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Rocaglamide Suppresses Allergic Reactions by Regulating IL-4 Receptor Signaling.

Hyein Jo1, Misun Kim1, Jaewhoon Jeoung1

  • 1Department of Biochemistry, Kangwon National University, Chuncheon 24341, Republic of Korea.

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|February 26, 2025
PubMed
Summary
This summary is machine-generated.

Rocaglamide (Roc-A) suppresses allergic inflammation by inhibiting interleukin-4 receptor (IL-4R) signaling, offering potential for new anti-allergy therapeutics. This natural compound impacts key allergic pathways and macrophage polarization.

Keywords:
Rocaglamideallergic reactionsinterleukin-4 receptormiR-34amolecular docking

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Area of Science:

  • Immunology
  • Pharmacology
  • Natural Products Chemistry

Background:

  • Allergic inflammation exacerbates cancer progression.
  • Rocaglamide (Roc-A), a phytochemical from Aglaia species, exhibits anticancer properties.
  • The potential of Roc-A in modulating allergic inflammation is unexplored.

Purpose of the Study:

  • To investigate the effects of Roc-A on allergic inflammation.
  • To elucidate the molecular mechanisms underlying Roc-A's anti-allergic actions.
  • To explore the role of interleukin-4 receptor (IL-4R) in Roc-A's therapeutic potential.

Main Methods:

  • In vitro assays for allergic reaction hallmarks.
  • Passive cutaneous anaphylaxis (PCA) and passive systemic anaphylaxis (PSA) models.
  • RNA sequencing, molecular docking, and chromatin immunoprecipitation (ChIP) assays.
  • Analysis of macrophage polarization markers (M1/M2).

Main Results:

  • Roc-A inhibited antigen-induced allergic reactions in vitro and in vivo (PCA/PSA).
  • Roc-A suppressed the expression of IL-4 and IL-4R, and prevented IL-4R binding to JAK1.
  • Roc-A modulated macrophage polarization and influenced miR-34a expression, a negative regulator of IL-4R.
  • Molecular docking identified potential IL-4R binding chemicals, including 1536801, with anti-allergic effects.

Conclusions:

  • Roc-A demonstrates significant anti-allergic properties by targeting the IL-4R pathway.
  • The anti-allergic effects of Roc-A are linked to miR-34a regulation and modulation of macrophage polarization.
  • Targeting IL-4R offers a promising strategy for developing novel anti-allergy therapeutics.