CRISPR-Cas9 Circular Permutants as Programmable Scaffolds for Genome Modification.
Cell
; 176(1-2): 254-267.e16, 2019 01 10.
Article
in En
| MEDLINE
| ID: mdl-30633905
ABSTRACT
The ability to engineer natural proteins is pivotal to a future, pragmatic biology. CRISPR proteins have revolutionized genome modification, yet the CRISPR-Cas9 scaffold is not ideal for fusions or activation by cellular triggers. Here, we show that a topological rearrangement of Cas9 using circular permutation provides an advanced platform for RNA-guided genome modification and protection. Through systematic interrogation, we find that protein termini can be positioned adjacent to bound DNA, offering a straightforward mechanism for strategically fusing functional domains. Additionally, circular permutation enabled protease-sensing Cas9s (ProCas9s), a unique class of single-molecule effectors possessing programmable inputs and outputs. ProCas9s can sense a wide range of proteases, and we demonstrate that ProCas9 can orchestrate a cellular response to pathogen-associated protease activity. Together, these results provide a toolkit of safer and more efficient genome-modifying enzymes and molecular recorders for the advancement of precision genome engineering in research, agriculture, and biomedicine.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Clustered Regularly Interspaced Short Palindromic Repeats
/
CRISPR-Cas Systems
/
Gene Editing
Language:
En
Journal:
Cell
Year:
2019
Document type:
Article
Affiliation country:
Estados Unidos