Skip to main content

We narrowed to 803 results for: POR

Showing: 321 - 360 of 803 results
  1. Rosella: A Fluorescent pH-Biosensor for Studying Autophagy

    Type
    Blog Post
    Published
    April 13, 2017, 2:30 p.m.
    ...spectra. DsRed is the permanent fluorescent tag portion of Rosella: it will emit red fluorescence regardless...mechanisms behind autophagy by tracking what’s being transported to the yeast vacuole (i.e. cytosol, mitochondria...2008). Rosella: A fluorescent pH-biosensor for reporting vacuolar turnover of cytosol and organelles in...using a single fluorescent biosensor. Scientific Reports,5(1). doi:10.1038/srep12397. PubMed PMID: 26215030...
  2. Hot Plasmids and Viral Preps - March 2021

    Type
    Blog Post
    Published
    March 23, 2021, 1:15 p.m.
    ...length can and should be varied as it can have important implications for the fusion protein effectivity...upon these original tools that allows for both spatiotemporal protein degradation and quantification of this...et al., 2021.   The AID system relies on a transport inhibitor response 1 (TIR1) expressed under a ...a desired promoter with a specific spatiotemporal expression pattern and an auxin inducible degron (AID...
  3. Hot Plasmids and Viral Preps - January 2021

    Type
    Blog Post
    Published
    Jan. 5, 2021, 2:15 p.m.
    ...in a protein.    Cells expressing an RFP reporter plasmid for recombinase activity were exposed ...interest. However, FACS is unable to spatially and temporally target single cells. Now, Francois St-Pierre’...way to isolate individual cells with unique spatiotemporal phenotypes from large heterogeneous cultures...introduction & resolution of two DSBs in a fluorescent reporter. Find the plasmids here Yongsub Kim’s lab engineered...
  4. Overcoming the Challenges of Lentiviral Production

    Type
    Blog Post
    Published
    Aug. 7, 2018, 12:31 p.m.
    ...viral Rev gene from the packaging plasmid and incorporating it into a fourth plasmid. In addition, the promoter...third generation packaging systems, this system incorporates the Tet-off transcriptional activation system...number of harvests will all impact the titer. Importantly, optimized conditions for one transfer plasmid...producing lentivirus, it is time to titer. One important consideration when titering a lentivirus is the...
  5. Open Resources and Plasmid Tools For Studying C. elegans

    Type
    Blog Post
    Published
    July 18, 2019, 12:55 p.m.
    ...publication.   3’UTRome The 3’UTRs of mRNA are important for post-transcriptional regulation in C. elegans...combination of these methods provides unique opportunities to develop computational methods to better understand...system allows scientists to both spatially and temporally knock-down proteins of interest.  Plasmids for...intersectional strategy using a split intein for refined spatiotemporal transgene control in Caenorhabditis elegans...
  6. Design Tips for Prime Editing

    Type
    Blog Post
    Published
    Jan. 23, 2025, 2:15 p.m.
    ...that meant rereading many of the original papers reporting various prime editing tools. These papers are ...editing application. And optimizing its sequence is important, as prime editing efficiency is affected by the...nucleotides. For longer templates, it is even more important to test different lengths and sequences, as unintended... cellular surveillance. To limit unintended incorporation of the pegRNA scaffold sequence into the genome...
  7. Antibodies 101: Stripping and Reprobing Western Blots

    Type
    Blog Post
    Published
    Aug. 1, 2024, 1:15 p.m.
    ...directly to buffer without a re-wetting step. Important: do not dry your membrane with antibodies on it...the ones shared by Bio-Techne, ThermoFisher, or Millipore Sigma. We’ll share the basic composition of these...Alternatively, companies including ThermoFisher, Millipore Sigma, and Azure Biosystems offer pre-made stripping...your western blot several times — some researchers report up to ten cycles! Just remember that a bit of sample...
  8. Hot Plasmids February 2024

    Type
    Blog Post
    Published
    Feb. 20, 2024, 2:45 p.m.
    ...difficult to genetically edit due to toxicity from electroporation or poor cellular entry with other transfection...PAGE editing with viral sgRNA targeting mCherry reporter (mChe), with co-incubation with assist peptide.... CAP-Mac also robustly expressed fluorescent reporters in green monkeys and cultured human neurons, with...slightly reduced efficacy compared to AA9-X1.1. Importantly, AAV1-X1 is not neutralized by pre-existing antibodies...
  9. Degrading DNA with Cascade-Cas3

    Type
    Blog Post
    Published
    Feb. 11, 2025, 2:15 p.m.
    ....com.   The Cascade complex Cascade is an important component of the CRISPR Cas3 system. Most Cascade... appears to be conserved. This DNA degradation portion can be bypassed by leaving out Cas3 — a tactic ...is pulled through the Cas3. This mechanism is important for Cas3’s biggest trick. Cas3 likes to bluff,... — Cas3 will definitively degrade the targeted portion of DNA using only a single gRNA. Cas3 appears to...
  10. Viral Vectors 101: Voltage Indicators

    Type
    Blog Post
    Published
    Jan. 30, 2024, 2:15 p.m.
    ...sensors are better classified by their fluorescent reporter and the mechanism of their voltage sensing component...rhodopsin proteins were initially evolved for ion transport, not fluorescence, they are not nearly as bright...for penetrating deeper tissues depths (1 mm), important for certain applications such as in vivo tissue...rhodopsin Ace2N and mScarlet. Ace2N quenches a proportion of mScarlet's emission via FRET.  Image from ...
  11. 3D Printing Meets CRISPR Cas9

    Type
    Blog Post
    Published
    Oct. 17, 2017, 12:55 p.m.
    ...this rarely happens. But if you ever have an opportunity to read one of these structure papers – while...function in the human body?” … and probably most importantly… "how do we know this?” Over the past fifteen... nuclease active site wasn’t even close to its reported cleavage site on the complementary DNA strand....model also displays the several Lys/Ala mutations reported by Ian Slaymaker and colleagues to reduce off-...
  12. Fluorescent Proteins 101: Fluorescent Protein Timers

    Type
    Blog Post
    Published
    May 4, 2017, 2:30 p.m.
    ...have been around since 2000 when Terskikh et al. reported the production of dsRed E5. This timer predictably... your experimental setup less cumbersome. 3. Portability across multiple systems Terskikh et al. showed...fluorescent timers that change color from blue to red report on cellular trafficking." Nature chemical biology...Chronology of islet differentiation revealed by temporal cell labeling." Diabetes 58.8 (2009): 1863-1868...
  13. Truncated gRNAs for Regulating Gene Expression

    Type
    Blog Post
    Published
    Jan. 10, 2017, 3:37 p.m.
    ...suffers from several limitations. Perhaps most importantly, most Cas9 orthologs are less well characterized...(1, 3). The gRNA can be further modified by incorporation of an RNA hairpin, such as the MS2 hairpin, ...with nuclease-competent Cas9. An RNA hairpin incorporated into the truncated gRNA recruits a transcriptional...target site. Benefits of truncated gRNAs Importantly, the use of truncated guides has largely been...
  14. PhD Applications After COVID

    Type
    Blog Post
    Published
    Jan. 5, 2023, 2:15 p.m.
    ...in-person portion got canceled, taking advantage of virtual meetings can still be a great opportunity to introduce...course of the last few years: recognizing the importance and benefit of remote and video communication...staff have become a new way to allow you to get important information about the campus even if you can’t...
  15. Tips for arabidopsis transformation

    Type
    Blog Post
    Published
    Oct. 25, 2018, 1:23 p.m.
    ...analyzable transgenic in hand, so it is pretty important to get this process right the first time. I’ll...to transform when they begin flowering. It is important to perform the transformation not long after flowering...cut off the primary inflorescence (the flowering portion of the plant) near the base of the stem. This buys...s time to select for transformants. It’s very important to select multiple T1 plants from each transformation...
  16. SciComm: Taking Science to Elementary and Middle Schools

    Type
    Blog Post
    Published
    July 9, 2019, 12:52 p.m.
    ...has made strong efforts in the last 5 years to incorporate more science and technology into the school curriculum...presentation to their students. I didn’t think of this opportunity as coming from networking at the time, but that...presentation because, in my opinion, it was more important to communicate the applications of CRISPR over...use it? This last section was arguably the most important, and it was a little worrisome for me since bioethics...
  17. Isolating Genomic Regions of Interest with the CRISPR System

    Type
    Blog Post
    Published
    May 30, 2019, 12:44 p.m.
    ...expression plasmid. Experimental use Since the initial report describing CRISPR-mediated purification of a specific...including Protein A, 1xFLAG, 2xAM, and HA have been reported, as well as affinity purification with an anti-Cas9...this technique, researchers have begun to make important discoveries in various biological fields. In 2015...chromatin immunoprecipitation (enChIP)." Scientific reports 3 (2013): 3171. PubMed PMID: 24201379. PubMed Central...
  18. An Introduction to Adenovirus

    Type
    Blog Post
    Published
    Oct. 3, 2023, 1:15 p.m.
    ...toward saying that host-virus interactions are an important part of the biology of adenoviruses (AdVs). AdVs... Although host-virus interactions likely seem important for any virus, we will see that they are very ...(Tollefson et al., 1996) – cell death has been reported when using vectors, and immune inactivation of...Adenovirus Tales: From the Cell Surface to the Nuclear Pore Complex. PLoS Pathog, 11(6), e1004821. https://doi.org...
  19. Better Dyeing Through Chemistry & Small Molecule Fluorophores

    Type
    Blog Post
    Published
    Sept. 8, 2016, 2:30 p.m.
    ...transcyclooctene–tetrazine)– Nonnatural amino acids can be incorporated into a protein structure and then used with ...attach a fluorophore at the specific site of incorporation (Figure 1d). Fluorogen activating proteins...excess dye from the sample, which is particularly important for samples where washing is difficult, such as...inside living cells. We recently discovered that incorporation of four-membered azetidine rings could substantially...
  20. CRISPR 101: Making a Knock-In Cell Line

    Type
    Blog Post
    Published
    Dec. 22, 2022, 2:15 p.m.
    ...typically require an exact DNA sequence to be incorporated at a precise genomic location, with little to...template for repair, which will result in the incorporation of your sequence, a.k.a a knock-in! So how does...higher HR frequencies than quiescent cells. It is important to know that HR is often mutated in cancer cells...molecule is used as the template, you need to incorporate homologous sequence to the right and/or left ...
  21. Interview: Hodaka Fujii on enChIP, New CRISPR Tools, and More

    Type
    Blog Post
    Published
    Dec. 2, 2014, 7:23 p.m.
    ..., as well as the Editorial Board of Scientific Reports and PLoS One. Additionally, you are involved in...is being involved in the scientific community important to you and your lab? Fujii: I first knew Addgene...interact with each other, which is critically important, especially for young researchers. It was a really...technologies. Majority of them are eager to just "import" technologies developed abroad, so it's a little...
  22. An Inside Look into Addgene's Dev Team

    Type
    Blog Post
    Published
    Jan. 23, 2020, 2:45 p.m.
    ...happening at Addgene under the hood. A significant portion of our development may not be visible to users ...but you have definitely reaped the benefits. We support everyone that works with Addgene in some way. For...the development process at Addgene. Diversity supports our innovation Our software development team is...are reusable software components that can be incorporated into software. You can think of these libraries...
  23. Deciphering the Mysteries of Behavior with Viral Vectors

    Type
    Blog Post
    Published
    Sept. 17, 2019, 12:40 p.m.
    ...Geneva (Creed et al., 2015) used optogenetics to support these existing findings by controlling neurons ... animal is placed into a tank of water with no support from below or anything to hold on to. In general..., 2007). A study from 2014 (Bahi et al., 2014) supports the relevance of BDNF in depression. The researchers...of viral vectors to fine tune gene expression temporally and spatially, exciting times are ahead for behavioral...
  24. What's Your Organism? Expanding Genomic Tools via the NSF EDGE Program

    Type
    Blog Post
    Published
    May 2, 2019, 12:41 p.m.
    ...number of systems that can be studied by providing support "for development of tools, approaches, and infrastructure...great for studying parenting strategies and make important ecological indicators since species live in water...Aiptasia - algae Breviolum minutum symbionts are important models for solutions to the coral reef crisis.... interesting biologically. They have economic importance as harmful weeds. The parasitic fusion is such...
  25. CRISPR 101: Any Base Transversion Editors

    Type
    Blog Post
    Published
    April 1, 2025, 1:15 p.m.
    ...synthesis polymerase known to preferentially incorporate A bases across from abasic sites. This approach...collaborative team from the David Liu and Dali Li labs reported a similar tool shortly thereafter, using mouse...a template — in this case, encouraging it to incorporate a new base across from the abasic site before...Transversion Editors Read about four base editor reporters Resources on Addgene.org Browse CRISPR plasmids...
  26. Hot Plasmids Spring 2024

    Type
    Blog Post
    Published
    May 23, 2024, 1:15 p.m.
    ...2024). They developed a new prime editor that incorporates La’s N-terminal domain, PE7 (Figure 2).  PE7...high microglia-specific gene expression when incorporated in an AAV vector (Figure 5). Efficiency and ...including in human retinal organoids and live mice. Importantly, REVeRT avoids the introduction of extraneous...associated with viral vector-based therapies. REVeRT supports advanced gene expression regulation, enhancing...
  27. Hot Plasmids - November 2023

    Type
    Blog Post
    Published
    Nov. 14, 2023, 3:35 a.m.
    ... editing efficiencies in vitro and in vivo. Incorporating reverse transcriptase (RT) variants, PE6a and...., 2023, reused under CC-BY 4.0 License. Importantly, even commercial antibodies can be tethered on... more. For added precision, the authors also incorporated LOV-Turbo into TransitID experiments.  Find ...in light-regulated LOV-Turbo enables precise spatiotemporal control of proximity labeling in living cells...
  28. Using Video to Share Your Science: We Share Science

    Type
    Blog Post
    Published
    Nov. 3, 2016, 2:30 p.m.
    ...research. Open access journals also provide many opportunities. But these continue to rely on printed journal...years. Which leads to the question of how we can support researchers as they try to keep up with the growing...total view count and videos published, YouTube reported a total of 865,995 views for the 926 video abstracts...the video abstract genre offers a low-barrier opportunity for researchers to leverage the video medium ...
  29. Plasmids 101: Broad Host Range Plasmids

    Type
    Blog Post
    Published
    April 11, 2024, 1:15 p.m.
    ...methyltrophus, Methylococcus methanolicus, Methylosinus trichosporium, Myxococcus xanthus, Neisseria spp., Paracoccous...Paracoccus denitrificans, Pasteurella multocida, Porphyromonas gingivalis, Proteus mirabilis, Providencia spp...Xanthomonas campestris   In addition to incorporating broad host range replicons, recombinant vectors...can be expressed. For example, scientists can incorporate interchangeable antibiotic resistance cassettes...
  30. Viral Vectors 101: Pseudotyping

    Type
    Blog Post
    Published
    April 20, 2021, 2:30 p.m.
    ... envelope allows the lentiviral vector to be transported retrograde and also has higher neuronal transduction...rabies glycoprotein. The glycoprotein will be incorporated into the replicating rabies virus envelope, ... lentiviral vectors enables retrograde axonal transport and access to the nervous system after peripheral...0042 Takeuchi Y, Liong SH, Bieniasz PD, Jäger U, Porter CD, Friedman T, McClure MO, Weiss RA (1997) Sensitization...
  31. The Advances Behind The World's First Personalized CRISPR Treatment

    Type
    Blog Post
    Published
    Sept. 16, 2025, 1:15 p.m.
    ...impressive on a larger scale, too. The first paper reporting genome editing by CRISPR in mammalian cells appeared...reviewed in Lander, 2016). The first base editor was reported three years later in 2016 (Komor et al., 2016)...editing efficiency. The V106W mutation was an important addition. Improved activity of adenine base editors...rigorously safety tested and reused, only the RNA portion targeting base editors to problematic mutations...
  32. CRISPR 101: Validating Your Genome Edit

    Type
    Blog Post
    Published
    Nov. 3, 2022, 12:15 p.m.
    ... in advance Before validating your edit, it’s important to know a few things about your target cells and...goal is to generate a clonal cell line, so it’s important to verify that you won’t need to screen hundreds...in silico prediction analyses like CRISPRitz or CRISPOR can help narrow down the list of sites where off... integration into the guide RNA selection tool CRISPOR. (2016) Genome Biol 17: https://doi.org/10.1186...
  33. Plasmids 101: Restriction Cloning

    Type
    Blog Post
    Published
    Feb. 18, 2016, 3:42 p.m.
    ...some DNA during the gel purification step, it is important to digest plenty of starting material. We recommend...be cut with both enzymes, and therefore it is important that the digest go until completion. The time ...running a gel for purification purposes it is important to have nice crisp bands and to have space to ... your favorite gel purification method, it is important to determine the concentration of recovered DNA...
  34. Plasmids 101: Dimers and Multimers

    Type
    Blog Post
    Published
    Jan. 10, 2023, 2:15 p.m.
    ...long-read sequencing techniques, such as Oxford Nanopore sequencing or PacBio SMRT sequencing, (which differ...long-read sequencing (1-25 kb), such as Oxford Nanopore sequencing or PacBio SMRT sequencing. These longer... plasmid multimerization troubleshooting tips. Portions of this figure were made with BioRender. ...AE. Generic plasmid DNA production platform incorporating low metabolic burden seed-stock and fed-batch...
  35. Antibodies 101: Validation

    Type
    Blog Post
    Published
    March 24, 2022, 1:15 p.m.
    ...Reproducibility First, let’s review why validation is so important. Antibodies are a critical component of the researcher...or plan your own validation experiments, it’s important to know what you are aiming to achieve. In general...as whole cell lysate or tissue sections. It is important to confirm that your antibody is not binding to...proteins bound to the target protein, so it’s important to understand if protein:protein interactions ...
  36. Sequencing Options for CRISPR Genotyping

    Type
    Blog Post
    Published
    Oct. 4, 2016, 2:30 p.m.
    ... the University of Cambridge. One of the most important steps in the CRISPR experimental process is validating...silico prediction. These techniques differ in important ways, but can also complement one another by providing... unbiased methods, high background BLESS Not reported Cell-based (in vitro) Can be used on tissue from...senstive to time since cell fixing HTGTS Not reported Cell-based Identifies translocations Limited by...
  37. Quick Guide to All Things Lentivirus

    Type
    Blog Post
    Published
    March 21, 2017, 2:30 p.m.
    ...or electrical (electric current forming membrane pores) transfection. These techniques are still used and...has been removed, Rev (which facilitates nuclear export) is expressed from a separate plasmid, and the ...you clone your gene of interest into and is an important feature for your experiment; it must be chosen...using them.   Regarding biosafety, it is also important to be aware that lentiviral particles are a powerful...
  38. Hassle-free 96-well Format Epitope Tagging Using Cas9 Ribonucleoprotein

    Type
    Blog Post
    Published
    June 28, 2018, 3:01 p.m.
    ...Desktop Genetics .For ssODN design, remember to incorporate PAM-blocking mutations (e.g. convert the NGG ...into cells. Optimization of delivery methods (electroporation, lipofection etc) is the most crucial aspect...includes selection of transfection buffer and electroporation pulse program to achieve high transfection ...many factors. Some of these include: Most importantly, the crRNA should cut near the insertion site...
  39. Fluorescent Proteins 101: Monitoring Cell Mobility Using Fluorescent Proteins

    Type
    Blog Post
    Published
    Aug. 15, 2017, 1:24 p.m.
    ... methods allowed immunologists to develop a spatiotemporal view of an immune response, but the study of...transgenic mice expressing fluorescent protein reporter constructs in the immune lineage. By specifically...than the standard Ti:Sapphire laser. It is also important to finely tune the excitation wavelength as it...using 2-photon microscopy as this hasn't been well reported for many fluorescent proteins. Additional fluorescent...
  40. Live and Let Dye: Self-Labeling Protein Tags

    Type
    Blog Post
    Published
    April 16, 2024, 1:15 p.m.
    ...amino acids to directly incorporate a fluorophore in your protein or to incorporate an alkene to be labeled... self-labeling tools: Tetracysteine: The first reported chemical labeling tag, from Roger Tsien’s lab ...collection. CLIP-tag: Also in 2008, Kai Johnsson’s lab reported another AGT-based tag named CLIP-tag, which reacts...
Showing: 321 - 360 of 803 results