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Showing: 101 - 120 of 277 results
  1. Plasmids 101: Modular Cloning Applications and Kits

    Type
    Blog Post
    ...conditional gene expression, multiplexed CRISPR, and chromosomal integration of larger expression cassettes ...chromosomal integration and gene expression, the system includes a toolkit to express recombinant proteins within...comparisons between CRISPR components expressed from different plasmid backbones. They noted that backbone...or distance in the placement of plasmid elements can impact expression levels and consequently convolute...Cloning (MoClo) Guide Addgene’s eBook Collection More resources on the Addgene blog Plasmids 101: Golden...modifications which can be especially difficult in alternative expression systems such as bacteria. If your yeast... tools can be used in bacterial and cell-free expression systems, mammalian cells, yeast, flies, and even...
  2. DAP arrays for multiplex gene editing

    Type
    Blog Post
    ...locus of a bacteria host encodes multiple guide RNAs (gRNAs) on a single array to target the genome of...including previous tRNA-gRNA arrays, that rely on an upstream lengthy promoter to express the gRNA array, DAP ...assembled tRNA-gRNAs is placed downstream of a lengthy promoter, which is used to drive the expression of the... the array. After expression, the individual gRNAs are released by endogenous tRNA processing machineries... Gao Lab demonstrated that the tRNA-gRNA array can drive the expression of itself, without using any additional...design examples of using Addgene plasmids hCtRNA_FT (#186715) and hCtRNA_VT (#186716).   Fig. 2: ...scalable and efficient in plasmid and viral vectors. In applications when repetitive tRNA sequences must be avoided...
  3. Plasmids 101: Repressible Promoters

    Type
    Blog Post
    ...to be expressed. These permit exquisite control of gene expression and tracing of gene expression across... basal expression. Co-expression of repressor QS along with QF leads to intermediate expression from QUAS...transgene permits directed expression of that gene in cells that also express GAL4. Usage of this system...UAS to examine the expression of reporter genes, or to combine reporter expression from one promoter with...basal state, and co-expression of the inducer QF can increase QUAS driven expression by ~3,300-fold in ... Shen. “Controlling gene expression with the Q repressible binary expression system in Caenorhabditis ... with transgene or siRNA expression from the other. The Q system Potter et al. from Liqun Luo’s lab developed...
  4. Nanoblades: Tiny CRISPR Ninjas for Genome Editing Difficult Cells

    Type
    Blog Post
    ...and Cas9 expression plasmids. These results are in line with previous research showing that the method of...Addgene.org Check out our comprehensive CRISPR guide Find CRISPR plasmids and resources Learn about viral production...in place of SpCas9. gRNA A gRNA targeting a DNA sequence of interest is expressed in 293T cells and loaded...same guide. Nanoblades also had lower off-target effects when compared to DNA transfection of gRNA and ...infiltrate cells. Options for CRISPR delivery include plasmid transfection, RNP electroporation, and viral transduction...Nanoblades, different viral envelope protein(s) are expressed to pseudotype Nanoblades. The team found that ...types they tested. Interested in using Nanoblades? Plasmids are available from Addgene. Genome editing primary...
  5. Degrading DNA with Cascade-Cas3

    Type
    Blog Post
    ...Liao, M., & Ke, A. (2018). Structure basis for RNA-guided DNA degradation by Cascade and Cas3. Science,...Additional resources on Addgene.org CRISPR guide Cascade-Cas3 Plasmid collection ...its partner in crime, Cascade. Find Cascade-Cas3 plasmids in Addgene's collection! A “complex” system Cas3...challenging. It can be difficult to ensure comparable expression of all components of Cascade for maximum efficiency... Various labs have designed all-in-one Cascade plasmids — such as the Tomoji Mashimo lab and the Tilmann...efficiency of these systems, though consistent expression can still be a challenge. A multitasking Cas ...a cost — the previously mentioned issues with expressing all Cascade components can make Cas9 easier to...
  6. Harnessing Bacterial Toxins for Allelic Exchange

    Type
    Blog Post
    ...Tight control of toxin expression is absolutely necessary, because leaky expression of toxin could select...Central PMCID: PMC4862005. Jiang, Wenyan, et al. "RNA-guided editing of bacterial genomes using CRISPR-Cas...Improvement of pCVD442, a suicide plasmid for gene allele exchange in bacteria." Plasmid 51.3 (2004): 246-255. PubMed...introduce a mutation in the chromosome is to disrupt expression of a gene with an antibiotic resistance cassette...in the chromosome, sometimes interfering with expression of surrounding genes. However, there are ways...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...
  7. Starter Guide to induced Pluripotent Stem Cells (iPSCs) Part 2:  Reprogramming and Transdifferentiation

    Type
    Blog Post
    ... [6], plasmid electroporation (episomal) [7, 8] and mRNA transfection [9]. Many of the plasmids used for...four reprogramming factors can be delivered and expressed in multiple somatic cells via various methods....Neurons [32, 33, 34] You can find a variety of plasmids for differentiation here. Transdifferentiation...transdifferentiated in vivo to pancreatic β-like-cells with the expression of pancreatic and duodenal homoeobox gene1 (PDX1...transdifferentiation is usually carried out by expressing transcription factors specific to the lineage.... Davis, R.L., H. Weintraub, and A.B. Lassar, Expression of a single transfected cDNA converts fibroblasts...Pancreatic and duodenal homeobox gene 1 induces expression of insulin genes in liver and ameliorates streptozotocin-induced...
  8. Western Blot

    Type
    Protocol
    ...may also like... Antibody Plasmid Collection Antibody Blog Posts Antibody Guide Immunocytochemistry Protocol...include a positive control sample that you know expresses the protein, such as cells transfected with the...interest, and a negative control sample that does not express the protein of interest....to support reproducibility in science. General Guidelines Acrylamide percentage varies in SDS-PAGE gels...6 cells for 5 min at 100 x g . Gently remove supernatant. Resuspend cell pellet in 1 mL of 1X PBS and ...Centrifuge for 5 min at 100 x g . Carefully remove supernatant. Resuspend cell pellet in appropriate volume ... for 15 min at 14,000 x g at 4 °C . Transfer supernatant to a clean microcentrifuge tube. Use the lysate...
  9. Antibodies 101: Affinity Reagents

    Type
    Blog Post
    ...enough to be expressed in bacterial and other cell systems. Since the majority of these alternative reagents...Antibody GuideRecombinant antibodies available from AddgeneBrowse our recombinant antibody plasmid collection...I love Addgene's new Antibody Guide and not just because I helped create it. But while antibodies, as...could take the needed steps to continue where the guide left off - namely, a blog post devoted to the other... of disulfide bonds, monobodies can be easily expressed in transfected eukaryotic cells, allowing for ...Aptamers are not proteins at all. These high-affinity RNA molecules can bind to a wide variety of targets, ...Resources Additional resources on the Addgene blog Plasmids 101: Aptamer FluorophoresAntibodies 101: scFVs...
  10. GPCRs: How Do They Work and How Do We Study Them?

    Type
    Blog Post
    ...ligand-bound GPCRs of interest. The TRUPATH plasmid kit consists of 20 plasmids encoding 14 alpha, 2 beta, and 4 ...inhibition). AAV preps from DREADD plasmids allow you to easily express a DREADD receptor in a specific ...quick guide to chemogenetics Resources on Addgene.org Check out Addgene's chemogenetics guide Find chemogenetics...response? Let’s take a look at a few examples with plasmids deposited at Addgene.  PRESTO-TANGO: The ligands...resource called PRESTO-TANGO (parallel receptorome expression and screening via transcriptional output - TANGO...factor from the receptor, which can then activate expression of a luciferase reporter in the nucleus. The ...Bryan Roth’s lab also assembled a collection of plasmids to elucidate the role of 14 of the 16 non-visual...
  11. What's New in CRISPR - September 2019

    Type
    Blog Post
    ...Read our CRISPR guide Find CRISPR plasmids by function Find recently deposited plasmids ...CRISPR plasmids available at Addgene. We will still periodically focus on specific CRISPR plasmid tools...an extensive RNA scaffold and a domain needed for DNA unwinding. They’ve deposited plasmids for active ...for E. coli and human expression. Read the paper in Nature Find the CasX plasmids Drug inducible transcriptional...vector sequence. Homology arms that flank the donor plasmid cargo are complementary to either side of the double-stranded... Acids Research Find the drug inducible Cas9 plasmids E. coli genome-wide inhibition library In the...targeting requires two sgRNAS: one that targets the knock-in site and a universal sgRNA that targets the donor...
  12. Bikard Lab - CRISPR Repression Collection

    Type
    Collection
    ... the RNA polymerase, thus strongly decreasing the expression level. Mismatches between the guide RNA and...range of expression levels. This collection comprises 20 plasmids, each carrying two CRISPR guides. The first... can be controlled using a plasmid‐borne CRISPR array coding for guide RNAs (diamonds) interspaced with... CRISPR Repression Plasmids You may also like... CRISPR Guide CRISPR Protocols gRNA Design Tools CRISPR...From the Bikard Lab, CRISPR plasmid collection for modulating expression levels of two targets independently...arrays to modulate the expression levels of two targets independently. The RNA-programmed DNA-binding ...nucleotides. Together, these plasmids allow to explore the whole range of expression levels for these two reporters...
  13. Lentiviral Vector Uses and Overview

    Type
    Blog Post
    ...consisted of three plasmids: the packaging, envelope, and transfer plasmids. The packaging plasmid carried a mutated... packaging and envelope plasmids are two of Addgene’s most requested plasmids! Lentiviral particles with... make stable transgene-expressing or knockout cell lines. Many CRISPR plasmids are designed for lentiviral... of Addgene’s most requested plasmids are used with lentiviral expression systems. If you’re new to the...lentivirus, check out our lentiviral plasmid and biosafety guides before beginning your experiment. Let...into the genome, permitting long-term transgene expression, but they could only infect actively dividing...non-dividing cells, but without sustained transgene expression. To design a viral vector system that could do...
  14. Fujii Lab CRISPR Plasmids

    Type
    Collection
    ...iChIP plasmid, expresses 3xFNLDD in mammalian cells 48972 3xFNLDD/pMXs-IG iChIP plasmid, expresses 3xFNLDD...interest 61079 gRNA-hIRF-1 #12 Expresses a guide RNA (gRNA) to target human IRF-1 promoter 61080 gRNA-hIRF-1 ...regions of interest. 98134 hIRF-1 gRNA #409 (Sa) Expresses a guide RNA (gRNA) to target human IRF-1 promoter...Sa-Cas9 system. 105283 hIRF-1 gRNA #351 (Sa) Expresses a guide RNA (gRNA) to target human IRF-1 promoter...1 #12/pSIR Expresses a guide RNA (gRNA) to target human IRF-1 promoter 62190 3xFLAG-dCas9/pTEF1p-CYC1t...scheme Fujii Lab Plasmids Individual plasmids can be ordered via the links below: ID Plasmid Description 47948...pMD20 iChIP plasmid, LexA-binding elements 48874 3xFNLDD/pCMV-7.1 iChIP plasmid, expresses 3xFNLDD in ...
  15. New Optimized Genome-wide CRISPRko, CRISPRi, and CRISPRa Libraries

    Type
    Blog Post
    ...domain. These mutations result in an inactive RNA-guided DNA binding protein (dCas9). dCas9 is then tethered...et al., 2014). The sgRNA or tracrRNA sequences can also be modified to include RNA domains that recruit...Sanson et al., 2018) . This tracrRNA was combined with the sgRNA expression vector allowing the screen ...CRISPRa) to regulate gene expression. Some CRISPR libraries contain many sgRNAs per gene to increase confidence...Calabrese: human CRISPRa sgRNA library In addition to inhibiting gene expression, dCas9 can also be used... that consists of inactive Cas9-VP64, a sgRNA with two MS2 RNA aptamers, and the  MS2-P65-HSF1 helper ...screens can help reveal the function of lowly expressed genes or genes that are more drastically affected...
  16. Adenoviral Vector Production and Troubleshooting

    Type
    Blog Post
    ...recombinant adenoviral plasmid construct, please see Addgene’s Adenoviral Guide webpage, and references...Resources on Addgene.org Find Adenovirus Plasmids Adenovirus Guide Page  ...death of transduced cells and loss of transgene expression (Interestingly, the strong immunogenicity of ...capacity is limited to 8.2 kb, and in vivo transgene expression ceases relatively quickly due to immune response... capacity (up to 36 kb!), long-term transgene expression and negligible toxicity. However, their production...down into 5 key steps: Construction of the rAdV plasmid (~1 week): The AdEasyTM system is the most popular...adenoviral vector constructs. It consists of 2 plasmids: a shuttle vector (in which the transgene of interest...
  17. CRISPR Guide

    Type
    Collection
    ...Science Guides CRISPR Guide CRISPR Guide Jump To: CRISPR Guide Overview CRISPR Basics Small Edits Large...that target RNA instead of DNA enables tracking of RNA in live cells, including orthogonal RNA/DNA labeling...) and editing (B) with Cas13 Browse Plasmids: RNA Targeting , RNA Editing Degrading DNA with Cas3 Rather...Repurposing CRISPR as an RNA-Guided platform for Sequence-Specific control of gene expression. Cell . 152 (5),...components: a guide RNA ( gRNA or sgRNA ) and a CRISPR-associated endonuclease (Cas enzyme). The gRNA is a short...conversions using a prime editing guide RNA ( pegRNA ). Like sgRNA, pegRNA directs the nickase to the target...delivering multiple gRNAs using a single plasmid ensures that all gRNAs will be expressed in the same cell...
  18. Jaenisch Lab CRISPR Plasmids

    Type
    Collection
    ...Activator Expression Plasmids ID Plasmid 48223 pAC91-pmax-dCas9VP64 : dCas9VP64 on pmax expression vector...containing the sgRNA expressing fragment produced by PCR), or expressed from a single dual-expression vector ... Plasmid 48236 pAC2-dual-dCas9VP48-sgExpression : Dual expression construct expressing both dCas9VP48 ...single guide RNA (sgRNA). While the dCas9 protein provides the transactivation activity, the sgRNA component...dual-dCas9VP160-sgExpression : Dual expression construct expressing both dCas9VP64 and sgRNA from separate...CRISPR Plasmids Available from Addgene You may also like... CRISPR Guide CRISPR Protocols gRNA Design ...Individual plasmids can be ordered via the links below: Table 1. dCas9 Activators sgRNA Dual Expression ID Plasmid...
  19. Qi Lab CRISPR Page

    Type
    Collection
    ...BFP fusion expression plasmid 44248 pgRNA-humanized A customizable gRNA expression plasmid for use with...bacterial Cas9 expression plasmid 44250 pwtCas9-bacteria A wild-type Cas9 expression plasmid for use editing... epeats) pathway, as an RNA-guided DNA binding platform, to repress expression of arbitrary genes in bacteria...fluorescent genes. These plasmids are described in: Repurposing CRISPR as an RNA-Guided Platform for Sequence-Specific...resistance. The second plasmid ( pgRNA_bacteria ) contains a constitutive sgRNA expression cassette on a ColE1...bacterial genomes 44251 pgRNA-bacteria A customizable gRNA expression plasmid for use with the bacterial... CRISPR Qi Lab CRISPR Plasmids Qi Labs CRISPR Plasmids Available...
  20. Making CRISPR Plasmids Using Fragmid

    Type
    Blog Post
    ...resources from Addgene Plasmids 101: Modular Cloning Addgene's CRISPR Guide Plasmids 101: Golden Gate Cloning...restriction digest, and then plasmid sequencing if you can. To quote Doench, “Whole plasmid sequencing is just ...correctly banded clones for plasmid sequencing and found 98% of the plasmids were perfectly correct. Because...pRDA_757 (Piggybac; constitutive expression) Mammalian Plasmid pRDA_791 (contains only orio and...the assembled plasmid. It shows you each component, with the ID of the component plasmid, component name...the component plasmids on the Addgene website. Step 4: Naming your assembled plasmid and generating...structure takes a lot of the design work out of the plasmid creation process. Each module of Fragmid represents...
Showing: 101 - 120 of 277 results