Expression of mutant p53 protein in hepatocellular carcinoma.

Abstract:

:p53 mutations are a common genetic finding in hepatocellular carcinoma from areas of high aflatoxin exposure. Recent small studies have shown that p53 gene mutations may be less common in areas with a low prevalence of hepatocellular carcinoma such as Great Britain. The protein product of mutant p53 can be detected immunohistochemically because of its longer half life in comparison with native protein. This study used a novel monoclonal antibody DO-7, raised against recombinant p53 and effective in routinely processed biopsy specimen tissue, to detect the mutant protein in a series of 45 cases of hepatocellular carcinoma occurring in white subjects resident in the United Kingdom. Focal nuclear labelling was seen in four cases (9%); surrounding cirrhotic tissue in one of these was negative for p53 expression. This study shows that p53 mutations are a rare event in hepatocarcinogenesis in Great Britain, an area of low aflatoxin exposure, and supports the concept of geographical variations in the cause and pathogenesis of hepatocellular carcinoma.

journal_name

Gut

journal_title

Gut

authors

Collier JD,Carpenter M,Burt AD,Bassendine MF

doi

10.1136/gut.35.1.98

subject

Has Abstract

pub_date

1994-01-01 00:00:00

pages

98-100

issue

1

eissn

0017-5749

issn

1468-3288

journal_volume

35

pub_type

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