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We narrowed to 965 results for: ache

Showing: 241 - 260 of 965 results
  1. Adapting Toehold Switches to Detect Zika Virus

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    Blog Post
    ...need for low-cost, field-based diagnostics, our approach could make an impact. Our motivation was underscored.... We also were careful to set up clear tasks for each member of the team to accomplish so that many elements...expertise of the group and yet never hesitated to reach out to the greater research community when we needed...involved in the effort. This inclusive and open approach by all involved definitely contributed to our ...). Using toehold switch-based RNA sensors, our approach uses portions of the pathogen’s genome as unique...portable quantification of diagnostic results.  Our approach now detects samples at clinically relevant concentrations...longer-term aim is to advance our programmable approach to other critical needs and to further develop...
  2. Golden Gate Assembly Upgrades: More Fragments, Faster Assembly, and Higher Fidelity

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    Blog Post
    ...hierarchical approaches using different Type IIS restriction enzyme specificities at each step. Factors...Our work demonstrates that it is now possible to achieve 20+ fragment assemblies with both robust efficiency...Additional confirmation of accurate assemblies was achieved by the sequencing of plasmids isolated from blue...illustrates how the volume of the 1 ml outgrowth spread on each transformation plate can be manipulated to result...fragment lacI/lacZ cassette assembly was easily achievable with high levels of transformants and low backgrounds...researchers continue to test the limits of DNA assembly approaches with increasingly complex experimental conditions...
  3. Fluorescent Proteins 101: Fluorescent Protein Timers

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    Blog Post
    ...Snapp’s blog post shows. To avoid these issues, Subach et al. and Tsuboi et al. developed monomeric FP...mK-GO from Tsuboi et al. and the FT series from Subach et al.) were derived from previously developed ... while attempting to enhance mKO in other ways, Subach et al made a concerted effort to develop their ...see Table 1 for emission and absorption spectra). Subach et al’s directed mutagenesis also produced the ...Monomeric FP Timers and Associated Plasmids from Subach et al. Protein Excitation (nm) Emission (nm)...following its subcellular localization overtime (Subach et al.) Monitor protein expression dynamics in ... (2001): 29621-29624. PubMed PMID: 11408473. 4. Subach, Fedor V., et al. "Monomeric fluorescent timers...
  4. PhD Applications After COVID

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    Blog Post
    ...application cycle becomes much more complex. “How do I reach out to potential mentors?” “Where do I start with...research that aligns with your interests and goals.  Reaching Out to Potential PIs Even if you’re applying to...application process. Many institutions recommend that you reach out to potential advisors before submitting your...your application that you intend to work with, so reach out to three in case one isn’t able to respond to...your email. During my PhD application cycle, I reached out to around twelve professors and heard back ...you determine if the program is the right fit. Reaching out to PIs also means doing plenty of mini-interviews...applications can get to know faculty, students, and each other. Before COVID-19, financial and logistical...
  5. Google Forums Round Up: First Impressions of NgAgo

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    Blog Post
    ... that many researchers were having difficulty achieving indel formation (gene disruption) with this new...used by respondents (transfection method, amount of each component per transfection etc.). Take Pooran's ...most of the respondents have been struggling to achieve genome editing with NgAgo, this does not mean the...successful indel generation and epitope knockin was achieved by a few respondents suggesting that NgAgo can...most of the researchers surveyed here could not achieve indels with the NgAgo system indicates that it ...which might be rapidly degraded by the cellular machinery, leaving a small amount of active NgAgo/ssDNA ... cell. As proposed in the original article, to achieve greater efficacy, researchers will have to carry...
  6. CRISPR Antimicrobials

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    Blog Post
    ...resistance is upon us, and the world is unprepared. Each year in the United States, two million people will...to combat antibiotic resistance using multiple approaches. Major restaurant chains including Chipotle and...bacteria have poor non-homologous end joining machinery, so a CRISPR-induced double-stranded break (DSB...is efficient delivery, as the antimicrobial must reach essentially every cell or else small pools of antibiotic...into the bacterial genome, and it carries CRISPR machinery targeting 1) the given resistance gene and 2) ...with the caveat that phages are very diverse, and each phage has a narrow bacterial host range. To further...Ando et al. recently engineered synthetic phages, each based on the well-studied T7 phage, to target various...
  7. CRISPR 101: Any Base Transversion Editors

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    Blog Post
    ...incorporate A bases across from abasic sites. This approach resulted in a maximum A → T product purity of ...AYBEv3!). Although AYBE, AXBE, and ACBE do not approach the high product purity of CBEs and ABEs, they...). Several different teams succeeded with this approach around the same time (He et al., 2024; Tong et...al., 2024; Ye et al., 2024; Yi et al., 2024). In each case, a UNG enzyme was modified to recognize T and...editing window than existing CGBEs. This distinct approach means researchers can now select the best tool...although the efficiency, purity, and indel rate of each tool vary considerably. And there’s so much more...on in the base editing field! From CRISPR-free approaches to mitochondrial base editing to base editors...
  8. Twenty Years of Sharing: Addgene's Viral Vector Service

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    Blog Post
    ...easy to ship as plasmids, they still have a global reach. From 2016–2023, we shared 93,491 viral vector preps...Cumulative AAV preps available in the Addgene repository each year from 2016–2023. B) AAV preps distributed per...viral vectors. This process builds on our former approach and involves reading primary literature, soliciting... viral vectors service puzzle: the usefulness of each viral prep in practice. The number of requests shows...redesigned Data Hub in 2022. It’s influenced the way we approach our viral vector educational resources, from eBooks...Cepko, C., Guerin, K. I., Rego, M. A., Ersing, I., Bachle, S. M., Kamens, J., & Fan, M. (2019). Adeno-Associated... Rachel Leeson...
  9. CRISPR Activation: A Practical Guide

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    Blog Post
    ...specific UV wavelengths or chemicals (Polstein and Gersbach, 2015; Zetsche et al., 2015). These types of CRISPR...native conditions, the less activation you can achieve using a CRISPRa. Your gene of interest might already...your system is working as expected. Finally, for each gene you want to activate, you should also be ready...Dow D, Buser-Doepner C, Bertotti A, Trusolino L, Stronach EA, Saez-Rodriguez J, Yusa K, Garnett MJ (2019...engineering parameters via a library-on-library approach. Nat Methods 12:823–826 . https://doi.org/10.1038...JL, Davidsohn N, Housden BE, Perrimon N, Weiss R, Aach J, Collins JJ, Church GM (2015) Highly efficient...doi.org/10.1016/j.cels.2018.04.011 Polstein LR, Gersbach CA (2015) A light-inducible CRISPR-Cas9 system...
  10. Hot Plasmids: February 2026

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    Blog Post
    ...packaging plasmids at Addgene By Meghan Rego Reliably achieving high yields for your viral vector preps can be... coli strain to use only two, by deleting the machinery that recognizes UAG and deleting all instances... et al., 2013). But the remaining termination machinery has multiple functions, and furthermore, UGA is...the Rinehart and Isaacs labs were able to isolate each of these functions to a single codon (Grome et al... genomes and feature additional gene targets for each species. Second, they use updated gRNA design models...were transfected with human and mouse variants of each NRXNb family member and labeled with Anti-Neurexin...Anti-Neurexin-3-beta [IPI-NRXN3b.31] (Addgene #237812). Each graph depicts the mean fluorescence intensity of Anti-Neurexin...
  11. Multicolor Animals: Using Fluorescent Proteins to Understand Single Cell Behavior

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    Blog Post
    ...colors to label an organ or entire organism. Because each cell can have multiple copies of the transgene that... colors when a combination of XFP are expressed. Each cell remains the same color for its entire lifetime... as many as 16 copies of the injected transgene, each of which could recombine to activate the expression...expression of a different fluorescent protein. Therefore, each cell could express a unique combination of all of...construct, dBrainbow includes small epitopes fused to each XFP. Secondary antibodies that target these epitopes...onto a tamoxifen-inducible ubiquitin background, each cell in the mouse that expresses Cre undergoes exactly... exactly one recombination event, leading to each copy of the transgene expressing either YFP or CFP, ...
  12. Site Directed Mutagenesis by PCR

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    Blog Post
    ...substitutions (or deletions) in a tailored manner. The approach can be used in conventional cloning (to introduce...reverse primers are designed to be complementary, but each primer may extend beyond the complementary region...larger band (not shown). As a footnote; a similar approach can be used to identify Cas9/CRISPR-induced genome...template for the mutagenesis reaction. Alternative approaches to site directed mutagenesis Point-mutagenesis...PCR-introduced mutations can make alternative approaches more favorable if you want to introduce a point... introduce a frame-shift mutation. This can be achieved using a restriction enzyme that recognizes a unique...directed mutagenesis is one of the most popular approaches for introducing minor modifications to a plasmid...
  13. Evolution of Brainbow: Using Cre-lox for Multicolor Labeling of Neurons

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    Blog Post
    ...antibodies specific to each fluorophore. Third, Brainbow-1 and Brainbow-2 each contained a “default” state...construct contains two tandem invertible segments, each with two fluorescent protein coding sequences in...then successfully generated custom antibodies to each of these proteins and confirmed that there was no...opening the door for immunostaining analysis. To achieve even cell labeling, they generated farnesylated...-EF1a-BbTagBY. These constructs contain two XFPs each due to size limitations associated with AAV; co-... Nov 1;450(7166):56-62. PubMed. A technicolour approach to the connectome. Lichtman JW, Livet J, Sanes...
  14. Six Spooky Science Stories and Halloween at Addgene

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    Blog Post
    ...gills. It attaches there until they mature and changes sex from male to female. Then, it detaches from the...their foraging trail. They climb upwards until they reach a point where the temperature and humidity favors...Vampirovibrio chlorellavorus is a predatory bacteria that attaches to the cell wall of green algae (Soo et al., 2015...eyestalks. Once ingested by the snail, the larvae reach the eyestalk and transform them into a pulsating... grasshopper harbouring hairworm: a proteomics approach." Proceedings of the Royal Society B: Biological...
  15. Tag Your Favorite Yeast Genes with Ease

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    Blog Post
    ... MS, McKenzie A 3rd, Demarini DJ, Shah NG, Wach A, Brachat A, Philippsen P, Pringle JR. Yeast. 1998 Jul... in epitope tags? Others may be interested in attaching epitope tags to their genes of interest, allowing...complete collection of yeast tagging modules with each possible combination of protease site (TEV or PreScission...and selection marker (KanMX, HphMX, or His3MX).  Each PCR product from this collection will yield an insert...Longtine MS, Shah NG, McKenzie A 3rd, Steever AB, Wach A, Philippsen P, Pringle JR. Yeast. 1998 Jul;14(...
  16. Mapping the 4D nucleome with CRISPR/Cas9

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    Blog Post
    ...could then be used to examine both inter- and intrachromosomal dynamics, and how they change in response ... to SpCas9 and its orthologs NmCas9 and St1Cas9. Each ortholog was fused to a different fluorescent protein... to differences in the PAM sequences required by each ortholog, a gRNA designed for one dCas9 should be...turned their attention to mapping pairs of intrachromosomal loci. The technique successfully resolved ... this work represents the first mapping of intrachromosomal loci, a major benchmark in characterizing ...under lower illumination settings, lowering photobleaching and phototoxicity concerns and extending the...
  17. CRISPR Methods for Bacteria: Genome Engineering, CRISPRa, CRISPRi, Base Editing, and More

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    Blog Post
    ...gRNA targeting approach is then used to direct the complex to a specific locus. This approach provides a ...a technique that utilizes phage recombination machinery to promote homologous recombination of linear ...resistance E. coli carrying the phage recombineering machinery are first electroporated with pCas9. Then, pCRISPR...repair template is supplied as a dsDNA fragment. Each round of editing takes two days, and the pTargetF...method in E. coli, Jesse Zalatan’s lab used an approach to identify known proteins involved in the activation...polymorphisms, including antibiotic resistance genes. This approach successfully targeted specific organisms when ...et al., 2018).  Base Editing Among the newest approaches that leverage the remarkable properties of CRISPR-Cas...
  18. The Open Repository of CRISPR Screens: CRISPR Screen Data in One Place

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    Blog Post
    ...houses over 890 CRISPR screens in 629 cell lines, each manually curated and annotated from more than 45... cancer cell lines. Screenshot updated 2024. Each screen curated in ORCS is linked to the original...particular screens of interest.   Figure 3: Each publication featured in BioGRID ORCS has a dedicated...Screenshots updated 2024. Importantly, metadata for each screen is captured by BioGRID curators, including...used by the authors to determine the gene hits for each screen are also captured as metadata.   Screen results...publication are also provided for the user. This approach serves to maintain consistency with published ...
  19. Bricking Science: Portraying Scientific Reality Through LEGO

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    Blog Post
    ... the most approachable for LEGOs. Stop motion consists of taking many pictures, one for each position ...video. We’ve grown attached to the work, and I confess that, when I finish building each scenario, I go “...one doing experiments in France. We can learn with each other through globalized, collaborative thinking...help further unlock the potential contained within each. There must be some way to use LEGOs, which are ...
  20. Tetbow: Bright Multicolor Labeling for Neuronal Tracing

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    Blog Post
    ...light microscopy-based neuronal reconstruction. To achieve stochastic multicolor labeling, Brainbow used the... Stochastic multicolor labeling is possible when each of the XFP genes is introduced at ~2 copies per ...you use AAVs, it typically takes a few weeks to achieve optimal expression of XFPs. Any longer and the ... introduced at ~2 copies per cell per color to achieve the highest color variations. Adjust the plasmid...Tetbow AAVs - You will have to wait a few weeks to achieve an adequate expression level of the Tetbow AAVs...critical to express a minimal amount of tTA to achieve highest expression levels. Clearing large tissues...
Showing: 241 - 260 of 965 results