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We narrowed to 840 results for: Met

Showing: 301 - 320 of 840 results
  1. Giving gRNAs a Facelift - Synthetic and Beyond

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    ... of the most common of these is 2’-O-methylation, where a methyl group is added to the 2’ hydroxyl group...protect the RNA from degradation, several simple methods have been employed which modify the sugar or phosphate...together, for example phosphorothioates with 2’-O-methyl modifications, proved more stability than just ...similar advantages, bridged nucleic acids with N-methyl substitutions are slightly more efficient and less...
  2. Hot Plasmids - May 2022

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    ...expression using Cre-mediated AAV Targeted Evolution method (M-CREATE) dCas9-SSAP with reduced error rate for...expression using Cre-mediated AAV Targeted Evolution method (M-CREATE) by: Brian O'Neill  The Viviana Gradinaru...version of the Cre-mediated AAV Targeted Evolution method (M-CREATE), in which one applies both positive ... by: Lucie Wilson Le Cong’s lab has developed a method using dCas9-SSAP to knock-in long sequences with...to 20%, comparable to commonly used CRISPR/Cas9 methods for large inserts. However, this system has a much...
  3. AAV Q&A with Tim Miles

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    Blog Post
    ...in sample treatment across methods can affect reported titer by either method so to ensure equal animal...vector, split intein approach.   Q3: What’s the best method for titering AAV? Is there a difference in titer...traditionally used qPCR (protocol link). We have found this method to be reliable and reproducible. However, we do...animal dosing, we advise that users keep titering method consistent across samples within a project. Targeting...
  4. Viral Vectors 101: Inverted Terminal Repeats

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    ...with biorender.com. ITR structure  WT ITRs are symmetrical 145-nucleotide sequences that flank the ends ...not properly assemble, but these sequences can sometimes be removed to improve vector stability and sequencing...mutations will go undetected by restriction digest methods.    Resources and references More resources on...the Baculovirus/Sf9 Cells System. Hum Gene Ther Methods, 28(5), 277–289. https://doi.org/10.1089/hgtb.2016.133...Repeats of Adeno-Associated Virus. Hum Gene Ther Methods, 30(6), 206–213. https://doi.org/10.1089/hgtb.2019.276...
  5. Multiplex Genome Editing with CRISPR-Cpf1

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    ...this new Cpf1 multiplexing method, other multiplex CRISPR gene editing methods relied solely on Cas9. Overall...Cas9 Multiplexing Options  Multiplexing Method Delivery Method Advantages Disadvantages References Yamamoto...CRISPR technologies.  It’s a simple and effective method with multiple applications (in vitro, in vivo, ...
  6. Screening for Successful Genome Editing with Digital PCR

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    ...your favourite gene, there are several different methods available. Thankfully, there are many great resources...® or T7E1) for mutation detection. While these methods paved the way for mutation validation, we found...workflow. Digital PCR comparison to other validation methods As mentioned, these assays have several major advantages...human iPS cells without antibiotic selection. Nat Meth 11, 291–293 (2014). PubMed PMID: 24509632. PubMed...Berman, J. R. & Postovit, L.-M. A Digital PCR-Based Method for Efficient and Highly Specific Screening of ...
  7. 3 Challenges in Plant Synthetic Biology

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    Blog Post
    ...not understand, and the complicated and unique metabolic processes of plants are being investigated on ...biochemical pathways involved in central anthocyanin metabolism are well understood. Additional work has also...knockouts to better understand developmental, metabolic, and photosynthetic processes. Often the tools...like a lot of specialized science, these tools sometimes have limited distribution. We hope that will change...more difficult by the fact that transformation methods have also been patented. In order to construct ...
  8. Antibodies 101: Selecting the Right Antibody

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    Blog Post
    ...which may contain more detailed data on the assay methods. You might find that while the website highlights...direct (primary-conjugated) or indirect (secondary) methods. In those cases, remember that a secondary should...anti-tag antibody; and immunoprecipitation-mass spectrometry strategies that isolate an antibody’s immune...complexes and confirm interacting partners by mass spectrometry (Uhlen, 2016). Be sure that the antibody you...) A proposal for validation of antibodies. Nat Methods 13:823–827...
  9. Channelrhodopsins with improved light sensitivity for minimally-invasive optogenetics

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    ...Optogenetics is a neuroscience method that lets you fire neurons with the flick of a light switch. Neurons...channelrhodopsins with high-throughput proteins engineering methods, like directed evolution, because channelrhodopsins...channelrhodopsins are typically evaluated with low-throughput methods such as patch-clamp electrophysiology, a technique... was delivered and activated with non-invasive methods to the neurons in the right secondary motor cortex...engineering enables minimally invasive optogenetics. Nat Methods 16:1176–1184 . https://doi.org/10.1038/s41592-019...
  10. Plasmids 101: Knockout/Knock-In Plasmids

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    ...   Knockout/Knock-in plasmids Gene targeting methods also make it possible to insert, or knock-in, any...chosen promoter responds. You can also use this method to tag an endogenous protein with GFP, as seen ... given locus.   Conditional knockouts The methods and plasmids described in the preceding sections...The future of knockout plasmids Although these methods have been used to create many knockout cell lines...Addgene depositors have developed new CRISPR-based methods for various knock-ins, discussed in our CRISPR ...
  11. Viral Vectors 101: Producing Your rAAV

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    ...your viral vector solution. A variety of titering methods have been developed to determine the titers of ...precision and variability, qPCR is the more widely used method due to the accessibility of instruments in standard... terminal repeat sequences. Human Gene Therapy Methods, 23(1), Article 1. https://doi.org/10.1089/hgtb... of AAV Serotype 1 Vectors. Human Gene Therapy Methods, 28(1), Article 1. https://doi.org/10.1089/hgtb...titers by droplet digital PCR. Human Gene Therapy Methods, 25(2), Article 2. https://doi.org/10.1089/hgtb...
  12. AAV Vector Quality Control: Going the Extra Mile with NGS

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    ...Characterization Methods for Quality Control Testing of Recombinant Adeno-Associated Viruses. In: Methods in Molecular... for the contaminant is Addgene plasmid #44362. Method validation, limitations, and future plans How did...another AAV vector with AAV-68544 to validate our method. We then extracted the DNA and processed the mixed... start, but to determine the sensitivity of our method we wanted to see how low we could go. We prepared...
  13. INTEGRATE: Bacterial Genome Engineering Using CRISPR-Transposons

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    ... for genetic studies (e.g. using mariner), as a method of tagmentation for next-gen sequencing pipelines... insertions are not currently possible, unlike methods involving homologous recombination. Additionally...Additionally, these transposon also exhibit something called target immunity, whereby multiple proximal insertions..., 2020), to multi-copy genomic integration of metabolic cassettes (Zhang et al. 2020); however, the technology...of our CRISPR blog posts Check out other CRISPR methods for bacteria Resources on Addgene.org Visit the...
  14. Don’t FRET: Bimolecular Fluorescence Complementation Makes Visualizing Protein-Protein Interactions Easy

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    ...in large enough quantities (and the correct stoichiometric ratios) to generate useable data. What’s more...easier said than done. Fortunately, a complementary method exists for visualizing protein-protein interactions...? Bimolecular fluorescence complementation is a method for detecting protein-protein interactions that..., 2006). One of the first BiFC studies used the method to interrogate the subcellular localization of ... other BiFC is a convenient, fluorescence-based method for directly visualizing PPIs in cells. The ease...
  15. Getting to Know Expansion Microscopy

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    ...option, but the equipment needed for EM is not something you find in the average cell and molecular biology... continuous lines in pre-expanded samples can sometimes take on a fragmented appearance post-expansion...ultrastructures using expansion microscopy (U-ExM). Nat Methods 16:71–74. https://doi.org/10.1038/s41592-018-0238...fluorescent Fab fragment secondary antibodies. Methodsx 9:101796. https://doi.org/10.1016/j.mex.2022.101796...principles and uses in biological research. Nat Methods 16:33–41. https://doi.org/10.1038/s41592-018-0219...
  16. New Optimized Genome-wide CRISPRko, CRISPRi, and CRISPRa Libraries

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    ...sgRNA-level metrics to assess library performance in viability screens. Based on these metrics the Brunello... CRISPRi libraries with 10 sgRNAs in the sgRNA metrics, confirming again that sgRNA design plays a significant...dCas9 and its RNA directed binding site. These methods include the fusion of an activation domain such...of multiple copies of VP16 termed the “Sun Tag” method (Tanenbaum et al., 2014). The sgRNA or tracrRNA...
  17. Tips for Screening with Yeast Two Hybrid Systems

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    ...Tips below), and by validating leads with other methods. More common are false negatives; up to 75% of ...possibility for problems with one or more of these parameters can lead to a high number of false negatives ...five independent protein interaction detection methods (6). In order to bind DNA and activate a reporter...gene expression in Escherichia coli and yeast. Methods Enzymol. 1983;100:293-308. PubMed PMID: 6312261...Benchmarking of the yeast two-hybrid system. Nature Methods. 2010; 7:667-668. Pubmed PMID: 20805792. 7. Stynen...
  18. CRISPR-based Genome Editing Systems For Editing in E. coli

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    ...coli B and W strains. The optimized plasmid curing method was much simpler and took only ~32 hours instead...serve to interrupt genes (or gene clusters) in metabolic engineering. So far, we’ve used the MUCICAT system...when compared to the industrial strain. In our metabolic engineering case study of N-acetylglucosamine ...Multiple induction systems to choose from. Ready for metabolic engineering with improved cargo dedicated to gene...from our CRISPR topic overview Find other CRISPR methods for bacteria Find all articles about microbiology...
  19. Rett Syndrome: A History of Research and Therapeutic Outlooks

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    ...What is Rett Syndrome? Caused by a mutation in the methyl-CpG binding protein 2 (MECP2) gene, Rett Syndrome...et al., 1999). We now know that MECP2 binds to methylated CpG dinucleotides and CAC trinucleotides during...caused by mutations in X-linked MECP2, encoding methyl-CpG-binding protein 2. Nat Genet 23:185–188 . https.../13810 Amir RE, Zoghbi HY (2000) Rett syndrome: Methyl-CpG-binding protein 2 mutations and phenotype-genotype...after Intracisternal Delivery. Molecular Therapy - Methods & Clinical Development 5:106–115 . https://doi....
  20. Plasmids 101: Plasmid Incompatibility

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    ...It is also worth noting that plasmids can be symmetrically incompatible, meaning that both plasmids are... from the cell with the same probability, or asymmetrical, where one plasmid lost from the cell at a higher... higher rate than the coresident plasmid. Asymmetric plasmid loss occurs for several reasons, including...high copy incompatible plasmids that lead to asymmetrical plasmid loss of the usually large, low copy ...Suzuki K, Yoshida K (2002) A novel plasmid curing method using incompatibility of plant pathogenic Ti plasmids...
Showing: 301 - 320 of 840 results