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Showing: 21 - 40 of 43 results
  1. Hot Plasmids and Viral Preps - May 2021

    Type
    Blog Post
    Published
    May 18, 2021, 1:15 p.m.
    ...study.  The zCas9i cloning kit is a plant cloning kit that contains a series of vectors and DNA modules ...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...highlights from recent CRISPR plasmids. To find all of the CRISPR plasmids available from Addgene, head...CRISPR Plasmids and Resources page.  A new system uses light to deactivate photocleavable gRNAs within...targets S. cerevisiae genes with 6-12 guides per gene where gRNA expression is induced by anhydrous tetracycline...Hutchinson Cancer Research Center developed a pooled plasmid library encompassing all possible amino acid mutations...
  2. Plasmids 101: Modular Cloning Applications and Kits

    Type
    Blog Post
    Published
    May 14, 2024, 1:15 p.m.
    ...Modular Cloning (MoClo) Guide Addgene’s eBook Collection More resources on the Addgene blog Plasmids 101...another great option for mammalian cloning, and is geared towards cloning multi-TU expression constructs ...Peripheral Infrastructure Vectors and an Extended Set of Plant Parts for the Modular Cloning System.” PLOS ONE...101: Golden Gate Cloning High Complexity Golden Gate Cloning with NEB’s DAD New MoClo basics blog ...doi.org/10.1371/journal.pone.0197185. Chamness, James C., et al. “An Extensible Vector Toolkit and Parts...Modular cloning is a popular DNA assembly tool used to build single- and multi-gene constructs for a ...should also take a look at the Yeast GoldenBraid Cloning System (Pérez-González et al., 2017). In addition...
  3. CRISPR 101: Engineering the Plant Genome Using CRISPR/Cas9

    Type
    Blog Post
    Published
    Oct. 11, 2016, 2:30 p.m.
    ...stranded guide RNA (gRNA) is sufficient to modify the genome of plant cells. The structure of the gRNA (composed...Agrobacterium-compatible, Cas9 containing vectors ready for Golden Gate mediated cloning of your gRNA of interest. Figure...plant-derived RNA pol II promoters which regulate expression of longer RNAs (such as mRNAs for gene expression... to drive gRNA expression is dependent upon the cell type in question. In plant cells, gRNA expression...expression is achieved by placing the gRNA downstream of a plant-specific RNA pol III promoter, such as AtU6, ...expression of small RNAs in their respective species. Addgene carries >30 “empty gRNA” backbones which contain... and gRNA scaffold sequence and allow researchers to insert targeting oligos with minimal cloning required...
  4. Genome-wide Screening Using CRISPR

    Type
    Blog Post
    Published
    Aug. 18, 2015, 2:30 p.m.
    ...single stranded guide RNA (gRNA). The ~20 nucleotide targeting sequence within the gRNA is defined by the...in a 1-plasmid system, in which Cas9 is included on the gRNA-containing plasmid, or a 2-plasmid system... synthesized. Pooled gRNAs are then cloned into lentiviral transfer vectors to create the CRISPR library...contain thousands of gRNA plasmids, discerned only by a unique barcode on each plasmid. As such, sequencing...Addgene: Find CRISPR Plasmids Read our CRISPR Guide Find tools to design your gRNA ...libraries are composed of many different gRNA-containing plasmids, each with a different genomic target....target sequences and ease of generating gRNA-containing plasmids. CRISPR genome wide-screening experiments...
  5. CRISPR 101: Mammalian Expression Systems and Delivery Methods

    Type
    Blog Post
    Published
    Sept. 24, 2015, 2:30 p.m.
    ... in vivo viral delivery. Cas9 mRNA and gRNA Plasmids containing gRNA and Cas9 are used in in vitro transcription...Cas9 and gRNA can be present in a single lentiviral transfer vector or separate transfer vectors. May contain...transcription reactions to generate mature Cas9 mRNA and gRNA. RNA is delivered to target cells using microinjection...decreases as RNA is degraded within the cell. Can be used for generating transgenic embryos. Cas9-gRNA ribonucleoprotein...protein and in vitro transcribed gRNA are combined to form a Cas9-gRNA complex and delivered to cells using...Addgene.org Browse CRISPR Plasmids for Mammalian Systems Check out our CRISPR Guide Pages View CRISPR Protocols...EGFP validation of sgRNAs: Can evaluate component delivery and sgRNA efficacy by cloning in genome target...
  6. Cpf1: A New Tool for CRISPR Genome Editing

    Type
    Blog Post
    Published
    Oct. 14, 2015, 2:30 p.m.
    ...100 nt crRNA/tracrRNA hybrid guides needed for Cas9 function. Since both Cpf1 and its guide RNAs are smaller...our CRISPR guide for a refresher on CRISPR/Cas9.  Figure 1: Cpf1 is a single RNA-guided endonuclease...deliver in low-capacity vectors, such as adeno-associated viral (AAV) vectors. In 2017, Zetsche et al....tolerate mismatches at gRNA positions 1, 8, 9, and 19-23. Accordingly, the 3’ end of the gRNA target sequence...Later work, like the adaptation of Cas13 to RNA targeting and RNA editing, has further shown the diversity...References 1. Zetsche, Bernd, et al. "Cpf1 is a single RNA-guided endonuclease of a class 2 CRISPR-Cas system."...at Addgene Find CRISPR plasmids at Addgene Read Addgene's CRISPR Resource Guide View Other CRISPR Blog...
  7. 28 Hot Plasmid Technologies from 2015

    Type
    Blog Post
    Published
    Dec. 23, 2015, 3:30 p.m.
    ...expression vector which gives close to 100% cloning efficiency and gene expression. The pUCXKT vector ensures...desired insert is cloned using traditional restriction enzyme cloning to create an Entry vector containing a...with custom-cloned vectors in a Multisite Gateway reaction with a desired destination vector expressing...general purpose cloning vector pU6_(Gluc)_INT(GenPurpClon) which can accept a novel RNA sequence of interest...machinery that brings the sgRNA/cargo RNA to the appropriate DNA locus. The sgRNA/RNA fusions retained their...large RNA cargos to specific DNA loci. In CRISPR-Display, your RNA of interest is fused to an sgRNA used...amazing plasmid technologies developed by our community of depositors. With over 40,000 plasmids avaliable...
  8. Plasmids 101: The protein expression toolbox

    Type
    Blog Post
    Published
    Feb. 16, 2023, 7:05 p.m.
    ...some permanent knock out plasmids? Check out our Cre vector and Murine LoxP vector.   Turn it off for a little...out Addgene's Lentiviral dTAG cloning vector and SMASh degron tagging vector! Destabilizing domains Destabilizing... the Addgene website Promoter Guide CRISPR Guide Lentiviral Guide  ... a gene (cDNA) can be done by either plasmid or virus. A plasmid carrying your cDNA can be targeted for...? Check out our Retro expression vector and Lenti expression vector. Turn it on for just a little while...out Addgene's Lentiviral dCas9 SAM vector and Piggybac dCas9 SAM vector! On/off control all the time If ...resources on the Addgene blog Plasmid 101: Inducible Promoters Plasmid 101: Repressible Promoters CRISPR...
  9. With Our New Viral Service, We're Taking CRISPR Further!

    Type
    Blog Post
    Published
    Dec. 6, 2016, 3:30 p.m.
    ...not always an easy process. The cloning capacity of lentiviral vectors (~8.5 kb of insert) and the reduced... highly requested gRNAs including those targeting EGFP, BRAF, and MAP3K4. The gRNAs targeting EGFP can...MAP3K4 gRNAs allow you to target these widely studied signalling pathways. Find Validated gRNAs to use...their proper use; after receiving a pooled gRNA library in plasmid format, a researcher must amplify the library...has retained gRNA representation, produce high titer lentivirus from the library, ensure gRNA representation...receive transfer plasmid DNA that you can use along with lentiviral packaging plasmids to create your own...Viral Service Page Check Out Our CRISPR Guide Pages Find Viral Vectors ...
  10. Fluorescent Tagging of Endogenous Genes with SapTrap

    Type
    Blog Post
    Published
    Oct. 12, 2017, 2:26 p.m.
    ...genomic site specified by a guide RNA (gRNA) sequence. Users can design gRNAs to induce the break at a specific... users need 3 vectors:  1) a gRNA vector that targets the gene of interest, 2) a plasmid to specify the...reaction to generate high-throughput targeting vectors. These vectors can be used to tag endogenous genes and...There is no need for PCR or cloning, as digestion of the destination vector with SapI yields 2 sites- the...the final targeting vector (Fig. 1, Step 4), and co-injection of the targeting vector and a Cas9 expression...site destination vectors for inserting a tag at multiple target sites. SapTrap vectors can be easily modified...and 3) a vector containing the desired tag, which can be obtained as a universal donor plasmid. The CRISPaint...
  11. Viral Vectors 101: Parts of the AAV Transfer Plasmid

    Type
    Blog Post
    Published
    Aug. 11, 2020, 1:15 p.m.
    ...with some plasmids. You just need three plasmids to start making AAV:  the packaging plasmid which contains... transfer plasmid an AAV transfer plasmid. ITR sequences are 145 bases each and AAV plasmids have two ...aids in the nuclear export of RNA and RNA translation, and promotes RNA transcript longevity. The polyA...of an AAV transfer plasmid. Parts shown in green are key elements of an AAV plasmid. Parts shown in grey... elements of an AAV plasmid First let’s talk about the key parts of an AAV plasmid. Inverted terminal ...the ITRs does not get packaged in the AAV vector. The cloning capacity between the ITRs is ~4.4 kb. ITRs...transfer plasmids have a promoter, but this element isn’t required when the transfer plasmid harbors non-coding...
  12. Hot Plasmids - August 2020

    Type
    Blog Post
    Published
    Aug. 18, 2020, 1:15 p.m.
    ...expression of nearly any gene via specific guide RNA (gRNA) sequences. But these approaches rely on continual...cells expressing both dCas9 and gRNAs. The multi-gRNA piggyBac vector integrates into genomic DNA with...VPR targeting plasmids can be found at Addgene. Check out these plasmids for piggyBac gRNA delivery and...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...They generated plasmids tagged with EB3 to mark the growing tips of microtubuli and plasmids tagged with ...labeled piggyBac vectors for uniform and sustained expression of single or multiplexed gRNAs and of dCas9 ...
  13. Custom CRISPR Screens & the Green Listed Software

    Type
    Blog Post
    Published
    July 11, 2017, 2:30 p.m.
    ...It can be very time consuming to design 5 guide RNAs (gRNAs) targeting each of the 1000 genes you’d like...for this purpose.  The gRNA oligos are subsequently cloned into your vector of choice using the adapter... gene is not targeted by only one gRNA, instead many different gRNAs are used for each gene. At the moment...contain 4-12 gRNAs/gene, which results in libraries containing up to around 200,000 different gRNAs. It has...should use ~400X more cells than gRNAs in a screen, to ensure that each gRNA has a good chance to contribute...multiple gRNAs targeting all genes in the indicated species and were suggested to be the best gRNAs by the...consensus on optimal gRNA design. With Green Listed you can also easily extract gRNAs for the same gene ...
  14. CRISPR 101: Epigenetics and Editing the Epigenome

    Type
    Blog Post
    Published
    June 24, 2020, 5:45 p.m.
    ... LITE Plasmids Resources on Addgene.org Check out Our CRISPR Guide Pages Find Validated gRNAs to Target... made targeting much easier! With the help of guide RNAs, fusions between Cas proteins and the epigenetic...genomic targets. These two vectors are part of the larger pMVP/pMAGIC cloning system, which contains Cas9...CRISPR-based DNA demethylation by Casilio-ME-mediated RNA-guided coupling of methylcytosine oxidation and DNA ... Find plasmids from this publication at Addgene. Liu XS, Wu H, Ji X, Stelzer Y, Wu X, Czauderna S, Shu...cytosine demethylation in mammalian cells. This plasmid is used with pcDNA3.1-MS2-Tet1-CD to decrease methylation...methylation and activate transcription. A lentiviral vector with the same modifier, Fuw-dCas9-Tet1CD, is available...
  15. Viral Vectors 101: Gamma-Retroviral Packaging Systems

    Type
    Blog Post
    Published
    Aug. 6, 2024, 1:15 p.m.
    ...γ-retroviral packaging plasmids are not interchangeable. General envelope plasmids, such as VSV-G (Vesicular...in trans by specific plasmids. This method, therefore, reduces the number of plasmids that are required ...encoded by the transfer plasmid, but instead are provided in trans by other plasmids or the packaging cell...do many γ-retroviral plasmids have similar names? The nomenclature of the plasmid backbone is meant to...retro/lentiviral plasmids. U5; Unique 5'; region at the 5' end of the viral genomic RNA (but found at both...Addgene blog Viral Vector Elements The Retroviral Life Cycle Popular Retroviral Vectors and Their Use in...needed: γ-Retroviral transfer plasmid encoding a transgene, sgRNA, or shRNA of interest: The transgene sequence...
  16. Google Forums Round Up: First Impressions of NgAgo

    Type
    Blog Post
    Published
    Aug. 4, 2016, 2:30 p.m.
    ...preassembled Cas9/gRNA complexes or with guide RNA- and Cas9-expression plasmids. Cas9 guide RNA delivery does...specificity is dictated by a DNA guide sequence rather than an RNA guide as with Cas9. Third, it can be ...company. However, unlike an RNA guide, it cannot be produced from a plasmid in cells. Additionally, in ...with an ssDNA guide. Therefore, researchers must co-transfect cells with 5’-P-ssDNA guides and an NgAgo...does however rely on cloning into a vector or in vitro synthesis, which could be less desirable if one...sequencing on select regions of all distributed plasmids as part of quality control, but does not perform...sharing the stage with much-lauded CRISPR-Cas9 is DNA-guided endonuclease NgAgo! We'll discuss how NgAgo is ...
  17. CRISPR-mediated Plant Base Editors

    Type
    Blog Post
    Published
    Jan. 3, 2019, 1:35 p.m.
    ...Gaudelli et al., 2017). Our vectors have two Bsa1 sites to clone the single guide RNA (protospacer+scaffold)...system. We use a single polycistronic tRNA-gRNA (PTG) gene system to clone multiple protospacers which enables...all CRISPR plasmids and resources at Addgene Find CRISPR base editors Find CRISPR plasmids for plants ...plant We developed plant adenine base editor (ABE) vectors to install A>G or T>C mutations in the plant genome...genome. We constructed three versions of the vector (pKABE6.3, pKABE7.9, and pKABE7.10) so that the user... genomic site simultaneously.     These binary vectors could be used to generate stable genome edited ...Agrobacterium-mediated transformation. We also constructed smaller vectors suitable for transient assays using protoplast ...
  18. Sequencing Options for CRISPR Genotyping

    Type
    Blog Post
    Published
    Oct. 4, 2016, 2:30 p.m.
    ...single cell clones for in vitro CRISPR experiments. The likelihood that a single cell clone derived from...Resources on Addgene.org View Our CRISPR Guide Pages Find CRISPR Plasmids for Your Experiments Get Ready-to-...position of the mismatch along the length of the gRNA given the stricter sequence requirement at the terminal...double-strand breaks (DSBs) evaluated by sequencing (GUIDE-seq) (Tsai et al. 2015) and direct in situ breaks...next-generation sequencing (BLESS) (Crosetto et al. 2013). GUIDE-seq and BLESS detect double-stranded breaks and ...sensitive as targeted amplicon sequencing. For example, GUIDE-seq seems to have a minimum detection limit of 0.1%...Detection Limit Application Advantages Disadvantages GUIDE-Seq 0.1% Cell-based  Searches the genome for all...
  19. Viral Vectors 101: Preparing Pooled Libraries

    Type
    Blog Post
    Published
    July 13, 2023, 1:15 p.m.
    ...single plasmid transformation, though, a pooled library has hundreds to millions of distinct plasmids, all...anyone who has worked with individual plasmids knows, some plasmids amplify well and others don’t. The size...A variety of protocols and guides regarding pooled libraries, from cloning a pooled library to viral production...Addgene, including cDNA, barcoding, screening, and gRNA libraries. Most of the pooled libraries at Addgene...pooled library, which contains a collection of plasmids in a single tube, or a pre-made viral prep library... prepare the libraries for you.  Starting from plasmids requires amplification, verification, and lentiviral...library and appropriate packaging and envelope plasmids into HEK cells allows production of lentivirus...
  20. The AAVantages of AAV in CRISPR Screens

    Type
    Blog Post
    Published
    Feb. 4, 2025, 2:15 p.m.
    ...addgene.org CRISPR pooled libraries Guide to pooled libraries CRISPR guide AAV guide ...workaround is to use a multi-plasmid system, where you have one AAV vector dedicated to expressing Cas9...other houses the gRNA and scaffold. If you don’t feel like doubling the amount of cloning, another option...packaging capacity and stable expression of lentiviral vectors make them an attractive option. However, safety... particularly in vivo ones. In those cases, AAV vector screens may be AAVantageous!       In vivo, in ...delivery method for in vivo CRISPR screens. AAV vectors can be made at high titers equal to those achieved... customization that is unmatched by other viral vector delivery methods. Lentivirus has limited packaging...
Showing: 21 - 40 of 43 results