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We narrowed to 840 results for: Met

Showing: 781 - 800 of 840 results
  1. March for Science

    Type
    Blog Post
    ...scientists to be more involved in their communities (something already encouraged by “Broader Impacts” requirements...
  2. Antibody Guide

    Type
    Guide
    ...Overview Quantification Methods Capture Methods Visualization Methods Cell Sorting Methods Multiplex Assays ...Antibody Applications - Cell Sorting Methods Flow cytometry Flow cytometry, used commonly in immunology, allows... through the indirect detection method. In the direct detection method, the signaling molecule is conjugated...Antibody Applications - Quantification Methods Quantification methods, such as western blots or ELISAs, are...output measured. This method can be performed using the indirect detection method via a conjugated secondary...sample. Controls for quantification methods Quantification methods should be run with: a positive control...included. Antibody Applications - Capture Methods Capture methods such as immunoprecipitation (IP) and chromatin...
  3. Plan Your Experiment

    Type
    Guide
    ...delivery The first of these methods is RNA delivery of Cas and gRNA. This method involves using in vitro ...endosomal approach. Similar to the mRNA method described above, this method is also transient, as the RNPs will... edit using DNA-based methods like sequencing or digital PCR , RNA-based methods like qPCR , and/or protein-based...protein-based methods like a Western blot . Validation Methods There are several common ways to verify...cells. The system may be delivered using viral methods, as DNA or mRNA encoding the Cas enzyme and gRNA...Delivery Using Plasmids The most straightforward method to deliver a CRISPR system into mammalian cells... efficiently transfect. However, note that this method is most useful for cell lines that you can transfect...
  4. CRISPR Guide

    Type
    Guide
    ...toxins, cell viability, and tumor metastasis. One of the most popular methods for conducting genome-wide screens...activation through cytosine demethylation DNMT3A — repression through cytosine methylation MQ1 — repression through... to conventional methods for genomic purification, CRISPR-based purification methods are more straightforward... currently no defined measure of fidelity, so sometimes they will be referred to as increased fidelity...Cas9’s proofreading capabilities. No matter the method, increased fidelity enzymes lead to less off-target... editing is a “search and replace” gene editing method in which Moloney Murine Leukemia Virus Reverse ...Although lentiviral libraries are the most popular method for CRISPR screening, they are not suitable for...
  5. Gibson Assembly Protocol

    Type
    Protocol
    ...effective method for the assembly of plasmids, and molecular biologists now use this method extensively...hundred kilobases. Nature Methods , 6(5), 343–345. https://doi.org/10.1038/nmeth.1318 (Link opens in a new...mitochondrial genome. Nature Methods , 7(11), 901–903. https://doi.org/10.1038/nmeth.1515 (Link opens in a new... Assembly Cloning You may also like... Cloning Methods Empty Backbone Guide Molecular Biology Protocols...the J. Craig Venter Institute developed a novel method for the easy assembly of multiple linear DNA fragments...intervening sequence between two PCR products, one method is to “stitch” together several oligos. This technique...
  6. Molecular Cloning Techniques

    Type
    Guide
    ...cloning techniques, focusing on seven common cloning methods....replication and protein expression. There are many methods that allow you to move around pieces of DNA. Oftentimes...Check out our blog on choosing the right cloning method for your research project . This guide highlights...highlights several of the most popular cloning methods for the creation of recombinant DNA. Restriction Enzyme...endonuclease) molecular cloning is the "classic" cloning method, and remains one of the most popular today. Restriction...can be time-consuming compared to other cloning methods. Read more in our Restriction Cloning blog post...Gateway cloning is a recombination-based cloning method. During Gateway, moving a piece of DNA from one...
  7. Lentiviral Vector Guide

    Type
    Guide
    ...multiplexable method for genome-wide mapping of lentiviral integration sites. Molecular Therapy — Methods & Clinical...plasmid can be done with most standard cloning methods, including restriction enzyme, Gibson Assembly,...or may only be compatible with certain cloning methods (such as a Gateway destination vector), so be sure...your chosen plasmid is compatible with cloning methods available in your lab. When cloning your plasmids...HEK293T cells using your preferred transfection method. The HEK293T cells will produce the viral vectors...screens, lentiviral vectors are a preferred delivery method when conducting cellular barcoding experiments....lentiviral vectors, they have been seen as an effective method for in vivo gene delivery. Lentiviral vectors are...
  8. Adeno-associated virus (AAV) Guide

    Type
    Guide
    ...viral replication (E4, E2a and VA). These are sometimes combined within the packaging plasmid. For a summary...plasmid can be done with most standard cloning methods, including restriction enzyme, Gibson Assembly,...or may only be compatible with certain cloning methods (such as a Gateway destination vector), so be sure...your chosen plasmid is compatible with cloning methods available in your lab. When cloning your plasmids...mutations or insertions in the Cap region. Several methods have been developed and successfully employed to...and a systemic AAV capsid could avoid invasive methods such as intracranial injection. Systemic capsids...Cas9 elements, making it one of the most common methods for in vivo CRISPR-based genome editing. Packaging...
  9. DNA Quantification

    Type
    Protocol
    ...purity. This can be done with a spectrophotometer. A spectrophotometer uses the absorbance/transmission... instructions for the spectrophotometer specific to your lab. Spectrophotometer Tips Before measuring ...labs have a NanoDrop, which is a very small spectrophotometer that can accurately read DNA concentration...measuring any samples, be sure to ‘blank’ the spectrophotometer using the solution the DNA is resuspended in, ...NanoDrop. It is a good idea to re-zero any spectrophotometer between samples if they are expected to vary...
  10. Affinity Purification of Recombinant Antibodies with Protein A or Protein G

    Type
    Protocol
    ... we list the specific equipment, reagents, and methods that we use in our lab at Addgene. Equipment and...compatible with 50 mL conical tubes NanoDrop spectrophotometer 37 °C, 5% CO 2 incubator with shaking platform...concentration of each fraction on the NanoDrop Spectrophotometer using the A280 IgG setting. Combine all eluates...concentration of the pooled sample on the NanoDrop Spectrophotometer using the A280 IgG setting. If the concentration...Determine antibody concentration on the NanoDrop Spectrophotometer. Dilute antibody to 1 mg/mL with PBS if needed...to check the concentration on the NanoDrop Spectrophotometer to see if the sample has reached the desired...Periodically check the concentration on the NanoDrop Spectrophotometer to see if the sample has reached the desired...
  11. Immunocytochemistry

    Type
    Protocol
    ...be the best fixation method for all. Alternative fixation methods such as methanol or acetone may be better... target protein using the formaldehyde fixation method. The protocol may need to be optimized for different... we list the specific equipment, reagents, and methods that we use in our lab at Addgene. Equipment and.... Tips and Troubleshooting The optimal fixation method will vary depending on the sample type and the ...interest. You may need to try a variety of fixation methods to find the best conditions for your target. The...
  12. Gamma-Retroviral Vector Guide

    Type
    Guide
    ...plasmid can be done with most standard cloning methods, including restriction enzyme, Gibson Assembly,...or may only be compatible with certain cloning methods (such as a Gateway destination vector), so be sure...your chosen plasmid is compatible with cloning methods available in your lab. When cloning your plasmids...cells (Figure 3A), similar to lentiviral packaging methods . The three plasmids described above (envelope,...these genes on separate plasmids ( in trans ). This method, therefore, reduces the number of plasmids that...pseudotyping. Figure 3: Gamma-retroviral vector packaging methods. Created with BioRender.com. Viral Vector Integration...protocol is for lentiviral vectors, but a similar method can be applied when using gamma-retroviral vectors...
  13. Adenovirus Guide

    Type
    Guide
    ...most popular choice due to their well-established methods, relative simplicity of production, and higher ...from the HV in final viral preparations. Several methods to avoid HV contamination have been developed, ...plasmid can be done with most standard cloning methods, including restriction enzyme, Gibson Assembly,...or may only be compatible with certain cloning methods (such as a Gateway destination vector), so be sure...your chosen plasmid is compatible with cloning methods available in your lab. When cloning your plasmids... by Bert Vogelstein’s lab , is the most popular method for creating first-generation rAdV vectors, which...supercoiled pAdEasy and the shuttle plasmid, but this method results in a higher background of non-recombinant...
  14. CRISPR/Cas9 FAQs Answered!

    Type
    Blog Post
    ...efficient guide (most guides would work, but they sometimes have different efficiency). And it is best if ...
  15. Modular Cloning Guide

    Type
    Guide
    ...functional plasmids. It is a powerful and very efficient method for creating many plasmids from different combinations...common set of components (Weber et al., 2011). This method, based on Golden Gate plasmid assembly, exploits...building synthetic genetic circuits, engineering metabolic pathways, assembling gene-editing tools, and more...editing, functional genomics, and more complex metabolic engineering and synthetic biology, compatible ...ubiquitination cascades of different organisms in E. coli . MetClo DNA Assembly Kit Bacterial Expression Christopher... for assembling large DNA fragments based on methylation-switching. 4G-Cloning Plasmid Kit Bacterial Expression...cellular circuits using Golden Gate-based cloning methods for use in mammalian cells. These can be used with...
  16. Isolating a Monoclonal Cell Population by Limiting Dilution

    Type
    Protocol
    ...likely to retain stable transgene expression. Other methods of generating a monoclonal cell line include single-cell...controller Hazardous waste container Microscope Hemocytometer or other cell counter Reagents Polyclonal stable... growth of cells in individual cultures. Other methods for enhancing single cell growth, such as using...concentration in this homogenized cell solution using a hemocytometer or other cell counter. Pro-Tip Prepare a relatively...well plate. Sample Calculation First, use a hemocytometer to quantitate the homogenized cell solution....screening. Sanjana NE, Shalem O, Zhang F. Nature Methods. 2014 Aug;11(8):783-4. (Link opens in a new window...
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