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Showing: 121 - 140 of 479 results
  1. Three Tips for Preventing Viral Plasmid Recombination in Your Samples

    Type
    Blog Post
    Published
    Sept. 14, 2021, 1:15 p.m.
    ...affect viral vectors (LTRs and ITRs), plasmids with multiple polyA sites, and other plasmids that contain repeating...rich media can improve growth and DNA yield. Test multiple, small colonies After streaking LB agar plates...cultures contain the recombined vector backbone. Test multiple colonies before saving a glycerol stock to ensure...try re-streaking for single colonies and testing multiple preps. In some cases, we suggest gel extraction...
  2. CasPEDIA: A Functional Classification of Cas Enzymes

    Type
    Blog Post
    Published
    Jan. 25, 2024, 2:15 p.m.
    ...Cis/trans activity, PAM requirement, gRNA, and multiplex ability Experimental guidelines and applications...you need more nitty-gritty details — how can I multiplex this enzyme? What other RNA components are required.... For each enzyme, it will also show you how multiplexed arrays would be designed, if that’s your end ...details to refine your search (trans activity, multiplex ability, gRNA design, etc.). With this feature...
  3. REPLACR Mutagenesis: Replacing In Vitro Recombination Methods

    Type
    Blog Post
    Published
    Feb. 10, 2016, 3:30 p.m.
    ...primer known as a megaprimer. Piecing together multiple PCR products using sequence homology is also common... Cloning, and SLIC can all be used to assemble multiple fragments, but these methods can be expensive ...is more expensive than gBlock synthesis, and multifragment assembly methods are preferred. No such restriction...other methods, such “BAC shaving” would require multiple steps. One potential pitfall of REPLACR-mutagenesis...
  4. Delivery Methods for Generating iPSCs

    Type
    Blog Post
    Published
    April 17, 2018, 1:37 p.m.
    ...vector-free cells Limited genomic integration Multiple transfections required Need to sequence to verify...-Free High High Transgene-free and vector-free Multiple transfections required Protein Delivery DNA-...kb, so either a single polycistronic vector or multiple single-gene vectors can be used to package reprogramming...to use a polycistronic cassette that expresses multiple reprogramming factors driven by one promoter. ...plasmid integration. Another challenge is that multiple transfection makes it difficult to control the...
  5. CRISPR/Cas9 FAQs Answered!

    Type
    Blog Post
    Published
    March 13, 2014, 4:08 p.m.
    ...for multiplexed targeting with Zhang lab plasmids? A6: For multiplexing CRISPR to target multiple genome...Jiang, W., Marraffini, L. A., & Zhang, F. (2013). Multiplex genome engineering using CRISPR/CAS systems. Science...-Step generation of mice carrying mutations in multiple genes by CRISPR/CAS-Mediated Genome Engineering...
  6. Viral Vectors 101: An Introduction to AAV

    Type
    Blog Post
    Published
    May 30, 2023, 1:15 p.m.
    ...interested in expressing multiple small genes, you can design single rAAV vectors with multiple genes packaged ...interested in heftier genes, you can coinfect with multiple viruses to express genes or gene sets over 4.7... Multiple Authors...
  7. Antibodies 101: Selecting the Right Antibody

    Type
    Blog Post
    Published
    March 15, 2022, 1:15 p.m.
    ...chance that the antibody could meet your needs.    Multiplex experiments Finally, consider whether you will... in the experiment. If you are planning to use multiple antibodies in a single experiment then you will...antibodies are sold under different names through multiple vendors, so look at epitope target, source, and...strategies that compare the staining patterns of multiple antibodies against the same target; tagged protein...
  8. Working with Nuclear Receptors

    Type
    Blog Post
    Published
    July 15, 2014, 4:03 p.m.
    ...currently available or being developed to treat a multitude of therapeutic indices, including hypertension...coherent manner. Because coregulators exist as multiprotein complexes, a member of a single coactivator ...suggests that coactivators may be integrators of multiple cell signaling systems. Activation of membrane...expression patterns of nuclear receptors across multiple different tissues in normal and disease states...
  9. Overcoming the Challenges of Lentiviral Production

    Type
    Blog Post
    Published
    Aug. 7, 2018, 12:31 p.m.
    ...dish can be easily applied to multiple dishes, remember that handling multiple dishes will take longer and...packaging systems divide the viral elements among multiple plasmids. Second generation packaging systems ...transfer gene. By dividing the viral elements across multiple plasmids, the risk of recombination and consequently...
  10. Tips for Titering Your Lentiviral Preps

    Type
    Blog Post
    Published
    March 15, 2016, 2:30 p.m.
    ...integrated into its genome and a cell that has had multiple integration events. In addition, promoter choice... cell’s genome. This approach can discriminate multiple integration events, reducing the possibility of...typically requires transducing with a limiting multiplicity of infection (MOI) to ensure only one copy integrates...lentiviral vector titration and in the use of multiplicity of infection (MOI) for predicting gene transfer...
  11. PCR Applications for Copy Number Variation Assays

    Type
    Blog Post
    Published
    April 26, 2022, 1:15 p.m.
    ...It is a well known fact if a multicopy variant of a gene exists, there must be assays that researchers...possible and set using the variance seen within multiple runs of the standard curve. Signaling molecules...different markers, it can also be used to run multiplex assays, allowing the reference sequence and the...determination of amplification of Plasmodium falciparum multidrug resistance-1 gene (pfmdr1). J Parasitol. 2011 ...
  12. A Guide to Starting Your Own Journal Club

    Type
    Blog Post
    Published
    Feb. 6, 2020, 3 p.m.
    ... it may be useful to adapt the second version (multiple presenter, figure by figure) if the primary purpose...begin building a high level understanding across multiple teams or to stay abreast of current trends in ...more people. The feedback could be solicited via multiple avenues including casual request via email, in...we rely on polls and surveys. A mix of closed (multiple choice/binary) and open questions is helpful to...
  13. Tips from the Repository Trenches: Using Barcodes to Track Samples

    Type
    Blog Post
    Published
    Oct. 6, 2015, 2:30 p.m.
    ...in freezers that may be shared with multiple people or even multiple labs. Careful tracking prevents us... These barcodes additionally allow us to store multiple types of tube for each plasmid we have at Addgene...detail about that location as possible. Are there multiple freezers that the samples can be stored in? Different...
  14. Finding nucleic acids with SHERLOCK and DETECTR

    Type
    Blog Post
    Published
    April 16, 2020, 1 p.m.
    ...quantitation without compromising sensitivity. To detect multiple targets in one reaction, Cas enzymes, such as ... Zika and a closely-related virus, Dengue from multiple sample sources. SHERLOCK could also detect low-frequency...Kellner MJ, Joung J, Collins JJ, Zhang F (2018) Multiplexed and portable nucleic acid detection platform ...(C2c2) Learn more about Cas12a (Cpf1) and its multiplex genome editing abilities Resources on Addgene.org...
  15. Plasmids 101: Control Plasmids

    Type
    Blog Post
    Published
    April 9, 2015, 3:29 p.m.
    ... size (aka your n value)" and should come from multiple, independent sources. We'll describe these a bit... of a technical control is the transfection of multiple separate wells (within the same plate) with purified...repeat your whole experiment from start to finish multiple times and on different days. Using our example...additional positive and negative controls, performing multiple replicates, and ultimately getting interpretable...
  16. Antibodies 101: Introduction to Gating in Flow Cytometry

    Type
    Blog Post
    Published
    April 4, 2024, 1:15 p.m.
    ...electric potential that can be applied to the photomultiplier inside the cytometer to increase the electric...gate on single cells and exclude any events where multiple cells were clumped together. (B) Instead of FSC...refined gating strategy, I can, of course, also draw multiple individual gates around the populations of interest...) Instead of a quadrant gate, I am free to use multiple individual gates. Note that in this case, square...
  17. Fluorescent Proteins 101: GFP Fusion Proteins - Making the Right Connection

    Type
    Blog Post
    Published
    April 9, 2019, 1:13 p.m.
    ...fluorescent protein. These were either (i) coded by the multiple cloning site and therefore consist of random amino...#85045). We often use restriction enzymes in the multiple cloning site for generating fusions. For the POI-fluorescent... acids (PVAT, when we use the AgeI site in the multiple cloning site) is sufficient. For the fluorescent... may guide design, it is advisable to generate multiple constructs with different insertions, since it...
  18. CRISPR 101: Engineering the Plant Genome Using CRISPR/Cas9

    Type
    Blog Post
    Published
    Oct. 11, 2016, 2:30 p.m.
    ...cloning required. As with other model systems, multiple gRNAs can be expressed to modify several genomic...genomic loci at once (get more information on multiplexing gRNAs here). Cas9 is commonly tagged with a nuclear...Zhang Y, Qi Y (2015) A CRISPR/Cas9 Toolbox for Multiplexed Plant Genome Editing and Transcriptional Regulation...Resources on the Addgene Blog Read Up on CRISPR Multiplexing Tools Validate Your Genome Edit Design Your ...
  19. Treating Muscular Dystrophy with CRISPR Gene Editing

    Type
    Blog Post
    Published
    Jan. 26, 2016, 3:30 p.m.
    ...hotspot for dystrophin, exons 45-55, there are multiple common deletions that maintain the protein’s reading...skipping? For such a therapy to be successful, multiple requirements must be met. First, CRISPR would ...dystrophy. gRNAs can be designed to flank a single or multiple exons that, when deleted through NHEJ, will restore...Thakore PI, Majoros WH, Reddy TE, Gersbach CA. Multiplex CRISPR/Cas9-based genome editing for correction...
  20. Troubleshooting and Optimizing a Western Blot

    Type
    Blog Post
    Published
    Sept. 17, 2024, 1:15 p.m.
    ..., you’ll run the same protein concentration in multiple lanes and cut up the membrane to treat each lane...are a little trickier than gels and may require multiple runs to optimize or troubleshoot.   Before you...protein gradient, compare your diluted samples. If multiple dilutions are showing the same signal (Figure ...also consider using polyclonal or recombinant multiclonal antibodies to increase overall signal from the...antibody binding sites Polyclonal or recombinant multiclonal antibodies Protein not properly lysed Different...
Showing: 121 - 140 of 479 results