Impact of prostate inflammation on lesion development in the POET3+ Pten+/- mouse model of prostate carcinogenesis

Grant N. Burcham, Gregory M. Cresswell, Paul W. Snyder, Long Chen, Xiaoqi Liu, Scott A. Crist, Michael D. Henry, Timothy L. Ratliff

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Evidence linking prostatitis and prostate cancer development is contradictory. To study this link, the POET3 mouse, an inducible model of prostatitis, was crossed with a Pten-loss model of prostate cancer (Pten+/-) containing the ROSA26 luciferase allele to monitor prostate size. Prostatitis was induced, and prostate bioluminescence was tracked over 12 months, with lesion development, inflammation, and cytokine expression analyzed at 4, 8, and 12 months and compared with mice without induction of prostatitis. Acute prostatitis led to more proliferative epithelium and enhanced bioluminescence. However, 4 months after initiation of prostatitis, mice with induced inflammation had lower grade pre-neoplastic lesions. A trend existed toward greater development of carcinoma 12 months after induction of inflammation, including one of two mice with carcinoma developing perineural invasion. Two of 18 mice at the later time points developed lesions with similarities to proliferative inflammatory atrophy, including one mouse with associated carcinoma. Pten+/- mice developed spontaneous inflammation, and prostatitis was similar among groups of mice at 8 and 12 months. Analyzed as one cohort, lesion number and grade were positively correlated with prostatitis. Specifically, amounts of CD11b+Gr1+ cells were correlated with lesion development. These results support the hypothesis that myeloid-based inflammation is associated with lesion development in the murine prostate, and previous bouts of CD8-driven prostatitis may promote invasion in the Pten+/- model of cancer.

Original languageEnglish
Pages (from-to)3176-3191
Number of pages16
JournalAmerican Journal of Pathology
Issue number12
StatePublished - Dec 1 2014

Bibliographical note

Publisher Copyright:
© 2014 American Society for Investigative Pathology. Published by Elsevier Inc. All rights reserved.

ASJC Scopus subject areas

  • Pathology and Forensic Medicine


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