| Description | LS513 is a colorectal carcinoma cell line isolated in 1985 from a primary tumor biopsy from a 63 year old Caucasian male patient diagnosed with a Dukes C mucin secreting cecal tumor located at the Bauhin valve. Approximately 50% of LS513 cells express surface carcinoembryonic antigen (CEA). LS513 cells express the major histocompatibility (MHC) class I antigens HLA and beta 2 microglobulin. MHC class II antigens (HLA-DR, DQ, and DP were not detected). TGF beta-1 is inhibitory for proliferation of LS513 cells, whereas TGF beta-2 has no effect on the growth of these cells. LS513 cells are 100-fold less sensitive to TGF beta-1 than the LS-1034 cell line. LS513 cells are multidrug resistant (MDR) and are tumorigenic in nude mice. Colony forming efficiency was 30% in methylcellulose. |
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