Schwann cell hyperplasia and tumors in transgenic mice expressing a naturally occurring mutant NF2 protein
AUTOR(ES)
Giovannini, Marco
FONTE
Cold Spring Harbor Laboratory Press
RESUMO
Specific mutations in some tumor suppressor genes such as p53 can act in a dominant fashion. We tested whether this mechanism may also apply for the neurofibromatosis type-2 gene (NF2) which, when mutated, leads to schwannoma development. Transgenic mice were generated that express, in Schwann cells, mutant NF2 proteins prototypic of natural mutants observed in humans. Mice expressing a NF2 protein with an interstitial deletion in the amino-terminal domain showed high prevalence of Schwann cell-derived tumors and Schwann cell hyperplasia, whereas those expressing a carboxy-terminally truncated protein were normal. Our results indicate that a subset of mutant NF2 alleles observed in patients may encode products with dominant properties when overexpressed in specific cell lineages.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=316642Documentos Relacionados
- Cloning and Characterization of SCHIP-1, a Novel Protein Interacting Specifically with Spliced Isoforms and Naturally Occurring Mutant NF2 Proteins
- Mice heterozygous for a mutation at the Nf2 tumor suppressor locus develop a range of highly metastatic tumors
- Lymphoid and mesenchymal tumors in transgenic mice expressing the v-fps protein-tyrosine kinase.
- Serial transmission in rodents of neurodegeneration from transgenic mice expressing mutant prion protein.
- Induction of mammary gland hyperplasia and carcinomas in transgenic mice expressing human cyclin E.
