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MiRNA profile of exosomes released from PC-3 cells compared to parent cells

ABSTRACT: Exosomes are small extracellular vesicles released through fusion of multivesicular bodies with the plasma membrane. The aim of this study was to investigate whether there are any differences in miRNAs in exosomes secreted from the prostate cancer cell line PC-3 and in parent cells, as well as to investigate whether there are any differences in miRNAs in cell lysates from PC-3 cells and the non-cancerous prostate cell line RWPE-1.

ORGANISM(S): Merkel cell polyomavirus Mus musculus Human gammaherpesvirus 8 JC polyomavirus Rattus norvegicus Betapolyomavirus macacae Murid gammaherpesvirus 4 Homo sapiens Human immunodeficiency virus 1 Human betaherpesvirus 5 Human alphaherpesvirus 2 Betapolyomavirus hominis Human alphaherpesvirus 1 human gammaherpesvirus 4 Mus musculus cytomegalovirus 2 Murid betaherpesvirus 1

PROVIDER: GSE35813 | GEO | 2015/02/12

SECONDARY ACCESSION(S): PRJNA152565

REPOSITORIES: GEO

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Project description:BACKGROUND. Human prostate cancer LNCaP and PC-3 cell lines have been extensively used as prostate cancer cell models to study prostate cancer progression and to develop therapeutic agents. Although LNCaP and PC-3 cells are generally assumed to represent early and late stages of prostate cancer development, respectively, there is limited information regarding comprehensive gene expression patterns between these two cells lines and relating these cells to prostate cancer progression based on their gene expression. METHODS. Comprehensive gene expression analysis was performed in LNCaP and PC-3 cells. Total RNA was isolated from cultured cells and hybridized to Illumina human Ref-8 version 3 BeadChips representing 24,526 transcripts. Bioinformatics approach was applied to identify genes, their functional roles and interaction networks that are unique in either LNCaP or PC-3 cells. RESULTS. We observed large differences in gene expression between LNCaP and PC-3 cells.Using robust statistical analysis and very high significance criteria to identify tractable number of genes 115 and 188 genes were identified uniquely expressed in LNCaP and PC-3 cells, respectively. Genes uniquely expressed in LNCaP cells contained UDP-glucosyltransferases as a signature for this cell line. This cell line demonstrated upregulation of various metabolic pathways on gene expression level. Talα/β, GATA-1 and c-Myc/Max were identified by in silico analysis as possible transcription factors regulating unique LNCaP genes. PC-3 cells were characterized by cytosceleton-related genes, keratins in particular. Several other well known genes (VEGFC, IL8, TGFβ2 and others) scattered throughout literature were identified and summarized in the discussion. CONCLUSIONS. This study demonstrated that LNCaP and PC-3 cells represent two distinct prostate cancer cell lineages. LNCaP cells retain many prostate cell specific properties, whereas PC-3 cells have acquired more aggressive bone-like characteristics following bone metastasis and show little resemblance to prostate cells. Microarray studies confirmed previously published results and provided more information between these two prostate cancer cell lines. Future studies need to consider their similarities and differences in gene expression between localized and metastasized prostate cancer.

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MiRNA profile of exosomes released from PC-3 cells compared to parent cells

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