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Showing: 121 - 140 of 221 results
  1. The AAVantages of AAV in CRISPR Screens

    Type
    Blog Post
    Published
    Feb. 4, 2025, 2:15 p.m.
    ... to use variants of Cas9, like split Cas9, or a smaller Cas9 ortholog like SaCas9. You could even venture...to use a multi-plasmid system, where you have one AAV vector dedicated to expressing Cas9, while the other...at double-stranded break points caused by CRISPR-Cas9 editing. The good news is that this integration ...approximately 4.7 kb — which means that when using Cas9, you’re already almost out of space! Don’t let this...venture away from the comfort of Cas9, and opt for a completely different Cas effector, like Cas12a (Cpf1...
  2. Design Tips for Prime Editing

    Type
    Blog Post
    Published
    Jan. 23, 2025, 2:15 p.m.
    ...the CRISPR guide Find CRISPR plasmids by function Browse our entire plasmid collection ...editing technique that relies on a fusion enzyme of Cas9 nickase + reverse transcriptase and a prime editing...., 2019), disrupting its canonical structure and Cas9 binding (Nishimasu et al., 2014). Figure...pegRNAs that use other bases in this location bind to Cas9 with canonical sgRNA structure (right). Created ...along with your intended edit. This prevents the Cas9 nickase from re-binding and nicking the newly synthesized...Zhang, F., & Nureki, O. (2014). Crystal Structure of Cas9 in Complex with Guide RNA and Target DNA. Cell, ...
  3. Sequencing Options for CRISPR Genotyping

    Type
    Blog Post
    Published
    Oct. 4, 2016, 2:30 p.m.
    ...Use Cas9 Activators Perform Genome-Wide Screens with CRISPR Generate Mouse Models with CRISPR/Cas9 Additional...techniques, please see “Methods for Optimizing CRISPR-Cas9 Genome Editing Specificity” by Tycko et al. 2016...improving the genome-wide specificities of CRISPR–Cas9 nucleases”
by Tsai and Joung 2016. Many thanks ...high-throughput screening strategy for detecting CRISPR-Cas9 induced mutations using next-generation sequencing...of off-target DNA cleavage reveals RNA-programmed Cas9 nuclease specificity." Nature biotechnology 31.9.... "Digenome-seq: genome-wide profiling of CRISPR-Cas9 off-target effects in human cells." Nature methods...Unbiased detection of off-target cleavage by CRISPR-Cas9 and TALENs using integrase-defective lentiviral ...
  4. Open Resources and Plasmid Tools For Studying C. elegans

    Type
    Blog Post
    Published
    July 18, 2019, 12:55 p.m.
    ... CRISPR plasmid can be created in a single tube. You can also find additional SapTrap plasmids used for...about SapTrap Read about CRISPR/Cas9 in C. elegans Browse our Plasmids 101 blog posts Resources on Addgene.org...discussed at the meeting, in addition to useful plasmids and toolkits available at Addgene.  C. elegans... development (Kyoda et al., 2012).  C. elegans plasmid tools at Addgene In addition to the wealth of open...open resources described above, there were many plasmid tools presented at the C. elegans meeting. Here... on new resources and tools for the community. Plasmids for the Auxin Inducible Degradation System (AID...and temporally knock-down proteins of interest.  Plasmids for cGAL and split cGAL systems The Sternberg ...
  5. Cas13d: Small RNA-targeting CRISPR enzymes for transcriptome engineering

    Type
    Blog Post
    Published
    May 3, 2018, 1:48 p.m.
    ...EsCas13d. Find the Yan et al. plasmids here Find the Konermann et al. Plasmids here How do Cas13d enzymes...than other Cas13s and a whopping 33% smaller than Cas9! Their small size makes then easy to package in ...significant off-targets, CasRx displayed zero. Unlike Cas9, for which efficiency varies widely across guide...S0092-8674(18)30207-1. PubMed PMID: 29551272 Plasmids from this paper are available at Addgene. Yan...S1097-2765(18)30173-4. PubMed PMID: 29551514 Plasmids from this paper are available at Addgene. Learn...CRISPR RNA Editing with REPAIR Get tips for using Cas9 Transcriptional Activators Learn about Cas13a (C2c2... Resources on Addgene.org: Find RNA Knockdown Plasmids Check out our CRISPR Guide Read our CRISPR History...
  6. New CRISPR Web Resources and #12DaysofCRISPR Recap

    Type
    Blog Post
    Published
    Dec. 12, 2017, 3:13 p.m.
    ...changes we’ve made: New CRISPR plasmid pages We’ve given our CRISPR Plasmids and Resources a fresh new design...design, sorting the plasmids we have available by category. Each plasmid page now has a helpful graphic...introduce you to the plasmid class covered on that page. To help you find popular plasmids, we’ve also added... new plasmid pages that cover some of the hottest CRISPR tools. Base Edit: Base editing plasmids allow...libraries: Genome-Wide Screening Using CRISPR/Cas9 and Plasmids 101: NGS Quality Control for Pooled Libraries...revolution, Addgene has distributed over 100,000 CRISPR plasmids. But that’s not our only job - we strive to also...up with new developments (and, of course, find plasmids that will be useful to you.) With these goals...
  7. 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–...Addene.org Read Addgene's CRISPR Guide Find CRISPR plasmids for your research ... 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...
  8. CasPEDIA: A Functional Classification of Cas Enzymes

    Type
    Blog Post
    Published
    Jan. 25, 2024, 2:15 p.m.
    ...the exact Cas9 plasmid used by Jinek et al. 2012, or browsing for the latest AsCas12a plasmids, Addgene... CRISPR 101: Which Cas9 do I choose for my CRISPR experiment? CRISPR 101: Cas9 The Other Cas(s) The...find a link to search Addgene's collection for plasmids containing that enzyme, and embedded in the References...lists on every page you can find direct links to plasmids from the article if they're available through ...Once upon a time, not so long ago, spCas9 was the only Cas enzyme widely available and applied by researchers...and trans activity of each entry. For example, SpyCas9a (one of the most frequently used Cas enzymes) ...CasPEDIA Cas ID display information for a given Cas (SpyCas9a) from CasPEDIA.   Helpful resources and information...
  9. Reaching out to China: Canton Nucleic Acids Forum (CNAF) 2015

    Type
    Blog Post
    Published
    Dec. 1, 2015, 3:30 p.m.
    ... tetracycline cas9 inducible knock-out system. His lab is also exploring the use of cas9 proteins from... Addgene’s experience helping scientists share plasmids, especially those of the CRISPR variety (see slides...is in one of the top 10 countries in number of plasmid requests from Addgene. Addgene - Canton Nucleic...proposes using bacterial phage vectors with CRISPR/cas9 sensitizing gene cassettes. Thse vectors are engineered...There are many clever ways labs are using CRISPR/cas9 and more are being reported. Zhou Songyang from ...
  10. PiggyBac-ing Through the Genome Editing Field

    Type
    Blog Post
    Published
    May 31, 2016, 3:30 p.m.
    ...the ability to distribute plasmids with the piggyBac™ transposon. These plasmids, when combined with a source...useful resource. While Addgene cannot distribute plasmids with the piggyBac™ transposase itself, please ...genome fully intact, while, with a standard DNA plasmid transfection, a double-stranded break may occur...the development of site-specific nucleases (CRISPR/Cas9, TALENs, and ZFNs). However, several challenges ...piggyBac™ transposon system can be combined with CRISPR/Cas9 to efficiently perform genetic manipulations in ...by utilizing a piggyBac™ transposon in a donor plasmid carrying the DNA edit of interest, along with a... a site-specific nuclease (such as CRISPR/Cas9) to create a double-stranded DNA break. After DNA cleavage...
  11. CRISPR-Cas14: a family of small DNA-targeting enzymes enabling high-fidelity SNP genotyping

    Type
    Blog Post
    Published
    Nov. 29, 2018, 1:53 p.m.
    ...primitive version of the larger and more complex Cas9 and Cas12 proteins. Cas14 cleaves ssDNA But what...regions containing the putative tracrRNA into a plasmid and expressed it in an E. coli bacteria strain.... and cleave a targeted sequence of ssDNA. Unlike Cas9, Cas14 does not require a PAM sequence. In addition...sheet Resources on Addgene.org Find the Cas14 plasmids here Checkout our CRISPR guide page Browse the...
  12. Hot Plasmids Spring 2024

    Type
    Blog Post
    Published
    May 23, 2024, 1:15 p.m.
    ...of the new plasmids, antibodies, and viral preps in our repository through our Hot Plasmids articles.  ...2 nucleocapsid protein (Plasmid #141391-LV [+N]) or membrane protein (Plasmid #141386-LV [+M], negative...Blainey’s lab has developed a multiplexing approach to Cas9-based pooled CRISPR screens called CROPseq-multi... over the original CROPseq. Find CROPseq-multi plasmids here Walton, R.T., Qin, Y., Blainey, P.C. (2024...Anzalone et al., 2019, including modifications to the Cas9 or reverse transcriptase enzymes, inhibition of ...end of the pegRNA, which is not well protected by Cas9. This is similar to the proposed mechanism for engineered...potential improvements to the editor. Find PE7 plasmids here!     Figure 2: PE7 improves prime...
  13. 22 Hot Plasmid Technologies from 2014

    Type
    Blog Post
    Published
    Jan. 6, 2015, 5:21 p.m.
    ... New CRISPR plasmids available! Interested in purifying Cas9? Check out pET-28b-Cas9-His from Alex ... Hot Plasmid list. Other popular plasmids & blog posts @Addgene: The 10 Most Distributed Plasmid Technologies...Yonglong Chen, pCS2-3xFLAG-NLS-SpCas9-NLS is a Cas9 expression plasmid that was used by Chen and colleagues...inducible inactivation. Find the Robinson plasmids or the Royle plasmids and get to work! Robinson et al...step for CRISPR/Cas9 gene editing. Dr. Masahito Ikawa has created a GFP reporter plasmid for scientists...expressed along with Cas9. If the gRNA effectively cuts the target sequence, the plasmid undergoes HR or SSA...designed the pOSIP (one-step integration plasmid) series of plasmids, vectors that convey both the sequence...
  14. CRISPR Meets Synthetic Biology: A Conversation with MIT’s Christopher Voigt

    Type
    Blog Post
    Published
    April 22, 2015, 2:06 p.m.
    ...speaking with us! Find the Plasmids: Plasmids for multi-input CRISPR/Cas9 genetic circuits References...almost limitless number of DNA binding proteins with Cas9 guided by different promoters. The challenge in ... that stop it from being used. One thing is that Cas9 is toxic. When cells carry CRISPR circuitry, it ...
  15. Hot Plasmids - May 2022

    Type
    Blog Post
    Published
    May 26, 2022, 1:15 p.m.
    ...subset of the new plasmids and viral preps in the repository through our hot plasmids articles. These articles...recent plasmid deposits and we hope they'll make it easier for you to find and use the plasmids you need...mutations. These plasmids contain catalytically inactive dCas9 and microbial SSAPs (dCas9-SSAP) which insert...The dCas9-SSAP system reports an efficiency of up to 20%, comparable to commonly used CRISPR/Cas9 methods...need. If you'd ever like to write about a recent plasmid deposit please sign up here. Here's what you'...easily be applied to other systems.    Find BLITZ Plasmids here! Xiong, et al. eLife. 2021. https://doi.org...from Goertsen D, et al., 2022.  Find M-CREATE plasmids here!  Goertsen D, et al. Nature Neuroscience....
  16. How to Design Your gRNA for CRISPR Genome Editing

    Type
    Blog Post
    Published
    Sept. 24, 2020, 1:15 p.m.
    ... capacity of a locus. When using S. pyogenes Cas9 (SpCas9), potential target sites are both [5’-20nt-NGG... (inhibition) technologies – a nuclease-dead Cas9 (dCas9) is directed near the promoter of a target gene...with CRISPR technology is usually accomplished by Cas9-mediated dsDNA breaks: following a cut, the error-prone...even more exquisite for the so-called base editor Cas9, which makes DNA changes in the absence of dsDNA...2019) Agreement between two large pan-cancer CRISPR-Cas9 gene dependency data sets. Nat Commun 10: . https...Incidence of Off-Target Mutations in Individual CRISPR-Cas9 and TALEN Targeted Human Stem Cell Clones Detected...CRISPR Basics with Our CRISPR Guide Find CRISPR Plasmids for Your Research Find CRISPR Pooled Libraries...
  17. Advancing Biology with Zebrafish: Genetic Tools for Developmental Studies and More

    Type
    Blog Post
    Published
    Aug. 13, 2019, 12:58 p.m.
    ...Read our plasmids 101 blog series Resources on Addgene.org Browse our zebrafish CRISPR plasmid collection...zinc-finger nucleases, TALENs, and more recently CRISPR/Cas9. Another popular targeted gene deactivation method..., relying on established reagents such as CRISPR/Cas9, Tol2, and the high-quality sequenced zebrafish ..., and their resistance (so far) to facile CRISPR/Cas9-mediated insertion of foreign DNA. Despite these...collection Read our molecular biology reference Find plasmids for your research ...
  18. Harnessing Bacterial Toxins for Allelic Exchange

    Type
    Blog Post
    Published
    Aug. 15, 2019, 12:30 p.m.
    ...Improvement of pCVD442, a suicide plasmid for gene allele exchange in bacteria." Plasmid 51.3 (2004): 246-255. PubMed...(Thomason et al., 2014). In recent years, CRISPR-Cas9 technology has also aided in the creation of scarless...exogenous enzymes, require multiple transformation and plasmid curing steps, and can generate off-target mutations...a mutated allele introduced from a conjugative plasmid replaces the chromosomal copy. This is a versatile... These two steps are (Figure 1): The initial plasmid integration step (the so-called “single crossover... an allelic exchange experiment? Find the pTOX plasmids here! Continued development of new allelic exchange...15109831. Pyne, Michael E., et al. "Coupling the CRISPR/Cas9 system with lambda red recombineering enables simplified...
  19. Plasmids 101: Gibson Assembly and Other Long-Homology Based Cloning Methods

    Type
    Blog Post
    Published
    March 1, 2016, 3:30 p.m.
    ...restriction enzyme or PCR to make linearized vector, the Cas9 enzyme along with a specific gRNA was used to cleave...Ligation Independent Cloning (SLIC) in a previous Plasmids 101 post. Although SLIC may be more cost effective...Li K, Wang B, Jin S, Reiser M, Lockey RF. CRISPR/Cas9 nuclease cleavage combined with Gibson assembly ... Zhao X, Gabrieli T, Lou C, Ebenstein Y, Zhu TF. Cas9-Assisted Targeting of CHromosome segments CATCH ...Resources on the Addgene Blog Browse All of Our Plasmids 101 Posts Read About Other Cloning Techniques ...Techniques Additional Resources on Addgene.org Find Plasmid Cloning Protocols Find Virus Protocols Find Basic...
  20. Expanding the Targeting Scope and Editing Efficiency of Adenine Base Editors

    Type
    Blog Post
    Published
    March 17, 2020, 1:32 p.m.
    ...following components: A plasmid in the host bacterium expressing dCas9 A plasmid in the host bacterium ...compatible with all Cas9 and Cas12 homologs that the researchers tested, including SpCas9, SaCas9, LbCas12a, enAsCas12a...the DNA. ABEs are somewhat slow and need a strong Cas9 domain to “hold on” long enough to the DNA to induce... of gene III to create infectious particles. A plasmid-based genetic circuit in the bacteria links the...encoding the deaminase TadA-7.10 A mutagenesis plasmid controlling the phage mutation rate Phage infection...Phage-assisted evolution of base-editing activity. A plasmid-based genetic circuit in the bacteria links the...off-target RNA editing rate of ABE7.10. Find the ABE8e plasmids at Addgene! Why engineer and optimize base editors...
Showing: 121 - 140 of 221 results