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  11. Transcriptomic Profiling Of Vitiligo Patients Shows Polar Immune Dysregulation In Involved And Uninvolved Skin

Transcriptomic profiling of vitiligo patients shows polar immune dysregulation in involved and uninvolved skin

Patrick M Brunner1, Eden David1, Ester Del Duca2

  • 1Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.

The Journal of Allergy and Clinical Immunology
|June 13, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

Vitiligo involves more than just Th1/IFN immune responses. Early skin changes in vitiligo show increased type 2 immune markers, suggesting their role in initial lesion development.

Area of Science:

  • Dermatology
  • Immunology
  • Genomics
Keywords:
RNA sequencingTh2Vitiligomelanogenesis

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Background:

  • Vitiligo is a chronic autoimmune skin disorder impacting quality of life.
  • Current treatments are limited, with only one topical JAK inhibitor approved.
  • While Th1/IFN responses are implicated, other immune pathways in vitiligo pathogenesis are unclear.

Purpose of the Study:

  • To comprehensively profile the skin's gene expression in vitiligo lesions and non-lesional skin.
  • To identify novel immune pathways involved in vitiligo development and progression.

Main Methods:

  • Bulk RNA-sequencing of skin biopsies from 15 vitiligo patients (lesional and non-lesional) and 14 controls.
  • Real-time PCR and immunohistochemistry for validation.
  • Single-cell RNA sequencing to confirm findings at the cellular level.

Main Results:

  • Significant inflammatory gene expression changes in both lesional and non-lesional vitiligo skin.
  • Upregulation of Th1, Th2, and Th17/22 markers in lesional skin.
  • Activation of Th1, Th2, and Th17/22 markers observed in non-lesional skin, indicating early immune dysregulation.
  • Clinical severity correlated with specific inflammatory mediators.
  • IL13 and IFNG expression localized to specific T cell populations.

Conclusions:

  • Vitiligo pathogenesis involves immune axes beyond Th1/Tc1.
  • Type 2 immune markers are upregulated in non-lesional skin, suggesting a role in early vitiligo lesion formation.
  • These findings expand understanding of vitiligo's complex immune underpinnings.
sc-RNA-seq
skin biomarkers