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Publication : A conditional piggyBac transposition system for genetic screening in mice identifies oncogenic networks in pancreatic cancer.

First Author	Rad R	Year	2015
Journal	Nat Genet	Volume	47
Issue	1	Pages	47-56
PubMed ID	25485836	Mgi Jnum	J:220259
Mgi Id	MGI:5634043	Doi	10.1038/ng.3164
Citation	Rad R, et al. (2015) A conditional piggyBac transposition system for genetic screening in mice identifies oncogenic networks in pancreatic cancer. Nat Genet 47(1):47-56

abstractText

Here we describe a conditional piggyBac transposition system in mice and report the discovery of large sets of new cancer genes through a pancreatic insertional mutagenesis screen. We identify Foxp1 as an oncogenic transcription factor that drives pancreatic cancer invasion and spread in a mouse model and correlates with lymph node metastasis in human patients with pancreatic cancer. The propensity of piggyBac for open chromatin also enabled genome-wide screening for cancer-relevant noncoding DNA, which pinpointed a Cdkn2a cis-regulatory region. Histologically, we observed different tumor subentities and discovered associated genetic events, including Fign insertions in hepatoid pancreatic cancer. Our studies demonstrate the power of genetic screening to discover cancer drivers that are difficult to identify by other approaches to cancer genome analysis, such as downstream targets of commonly mutated human cancer genes. These piggyBac resources are universally applicable in any tissue context and provide unique experimental access to the genetic complexity of cancer.

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