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Showing: 21 - 40 of 228 results
  1. Controlling for Off-target Effects with a New Genome-wide CRISPR Screen Design

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    Blog Post
    ...   Bassik lab’s CRISPR knockout libraries Overview of Library To better define the optimal conditions...infected with Cas9. Validating the Library The CRISPR knockout library was validated via a growth screen...this guide to pooled plasmid libraries Find all of the CRISPR Pooled Libraries currently available from Addgene...screens, the Bassik lab created a human knockout library that has 10 gRNAs per gene and targets all ~20,...selecting guides. Guides were delivered as a pooled library via a lentiviral vector to cell lines that either...been identified (Hart et al, Bassik et al). The library performed well in both screens, with the growth... essential genes while previous Cas9 and shRNA library screens only identified  60% of the essential genes...
  2. Twenty Years of Addgene Sharing: CRISPR

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    Blog Post
    ..., and other. The first libraries deposited with Addgene were knockout libraries, and they remain the most...Figure 1C), and the cumulative number of CRISPR libraries Addgene has distributed (1C), from 2012 to 2023...plasmids by year. (D) Cumulative CRISPR pooled libraries shipped by year.   As of the end of 2023, ...almost 300,000 CRISPR plasmids and 12,000 CRISPR libraries (Figure 1D). That’s a lot of editing!  CRISPR...people doing with all these CRISPR plasmids (and libraries)? We wanted to know, so we classified CRISPR plasmids... We did a similar analysis with CRISPR pooled libraries, although we used different categories (Figure...smoothing. (C) Number of requests per year for pooled libraries, categorized by function, from 2014 to 2023. ...
  3. Pairing CombiGEM and CRISPR for Combinatorial Genetic Screening

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    Blog Post
    ...led to the rapid generation of genome-wide gRNA libraries that knock out (Doench et al., 2016; Hart et al...platform provides a means to create barcoded gRNA libraries that can be used to combinatorially modify the...rounds of digestion and ligation result in plasmid libraries containing combinations of different gRNAs in ...research teams to build and constantly improve gRNA libraries, excellent resources with effective gRNAs are ...Figure 1: Strategy for assembling the barcoded gRNA library pool. (Adapted from Wong et al., 2016). With...you can then readily generate your barcoded gRNA library sequences via oligo synthesis using the format ... the storage vector, the pooled, barcoded gRNA library is now ready for CombiGEM-based assembly into the...
  4. Hot Plasmids - October 2020

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    Blog Post
    ...Addgene The Human GlycoGene CRISPR Library is a new lentiviral CRISPR library that targets human glycosyltransferase...inhibition pooled library is now available as lentiviral preps in addition to the pooled library format! The...proteins related to cellular glycosylation. Get the library at Addgene CasRx is a RNA targeting Cas system...and screening Applications (CHyMErA) Knockout Libraries express hybrid Cas9-Cas12a gRNAs under a single...promoter. The paralog and dual-targeting hybrid gRNA library can be used to identify genetic interactions between...between paralogs. The exon-deletion hybrid gRNA library deletes human alternative cassette exons and disrupts...disrupts genes with alternative exons. Get the library from Addgene New from the viral service By Jason...
  5. Viral Vectors 101: Viral Applications

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    Blog Post
    ...transfections, preserving cell viability. Library delivery Screening libraries, large collections of biological...transcription factors, barcoded libraries to trace cell lineage, and so much more! Libraries allow you to test thousands...increasingly popular tools with many applications. These libraries include sgRNAs targeting the entire genome, overexpression... instead of just one at a time. Many of these libraries are packaged and delivered with viral vectors ... host cell) can be tuned so that the copies of library cargo delivered are controllable. For many screening... is essential to deliver a single copy of your library cargo to isolate the effects of each variable being...manipulated. Thus, the adjustable nature of viral libraries makes them the ideal vector for the job. Therapeutic...
  6. No Llamas Required - Synthetic Nanobodies Against Membrane Proteins

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    Blog Post
    ...in-vitro translation of the mRNA libraries. Each mRNA molecule in the library doesn’t encode a stop codon,...The Seeger lab designed 3 different mRNA sybody libraries for use in the protocol, which cover 3 naturally-occurring...concave, loop, and convex). Each of these 3 mRNA libraries have a concave, loop, or convex scaffold and are...Seeger lab can directly provide the three sybody libraries in the form of mRNA for academic research. The...The template plasmids for generating your own libraries are also available in the Sybody Generation Toolbox...positions that can be randomized for creating the libraries (Zimmermann et al., 2018). Find the Sybody Generation...Generation Toolbox! Starting with libraries and a biotinylated (for purification purposes) protein target...
  7. Hot Plasmids - December 2019 - CRISPR pooled library, LipoGlo, CRISPRa, and Voltage Imaging Tools

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    Blog Post
    ...CRISPR knockout library Article contributed by Alycia Bittner CRISPR pooled libraries are popular tools...CRISPR knockout library using gRNAs designed by the Kosuke Yusa Lab. This retroviral library was used to ...introduce the gRNAs into cells. Most CRISPR pooled libraries have been created in lentiviral systems for mammalian...lentivirus, and thus screening with available CRISPR libraries was not possible. Primary murine T cells cannot...screen readout. This retroviral mouse CRISPR pooled library can be used for screening of cells that are refractory...genetic tools. Find the mouse CRISPR knockout library at Addgene. Henriksson et al., Cell, 2019. PubMed...
  8. Modulate the Activity of 17 Signaling Pathways with One Kit!

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    Blog Post
    ...studies in the literature to curate the perfect library, obtained the appropriate cDNAs from other researchers...and attached a DNA barcode to each to make the library usable for pooled screens. Applications of the ... over the world who are interested to use our libraries to do things - sometimes drug screens and sometimes...possible.” The researchers have plans to expand the library to include activators for more cancer-related pathways...on the Addgene Blog Learn How the Clon Tracer Library Has Been Used in Cancer Lineage Tracing Read How...Find Other Kits for Your Research Find Pooled Libraries for Your Research View our Hot Plasmid Pages to...
  9. Single-cell tracking of lineage and identity with CellTag

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    Blog Post
    ...the diversity of the CellTag library. The fixed region acts as a library-specific identifier and allows...different CellTag libraries at multiple timepoints during reprogramming. These library-specific identifiers...time but they were not silenced.    Find CellTag libraries here!  Applications of CellTag The Morris Lab ...were sequentially tagged with different CellTag libraries at three time points during the 28 day study: ...looking to use CellTag, you can find the CellTag libraries at Addgene. The Morris Lab's website also has ...
  10. An Inside Look into Addgene's Dev Team

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    Blog Post
    ...staying on top of any third party library updates. Third party libraries are reusable software components...labels. These libraries in turn need to stay up to date with their third party libraries and any security...updating these libraries is straight forward. However, there are times where a library is no longer being...incorporated into software. You can think of these libraries as ingredients to a recipe. It’s unrealistic to...ingredients.  For example, we use a third party library to handle label printing in our software. What ...need to research and hopefully find a comparable library if it’s gone stale or we will need to update our...our code to be compatible with the updated library. A recent example is updating our software from Python...
  11. 27 Hot Plasmids from 2016

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    Blog Post
    ... Wu lab human lentiviral CRISPR library     CRISPR pooled libraries enable researchers to screen the... developed a pooled CRISPR knockout library and used this library to screen for genes involved in West...use the library, the authors packaged it into lentivirus and used the resulting lentiviral library to generate... Wu lab knockout library is available alongside a growing number of CRISPR libraries from Addgene’s repository...KnockOut (TKO) CRISPR Library. This complex second-generation CRISPR lentiviral library targets nearly all... site. In STARR-seq, randomly sheared genomic libraries are cloned downstream of a minimal promoter sequence...Nile Virus (WNV) induced cell death. The Wu lab library consists of 77,406 individual gRNAs targeting a...
  12. Hot Plasmids and Viral Preps - May 2021

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    Blog Post
    ... Here's what you'll find in this post: Pooled library to study antibody escape in SARS-CoV-2 Recombinant...Cancer Research Center developed a pooled plasmid library encompassing all possible amino acid mutations ...protein.   Figure 1. (A) SARS-CoV-2 RBD DMS Library generation and sequencing. From Starr et al Cell...antibody-escape mutations with the yeast display library. From Starr et al Science., 2021. SARS-CoV-...target of most anti-SARS-CoV-2 antibodies. In the library, each plasmid encodes the mutated spike protein...the yeast cell’s surface. The Bloom lab used the library to identify RBD mutations which do not interfere...antibody candidates using a synthetic human scFV library and characterized them by ELISA, homogeneous time...
  13. Hot Plasmids and Viral Preps - September 2021

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    Blog Post
    ...the past couple months including several pooled libraries: Cas13X and Cas13Y, two compact Cas13 proteins...lines. The Turner Lab Human messenger-RBP sgRNA Library targets human mRNA binding proteins with 10 guide...addition to puromycin resistance.  The MYC-CRISPR library targets E-boxes genome-wide. It was designed based... in a wide range of human cells.  A new pooled library from Junjie Chen's lab targets human genes known... response and DNA repair.  A new CRISPR pooled library targeting S. pneumoniae D39V from Jan-Willem Veening... other pneumococcal strains. The BARBEKO sgRNA library uses CRISPR cytosine base editors to disrupt gene...
  14. The AAVantages of AAV in CRISPR Screens

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    Blog Post
    ...resources at addgene.org CRISPR pooled libraries Guide to pooled libraries CRISPR guide AAV guide ... by the wide array of lentiviral-based CRISPR libraries available at Addgene. The large packaging capacity... of these screens is the same: Deliver CRISPR library to cells of interest. Select for cells of interest... starts with transducing cells with the CRISPR library in vitro before transplanting them into mice. For...screens, mice are directly infected with the CRISPR library. In vivo screens can become costly, so having an...tissue-specific diseases, as you can target your library to a significant degree using different types of... and means you can use smaller volumes of your library for each experiment. Additional considerations ...
  15. Plasmids 101: Screens vs. Selections

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    Blog Post
    ...Blog CRISPR libraries Genome-wide screens with CRISPR Lentiviral CRISPR libraries ...-wide knockout screens are possible with gRNA libraries targeting all known genes. This is a perfect example... knock down gene expression temporarily. RNAi libraries are especially useful if you are interested in...between the two, it’s time to check out our CRISPR library resources or our RNAi resources and go fishing!... Dijkhuizen, L. Directed evolution of enzymes: Library screening strategies. IUBMB Life, 61: 222-228 (...
  16. Technique: Probe Phage Genomes for Host Binding Proteins

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    Blog Post
    ...this method. Step 1: Prepare a random fragment library of phage DNA This first step involves digesting...  Ligate and transform your resultant plasmid libraries into chemically competent E. coli and analyze ...for appropriately sized inserts. We consider a library worth using if at least 40% of colonies tested ... liquid culture, dilute and plate the complete library of transformants for single colonies (this usually...competent strain that you can use for long-term library storage. After overnight growth, scrape up, pool...well, the proteins encoded by the plasmids in the library will remain attached to the membrane at the same... or to any “sticky” proteins expressed by your library. After blocking for 1 h at room temperature with...
  17. What's New in CRISPR - May 2019

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    Blog Post
    ...Candida albicans E. coli genome-wide inhibition library To expand the tools available for genome-wide studies...developed a genome-scale CRISPR inhibition pooled library (~60,000 gRNAs) that targets ~4,000 E. coli genes...10,000 gRNAs targeting intergenic regions. The libraries also include 2,400 gRNAs without any significant...Find the E. coli genome-wide CRISPR inhibition library Covalent tethering of DNA repair template to Cas9...
  18. Early Career Researcher Toolbox: Free Tools for Science Writing

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    Blog Post
    ...highlight the papers saved to your Mendeley library. The library is stored in the cloud, so you can access...academic. If you can’t borrow this book from your library or don’t have time to read the book, this list ...Mendeley Cite lets you cite papers from your Mendeley library in Microsoft Word. Mendeley has a web and desktop... synced across devices, and you can share your library with others which makes it easier to work with ...
  19. Hot Plasmids - June 2020 - Barcoded CRISPR Library, Sparse Cell Labeling, Calcineurin Reporter, and DNA Staining Dye Alternative

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    Blog Post
    ...sign up here.  Human whole genome sgRNA iBAR library Article contributed by Susanna Bachle Figure...loop region. After infecting cells with sgRNAiBAR library containing lentiviral vectors the iBARs can be ...low multiplicity of infection (MOI) during cell library construction to ensure that the majority of cells... and their iBAR sequences. Since the sgRNAiBAR library covers every annotated human gene, it enables genome-wide...cells and in vivo settings. Find the sgRNAiBAR library!  Zhu et al., Genome Biology, 2019. PubMed PMID...
Showing: 21 - 40 of 228 results