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Nonpermissiveness for mouse embryonic stem (ES) cell derivation circumvented by a single backcross to 129/Sv strain: establishment of ES cell lines be ...

Nonpermissiveness for mouse embryonic stem (ES) cell derivation circumvented by a single... The inbred mouse strain DDK carries a conditional early embryonic lethal mutation that is manifested when DDK females are crossed to males of other inbred strains but not in the corresponding reciprocal crosses. It has been shown that embryonic lethality could be assigned to a single genetic locus called Ovum mutant (Om), on Chromosome (Chr) 11 near Syca 1. In the course of our study of the molecular mechanisms underlying the embryonic lethality, we were interested in deriving an embryonic stem cell bearing the Om mutation in the homozygous state (Om d /Om d ). However, it turned out that DDK is nonpermissive for ES cell establishment, with a standard protocol. Here we show that permissiveness could be obtained using Om d /Om d blastocysts with a 75% 129/Sv and 25% DDK genetic background. Several germline-competent Om d /Om d ES cell lines have been derived from blastocysts of this genotype. Such a scenario could be extended to the generation of ES cell lines bearing any mutation present in an otherwise nonpermissive mouse strain. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalian Genome Springer Journals

Nonpermissiveness for mouse embryonic stem (ES) cell derivation circumvented by a single backcross to 129/Sv strain: establishment of ES cell lines be ...

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References (18)

Publisher
Springer Journals
Copyright
Copyright © 1998 by Springer-Verlag New York Inc.
Subject
Life Sciences; Cell Biology; Animal Genetics and Genomics; Human Genetics
ISSN
0938-8990
eISSN
1432-1777
DOI
10.1007/s003359900914
Publisher site
See Article on Publisher Site

Abstract

The inbred mouse strain DDK carries a conditional early embryonic lethal mutation that is manifested when DDK females are crossed to males of other inbred strains but not in the corresponding reciprocal crosses. It has been shown that embryonic lethality could be assigned to a single genetic locus called Ovum mutant (Om), on Chromosome (Chr) 11 near Syca 1. In the course of our study of the molecular mechanisms underlying the embryonic lethality, we were interested in deriving an embryonic stem cell bearing the Om mutation in the homozygous state (Om d /Om d ). However, it turned out that DDK is nonpermissive for ES cell establishment, with a standard protocol. Here we show that permissiveness could be obtained using Om d /Om d blastocysts with a 75% 129/Sv and 25% DDK genetic background. Several germline-competent Om d /Om d ES cell lines have been derived from blastocysts of this genotype. Such a scenario could be extended to the generation of ES cell lines bearing any mutation present in an otherwise nonpermissive mouse strain.

Journal

Mammalian Genome – Springer Journals

Published: Dec 1, 1998

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