Abstract
Castration-resistant prostate cancer (CRPC) nearly inevitably develops after long-term treatment with androgen deprivation therapy (ADT), leading to significant mortality. Investigating the mechanisms driving CRPC development is imperative. Here, we determined that the pioneer transcription factor GATA2, which is frequently amplified in CRPC patients, inhibits interferon (IFN)-β-mediated antitumor immunity, thereby promoting CRPC progression. Employing a genetically engineered mouse model (GEMM), we demonstrated that GATA2 overexpression hindered castration-induced cell apoptosis and tumor shrinkage, facilitating tumor metastasis and CRPC development. Notably, GATA2 drives castration resistance predominantly via repressing castration-induced activation of IFN-β signaling and CD8+ T-cell infiltration. This finding aligns with the negative correlation between GATA2 expression and IFNB1 expression, as well as CD8+ T-cell infiltration in CRPC patients. Mechanistically, GATA2 recruited PIAS1 as corepressor, and reprogramed the cistrome of IRF3, a key transcription factor of the IFN-β axis, in an androgen-independent manner. Furthermore, we identified a novel silencer element that facilitated the function of GATA2 and PIAS1 through looping to the IFNB1 promoter. Importantly, depletion of GATA2 augmented antitumor immunity and attenuated CRPC development. Consequently, our findings elucidate a novel mechanism wherein GATA2 promotes CRPC progression by suppressing IFN-β axis-mediated antitumor immunity, underscoring GATA2 as a promising therapeutic target for CRPC.
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Data availability
The authors declare that all data supporting the findings of this study are available within the article and its Supplementary Information files or from the corresponding author upon reasonable request. The experimental data that support the findings of this study are available through FigShare https://doi.org/10.6084/m9.figshare.25203209. The raw sequencing data reported in this paper have been deposited in the Genome Sequence Archive (GSA) at the National Genomics Data Center, China National Center for Bioinformation/Beijing Institute of Genomics, Chinese Academy of Sciences, under accession numbers HRA004978 and CRA011658, which are publicly accessible at https://ngdc.cncb.ac.cn/gsa.
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Acknowledgements
We thank professors Ming-jer Tsai and Sophia Tsai at Baylor College of Medicine for the kind gift of GATA2OE+ mice and editorial assistance. We also thank Cheng-Tai Yu and the Genetically Engineered Mouse Core at Baylor College of Medicine for generating GATA2OE+ mice. We appreciate the technical support of the Center for Scientific Research in the School of Life Sciences, Anhui Medical University. This work was supported by a grant from the National Natural Science Foundation of China project (82073256), a talent start-up program and a research and innovation talent team from Anhui Medical University.
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XM and JQ conceived and designed the experimental approach and prepared the manuscript as senior authors. JZ, WH, TR and PB performed most experiments. LH and LS performed a specific subset of the experiments and analyses. WL contributed to the computational statistical analysis.
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All animal procedures were performed under a protocol (AN-1002) approved by the Institutional Animal Care and Use Committee of Baylor College of Medicine or a protocol (LLSC20200389) approved by the Institutional Animal Care and Use Committee of Anhui Medical University.
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Jin, Z., Wang, H., Tang, R. et al. GATA2 promotes castration-resistant prostate cancer development by suppressing IFN-β axis-mediated antitumor immunity. Oncogene 43, 2595–2610 (2024). https://doi.org/10.1038/s41388-024-03107-z
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DOI: https://doi.org/10.1038/s41388-024-03107-z