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Showing: 101 - 120 of 247 results
  1. 27 Hot Plasmids from 2016

    Type
    Blog Post
    Published
    Dec. 22, 2016, 3:03 p.m.
    ...pDGE Dicot Genome Editing Kit contains Cas9, Cas9 nickase, and Cas9 activator expressing plasmids that can...CRISPR-Cas9-based tool for targeting CpG methylation by fusing catalytically inactive Cas9 (dCas9) with...high-throughput CRISPR/Cas9 gene modification in Caenorhabditis elegans CRISPR/Cas9 technology has revolutionized...reported on a novel Cas9-based activator developed by the Church lab, termed “dCas9-VPR”, which facilitates...gRNA expressing cells were then transfected with a Cas9-expressing plasmid to generate a population of mutant...post entitled “Genome-wide Screening Using CRISPR/Cas9”. Detailed information regarding the Wu Lab library...library was cloned into the Liu lab’s own pAc-sgRNA-Cas9 insect expression backbone, which expresses the ...
  2. Targeted Mutagenesis with EvolvR

    Type
    Blog Post
    Published
    Feb. 21, 2019, 1:15 p.m.
    ...nicking Cas9. A guide directs Cas9 to a site of interest, where it nicks its target DNA (left). Cas9 dissociates...error prone PolI3M that’s fused to a nicking Cas9 (nCas9). Similar to mutagenesis with error prone PCR... a user-defined genomic region. EvolvR, a CRISPR-Cas9 based targeted mutagenesis method developed by the...enhance nCas9 (enCas9) EvolvR with a targeted mutagenesis rate ~9-fold higher than the original nCas9, while...used to direct the PolI3M-nCas9 complex to a DNA site of interest, which nCas9 nicks and then dissociates...amino acid changes were introduced to nCas9. These changes promote nCas9’s dissociation from DNA after nicking...diversification by targeting a site of interest with dCas9 fused to the Activation Induced Cytidine Deaminase...
  3. With Our New Viral Service, We're Taking CRISPR Further!

    Type
    Blog Post
    Published
    Dec. 6, 2016, 3:30 p.m.
    ...Institute to provide lentiviruses for delivery of SpCas9 and Cas9 nickase for genome editing. You can also enhance...Like all things in science, getting a high titer Cas9 lentivirus prep takes a bit of time and effort that...expression of your gene of interest with a variety of Cas9 activators available in lentiviral format. Finally... pathways. Find Validated gRNAs to use with your Cas9 Virus Pooled libraries now available in lentiviral...be used to infect a cell line already expressing Cas9. As John Doench (Broad Institute and member of the... makes it unuseable. With the large size of the SpCas9 nuclease (~4.2 kb) this is a particularly prominent...
  4. CRISPR Activators: A Comparison Between dCas9-VP64, SAM, SunTag, VPR, and More!

    Type
    Blog Post
    Published
    Oct. 6, 2020, 1:15 p.m.
    ...J, Collins JJ, Church GM (2015) Highly efficient Cas9-mediated transcriptional programming. Nat Methods...Perrimon N, Collins JJ, Church G (2016) Comparison of Cas9 activators in multiple species. Nat Methods 13:563...transcriptional activation by an engineered CRISPR-Cas9 complex. Nature 517:583–588 . https://doi.org/10.1038...Gersbach CA (2013) RNA-guided gene activation by CRISPR-Cas9–based transcription factors. Nat Methods 10:973–... cell lines.   dCas9-VP64 Description CRISPR activation can occur through fusing dCas9 with VP64, a strong... for CRISPR-based gene activation. dCas9-CBP In this method, dCas9 is fused to CBP, an histone acetyltransferase... the programmable guide RNA. Gene activation by dCas9, also referred to as CRISPRa, was initially published...
  5. Fluorescent Tagging of Endogenous Genes with SapTrap

    Type
    Blog Post
    Published
    Oct. 12, 2017, 2:26 p.m.
    ...this system lies in the ability of the endonuclease Cas9 to create a DNA double stranded break (DSB) at a..., and co-injection of the targeting vector and a Cas9 expression plasmid will insert the desired genetic...reactions are then mixed and transfected along with a Cas9 expression vector. They can also be introduced directly...into a Drosophila S2 cell line stably expressing Cas9. This PCR toolkit offers C- and N-terminal tagging... promote homology directed repair after a CRISPR/Cas9 induced break. Learn more about these constructs.... “SapTrap, a Toolkit for High-Throughput CRISPR/Cas9 Gene Modification in Caenorhabditis elegans.” Genetics...
  6. What's New in CRISPR - March 2020

    Type
    Blog Post
    Published
    March 10, 2020, 1:15 p.m.
    ... lower average Cas9-independent off-target DNA editing, ~5–50-fold lower levels of Cas9-dependent off-...Caulobacter genes using a catalytically dead Cas9 (dCas9) derived from Streptococcus pasteurianus  or ...s lab identified and validated CBEs with reduced Cas9-independent deamination. They generated these editors...fluorescent dCas9-KRAB and dCas9-VPR for quantifying and tracking cells that express both the dCas9 construct...Saccharomyces cerevisiae. The system consists of dCas9, the mammalian transcriptional repressor Mxi1, and...accessible and the complex enters the nucleus where dCas9-Mxi1 can repress gene expression. In the dark, the...Caulobacter cells for ctrA gene expression using various dCas9. Image adapted from Guzzo et al., 2020. Caulobacter...
  7. Plasmids 101: The protein expression toolbox

    Type
    Blog Post
    Published
    Feb. 16, 2023, 7:05 p.m.
    ...out the gene for your protein of interest. CRISPR-Cas9 and a custom gRNA is all you need to generate a ...interference (CRISPRi) targets a catalytically dead Cas9 fused to a transcriptional repressor to your gene...) are transcriptional activators fused to a dead Cas9. The system is led, via a custom gRNA, to your gene...protein levels. Looking for a DD? Check out our DD-Cas9 vector! The price of tunable control These systems...Plasmid 101: Repressible Promoters CRISPR 101: Which Cas9 Do I Choose for my Experiment Additional resources...? Check out Addgene's Lentiviral dCas9 SAM vector and Piggybac dCas9 SAM vector! On/off control all the...repression of protein expression. Addgene has a dCas9 KRAB plasmid for transient knockouts!  Turn it on...
  8. Isolating Genomic Regions of Interest with the CRISPR System

    Type
    Blog Post
    Published
    May 30, 2019, 12:44 p.m.
    ...catalytically inactive form of Cas9 known as dCas9 (Jinek et al., 2012). Like Cas9, dCas9 can bind to a specific...editing, numerous discoveries have been made using the Cas9 nuclease in the absence of genomic alterations. ...reported, as well as affinity purification with an anti-Cas9 antibody. These different tag systems and affinity...Using similar affinity purification with an anti-Cas9 antibody, the Li lab found a microRNA (miR483) that...PMCID: PMC3664290.  Zhang, Yiqun, et al. "CRISPR Cas9-guided chromatin immunoprecipitation identifies ...targeting gRNA. But dCas9 does not cleave the DNA. Much of the research using dCas9 has focused on transcriptional...mammalian cells by expressing dCas9 with an N-terminal 3xFLAG tag (3xFLAG-dCas9) and a gRNA targeting their...
  9. CRISPR-mediated Plant Base Editors

    Type
    Blog Post
    Published
    Jan. 3, 2019, 1:35 p.m.
    ...by tethering cytosine deaminase with Cas9 nickase (nCas9). nCas9 creates a nick in the DNA by cutting ...Nickase Cas9 (D10A) Deaminase PAM requirements Reference CBE SpCas9 rAPOBEC1 NGG 6 SpCas9 Target-AID...Bastian Minkenberg, and Yinong Yang. "Boosting CRISPR/Cas9 multiplex editing capability with the endogenous...Targeted base editing in rice and tomato using a CRISPR-Cas9 cytidine deaminase fusion." Nature biotechnology...Precise base editing in rice, wheat and maize with a Cas9-cytidine deaminase fusion." Nature biotechnology...Expanding the base editing scope in rice by using Cas9 variants." Plant biotechnology journal (2018). PubMed..."Expanded base editing in rice and wheat using a Cas9-adenosine deaminase fusion." Genome biology 19.1...
  10. Mouse Modeling, Part 1: Genetically Engineered Mice

    Type
    Blog Post
    Published
    July 11, 2019, 1:26 p.m.
    ...CRISPR/Cas9-based systems have been developed for generating knockin mice but because CRISPR/Cas9 engineering...recombination for precise gene insertion. However, CRISPR/Cas9 systems are more useful for generating knockout ...to engineer knockout mice. ZFN, TALEN, and CRISPR/Cas9 systems can all be targeted to specific regions ...introduce multiple base pair deletions, but CRISPR/Cas9 can also introduce point mutations. While using ...
  11. Hot Plasmids and Viral Preps - March 2021

    Type
    Blog Post
    Published
    March 23, 2021, 1:15 p.m.
    ...and editing with a single Cas9-VPR in Saccharomyces cerevisiae. To control Cas9 activity and influence DNA...CRISPR system developed by Taekjip Ha’s lab where Cas9-gRNA complex binds the target DNA without cleavage...cleavage until it's activated by light. Once activated, Cas9 cleavage can induce DSBs within minutes. New CRISPR... lab developed a chemogenetic system that brings Cas9 to ubiquitin ligase for degradation.      New... editor targets DNA (via catalytically inactive dCas9) to modify chromatin. A fluorescent protein can ...Jacobs-Wagner’s lab produce different levels of dCas9 expression and contain different antibiotic resistance...
  12. Pairing CombiGEM and CRISPR for Combinatorial Genetic Screening

    Type
    Blog Post
    Published
    April 12, 2016, 2:30 p.m.
    ...activity and minimize off-target effects of CRISPR-Cas9." Nature biotechnology (2016). PubMed PMID: 26780180...transcriptional activation by an engineered CRISPR-Cas9 complex." Nature (2014). PubMed PMID: 25494202. ...PMC4559080. 8. Shalem, Ophir, et al. "Genome-scale CRISPR-Cas9 knockout screening in human cells." Science 343.6166..."Genetic screens in human cells using the CRISPR-Cas9 system." Science 343.6166 (2014): 80-84. PubMed ...Wong, Alan SL, et al. "Multiplexed barcoded CRISPR-Cas9 screening enabled by CombiGEM." Proceedings of the...
  13. Addgene's Top 10 Blog Posts of 2015

    Type
    Blog Post
    Published
    Dec. 7, 2015, 6 p.m.
    ...repository use Cas9 to cut DNA, Addgene Science Communications Intern Mary Gearing explains how Cas9 homolog,... suggestions. 8. A Match Made in Heaven: CRISPR/Cas9 and AAV Adeno-associated viral (AAV) vectors are...Validating Your Genome Edit Once you’ve used CRISPR/Cas9 to make a change to the genome, you need to check...
  14. Donations from Addgene to Yield Answers for Rare Disease Researchers

    Type
    Blog Post
    Published
    Sept. 15, 2015, 2:30 p.m.
    ...pluripotent stem cell (iPS) technology and CRISPR-Cas9 constructs from Addgene to gene-edit mutations into...looking at a bunch of different strategies with CRISPR-Cas9. There are so many different variants and strategies... of those mutations, they now plan to use CRISPR-Cas9 technology to create cell lines and/or mouse models...ve proposed to use plasmids with modified nickase Cas9 protein in order to target the specific gene region...
  15. Hot Plasmids - June 2019 - Optogenetics, Acoustic Reporter Genes, microRNAs, and the CRISPR-Cas9 system CHIME

    Type
    Blog Post
    Published
    June 6, 2019, 12:41 p.m.
    ...Screening immune cell lineages in vivo using the CRISPR-Cas9 system CHIME Article contributed by Aliyah Weinstein...custom nucleases for each gene of interest. CRISPR-Cas9 tools have been used in immunology for in vitro ...Medical School developed a solution: CHIME, a CRISPR-Cas9 system that can edit genes in any immune lineage...expressed this construct in bone marrow stem cells from Cas9-expressing mice, and used the cells to reconstitute...
  16. CRISPR 101: Homology Directed Repair

    Type
    Blog Post
    Published
    Jan. 26, 2023, 2:15 p.m.
    ...Homology directed repair and genome engineering CRISPR-Cas9 has revolutionized the genome engineering world ...the gRNA/PAM site remains intact. In other words, Cas9 will keep cutting and repairing your target DNA ...References: Genome engineering using the CRISPR-Cas9 system. Ran FA, et al. Nature Protocols Nov;8(11... 114.169771; (2014). PubMed. The Use of CRISPR/Cas9, ZFNs, and TALENs in Generating Site-Specific Genome...of Genome Engineering Approaches with the CRISPR/Cas9 System. Li, K et al. PLoS ONE 9(8); (2014). PubMed...editing by catalytically active and inactive CRISPR-Cas9 using asymmetric donor DNA. Richardson CD, et al...
  17. Your Top Requested Plasmid in 2015!

    Type
    Blog Post
    Published
    Dec. 30, 2015, 3:30 p.m.
    ... lentiviral transfer vector used to deliver both Cas9 and your gRNA of interest to mammalian cells. It... blog post on Genome-wide Screening Using CRISPR/Cas9. If you need help cloning a gRNA into lentiCRISPR...References 1. Shalem, Ophir, et al. "Genome-scale CRISPR-Cas9 knockout screening in human cells." Science 343.6166...
  18. dTAG - You're it!

    Type
    Blog Post
    Published
    June 21, 2018, 2:06 p.m.
    ...selective degradation of FKBP12F36V-BRD4 using CRISPR/Cas9-mediated knock-in, and to evaluate in vivo degradation... and endogenous ENL was inactivated using CRISPR/Cas9 gene-editing. Featured molecules: dTAG-7 and dTAG...and endogenous MELK was inactivated using CRISPR/Cas9 gene-editing. Featured molecules: dTAG-7, dTAG-13...engineered to express YY1-FKBP12F36V using CRISPR/Cas9-mediated knock-in. Featured molecule: dTAG-47 Additional...Knock-In and Conditional Mouse Models CRISPR 101: Cas9 Nickase Design and Homology Directed Repair Plasmids...
  19. What's New in CRISPR - Spring 2019

    Type
    Blog Post
    Published
    March 21, 2019, 12:47 p.m.
    ... - this time using the Staphylococcus aureus Cas9 (SaCas9). This AAV-based genome editing system is regulated...the Cas12b plasmids  Plant base editing with a Cas9-adenosine deaminase fusion Caixia Gao’s lab has ...tRNA adenosine deaminase that is fused to a nicking Cas9. This base editor can be used for A•T to G•C edits... in Molecular Neuroscience Find the AAV-based SaCas9 genome editing plasmids String assembly gRNA ...
Showing: 101 - 120 of 247 results