Evasion of the p53 tumour surveillance network by tumour-derived MYC mutants

Michael T. Hemann, Anka Bric, Julie Teruya-Feldstein, Andreas Herbst, Jonas A. Nilsson, Carlos Cordon-Cardo, John L. Cleveland, William P. Tansey and Scott W. Lowe ()
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Michael T. Hemann: Cold Spring Harbor Laboratory
Anka Bric: Cold Spring Harbor Laboratory
Julie Teruya-Feldstein: Memorial Sloan Kettering Cancer Center
Andreas Herbst: Cold Spring Harbor Laboratory
Jonas A. Nilsson: St Jude Children's Research Hospital
Carlos Cordon-Cardo: Memorial Sloan Kettering Cancer Center
John L. Cleveland: St Jude Children's Research Hospital
William P. Tansey: Cold Spring Harbor Laboratory
Scott W. Lowe: Cold Spring Harbor Laboratory

Nature, 2005, vol. 436, issue 7052, 807-811

Abstract: Abstract The c-Myc oncoprotein promotes proliferation and apoptosis, such that mutations that disable apoptotic programmes often cooperate with MYC during tumorigenesis. Here we report that two common mutant MYC alleles derived from human Burkitt's lymphoma uncouple proliferation from apoptosis and, as a result, are more effective than wild-type MYC at promoting B cell lymphomagenesis in mice. Mutant MYC proteins retain their ability to stimulate proliferation and activate p53, but are defective at promoting apoptosis due to a failure to induce the BH3-only protein Bim (a member of the B cell lymphoma 2 (Bcl2) family) and effectively inhibit Bcl2. Disruption of apoptosis through enforced expression of Bcl2, or loss of either Bim or p53 function, enables wild-type MYC to produce lymphomas as efficiently as mutant MYC. These data show how parallel apoptotic pathways act together to suppress MYC-induced transformation, and how mutant MYC proteins, by selectively disabling a p53-independent pathway, enable tumour cells to evade p53 action during lymphomagenesis.

Date: 2005
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DOI: 10.1038/nature03845

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