Footprintless disruption of prosurvival genes in aneuploid cancer cells using CRISPR/Cas9 technology
CRISPR/Cas9 has emerged as a powerful methodology for the targeted editing of genomic DNA sequences. Nevertheless, the intrinsic inefficiency of transfection methods required to use this technique with cultured cells requires the selection and isolation of successfully modified cells, which invariab...
Gespeichert in:
| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2 June 2016
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| In: |
Biochemistry and cell biology
Year: 2016, Jahrgang: 94, Heft: 3, Pages: 289-296 |
| ISSN: | 1208-6002 |
| DOI: | 10.1139/bcb-2015-0150 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1139/bcb-2015-0150 Verlag, Volltext: http://www.redi-bw.de/db/ebsco.php/search.ebscohost.com/login.aspx%3fdirect%3dtrue%26db%3da9h%26AN%3d115995019%26site%3dehost-live 
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| Verfasserangaben: | Justyna M. Krachulec, Georg Sedlmeier, Wilko Thiele, and Jonathan P. Sleeman |
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| 520 | |a CRISPR/Cas9 has emerged as a powerful methodology for the targeted editing of genomic DNA sequences. Nevertheless, the intrinsic inefficiency of transfection methods required to use this technique with cultured cells requires the selection and isolation of successfully modified cells, which invariably subjects the cells to stress. Here we report a workflow that allows the isolation of genomically modified cells, even where loss of functional alleles constitutes a selective disadvantage owing to impaired ability to survive stress. Using targeted disruption of the Id1 and Id3 genes in murine B16-F10 and Ret melanoma cell lines as an example, we show that the method allows for the footprintless isolation of CRISPR/Cas9-modified aneuploid cancer cells. We also provide evidence that serial CRISPR/Cas9 modifications can occur, for example when initial homologous recombination events introduce cryptic PAM sequences, and demonstrate that multiple alleles can be successfully targeted in aneuploid cancer cells. By sequencing individual alleles we also found evidence for CRISPR/Cas9-induced transposable element insertion, albeit at a low frequency. This workflow should have broad application in the functional analysis of prosurvival gene function in cultured cells. (English) | ||
| 650 | 4 | |a ANEUPLOIDY | |
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| 650 | 4 | |a CANCER cells | |
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| 650 | 4 | |a NONDISJUNCTION (Genetics) | |
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