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We narrowed to 849 results for: Met

Showing: 201 - 220 of 849 results

  1. 22 Hot Plasmid Technologies from 2014

    Type
    Blog Post
    ... live cells. Lam et al., Nat Methods 2014 Nov 24. doi: 10.1038/nmeth.3179. Martell et al., Nat Biotechnol...Autophagy 2013 Nov 1;9(11):1852-61. A quicker method for protein inactivation Your protein of interest...advantages of Golden Gate and Multisite Gateway cloning methods developed by the lab of Joachim Wittbrodt might...process provides improvements to classical cloning methods, particularly for complex transgenesis constructs... for certain variants. Klapoetke et al., Nat Methods 2014 Mar 11;(3):338-46. For more information ...system requires less work than using established methods and minimizes some of the technical issues associated...turn RUSH and CRUSH alleles off or on enables this method to rapidly address questions of tissue-specificity...

  2. RaPID Detection of RNA-protein Interactions

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    Blog Post
    ...Sometimes it feels like DNA and protein get all the attention.There are numerous ways to detect DNA-protein...created the RNA-protein interaction detection (RaPID) method. RaPID borrows the E. coli biotin ligase BirA* ...Challenges with existing RNA-protein interaction methods Not in a native context. While native purification...that the protein of interest interacts with RNA. Methods like cross-linking immunoprecipitation (CLIP) identify...interact with an RNA of interest. Current labeling methods are not ideal for in vivo work. BirA* requires ...RaPID identifies RNA-protein interactions. Both methods rely on the promiscuous E. coli biotin ligase, ...RaPID Like other BirA*-based proximity labeling methods, RaPID cannot distinguish between proteins that...

  3. The CRISPR Software Matchmaker: A New Tool for Choosing the Best CRISPR Software for Your Needs

    Type
    Blog Post
    ...some kind of a meta/Frankenstein app? Or perhaps there is a clear winner, is there something that we can ...Examples:  “multiplex design”, “multi-method design”, and “single-method design”. Trends: The most common ...the piñata, their role is to fill the prop with something of value. They are reviewers of content. On the...and its contents spill to the ground. There is something akin to a frenzy as the crowd tries to weigh and...what the reviewers so painstakingly assessed to something a bit more representative of the communities’ ... combination of both empirical and approximate methods. The details of their scoring function can be found... al., 2013, other tools have incorporated new parameters such as the Doench-Root score (by Doench et al...

  4. Addgene's Top Blog Posts from 2020

    Type
    Blog Post
    ...but what about the other methods to quantify DNA? Here we cover five methods to do this. 5. Plasmids ...depositors who quickly shared their reagents: detection methods, synthetic nanobodies, SARS-CoV-2 protein expression...to quantify AAV titers. Get the details on the methods in this blog post. 8. Chromoproteins: Colorful...They've been adapted for many molecular biology methods such as allelic exchange, FRET, and synthetic biology...Quantifying DNA? Here are Five DNA Quantification Methods to Consider by Jennifer Tsang The nanodrop vs...without a kit. 3. SARS-CoV-2/COVID-19 Detection Methods Based on CRISPR/Cas by Shravanti Suresh Guest ... CRISPR at Iowa State University detailed five methods for using CRISPR to detect SARS-CoV-2, including...

  5. Polymerase Chain Reaction Overview and Applications

    Type
    Blog Post
    ...different PCR methods have been developed for different scientific applications. These PCR methods all use ...PCR   Type of PCR Goal of the PCR method Uses of PCR method End point PCR or just PCR Amplify...polymerase chain reaction (PCR). PCR is an in vitro method in which a small amount of DNA can be copied many...extremely useful but is not as quantitative as other methods of PCR. Theoretically scientists should be able...intercalates with any dsDNA and the use of a fluorometer feature built into the thermocycler to measure...droplet PCR, ddPCR  Digital droplet PCR or ddPCR is a method that provides ultrasensitive and absolute nucleotide...Multiplex PCR Multiplex PCR, as the name implies, is a method in which multiple targets can be amplified in a...

  6. Isolating Genomic Regions of Interest with the CRISPR System

    Type
    Blog Post
    ... of this method, isolation of a specific genomic region was an intensive process. One method required ..., the Hodaka Fujii Laboratory first described a method to purify a specific genomic region using the CRISPR...this site (Fujita and Fujii, 2013). They call this method engineered DNA-binding molecule-mediated chromatin...the identification of DNA binding proteins, this method can characterize nucleic acid-nucleic acid interactions...2018). In addition to the "in cell" form of this method, in which an engineered DNA-binding molecule such...purification schemes add additional flavors to this methodology. Using this technique, researchers have begun... combined with next-generation sequencing, this method allows for the recovery of a vast amount of data...

  7. Plasmids 101: Gateway Cloning

    Type
    Blog Post
    ...cloning method and its advantages. An introduction to Gateway technology The Gateway cloning method, developed...entry clone - human KRAS flanked by attL sites.  Method A: recombination of an attB-PCR product or plasmid...to design Gateway plasmids.    Figure 3: Method A to create an entry clone: recombination of an...product with an attP-containing donor vector.   Method B: TOPO-cloning of the desired insert into an attL-entry-TOPO...attL-containing entry vector.   Figure 4: Method B to create an entry clone: TOPO cloning the insert...insert into an attL-containing entry vector.   Method C: Restriction cloning of a restriction enzyme ...attL-containing entry vector.   Figure 5: Method C to create an entry clone: Restriction cloning...

  8. Antibodies 101: Introduction to Immunofluorescence

    Type
    Blog Post
    ...There are multiple methods for fixing samples, each with its own pros and cons. The method you use will depend...To narrow down which specific methods to use, start by reading the methods sections of papers that have...validation of antibodies. Nat Methods 13:823–827. https://doi.org/10.1038/nmeth.3995 Additional Resources ... to assays using non-fluorescent visualization methods. Stay tuned for a future blog post to learn more...will be able to image them in the end. Again, the methods you use will depend on target and sample type. ... fluorescence and to capture your results. The methods used depend on the sample type, microscopy tools...to Performing Immunofluorescence Staining. In: Methods in Molecular Biology. Springer New York, pp 299...

  9. Antibodies 101: Beyond Surface Labeling

    Type
    Blog Post
    ...comes to labeling cells for flow cytometric analysis, the most common method is a cell surface label, where...single-fluorophore-conjugated antibodies. These methods can include labeling markers with multiple proteins... cannot be used, you may want to look at other methods. In the above cases, a good alternative is using... used in western blotting or ELISAs.  A popular method for indirect labeling employs a primary epitope-targeting...the cells that are not labeled. An easy and quick method of negatively selecting your cells of interest .... The main applications of dye stains in flow cytometry are cell proliferation and cell viability. Unlike...(histogram) flow plot (Figure 4b). Through this method, differences in proliferation between cell populations...

  10. Proximity Labeling: A Powerful Tool for Protein Complex Purification and Proteomic Mapping

    Type
    Blog Post
    ... and mass spectrometry approaches. Recently however, scientists have developed newer methods termed proximity-based...antibody based affinity purification/mass spectrometry methods.  BioID: a promiscuous biotin ligase that...purified using streptavidin and separated via flow cytometry.  Find plasmids for EXCELL here! Since BioID was...your favorite protein or RNA motif, give these methods a try.  References:  Branon, Tess C., et al. ...Khavari. "Research Techniques Made Simple: Emerging Methods to Elucidate Protein Interactions through Spatial...electron microscopy and proximity labeling." Nature methods 12.1 (2015): 51. PubMed PMID: 25419960. PubMed ...interaction detection in living cells." Nature methods 15.3 (2018): 207. PubMed PMID: 29400715. PubMed...

  11. Visualizing Protein Turnover In Situ

    Type
    Blog Post
    ...normal neuronal context. In other words, I needed a method for visualizing protein turnover in situ in neurons... come with health risks. Importantly, with this method it is not possible to follow turnover of individual...overexpression may interfere with the system. Another method for studying protein synthesis in situ is the knock-in... FUNCAT Professor Schuman’s technique applies metabolic labeling using a noncanonical amino acid, azidohomoalanine...incorporated into newly synthesized proteins instead of methionine. The labeled proteins can be detected using click-chemistry...originally published by the Söderberg lab in Sweden as a method for the visualization of protein-protein interactions... later visualized by FUNCAT-PLA. Before these methods were combined, it was not possible to visualize...

  12. 28 Hot Plasmid Technologies from 2015

    Type
    Blog Post
    ...pMemoryArray.   Yang et al., Nat Methods 2014 Dec;11(12):1261-6. doi: 10.1038/nmeth.3147. Bioluminescent pH ...al., Nat Methods 2012. Mar 11;9(5):493-8. MXS cloning platform for imaging and flow cytometry applications...Analogous to modular assembly methods, such as BioBricks, the MXS-chaining method uses specified restriction...Addgene. Hochbaum, et al. Nat Methods. 2014. Kralj, et al. Nat Methods. 2011. High-throughput luciferase...Molecular Biology. 2013 August 20th; 14(1). TRICK: A method for visualizing the first round of translation ...and cancer-associated chromosome shattering. This method is based on the recognition of genomic loci by ...designed a new iterative, chaining-based cloning method that simplifies the process of constructing specialized...

  13. Nanoblades: Tiny CRISPR Ninjas for Genome Editing Difficult Cells

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    Blog Post
    ...electroporation, and viral transduction; but these methods aren’t stealthy enough to gain access to some cells...cells (hiPSCs). Nanoblades, a new CRISPR delivery method developed by the Ricci Lab and the T. Ohlmann Lab...Primary cells are often refractory to gene delivery methods, but the researchers was able to edit hiPSCs, mouse...Comparing Nanoblades to Existing CRISPR Delivery Methods When compared head-to-head with existing CRISPR...in line with previous research showing that the method of Cas9 and gRNA delivery can influence the level...zygotes with CRISPR components. However, this sometimes requires intracellular injections into the cytoplasm...demonstrate that Nanoblades are a potential alternative method for generating transgenic mice strains and for ...

  14. Google Forums Round Up: First Impressions of NgAgo

    Type
    Blog Post
    ...lipofectamine-based method to deliver NgAgo ingredients into the cell, the same method used by Gao et al...Both the CRISPR-Cas9 and NgAgo genome engineering methods have their own pros and cons (2). The NgAgo DNA...organisms (3) lies in the versatility of its delivery methods. Researchers can conveniently transfect/inject ...where people write their experiences with the new method and look for advice/tips. Based on the discussions...sections, the first section asked which of the two methods researchers found to be more successful, and the...NgAgo protocols used by respondents (transfection method, amount of each component per transfection etc....Overall, 64% of researchers were unhappy with the new method and 65% wanted to wait until someone else optimizes...

  15. Negative Can Be Positive: Open AAV Data with Addgene

    Type
    Blog Post
    ... different serotypes, promoters, and injection methods are best suited to their particular scientific ... We can all acknowledge that negative data is something every researcher experiences and that it often...meet our minimum standards (clear and detailed methods and image descriptions, a minimum n = 2, and well...scientists can use the Data Hub to compare different methods and vectors, and use this data to guide them in... human gene therapy trials. Human Gene Therapy Methods, 26(2), 71–76. https://doi.org/10.1089/hgtb.2015.040...Serotype 9 (AAV9) Preparations. Human Gene Therapy Methods, 30(6), 214–225. https://doi.org/10.1089/hgtb.2019.105..., Sinn, P., May, A. P., & Paulk, N. K. (2020). Methods Matter: Standard Production Platforms for Recombinant...

  16. Antibodies 101: Producing Recombinant Antibodies

    Type
    Blog Post
    ...Using a spectrophotometer is among the faster methods of quantification. Many spectrophotometers have an...biorender.com   Another method of harvesting uses magnetic beads. In this method, beads are incubated with... washed, followed by antibody elution. Whatever method you choose, you may not be able to elute the antibodies...will also measure the purity of your prep. In this method, antibodies are separated by size on an SDS-PAGE...Gene Expression in Suspension HEK293-EBNA1 Cells. Methods Mol Biol. 2018;1850:1-16. doi: 10.1007/978-1-4939...experimental values as measured by the Edelhoch method. Int J Biol Macromol. 2015;77:260-5. doi: 10.1016...

  17. Viral Production at Addgene

    Type
    Blog Post
    ...lysate method. Purity Purity of AAV preparations is assayed by comparing the relative stoichiometric ratios...Titer by a Novel Droplet Digital PCR Method. Human Gene Therapy Methods, 29(2), 96–103. https://doi.org/10.1089...preps.   Viruses are generated using standard methods that have been optimized for each specific virus...Details about our production protocols, titering methods, and quality control are described below. AAV Production...higher than those achieved using the standard qPCR method.  Titering by the University of Pennsylvania Vector...gene expression and/or function. These data are sometimes reported or posted on the material page for the...titers by droplet digital PCR. Human Gene Therapy Methods, 25(2), Article 2. https://doi.org/10.1089/hgtb...

  18. In Living Color: The Skinny on In Vivo Imaging Tools

    Type
    Blog Post
    ...Shcherbakova and Verkhusha (Nat Methods. 2013 Aug; 10(8): 751-4. doi:10.1038/nmeth.2521) Far-red light photoactivatable...brain, say, or maybe a tumor. They wanted to find something better. Transparency window That’s exactly what...Biotechnology back in 2011 and then in another Nature Methods paper last year. The key to their bacterial phytochome-derived... which absorb the majority of light below 650 nanometers (nm), and the absorbance of water, which absorbs... we can’t localize one cell at a depth of one centimeter with fluorescence is because the light becomes...higher resolution images at depths up to eight millimeters – not single cells (yet) but small clusters of...these probes, he says, when in doubt, read the methods sections of the relevant papers, and then read ...

  19. Hot Plasmids - September 2019 - CRISPR, Auxin Inducible Degradation, MerMAID Channelrhodopsins, and Genome Looping

    Type
    Blog Post
    .../Cas9 based method to tag endogenous proteins in HCT116 cells with mAID. Using this method, the lab was...marine microorganisms based on metagenomic data. MerMAIDs (Metagenomically discovered Marine, Anion-conducting...tagging toolkit at Addgene Yesbolatova et al., Methods, 2019. PubMed PMID: 31026591. Expanding the targeting...their analysis of different publicly available metagenomic data including the Tara Oceans Project datasets...combining the analysis of publicly available metagenomic datasets with biophysical studies and the potential...Find the LADL plasmids at Addgene Kim et al., Nat Methods. 2019, PubMed PMID: 31235883. ...

  20. Easi-CRISPR: Generating Knock-In and Conditional Mouse Models

    Type
    Blog Post
    ... has remained a challenge. Enter Easi-CRISPR: a method that harnesses the power of ssDNA donor molecules...60%. This is much more favorable than previous methods yielding 1-10% knock-in. Read on to learn how you...DNA, but Miura et al. (2015) developed the ivTRT method to ameliorate this problem. Briefly, you design...with standard microinjection and electroporation methods using in mouse transgenics. Designing an Easi-CRISPR... the insertion site. If you are using the ivTRT method, try to make the first two bases of the left homology...terminal)   Easi-CRISPR efficiency and delivery methods Using RNP delivery and microinjection, the efficiency...have also recently developed i-GONAD as a simple method for delivery of genome editing components to the...
Showing: 201 - 220 of 849 results