BAC clone NC1-269B17 which containing about 120 kb of ACI/NJcl rat-derived Casp3 (caspase 3) was injected into F344/Jcl embryos. The founder rat was backcrossed into F344/Jcl rat to establish the transgenic strain.
This transgenic rat possesses one copy of BAC clone. Hemizygous rat expresses higher level of Casp3 protein in adenocarcinoma of the large intestine than that of wild type rat. This transgenic rat is lower susceptible to PhIP-induced ACF (aberrant crypt foci) formation than the wild-type rat