Insertional Mutagenesis by CRISPR/Cas9 Ribonucleoprotein Gene Editing in Cells Targeted for Point Mutation Repair Directed by Short Single-Stranded DNA Oligonucleotides
Publication Date
January 04, 2017
Authors
Natalia Rivera Torres, Kelly Banas, Pawel Bialk, Kevin M. Bloh, et al
Volume
12
Issue
1
Pages
e0169350
DOI
https://dx.plos.org/10.1371/journal.pone.0169350
Publisher URL
https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0169350
Scopus
85008339631
Mendeley
http://www.mendeley.com/research/insertional-mutagenesis-crisprcas9-ribonucleoprotein-gene-editing-cells-targeted-point-mutation-repa
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Mendeley | Further Information

{"title"=>"Insertional mutagenesis by CRISPR/Cas9 ribonucleoprotein gene editing in cells targeted for point mutation repair directed by short single-stranded DNA oligonucleotides", "type"=>"journal", "authors"=>[{"first_name"=>"Natalia", "last_name"=>"Rivera-Torres", "scopus_author_id"=>"56154335300"}, {"first_name"=>"Kelly", "last_name"=>"Banas", "scopus_author_id"=>"57192833598"}, {"first_name"=>"Pawel", "last_name"=>"Bialk", "scopus_author_id"=>"55510433600"}, {"first_name"=>"Kevin M.", "last_name"=>"Bloh", "scopus_author_id"=>"57191110627"}, {"first_name"=>"Eric B.", "last_name"=>"Kmiec", "scopus_author_id"=>"26643551500"}], "year"=>2017, "source"=>"PLoS ONE", "identifiers"=>{"scopus"=>"2-s2.0-85008339631", "sgr"=>"85008339631", "doi"=>"10.1371/journal.pone.0169350", "pui"=>"613964369", "pmid"=>"28052104", "isbn"=>"1111111111", "issn"=>"19326203"}, "id"=>"04f37927-3cdb-3cc9-8da9-20df7e571309", "abstract"=>"CRISPR/Cas9 and single-stranded DNA oligonucleotides (ssODNs) have been used to direct the repair of a single base mutation in human genes. Here, we examine a method designed to increase the precision of RNA guided genome editing in human cells by utilizing a CRISPR/Cas9 ribonucleoprotein (RNP) complex to initiate DNA cleavage. The RNP is assembled in vitro and induces a double stranded break at a specific site surrounding the mutant base designated for correction by the ssODN. We use an integrated mutant eGFP gene, bearing a single base change rendering the expressed protein nonfunctional, as a single copy target in HCT 116 cells. We observe significant gene correction activity of the mutant base, promoted by the RNP and single-stranded DNA oligonucleotide with validation through genotypic and phenotypic readout. We demonstrate that all individual components must be present to obtain successful gene editing. Importantly, we examine the genotype of individually sorted corrected and uncorrected clonally expanded cell populations for the mutagenic footprint left by the action of these gene editing tools. While the DNA sequence of the corrected population is exact with no adjacent sequence modification, the uncorrected population exhibits heterogeneous mutagenicity with a wide variety of deletions and insertions surrounding the target site. We designate this type of DNA aberration as on-site mutagenicity. Analyses of two clonal populations bearing specific DNA insertions surrounding the target site, indicate that point mutation repair has occurred at the level of the gene. The phenotype, however, is not rescued because a section of the single-stranded oligonucleotide has been inserted altering the reading frame and generating truncated proteins. These data illustrate the importance of analysing mutagenicity in uncorrected cells. Our results also form the basis of a simple model for point mutation repair directed by a short single-stranded DNA oligonucleotides and CRISPR/Cas9 ribonucleoprotein complex.", "link"=>"http://www.mendeley.com/research/insertional-mutagenesis-crisprcas9-ribonucleoprotein-gene-editing-cells-targeted-point-mutation-repa", "reader_count"=>75, "reader_count_by_academic_status"=>{"Unspecified"=>2, "Professor > Associate Professor"=>1, "Researcher"=>20, "Student > Doctoral Student"=>4, "Student > Ph. D. Student"=>17, "Student > Postgraduate"=>5, "Student > Master"=>12, "Other"=>1, "Student > Bachelor"=>12, "Professor"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>2, "Professor > Associate Professor"=>1, "Researcher"=>20, "Student > Doctoral Student"=>4, "Student > Ph. D. Student"=>17, "Student > Postgraduate"=>5, "Student > Master"=>12, "Other"=>1, "Student > Bachelor"=>12, "Professor"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>3, "Biochemistry, Genetics and Molecular Biology"=>39, "Agricultural and Biological Sciences"=>26, "Medicine and Dentistry"=>2, "Pharmacology, Toxicology and Pharmaceutical Science"=>2, "Chemistry"=>2, "Neuroscience"=>1}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>2}, "Chemistry"=>{"Chemistry"=>2}, "Neuroscience"=>{"Neuroscience"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>26}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>39}, "Unspecified"=>{"Unspecified"=>3}, "Pharmacology, Toxicology and Pharmaceutical Science"=>{"Pharmacology, Toxicology and Pharmaceutical Science"=>2}}, "reader_count_by_country"=>{"Netherlands"=>1, "China"=>1, "United Kingdom"=>1, "Switzerland"=>1}, "group_count"=>1}

Scopus | Further Information

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