Abstract
Highly rearranged and mutated cancer genomes present major challenges in the identification of pathogenetic events driving the neoplastic transformation process. Here we engineered lymphoma-prone mice with chromosomal instability to assess the usefulness of mouse models in cancer gene discovery and the extent of cross-species overlap in cancer-associated copy number aberrations. Along with targeted re-sequencing, our comparative oncogenomic studies identified FBXW7 and PTEN to be commonly deleted both in murine lymphomas and in human T-cell acute lymphoblastic leukaemia/lymphoma (T-ALL). The murine cancers acquire widespread recurrent amplifications and deletions targeting loci syntenic to those not only in human T-ALL but also in diverse human haematopoietic, mesenchymal and epithelial tumours. These results indicate that murine and human tumours experience common biological processes driven by orthologous genetic events in their malignant evolution. The highly concordant nature of genomic events encourages the use of genomically unstable murine cancer models in the discovery of biological driver events in the human oncogenome.
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Acknowledgements
We thank Y. Zhang, A. Yu and K. Marmon for excellent mouse husbandry and care, and C. Greenman and E. Pleasance for helpful discussion on statistical analyses. R.S.M. was supported by the Damon Runyon Cancer Research Foundation. P.J.C. was supported by the Kay Kendall Leukaemia Fund, and B.C. is supported by a grant from GlaxoSmithKline. K.K.W. was supported by an NIH award. M.R.S. and P.A.F. are supported by the Wellcome Trust. L.C. and R.A.D. are supported by NIH grants, LeBow Fund to Cure Myeloma, the Chris Elliot Foundation, and the Center for Applied Cancer Science of the Belfer Institute for Innovative Cancer Science. R.A.D. is an Ellison Foundation for Medical Research Senior Scholar and an American Cancer Society Research Professor.
Author Contributions R.S.M., B.C., P.J.C. and B.F. performed the experiments and contributed equally as first authors. M.R.S., L.C., P.A.F. and R.A.D. supervised experiments and contributed equally as senior authors. R.S.M. and R.A.D. generated and characterized the instability mouse model. B.F. and L.C. conducted the oncogenomic analyses. B.C., P.J.C., M.R.S. and P.A.F. provided the re-sequencing analyses. A.P., J.O., A.G., E.I., I.P., E.L., V.M., S.J., K.M., S.Z., S.E., C.S., G.H., C.B., E.S.M., R.W., O.K., C.N., M.M. and V.D. performed experiments. A.G., L.F., A.K.F., A.H.G., J.M.R. and A.T.L. contributed patient samples and clinical data. K.K.W., J.A. and A.T.L. coordinated experiments. Y.A.W. contributed to the writing of the manuscript.
All microarray data are available at the Gene Expression Array Omnibus website (http://www.ncbi.nlm.nih.gov/geo/) under accession number GSE7615.
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Maser, R., Choudhury, B., Campbell, P. et al. Chromosomally unstable mouse tumours have genomic alterations similar to diverse human cancers. Nature 447, 966–971 (2007). https://doi.org/10.1038/nature05886
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DOI: https://doi.org/10.1038/nature05886
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