Project description:We performed a large-scale genome-wide characterisation of indels generated following editing with CRISPR/Cas9. We used pools of sgRNAs and performed targeted capture and sequencing of the edited regions in HepG2 cells.
Project description:To compare the impact of CRISPR-egineered R175 TP53 mutant variants in HCT116 and H460 cells, mutations at the amino acid position 175 were generated systematically by CRISP/Cas9 editing. Here, genomic amplicon regions covering the TP53 Exons 5 were sequenced via targeted sequencing.
Project description:We generated a SNORD71 KO chondrocyte cell pool using CRISPR/Cas9 gene editing. A CRISPR control cell line was generated and used as a control. Levels of 2’-O-methylation of human rRNAs in SNORD71 KO cell pool and CRISPR control cells were evaluated by RiboMethSeq.
Project description:Based on the hypothesis that, enhancing the local concentration of donor oligos could increase the correction rates, we generated and tested novel CRISPR-Cas9 systems, in which the DNA repair template is covalently conjugated to Cas9 (RNPD system). To validate our results from the HEK293T reporter cells, we here tested our approach at different endogenous genomic loci and in different cell types. We first targeted the human beta globin (HBB) locus in the K562 cell line, and analyzed correction- and editing frequencies using next generation sequencing (NGS). Next we targeted the Rosa26 and proprotein convertase subtilisin/kexin type 9 (Pcsk9) locus in mouse embryonic stem cells (mESCs). Here, RNPD system was always compared to Cas9 SNAP-tag fusion proteins with uncoupled donor oligos. To also directly compare the engineered RNPD system to the classical CRISPR-Cas9 system, we performed experiments where we used wild-type Cas9 with the uncoupled donor oligos as a control. We therefore targeted the fluorescent reporter locus as well as the endogenous loci HBB, empty spiracles homeobox 1 (EMX1), and C-X-C chemokine receptor type 4 (CXCR4) in HEK293T cells. Finally, we performed the analysis of three computationally predicted off-target sites of the reporter locus.
Project description:This is an in vitro genome-wide CRISPR/cas9 screen in human glioblastoma stem cells, screening for genes essential for survival of these cells. These cells express cas9 and have been transfected with a guide RNA library causing gene knockouts. We will analyse the sequencing data for depletion of guide RNAs. In this particular study, we will do RNA sequencing to correlate CRISPR with expression levels in specific cancer cell subpopulations. This data is part of a pre-publication release. For information on the proper use of pre-publication data shared by the Wellcome Trust Sanger Institute (including details of any publication moratoria), please see http://www.sanger.ac.uk/datasharing/
Project description:In this project, we cultured rat hippocampal neurons in mechanically different environments and studied electrical maturation. We compared WT neurons with two different Piezo1 knockdown conditions. These two knockdown conditions were generated in two independent CRISPR-Cas9 KD assays. Each assay is based on four different CRISPR-Cas9 guides targeting the Piezo1 gene. RNA sequencing was used to analyse the pathway leading to the stiffness dependent maturation behaviour.
Project description:We generated these data to compare two modifications of the original ATAC-seq protocol. One was the cleavage of mtDNA using CRISPR/Cas9 and 100 gRNAs targeting mtDNA. The other was the removal of detergent from the cell lysis step. There are 27 sample pairs, untreated and treated with anti-mt CRISPR/Cas9 grouped by sample pair number. Refer to Supplemental File 1 of the article describing this data set for more information on the samples.
Project description:By a robust unbiased ChIP-seq approach, we demonstrated that CRISPR/Cas9 had crRNA-specific off-target binding activities in human genome. However, most of those binding off-targets could not be efficiently cleaved both in vivo and in vitro which suggested the cleavage off-target activity of CRISPR/Cas9 in human genome is very limited. We provided a valuable tool to further investigate the molecular mechanism of CRISPR/Cas9 and to optimize its in vivo targeting sgRNA binding sites were identified with ChipSeq by using GFP antibody (there are 2 replicates for egfa-t1 sgRNA,emx1 sgRNA and control without sgRNA in Hek293T cells, one egfa-t1 sgRNA,emx1 sgRNA and control without sgRNA in HeLaS3 cells)
Project description:UPF3A and UPF3B are paralogous genes in human cells that are involved in the nonsense-mediated decay (NMD) pathway. NMD is a cellular quality control mechanism that monitors mRNAs during translation. Aberrant translation due to features such as the presence of a premature stop codon downstream on an exon-exon junction activates NMD and leads to the degradation of the mRNA. To investigate the role of UPF3B and UPF3A in NMD, we have generated UPF3B knockout human Flp-In T-REx 293 cells using CRISPR-Cas9. We generated RNA-Sequencing data for wildtype and UPF3B KO cells with additional siRNA-mediated knockdown of Luciferase (Luc) as control or UPF3A.