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- W1978746572 abstract "We investigated whether dysfunction of p53 and E-cadherin participate in invasiveness and metastasis of human gastric carcinoma. We examined twenty-five human gastric carcinomas for p53, E-cadherin, alpha- and beta-catenin gene alteration by the reverse transcription-polymerase chain reaction-single strand conformation polymorphism (RT-PCR-SSCP) method and sequencing analysis. Three samples (13%) showed p53 gene mutation (two missense mutations and 6 bp deletion). 25% (3/12) of the carcinomas with lymph node metastasis had p53 gene mutations. One sample (4%) showed E-cadherin silent mutation. We were not able to detect alpha- or beta-catenin gene alteration. Therefore we investigated tyrosine-phosphorylation of E-cadherin, a and beta-catenin. Tyrosine-phosphorylated beta-catenin was detected in 13% (2/15) of poorly differentiated carcinomas. These results suggest that the p53 gene mutations have some correlation with lymph node metastasis, and tyrosine phosphorylation of beta-catenin rather than cadherin/catenin gene mutation is at least partly responsible for the loosening of cell-cell contact and invasiveness of poorly differentiated carcinomas." @default.
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- W1978746572 date "1996-09-01" @default.
- W1978746572 modified "2023-10-16" @default.
- W1978746572 title "Mutations of p53, E-cadherin, alpha- and beta-catenin genes and tyrosine phosphorylation of beta-catenin in human gastric carcinomas" @default.
- W1978746572 doi "https://doi.org/10.3892/ijo.9.3.579" @default.
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