Abstract
Neuroendocrine prostate cancer (NEPC), a lethal subset of prostate cancer, is characterized by loss of AR signaling and resulting resistance to AR-targeted therapy during neuroendocrine transdifferentiation, for which the molecular mechanisms remain unclear. Here, we report that neuropilin 2 (NRP2) is upregulated in both de novo and therapy-induced NEPC, which induces neuroendocrine markers, neuroendocrine cell morphology, and NEPC cell aggressive behavior. NRP2 silencing restricted NEPC tumor xenograft growth. Mechanistically, NRP2 engages in reciprocal crosstalk with AR, where NRP2 is transcriptionally inhibited by AR, and in turn suppresses AR signaling by downregulating the AR transcriptional program and confers resistance to enzalutamide. Moreover, NRP2 physically interacts with VEGFR2 through the intracellular SEA domain to activate STAT3 phosphorylation and subsequently SOX2, thus driving NEPC differentiation and growth. Collectively, these results characterize NRP2 as a driver of NEPC and suggest NRP2 as a potential therapeutic target in NEPC.
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Acknowledgements
This work was supported by the Department of Defense Prostate Cancer Research Program grant W81XWH-19-1-0279, NIH/NCI grant R37CA233658, and WSU startup funding to B.J.W. We thank Yidi Xu (Washington State University) for providing technical assistance, Mahul Amin (Cedars-Sinai Medical Center) for providing NEPC clinical samples, and Gary Mawyer for editorial assistance.
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B.J.W. conceived the study. J. Wang, J.L., and B.J.W. designed the experiments. J. Wang, J.L., L.Y., T.P. J. Wei, and V.K. performed the experiments. J. Wang, J.L., L.Y., and B.J.W. analyzed the data. T.-P.L. provided human CRPC tissue microarrays. A.C.G. provided control and ENZR C4-2B cells. B.J.W. wrote the manuscript, supervised the study, and acquired funding.
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Wang, J., Li, J., Yin, L. et al. Neuropilin-2 promotes lineage plasticity and progression to neuroendocrine prostate cancer. Oncogene 41, 4307–4317 (2022). https://doi.org/10.1038/s41388-022-02437-0
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DOI: https://doi.org/10.1038/s41388-022-02437-0