کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8751415 1594197 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Insights into the mechanisms underlying the inactivation of HIV-1 proviruses by CRISPR/Cas
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ویروس شناسی
پیش نمایش صفحه اول مقاله
Insights into the mechanisms underlying the inactivation of HIV-1 proviruses by CRISPR/Cas
چکیده انگلیسی
DNA editing using CRISPR/Cas has emerged as a potential treatment for diseases caused by pathogenic human DNA viruses. One potential target is HIV-1, which replicates via a chromosomally integrated DNA provirus. While CRISPR/Cas can protect T cells from de novo HIV-1 infection, HIV-1 frequently becomes resistant due to mutations in the chosen single guide RNA (sgRNA) target site. To address this problem, we asked whether an sgRNA targeted to a conserved, functionally critical HIV-1 sequence might prevent the selection of escape mutants. We report that two sgRNAs specific for the HIV-1 transactivation response (TAR) element produce opposite results: the TAR2 sgRNA rapidly selects for mutants that retain TAR function, but are no longer inhibited by Cas9, while the TAR1 sgRNA fails to select any replication competent TAR mutants, most probably because it is targeted to a region of TAR that is disrupted by even minor mutations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Virology - Volume 520, July 2018, Pages 116-126
نویسندگان
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