PMID- 14681207 OWN - NLM STAT- MEDLINE DCOM- 20040129 LR - 20240109 IS - 0890-9369 (Print) IS - 0890-9369 (Linking) VI - 17 IP - 24 DP - 2003 Dec 15 TI - Activated Kras and Ink4a/Arf deficiency cooperate to produce metastatic pancreatic ductal adenocarcinoma. PG - 3112-26 AB - Pancreatic ductal adenocarcinoma ranks among the most lethal of human malignancies. Here, we assess the cooperative interactions of two signature mutations in mice engineered to sustain pancreas-specific Cre-mediated activation of a mutant Kras allele (KrasG12D) and deletion of a conditional Ink4a/Arf tumor suppressor allele. The phenotypic impact of KrasG12D alone was limited primarily to the development of focal premalignant ductal lesions, termed pancreatic intraepithelial neoplasias (PanINs), whereas the sole inactivation of Ink4a/Arf failed to produce any neoplastic lesions in the pancreas. In combination, KrasG12D expression and Ink4a/Arf deficiency resulted in an earlier appearance of PanIN lesions and these neoplasms progressed rapidly to highly invasive and metastatic cancers, resulting in death in all cases by 11 weeks. The evolution of these tumors bears striking resemblance to the human disease, possessing a proliferative stromal component and ductal lesions with a propensity to advance to a poorly differentiated state. These findings in the mouse provide experimental support for the widely accepted model of human pancreatic adenocarcinoma in which activated KRAS serves to initiate PanIN lesions, and the INK4A/ARF tumor suppressors function to constrain the malignant conversion of these PanIN lesions into lethal ductal adenocarcinoma. This faithful mouse model may permit the systematic analysis of genetic lesions implicated in the human disease and serve as a platform for the identification of early disease markers and for the efficient testing of novel therapies. FAU - Aguirre, Andrew J AU - Aguirre AJ AD - Department of Medical Oncology, Dana Farber Cancer Institute and Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. FAU - Bardeesy, Nabeel AU - Bardeesy N FAU - Sinha, Manisha AU - Sinha M FAU - Lopez, Lyle AU - Lopez L FAU - Tuveson, David A AU - Tuveson DA FAU - Horner, James AU - Horner J FAU - Redston, Mark S AU - Redston MS FAU - DePinho, Ronald A AU - DePinho RA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. DEP - 20031217 PL - United States TA - Genes Dev JT - Genes & development JID - 8711660 RN - 0 (Cyclin-Dependent Kinase Inhibitor p16) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Tumor Suppressor Protein p14ARF) RN - 0 (Tumor Suppressor Protein p53) RN - 0 (Vascular Endothelial Growth Factor A) RN - 0 (Viral Proteins) RN - EC 2.7.7.- (Cre recombinase) RN - EC 2.7.7.- (Integrases) SB - IM MH - Animals MH - Carcinoma, Pancreatic Ductal/*etiology/metabolism/pathology MH - Cyclin-Dependent Kinase Inhibitor p16/*physiology MH - Fibroblasts/metabolism MH - Genes, ras/*physiology MH - Humans MH - Integrases/metabolism MH - Mice MH - Mice, Knockout MH - Mice, Transgenic MH - Pancreatic Neoplasms/*etiology/metabolism/pathology MH - Proto-Oncogene Proteins/*metabolism MH - Tumor Cells, Cultured MH - Tumor Suppressor Protein p14ARF/*physiology MH - Tumor Suppressor Protein p53/metabolism MH - Vascular Endothelial Growth Factor A/metabolism MH - Viral Proteins/metabolism PMC - PMC305262 EDAT- 2003/12/19 05:00 MHDA- 2004/01/30 05:00 PMCR- 2004/06/15 CRDT- 2003/12/19 05:00 PHST- 2003/12/19 05:00 [pubmed] PHST- 2004/01/30 05:00 [medline] PHST- 2003/12/19 05:00 [entrez] PHST- 2004/06/15 00:00 [pmc-release] AID - 1158703 [pii] AID - 0173112 [pii] AID - 10.1101/gad.1158703 [doi] PST - ppublish SO - Genes Dev. 2003 Dec 15;17(24):3112-26. doi: 10.1101/gad.1158703. Epub 2003 Dec 17.