Germline transmission and efficient DNA recombination in mouse embryonic stem cells mediated by adenoviral-Cre transduction
Article first published online: 13 JUL 2004
Copyright © 2004 Wiley-Liss, Inc.
Volume 39, Issue 3, pages 217–223, July 2004
How to Cite
Shui, J.-W. and Tan, T.-H. (2004), Germline transmission and efficient DNA recombination in mouse embryonic stem cells mediated by adenoviral-Cre transduction. Genesis, 39: 217–223. doi: 10.1002/gene.20044
- Issue published online: 13 JUL 2004
- Article first published online: 13 JUL 2004
- Manuscript Accepted: 15 APR 2004
- Manuscript Received: 8 JAN 2004
- NIH. Grant Number: R01-CA87076
- adenoviral delivery;
- germline transmission
Following gene targeting, a loxP-neo-loxP cassette was introduced into ES cells. The presence of a selectable marker such as neo in the targeted allele may result in gene interference in flox mice or unexpected phenotypes due to genetic ambiguity in direct knockout mice. Typically, the neo cassette is selectively removed by transient expression of the Cre recombinase in targeted ES cell. However, this method involves a tedious process of selecting, expanding, and screening ES cell clones which may compromise germline competency. Here, we describe a novel method of combining adenovirus-Cre mediated gene recombination with ES gene targeting to facilitate efficient loxP-neo-loxP removal in ES cells. We demonstrate that adenovirus-Cre infected ES cells can retain their germline competency. The procedures described here facilitate a rapid genetic manipulation of ES cells to obtain neo-free knockout animals, multiple gene targeting, homozygous mutant ES cells ideal for in vitro characterization, or Rag-deficient blastocyst complementation. genesis 39:217–223, 2004. © 2004 Wiley-Liss, Inc.