BACKGROUND: The third isoform of metallothionein (MT-3) is overexpressed in prostate cancers and PIN lesions. The expression of MT-3 is highly variable but appears to correlate to Gleason score. The goal of the present study was to determine the effect of MT-3 overexpression on the growth of the PC-3 prostate cancer cell line. METHODS: PC-3 cells were stably transfected with either the MT-3 or MT-1E gene. Cell growth was determined by counting DAPI-stained nuclei, drug resistance by the colony formation assay, MT mRNA expression by reverse transcriptase-polymerase chain reaction, and MT protein by immunoblot. RESULTS: PC-3 cells that overexpress the MT-3 gene are growth inhibited compared with either untransfected cells, cells with blank vector, or cells with similar overexpression of the MT-1E gene. Furthermore, increased chemotherapeutic drug resistance occurred in PC-3 clones derived from MT-3- and MT-1E-transfected cells. CONCLUSION: The overexpression of MT-3 can influence the growth and chemotherapeutic drug resistance of the PC-3 prostate cancer cell line. Copyright 2002 Wiley-Liss, Inc.
BACKGROUND: The third isoform of metallothionein (MT-3) is overexpressed in prostate cancers and PIN lesions. The expression of MT-3 is highly variable but appears to correlate to Gleason score. The goal of the present study was to determine the effect of MT-3 overexpression on the growth of the PC-3 prostate cancer cell line. METHODS: PC-3 cells were stably transfected with either the MT-3 or MT-1E gene. Cell growth was determined by counting DAPI-stained nuclei, drug resistance by the colony formation assay, MT mRNA expression by reverse transcriptase-polymerase chain reaction, and MT protein by immunoblot. RESULTS: PC-3 cells that overexpress the MT-3 gene are growth inhibited compared with either untransfected cells, cells with blank vector, or cells with similar overexpression of the MT-1E gene. Furthermore, increased chemotherapeutic drug resistance occurred in PC-3 clones derived from MT-3- and MT-1E-transfected cells. CONCLUSION: The overexpression of MT-3 can influence the growth and chemotherapeutic drug resistance of the PC-3 prostate cancer cell line. Copyright 2002 Wiley-Liss, Inc.
Authors: Seema Somji; Scott H Garrett; Xu Dong Zhou; Yun Zheng; Donald A Sens; Mary Ann Sens Journal: Toxicol Environ Chem Date: 2010-10 Impact factor: 1.437
Authors: Eric Smith; Paul A Drew; Zi-Qing Tian; Neville J De Young; Jun-Feng Liu; George C Mayne; Andrew R Ruszkiewicz; David I Watson; Glyn G Jamieson Journal: Mol Cancer Date: 2005-12-13 Impact factor: 27.401