

E-cadherin is involved in the formation of cell-junctions and the maintenance of epithelial integrity. Direct evidence of E-cadherin mutations triggering tumorigenesis has come from the finding of inactivating germline mutations of the gene (CDH1) in hereditary diffuse gastric cancer (HDGC). We screened a series of 66 young gastric cancer probands for germline CDH1 mutations, and two novel missense alterations together with an intronic variant were identified. We then analysed the functional significance of the exonic missense variants found here as well as a third germline missense variant that we previously identified in a HGDC family. cDNAs encoding either the wild-type protein or mutant forms of E-cadherin were stably transfected into CHO (Chinese hamster ovary) E-cadherin-negative cells. Transfected cell-lines were characterized in terms of aggregation, motility and invasion. We show that a proportion of apparently sporadic early-onset diffuse gastric carcinomas are associated with germline alterations of the E-cadherin gene. We also demonstrate that a proportion of missense variants are associated with significant functional consequences, suggesting that our cell model can be used as an adjunct in deciding on the potential pathogenic role of identified E-cadherin germline alterations.
| EMTREE drug terms: | complementary DNAuvomorulin |
|---|---|
| EMTREE medical terms: | adultarticlecancer patientcarcinogenesiscell aggregationcell invasioncell junctioncell linecell motilityCHO cellcontrolled studydisease modelexonfemalegene functiongene inactivationgene mutationgenetic analysisgenetic associationgenetic screeninggenetic transfectiongenetic variabilitygerm lineheredityhumanhuman cellintronmajor clinical studymalemedical decision makingmissense mutationmultigene familynucleotide sequencepriority journalprotein functionstomach cancerwild type |
| MeSH: | AdultAnimalsCadherinsCarbohydrate DehydrogenasesCHO CellsCricetinaeFemaleHumansMaleMiddle AgedMutation, MissenseStomach Neoplasms |
| Species Index: | CricetinaeCricetulus griseus |
EMBL,
Z13009(referenced)uvomorulin, 112956-45-3;
Cadherins; Carbohydrate Dehydrogenases, EC 1.1.-; cellobiose-quinone oxidoreductase, EC 1.1.99.18
| Funding sponsor | Funding number | Acronym |
|---|---|---|
| Fonds Wetenschappelijk Onderzoek | ||
| Cancer Research UK See opportunities | ||
| Fundação para a Ciência e a Tecnologia See opportunities | POCTI/CBO/40820/2001,POCTI/35374/CBO/2000 |
This study was funded by grants from: Fundac¸ão para a Ciência e a Tecnologia, Portugal (projects: POCTI/35374/CBO/2000 and POCTI/CBO/40820/2001); FORTIS Verzekerngen and the Fund for Scientific Research, Flanders (FWO), Brussels, Belgium; and by Cancer Research UK.
Caldas, C.; Cancer Genomics Program, Department of Oncology, University of Cambridge, United Kingdom;
© Copyright 2008 Elsevier B.V., All rights reserved.
© MEDLINE® is the source for the MeSH terms of this document.