eLife assessment:
In this important work, the authors describe a recombinant CRISPR/Cas9 construct, CRISPR-nuPin, that has the reported capacity to rapidly tether DNA to the inner nuclear membrane of cells. They then evaluate the effect of this construct on Herpes Simplex virus type 1 infection, identifying different phases of viral replication susceptible to inner nuclear membrane tethering. This work provides convincing evidence for the effects of intranuclear DNA localization on viral gene expression and replication, using a method applicable to nonviral genes as well.