Prostate Cancer Secretome and Membrane Proteome from Pten Conditional Knockout Mice Identify Potential Biomarkers for Disease Progression

Author(s)

Santos, Nilton J. ; Camargo, Ana Carolina Lima ; Carvalho, Hernandes F. ; Justulin, Luis Antonio ; Felisbino, Sergio Luis

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES; v. 23, n. 16, p. 26-pg., 2022-08-01.

Abstract

Prostate cancer (PCa) is the second most common cause of mortality among men. Tumor secretome is a promising strategy for understanding the biology of tumor cells and providing markers for disease progression and patient outcomes. Here, transcriptomic-based secretome analysis was performed on the PCa tumor transcriptome of Genetically Engineered Mouse Model (GEMM) Pb-Cre4/Pten(f/f) mice to identify potentially secreted and membrane proteins-PSPs and PMPs. We combined a selection of transcripts from the GSE 94574 dataset and a list of protein-coding genes of the secretome and membrane proteome datasets using the Human Protein Atlas Secretome. Notably, nine deregulated PMPs and PSPs were identified in PCa (DMPK, PLN, KCNQ5, KCNQ4, MYOC, WIF1, BMP7, F3, and MUC1). We verified the gene expression patterns of Differentially Expressed Genes (DEGs) in normal and tumoral human samples using the GEPIA tool. DMPK, KCNQ4, and WIF1 targets were downregulated in PCa samples and in the GSE dataset. A significant association between shorter survival and KCNQ4, PLN, WIF1, and F3 expression was detected in the MSKCC dataset. We further identified six validated miRNAs (mmu-miR-6962-3p, mmu-miR- 6989-3p, mmu-miR-6998-3p, mmu-miR-5627-5p, mmu-miR-15a-3p, and mmu-miR-6922-3p) interactions that target MYOC, KCNQ5, MUC1, and F3. We have characterized the PCa secretome and membrane proteome and have spotted new dysregulated target candidates in PCa. (AU)

• FAPESP's process: 19/19644-1 - Prostate cancer: involvement of adiponectin and type X collagen pathways
• Grantee: Sérgio Luis Felisbino
• Support Opportunities: Regular Research Grants
• FAPESP's process: 19/05952-6 - Intestinal metaplasia in prostate cancer: incidence and multiplicity in the prostate from transgenic mice with conditional deletion for the PTEN gene
• Grantee: Pedro Pol Ximenes
• Support Opportunities: Scholarships in Brazil - Scientific Initiation