Little consideration has been given to the possibility that there could be variations in protein expression that alter susceptibility to tumorigenesis without causing other obvious phenotypic effects. Therefore, we sought to determine if haploinsufficiency for the anti-apoptotic protein Bcl-x(L) would affect tumorigenesis. We chose to study Bcl-x(L) because although bcl-x+/- mice were thought to be phenotypically normal, we and others found that haploinsufficiency for Bcl-x(L) lowers fibroblast resistance to apoptosis in tissue culture.
View Article and Find Full Text PDF