Abstract:
:Overexpression of Bcl-xL, loss of p19 ARF, and loss of p53 all accelerate Myc oncogenesis. All three lesions are implicated in suppressing Myc-induced apoptosis, suggesting that this is a common mechanism by which they synergize with Myc. However, using an acutely switchable model of Myc-induced tumorigenesis, we demonstrate that each lesion cooperates with Myc in vivo by a distinct mechanism. While Bcl-xL blocks Myc-induced apoptosis, inactivation of p19 ARF enhances it. However, this increase in apoptosis is matched by increased Myc-induced proliferation. p53 inactivation shares features of both lesions, partially suppressing apoptosis while augmenting proliferation. Bcl-xL and p19 ARF loss together synergize to further accelerate Myc oncogenesis. Thus, differing lesions cooperate oncogenically with Myc by discrete mechanisms that can themselves synergize with each other.
journal_name
Cancer Celljournal_title
Cancer cellauthors
Finch A,Prescott J,Shchors K,Hunt A,Soucek L,Dansen TB,Swigart LB,Evan GIdoi
10.1016/j.ccr.2006.06.017subject
Has Abstractpub_date
2006-08-01 00:00:00pages
113-20issue
2eissn
1535-6108issn
1878-3686pii
S1535-6108(06)00215-7journal_volume
10pub_type
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