Unknown

Dataset Information

0

Induction of hepatocellular carcinoma by in vivo gene targeting.


ABSTRACT: The distinct phenotypic and prognostic subclasses of human hepatocellular carcinoma (HCC) are difficult to reproduce in animal experiments. Here we have used in vivo gene targeting to insert an enhancer-promoter element at an imprinted chromosome 12 locus in mice, thereby converting ?1 in 20,000 normal hepatocytes into a focus of HCC with a single genetic modification. A 300-kb chromosomal domain containing multiple mRNAs, snoRNAs, and microRNAs was activated surrounding the integration site. An identical domain was activated at the syntenic locus in a specific molecular subclass of spontaneous human HCCs with a similar histological phenotype, which was associated with partial loss of DNA methylation. These findings demonstrate the accuracy of in vivo gene targeting in modeling human cancer and suggest future applications in studying various tumors in diverse animal species. In addition, similar insertion events produced by randomly integrating vectors could be a concern for liver-directed human gene therapy.

SUBMITTER: Wang PR 

PROVIDER: S-EPMC3396480 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature

altmetric image

Publications

Induction of hepatocellular carcinoma by in vivo gene targeting.

Wang Pei-Rong PR   Xu Mei M   Toffanin Sara S   Li Yi Y   Llovet Josep M JM   Russell David W DW  

Proceedings of the National Academy of Sciences of the United States of America 20120625 28


The distinct phenotypic and prognostic subclasses of human hepatocellular carcinoma (HCC) are difficult to reproduce in animal experiments. Here we have used in vivo gene targeting to insert an enhancer-promoter element at an imprinted chromosome 12 locus in mice, thereby converting ∼1 in 20,000 normal hepatocytes into a focus of HCC with a single genetic modification. A 300-kb chromosomal domain containing multiple mRNAs, snoRNAs, and microRNAs was activated surrounding the integration site. An  ...[more]

Similar Datasets

| S-EPMC4698495 | biostudies-literature
| S-EPMC6563991 | biostudies-literature
2012-07-02 | E-GEOD-35402 | biostudies-arrayexpress
2012-07-02 | E-GEOD-35403 | biostudies-arrayexpress
2012-07-03 | GSE35403 | GEO
2012-07-03 | GSE35402 | GEO
2012-07-02 | E-GEOD-35404 | biostudies-arrayexpress
| S-EPMC9536265 | biostudies-literature
| S-EPMC7407725 | biostudies-literature
| S-EPMC4342599 | biostudies-literature