Comparison of p53 and DNA content abnormalities in adenocarcinoma of the oesophagus and gastric cardia

被引:71
作者
Gleeson, CM
Sloan, JM
McManus, DT
Maxwell, P
Arthur, K
McGuigan, JA
Ritchie, AJ
Russell, SEH
机构
[1] Queens Univ Belfast, Belfast City Hosp, Dept Med Genet, Belfast BT9 7AB, Antrim, North Ireland
[2] Royal Hosp Trust, Reg Thorac Unit, Belfast BT12 6BJ, Antrim, North Ireland
[3] Royal Hosp Trust, Dept Pathol, Belfast BT12 6BJ, Antrim, North Ireland
关键词
adenocarcinoma; oesophagus; gastric cardia; Barrett's oesophagus; p53;
D O I
10.1038/bjc.1998.44
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
This study examined the association between 17p allelic loss, p53 gene mutation, p53 protein expression and DNA aneuploidy in a series of adenocarcinomas arising in the oesophagus and gastric cardia. 17p allelic loss was detected in 79% (15 of 19) of oesophageal and in 83% (29 of 35) of gastric adenocarcinomas. p53 mutations were detected in 70% (14 of 20) and 63% (26 of 41) of oesophageal and of gastric adenocarcinomas respectively. Both tumour types were associated with a predominance of base transitions at CpG dinucleotides. In five cases of oesophageal adenocarcinoma, the same mutation was detected both in tumour and in adjacent dysplastic Barrett's epithelium. Diffuse p53 protein expression was detected in 65% (13 of 20) and 59% (24 of 41) of oesophageal and of gastric tumours, respectively, and was associated with the presence of p53 missense mutation (Chi-squared, P < 0.0001). DNA aneuploidy was detected in 80% (16 of 20) of oesophageal and in 70% (28 of 40) of gastric tumours. No association was found between p53 or DNA content abnormalities and tumour stage or histological subtype. In conclusion, this study detected a similar pattern of p53 alterations in adenocarcinoma of the oesophagus and gastric cardia-molecular data consistent with the observation that these tumours demonstrate similar clinical and epidemiological features.
引用
收藏
页码:277 / 286
页数:10
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