One key advantage of the CRISPR/Cas9 system in comparison with other gene editing approaches lies in its potential for multiplexing. Here, we describe an elaborate procedure that allows the assembly of multiple gRNA expression cassettes into a vector of choice within a single step, termed ASAP(Adaptable System for Assembly of multiplexed Plasmids)-cloning. We demonstrate the utility of ASAP-cloning for multiple CRISPR-mediated applications, including efficient multiplex gene editing, robust transcription activation and convenient analysis of Cas9 activity in the presence of multiple gRNAs.
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http://dx.doi.org/10.1038/s41598-018-35727-3 | DOI Listing |
Development
January 2025
Université Côte d'Azur, CNRS, INSERM, Institute for Research on Cancer and Aging, Nice (IRCAN), Nice, 06107, France.
Optimized laboratory conditions for research models are crucial for the success of scientific projects. This includes controlling the entire life cycle, having access to all developmental stages and maintaining stable physiological conditions. Reducing the life cycle of a research model can also enhance the access to biological material and speed up genetic tool development.
View Article and Find Full Text PDFDev Growth Differ
January 2025
Amphibian Research Center, Hiroshima University, Higashi-Hiroshima, Japan.
Cyclin-dependent kinases (CDKs) are key regulators of cell cycle progression, in conjunction with cyclins. The cyclin-CDK system is highly conserved among eukaryotes, and CDK1 is considered essential for progression through the M phase. However, the extent to which cell cycle progression depends on CDK1 varies between cell types.
View Article and Find Full Text PDFNew Phytol
January 2025
Department of Fruit Tree Sciences, The Volcani Center ARO, 68 HaMaccabim Road, Rishon LeZion, 7505101, Israel.
Furanocoumarins (FCs) are plant defence compounds derived from the phenylpropanoid pathway via the coumarin umbelliferone that harbour some therapeutic benefits yet are the underlying cause of 'grapefruit-drug interactions' in humans. Most of the pathway genes have not been identified in citrus. We employed a genetic/Omics approach on citrus ancestral species and F1 populations of mandarin × grapefruit and mandarin × pummelo.
View Article and Find Full Text PDFKardiol Pol
January 2025
1st Department of Cardiology, Poznan University of Medical Sciences, Poznań, Poland.
PLoS One
December 2024
Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada.
The ability to determine the essentiality of a gene in the protozoan parasite Leishmania is important to identify potential targets for intervention and understanding the parasite biology. CRISPR gene editing technology has significantly improved gene targeting efficiency in Leishmania. There are two commonly used CRISPR gene targeting methods in Leishmania; the stable expression of the gRNA and Cas9 using a plasmid containing a Leishmania ribosomal RNA gene promoter (rRNA-P stable protocol) and the T7 RNA polymerase based transient gRNA expression system in promastigotes stably expressing Cas9 (T7 transient protocol).
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