ArticleRespiratory research2025
REDD1 mediates HDM-induced nuclear-cytoplasmic translocation and release of IL-33 in airway epithelial cells by downregulating Nrf2.
Article in Respiratory research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- DDIT4 upregulation associates with gammadelta T Cells dysfunction in ART-suppressed people living with HIV-1.BMC infectious diseases · 2026Article
- Identification of Quality Markers in Viola kunawaresis Royel Using HPLC Fingerprints, Chemometric Analysis, and Network Pharmacology.Biomedical chromatography : BMC · 2026Article
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8 authors.
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Abstract
objectiveThis study aims to investigate whether REDD1 (Regulated in Development and DNA Damage Responses 1) mediates the nuclear-to-cytoplasmic translocation and release of IL-33 in airway epithelial cells induced by house dust mites (HDM).
methodsREDD1 expression levels in bronchial asthma patients were validated using public databases, followed by immunohistochemical analysis of REDD1 protein in airway epithelial cells from these patients. An asthma model was then established using HDM-induced 16HBE cell lines, with REDD1 gene knockout performed. The relationship between varying levels of REDD1 expression, Nrf2, and related inflammatory factors was assessed using Western blot and qPCR. To further investigate the role of the REDD1-Nrf2-IL-33 axis in the development of asthma, we employed Nrf2 activators and inhibitors to reassess the impact of REDD1 on IL-33.
resultsAt both mRNA and protein levels, we found that REDD1 was significantly overexpressed in samples from asthma patients (P < 0.05). In vitro, 24-hour exposure to HDM induced a notable nuclear-to-cytoplasmic translocation of IL-33 and increased its levels in the culture medium of 16HBE cells. In addition, HDM treatment significantly upregulated the expression of both REDD1 and Nrf2. Knockdown of REDD1 markedly suppressed HDM-induced IL-33 release and the expression of TNF-α, IL-6, and IL-1β, while enhancing Nrf2 expression. Moreover, treatment with the Nrf2 agonist curcumin inhibited HDM-induced nuclear-to-cytoplasmic translocation and extracellular secretion of IL-33, whereas the opposite effect was observed when using the Nrf2 antagonist ML385.
conclusionThis study reveals the crucial regulatory role of the REDD1-Nrf2-IL-33 axis in the pathological process of bronchial asthma. REDD1 modulates the expression of IL-33 and other inflammatory factors through the Nrf2 signaling pathway, thereby influencing the onset and progression of asthma. CLINICAL TRIAL NUMBER: Not applicable.
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