Lobe-specific proteome changes in the dorsal-lateral and ventral prostate of TRAMP mice versus wild-type mice

Jinhui Zhang, Lei Wang, Yong Zhang, Li Li, Leeann Higgins, Junxuan Lü

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10 Scopus citations

Abstract

The transgenic adenocarcinoma of mouse prostate (TRAMP) is the most widely used transgenic model for prostate cancer chemoprevention studies. Although two lobe-specific lineages of carcinogenesis have been described, the molecular mechanisms are still poorly defined. Here, we concurrently profiled the proteome of dorsal-lateral (DLP) and ventral (VP) prostate lobes of both TRAMP and littermate WT C57BL/6 mice of 18wk by 2-D LC-MALDI-TOF/TOF with iTRAQ labeling. A total of 483 and 748 proteins were identified at critical false discovery rates of 1 and 5%. In WT mice, 84 proteins were found to have different expression levels between DLP and VP. In TRAMP mice, 118 proteins significantly changed in DLP and/or VP during TRAMP carcinogenesis. Among them, 55 and 36 proteins were uniquely changed in DLP or VP lobe, respectively, and 27 proteins in both DLP and LP lobe. Ingenuity Pathway Analysis was able to segregate proteins changed in two lobes into different pathway networks. In addition to serving as reference for prostate proteomic profiles, our data suggest that different sets of proteins are involved in the carcinogenesis in DLP versus VP in the TRAMP model.

Original languageEnglish (US)
Pages (from-to)2542-2549
Number of pages8
JournalProteomics
Volume11
Issue number12
DOIs
StatePublished - Jun 1 2011

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All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology

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