Identification of p53 gene mutations in gastrointestinal and pancreatic carcinoids by nonradioisotopic SSCA
| Autor: | Armin Funk, Dietmar R. Lohmann, Stephanie Häupel, Heinz Höfler, Hans P. Niedermeyer |
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| Rok vydání: | 1993 |
| Předmět: |
medicine.medical_specialty
Pathology Molecular Sequence Data Carcinoid Tumor Biology Gene mutation medicine.disease_cause Polymerase Chain Reaction chemistry.chemical_compound medicine Humans Deoxyribonucleases Type II Site-Specific Gene Gastrointestinal Neoplasms Mutation Base Sequence Cytogenetics Single-strand conformation polymorphism DNA Neoplasm Genes p53 Pancreatic Neoplasms medicine.anatomical_structure chemistry Cancer research Nucleic Acid Conformation Pancreas Carcinogenesis DNA |
| Zdroj: | Virchows Archiv B Cell Pathology Including Molecular Pathology. 64:293-296 |
| ISSN: | 0042-6431 |
| Popis: | A nonisotopic screening method based on single-strand DNA conformation analysis (SSCA) was established for the identification of p53 gene alterations in achieved tissue samples. The sensitivity of this approach was validated by testing mutations previously identified by direct sequencing. Applying this assay, 40 samples of formalin-fixed, paraffin-embedded tumors, including 33 gastrointestinal carcinoids and seven endocrine pancreatic tumors, were screened. Only one mutation (codon 283, CGC to CCC) was identified in a single clinically benign rectal carcinoid. This mutation occurred during the development of the tumor and was accompanied by loss of the wild-type gene. Our data indicate, that, in contrast to gastrointestinal carcinomas, alterations of the p53 gene are infrequent events in the development of gastrointestinal and pancreatic carcinoids. In addition, there was no evidence for the involvement of p53 in the malignant metastatic progression of carcinoids. |
| Databáze: | OpenAIRE |
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