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Related Concept Videos

Effects of Exposure of Formaldehyde to a Rat Model of Atopic Dermatitis Induced by Neonatal Capsaicin Treatment06:47

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Related Experiment Video

Updated: Jan 20, 2026

Effects of Exposure of Formaldehyde to a Rat Model of Atopic Dermatitis Induced by Neonatal Capsaicin Treatment
06:47

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Engineered atopic dermatitis models for recreating hypoxic conditions in atopic dermatitis microenvironments.

Kyeong Seok Na1, Jooyoung Park2, Su Min Kim3

  • 1Department of Bioengineering and Nano-Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea.

Bioactive Materials
|January 19, 2026
PubMed
Summary

Researchers developed novel gelatin-based hydrogel models that mimic atopic dermatitis (AD) tissue. These preclinical models replicate AD

Keywords:
Atopic dermatitisDorsal root ganglionEngineered skin tissue modelsHypoxiaPolymeric hydrogelsSingle-cell RNA sequencing analysis

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Last Updated: Jan 20, 2026

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Area of Science:

  • Biomaterials Engineering
  • Dermatology
  • Immunology

Background:

  • Atopic dermatitis (AD) is a chronic inflammatory skin condition characterized by severe itching.
  • Predicting clinical outcomes in AD is challenging due to its complex physiology and pathogenesis.
  • There is a critical need for preclinical models that accurately replicate AD features.

Purpose of the Study:

  • To engineer gelatin-based in situ crosslinkable hydrogel models that mimic AD tissue characteristics.
  • To validate key AD features in patient data, including fibroblast expression, nerve interactions, and hypoxia.
  • To establish a 3D cell culture system for simulating the AD microenvironment and facilitating research.

Main Methods:

  • Single-cell RNA sequencing analysis of patient data to identify key AD markers.
  • Fabrication of 3D cell culture systems using gelatin-based in situ crosslinked hydrogels.
  • Recreation of the AD microenvironment within hydrogels using IL-4 treatment and controlled hypoxia.

Main Results:

  • Confirmed overexpression of collagen type VI alpha 5 chain (COL6A5+) fibroblasts, itch-inducing dorsal root ganglion interactions, and hypoxia-related factors in AD tissues.
  • Engineered hydrogel models successfully replicated a hypoxic environment (pO2 < 5%) with upregulated hypoxia-related genes.
  • The models demonstrated induced immune responses, chronic hypoxia, and overexpression of itch-related factors, allowing for drug response evaluation.

Conclusions:

  • Gelatin-based in situ crosslinkable hydrogel models effectively replicate key features of atopic dermatitis.
  • These engineered models provide a valuable platform for preclinical drug screening and fundamental research in AD.
  • The developed models offer a promising approach to better understand AD pathogenesis and evaluate therapeutic interventions.