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Showing: 161 - 180 of 711 results
  1. CRISPR 101: Cytosine Transversion Editors

    Type
    Blog Post
    ...your vocabulary! A brief review of base editing tools First, let’s briefly review how CRISPR-derived base...The first base editors revolutionized CRISPR gene editing. Cytosine base editors (CBEs) and adenine base...the pyrimidine bases (C and T). (Check out our previous post on these editors for more details on how ...also called apurinic or apyrimidinic sites and abbreviated as AP sites. To explore this further, the team...bound, keeping the two DNA strands separate and preventing repair based on the complementary strand. This...
  2. Hot Plasmids December 2018 - C. elegans RNAi, TurboID, Detecting Viral Outbreaks, and Protein Binding Specificity Tools

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    Blog Post
    ...sequencing, revealing that they bind to a much larger subset of protein motifs than previously thought. ...T7 terminators adjacent to the T7 promoters to prevent the incorporation of non-specific nucleotides into...proteomics in model organisms in which it was previously not an option, including Drosophila and C. elegans...Pubmed PMID: 30370338.  SH3 domain collection reveals novel peptide ligand motifs Article contributed...
  3. Choosing the B(right)est Fluorescent Protein: Aggregation Tendency

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    Blog Post
    ...Advanced microscopy, University of Amsterdam. The previous two posts in this series described a practical...between the FPs interfere with native interactions, preventing proper localization in these assays. However,...tendency in living cells. Strikingly, the OSER assay reveals that tagRFP does not act as a true monomer in cells... cells (Constantini, 2012), whereas it was previously concluded to be monomeric based on gel filtration... that are relevant for your research. This will reveal the performance of fluorescent proteins in your...
  4. Writing Scientific Manuscripts: Literature Searching, Reading, & Organizing

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    Blog Post
    ... titles, authors, year, narrow by article type (review, patent, clinical study, research article etc)....on a new literature search, try to find a recent review article to give you an overview of the topic and...information dense and since it continually builds on previous studies, the reader always enters in the middle...introductions should be fairly focused. Consult a review article for a broader scope of what’s going on ...performed that could influence the results? The peer-review process is not perfect, so even though it is science...
  5. CRISPR 101: Anti-CRISPR Proteins Switch Off CRISPR-Cas Systems

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    Blog Post
    ...In this study, the labs found that anti-CRISPR prevents Cas9 activity in HEK293 by reducing editing from... Acr samples. Acr proteins can also be used to prevent dCas9 tethering to DNA. Since these early anti-... AcrIIC2 interactions with Cas9 interferes and prevents the correct assembly of the crRNA-Cas complex ...binds to the HNH endonuclease domain of Cas9 and prevents target DNA cleavage (Harrington et al., 2017)....vectors. Having a way to shut off CRISPR-Cas systems prevents the off-target effects and cytotoxicity that result...
  6. Rabies and Neuronal Tracing

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    Blog Post
    ...inputs. This study revealed that these neurons received more inputs than was previously thought. The differences...subsequently higher and higher order neurons doesn’t reveal network connections in a useful way, but rather... tracing is a powerful tool that can be used to reveal brain circuitry, and continue to contribute answers..., Berninger B. Retrograde monosynaptic tracing reveals the temporal evolution of inputs onto new neurons...
  7. CrispyCrunch: High-throughput Design and Analysis of CRISPR+HDR Experiments

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    Blog Post
    ...explosion of software tools accompanying the CRISPR revolution. (See omictools for even more.) However, none...step of mutating guide sequences in a way that prevents re-cutting but does not disrupt gene expression...CrispyCrunch is how it mutates guide sequences to prevent re-cutting of the sequence inserted by HDR. Although...mutating a single base pair may not be enough to prevent re-binding. Lastly, the sequence inserted by HDR... target regions Design donor RNA Design primers Review and order reagents Perform your wet lab experiment...
  8. Deep Dive: qPCR

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    Blog Post
    ...and I recommend Bustin, 2017 for a more in-depth review.)  Your amplicon should be between 70-200 bp long...ideally located close to either the forward or the reverse primer.  There is a list of useful primer design...efficacy with a standard curve. If relying on previously-generated validation data, be aware that different...transcripts. However, adding too many reagents can prevent your reaction from reaching the plateau stage after...sample compared to your control. But as we said previously, just because it’s used often doesn’t mean it...York 2014Bustin S; Huggett J. qPCR primer design revisited. Biomolecular Detection and Quantification. Volume...
  9. Deep Dive: Fixing and Permeabilizing for Immunofluorescence

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    Blog Post
    ...thus structural epitopes, but can reveal linear epitopes previously hidden within the protein. Created...cross-linking can block the epitope of some targets, preventing your primary antibody from binding (Fig.1). The...cleaner results by not permeabilizing as you’ll prevent binding to any target protein that is still on ...preserve sample morphology, while organic solvents can reveal otherwise hidden epitopes. However, keep in mind...
  10. Plasmids 101: Stringent Regulation of Replication

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    Blog Post
    ...always to the same extent. As described in our previous Origin of Replication post, DNA replication is...bacteria Before looking at an example plasmid, let's review how E. coli normally replicate their chromosomal...sequence forming this pseudoknot, so its binding prevents the mRNA from folding and blocks RepZ translation...high levels of the lncRNA bind to RepZ mRNA and prevent this pseudoknot from folding, blocking replication...bacterial plasmids. Microbiology and Molecular Biology Reviews: MMBR, 62(2), 434–464. https://doi.org/10.1128/...
  11. Deciphering the Mysteries of Behavior with Viral Vectors

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    Blog Post
    ... unraveling the mysteries of behavior. We’ve previously discussed some of the general considerations ....  What’s involved in locomotor sensitization? Previous research has shown that regions such as the nucleus...transmission leads to locomotion sensitization. (for review see van Huijstee & Mansvelder  2014). Scientists...the locomotion of the animal. This confirms the previously suggested inhibitory mechanism of locomotor sensitization... times are ahead for behavioral neuroscience to reveal insights into the complex relationship between ...
  12. Advancing Biology with Zebrafish: Genetic Tools for Developmental Studies and More

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    Blog Post
    ...experimental treatment can be monitored. This can reveal previously unknown functions for genes, and lays the ...of the zebrafish genome was published in 2013, revealing that about 70% of human genes have a counterpart... ways. Zebrafish mutants In the 1990’s, two revolutionary large-scale random mutagenesis screens produced...unlocked novel research into genetic compensation, a previously unknown mechanism of gene regulation (El-Brolosy...
  13. Data Freedom: The Expansion of Data Sharing in Research Publications

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    Blog Post
    ...publications. The policy was not an overnight revelation, rather it was the result of consultations between... rationale includes increasing the ability of reviewers (and, once published, anyone) to detect possible...apply different or novel tools and assumptions to reveal findings that the originator was oblivious to, ...called Scientific Data, which aims to act as a peer-reviewed repository for “scientifically valuable” datasets...or table, clicking on the published chart could reveal the underlying data and allow other analyses “on...
  14. CRISPR 101: Homology Directed Repair

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    Blog Post
    ...Saccharomyces cerevisiae. Paques F and Haber JE. Microbiology and Molecular Biology Reviews (1999). PubMed...repair and genome engineering CRISPR-Cas9 has revolutionized the genome engineering world and made targeted... disrupting one or both of these sequences. To prevent re-cutting and the resulting mutations after an...transcribes RNA encoding your repair template, then uses reverse transcriptase to generate the complementary ssDNA...
  15. SARS-CoV-2/COVID-19 Detection Methods Based on CRISPR/Cas

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    Blog Post
    ...gene are amplified. RPA reactions also contain reverse transcriptase to produce cDNA. Isothermal amplification...are designed, each binding to one strand of the reverse-transcribed target sequence that are present close...with 9V battery Approach :This preprint uses a previously developed method to detect SARS-CoV-2 in the ...samples. First, RNA is extracted and subject to reverse transcription. This is then amplified by PCR using...detect fluorescence upon cleavage. Highlights: Reverse-transcribed RNA samples are amplified by PCR instead...
  16. Transferable Skills Guide: Time Management

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    Blog Post
    ...s post and give it a final read Browse list of previous depositors from Boston University Contact Dr. ...that post from Eric before doing anything else. Preventing procrastination Even if you’ve done all the prioritizing...planning in the world, procrastination can easily prevent you from making progress on a task. For instance...to go sit in the tissue culture hood may have prevented me from splitting cells until late in the day ...podcasts. JUST GET STARTED - One Harvard Business Review article on procrastination recommends testing out...
  17. Thoughts on the Future of Research 2015 Boston Symposium

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    Blog Post
    ...lack of complete information does not, however, prevent us from identifying problems with the structure...take on opportunities to do some blogging, write reviews, or write for a university publication, improving...was on diversity in academic research. As during previous panels, speakers Moon Duchin, Rafael Luna, Joan... need some way of capturing, quantifying, and preventing this type of failure. Final thoughts The FOR ...Additional Resources The Postdoctoral Experience Revisited. PubMed PMID: 25590106. Paula Stephan’s Book -...
  18. Easi-CRISPR: Generating Knock-In and Conditional Mouse Models

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    Blog Post
    ...efficiency of 30-60%. This is much more favorable than previous methods yielding 1-10% knock-in. Read on to learn...transcription, and use the IVT product as a template for reverse transcription to create your ssDNA. Note that the...conditional deletion of exon 6 of Syt1, mimicking a previously made mouse model. To avoid disrupting splice ...separates the gRNA target sequences from their PAMs, preventing re-cutting after editing. How to use Addgene ...Additional Resources on the Addgene Blog Read Our Previous Post on CRISPR Mouse Models Learn about Homology...
  19. A History of Genome Engineering in Popular Culture

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    Blog Post
    ... the University of California, San Diego. The revolution in genetic engineering techniques is a speculation...and just when the Mendelian genetics was being revived by the botanist Hugo de Vries (1896).  In 1928,...Blade Runner (1982). It is a dystopian film that revolves around synthetic humans called replicants which..., and C. In this movie Ethan Hawke’s character revolts against class divide that is created by genetics...prime editor which is a fusion between Cas9 and reverse transcriptase. Using an elongated template + guide...
  20. Troubleshooting and Optimizing a Western Blot

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    Blog Post
    ...transfer worked with Ponceau S staining or other reversible protein staining immediately after your transfer...expecting low amounts of protein, make sure your reversible staining method of choice is appropriately sensitive...transfer buffers. To slow down smaller proteins and prevent them from over-transferring, increase the amount... away the SDS. To speed up larger proteins and prevent them from under-transferring, try increasing the...Technical errors Search online/ask an expert Review protocol videos for a visual guide to good technique...Check transfer with Ponceau red stain or other reversible stain* Roll out all of the bubbles in the...
Showing: 161 - 180 of 711 results