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Showing: 341 - 360 of 975 results
  1. New Tools Enable CRISPRa for Neuroscience Applications

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    Blog Post
    ...through experience. However, studying the genetic underpinnings of these processes has been complicated by the...-optimized viral vectors, and high-throughput screening approaches. Here, we’ll highlight these recent...lentiviral vectors can be found here. High-throughput screening strategies Although the tools described above ...Lab, which developed a subgenome-scale CRISPRa screening approach in embryonic stem (ES) cells to determine...from undifferentiated cells at the end of the screening process. However, while the neuronal marker TUJ1...gymnastics for sensitive applications such as CRISPR screening. The plasmids used by the Qi Lab for this particular...
  2. Antibodies 101: The Four ELISAs and When to Use Them

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    Blog Post
    ...generally have higher levels of background staining. Antigen-containing samples often include undesirable molecules...non-specifically to assay components and increase background staining. Direct ELISAs also lack the signal amplification...a capture antibody and then add their antigen-containing sample. The target antigen binds to the capture...antigen and then they preincubate the antigen-containing sample with their conjugated primary antibody...cross-reactivity Higher level of background stainingLess sensitivityLess specificityLimited availability...
  3. Overcoming the AAV Size Limitation for CRISPR Delivery

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    Blog Post
    ...genes in mouse muscle and eye tissue. Neisseria meningitidis Cas9 (NmeCas9) at 1,082 amino acids, can also...catalytic domain of RNA deaminase ADAR2. Constructs containing the ADAR2 truncation ADAR2DD(delta984-1090) are...virus delivery and genome editing by Neisseria meningitidis Cas9 in vivo. Genome Biol 19: . https://doi.... Comander J, Liu Q, Liu DR (2020) Cytosine and adenine base editing of the brain, liver, retina, heart...Kriz AJ, Zetsche B, Shalem O, Wu X, Makarova KS, Koonin EV, Sharp PA, Zhang F (2015) In vivo genome editing... Schmid-Burgk J, Zetsche B, Gao L, Makarova KS, Koonin EV, Zhang F (2019) Engineering of CRISPR-Cas12b...
  4. Avoiding the Dark Side of Fluorescent Protein Fusions with mOX FPs

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    Blog Post
    ...Observing a bright signal for the first time after cloning an FP fusion with your favorite protein of interest... an FP within a fusion construct [1,2], i.e. positioning of the FP sequence relative to cell compartment...C-terminus [3]. You must therefore determine your cloning strategy and decide whether you will create an ... experimental needs. Equally important, before cloning you must consider whether and how well your FP ...fluorescing (see Figure 2) [5].  When using FPs containing two cysteine residues and a sequence intended... al. "Protein oligomerization modulates raft partitioning and apical sorting of GPI-anchored proteins....
  5. Important Considerations in Optogenetics Behavioral Experiments

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    Blog Post
    ...might be contextual fear conditioning (reviewed in [4]). Contextual fear conditioning is a behavioral experiment...prolonged inhibition of CA1 neurons attenuated conditioning, which suggests that other regions of the brain...technique in neuroscience it has a bit of a steep learning curve and many opportunities for mistakes. The...University.  His interests include the role of learning and memory in opioid addiction and science communication...Kheirbek, Mazen A., et al. "Differential control of learning and anxiety along the dorsoventral axis of the...
  6. Replacing Paper: Tips for Choosing an Electronic lab Notebook

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    Blog Post
    ...schedules more organized. From the alarm in the morning, to the daily news briefing, to quick notes, to...users with a holistic means to manage their work, combining data, team, inventory and project management functionalities...Implementing an electronic lab notebook starts with defining your lab’s needs The values of ELNs show in the...your lab members will use the ELN. If your lab is planning to grow in the upcoming years, it is also good...include comments, notifications, sharing files, assigning team members to certain tasks, etc. How is security...Product Marketing Manager at SciNote, interested in combining scientific research with tech advances. You an...
  7. Adeno-associated Viruses (AAVs) for Genome Editing

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    Blog Post
    ...vectors for your specific gene, the lab recommends designing homology arms with the modification of interest...synthesis company such as IDT or Genscript, and cloning them sequentially into the chosen acceptor vector...that causes Hemophilia B. Unfortunately, work combining CRISPR with AAVs for improved genome editing is...gene fusions. The current state-of-the-art in combining the AAV and CRISPR-based approaches is described... Medicine. His research currently focuses on determining the mechanisms and consequences of cohesin gene...Epstein, Benjamin E., and David V. Schaffer. "Combining engineered nucleases with adeno-associated viral...
  8. An Integrin Antibody Toolkit from IPI

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    Blog Post
    ...short intracellular ends and large ectodomains containing ligand-binding heads and long legs that protrude...affinity. This extended-open state is key to strengthening ligand binding, mediating cell adhesion and ...technology, are directed to integrins that bind the Arginine-Glycine-Aspartate (RGD) amino acid sequence in...displayed by a subset of the RGD-binding integrins containing the αV subunit. Using these affinity reagents...education in protein science, IPI hosts events and training courses on technologies and laboratory techniques... website and stay informed on future events by signing up for the IPI newsletter. The collection of 26...
  9. Antibodies 101: Introduction to Immunofluorescence

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    Blog Post
    ...the most important considerations to make when planning and performing an IF experiment. What is immunofluorescence...include: permeabilization, antigen retrieval, and sectioning. Blocking Block is used to reduce non-specific...experimental goals. Example steps include: counterstaining, mounting sample on slides, and confocal   ...your most pressing research questions, but also stunning images (am I the only one with IF results as artwork...    References and resources References Im K, Mareninov S, Diaz MFP, Yong WH (2018) An Introduction to...to Performing Immunofluorescence Staining. In: Methods in Molecular Biology. Springer New York, pp 299...
  10. How to Negotiate a Successful Lab Start Up Budget

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    Blog Post
    ...start defining keywords you’ll want to find in candidates’ resumes or CVs; “vivarium”, “weaning”, “colony...developing a budget, I suggest that you focus on defining these resources and not on the financial aspects...your current P.I., lab manager, or administrator containing all of the materials that you’ve used within ...colony”, etc. This will help save time by screening out irrelevant candidates, and, more importantly, it...Channel your inner curiosity and use your research training to help you find other solutions to reach your...
  11. Synthetic Biology, Artificial Chromosomes, iGEM & More - Interview with Tom Ellis

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    Blog Post
    ...advice for anyone pursuing a career in academia. Learning how to build a lab and a research program and ... biology to the UK with foundational research, training, startups, and real applications of SynBio. Chapter...seen with things like DNA synthesis, Golden Gate cloning, and CRISPR. The yeast synthetic genome project... of Cambridge before spending time in biotech screening direct interactions between drugs and promoters...Nonprofit BioBuilder Plasmids 101: Golden Gate Cloning Learn About Working at a SynBio Startup in Our ...
  12. Microbes: Look, Listen, and Tell

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    Blog Post
    ...may think about sitting amongst a sea of chairs listening to talks all day. But nope, not at the American...everyone - everywhere! From ‘looking at’ to ‘listening to’ microbes But seeing microbes through a microscope...Shapiro from Caltech presented an exciting way of listening to microbes by using non-invasive methods for ...approaches to presenting the microbial world After learning about using sound to visualize bacteria in the...Raymond W., et al. "Acoustic reporter genes for noninvasive imaging of microorganisms in mammalian hosts....
  13. How to Design Your gRNA for CRISPR Genome Editing

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    Blog Post
    ... involves the need for single cell cloning and subsequent screening for successful edits. This is a very...important to remember that the same is true when designing gRNAs for using CRISPR technology – the “best”...and sequence are important considerations for designing your gRNAs. For indels, it's not so important ..., the error-prone nature of non-homologous end joining (NHEJ) often leads to the generation of indels ...requires not one but two rounds of single cell cloning – as a control, one should revert the edit back...
  14. Generating Mouse Models Using CRISPR/Cas9

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    Blog Post
    ...Many thanks to our guest bloggers, Wenning Qin and Haoyi Wang! Wenning Qin is a molecular biologist with.... This post was contributed by guest bloggers, Wenning Qin and Haoyi Wang. CRISPR/Cas9 is revolutionizing...al., 2013). Like everyone else in the world, I (Wenning) was fascinated by CRISPR and rushed to test it... hard. I was mentally prepared to go through a learning curve that would result in success only after ...broken ends together through non-homologous end joining (NHEJ), this will leave behind a “scar”, with nucleotides...
  15. What's New in CRISPR - December 2019

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    Blog Post
    ...Synthetic Biology Find the CRISPRi toolkit SECURE adenine base editor Earlier this year, Keith Joung’s lab...to rat APOBEC1. Now, they’ve engineered SECURE adenine base editor variants using a protein-truncation...pyogenes Cas9. They called this editor Target-ACE (adenine and cytosine editor). Target-ACE exhibits increased...inactivated RNA-targeting Cas13 (dCas13) with the adenine deaminase domain of ADAR2. Now, they’ve further...this editor for C-to-U editing by evolving the adenine deaminase domain of ADAR2 into a cytidine deaminase...
  16. Modulate the Activity of 17 Signaling Pathways with One Kit!

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    Blog Post
    ...colleagues at Duke University, in collaboration with “cloning guru” Kathleen Ottina and David Sabatini at the...which is now available at Addgene. “We called it cloning by mail,” Wood says, and it took them about six...and his colleagues developed the kit for use in screening for pathways that drive resistance to drugs in...Tracing Read How CRISPR Can Be Used in Genome-Wide Screening Browse 28 Hot Plasmid Technologies from 2015 ... cancer screening...
  17. X-CHIME: Context Dependent Germline Knockout in Immune Cells

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    Blog Post
    ... G., Haining, W. N., & Sharpe, A. H. (2019). A CRISPR-Cas9 delivery system for in vivo screening of genes...hematopoietic stem cells with a lentiviral vector containing a gRNA. These transduced stem cells can be implanted...Huang, A. Y., Anekal, P. V., Montero Llopis, P., Haining, W. N., Doench, J. G., & Sharpe, A. H. (2024). ..., Gaudiano, E.F., Al Abosy, R., Freeman, G.J., Haining, W.N., & Sharpe, A.H. (2019). PTPN2 regulates the...
  18. Easing the Protein Purification Process with pCri

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    Blog Post
    ...to improve protein stability and solubility. Determining the best way to express one’s protein of interest...specialists recommend doing some research, notably determining the subcellular localization and the number of...plasmids uses the same restriction enzymes for cloning (see schematic below), enabling a researcher to... in E. coli, the use of a thioredoxin A (TRX)-containing vector can improve disulfide bond formation. ...tags Resources on Addgene.org Find Additional Cloning Kits ...
  19. CRISPR Protocol for Genomic Deletions in Mammalian Cell Lines [Video]

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    Blog Post
    ...finger nucleases to harness non-homologous end joining repair (NHEJ) [1]. Our initial work was with TALENs...haploinsufficiency. Subsequent modifications at the remaining allele within the deletion boundaries may be produced... paired DSBs. This method allows for deletion screening by conventional PCR. Biallelically disrupted cells...transfected cells via FACS, primer validation, and screening by PCR for biallelic deletion clones:    ...paper describes their methods for CRISPR design, cloning, and delivery, as well as their techniques for ...
  20. Tips for a 1st Time CRISPR User (by a 1st Time CRISPR User)

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    Blog Post
    ...randomly chose one of my stable pools. Viruses containing BRAF gRNA (BRDN0000561167 and BRDN0001146266)... 4). The most difficult part of the assay was designing primers flanking my edits in genomic DNA and doing...gRNA-transduced samples (data not shown). Pro-Tips: 1.Designing primers against genomic DNA to amplify the gRNA... vectors and genome-wide libraries for CRISPR screening. Sanjana NE, Shalem O, Zhang F. Nat Methods. 2014...Additional Resources on the Addgene Blog Genome-wide Screening Using CRISPR/Cas9 Deliver Multiple gRNAs at Once...Lentivirus Production Websites Primer3: for Designing Primers UCSC Genome Browser: For eploring genomic...
Showing: 341 - 360 of 975 results