Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
CLASH is a CRISPR-based platform that enables the parallel knock-in via homology-directed repair of a large pool of transgene variants encoded in adeno-associated virus vectors. CLASH can be applied to the systematic and unbiased selection of favorable features in T cells and, in principle, other cell types.
Targeted RNA degradation remains a challenge using existing methods owing to off-target effects and toxicity. We adapted the CRISPR-Csm complex, a multi-protein effector from type III CRISPR systems, for precise knockdown of nuclear or cytoplasmic transcripts in eukaryotic cells with minimal side effects.