| Primary Identifier | MGI:3050871 | Allele Type | Transgenic |
| Attribute String | Inserted expressed sequence | Gene | Tg(MMTV-Erbb2)NK1Mul |
| Strain of Origin | FVB/N | Is Recombinase | false |
| Is Wild Type | false |
| description | Tumor formation in transgenic mice is multifocal, stochastic, and matches the expression pattern of the transgene. While no transgene expression is detected at 5 and 8 weeks of age in normal mammary gland tissue, expression is detected in adenocarcinomas from older (23 week old) mice. 50% of transgenic mice derived from this founder line develop tumors within 6-12 months of age. |
| molecularNote | This transgene contains the MMTV (mouse mammary tumor virus) LTR promoter, a 4.6 kb cDNA from the rat Erbb2 (avian erythroblastosis B2) oncogene, and an SV40 polyadenylation site sequence. The activated form of the rat gene is used in this construct, which differs from the wild-type allele by a point mutation, Val664Glu. Non-uniform and random transgene expression is detected by RNase protection assay in mammary gland epithelium from hemizygous transgenic mice. Six transgenic lines were produced (NA, NB, NF, NK, NL and NM). |
