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iPSC-Derived MSC Secretome as a Protective and Restorative Modality for Atopic Dermatitis.

Seungah Yoo1, Hyun Jin Baek2, Narae Park2

  • 1Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea, catholic.ac.kr.

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|January 7, 2026
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Summary

Secretory substances from induced pluripotent stem cell (iPSC)-derived mesenchymal stem cells (iMSCs) show promise for treating atopic dermatitis (AD). This iMSC secretome reduced inflammation and improved skin barrier function in both cell cultures and an AD mouse model.

Keywords:
atopic dermatitisiPSC-derived mesenchymal stem cellregenerationsecretomestem cell

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Area of Science:

  • Stem cell biology
  • Dermatology
  • Immunology

Background:

  • Atopic dermatitis (AD) is a chronic inflammatory skin condition impacting quality of life.
  • Management focuses on reducing inflammation and restoring skin barrier function.

Purpose of the Study:

  • Investigate the protective and therapeutic potential of iMSC secretome in AD.
  • Evaluate iMSC secretome's effects on skin cells and in an AD mouse model.

Main Methods:

  • In vitro: HaCaT cells treated with iMSC secretome to assess viability, biomarker expression, and migration.
  • In vivo: DNCB-induced AD mouse model treated with iMSC secretome for clinical, histological, and immunological analysis.
  • Proteomic analysis to identify underlying biological mechanisms.

Main Results:

  • iMSC secretome reduced AD-induced cell death and biomarker expression in vitro.
  • High-dose iMSC secretome improved clinical indicators in the AD mouse model.
  • Reduced serum IgE, IL-4, IL-31, IL-6 levels and skin AD biomarkers; proteomic analysis revealed immune regulation and skin barrier restoration.

Conclusions:

  • iMSC secretome exhibits significant anti-inflammatory and regenerative properties.
  • This suggests iMSC secretome is a potential therapeutic agent for atopic dermatitis.