title: Expression of PSA-RP2, an alternatively spliced variant from the PSA gene, is increased in prostate cancer tissues but the protein is not secreted from prostate cancer cells.
abstract: PSA-RP2 is a variant transcript expressed from the PSA gene that is conserved in gorillas, chimpanzees and humans suggesting a particular relevance for this transcript in these primates. We demonstrated by qRT-PCR that PSA-RP2 is upregulated in prostate cancer compared with benign prostatic hyperplasia tissues. The PSA-RP2 protein was not detected in seminal fluid and was cytoplasmically localised but not secreted from LNCaP or transfected PC3 prostate cells, despite secretion from transfected Cos-7 and HEK293 kidney cell lines. PSA-RP2-transfected PC3 cells showed slightly decreased proliferation and increased migration towards PC3-conditioned medium that could suggest a functional role in prostate cancer.
authors.affiliation: Institute of Health and Biomedical Innovation and School of Life Sciences, Queensland University of Technology, Australia.
authors.forename: Astrid K
authors.initials: AK
authors.lastname: Whitbread
authors.forename: Tara L
authors.initials: TL
authors.lastname: Veveris-Lowe
authors.forename: Ying
authors.initials: Y
authors.lastname: Dong
authors.forename: Olivia L
authors.initials: OL
authors.lastname: Tan
authors.forename: Robert
authors.initials: R
authors.lastname: Gardiner
authors.forename: Hema M
authors.initials: HM
authors.lastname: Samaratunga
authors.forename: David L
authors.initials: DL
authors.lastname: Nicol
authors.forename: Judith A
authors.initials: JA
authors.lastname: Clements
mesh_terms: D000595:Amino Acid Sequence; D045744:Cell Line, Tumor; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D008297:Male; D008969:Molecular Sequence Data; D017430:Prostate-Specific Antigen / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D011471:Prostatic Neoplasms / Q000235:genetics* / Q000378:metabolism / Q000473:pathology*; D020033:Protein Isoforms / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D021381:Protein Transport
chemical_list: D020033:Protein Isoforms; D017430:Prostate-Specific Antigen