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  1. Quickest Way to Deposit Plasmids: The Deposit Spreadsheet

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    Blog Post
    ...red in the spreadsheet (Figure 2) and are described in Table 1. Some cells have drop-down options for you...our deposit spreadsheet to complete Step 1. Steps 2 and 3 are usually very easy — our tech transfer team...Filling out and sending the deposit spreadsheet Figure 2: Example of the deposit spreadsheet showing the first... question about what should go into a cell, hover over the cell and instructions will pop up. When you... into the appropriate full and partial sequence cells. *Note: If you believe you need to deposit a collection...
  2. Three Key Considerations for Precise Neuronal Targeting Using AAV Technologies

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    Blog Post
    ...neuroscience see Table 1 from the paper. 2. Manipulate your cell of interest: Cell-type specific expression of molecular...specific cell type. Find some transduction characteristics of select AAV serotypes in Table 2 from the...in their cell bodies. Optical stimulation in a different brain area can then reveal the cells bodies of...with AAV: 1. Getting your viral vector into your cell of interest: AAV tropism and route of administration...transduction, the viral capsid proteins bind to the target cell’s surface proteins and this interaction determines...by restricting expression to genetically defined cell types. Specific transgene expression can be also...different approaches can increase the specificity of cell targeting even further. For example, injecting AAVs...
  3. Fluorescent Tagging of Endogenous Genes with SapTrap

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    Blog Post
    ...digestion of the destination vector with SapI yields 2 sites- the first site accepts the sgRNA target sequence...marker, and connector to be released (Fig. 1, Step 2-3). Since donor plasmids of the same type will produce... gRNA vector that targets the gene of interest, 2) a plasmid to specify the reading frame of the insertion...and function of cellular systems. FPs have been used to track protein localization, cell structure, intracellular...associated with cellular organelles, scientists have been able to study many cellular processes, including...to fluorescently tag markers of cellular structures in mammalian cells. These plasmids use fluorescent...Depletion in Human Cells by Auxin-Inducible Degron Tagging with Short Homology Donors.” Cell Rep.15(1) (2016...
  4. How Dry Ice Affects Viral Vector Sample pH & How to Avoid It

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    Blog Post
    ...pH visible at the sample interface upon thaw (Fig. 2). Before thawing, all the samples were at the control...showed that AAV infectivity was not altered by a short 2-hour exposure to pH as low as 2.5 (Potter et al., ...Methods. 2013 Apr;10(4):278-9. PubMed PMID: 23538862. 2. Potter M, Lins B, Mietzsch M, Heilbronn R, Van Vliet...measure the pH of our samples, we used a solution of cell culture medium, which is buffered and contains the...
  5. Making CRISPR Plasmids Using Fragmid

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    Blog Post
    ... of components, such as your CRISPR enzyme or Pol 2 promoter. The options available in each class, or ...overhang specific to the type of module it is (Pol 2 protomer, Cas protein, ect...). Whatever individual... (KO, CRISPRa, CRISPRi, editing)   Figure 2: Selecting module fragments on the Fragmid website...Drosophilia Plasmid pRDB_051 (for stable fly cell lines; attL and attR sequences for genome integration...Drosophilia Plasmid pRDB_052 (for stable fly cell lines; Hygromycin resistance gene; for genome integration...rapid assessment of emerging CRISPR technologies. Cell Genomics, 4(3), 100519. https://doi.org/10.1016/...
  6. Cpf1 Update: Comparison to Cas9 and NgAgo

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    Blog Post
    ... Class 2 CRISPR-Cas System. Cell. 2015 Sep 23. pii: S0092-8674(15)01200-3. doi: 10.1016/j.cell.2015.09.038...single RNA-guided endonuclease of a class 2 CRISPR-Cas system." Cell (2015). PubMed PMID: 26422227.   ... Find plasmids from this publication at Addgene. 2. Kleinstiver, Benjamin P., et al. "Genome-wide specificities...particularly helpful for targeting non-dividing cells, which are difficult to modify through homology-... Cpf1 orthologs known to be active in mammalian cells, LbCpf1 and AsCpf1. In both reports, on target editing... (RNPs) failed to induce off-target editing in a cell culture model. What we still don't know about Cpf1...reveals specificities of Cpf1 endonucleases in human cells. Nat Biotechnol. 2016 Jun 6. PubMed PMID: 27272384...
  7. CRISPR 101: Anti-CRISPR Proteins Switch Off CRISPR-Cas Systems

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    Blog Post
    ...base pair to another base pair at a specific site. 2. Temporal, spatial, or conditional control of CRISPR...difficult-to-engineer Sulfolobus islandicus rod-shaped virus 2 (Mayo-Muñoz et al., 2018). Only viral particles that...Editing of Sulfolobus islandicus Rod-Shaped Virus 2. Viruses 10:695 . https://doi.org/10.3390/v10120695...Inhibitor of CRISPR-Cas9. Cell 170:1224-1233.e15 . https://doi.org/10.1016/j.cell.2017.07.037 Li C, Psatha...Off-Switches for CRISPR-Cas9. Cell 167:1829-1838.e9 . https://doi.org/10.1016/j.cell.2016.11.017 Shin J, Jiang...concern is that the longer Cas remains active in a cell, the greater chances there are for off-target edits...within the first six hours. When added to human cells six hours after the introduction of Cas9 RNPs, AcrIIA4...
  8. Mapping the 4D nucleome with CRISPR/Cas9

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    Blog Post
    ...resolved loci with physical map distances of 75 and 2 Mbp, with the calculated fluorescent distances correlating...established physical map. In comparing pairs of targets ~2 Mbp apart, they noticed that they could evaluate the...be applicable to studies of cell cycle progression, epigenetics and cellular reactions to external stimuli...Weissman JS, Qi LS, Huang B. Cell. 2013 Dec 19;155(7):1479-91. doi: 10.1016/j.cell.2013.12.001. Pubmed. Find...LS, Weissman JS, Vale RD. Cell. 2014 Oct 23;159(3):635-46. doi: 10.1016/j.cell.2014.09.039. Epub 2014 Oct...labeled Cas9 to label multiple genomic loci in live cells. While other systems can be used to label loci, ...CRISPR/Cas9’s ease of use and ability to label live cells make this system truly advantageous. This new technique...
  9. Antibodies 101: Flow Compensation

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    Blog Post
    ...Figure 2, following compensation. Figure 3: Flow plot for a double positive sample. The cell population.... Let's look at an experimental example in Figure 2. Figure 2A shows the sample prior to compensation.... line with the other populations.   Figure 2: Compensation example based on experimental sample... make it difficult to properly gate your desired cell population. By compensating between fluorescent ... your fluorescent markers are staining for. If a cell is positive for both markers, it will show up as...learning! Ashlyn has a research background in CD8+ T cells and cancer immunotherapies. She is currently a research...
  10. AAV Vector Quality Control: Going the Extra Mile with NGS

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    Blog Post
    ...the mixed sample in our pipeline (see Figure 2, sample 2). When we blindly analyzed AAV-68544, we were...look for potential contaminants. The analysis is a 2-step process using Geneious software: First, the individual...our viral service to continue our mission of accelerating scientific research. To make sure that adeno-associated... check viral transgene expression in transduced cells whenever possible. This post will describe our workflow...fragments of DNA from the helper plasmids or the cell genome can be packaged inside the vectors during...earlier, it is common to find DNA from the packaging cell genome, bacterial genomes, cloning vectors, and ...
Showing: 231 - 240 of 595 results