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Showing: 451 - 460 of 1046 results
  1. Adenoviral Delivery of CRISPR/Cas9 Aims to Expand Genome Editing to Primary Cells

    Type
    Blog Post
    ...encapsulating the genome is majorly composed of three proteins that can be easily modified in order to facilitate...provide a large transgene packaging capacity. For instance, with a packaging capacity of about 6 kb, the ...mechanism to knock out genes as a result of an insertion, a deletion or a frameshift (Ding et al., 2014...attribute this phenomenon to the presence of terminal proteins capping the ends of linear double-stranded AdV...several biological systems. It has been used for instance in inherited disorders such as B-thalassemia, ...steatohepatitis cancer. In deficiencies of plasma proteins where Adv vector delivery is often used, the CRISPR...
  2. Antibodies 101: Flow Compensation

    Type
    Blog Post
    ... depending on your flow cytometer’s setup. For instance, BV510 and AmCyan have almost identical emission...and how do I fix it? When plotting two channels against each other, you should be able to draw perpendicular...single-color APC control, with APC and APC-CY7 plotted against each other. Since it is a single-color control,...After increasing the compensation values for APC against APC-Cy7, the populations are in more of a straight...compensation value of five was applied to APC-Cy7 against APC to correct for this bleed. A compensation value...population is not a double-positive population and is instead due to bleeding, you will see the populations move...
  3. Degrading DNA with Cascade-Cas3

    Type
    Blog Post
    ..., and Cas11. Type I-E Cascades contains all five of these Cas proteins, while type I-C Cascades do not...boundaries defined by anti-CRISPR proteins or running into other proteins naturally bound to the DNA. Cas3...The helicase domain is then activated, and Cas3 begins unraveling the double-stranded DNA (dsDNA) in what...Cas9 vs. The Other Cas(s) CRISPR 101: Anti-CRISPR Proteins Switch Off CRISPR-Cas Systems INTEGRATE: Bacterial...
  4. Common Injection Routes in Mice

    Type
    Blog Post
    ... as “instillation” or “gavage,” as they do not require any punctures. Intratracheal instillation Intratracheal...Skill required: advanced Intranasal instillation Intranasal instillation is very similar to its intratracheal...compounds, as circulation is slower, and more institutional oversight is required. Restraint: mechanical...Intratracheal instillation is used to deliver substances directly to the lungs. It is an advanced technique...
  5. Tips for a 1st time AAV user (by a Rookie AAV user)

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    Blog Post
    ... myself writing AAV production tricks into the margins of my protocol. While these tips weren’t critical...replication uses the host’s polymerase, but requires Rep proteins to process a double-stranded intermediate into...cultures of your AAV transfer plasmid at 30 °C instead of 37 °C and then screen for ITR recombination ...transform AAV transfer plasmids into bacterial strains, like NEB Stable. NEB Stable competent cells lack... should consider performing PEG precipitation. Instead of sonicating the cell pellet, I lyse the cells... Stone and Harshana de Silva Feelixge at Fred Hutchinson Cancer Center for teaching me about AAV production...
  6. Transgenic Organisms, Cas9 Gene Drives, and Appropriate Safeguards

    Type
    Blog Post
    ...Wyss Technology Development Fellow at the Wyss Institute and Harvard Medical School. Scientists making ...drive? The simplest way to make a gene drive is to insert an endonuclease gene within its own cut site1. ...spreads through the wild population and immunizes it against the first drive. Laboratories interested in building...question), why not use them whenever applicable?Against this, consider the cost of an accidental release...accidental release could delay real-world applications against scourges such as malaria and dengue for many years... Holm, D. G. & Suzuki, D. T. Genetic Control of Insect Populations: I. Cage Studies of Chromosome Replacement...
  7. CRISPR 101: Ribonucleoprotein (RNP) Delivery

    Type
    Blog Post
    ...such as PX459, which encodes Cas9 and contains a site for inserting a custom gRNA.  While this methodology...translation delays editing What are Cas9-gRNA ribonucleoproteins? One alternative approach, which avoids many...Schier laboratories. Delivering Cas9-gRNA ribonucleoproteins  An advantage of performing CRISPR experiments...vivo applications. This technique utilizes Cas9 proteins harboring receptor ligands (C in the figure above...., et al. "Cationic lipid-mediated delivery of proteins enables efficient protein-based genome editing...
  8. DNA Purification Without a Kit

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    Blog Post
    ...causes the proteins and genomic DNA to precipitate. Plasmid DNA is free in solution. Proteins and genomic...the same principles: cells are lysed, RNAs and proteins are removed to leave you with DNA. This DNA is...you lyse the bacteria and denature the DNA and proteins in solution. The pH is then lowered using a renaturing...phenol chloroform extraction to remove remaining proteins and RNase. Finally, DNA is precipitated with alcohol...identical to that of commercially available kits but instead of binding DNA to silica columns, it’s bound to...
  9. Save Time with Transient Plant Leaf Transformations

    Type
    Blog Post
    ...these experiments can be done in days to weeks instead of months to years. In the plant sciences “transient...evaluate its function. In nature Agrobacterium contains a plasmid with a T-DNA (transfer-DNA) region. ...pSB166 - pL2_pSB90_tMAS::rLUC-I::pMAS. Fluorescent proteins (FP, e.g. GFP) can be used in many ways. Often...from Agrobacterium. Test different Agrobacterium strains We used the disarmed Agrobacterium tumefaciens ...plants using syringe agroinfiltration." Recombinant proteins from plants. Humana Press, 2009. 41-50. PubMed... 5.02 (2003): 103-115. Hu, Ching-yeh, et al. "Intrinsic GUS-like activities in seed plants." Plant cell...
  10. CRISPR 101: Which Cas9 Do I Choose for My CRISPR Experiment?

    Type
    Blog Post
    ...with higher specificity (eSpCas9 and HypaCas9) instead.  Choosing a Cas9 for site-specific modifications... effects. The SpG variant, discovered by the Kleinstiver group has a PAM of NGN (Walton et al., 2020)....system can be used with a variety of impaired Cas9 proteins (such as SpRY) with altered PAM requirements, ...facilitates recruitment of multiple activation domains to the same genetic locus via co-expression of ...epitope tagged dCas9 and antibody-activator fusion proteins. The Synergistic Activation Mediator complex, ..., R. T., Christie, K. A., Whittaker, M. N. & Kleinstiver, B. P. Unconstrained genome targeting with near-PAMless...
Showing: 451 - 460 of 1046 results