Systematic name M6195
Brief description Proteins implicated in prostate carcinogenesis.
Full description or abstract Successful treatment of multiple cancer types requires early detection and identification of reliable biomarkers present in specific cancer tissues. To test the feasibility of identifying proteins from archival cancer tissues, we have developed a methodology, termed direct tissue proteomics (DTP), which can be used to identify proteins directly from formalin-fixed paraffin-embedded prostate cancer tissue samples. Using minute prostate biopsy sections, we demonstrate the identification of 428 prostate-expressed proteins using the shotgun method. Because the DTP method is not quantitative, we employed the absolute quantification method and demonstrate picogram level quantification of prostate-specific antigen. In depth bioinformatics analysis of these expressed proteins affords the categorization of metabolic pathways that may be important for distinct stages of prostate carcinogenesis. Furthermore, we validate Wnt-3 as an upregulated protein in cancerous prostate cells by immunohistochemistry. We propose that this general strategy provides a roadmap for successful identification of critical molecular targets of multiple cancer types.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 16799640   Authors: Hwang SI,Thumar J,Lundgren DH,Rezaul K,Mayya V,Wu L,Eng J,Wright ME,Han DK
Exact source Table 3S
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Source species Homo sapiens
Contributed by Arthur Liberzon (MSigDB Team)
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Version history 3.0: First introduced

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