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- W2049542986 abstract "p53 and E-cadherin mutations are associated with a high risk of metastatic potential and local recurrence after colorectal surgery. LoVo, a human colon cancer cell line expressing a wild-type p53 and a normal E-cadherin, was studied. Clone LoVo-XC17 was obtained from LoVo cells transfected with a vector bearing a p53 273his mutation. Clone LoVo-92R4 was obtained from LoVo by culture cells with an E-cadherin down-regulation. LoVo, LoVo-XC17, and LoVo-92R4 were studied for in vivo behavior in a surgical intracolonic graft model.Ten nude mice were used per cell line. A colonic tumor was obtained by tumor implantation into the cecal wall. The cecal tumor was resected at Day 15; at this time the volumes of the different tumors were similar.Surgical resection of the LoVo tumor led to 100 percent disease-free animals at one month. Surgical resection of mice grafted with the LoVo-XC17 line did not cure any mice (0/10; P = 0.001). Mice had local recurrences (10/10), mesenteric lymph node metastases (9/10), liver metastases (2/10), and peritoneal carcinomatosis (8/10). Surgical resection of LoVo-92R4 tumors led to cures in 30 percent (3/10), whereas 70 percent had isolated mesenteric lymph node metastases (7/10; P = 0.003).In this model surgical tumor resection was consistently effective for colonic tumors with functional p53 and E-cadherin, it was consistently ineffective with tumors displaying a mutated p53, and it was partially effective with E-cadherin-deficient tumors. This study shows that the alteration of a single gene can be associated with a profound alteration of surgical resection benefit." @default.
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- W2049542986 date "2001-08-01" @default.
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- W2049542986 title "Single alteration of p53 or E-cadherin genes can alter the surgical resection benefit in an experimental model of colon cancer" @default.
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- W2049542986 doi "https://doi.org/10.1007/bf02234630" @default.
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