Journal
CANCER CELL
Volume 11, Issue 3, Pages 229-243Publisher
CELL PRESS
DOI: 10.1016/j.ccr.2007.01.017
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Funding
- NCI NIH HHS [P30 CA15704, R01 CA101973, U01 CA084291, P50 CA62924] Funding Source: Medline
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Oncogenic Kras initiates pancreatic tumorigenesis, while subsequent genetic events shape the resultant disease. We show here that concomitant expression of Kras(G12D) and haploinsufficiency of the Smad4/Dpc4 tumor suppressor gene engenders a distinct class of pancreatic tumors, mucinous; cystic neoplasms (MCNs), which culminate in invasive ductal adenocarcinomas. Disease evolves along a progression scheme analogous to, but distinct from, the classical PanIN-to-ductal adenocarcinoma sequence, and also portends a markedly different prognosis. Progression of MCNs; is accompanied by LOH of Dpc4 and mutation of either p53 or p16. Thus, these distinct phenotypic routes to invasive adenocarcinoma nevertheless share the same overall mutational spectra. Our findings suggest that the sequence, as well as the context, in which these critical mutations are acquired helps determine the ensuing pathology.
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