Reduced p21WAF1/CIP1 expression and p53 mutation in hepatocellular carcinomas
A M Hui, Y Kanai, M Sakamoto, H Tsuda, S Hirohashi – 30 December 2003 – p21WAF1/CIP1 is a universal cyclin‐dependent kinase (cdk) inhibitor, the expression of which is regulated by p53‐dependent and p53‐independent pathways. We examined p21WAF1/CIP1 expression in and p53 status of 21 primary hepatocellular carcinomas (HCCs) by reverse‐transcriptase polymerase chain reaction (RT‐PCR) and by PCR single‐strand conformation polymorphism (PCR‐SSCP) analysis. p21WAF1/CIP1 messenger RNA expression was reduced markedly in 8 of 21 HCCs (38.1%) and 5 of these 8 HCCs bore p53 mutations.