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Generation of focal mutations and large genomic deletions in the pancreas using inducible in vivo genome editing.
Carcinogenesis 41, 334-344 (2020)
Beyond the nearly uniform presence of KRAS mutations, pancreatic cancer is increasingly recognized as a heterogeneous disease. Preclinical in vivo model systems exist, but with the advent of precision oncology, murine models with enhanced genetic flexibility are needed to functionally annotate genetic alterations found in the human malignancy. Here, we describe the generation of focal gene disruptions and large chromosomal deletions via inducible and pancreas-specific expression of Cas9 in adult mice. Experimental mice are derived on demand directly from genetically engineered embryonic stem cells, without the need for further intercrossing. To provide initial validation of our approach, we show that disruption of the E3 ubiquitin ligase Rnf43 accelerates Kras(G12D)-dependent tumourigenesis. Moreover, we demonstrate that this system can be used to rapidly interrogate the impact of complex cancer-associated alleles through the generation of a previously unstudied 1.2 megabase deletion surrounding the CDKN2A and CDKN2B tumour suppressors. Thus, our approach is capable of reproducibly generating biallelic and precise loss of large chromosomal fragments that, in conjunction with mutant Kras, leads to development of pancreatic ductal adenocarcinoma with full penetrance.
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4.603
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Tumor-suppressor Rnf43; Chromosomal Rearrangements; Cancer; Integration; Efficiency; Subtypes; System; Mice; Web
Language
english
Publication Year
2020
Prepublished in Year
2019
HGF-reported in Year
2019
ISSN (print) / ISBN
0143-3334
e-ISSN
1460-2180
Journal
Carcinogenesis
Quellenangaben
Volume: 41,
Issue: 3,
Pages: 334-344
Publisher
Oxford University Press
Publishing Place
Great Clarendon St, Oxford Ox2 6dp, England
Reviewing status
Peer reviewed
Institute(s)
Translational Metabolic Oncology (IDC-TMO)
POF-Topic(s)
30203 - Molecular Targets and Therapies
Research field(s)
Radiation Sciences
PSP Element(s)
G-501000-001
WOS ID
WOS:000537452100010
Scopus ID
85084694176
PubMed ID
31170286
Erfassungsdatum
2019-07-26