Horizon Discovery introduces Cas9 and dCas9-VPR stable cell lines

QC-validated cell lines promise to simplify and accelerate CRISPR gene editing workflows

8 Jul 2020
Edward Carter
Publishing / Media

Horizon Discovery has announced the introduction of its stably expressing Cas9 and dCas9-VPR cell lines to help accelerate gene knockout and gene activation experiments, respectively. The cell lines are optimized to work alongside Horizon’s Edit-R predesigned synthetic single guide RNA (sgRNA) and CRISPRa guide RNA, offering researchers a complete solution to simplify and streamline CRISPR gene editing and modulation workflows.

Horizon’s Cas9 and dCas9-VPR stable cell lines were generated using its Edit-R Lentiviral particles with a blasticidin resistance cassette and are provided in pooled format. The cell lines are QC verified and validated to ensure stable expression and functionality of Cas9 or dCas9-VPR endonuclease in a range of common cell backgrounds. Both cell lines are available in the same background to enable loss- and gain-of-function studies to be performed in parallel, without the need to engineer a cell line specifically for this purpose. Removing the time-intensive step of generating a stable cell line and the cost associated with purchasing a nuclease could help researchers increase R&D productivity and allow novice users gain a better understanding of the CRISPR workflow.

Travis Hardcastle, Product Manager, Horizon Discovery, said: “These stable Cas9 cell lines demonstrate our commitment to making gene editing more accessible and provide the added benefit of decreasing the demand on researchers time, expediting basic research to the target identification and validation phase of the drug discovery pipeline. Horizon is currently one of the only suppliers to offer a stable dCas9-VPR cell line for CRISPR activation and gain-of-function studies as well as the whole gene editing solution including a stable cell line, guide RNA and transfection reagent, allowing researchers to obtain the cells and reagents for both CRISPR knockout and activation studies from the same source.”

To introduce the range, Horizon is offering a launch bundle which will include one stable cell line background with a set of three predesigned synthetic sgRNAs and choice of DharmaFECT transfection reagent.

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CRISPR Screening Services

CRISPR Screening Services Horizon offers comprehensive CRISPR screening services from screen design and cell line selection to sophisticated bioinformatics analysis of the screen results. Our best-in-class CRISPR KO (knockout), CRISPRi (interference) and CRISPRa (activation) screening platforms can significantly advance our customers’ drug development programs by offering the highest quality and highest confidence in their screening results. Data analysis services, including sample preparation, Next-Gen Sequencing, and hit calling, can be provided for users of Edit-R Lentiviral sgRNA Pooled Screening Libraries. Simply provide whole cell pellets for each of your samples and we’ll do the rest. We can also help with the NGS data analysis and hit calling for data created using the Edit-R Pooled sgRNA Indexing PCR and Sequencing Primer Kits. Types of CRISPR Screen Expertise includes whole-genome and custom targeted drug resistance and sensitivity screens, synthetic lethality target discovery screens and complex phenotypic screens using a FACS-based readout. We have optimized 50+ cell lines for CRISPR screening and have completed over 300 screens to date. We offer a choice of CRISPR screen types depending on the expression effect you require: CRISPR KO screening with complete loss of gene expression provides the maximal window for phenotypic effect and high statistical power for hit discovery CRISPRi screening represses expression rather than completely knocking out the target gene and is ideally suited to study druggability and to evaluate the function of genes that when knocked-out are essential or that are amplified CRISPRa screening amplifies gene expression in its endogenous context and enables for the first time, to study activation-linked responses on a genome-wide level Dual CRISPRi & CRISPRa screening

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