title: Lack of RNA-DNA oligonucleotide (chimeraplast) mutagenic activity in mouse embryos.
abstract: There are numerous reports of the use of RNA-DNA oligonucleotides (chimeraplasts) to correct point mutations in vitro and in vivo, including the human apolipoprotein E gene (ApoE). Despite the absence of selection for targeting, high efficiency conversion has been reported. Although mainly used to revert deleterious mutations for gene therapy applications, successful use of this approach would have the potential to greatly facilitate the production of defined mutations in mice and other species. We have attempted to create a point mutation in the mouse ApoE gene by microinjection of chimeraplast into the pronuclei of 1-cell mouse eggs. Following transfer of microinjected eggs we analysed 139 E12.5 embryos, but obtained no evidence for successful conversion.
authors.affiliation: Department of Anatomy and Developmental Biology, Hampstead Campus, University College London, London, United Kingdom.
authors.forename: Aristides D
authors.initials: AD
authors.lastname: Tagalakis
authors.forename: James S
authors.initials: JS
authors.lastname: Owen
authors.forename: J Paul
authors.initials: JP
authors.lastname: Simons
mesh_terms: D000818:Animals; D001057:Apolipoproteins E / Q000235:genetics*; D002970:Cleavage Stage, Ovum / Q000502:physiology*; D005260:Female; D018390:Gene Targeting; D016297:Mutagenesis, Site-Directed; D009838:Oligodeoxyribonucleotides / Q000235:genetics; D009843:Oligoribonucleotides / Q000235:genetics
chemical_list: D001057:Apolipoproteins E; D009838:Oligodeoxyribonucleotides; D009843:Oligoribonucleotides