Introduction: Long noncoding RNAs (lncRNAs) have been implicated in the pathogenesis of allergic rhinitis (AR). The current investigation is focused on elucidating the functional impact of a specific lncRNA, FGD5 antisense RNA 1 (FGD5-AS1), on the development and progression of AR through its interaction with miR-223-3p. Methods: An experimental framework for AR was constructed in both cellular and animal models. Quantitative assessment of FGD5-AS1, miR-223-3p, and COX11 mRNA expression was conducted using real-time quantitative reverse transcription PCR. The expression of inflammatory factors, immunoglobulin E, LTC4, and ECP, was examined using ELISA. Apoptosis in human nasal epithelial cells was assessed by the flow cytometry method. The protein expression of COX11 was examined using Western blotting. Nasal mucosal function was further evaluated by hematoxylin and eosin staining. Furthermore, bioinformatics evaluations, dual-luciferase reporter assays, and a series of experimental procedures unveiled a putative competitive endogenous RNA regulatory mechanism. Results: We found the expression of lncRNA FGD5-AS1 was decreased in AR. In vitro lncRNA FGD5-AS1 attenuated the production of inflammatory cytokines in nasal epithelial cells. Furthermore, elevated FGD5-AS1 expression significantly alleviated AR symptoms by reducing nasal epithelial apoptosis and inflammation. MiR-223-3p was identified as a direct target of FGD5-AS1. Moreover, miRNA-223-3p directly downregulated the expression of COX11 mRNA. Subsequent experiments confirmed that FGD5-AS1 regulated AR through the miR-223-3p/COX11 axis, thereby inhibiting inflammation. Conclusion: The FGD5-AS1/miR-223-3p/COX11 axis plays a pivotal role in the pathogenesis of AR, suggesting that FGD5-AS1 could serve as a potential diagnostic biomarker and therapeutic target for AR.

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