they may comprise up to 70 % of all peripheral blood mononuclear cells (PBMCs) in young animals and 25 % in adults. These cells can be activated through traditional TCR-dependent mechanisms, or alternatively in a TCR-independent manner by pattern recognition receptors and have been shown to uptake antigen, as well as process and present it to αβ T cells. We have identified a novel CD11b+ subset of γδ T cells in normal sheep peripheral blood. An increase in the frequency of these cells in sheep peripheral blood in response to immunization with an experimental recombinant subunit Rift Valley fever (RVF) vaccine was observed. However, injection of the vaccine adjuvant ISA-25VG alone without the recombinant RVF virus antigens demonstrated the same effect, pointing to an antigen-independent innate immune function of CD11b+ γδ T cells in response to the adjuvant. In vitro studies showed repeatable increases of CD11b-, CD14-, CD86-, CD40-, CD72-, and IFNγ- expressing γδ T cells in PBMCs after 24 h of incubation in the absence of a mitogen. Moreover, the majority of these myeloid-like γδ T cells were demonstrated to process exogenous antigen even in the absence of mitogen. ConA activation increased CD25- and MHCII- expression in γδ T cells, but not the myeloid associated receptors CD14 or CD11b or co-stimulatory molecules such as CD86 and CD40. Considering the role of CD11b and CD14 in the activation of innate immunity, we hypothesize that this subpopulation of sheep γδ T cells may function as innate antigen presenting and pro-inflammatory cells during immune responses. The results presented here also suggest that stress molecules and/or damage-associated molecular patterns may be involved in triggering antigen presenting and pro-inflammatory functions of γδ T cells, given their appearance in vitro in the absence of specific stimulation. Taken together, these data suggest that the early appearance of γδ T cells following adjuvant administration and their possible role in early activation of αβ T cell subsets may non-specifically contribute to augmented innate immunity and may promote strong initiation of the adaptive immune response to vaccines in general.
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42
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Innate IL-17A Enhances IL-33-Independent Skin Eosinophilia and IgE Response on Subcutaneous Papain Sensitization. J Invest Dermatol 2021; 141:105-113.e14. [DOI: 10.1016/j.jid.2020.05.088] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 04/30/2020] [Accepted: 05/06/2020] [Indexed: 12/20/2022]
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43
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Xu Y, Dimitrion P, Cvetkovski S, Zhou L, Mi QS. Epidermal resident γδ T cell development and function in skin. Cell Mol Life Sci 2021; 78:573-580. [PMID: 32803399 PMCID: PMC11073445 DOI: 10.1007/s00018-020-03613-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 06/24/2020] [Accepted: 07/30/2020] [Indexed: 12/22/2022]
Abstract
Epidermal resident γδ T cells, or dendritic epidermal T cells (DETCs) in mice, are a unique and conserved population of γδ T cells enriched in the epidermis, where they serve as the regulators of immune responses and sense skin injury. Despite the great advances in the understanding of the development, homeostasis, and function of DETCs in the past decades, the origin and the underlying molecular mechanisms remain elusive. Here, we reviewed the recent research progress on DETCs, including their origin and homeostasis in the skin, especially at transcriptional and epigenetic levels, and discuss the involvement of DETCs in skin diseases.
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Affiliation(s)
- Yingping Xu
- Experimental Research Center, Dermatology Hospital of Southern Medical University, and Guangdong Provincial Dermatology Hospital, Guangzhou, China
- Center for Cutaneous Biology and Immunology, Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
| | - Peter Dimitrion
- Center for Cutaneous Biology and Immunology, Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
- Immunology Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, USA
- Department of Biochemistry, Microbiology and Immunology, Wayne State University School Medicine University, Detroit, MI, USA
| | - Steven Cvetkovski
- Center for Cutaneous Biology and Immunology, Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
- Immunology Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, USA
- Department of Biochemistry, Microbiology and Immunology, Wayne State University School Medicine University, Detroit, MI, USA
| | - Li Zhou
- Center for Cutaneous Biology and Immunology, Department of Dermatology, Henry Ford Health System, Detroit, MI, USA.
- Immunology Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, USA.
- Department of Biochemistry, Microbiology and Immunology, Wayne State University School Medicine University, Detroit, MI, USA.
- Department of Internal Medicine, Henry Ford Health System, Detroit, MI, USA.
| | - Qing-Sheng Mi
- Center for Cutaneous Biology and Immunology, Department of Dermatology, Henry Ford Health System, Detroit, MI, USA.
- Immunology Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, USA.
- Department of Biochemistry, Microbiology and Immunology, Wayne State University School Medicine University, Detroit, MI, USA.
- Department of Internal Medicine, Henry Ford Health System, Detroit, MI, USA.
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44
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Munoz LD, Sweeney MJ, Jameson JM. Skin Resident γδ T Cell Function and Regulation in Wound Repair. Int J Mol Sci 2020; 21:E9286. [PMID: 33291435 PMCID: PMC7729629 DOI: 10.3390/ijms21239286] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 11/26/2020] [Accepted: 12/02/2020] [Indexed: 12/12/2022] Open
Abstract
The skin is a critical barrier that protects against damage and infection. Within the epidermis and dermis reside γδ T cells that play a variety of key roles in wound healing and tissue homeostasis. Skin-resident γδ T cells require T cell receptor (TCR) ligation, costimulation, and cytokine reception to mediate keratinocyte activity and inflammatory responses at the wound site for proper wound repair. While both epidermal and dermal γδ T cells regulate inflammatory responses in wound healing, the timing and factors produced are distinct. In the absence of growth factors, cytokines, and chemokines produced by γδ T cells, wound repair is negatively impacted. This disruption in γδ T cell function is apparent in metabolic diseases such as obesity and type 2 diabetes. This review provides the current state of knowledge on skin γδ T cell activation, regulation, and function in skin homeostasis and repair in mice and humans. As we uncover more about the complex roles played by γδ T cells in wound healing, novel targets can be discovered for future clinical therapies.
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Affiliation(s)
| | | | - Julie M. Jameson
- Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096, USA; (L.D.M.); (M.J.S.)
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Piipponen M, Li D, Landén NX. The Immune Functions of Keratinocytes in Skin Wound Healing. Int J Mol Sci 2020; 21:E8790. [PMID: 33233704 PMCID: PMC7699912 DOI: 10.3390/ijms21228790] [Citation(s) in RCA: 179] [Impact Index Per Article: 44.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 02/07/2023] Open
Abstract
As the most dominant cell type in the skin, keratinocytes play critical roles in wound repair not only as structural cells but also exerting important immune functions. This review focuses on the communications between keratinocytes and immune cells in wound healing, which are mediated by various cytokines, chemokines, and extracellular vesicles. Keratinocytes can also directly interact with T cells via antigen presentation. Moreover, keratinocytes produce antimicrobial peptides that can directly kill the invading pathogens and contribute to wound repair in many aspects. We also reviewed the epigenetic mechanisms known to regulate keratinocyte immune functions, including histone modifications, non-protein-coding RNAs (e.g., microRNAs, and long noncoding RNAs), and chromatin dynamics. Lastly, we summarized the current evidence on the dysregulated immune functions of keratinocytes in chronic nonhealing wounds. Based on their crucial immune functions in skin wound healing, we propose that keratinocytes significantly contribute to the pathogenesis of chronic wound inflammation. We hope this review will trigger an interest in investigating the immune roles of keratinocytes in chronic wound pathology, which may open up new avenues for developing innovative wound treatments.
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Affiliation(s)
| | | | - Ning Xu Landén
- Center for Molecular Medicine, Ming Wai Lau Centre for Reparative Medicine, Department of Medicine Solna, Dermatology and Venereology Division, Karolinska Institute, 17176 Stockholm, Sweden; (M.P.); (D.L.)
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The Cutaneous Wound Innate Immunological Microenvironment. Int J Mol Sci 2020; 21:ijms21228748. [PMID: 33228152 PMCID: PMC7699544 DOI: 10.3390/ijms21228748] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 12/17/2022] Open
Abstract
The skin represents the first line of defense and innate immune protection against pathogens. Skin normally provides a physical barrier to prevent infection by pathogens; however, wounds, microinjuries, and minor barrier impediments can present open avenues for invasion through the skin. Accordingly, wound repair and protection from invading pathogens are essential processes in successful skin barrier regeneration. To repair and protect wounds, skin promotes the development of a specific and complex immunological microenvironment within and surrounding the disrupted tissue. This immune microenvironment includes both innate and adaptive processes, including immune cell recruitment to the wound and secretion of extracellular factors that can act directly to promote wound closure and wound antimicrobial defense. Recent work has shown that this immune microenvironment also varies according to the specific context of the wound: the microbiome, neuroimmune signaling, environmental effects, and age play roles in altering the innate immune response to wounding. This review will focus on the role of these factors in shaping the cutaneous microenvironment and how this ultimately impacts the immune response to wounding.
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Fischer MA, Golovchenko NB, Edelblum KL. γδ T cell migration: Separating trafficking from surveillance behaviors at barrier surfaces. Immunol Rev 2020; 298:165-180. [PMID: 32845516 PMCID: PMC7968450 DOI: 10.1111/imr.12915] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/22/2020] [Accepted: 07/23/2020] [Indexed: 12/23/2022]
Abstract
γδ T cells are found in highest numbers at barrier surfaces throughout the body, including the skin, intestine, lung, gingiva, and uterus. Under homeostatic conditions, γδ T cells provide immune surveillance of the epidermis, intestinal, and oral mucosa, whereas the presence of pathogenic microorganisms in the dermis or lungs elicits a robust γδ17 response to clear the infection. Although T cell migration is most frequently defined in the context of trafficking, analysis of specific migratory behaviors of lymphocytes within the tissue microenvironment can provide valuable insight into their function. Intravital imaging and computational analyses have been used to define "search" behavior associated with conventional αβ T cells; however, based on the known role of γδ T cells as immune sentinels at barrier surfaces and their TCR-independent functions, we put forth the need to classify distinct migratory patterns that reflect the surveillance capacity of these unconventional lymphocytes. This review will focus on how γδ T cells traffic to various barrier surfaces and how recent investigation into their migratory behavior has provided unique insight into the contribution of γδ T cells to barrier immunity.
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Affiliation(s)
- Matthew A. Fischer
- Center for Immunity and Inflammation, Department of Pathology, Immunology & Laboratory Medicine, Rutgers New Jersey Medical School, Newark, NJ
| | - Natasha B. Golovchenko
- Center for Immunity and Inflammation, Department of Pathology, Immunology & Laboratory Medicine, Rutgers New Jersey Medical School, Newark, NJ
| | - Karen L. Edelblum
- Center for Immunity and Inflammation, Department of Pathology, Immunology & Laboratory Medicine, Rutgers New Jersey Medical School, Newark, NJ
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48
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Abstract
γδ T cells are a unique T cell subpopulation that are rare in secondary lymphoid organs but enriched in many peripheral tissues, such as the skin, intestines and lungs. By rapidly producing large amounts of cytokines, γδ T cells make key contributions to immune responses in these tissues. In addition to their immune surveillance activities, recent reports have unravelled exciting new roles for γδ T cells in steady-state tissue physiology, with functions ranging from the regulation of thermogenesis in adipose tissue to the control of neuronal synaptic plasticity in the central nervous system. Here, we review the roles of γδ T cells in tissue homeostasis and in surveillance of infection, aiming to illustrate their major impact on tissue integrity, tissue repair and immune protection.
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49
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O'Neill K, Pastar I, Tomic-Canic M, Strbo N. Perforins Expression by Cutaneous Gamma Delta T Cells. Front Immunol 2020; 11:1839. [PMID: 32922397 PMCID: PMC7456908 DOI: 10.3389/fimmu.2020.01839] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/08/2020] [Indexed: 01/13/2023] Open
Abstract
Gamma delta (GD) T cells are an unconventional T cell type present in both the epidermis and the dermis of human skin. They are critical to regulating skin inflammation, wound healing, and anti-microbial defense. Similar to CD8+ cytotoxic T cells expressing an alpha beta (AB) TCR, GD T cells have cytolytic capabilities. They play an important role in elimination of cutaneous tumors and virally infected cells and have also been implicated in pathogenicity of several autoimmune diseases. T cell cytotoxicity is associated with the expression of the pore forming protein Perforin. Perforin is an innate immune protein containing a membrane attack complex perforin-like (MACPF) domain and functions by forming pores in the membranes of target cells, which allow granzymes and reactive oxygen species to enter the cells and destroy them. Perforin-2, encoded by the gene MPEG1, is a newly discovered member of this protein family that is critical for clearance of intracellular bacteria. Cutaneous GD T cells express both Perforin and Perforin-2, but many questions remain regarding the role that these proteins play in GD T cell mediated cytotoxicity against tumors and bacterial pathogens. Here, we review what is known about Perforin expression by skin GD T cells and the mechanisms that contribute to Perforin activation.
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Affiliation(s)
- Katelyn O'Neill
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Irena Pastar
- Wound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Marjana Tomic-Canic
- Wound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Natasa Strbo
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL, United States
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50
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Jee MH, Mraz V, Geisler C, Bonefeld CM. γδ T cells and inflammatory skin diseases. Immunol Rev 2020; 298:61-73. [DOI: 10.1111/imr.12913] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/07/2020] [Accepted: 07/15/2020] [Indexed: 12/15/2022]
Affiliation(s)
- Mia Hamilton Jee
- The LEO Foundation Skin Immunology Research Center Department of Immunology and Microbiology Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
| | - Veronika Mraz
- The LEO Foundation Skin Immunology Research Center Department of Immunology and Microbiology Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
| | - Carsten Geisler
- The LEO Foundation Skin Immunology Research Center Department of Immunology and Microbiology Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
| | - Charlotte Menné Bonefeld
- The LEO Foundation Skin Immunology Research Center Department of Immunology and Microbiology Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
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