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Jin S, Wan S, Xiong R, Li Y, Dong T, Guan C. The role of regulatory T cells in vitiligo and therapeutic advances: a mini-review. Inflamm Res 2024:10.1007/s00011-024-01900-w. [PMID: 38839628 DOI: 10.1007/s00011-024-01900-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/21/2024] [Accepted: 05/29/2024] [Indexed: 06/07/2024] Open
Abstract
BACKGROUND Regulatory T cells (Tregs) play vital roles in controlling immune reactions and maintaining immune tolerance in the body. The targeted destruction of epidermal melanocytes by activated CD8+T cells is a key event in the development of vitiligo. However, Tregs may exert immunosuppressive effects on CD8+T cells, which could be beneficial in treating vitiligo. METHODS A comprehensive search of PubMed and Web of Science was conducted to gather information on Tregs and vitiligo. RESULTS In vitiligo, there is a decrease in Treg numbers and impaired Treg functions, along with potential damage to Treg-related signaling pathways. Increasing Treg numbers and enhancing Treg function could lead to immunosuppressive effects on CD8+T cells. Recent research progress on Tregs in vitiligo has been summarized, highlighting various Treg-related therapies being investigated for clinical use. The current status of Treg-related therapeutic strategies and potential future directions for vitiligo treatment are also discussed. CONCLUSIONS A deeper understanding of Tregs will be crucial for advancing Treg-related drug discovery and treatment development in vitiligo.
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Affiliation(s)
- Shiyu Jin
- Hangzhou Third Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310009, China
| | - Sheng Wan
- Hangzhou Third Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310009, China
- Department of Dermatology, Hangzhou Third People's Hospital, Hangzhou, 310009, China
| | - Renxue Xiong
- Hangzhou Third Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310009, China
- Department of Dermatology, Hangzhou Third People's Hospital, Hangzhou, 310009, China
| | - Yujie Li
- Hangzhou Third Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310009, China
| | - Tingru Dong
- Hangzhou Third Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310009, China
| | - Cuiping Guan
- Hangzhou Third Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310009, China.
- Department of Dermatology, Hangzhou Third People's Hospital, Hangzhou, 310009, China.
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Falcon DM, Byrne KA, Sales MA, Erf GF. Spontaneous immunological activities in the target tissue of vitiligo-prone Smyth and vitiligo-susceptible Brown lines of chicken. Front Immunol 2024; 15:1386727. [PMID: 38720888 PMCID: PMC11076693 DOI: 10.3389/fimmu.2024.1386727] [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: 02/15/2024] [Accepted: 04/11/2024] [Indexed: 05/12/2024] Open
Abstract
Introduction Vitiligo is an acquired de-pigmentation disorder characterized by the post-natal loss of epidermal melanocytes (pigment-producing cells) resulting in the appearance of white patches in the skin. The Smyth chicken is the only model for vitiligo that shares all the characteristics of the human condition including: spontaneous post-natal loss of epidermal melanocytes, interactions between genetic, environmental and immunological factors, and associations with other autoimmune diseases. In addition, an avian model for vitiligo has the added benefit of an easily accessible target tissue (a growing feather) that allows for the repeated sampling of an individual and thus the continuous monitoring of local immune responses over time. Methods Using a combination of flow cytometry and gene expression analyses, we sought to gain a comprehensive understanding of the initiating events leading to expression of vitiligo in growing feathers by monitoring the infiltration of leukocytes and concurrent immunological activities in the target tissue beginning prior to visual onset and continuing throughout disease development. Results Here, we document a sequence of immunologically significant events, including characteristic rises in infiltrating B and αβ T cells as well as evidence of active leukocyte recruitment and cell-mediated immune activities (CCL19, IFNG, GZMA) leading up to visual vitiligo onset. Examination of growing feathers from vitiligo-susceptible Brown line chickens revealed anti-inflammatory immune activities which may be responsible for preventing vitiligo (IL10, CTLA4, FOXP3). Furthermore, we detected positive correlations between infiltrating T cells and changes in their T cell receptor diversity supporting a T cell-specific immune response. Conclusion Collectively, these results further support the notion of cell-mediated immune destruction of epidermal melanocytes in the pulp of growing feathers and open new avenues of study in the vitiligo-prone Smyth and vitiligo-susceptible Brown line chickens.
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Affiliation(s)
| | | | | | - Gisela F. Erf
- Division of Agriculture, Department of Poultry Science, University of Arkansas System, Fayetteville, AR, United States
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3
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Rooker A, Ouwerkerk W, Bekkenk MW, Luiten RM, Bakker WJ. The Risk of Keratinocyte Cancer in Vitiligo and the Potential Mechanisms Involved. J Invest Dermatol 2024; 144:234-242. [PMID: 37791932 DOI: 10.1016/j.jid.2023.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 08/16/2023] [Accepted: 08/18/2023] [Indexed: 10/05/2023]
Abstract
Although light skin types are associated with increased skin cancer risk, a lower incidence of both melanoma and nonmelanoma skin cancer (NMSC) has been reported in patients with vitiligo. We performed a systematic review and meta-analysis on the NMSC risk in patients with vitiligo, indicating a reduced relative risk ratio of NMSC in vitiligo. Furthermore, we propose a series of hypotheses on the underlying mechanisms, including both immune-mediated and nonimmune-mediated pathways. This study reveals insights into the relationship between vitiligo and keratinocyte cancer and can also be used to better inform patients with vitiligo.
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Affiliation(s)
- Alex Rooker
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands; Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
| | - Wouter Ouwerkerk
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands; Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
| | - Marcel W Bekkenk
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands; Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands; VU University of Amsterdam, Amsterdam, The Netherlands
| | - Rosalie M Luiten
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands; Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands.
| | - Walbert J Bakker
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands; Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
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Salinas-Santander MA, Suárez-Valencia VDJ, Ángel-Martínez MD, Kubelis-Lopez DE, Zapata-Salazar NA, Ocampo-Garza JA, Ocampo-Candiani J. Association between the CTLA4 +49A/G (rs231775) and CT60 (rs3087243) gene variants with vitiligo: Study on a Mexican population. An Bras Dermatol 2022; 97:710-715. [PMID: 36163113 PMCID: PMC9583029 DOI: 10.1016/j.abd.2021.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 10/17/2021] [Accepted: 10/20/2021] [Indexed: 11/12/2022] Open
Abstract
Background Vitiligo is characterized by an autoimmune response targeting melanocytes, thus resulting in skin depigmentation. There are several genetic components involved in the development of vitiligo, of which various gene polymorphisms are currently considered as risk factors. For example, the CTLA4 (T-lymphocyte antigen 4) +49A/G (rs231775) and CT60 (rs3087243) gene variants have been associated with a predisposition for autoimmune diseases in different populations; however, their involvement in the development of vitiligo remains controversial. Objective We evaluated the association between vitiligo and the CTLA4 +49A/G (rs231775) and CT60 (rs3087243) gene variants in a Mexican population. Methods A total of 116 vitiligo patients and 117 control subjects from northeast Mexico were included in the study and analyzed through PCR-RFLP to determine whether there is an association between vitiligo and CTLA4 +49A/G (rs231775) and CT60 (rs3087243) gene variants. Results No statistical difference was observed for both gene polymorphisms between vitiligo patients and controls (p > 0.05). Otherwise, vitiligo activity, family history of vitiligo, personal history of autoimmune diseases, or sex did not show any difference (p > 0.05). Conclusion As suggested by the analysis of a northeastern Mexican population, the CTLA4 +49A/G (rs231775) and CT60 (rs3087243) gene variants do not constitute a risk factor in the development of vitiligo.
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Affiliation(s)
| | | | - Mayela Del Ángel-Martínez
- Research Department, Facultad de Medicina Unidad Saltillo, Universidad Autónoma de Coahuila, Saltillo, Coahuila, Mexico
| | - David Emmanuel Kubelis-Lopez
- Dermatology Service, Hospital Universitario Dr José Eleuterio González, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico
| | - Natalia Aranza Zapata-Salazar
- Dermatology Service, Hospital Universitario Dr José Eleuterio González, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico
| | - Jorge Alejandro Ocampo-Garza
- Dermatology Service, Hospital Universitario Dr José Eleuterio González, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico
| | - Jorge Ocampo-Candiani
- Dermatology Service, Hospital Universitario Dr José Eleuterio González, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico
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Wan H, Zhou H, Feng Y, Chen Y, Zhu L, Mi Y. Comprehensive Analysis of 29,464 Cancer Cases and 35,858 Controls to Investigate the Effect of the Cytotoxic T-Lymphocyte Antigen 4 Gene rs231775 A/G Polymorphism on Cancer Risk. Front Oncol 2022; 12:878507. [PMID: 35600409 PMCID: PMC9114750 DOI: 10.3389/fonc.2022.878507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 03/28/2022] [Indexed: 12/20/2022] Open
Abstract
In our previous studies, we found that the rs231775 polymorphism of cytotoxic T-lymphocyte antigen 4 (CTLA-4) is associated with risks of different cancer types; however, the association remains controversial and ambiguous, so we conducted an in-depth meta-analysis to verify the association. A complete search of the PubMed, Google Scholar, Embase, Chinese databases, and Web of Science was conducted without regard to language limitations, covering all publications since November 20, 2021. The search criteria for cancer susceptibility associated with the polymorphism in the CTLA-4 gene rs231775 resulted in 87 case-control studies with 29,464 cases and 35,858 controls. The association strength was analyzed using odds ratios and 95% confidence intervals. Overall, we found that the CTLA-4 rs231775 polymorphism may reduce cancer risk. A stratified cancer type analysis showed that CTLA-4 rs231775 polymorphism was a risk factor for colorectal cancer and thyroid cancer; on the other hand, it was a protective factor for breast cancer, liver cancer, cervical cancer, bone cancer, head and neck, and pancreatic cancer. We also classified cancer into five systems and observed an increased association with digestive tract cancer, decreased associations with orthopedic tumors, tumors of the urinary system, and gynecological tumors. In the subgroup based on race, decreased relationships were observed in both Asians and Caucasians. The same decreased association was also shown in the analysis of the source of control analysis. Our present study indicates that the CTLA-4 rs231775 polymorphism contributes to cancer development and aggression.
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Affiliation(s)
- Hongyuan Wan
- Wuxi Medical College, Jiangnan University, Wuxi, China.,Department of Urology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Hangsheng Zhou
- Wuxi Medical College, Jiangnan University, Wuxi, China.,Department of Urology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Yanyan Feng
- Wuxi Medical College, Jiangnan University, Wuxi, China.,Department of Urology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Yongquan Chen
- Wuxi School of Medicine, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Lijie Zhu
- Department of Urology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Yuanyuan Mi
- Department of Urology, Affiliated Hospital of Jiangnan University, Wuxi, China
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