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We narrowed to 754 results for: REV

Showing: 161 - 200 of 754 results
  1. A History of Genome Engineering in Popular Culture

    Type
    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...
  2. 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...
  3. Fluorescent Proteins 101: Monitoring Cell Mobility Using Fluorescent Proteins

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    Blog Post
    ...real time. Two-photon microscopy was the next revolution in cell imaging, giving researchers the ability...(intravital imaging) studies it’s enabled are revealing the cellular behaviors that mediate adaptive and...proteins (protein that undergoes light-induced irreversible photoconversion from green fluorescence to red... 1. Peters, Nathan C., et al. "In vivo imaging reveals an essential role for neutrophils in leishmaniasis.... Egen, Jackson G., et al. "Intravital imaging reveals limited antigen presentation and T cell effector...
  4. Cancer and the Immune System: Deciphering the Relationship

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    Blog Post
    ...immune cells harvested from patients and thereby prevent cancer cells from using this receptor to evade ...immunotherapies currently under study. Check out this review for an in-depth look at a variety of up and coming...monoclonal antibody-based therapeutics." Nature Reviews Cancer 15.6 (2015): 361-370. PubMed PMID: 25998715...Lloyd J. Old. "Antibody therapy of cancer." Nature Reviews Cancer 12.4 (2012): 278-287. PubMed PMID: 22437872...Cancer immunotherapy via dendritic cells." Nature Reviews Cancer 12.4 (2012): 265-277. PubMed PMID: 22437871...
  5. A Primer on Optogenetics: Introduction and Opsin Delivery

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    Blog Post
    ...optogenetics. Annual review of neuroscience. 2011;34:389-412. doi: 10.1146/annurev-neuro-061010-113817....effectiveness of your optogenetic manipulations (though a reviewer will probably ask for electrophysiology data too...best suit your specific experiment. Consult these reviews for a discussion of the different variants [1, ...underlying brain disease in animal models. Nature reviews Neuroscience. 2012;13(4):251-66. doi: 10.1038/nrn3171...
  6. Tag Your Favorite Yeast Genes with Ease

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    Blog Post
    ...integrate protein tags into the genomes of S. cerevisiae and S. pombe. The protocol is surprisingly simple... in yeast. These tagging vectors are based on previously described pFA6a-link vectors and include a Kan...assessed many of these fluorescent tags in S. cerevisiae, looking at their performance in categories such...a complimentary set of plasmids for use in S. cerevisiae, with the additional benefit of multiple selection...
  7. A Needle in a Base-Stack: Cas9 Structural Biology

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    Blog Post
    ...Mechanisms. Annual Review of Biophysics, 46, 505–529. https://doi.org/10.1146/annurev-biophys-062215-010822...lobes are inactive in the absence of guide RNA, preventing Cas9 from making off-target cuts.   Pro tip! ...CRISPR–Cas immunity and genome editing enzymes. Nature Reviews Microbiology, 20(11), 641–656. https://doi.org/...High-throughput profiling of off-target DNA cleavage reveals RNA-programmed Cas9 nuclease specificity. Nature...
  8. Multifunctional Neural Fibers: Modulation from Gut to Brain

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    Blog Post
    ...brain-visceral organ signaling. The problem  Previously, there were very few tools available for monitoring...   To develop these fibers, the labs looked at previous implementation of optogenetic tools, calcium sensors...stimulation using NeuroStack and the fibers as previously described, then measured electrophysiological...optoelectronics for neural interfaces. Chemical Society Reviews, 48(6), 1826–1852. https://doi.org/10.1039/C8CS00710A...
  9. Summer SciComm Series: A PhD in Science Communication

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    Blog Post
    ...real, peer-reviewed study. The second group read the same abstract but with the names reversed, meaning ...looked at how people perceive and evaluate peer-reviewed sources of information if those sources affirm...meaning that the findings of the study were also reversed. The third group read a version of the abstract where...
  10. 22 Hot Plasmid Technologies from 2014

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    Blog Post
    ...of the fluorescent protein dsRed that changes irreversibly its color from green to red when it is oxidized...et al., PLOS One 2013 Oct 7;8(10):e76117. Irreversible peptide-peptide ligation using SpyLigase Building...excitation of neurons. The paper describes five previously unknown channelrhodopsins from different species...designed two vectors for use in conditional and reversible gene silencing in RNAi transgenic mouse models...Jesse Rinehart and Dieter Söll at Yale University previously changed the way researchers can explore important...engineering demonstrate improved efficiency over previous reports. For additional information on using ...
  11. Cas13d: Small RNA-targeting CRISPR enzymes for transcriptome engineering

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    Blog Post
    ...identified have little sequence similarity to previously identified Cas13a-c orthologs, but they do include...system. Since Cas13d is functionally similar to previously discovered Cas13 enzymes - what makes these orthologs...80% for other Cas13a and Cas13b effectors. Like previously characterized Cas13 enzymes, CasRx also displays... manipulate RNA species through exon skipping. Previous CRISPR exon-skipping approaches used two guide...
  12. Plasmids 101: Inducible Promoters

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    Blog Post
    ... pR, preventing expression of a reporter gene. When light is present, YFI is inactive, preventing repressor...inactive because a bound repressor protein actively prevents transcription. Once an inducer binds the repressor...activation. In this system, the activator rtTA (reverse tetracycline-controlled transactivator) is normally...
  13. Luminescent Imaging with Nano-lanterns

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    Blog Post
    ...and exhibited 3-5 fold increased brightness over previous BRET probes, with sufficient signal for in vivo...increased sensitivity and faster imaging compared to previous publications. They also developed calcium, cAMP...described in Suzuki et al. improve the brightness of previous Nano-lanterns by 2-4 fold and permit five-color... its substrate furimazine. In addition to the previously described applications, the enhanced signal of...
  14. Pooled CRISPR Libraries Offer Genome-Wide Control for Large-Scale Functional Screens

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    Blog Post
    ...lot of trial and error.” The structural details revealed two exposed RNA loops, which Konermann recognized...of all, the Cas9s can be turned on and off, to reversibly activate or repress genes of interest. They also...in your experiments, Addgene recommends that you review the steps for how to use pooled lentiviral CRISPR... CRISPR-Cas9 complex. Konermann S, Brigham MD, Trevino AE, Joung J, Abudayyeh OO, Barcena C, Hsu PD, Habib...
  15. Fluorescent CRISPR Reporters: SRIRACCHA and GEmCherry2

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    Blog Post
    ...reporters in the near future.  SRIRACCHA (stable, but reversible, integrated reporter for assaying CRISPR/Cas-...target region into the N-terminus of mCherry. To prevent alternative start site initiation, the lab removed... this one mutated methionine was not enough to prevent alternative initiation, so they mutated the methionines..., Davidson NO, Madison BB (2017) A stable but reversible integrated surrogate reporter for assaying CRISPR...
  16. Plasmids 101: Cre-lox

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    Blog Post
    ...In previous posts for our Plasmids 101 series, we examined a number of important plasmid elements – promoters...and the region of DNA between the loxP sites is reversed.   Deletion: If the sites face in the same direction... cassette) upstream of a gene of interest will prevent gene expression in the absence of Cre. In the presence...recombination event in a single system. The Saccharomyces cerevisiae FLP-FRT recombination system is another site-...
  17. New Tool for Lineage Tracing: The ClonTracer Library

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    Blog Post
    ...treatment regimen and were not preexisting. This was previously debated in the cancer field and was difficult...be amplified using the same sets of forward and reverse primers). The abundance of a particular barcode...replicate; prior to treatment, there are small (previously undetectable) populations of cancer cells that...that combination treatment with multiple drugs reveals even smaller preexisting populations with resistance...
  18. 6 Tips for Grant Writing

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    Blog Post
    ..., you will need to correct it). It’s easy for reviewers to spot when an application is rushed (whether...that you ask a PI or mentor (your supervisor/ a previous supervisor / someone else in the department) to... times and will have useful advice about what reviewers in your area are looking for. Remember though,...for grant success The two most important things reviewers will be looking for in your research proposal ...
  19. A Look Back at One Year of Plasmid Sharing for COVID-19 Research

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    Blog Post
    ...low cost and quick point-of-care diagnosis kits (reviewed in Tsang and LaManna, 2020). To see even more ...uses loop-mediated isothermal amplification after reverse transcription (RT-LAMP) and a colorimetric readout...completed in just 45 minutes. The team deposited the reverse transcriptase, protease, and Bst polymerase constructs... this toolkit include ones for expressing MMLV reverse transcriptase and Taq polymerase that can be used...
  20. Split Fluorescent Proteins for Studying Protein-Protein Interactions

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    Blog Post
    ...fluorogen A split fluorescent reporter with rapid and reversible complementation. Tebo et al. Nat Commun. 2019...options. While the BiFC interaction is typically irreversible and requires some time for chromophore maturation...maturation, splitFAST displays rapid and reversible complementation. TagBiFC (split HaloTag) provides maximum...important for their interaction. You can read our previous blog post for more on BiFC principles and experimental...
  21. Transferable Skills Guide: Managing a Team

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    Blog Post
    ...new managers and I had a “Eureka” moment while reviewing the results of my Myers-Briggs test:  my undergrads...motivation, but he didn’t want to spend hours reviewing papers to piece together the best protocol;  he...associate feedback with end-of-the-year performance review, but feedback should be given throughout the year...References Becoming the boss. Harvard Business Review, January 2007. Three Rules for Managing a Successful...
  22. Viral Vectors 101: Voltage Indicators

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    Blog Post
    ... are voltmeters for cells! In this blog we will review how these indicators work, their general applications...of the membrane, a concern with several of the previously described systems. Several adaptations of this...   Viral Vectors and Voltage Indicators As previously mentioned, cellular voltage is measured at the... Components of the types of voltage indicators reviewed.   References and Resources   References ...
  23. Polymerase Chain Reaction Overview and Applications

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    Blog Post
    ...then dropped to a range in which the forward and reverse primers are stable. At this temperature the primers...can also be used to quantitate RNA levels using reverse transcription-qPCR (RT-qPCR). The first step of...process requires RNA to be converted to cDNA using reverse transcription and the cDNA is subsequently quantified...template is amplified using several forward and reverse primer sets.  Multiple template PCR - multiple...
  24. Multiplexed Capture of Promoter-enhancer 3D Chromatin Structures Using CRISPR

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    Blog Post
    ...broken during cross-link reversal (not shown in diagram). Cross-links are reversed so that DNA fragments ...cells (~5x107). Together, these two requirements prevent the use of CAPTURE with primary cells or rare cell...multiplexed CAPTURE 2.0 largely replicated interactions previously identified with the original CAPTURE method. ...
  25. Plasmids 101: Choosing an Antibiotic Resistance Gene

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    Blog Post
    ... functional copy of your plasmid of interest, preventing this issue. The genes and their antibiotics   ...produces beta-lactamase to degrade amp and therefore prevent cell death. One of the cool things about amp is...susceptible to degradation in agar plates. This prevents satellite colonies from forming while effectively...expressing a protein that directly binds to zeocin, preventing it from binding DNA. Zeocin is an all-in-one ...
  26. CRISPR 101: RNA Editing with Cas13

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    Blog Post
    ...Cas13-based RNA editing system would likely be reversible and would avoid genomic off-targets or indels... RNA knockdown. In initial tests, Cas13b from Prevotella sep. P5-125 (PspCas13b) yielded 62.9% average...editing plasmids here! Future directions Building on previous RNA targeting work with Cas13, REPAIR is the first...edit RNA has multiple advantages, including reversibility and use in non-dividing cells. With the expanded...
  27. Capturing a Moment with Marc Zimmer’s “The State of Science”

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    Blog Post
    ...ambitious, that’s because it is. Zimmer, whose previous books focused primarily on fluorescent proteins...racism and sexism in science, problems with peer-reviewed publications and funding, bioethics in the age...unlikely to be surprised by many of Zimmer’s revelations. The issues he discusses have been making the...of his book today--the day you are reading this review--in the current period of rapid flux, the chapter...
  28. Uncovering Ancestral Bias in CRISPR Research

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    Blog Post
    ...within a CRISPR guide can prevent the guide from binding to the genome or prevent Cas9 from cutting, both...genome could affect their analysis. Their work revealed that cell lines from individuals of African descent...Perturbation Platform to modify the CRISpick algorithm to prevent guides from being designed that target regions ...
  29. Using AAV for Neuronal Tracing

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    Blog Post
    ...there are several parallel mechanisms in place (for review see Maday et al., 2014). It is currently unclear...neurotoxicity, and is lethal if left untreated (for review see Dietzschold et al., 2008). Herpes Simplex Virus...neuronal connection via a single synaptic step, thus preventing further widespread expansion of RABV. This improvement...combination with conditional transgenic mice, to reveal not only the anatomy of neuronal connections, but...Cell type-specific genetic and optogenetic tools reveal novel hippocampal CA2 circuits. Nat Neurosci 17...
  30. 15 Hot Plasmids from 2017

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    Blog Post
    ...a different mechanism - the PhoCl protein is irreversibly cleaved when exposed to light. Robert Campbell...marker-free coselection, analogous to methods previously used in C. elegans, targets the sodium/potassium... the point mutations created by Agudelo et al. prevent ouabain binding to ATP1A1 but do not compromise...for TZAP, a Kruppel-like zinc finger protein (previously named ZBTB48) in regulating the upper-bound of...engineering that enables new applications, such as reversing the effects of dCas9 binding to a genomic locus...
  31. Plasmids 101: Codon usage bias

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    Blog Post
    ...correlated with codon bias in both E. coli and S. cerevisiae. Protein folding - If a protein is encoded by...Gene optimization mechanisms: A multi‐gene study reveals a high success rate of full‐length human proteins..."Evolutionary conservation of codon optimality reveals hidden signatures of cotranslational folding." ...26186290. PubMed Central PMCID: PMC4794256. This review provides a great overview of codon usage bias ...
  32. QC Sequencing Technologies at Addgene

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    Blog Post
    ...Previously, we provided a general overview of the QC process at Addgene. All plasmids go through this...the expected sequence, the QC team can manually revisit the assembly in a program called Geneious. Within...the assembly. Geneious will show how reads align, reveal multiple contigs, and highlight sequence identities...mismatch or indel flags the sequence for manual review by one of our QC team members. This process saves...
  33. Healthcare Consulting: A Door to the Business of Life Sciences

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    Blog Post
    ... such challenges involves using knowledge from previous consulting experiences, educational training, ...productivity, and many have mechanisms in place to prevent the burden from getting overwhelming. These mechanisms...teams are facing a crunch, and using lessons from previous cases to better staff future teams. As with any...how much my scientific background, training in reviewing literature, and critical analyses skills were ...
  34. How to Be an Excellent Trainee

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    Blog Post
    ...participant in the training. In this blog we will review the preparation and planning you can do to build...different way of doing something then you’ve done previously) you can bring those questions to your training...questions throughout training, while others prefer to review their notes, process what they’ve just learned,...Show up prepared and take training seriously, as reviewed above. Offer to help clean up and/or make necessary...
  35. Plasmids 101: E. coli Strains for Protein Expression

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    Blog Post
    ...In a previous Plasmids 101 blog, we reviewed the salient features of several popular strains of E. coli...over-expressing a foreign protein in E. coli. We will review the potential pitfalls of recombinant protein expression... problem for toxic protein products, which can prevent the culture from reaching the desired density within...
  36. Transferable Skills Guide: Creativity

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    Blog Post
    ...we give people the opportunity to speak out and prevent groupthink? Here are some ideas that I have found...a member of our Business Development team would review it. This survey generated 26 ideas, over half of...mistakes that kill your productivity. Harvard Business Review. Retrieved January 14, 2022, from https://hbr.org... spur innovation on your team. Harvard Business Review. Retrieved January 14, 2022, from https://hbr.org...
  37. CRISPR 101: Which Cas9 Do I Choose for My CRISPR Experiment?

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    Blog Post
    ...containing the desired edit adjoined to the sgRNA, a reverse transcriptase, and a nCas9. While this system has... Fig. 2: Prime editor engaging target DNA. The reverse transcriptase polymerizes DNA onto the target strand...successfully in experiments and published in peer reviewed journals. If you need to generate a new sgRNA ...your experiment. Keep an eye out for our upcoming review of these options in our CRISPR 101 series!  References...
  38. Supporting Reproducibility with a Connected ELN

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    Blog Post
    ... the Wisconsin research community were to: (1) prevent vendor lock in by making it easy to get data out... to a selected Slack channel for discussion and review. It’s also possible to capture Slack conversations... and/or import and convert it into RSpace. The reverse flow is also supported, so it’s possible to re-...making research data available for public access, review, and query. Gates Open Research and Wellcome Open...
  39. CRISPR-mediated Plant Base Editors

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    Blog Post
    ... limited to 0-5%. This blog post covers a brief review of different basic BE technologies and their adaptation...making an original C-G pair converted to T-A, or reverted to the original C-G by base excision repair mediated... by introducing a point mutation (H193Y). The reversion of this mutation by an adenine base editor would...in rice. In Genome Engineering: The CRISPR-Cas Revolution, Cold Spring Harbor Laboratory (2018). Additional...
  40. Multiple Plasmids at a Low Price: Kits from Addgene

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    Blog Post
    ...unlikely to be found in your gene of interest) and prevent incorporation of extensive sequences used for cloning...Translation of the standardized leader peptide prevents secondary structures in the mRNA encoding your...genes from a single transcript, or if you want to prevent read-thru transcription from resulting in the production...Adaptation of Enterococcus faecalis to daptomycin reveals an ordered progression to resistance." Antimicrobial...
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