Am. J. Respir. Cell Mol. Biol., Vol 16, No. 1, 01 1997, 9-13.
Absence of p53 mutations in malignant mesotheliomas
O Mor, P Yaron, M Huszar, A Yellin, O Jakobovitz, F Brok-Simoni, G Rechavi and N Reichert
Molecular Biology Laboratory, Chaim Sheba Medical Center, Ramat Gan, Israel.
Mutations in the p53 gene are the most common genetic alterations found in
human malignancies. In this study, a search was done for mutations in the
conserved regions of the p53 gene in malignant mesotheliomas. Thirteen
malignant mesotheliomas collected over the preceding 12 yr and maintained
in paraffin blocks were examined by polymerase chain reaction (PCR)
followed by both single-strand conformation polymorphism (SSCP) and
denaturing gradient-gel electrophoresis (DGGE). Direct sequence analysis
was performed in cases suspected for mutations. No mutations in exons 5 to
8 of the p53 gene were detected. Our results suggest that malignant
transformation of human mesothelioma cells does not require inactivation of
p53 by point mutations in the conserved regions of the gene.
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Copyright © 1997 American Thoracic Society.
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