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Updated: Jul 26, 2025

Efficient Generation of hiPSC Neural Lineage Specific Knockin Reporters Using the CRISPR/Cas9 and Cas9 Double Nickase System
Published on: May 28, 2015
Fast, precise and cloning-free knock-in of reporter sequences in vivo with high efficiency
Yiran Zhang1, Katy Marshall-Phelps1, Rafael Góis de Almeida1
1Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH16 4SB, UK.
Abstract:
Targeted knock-in of fluorescent reporters enables powerful gene and protein analyses in a physiological context. However, precise integration of long sequences remains challenging in vivo. Here, we demonstrate cloning-free and precise reporter knock-in into zebrafish genes, using PCR-generated templates for homology-directed repair with short homology arms (PCR tagging). Our novel knock-in reporter lines of vesicle-associated membrane protein (vamp) zebrafish homologues reveal subcellular complexity in this protein family. Our approach enables fast and efficient reporter integration in the zebrafish genome (in 10-40% of injected embryos) and rapid generation of stable germline-transmitting lines.
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