title: Modulation of S-100 genes response to growth conditions in human epithelial tumor cells.
abstract: Many new members of the S-100 genes are known to be associated with cell differentiation, malignant transformation, and cell cycle. Of the S-100 genes examined in the present study, calcyclin, calpactin I light chain and calvasculin were expressed in most human epithelial tumor cells, and their expression levels differed according to various growth conditions. Their transcribed levels differed depending on each cell line, but their expression patterns were similarly changed under growth-modulatory conditions. Their messenger RNA levels increased parallel to the S phase population of cells, and decreased at G1/G2 phases. In contrast, this expression diminished in tumor cells under growth-inhibitory conditions, such as treatment with topoisomerase II inhibitor VP-16 or phorbol 12-myristate 13-acetate.
authors.affiliation: First Department of Pathology, Ehime University School of Medicine, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Matsumoto
authors.forename: S
authors.initials: S
authors.lastname: Murao
authors.forename: K
authors.initials: K
authors.lastname: Kito
authors.forename: T
authors.initials: T
authors.lastname: Kihana
authors.forename: S
authors.initials: S
authors.lastname: Matsuura
authors.forename: N
authors.initials: N
authors.lastname: Ueda
mesh_terms: D017302:Annexins / Q000378:metabolism; D015152:Blotting, Northern; D002135:Calcium-Binding Proteins / Q000378:metabolism; D002453:Cell Cycle; D018797:Cell Cycle Proteins; D005047:Etoposide / Q000494:pharmacology; D016193:G1 Phase; D016195:G2 Phase; D015972:Gene Expression Regulation, Neoplastic; D019073:HT29 Cells; D006367:HeLa Cells; D006801:Humans; D009375:Neoplasms, Glandular and Epithelial / Q000235:genetics* / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism; D016196:S Phase; D000075383:S100 Calcium Binding Protein A6; D000071999:S100 Calcium-Binding Protein A4; D009418:S100 Proteins / Q000235:genetics* / Q000378:metabolism; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D013997:Time Factors; D014407:Tumor Cells, Cultured
chemical_list: D017302:Annexins; D002135:Calcium-Binding Proteins; D018797:Cell Cycle Proteins; D012333:RNA, Messenger; D000075383:S100 Calcium Binding Protein A6; D000071999:S100 Calcium-Binding Protein A4; D009418:S100 Proteins; C055351:S100A6 protein, human; C077591:S100A4 protein, human; D005047:Etoposide; D013755:Tetradecanoylphorbol Acetate