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Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2025,9,2]]},"abstract":"<jats:p>Inadequate response to androgen deprivation therapy (ADT) frequently arises in prostate cancer, driven by cellular mechanisms that remain poorly understood. Here, we integrated single-cell RNA sequencing, single-cell multiomics, and spatial transcriptomics to define the transcriptional, epigenetic, and spatial basis of cell identity and castration response in the mouse prostate. Leveraging these data along with a meta-analysis of human prostates and prostate cancer (PCa), we identified cellular orthologs and key determinants of ADT response and resistance. Our findings reveal that mouse prostates harbor lobe-specific luminal epithelial cell types distinguished by unique gene regulatory modules and anatomically defined androgen-responsive transcriptional programs, indicative of divergent developmental origins. Androgen-insensitive, stem-like epithelial populations\u2014resembling human club and hillock cells\u2014are notably enriched in the urethra and ventral prostate but are rare in other lobes. Within the ventral prostate, we also uncovered two additional androgen-responsive luminal epithelial cell types, marked by Pbsn or Spink1 expression, which align with human luminal subsets and may define the origin of distinct PCa subtypes. Castration profoundly reshaped luminal epithelial transcriptomes, with castration-resistant luminal epithelial cells activating stress-responsive and stemness programs. These transcriptional signatures are enriched in tumor cells from ADT-treated and castration-resistant PCa patients, underscoring their likely role in driving treatment resistance. Temporal tracking of cells will precisely map disease-associated cellular transitions, and our technical framework facilitates such interrogations. Collectively, our comprehensive cellular atlas of the mouse prostate illuminates the importance of lobe-specific contexts for PCa modeling and reveals potential therapeutic targets to counter castration resistance.<\/jats:p>","DOI":"10.1073\/pnas.2427116122","type":"journal-article","created":{"date-parts":[[2025,8,25]],"date-time":"2025-08-25T19:06:57Z","timestamp":1756148817000},"update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":4,"title":["Cellular cartography reveals mouse prostate organization and determinants of castration resistance"],"prefix":"10.1073","volume":"122","author":[{"given":"Hanbyul","family":"Cho","sequence":"first","affiliation":[{"name":"Michigan Center for Translational Pathology, University of Michigan","place":["Ann Arbor"]},{"name":"Department of Pathology, University of Michigan","place":["Ann Arbor"]},{"name":"Department of Computational Medicine and Bioinformatics, University of Michigan","place":["Ann 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