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We narrowed to 803 results for: Cre

Showing: 221 - 230 of 803 results
  1. Antibodies 101: The Four ELISAs and When to Use Them

    Type
    Blog Post
    Published
    July 25, 2024, 1:15 p.m.
    ...level of antigen in the sample. This figure was created with BioRender.com  Direct ELISAs A direct ... bind non-specifically to assay components and increase background staining. Direct ELISAs also lack the... antibody. Incorporating a secondary antibody increases the sensitivity of the assay, since multiple secondary... both primary and secondary incubation steps, increasing the workload and time commitment for users. This...antibodies for the capture and detection steps, which increases the specificity of the assay. The assay is also...antibody availability Longer protocolLess specificityIncreased chance of cross-reactivity Sandwich ... High specificityHigh sensitivity Longer protocolIncreased chance of cross-reactivityChallenging to develop...
  2. Plasmids 101: Broad Host Range Plasmids

    Type
    Blog Post
    Published
    April 11, 2024, 1:15 p.m.
    ...they function in nature can inform us on how to create better recombinant vectors. In this blog post, ...provide tips on how we can harness those features to create broad host range recombinant vectors.  A plasmid... host range in plasmids? Not all plasmids were created equally. Only a handful of plasmids have been identified..., from broad host range plasmids can be used to create recombinant vectors that can replicate in different...vinelandii, Brevibacterium methylicum, Caulobacter crescentus, Desulfovibrio vulgaris, Erwinia carotovora, ..., Bordetella spp., Brucella spp., Caulobacter crescentus, Escherichia coli, Gluconacetobacter xylinus,...recombinant vectors can be modified further to increase the range of hosts in which proteins can be expressed...
  3. Harnessing TnpB for Genome Editing: A Compact and Versatile Tool for Your Research

    Type
    Blog Post
    Published
    July 29, 2025, 1:15 p.m.
    ...downstream of the TAM, creating staggered double-strand breaks like those created by Cas12a. Applications...TnpB from Deinococcus radiodurans (Dra2TnpB) to create a genome editing system for plants (Karmakar et... proteins with additional enzymes or domains (increasing the overall size), using TnpB as the core nuclease... using your method of choice. Step 5: Colony Screening Use Primer 92F (5′-cattacgcaattggacgacaac-3′)...′) and Oligo 2 (specific to your target) to screen colonies via PCR. A 354-bp product confirms successful...insertion. Alternatively, use M13R and Oligo 2 to screen. A 667-bp product confirms successful insertion...
  4. Addgene Stands with the Scientific Community

    Type
    Blog Post
    Published
    April 23, 2025, 1:30 p.m.
    ...limitations to facilities and indirect costs, and increased tariffs present an unprecedented challenge to ...to help research institutions maximize their increasingly limited resources: Preserving scientific assets...authenticated materials at a fraction of the cost of creating and verifying them independently — particularly..., and antibody production that labs may find increasingly difficult to maintain or access. These services...with industry and public and private partners to create additional pathways for critical scientific work...community has demonstrated remarkable resilience and creativity in the face of funding challenges. By strengthening...
  5. The 10 Most Distributed Plasmid Technologies in Addgene's First 10 Years

    Type
    Blog Post
    Published
    Jan. 8, 2014, 3:10 p.m.
    ...was Addgene's first distributed plasmid and was created in the lab of my thesis advisor, Dr. Bruce Spiegelman...requested item of 2005. shRNA - In 2006, we saw an increase in popularity of empty backbones for shRNA expression...requested. Ubiquitin - One particular gene we saw increased interest in from 2008 to 2009 was ubiquitin. The...popular with scientists, but 2012 was marked by increased deposits (and requests) of biosensors, optogenetics...and for so many different purposes that we had to create a CRISPR page to keep up with all the new plasmids...of plasmid sharing? Check out this infographic created by our own Addgenie, Laura Veckerelli. Click on...
  6. Harnessing Bacterial Toxins for Allelic Exchange

    Type
    Blog Post
    Published
    Aug. 15, 2019, 12:30 p.m.
    ...Harvard. There’s an astounding number of ways to create chromosomal mutations in bacteria, so many that...of surrounding genes. However, there are ways to create scarless mutations, ones that don’t leave any undesired..., CRISPR-Cas9 technology has also aided in the creation of scarless mutations, both in stand-alone systems...systems (Jiang et al., 2013), and those which increase the efficiency of Lambda red (Pyne et al., 2015;... recombineering (Khetrapal et al., 2015). They created vectors for Lambda Red that contained one of eight...aeruginosa. These toxins were a mix of Type VI secreted effector toxins, toxin-antitoxin type toxins, ...Enterobacter cloacae, and Serratia marcescens and have created dozens of deletions as well as insertions with ...
  7. Antibodies 101: Normalization and Loading Controls for Western Blots

    Type
    Blog Post
    Published
    April 8, 2025, 1:15 p.m.
    ...also helps confirm that lanes are loaded evenly. Created with BioRender.com. Loading controls are even...normalized values for the two conditions are equal. Created with BioRender.com. This kind of normalization...must be addressed with separate controls (green). Created with BioRender.com. Researchers often rely ... of the assay is between the two dotted lines. Created with BioRender.com. To see why this S-shaped...protein abundance versus band intensity (right). Created with BioRender.com. On this gel, the protein...loading control that can be used for normalization. Created with BioRender.com. Assumption #1: The loading...protein approach. By eye, it’s difficult to see an increasing concentration of β-actin in panel A. Indeed, ...
  8. A new platform for fast functional characterization of potentially cancerous mutations

    Type
    Blog Post
    Published
    May 7, 2019, 12:39 p.m.
    ...therapeutic interventions for cancer. This screening platform is an incredible boost to the cancer research community...Barcoding (HiTMMoB) technique (Tsang et al., 2016), creating a collection of plasmids each carrying a single...mutations The researchers used the collection to screen individual perturbations in vitro using Ba/F3 and...~22% of the mutations, however, significantly increased cell viability, and these “activators” may be ...annotation of rare gene aberration drivers of pancreatic cancer." Nature communications 7 (2016): 10500...
  9. What's New in CRISPR - March 2020

    Type
    Blog Post
    Published
    March 10, 2020, 1:15 p.m.
    ... in yeast Base editing CRISPRi in Caulobacter crescentus Multiplexed gRNA for human pluripotent stem cells...editing. Using several rapid and cost-effective screening methods, David Liu’s lab identified and validated... base editor plasmids CRISPRi in Caulobacter crescentus Figure 1: Serial dilutions of CRISPRi in...adapted from Guzzo et al., 2020. Caulobacter crescentus is a popular model organism for studying the ...ctrA sgRNA and saw that the levels of ctrA mRNA decreased after 20 minutes in xylose (which controls expression...methylcytosine oxidation to DNA repair, which increases activation of methylation-silenced genes. Read...
  10. Viral Vectors 101: AAV Serotypes and Tissue Tropism

    Type
    Blog Post
    Published
    Jan. 16, 2025, 2:15 p.m.
    .... Figure 1: Diagram of AAV components. Created with BioRender.com. AAV vectors have both distinctive...AAV2, and so on. In addition, researchers have created many engineered serotypes by mixing, matching, ...liver, muscle, lung, CNS, kidney, retinal, and pancreatic cells (Ahuja et al., 2025; Issa et al., 2023;...been shown to transduce skeletal muscle, cardiac, pancreas, smooth muscle, CNS, kidney, and retinal cells...been shown to transduce liver, skeletal muscle, pancreatic, and retinal cells (Issa et al., 2023). AAV11... Kidney AAV8 Liver AAV8, AAV9 Lung AAV6 Pancreas AAV2, AAV8 Photoreceptor cells AAV2, AAV5, AAV8...2025). Evaluation of transduction efficiency in pancreatic beta and alpha cells utilizing various AAV serotypes...
Showing: 221 - 230 of 803 results