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- W2577927323 abstract "792 Continuously growing lines of cancer cells have been invaluable for studies on various types of cancer. For prostate cancer, only a few different lines are available. We have derived three new prostate cancer cell lines from tissues obtained at the time of prostatectomy. The tissues were cut into small pieces with sterile scissors placed in keratinocyte serum free medium (KSFM), centrifuged, resuspended in KSFM and layered onto tissue culture plastic pre-coated with FCS. Growth was achieved by culturing the disrupted tissue in KSFM supplemented with huEGF and 2% FCS. When cell proliferation was evident, the cells were exposed to a replication-defective retrovirus transferring the transforming HPV16 or HPV18 E6 and E7 genes, as well as neoR, conferring Geneticin®-resistance. Transformed cells were then selected using Geneticin®. All primary cultures were maintained through crisis until a viable permanent cell line had been established. These lines are termed OPCT-1, OPCT-2 and OPCT-3. In a similar way, three new immortalized normal prostate epithelial cell lines have been derived from prostatectomy tissue. These lines are OPCN-1, OPCN-2 and OPCN-3. The doubling times (Td), calculated from a series of growth curves, suggest that the tumor lines proliferate more rapidly than the normal lines with Td of 1.1 ± 0.02 (SEM) days for OPCT-1, 1.8 ± 0.2 days for OPCT-2 and 1.9 ± 0.3 days for OPCT-3 compared to 2.7 ± 0.5 of OPCN-1, 2.9 ± 0.5 for OPCN-2 and 2.5 ± 0.5 days for OPCN-3. Immunohistochemistry results indicate that OPCT-1 is positive for cytokeratins 18 (CK18+), 5 and 8 (CK5/8+), vimentin, MUC-1 and flotillin. It is negative for desmin, alpha smooth muscle actin, and factor 8. The other lines have similar profiles for these markers, although OPCT-2 and OPCN-1 are only weakly positive for flotillin and OPCN-2 appears to be negative. For MUC-1, OPCN-2 and OPCT-2 are weekly positive. All lines appear to be negative for androgen receptor and positive for prostate stem cell antigen (PSCA). OPCT-2 is negative for PSA whereas the other three lines appear to be weakly positive. OPCT-3 and OPCN-3 have not been examined yet. These lines should be valuable tools for prostate cancer research. This work was supported in part by Asterand, Inc., Detroit, MI 48201." @default.
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- W2577927323 date "2004-04-01" @default.
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- W2577927323 title "Derivation and initial characterization of three new prostate cancer cell lines and three new immortalized normal prostate epithelial cell lines" @default.
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