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Description
PYCARD Polyclonal Antibody. TMS1 (target of methylation-induced silencing) is a recently identified CpG island-associated gene that becomes hypermethylated and silenced in cells overexpressing DNA cytosine-5-methyltransferase-1 (1). TMS1 is aberrantly methylated and silenced in human breast cancer cells. Forty percent (11 of 27) of primary breast tumors exhibited aberrant methylation of TMS1. Ectopic expression of TMS1 induced apoptosis in 293 cells and inhibited the survival of human breast cancer cells. The methylation-mediated silencing of TMS1 may confer a survival advantage by allowing cells to escape from apoptosis, supporting a new role for aberrant methylation in breast tumorigenesis. TMS1 encodes a 22-kDa predicted protein containi