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

作者：Rad Roland^*; Rad Lena; Wang Wei; Strong Alexander; Ponstingl Hannes; Bronner Iraad F; Mayho Matthew; Steiger Katja; Weber Julia; Hieber Maren; Veltkamp Christian; Eser Stefan; Geumann Ulf; Oellinger Rupert; Zukowska Magdalena; Barenboim Maxim; Maresch Roman; Cadinanos Juan; Friedrich Mathias; Varela Ignacio; Constantino Casas Fernando; Sarver Aaron; ten Hoeve Jelle; Prosser Haydn; Seidler Barbara; Bauer Judith; Heikenwaelder Mathias; Metzakopian Emmanouil; Krug Anne

来源：Nature Genetics, 2015, 47(1): 47-+.

DOI：10.1038/ng.3164

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.

• 出版日期2015-1