Abstract
Breast cancer (BC) remains a leading cause of cancer-related mortality, largely due to its aggressive proliferation and metastatic potential. Long non-coding RNAs (lncRNAs) have emerged as key regulators in tumor development and progression. This study explored the functional role and mechanism of Lnc-PRSS23-AS1 in BC. We assessed Lnc-PRSS23-AS1 expression and localization using fluorescence in situ hybridization, qRT-PCR, and Western blotting in BC tissues and cell lines. Binding interactions between Lnc-PRSS23-AS1, miR-3176, and Y-box binding protein 1 (YBX1) were validated through dual-luciferase reporter assays, RNA pulldown, and RNA immunoprecipitation. Lnc-PRSS23-AS1 was significantly upregulated in BC and predominantly localized in the cytoplasm. Silencing Lnc-PRSS23-AS1 or overexpressing miR-3176 suppressed BC cell proliferation, migration, and invasion in vitro and in vivo. Conversely, miR-3176 inhibition or YBX1 overexpression reversed these effects. Mechanistically, Lnc-PRSS23-AS1 promoted YBX1 protein expression by acting as a molecular sponge for miR-3176. These findings highlight the Lnc-PRSS23-AS1/miR-3176/YBX1 axis as a driver of BC progression and suggest Lnc-PRSS23-AS1 as a potential therapeutic target for breast cancer treatment.
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We would like to thank all laboratory members for their discussion of this manuscript.
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HY and FM conducted the molecular biology analyses, participated in designing the study and collecting clinical specimens, and drafted the manuscript. WM, JY, and WM collected clinical specimens, participated in data analysis, and performed statistical analyses. CZ and WM conceived and designed the study, participated in data analysis and coordination, and assisted in drafting the manuscript. All authors have read and approved the final manuscript.
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The present study received approval from the Sixth Medical Center of the PLA General Hospital (Beijing, China) and adhered to the Declaration of Helsinki. All procedures involving animal care and use were approved by the Experimental Animal Ethics Committee of the Beijing Geneline Bioscience Biotechnology Company and followed the National Policy on the Use of Laboratory Animals.
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Huang, Y., Feng, M., Jiang, Y. et al. Long non-coding RNA PRSS23-AS1 as ceRNA promotes breast cancer progression by regulating EMT via miR-3176 /YBX1 axis. Cancer Gene Ther 32, 1018–1029 (2025). https://doi.org/10.1038/s41417-025-00943-3
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DOI: https://doi.org/10.1038/s41417-025-00943-3