Abstract
Glioblastoma (GBM) is an incurable disease with a poor prognosis. However, the potential impact of steroid receptor coactivator-1 (SRC-1) on N6-methyladenosine (m6A) RNA modification and its role in promoting malignant progression in GBM remain unclear. The relationship between SRC-1 and the m6A “writer” protein, methyltransferase 3 (METTL3), was analyzed using data from the CGGA database. Dot blot and MeRIP‒qPCR were performed to evaluate the effects of SRC-1 knockdown or overexpression on the level of m6A modification in GBM. The biological functions of SRC-1 in regulating METTL3 in GBM were evaluated by assessing its effects on proliferation, migration, cell cycle, colony formation, and apoptosis in vitro and the tumor volume/weight of nude mice xenografted with GBM cells in vivo. Co-IP, immunofluorescence, dual-luciferase, and ChIP‒qPCR assays were subsequently conducted. By analyzing the CGGA database, we determined that SRC-1 has a close positive relationship with METTL3 in GBM. SRC-1 significantly increased the m6A RNA modification level in GBM, SRC-1 knockdown markedly inhibited c-Myc m6A methylation and mRNA stability by suppressing METTL3, and SRC-1 overexpression led to hypermethylation by increasing METTL3. SRC-1 knockdown inhibited the proliferation, migration, apoptosis resistance, and S and G2/M phases of GBM cells in vitro. Mechanically, SRC-1 interacted with the heterodimer of NF-κB p50/p65, whereby p65 activated METTL3 by directly binding to a specific region of its promoter (+18 to +27 bp), thereby increasing the m6A modification of c-Myc and ultimately promoting GBM progression. Importantly, both SRC-1 knockdown and treatment with bufalin, an SRC inhibitor, reduced GBM progression. In conclusion, this study provides the first comprehensive evidence that SRC-1 facilitates GBM progression by binding to NF-κB and regulating METTL3-mediated m6A modification of c-Myc, offering new insights into potential therapeutic strategies for GBM.

Schematic diagram of the mechanism revealed in this research. SRC-1 regulates METTL3-mediated m6A RNA modification of c-Myc to promote GBM progression by binding to the NF-κB transcription factor. Created in BioRender. https://BioRender.com.
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Data availability
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Change history
13 April 2026
The original online version of this article was revised: Following the publication of this article, the authors noted an error in the IP blots included in Figure 5F. The representative Co-IP blots for p50 in U87-MG cells and p65 in LN229 cells were inadvertently duplicated.
15 April 2026
A Correction to this paper has been published: https://doi.org/10.1038/s41388-026-03788-8
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Acknowledgements
This work was supported by the Postgraduate Training Fund of Dalian Medical University and the Educational Commission of Liaoning Province of China (No. LZ2019026).
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Liang Liu, Jinjin Pan, and Yuhui Yuan conceived and designed the experiments. Liang Liu, Rui Wang, Ke Cheng, Chunmei Bai, Yuke Ji, Yifei Zhang, Haoran Yang, Miaomiao Gong, Fang Xie, and Yongshun Zhao collected, analyzed, and interpreted the experimental data. Liang Liu and Rui Wang drafted the manuscript. Yongshun Zhao, Jinjin Pan, and Yuhui Yuan reviewed the manuscript. All the authors revised the manuscript critically and approved the final version.
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Liu, L., Wang, R., Cheng, K. et al. Steroid receptor coactivator-1 facilitates METTL3-mediated m6A modification by coactivating NF-κB and promotes the malignant progression of glioblastoma. Oncogene 44, 3333–3349 (2025). https://doi.org/10.1038/s41388-025-03494-x
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DOI: https://doi.org/10.1038/s41388-025-03494-x


