Reaction parameters of targeted gene repair in mammalian cells View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2005-03

AUTHORS

Yiling Hu, Hetal Parekh-Olmedo, Miya Drury, Michael Skogen, Eric B. Kmiec

ABSTRACT

Targeted gene repair uses short DNA oligonucleotides to direct a nucleotide exchange reaction at a designated site in a mammalian chromosome. The widespread use of this technique has been hampered by the inability of workers to achieve robust levels of correction. Here, we present a mammalian cell system in which DLD-1 cells bearing integrated copies of a mutant eGFP gene are repaired by modified single-stranded DNA oligonucleotides. We demonstrate that two independent clonal isolates, which are transcribed at different levels, are corrected at different frequencies. We confirm the evidence of a strand bias observed previously in other systems, wherein an oligonucleotide designed to be complementary to the nontranscribed strand of the target directs a higher level of repair than one targeting the transcribed strand. Higher concentrations of cell oligonucleotides in the electroporation mixture lead to higher levels of correction. When the target cell population is synchronized into S phase then released before electroporation, the correction efficiency is increased within the entire population. This model system could be useful for pharmacogenomic applications of targeted gene repair including the creation of cell lines containing single-base alterations. More... »

PAGES

197-210

Identifiers

URI

http://scigraph.springernature.com/pub.10.1385/mb:29:3:197

DOI

http://dx.doi.org/10.1385/mb:29:3:197

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1033060504

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/15767697


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