Researchers have taken a major step toward developing a better animal model of human AIDS. Such a model could greatly improve researchers' ability to evaluate potential strategies for preventing and treating the disease.
Liao et al. transfected human cell lines with Cas9 and with gRNAs targeting the long terminal repeats (LTRs) of HIV-1, which led to reduced infection of these cells by HIV-1, compared with wild-type cells. Similarly, CRISPR–Cas9 transfection into cell lines with integrated virus reduced the levels of proviral DNA. Furthermore, human T cell lines engineered to stably express Cas9 and LTR-specific gRNAs maintained a low level of viral infection even 14 days post-infection with HIV-1. Finally, the authors showed that CRISPR–Cas9 efficiently reduced virus production in primary human cells, demonstrating that expression of the CRISPR–Cas9 system in humans confers protection against HIV-1 infection.
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Researchers have taken a major step toward developing a better animal model of human AIDS. Such a model could greatly improve researchers' ability to evaluate potential strategies for preventing and treating the disease.