title: Trp-p8, a novel prostate-specific gene, is up-regulated in prostate cancer and other malignancies and shares high homology with transient receptor potential calcium channel proteins.
abstract: We have identified and cloned a novel gene, trp-p8, by screening a prostate-specific subtracted cDNA library. The 5694-bp cDNA has a 3312-bp open reading frame, which codes for a 1104 amino acid putative protein with seven transmembrane domains. The predicted protein revealed significant homology with the transient receptor potential (trp) family of Ca(2+) channel proteins. Northern blot analysis indicated that trp-p8 expression within normal human tissues is mostly restricted to prostate epithelial cells. In situ hybridization analysis showed that trp-p8 mRNA expression was at moderate levels in normal prostate tissue and appears to be elevated in prostate cancer. Notably, trp-p8 mRNA was also expressed in a number of nonprostatic primary tumors of breast, colon, lung, and skin origin, whereas transcripts encoding trp-p8 were hardly detected or not detected in the corresponding normal human tissues.
authors.affiliation: Dendreon Corporation, Seattle, Washington 98121, USA.
authors.forename: L
authors.initials: L
authors.lastname: Tsavaler
authors.forename: M H
authors.initials: MH
authors.lastname: Shapero
authors.forename: S
authors.initials: S
authors.lastname: Morkowski
authors.forename: R
authors.initials: R
authors.lastname: Laus
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D014408:Biomarkers, Tumor / Q000096:biosynthesis / Q000235:genetics; D019556:COS Cells; D015220:Calcium Channels / Q000096:biosynthesis / Q000235:genetics*; D003001:Cloning, Molecular; D006224:Cricetinae; D018076:DNA, Complementary / Q000235:genetics; D004273:DNA, Neoplasm / Q000235:genetics; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D017403:In Situ Hybridization; D007473:Ion Channels; D008297:Male; D008969:Molecular Sequence Data; D009363:Neoplasm Proteins / Q000096:biosynthesis / Q000235:genetics*; D009928:Organ Specificity; D011467:Prostate / Q000378:metabolism / Q000502:physiology*; D011471:Prostatic Neoplasms / Q000235:genetics* / Q000378:metabolism; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics; D017386:Sequence Homology, Amino Acid; D050053:TRPM Cation Channels; D014407:Tumor Cells, Cultured; D015854:Up-Regulation
chemical_list: D014408:Biomarkers, Tumor; D015220:Calcium Channels; D018076:DNA, Complementary; D004273:DNA, Neoplasm; D007473:Ion Channels; D009363:Neoplasm Proteins; D012333:RNA, Messenger; D050053:TRPM Cation Channels; C425966:TRPM8 protein, human