Malignant fibrous histiocytomas and H-ras-1 oncogene point mutations.
AUTOR(ES)
Rieske, P
RESUMO
AIMS: To investigate the types and the frequencies of H-ras-1 gene mutations in malignant fibrous histiocytomas. METHODS: Thirty five samples of malignant fibrous histiocytoma tissue were searched for point mutations within "hot spot" codons 12 and 13 of the H-ras-1 oncogene by the specific "nested" polymerase chain reaction followed by restriction fragment length polymorphism (PCR-RFLP) and a direct cycle sequencing procedure. RESULTS: In contrast to previous reports, none of the tumours contained a point mutation or any other changes within or around the hot spot gene sequences. CONCLUSIONS: These data indicate that H-ras-1 oncogenic activation is not required in the molecular pathway of malignant fibrous histiocytoma formation and cannot be used as a discriminating factor for diagnostic sarcoma typing.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=395675Documentos Relacionados
- Malignant fibrous histiocytomas of salivary glands
- Novel revertants of H-ras oncogene-transformed R6-PKC3 cells.
- Reversible abrogation of IL-3 dependence by an inducible H-ras oncogene.
- Human herpesvirus 6A ts suppresses both transformation by H-ras and transcription by the H-ras and human immunodeficiency virus type 1 promoters.
- Mammalian assay for site-specific DNA damage processing using the human H-ras proto-oncogene.