Rituximab Treatment Prevents Lymphoma Onset in Gastric Cancer Patient-Derived Xenografts.

Rituximab Treatment Prevents Lymphoma Onset in Gastric Cancer Patient-Derived Xenografts. Neoplasia. 2018 Mar 22;20(5):443-455 Authors: Corso S, Cargnelutti M, Durando S, Menegon S, Apicella M, Migliore C, Capeloa T, Ughetto S, Isella C, Medico E, Bertotti A, Sassi F, Sarotto I, Casorzo L, Pisacane A, Mangioni M, Sottile A, Degiuli M, Fumagalli U, Sgroi G, Molfino S, De Manzoni G, Rosati R, De Simone M, Marrelli D, Saragoni L, Rausei S, Pallabazzer G, Roviello F, Cassoni P, Sapino A, Bass A, Giordano S Abstract Patient-Derived Xenografts (PDXs), entailing implantation of cancer specimens in immunocompromised mice, are emerging as a valuable translational model that could help validate biologically relevant targets and assist the clinical development of novel therapeutic strategies for gastric cancer. More than 30% of PDXs generated from gastric carcinoma samples developed human B-cell lymphomas instead of gastric cancer. These lymphomas were monoclonal, Epstein Barr Virus (EBV) positive, originated tumorigenic cell cultures and displayed a mutational burden and an expression profile distinct from gastric adenocarcinomas. The ability of grafted samples to develop lymphomas did not correlate with patient outcome, nor with the histotype, the lymphocyte infiltration level, or the EBV status of the original gastric tumor, impeding from foreseeing lymphoma onset. Interestingly, lymphoma development was significantly more frequent when prim...
Source: Neoplasia - Category: Cancer & Oncology Authors: Tags: Neoplasia Source Type: research