Cited by 424Dermatology and Skin DiseasesPsoriasis: Treatment and PathogenesisContact Dermatitis and Allergies

Regulation of Filaggrin, Loricrin, and Involucrin by IL-4, IL-13, IL-17A, IL-22, AHR, and NRF2: Pathogenic Implications in Atopic Dermatitis

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Furue, Masutaka·2020·International Journal of Molecular Sciences

Abstract

Atopic dermatitis (AD) is an eczematous, pruritic skin disorder with extensive barrier dysfunction and elevated interleukin (IL)-4 and IL-13 signatures. The barrier dysfunction correlates with the downregulation of barrier-related molecules such as filaggrin (FLG), loricrin (LOR), and involucrin (IVL). IL-4 and IL-13 potently inhibit the expression of these molecules by activating signal transducer and activator of transcription (STAT)6 and STAT3. In addition to IL-4 and IL-13, IL-22 and IL-17A are probably involved in the barrier dysfunction by inhibiting the expression of these barrier-related molecules. In contrast, natural or medicinal ligands for aryl hydrocarbon receptor (AHR) are potent upregulators of FLG, LOR, and IVL expression. As IL-4, IL-13, IL-22, and IL-17A are all capable of inducing oxidative stress, antioxidative AHR agonists such as coal tar, glyteer, and tapinarof exert particular therapeutic efficacy for AD. These antioxidative AHR ligands are known to activate an antioxidative transcription factor, nuclear factor E2-related factor 2 (NRF2). This article focuses on the mechanisms by which FLG, LOR, and IVL expression is regulated by IL-4, IL-13, IL-22, and IL-17A. The author also summarizes how AHR and NRF2 dual activators exert their beneficial effects in the treatment of AD.

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  • Activation of NRF2 by AHR ligands such as coal tar abolishes IL-4/IL-13-mediated inhibition of epidermal barrier proteins such as FLG and LOR.

    “Activation of NRF2 by AHR ligands such as coal tar abolished IL-4/IL-13–mediated inhibition of epidermal barrier proteins such as FLG and LOR (42, 56).”

    From Particulate matter causes skin barrier dysfunction. (2021) · cites this paper as [42]

  • AhR ligands can also signal through Nrf2, a pleiotropic transcription factor involved in redox homeostasis, metabolism, and immune modulation.

    “AhR ligands can also signal via Nuclear factor erythroid 2-related factor 2 (Nrf2)48–51, a pleiotropic transcription factor involved in redox homeostasis, metabolism, and immune modulation52.”

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Authors
Furue, M.
Affiliations
Kyushu University (JP)
Corresponding author
Furue, Masutaka
Venue
International Journal of Molecular Sciences
Publisher
MDPI AG
Published
2020-07-29
Volume
21
Issue
15
Pages
5382
ISSN
1422-0067 (ISSN-L)
OpenAlex
W3046068546
Cited by
419
References
231
Citations by year
2026: 83 · 2025: 82 · 2024: 81 · 2023: 74 · 2022: 64 · 2021: 32 · 2020: 2
FWCI
7.19
Type
journal article
Language
en
Open access
Locations
  • International Journal of Molecular Sciences (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Ministry of Health, Labour and Welfare (H30-Shokuhin-Shitei-005)
  • Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan (C, FAG0K08692)
Topics
  • Health Sciences › Medicine › Dermatology › Dermatology and Skin Diseases
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
  • Health Sciences › Medicine › Dermatology › Contact Dermatitis and Allergies
Keywords
atopic dermatitis, filaggrin, loricrin, involucrin, skin barrier dysfunction, IL-4, IL-13, IL-17A, IL-22, aryl hydrocarbon receptor, Nrf2, STAT6, STAT3, oxidative stress, coal tar, tapinarof, AhR agonists
MeSH terms
Filaggrin Proteins, Interleukin-22, Antioxidants, Coal Tar, Dermatitis, Atopic, Gene Expression Regulation, Humans, Interleukins, Membrane Proteins, S100 Proteins, Protein Precursors, Resorcinols, Skin, Stilbenes, Tars, Signal Transduction, Interleukin-4, Receptors, Aryl Hydrocarbon, Oxidative Stress, Interleukin-13, Interleukin-17, STAT3 Transcription Factor, STAT6 Transcription Factor, NF-E2-Related Factor 2, Basic Helix-Loop-Helix Transcription Factors, Basic Helix-Loop-Helix Proteins

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