Selective disruption of genes expressed in totipotent embryonal stem cells.
Open Access
- 1 June 1992
- journal article
- Published by Cold Spring Harbor Laboratory in Genes & Development
- Vol. 6 (6) , 919-927
- https://doi.org/10.1101/gad.6.6.919
Abstract
Two retrovirus promoter trap vectors (U3His and U3Neo) have been used to disrupt genes expressed in totipotent murine embryonal stem (ES) cells. Selection in L-histidinol or G418 produced clones in which the coding sequences for histidinol-dehydrogenase or neomycin-phosphotransferase were fused to sequences in or near the 5' exons of expressed genes, including one in the developmentally regulated REX-1 gene. Five of seven histidinol-resistant clones and three of three G418-resistant clones generated germ-line chimeras. A total of four disrupted genes have been passed to the germ line, of which two resulted in embryonic lethalities when bred to homozygosity. The ability to screen large numbers of recombinant ES cell clones for significant mutations, both in vitro and in vivo, circumvents genetic limitations imposed by the size and long generation time of mice and will facilitate a functional analysis of the mouse genome.Keywords
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