title: Genetic detection for hematogenous micrometastasis in patients with various types of malignant tumors using Uroplakin II derived primers in polymerase chain reaction.
abstract: The presence of circulatory metastasis is one of the most significant factors for poor-prognosis in patients with several types of cancer. To establish a sensitive reverse transcription PCR assay to detect micrometastasis in blood containing several cancer types, we first investigated Uroplakin II (UP II), a novel molecular marker for human transitional cell carcinoma of the bladder, in 25 types of normal organs. In our study, UP II mRNA was detected in 10 types of organs, including bladder, kidney, lung and pancreas, but was not detected in normal lymph nodes or leukocytes. The data indicated evidence of UP II expression in various types of normal tissues by RT-nested PCR analysis. UP II mRNA was detected in 2 of 11 (18.2%) peripheral blood samples from lung cancer patients with no metastasis, and in 5 of 12 (41.7%) peripheral blood samples of lung cancer patients with metastasis. UP II was also detected in 6 of 16 (37.5%) peripheral blood samples of patients with pancreatic cancer. The data are particularly important in that the molecular detection of micrometastasis in the blood by means of UP II mRNA identification is feasible for UP II-positive neoplasms, including lung and pancreatic cancers.
authors.affiliation: Center for Molecular Biology and Cytogenetics, SRL, Inc., 5-6-50 Shin-machi Hino, Tokyo 191-0002, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Hirata
authors.forename: Hisashi
authors.initials: H
authors.lastname: Hisatomi
authors.forename: Mutsushi
authors.initials: M
authors.lastname: Kawakita
authors.forename: Kumi
authors.initials: K
authors.lastname: Nagao
authors.forename: Shigeki
authors.initials: S
authors.lastname: Yamamoto
authors.forename: Kazumasa
authors.initials: K
authors.lastname: Hikiji
authors.forename: Takaaki
authors.initials: T
authors.lastname: Nakamoto
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Harasawa
authors.forename: Noboru
authors.initials: N
authors.lastname: Kaneko
authors.forename: Tadashi
authors.initials: T
authors.lastname: Matsuda
authors.forename: Masahiro
authors.initials: M
authors.lastname: Yamamoto
authors.forename: Taichi
authors.initials: T
authors.lastname: Kanamaru
mesh_terms: D000328:Adult; D000368:Aged; D014408:Biomarkers, Tumor / Q000235:genetics*; D016022:Case-Control Studies; D017931:DNA Primers; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000097:blood*; D008297:Male; D008565:Membrane Proteins / Q000235:genetics*; D008875:Middle Aged; D008969:Molecular Sequence Data; D009362:Neoplasm Metastasis; D009360:Neoplastic Cells, Circulating; D010190:Pancreatic Neoplasms / Q000097:blood*; D016133:Polymerase Chain Reaction; D012333:RNA, Messenger / Q000097:blood*; D012680:Sensitivity and Specificity; D060170:Uroplakin II
chemical_list: D014408:Biomarkers, Tumor; D017931:DNA Primers; D008565:Membrane Proteins; D012333:RNA, Messenger; C554658:UPK2 protein, human; D060170:Uroplakin II