1. Salmonella Manipulation of Host Signaling Pathways Provokes Cellular Transformation Associated with Gallbladder Carcinoma.
- Author
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Scanu T, Spaapen RM, Bakker JM, Pratap CB, Wu LE, Hofland I, Broeks A, Shukla VK, Kumar M, Janssen H, Song JY, Neefjes-Borst EA, te Riele H, Holden DW, Nath G, and Neefjes J
- Subjects
- Animals, Case-Control Studies, Cell Transformation, Neoplastic, Colonic Neoplasms microbiology, Fibroblasts microbiology, Fibroblasts pathology, Gallbladder Neoplasms metabolism, Gallbladder Neoplasms microbiology, Humans, India, MAP Kinase Signaling System, Mice, Knockout, Mice, Mutant Strains, Netherlands, Proto-Oncogene Proteins c-myc metabolism, Salmonella Infections complications, Salmonella Infections genetics, Salmonella Infections microbiology, Salmonella enterica metabolism, Salmonella typhi genetics, Salmonella typhi metabolism, Salmonella typhi pathogenicity, Signal Transduction, Gallbladder Neoplasms pathology, Host-Pathogen Interactions, Salmonella Infections pathology, Salmonella enterica pathogenicity
- Abstract
Cancer is fueled by deregulation of signaling pathways in control of cellular growth and proliferation. These pathways are also targeted by infectious pathogens en route to establishing infection. Gallbladder carcinoma (GBC) is frequent in the Indian subcontinent, with chronic Salmonella enterica serovar Typhi infection reported as a significant risk factor. However, direct association and causal mechanisms between Salmonella Typhi infection and GBC have not been established. Deconstructing the epidemiological association between GBC and Salmonella Typhi infection, we show that Salmonella enterica induces malignant transformation in predisposed mice, murine gallbladder organoids, and fibroblasts, with TP53 mutations and c-MYC amplification. Mechanistically, activation of MAPK and AKT pathways, mediated by Salmonella enterica effectors secreted during infection, is critical to both ignite and sustain transformation, consistent with observations in GBC patients from India. Collectively, our findings indicate that Salmonella enterica can promote transformation of genetically predisposed cells and is a causative agent of GBC., (Copyright © 2015 Elsevier Inc. All rights reserved.)
- Published
- 2015
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