title: A mouse model of human oral-esophageal cancer.
abstract: Squamous cancers of the oral cavity and esophagus are common worldwide, but no good genetically based animal model exists. A number of environmental factors as well as genetic alterations have been identified in these cancers, yet the specific combination of genetic events required for cancer progression remains unknown. The Epstein-Barr virus ED-L2 promoter (L2) can be used to target genes in a specific fashion to the oral-esophageal squamous epithelium. To that end, we generated L2-cyclin D1 (L2D1(+)) mice and crossbred these with p53-deficient mice. Whereas L2D1(+) mice exhibit a histologic phenotype of oral-esophageal dysplasia, the combination of cyclin D1 expression and p53 deficiency results in invasive oral-esophageal cancer. The development of the precancerous lesions was significantly reversed by the application of sulindac in the drinking water of the L2D1(+)/p53(+/-) mice. Furthermore, cell lines derived from oral epithelia of L2D1(+)/p53(+/-) and L2D1(+)/p53(-/-) mice, but not control mice, formed tumors in athymic nude mice. These data demonstrate that L2D1(+)/p53(+/-) mice provide a well-defined, novel, and faithful model of oral-esophageal cancer, which allows for the testing of novel chemopreventive, diagnostic, and therapeutic approaches.
authors.affiliation: Division of Gastroenterology, Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
authors.forename: Oliver G
authors.initials: OG
authors.lastname: Opitz
authors.forename: Hideki
authors.initials: H
authors.lastname: Harada
authors.forename: Yasir
authors.initials: Y
authors.lastname: Suliman
authors.forename: Ben
authors.initials: B
authors.lastname: Rhoades
authors.forename: Norman E
authors.initials: NE
authors.lastname: Sharpless
authors.forename: Ralph
authors.initials: R
authors.lastname: Kent
authors.forename: Levy
authors.initials: L
authors.lastname: Kopelovich
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nakagawa
authors.forename: Anil K
authors.initials: AK
authors.lastname: Rustgi
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000627:therapeutic use; D019938:Cyclin D1 / Q000235:genetics / Q000378:metabolism; D004195:Disease Models, Animal; D066246:ErbB Receptors / Q000235:genetics / Q000378:metabolism; D004938:Esophageal Neoplasms / Q000188:drug therapy / Q000235:genetics* / Q000473:pathology; D005838:Genotype; D004854:Herpesvirus 4, Human / Q000235:genetics; D006801:Humans; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D008819:Mice, Nude; D008822:Mice, Transgenic; D009062:Mouth Neoplasms / Q000188:drug therapy / Q000235:genetics* / Q000473:pathology; D018307:Neoplasms, Squamous Cell / Q000188:drug therapy / Q000235:genetics* / Q000473:pathology; D011401:Promoter Regions, Genetic; D013467:Sulindac / Q000627:therapeutic use; D014407:Tumor Cells, Cultured; D016159:Tumor Suppressor Protein p53 / Q000235:genetics / Q000378:metabolism
chemical_list: D000970:Antineoplastic Agents; D016159:Tumor Suppressor Protein p53; D019938:Cyclin D1; D013467:Sulindac; D066246:ErbB Receptors