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Dynamic karyotype, dynamic proteome: buffering the effects of aneuploidy

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Donnelly,  Neysan
Storchova, Zuzana / Maintenance of Genome Stability, Max Planck Institute of Biochemistry, Max Planck Society;

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Storchova,  Zuzana
Storchova, Zuzana / Maintenance of Genome Stability, Max Planck Institute of Biochemistry, Max Planck Society;

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Zitation

Donnelly, N., & Storchova, Z. (2014). Dynamic karyotype, dynamic proteome: buffering the effects of aneuploidy. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH, 1843(2), 473-481. doi:10.1016/j.bbamcr2013.11.017.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0015-8705-0
Zusammenfassung
Despite its ubiquity in cancer, link with other pathologies, and role in promoting adaptive evolution, the effects of aneuploidy or imbalanced chromosomal content on cellular physiology have remained incompletely characterized. Significantly, it appears that the detrimental as well as beneficial effects of aneuploidy are due to the altered gene expression elicited by the aneuploid state. In this review we examine the correlation between chromosome copy number changes and gene expression in aneuploid cells. We discuss the primary effects of aneuploidy on gene expression and describe the cellular response to altered mRNA and protein levels. Moreover, we consider compensatory mechanisms that may ameliorate imbalanced gene expression and restore protein homeostasis in aneuploid cells. Finally, we propose a novel hypothesis to explain the hitherto enigmatic abundance compensation of proteins encoded on supernumerary chromosomes. (C) 2013 Elsevier B.V. All rights reserved.