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Alteration of p53 Clonality Accompanying Colorectal Cancer Progression

The aim of this study was to clarify whether or not the status of gene alteration is heterogeneous in intramucosal carcinoma and homogeneous within invasive carcinoma. We selected 10 colorectal carcinoma cases (1 mucosal, 5 submucosal and 4 advanced carcinomas including 2 cases with lymph node metas...

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Detalles Bibliográficos
Autores principales: Kuwabara, Akifumi, Watanabe, Hidenobu, Ajioka, Yoichi, Yasuda, Kazuhiro, Saito, Hidetoshi, Matsuda, Keiji, Kijima, Hiroshi, Hatakeyama, Katuyoshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Blackwell Publishing Ltd 1998
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5921584/
https://www.ncbi.nlm.nih.gov/pubmed/9510474
http://dx.doi.org/10.1111/j.1349-7006.1998.tb00477.x
Descripción
Sumario:The aim of this study was to clarify whether or not the status of gene alteration is heterogeneous in intramucosal carcinoma and homogeneous within invasive carcinoma. We selected 10 colorectal carcinoma cases (1 mucosal, 5 submucosal and 4 advanced carcinomas including 2 cases with lymph node metastasis) and analyzed the p53 gene sequence. Six colorectal cancers in this study showed heterogeneity in p53 mutations in cells from the intramucosal part. In the invasive part of a carcinoma, p53 mutation status was homogeneous intratumorally in all cases. These data indicate that, in regard to p53 gene alterations, colorectal cancers can be composed of various subclones when limited to the mucosa, but clonal selection occurs when one of these subclones commences invasion to the submucosa, generating a monoclonal invasive carcinoma.