Skip to main content
This website uses cookies to ensure you get the best experience. By continuing to use this site, you agree to the use of cookies.

Please note: Your browser does not support the features used on Addgene's website. You may not be able to create an account or request plasmids through this website until you upgrade your browser. Learn more

Please note: Your browser does not fully support some of the features used on Addgene's website. If you run into any problems registering, depositing, or ordering please contact us at [email protected]. Learn more

Addgene
Showing: 21 - 40 of 736 results
  1. CRISPR 101: Mammalian Expression Systems and Delivery Methods

    Type
    Blog Post
    Published
    Sept. 24, 2015, 2:30 p.m.
    ...are compatible with all your components. Next, consider the best form for those CRISPR components based...introducing those CRISPR components into your target cells. Delivery of these components into mammalian cell...most effectively achieved with different CRISPR components. Select the appropriate CRISPR tools for your...will you be editing? Do you want to deliver the components as DNA, or would mRNA or protein delivery be ...of the first steps is to identify what CRISPR components you will need to deliver. Minimally, one or more... the best method for introducing those CRISPR components into your target cells.  Mammalian CRISPR expression...best practices for efficient delivery of CRISPR components. If you are new to CRISPR or your model system...
  2. Working with Nuclear Receptors

    Type
    Blog Post
    Published
    July 15, 2014, 4:03 p.m.
    ...co-coregulator) partners. The coregulator ‘core’ complex is composed of a tightly-bound invariant group of proteins...coregulators exist as multiprotein complexes, a member of a single coactivator complex can serve as a rate-limiting...seeking to compliment these consortium-generated datasets with a systematic effort to compile NR- and coregulator-related...physiological processes are controlled by deliberate and compulsory actions instigated by the central nervous system...factors found in metazoans. The superfamily is comprised of 48 human and 49 murine members. NRs permit ...metabolic, and immune response programs. NRs also encompass one of the most successful targets for drugs currently...interact directly with NRs) exist in steady-state complexes with secondary coregulator (or co-coregulator)...
  3. Antibodies 101: Flow Cytometry

    Type
    Blog Post
    Published
    July 20, 2021, 1:15 p.m.
    ...information about the cell’s complexity. A cell with a high degree of internal complexity such as extensive membranes... prepare sets of controls to aid with compensation. Compensation is the process of correcting spectral...need to analyze a specific subset of cells in a complex population. Have you spent hours in the biosafety...cell’s size, granularity, and target protein composition. It is used for a variety of applications such...and detecting specific populations of cells in a complex tissue or sample (1). When combined with cell sorters...instrument collects information about the cell’s size, complexity and fluorescence intensity.   What flow cytometers... cytometers detect Cell size and complexity, measured using visible light scatter The optical system has...
  4. Experimenting in an Open Source lab: from CRISPR to Cats

    Type
    Blog Post
    Published
    July 23, 2015, 2:30 p.m.
    .... The team at the Victoria Makerspace is composed of computer scientists, engineers, and biologists working... elegans as a computer model. When I first heard about it, I got excited from a computer scientist perspective...defects above 25 degrees. Computer scientists and biologists work together to compare the predictions about...interests in biology and computing. In 2009, he founded a team at UVic to compete in iGem, an MIT-sponsored... really epitomizes what the makerspace is. The computer scientists can get involved in modelling, the ...Developing these skills relies upon biologists and computer scientists learning and communicating with one...coding the molecular biology of the worm into a computer model that recapitulates how molecular biology...
  5. Delivery Methods for Generating iPSCs

    Type
    Blog Post
    Published
    April 17, 2018, 1:37 p.m.
    ...iPSC cell lines, which can complicate comparisons made between lines. Incomplete silencing of transgenes ...are prone to incomplete silencing of reprogramming transgenes, which leads to incomplete reprogramming... heterogeneity between clones. This can complicate comparisons made between samples, i.e. transgene expression...efficiency of reprogramming when compared to other methods, even when compared to integrating viral approaches...less time to complete. Morphology is a simple and fast to evaluate. iPSCs should form compact colonies that...and have a higher efficiency of generating iPSCs compared to other delivery methods. Retrovirus has a cloning...lentivirus has similar rates of reprogramming when compared to MMLV-derived retroviruses, it is not as well...
  6. 22 Hot Plasmid Technologies from 2014

    Type
    Blog Post
    Published
    Jan. 6, 2015, 5:21 p.m.
    ...of oxidation (dehydrogenation). MitoTimers are composed of a Timer protein fused to the mitochondrial ...upregulate an alternative pathway or induce other compensatory mechanisms. How can protein function be dissected...’s lab, acutely depleted proteins from their compartment of action via sequestration. The strategy relies...outer mitochondrial membrane. Sequestration is accomplished by knocking down your endogenous protein of ...May 1;126(Pt 9):2102-13. Assemble multiple component plasmids from building blocks via Golden GATEway...GATEway Cloning Frustrated by the complexity of assembling recombination of transgenesis constructs? A new...cloning kit simplifies the cloning process for complex DNA constructs, particular for those involving ...
  7. 28 Hot Plasmid Technologies from 2015

    Type
    Blog Post
    Published
    Dec. 23, 2015, 3:30 p.m.
    ... pre-mRNA splicing in a compound screen. Their reporter system is comprised of two plasmids: Luc (intronless... Vacuolar Compartment mCherry-Rab5 BFP-Rab5 GFP-Rab5B Vacuolar & Budding Compartment GFP-Rab4B ...insights into the make-up of multiprotein complexes like the EPC1 complex.. Going one step further, they also...about it! Split Cas9 system The Cas9 protein is composed of an n-terminal DNA recognition domain and a ...sequencing or other readout. Cellular memory is accomplished by the use of sequence-specific enzymes (e.g...calculated (the BRET ratio), which allows for compensation of varying fusion protein expression levels....more powerful LID, the authors recently used computational protein design, phage display and high throughput...
  8. Plasmids 101: Restriction Cloning

    Type
    Blog Post
    Published
    Feb. 18, 2016, 3:42 p.m.
    ...important that the digest go until completion. The time required for complete digestion varies for different...want to use electro-competent cells instead of the more common chemically-competent cells. You should perform...fragment of DNA (insert) that has been cut by compatible restriction enzymes. An enzyme, DNA ligase, then...plasmid to the new fragment thereby generating a complete, circular plasmid that can be easily maintained... are cut with restriction enzymes to generate compatible overhangs that allow them to bind. Ligase is ...your backbone and insert - these both must have compatible cut sites for restriction enzymes that allow ...    Alternatively, this whole process can be completed using a single enzyme if your insert is flanked...
  9. Career Insights: Technical Support Specialist

    Type
    Blog Post
    Published
    Nov. 9, 2017, 2 p.m.
    ... work for biotechnology companies and help other researchers use the company’s products successfully. ...guidance, and resolve complaints about products. As you might expect, different companies produce different... duties. Bigger companies have dedicated technical support teams, sometimes comprised of several layers...cells (manufactured by one of the larger biotech companies), and as far as I remember, it was the first time...time that I was absolutely convinced it was the company’s fault. I contacted them to express my concerns...rather painful to get there: I had to send the company detailed documentation of my results, answer loads...takes some time (several years) to build up comprehensive lab experience. With this valuable training ...
  10. Plasmids 101: E. coli Strains for Protein Expression

    Type
    Blog Post
    Published
    Feb. 10, 2015, 3:06 p.m.
    ... to accommodate high protein levels including:  ompT: Strains harboring this mutation are deficient in...proteins. lon protease: Strains where this is completely deleted (designated lon or Δlon) similary reduce...IPTG-inducible strain containing T7 RNAP (DE3) F- ompT lon hsdSB (rB- mB-) gal dcm (DE3) General protein...vector cannot have p15A origin of replication F- ompT lon hsdSB (rB- mB-) gal dcm (DE3) pLysS (CamR) ...vector cannot have p15A origin of replication F- ompT lon hsdSB (rB- mB-) gal dcm (DE3) pLysE (CamR) ...which results in longer transcript half-life F- ompT lon hsdSB (rB- mB-) gal dcm rne131 (DE3) General...RNAP; IPTG may still be required for expression F- ompT lon hsdSB (rB- mB-) gal dcm araB::T7RNAP-tetA General...
  11. 15 Hot Plasmids from 2017

    Type
    Blog Post
    Published
    Jan. 9, 2018, 3:02 p.m.
    ...lead to comparable experimental results. Using PiggyBac transposons, the Woltjen Lab compared different...robust engineering. These components are provided in Golden Gate compatible backbones that can be combined...latest hot plasmid updates!     Tol2 Gateway-compatiable toolbox for studying the nervous system The... Cole lab recently deposited the Tol2 Gateway-Compatible Toolobox, which will allow scientists to quickly... neuorodgenerative diseases. The Tol2 Gateway-Compatible Toolbox is based on the original Tol2kit generated...vectors that have standard cloning sites or gateway compatible cloning sites for easy cloning of your genes ...adds new neuronal tools to the expanding gateway compatible vectors currently shared amongst the zebrafish...
  12. Golden Gate Assembly Upgrades: More Fragments, Faster Assembly, and Higher Fidelity

    Type
    Blog Post
    Published
    Oct. 11, 2018, 12:30 p.m.
    ...with increasingly complex experimental conditions. The ability to construct more complex, multi-fragment...fragments in a single “one-pot” reaction to form complex, multi-insert modular assemblies that enable biosynthetic...as enzyme efficiency, stability, and buffer compatibility have placed practical limits on single- or two-step...enzyme cutting results in 5’ four base overhangs complementary to the overhangs of the assembled inserts. After...assembly Intermediate 5- or 12-fragment assembly More complex 24-fragment assembly Single insert cloning efficiencies...Sequencing of blue colonies showed the expected complete sequence for the lacI/lacZ genes (1), while sequencing...setting up assembly reactions in which a single component was purposefully omitted. Since any assembly is...
  13. Bioinformatics at Addgene

    Type
    Blog Post
    Published
    July 14, 2022, 1:15 p.m.
    ... Nextflow script. With our completed pipeline, we could adjust the compute resources when needed, for ... number of deposited plasmids increased, the accompanying sequencing data collection and analysis eventually...needed to transform the raw sequencing data into a complete plasmid sequence that would be ready for our QC...data pipeline is to perform several sequential computational tasks for which existing script(s) have been...containers are they are designed to ‘contain,’ in a complete package, all of the pieces of software that depend...is sequestered from other programs running on a computer, so it safely operates in isolation, and can be... be easily shared with others without any complicated setup. We created, tested, and debugged each of ...
  14. Transferable Skills Guide: Time Management

    Type
    Blog Post
    Published
    Dec. 5, 2017, 1:52 p.m.
    ...tasks that can be accomplished quickly and things that will take longer. Completing the quick and useful...project they’re a part of, completing them will give me some sense of accomplishment. I will prioritize which...its utility) How much time it will take you to complete the task When picking which tasks to actually...will swiftly give you the wonderful feeling of accomplishment while the longer tasks will give you larger...larger payoffs later. Don’t be afraid to accomplish some quick but moderately useful tasks at the expense ...the long and highly useful tasks. The quick accomplishments will likely energize you. For example, let'...experiment. The first way, it will take you 3 days to complete the entire experiment, but you’ll have to spend...
  15. Antibodies 101: Conventional vs Spectral Flow Cytometry

    Type
    Blog Post
    Published
    Aug. 3, 2023, 1:15 p.m.
    ...user to compare the emission spectra between all of the markers in the panel. This complexity index ranges...choice for overlapping markers. Compensation/reference control(s) Compensation or “reference” controls are...detector for PE. In order to correct for this, compensation has to be applied to “subtract” this spillover...up a small portion of that spectra to use for compensation.     Figure 1: The emission spectra... discern one marker from another. Instead of compensation, which relies on user adjustment, spectral flow...cytometry relies on “unmixing.” Unmixing uses a complex mathematical algorithm and single stained reference...series of histograms flipped onto its side and compressed into a heat map. BV421 peaks in V1, with secondary...
  16. INTEGRATE: Bacterial Genome Engineering Using CRISPR-Transposons

    Type
    Blog Post
    Published
    Dec. 7, 2020, 2:53 p.m.
    ... were used to express the necessary components in E. coli (Klompe et al., 2019). Recently, the lab introduced... Sternberg and Zhang labs (Peters et al., 2017; Klompe et al., 2019; Strecker et al., 2019), which direct... a Type I-F CRISPR-Cas system. The four major components required for RNA-guided DNA integration are (... (Fig. 1A, top):  A CRISPR RNA (crRNA) comprising a 32 nt spacer sequence specifying the target site....sequences (R and L ends).  Figure 1: (A) Components involved in each type of CRISPR-Transposon system...multiple Cas proteins to form the Cascade targeting complex is a hallmark of Type I CRISPR-Cas systems, in ...nuclease activity. Instead, it forms a novel co-complex with the transposition protein TniQ for targeting...
  17. Analyzing CRISPR Editing Results with ICE from Synthego

    Type
    Blog Post
    Published
    May 8, 2018, 1 p.m.
    ...which can compare up to five editing experiments at a time, and batch analysis, which compares hundreds...edits performed over multiple experiments and comparing the robustness, accuracy, and speed with existing...the accuracy of ICE analysis results was highly comparable (within r2=0.96) to that of NGS data. Advantages... functional KO of the targeted gene.   Analyze Complex Edits   Traditional Sanger sequencing-based analysis...analysis tools are unable to detect or analyze complex edits, such as those generated by multiplexed delivery... How ICE works   Following delivery of CRISPR components into target cells, genomic DNA from both edited...populations is PCR-amplified and Sanger sequenced. ICE compares these sequence traces to give a detailed analysis...
  18. Corralling and Cornering the Goldilocks Antibody

    Type
    Blog Post
    Published
    Aug. 9, 2022, 1:15 p.m.
    ...tissue and compare the IHC results to both NeuroMab and the Allen Brain Atlas. The comparison with two ...what you’re comparing your sample to. For example, we use our negative control to compare exposure times...cannot be reproduced and projects that cannot be completed. A 2015 review analyzing and explaining the antibody...reliable (wouldn’t perform differently over time), compatible with the desired applications (such as immunohistochemistry...techniques on rodent brains and is expanding to more complex brain systems such as non-human primates and humans...polyclonal antibodies because of their immunoglobin component that can be produced in large “copies.” This homogeneity...monoclonal antibodies; Addgene collaborates with these companies to create and provide general availability of ...
  19. Using AAV for Neuronal Tracing

    Type
    Blog Post
    Published
    Aug. 9, 2018, 1:04 p.m.
    ...is mediated via individual neurons. Neurons are composed of a cell body, with dendrites receiving incoming...tracing experiments, brain tissue is injected with compounds that intracellularly spread away from the site...distant brain areas. It is desirable for tracing compounds to outline neurons in the direction of information...proteins facilitate transport of neuronal tracing compounds and this is an area that requires further study... neuronal tracing methods Traditional tracing compounds either produce a colorimetric product or are fluorescent...health. Another limitation of traditional tracing compounds is that their diffusion across the synaptic cleft... These methods are less neurotoxic and better compatible with other neuroscience methods such as electrophysiological...
  20. Academic vs. Industry Postdocs

    Type
    Blog Post
    Published
    Nov. 13, 2018, 1:22 p.m.
    ...more about the company’s program. Once you’ve found a few positions to apply for, compare and contrast ...eventually work at the company at which you’re doing your postdoc? Some companies, such as AstraZeneca,... open up. Other companies, such as Genentech, will not. The point is that each company has a unique approach...people involved is staggering. The process is complicated. If you’re interested in the drug discovery process... publish, but this can vary depending on which company you choose. If publishing is important to you, ...that your project will not involve proprietary compounds or information. Where publication is expected,...meetings. How do I get an industry postdoc? Many companies have industry postdoc positions, including AstraZeneca...
Showing: 21 - 40 of 736 results