Autoimmune Skin Disease Pathogenesis: A Chronological Immune Cascade and Multi-Hit Model

January 2026 in “ Immunity & Inflammation ”

Jianru Chen, Xiaohui Wang, Shuli Li, Chunying Li

vitiligo autoimmune skin diseases alopecia areata pemphigus vulgaris psoriasis T cell priming tertiary lymphoid structures adaptive immunity inflammatory memory

Studysummary This review discusses a "stochastic multi-hit model" to explain the onset, progression, and recurrence of vitiligo and other autoimmune skin diseases, emphasizing genetic and environmental influences, immune cell interactions, and unexplored mechanistic gaps.

Automatically generated from the study's abstract, not written by a person, and not a review of the full paper. Not medical advice or a treatment recommendation. Read the original study, and consult a qualified healthcare professional before changing treatment. Full disclaimer

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research Hair Regrowth in Alopecia Areata and Re-Pigmentation in Vitiligo in Response to Treatment: Commonalities and Differences

11 citations , September 2024 in “Journal of the European Academy of Dermatology and Venereology”

This review explores the shared pathogenesis of alopecia areata and vitiligo and compares treatment responses, noting that hair regrowth in alopecia areata occurs more rapidly than skin re-pigmentation in vitiligo, possibly due to differences in stem cell biology and treatment effects on melanocytes.

research Melanocyte Stem Cells in the Skin: Origin, Biological Characteristics, Homeostatic Maintenance and Therapeutic Potential

27 citations , May 2024 in “Clinical and Translational Medicine”

This review discusses the origin, characteristics, and therapeutic potential of melanocyte stem cells in skin pigmentation disorders and reports no clinical results.

Microneedle-Mediated Delivery of Immunomodulators Restores Immune Privilege in Hair Follicles and Reverses Immune-Mediated Alopecia

research Microneedle-Mediated Delivery of Immunomodulators Restores Immune Privilege in Hair Follicles and Reverses Immune-Mediated Alopecia

2 citations , April 2024 in “Advanced Materials”

This study tested a hydrogel microneedle patch delivering T reg attractants in mice with alopecia, finding it boosted regulatory T cell numbers at the site, leading to hair regrowth without causing peripheral immunosuppression, suggesting a potential new approach for autoimmune skin disease treatment.

research Pathogenesis of Alopecia Areata and Vitiligo: Commonalities and Differences

April 2024 in “International journal of molecular sciences”

This study examines the similarities and differences in the pathogenesis of autoimmune conditions alopecia areata and vitiligo, highlighting shared features like immune cell involvement and cytokine pathways, while noting differing immune responses in skin and hair.

research Functional Interrogation of Lymphocyte Subsets in Alopecia Areata Using Single-Cell RNA Sequencing

23 citations , July 2023 in “Proceedings of the National Academy of Sciences”

In this study using a mouse model and human data, researchers found that CD8+ T cells are central to driving alopecia areata, while regulatory T cells offer some protection, highlighting CD8+ T cells as key targets for future therapy development.

research Involvement of ILC1-Like Innate Lymphocytes in Human Autoimmunity: Lessons from Alopecia Areata

18 citations , February 2023 in “eLife”

This study indicates that innate lymphoid cells-type 1 may provoke alopecia areata by disrupting hair follicle immune privilege and inducing characteristic lesions, challenging the view that alopecia areata is purely an autoantigen-dependent, T cell-driven condition.

research AIRE Deficiency Leads to the Development of Alopecia Areata-Like Lesions in Mice

2 citations , October 2022 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study found that Aire‒/‒ mice spontaneously developed persistent AA-like lesions, highlighting a potential role for AIRE in hair follicle biology and pathogenesis of alopecia areata.

research A Mouse Model of Vitiligo Based on Endogenous Auto-Reactive CD8+ T Cell Targeting Skin Melanocyte

24 citations , October 2022 in “Cell Regeneration”

This study describes a new mouse model for vitiligo that mimics key clinical features such as skin depigmentation and CD8 + T cell infiltration, providing a useful tool for in-depth research and drug discovery.

research Autoantigen Discovery in the Hair Loss Disorder, Alopecia Areata: Implications of Post-Translational Modifications

11 citations , June 2022 in “Frontiers in immunology”

This review discusses the challenges in identifying specific hair follicle antigens involved in initiating alopecia areata and highlights the need for further research to understand its etiopathogenesis, reporting no new results.

research Alopecia Areata: An Update on Etiopathogenesis, Diagnosis, and Management

290 citations , August 2021 in “Clinical Reviews in Allergy & Immunology”

JAK inhibitors show promise for treating alopecia areata, but more research is needed.

research Immunology of Alopecia Areata

23 citations , November 2020 in “Central-European Journal of Immunology/Central European Journal of Immunology”

This review explores the autoimmune hypothesis of alopecia areata and the possible genetic and melanogenesis-associated autoantigens, but reports no new clinical findings.

research Hair Follicle Immune Privilege and Its Collapse in Alopecia Areata

134 citations , July 2020 in “Experimental dermatology”

This review discusses immune privilege in anagen hair follicles and its collapse in alopecia areata, emphasizing the importance of restoring this function for effective management and disease relapse prevention.

research A Transcriptomic Map of Murine and Human Alopecia Areata

26 citations , May 2020 in “JCI Insight”

In this study, single-cell sequencing revealed clonal expansions of CD4+ and CD8+ T cells in murine and human alopecia areata, supporting the development of predictive models for human disease.

research Regulatory T-Cells in Alopecia Areata

21 citations , April 2019 in “Journal of cutaneous pathology”

This study found a significant reduction in Treg cell frequency in alopecia areata compared to other autoimmune and non-autoimmune skin diseases using immunohistochemical staining.

research High-Throughput T Cell Receptor Sequencing Identifies Clonally Expanded CD8+ T Cell Populations in Alopecia Areata

46 citations , October 2018 in “JCI insight”

In this study, the researchers found that treatment with the JAK inhibitor tofacitinib in alopecia areata patients may reduce clonal CD8+ T cell expansions but does not eliminate them entirely, which could contribute to disease relapse.

research The Early Repigmentation Pattern of Vitiligo Is Related to the Source of Melanocytes and the Choice of Therapy: A Retrospective Cohort Study

6 citations , January 2018 in “International Journal of Dermatology”

This study observed that different vitiligo lesions display varying repigmentation patterns, which are associated with the extent of depigmentation, sun exposure, lesion stage, and type of therapy used.

research Patchy Alopecia Areata Sparing Gray Hairs: A Case Series

13 citations , January 2014 in “Postępy Dermatologii i Alergologii”

This report describes four cases of patchy, non-scarring alopecia areata that spared gray hairs and affected only pigmented hairs.