Metastatic prostate cancer (PCa) remains a major cause of cancer deaths in western men. Although androgen deprivation therapy (ADT) initially induces remissions, patients ultimately develop uncurable castration resistance, underscoring the need for alternative or complementary therapeutic strategies. Protein-protein interactions (PPIs) play a central role in oncogenic signaling, and aberrant protein dimerization is increasingly recognized as a critical driver of PCa progression and therapeutic resistance. Both homodimeric and heterodimeric protein complexes regulate key pathways involved in androgen receptor signaling, transcriptional control, and adaptation to tumor microenvironmental stress. Here, we review current evidence for oncogenic dimerization events in PCa and discuss their relevance for PCa progression. We highlight how similar dimeric interactions have been successfully targeted for therapy in other malignancies, with several strategies advancing to late-stage clinical trials or regulatory approval, underscoring their translational potential for PCa. We summarize approaches to modulate dimerization and highlight their mechanisms of action, therapeutic advantages, and inherent limitations. By combining pre-clinical and clinical findings with conceptual therapeutic frameworks, this review outlines the opportunities and limitations of targeting protein dimerization in PCa. Collectively, we propose that rational disruption of oncogenic homo- and heterodimers represents an underexplored yet promising therapeutic strategy that could complement existing treatments and help overcome resistance in advanced PCa.
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Nidhi Singh
Hannelore V. Heemers
Endocrinology
Cleveland Clinic
Cleveland Clinic Lerner College of Medicine
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Singh et al. (Fri,) studied this question.
www.synapsesocial.com/papers/69fd7f0dbfa21ec5bbf07701 — DOI: https://doi.org/10.1210/endocr/bqag056