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We narrowed to 584 results for: abo.1

Showing: 41 - 60 of 584 results

  1. New Neuroscience Tool: The iGluSnFR3 Glutamate Sensor

    Type
    Blog Post
    Published
    April 7, 2022, 1:15 p.m.
    ...sensing glutamate using both 1-photon and 2-photon imaging.   Figure 1: 1P and 2P excitation and ...hSynap: Human Synapsin-1 promoter. Good for neuronal expression. hSynap-FLEX: Synapsin-1 promoter, FLEXed for... v857. Image adapted from Aggarwal et al., Figure 1   Increased versatility through two different...expression in Cre-expressing cells. hSynap-FLP: Synapsin-1 promoter, FLP-dependent expression GFAP: Glial fibrillary...Additional Resources on the Addgene Blog Learn about other Fluorescent Biosensors A Practical Approach...

  2. Addgene Depositors Get More Citations

    Type
    Blog Post
    Published
    April 20, 2017, 2:30 p.m.
    ...of publication. Table 1 provides an example calculation of the weights. Table 1: Journal Weighting Example...typically about four times as many as papers without plasmids deposited with Addgene (Figure 1). Even...amassed nearly 2,400 citations in its first four years (1). In addition to publishing in Science, Professor ...(F) Weight (=F/E) (G) Weighted Citations (=C*G) 1 2010 3 Nature  3.3% 10.5%   3.2  9.6 2 2010...website at: http://www.neil-t.com/ .   References 1. Cong, Le, et al. "Multiplex genome engineering using...

  3. 5 Uncommon Ways to Gain Career Skills During an Uncommon Time

    Type
    Blog Post
    Published
    Oct. 20, 2020, 1:15 p.m.
    ...need a job. Start now. Informational interviews are 1:1 discussions with someone who has interesting experiences...conversation builds a relationship for the future and the 1:1 format is good for everyone including those that ...out-of-the-box ideas that might jump start your learning. 1. Create a peer mentoring group We don’t all get the...mentoring group (see above). However, now that we are all so good with video calls, how about trying your hand...blog or podcast, initiated and maintained a collaborative project, served on the board of a professional...appointments with people all over the world. Think about contacting alumni of your lab or university or use...suggest you speak with. See this post that’s all about informational interviews, for more details on how...

  4. Plasmids 101: Expressing shRNAs for RNA Interference

    Type
    Blog Post
    Published
    June 17, 2025, 1:15 p.m.
    ...vectors. BMC Biotechnology, 6(1). https://doi.org/10.1186/1472-6750-6-1 O’Brien, J., Hayder, H., Zayed...endogenous miRNA machinery for processing (Figure 1). The shRNA sequence is transcribed to produce hairpin... recruits other silencing proteins. Figure 1: Comparison of shRNA and miRNA processing and silencing...,"rgb":"rgb(0, 82, 169)","rgba":"rgba(0, 82, 169, 1)"},"button_font":{"size":19,"styles":{"font-family...:"rgb(255, 255, 255)","rgba":"rgba(255, 255, 255, 1)"}}{% endraw %}{% end_module_attribute %}{% module_attribute...RNA-induced silencing complex. Molecular Cell, 82(1), 30–43. https://doi.org/10.1016/j.molcel.2021.11.026...progress in miRNA biogenesis and decay. RNA Biology, 21(1), 36–43. https://doi.org/10.1080/15476286.2023.2288741...

  5. Scientific Reproducibility - Focusing on Solutions at the Minisymposium on Reproducibility

    Type
    Blog Post
    Published
    May 18, 2018, 7:32 p.m.
    ... handed out at the event). Program 0 - 1:24 - Intro 1:24 - 29:31 - Reproducibility Overview - Jeffrey... 49:45 0 1:18:45 - Reagent Development - Steven C. Almo, Institute for Protein Innovation  1:18:45 - 2...Steve Almo’s talk about work at the Institute for Protein Innovation (IPI) (49:45 - 1:18:45), there are...reproducibility As Jeffrey Flier points out in his talk (1:24 - 29:31), there are a variety of ways of defining...enterprise towards greater reproducibility. Cause 1: Inability to repeat previously performed experiments...found. Consider the hypothetical situation in Figure 1 where many scientists are performing similar experiments...easier to find information about research tools. BenchSci collates information about antibodies while FPbase...

  6. Quickest Way to Deposit Plasmids: The Deposit Spreadsheet

    Type
    Blog Post
    Published
    March 8, 2017, 3:15 p.m.
    ...how to use our deposit spreadsheet to complete Step 1. Steps 2 and 3 are usually very easy — our tech transfer...scientist, you will have the most involvement with Step 1, and, while data entry can be a chore, we’ve made ...Deposit” and “Download Deposit Spreadsheet” (see Figure 1). Please read our “How to Deposit Your Plasmids with...thorough guide to our online data entry process. Figure 1: Begin the deposit process by clicking “Submit Online...spreadsheet (Figure 2) and are described in Table 1. Some cells have drop-down options for you to choose...and are exceptions to our standard workflow.  Table 1: Guidelines for the data fields in the deposit spreadsheet...streptomycin, tetracycline, combinations of the above, or other. High or Low Copy Choose from: high...

  7. Changing Labor Laws Bring Increased Postdoc Wages

    Type
    Blog Post
    Published
    Oct. 25, 2016, 2:30 p.m.
    ...$47,476 and the date for implementation was set for Dec 1 2016. In order to be exempted from the need to pay... these institutions (populations potentially from 1 to 5761, according to the NSF data) and therefore ...the Addgene Blog How did this change in labor laws come about? In March 2014, the White House issued a...must be above this level, and certain job duty tests must be met. In the Department of Labor’s general... to $47,476 per year, under updates to the Fair Labor Standards Act (FLSA). This is having a major effect...ensuring that either all affected scientists are paid above this threshold or for tracking the hours that these... a memorandum to the Secretary of Labor to update the FLSA, which had not seen revisions since 2004. In...

  8. REPLACR Mutagenesis: Replacing In Vitro Recombination Methods

    Type
    Blog Post
    Published
    Feb. 10, 2016, 3:30 p.m.
    ...deletions, point mutations PCR Reactions 1 1 1 per fragment 1 per fragment In vitro Assembly No No Yes...methods for site directed mutagenesis   References 1. Trehan, Ashutosh, et al. (2016). “REPLACR-mutagenesis...from previously discussed methods. As described above, you design two primers, each containing the desired...suited for insertions and deletions. The figure above shows guidelines for primer design; a desired insertion...mutation-containing colonies/total colonies) is about 84% for each of the three methods. However, REPLACR-mutagenesis... Additional Resources on the Addgene Blog Read about Other Plasmid Cloning Techniques like SLIC and Golden...

  9. A Primer on Optogenetics: Introduction and Opsin Delivery

    Type
    Blog Post
    Published
    Sept. 10, 2015, 2:30 p.m.
    ...Jacqueline N Crawley  [et al]. 2012;Chapter 1:Unit 1 20 1-18. doi: 10.1002/0471142301.ns0120s59. PMID:...the different variants [1, 2, 4]. And, of course, the best way to learn about the many different opsin...mutually exclusive) commonly used in optogenetics: 1) electrophysiology and 2) behavioral experiments. ...can be broken down broadly into three main steps: 1) Selection and expression of your opsin of choice ...monitor expression at various time points (e.g. every 1-2 weeks over 8 weeks) in order to determine the optimal...follow him on Twitter @derekpsimonphd.    References 1. Tye KM, Deisseroth K. Optogenetic investigation of..., Jacqueline N Crawley  [et al]. 2013;4(435):4 35 1-4  20. doi: 10.1002/0471142301.ns0435s65. PMID: 25429312...

  10. Technique: Probe Phage Genomes for Host Binding Proteins

    Type
    Blog Post
    Published
    Sept. 29, 2016, 2:30 p.m.
    ...which is also gaining a lot of new traction lately (1, 2), depends on knowledge of the structure(s) a given...RBPs successfully identified using this method. Step 1: Prepare a random fragment library of phage DNA This...first step involves digesting phage genomic DNA into 1-3 kb (approximately gene-sized) fragments so that ...in the bulk of resultant fragments falling between 1 and 3 kb results in optimal likelihood of capturing...solution-soaked filter paper (colony-side up) and leave for 1 h at room temperature. After this, it is helpful to...proteins expressed by your library. After blocking for 1 h at room temperature with gentle shaking, gently ... to incubate the membranes overnight in 500 mM to 1 M NaCl in order to enhance folding of the recombinant...

  11. Controlling for Off-target Effects with a New Genome-wide CRISPR Screen Design

    Type
    Blog Post
    Published
    Sept. 13, 2018, 1:55 p.m.
    ...holds true in genome-wide screens.   Figure 1: Summary of the advantages of the new approach to ... in both screens, with the growth screen having a 1% false discovery rate and identifying >88% of previously...in Morgens et al. contains three types of guides: 1) targeting guides (blue), which target all protein-coding...off-target sites was profiled. Guides with exact or 1-bp mismatch off-targets had greater toxicity than ...characteristics that influence gRNA off-target activity: 1) mismatches closer to the PAM are less tolerated than.... When comparing the toxicity of guides that have 1-bp mismatch off-target sites, short guides had reduced...Knockout Library are available from Addgene! References 1. Morgens, David W., et al. "Genome-scale measurement...

  12. Celebrating Outstanding CRISPR/Cas9 Achievements at the Dr. Paul Janssen Award Dinner

    Type
    Blog Post
    Published
    Sept. 15, 2014, 6:05 p.m.
    ...minutes, which was fun to watch. A simpler 1 protein - 1 RNA system Drs. Dounda and Charpentier met at...to direct cleavage the result was a simpler 1 protein - 1 RNA system.  Dr. Charpentier advocated for the...be used in people until we learn more about safety and more about the how to use genome edited stem cells...because Jennifer did her graduate work one floor above mine in the lab of Dr. Jack Szostak, who went on...ceremony honored Charpentier and Doudna, who talked about their research leading up to the discovery of the... at a 2011 conference and decided to collaborate on what was a “curiosity” driven project. Both awardees...importance of the strong, cross-disciplinary collaboration they shared to the work they did together. They...

  13. Fluorescent Tagging of Endogenous Genes with SapTrap

    Type
    Blog Post
    Published
    Oct. 12, 2017, 2:26 p.m.
    ... 5’ and 3’ homology arm repair template (Fig. 1, Step 1). There is no need for PCR or cloning, as digestion...selectable marker, and connector to be released (Fig. 1, Step 2-3). Since donor plasmids of the same type ...correctly assembles the final targeting vector (Fig. 1, Step 4), and co-injection of the targeting vector...human cells. To use CRISPaint, users need 3 vectors:  1) a gRNA vector that targets the gene of interest, ... Tagging with Short Homology Donors.” Cell Rep.15(1) (2016):210-8. PubMed PMID: 27052166. Kunzelmann,...tagged gene. Most insertions can only be detected by labor-intensive processes like PCR or by evaluating visual...repair after a CRISPR/Cas9 induced break. Learn more about these constructs and the cell lines they’ve been...

  14. Plasmids 101: TOPO Cloning

    Type
    Blog Post
    Published
    Oct. 27, 2016, 2:30 p.m.
    ... mind that Taq polymerase has an error rate of about 1 in 3,500 bases. Typically polymerases with proofreading... strand and a tyrosyl residue of topoisomerase I (1). If a 5′ hydroxyl group from a different DNA strand...Let’s break down the steps needed for TOPO cloning: 1. Create Your PCR Product: Design standard primers ...enzyme and Taq, with Taq used in an excess ratio of 10:1. Gel purify your PCR product and incubate it with ...you to see colonies within 8 hours. References: 1. Shuman S. "Recombination mediated by vaccinia virus...

  15. Plasmids 101: Control Plasmids

    Type
    Blog Post
    Published
    April 9, 2015, 3:29 p.m.
    ...from a plasmid   Figure 1: Expression Level of Gene X The results shown above are from a single experiment...Referring back to the experiment associated with Figure 1, the independent variable is the shRNA. Therefore ...the protein.   In analysis of the result in Figure 1, an internal control, such as the GFP-expressing Plasmid...control and is consistent with the result in Figure 1 could look like this: Figure 2: Expression of Plasmid...plasmid.  Let us now revisit our experiment. In Figure 1, it appeared as though the shRNA did not knock down...scientific inquiry and investigation. References: 1. The problem of pseudoreplication in neuroscientific...optimization within your experiment. Read on to learn more about the various controls that can be used for plasmid-based...

  16. An Interview with Connie Cepko - Gene Therapy, Plasmid Tools and Insights to Success

    Type
    Blog Post
    Published
    Dec. 8, 2015, 3:30 p.m.
    ... Podcast breakdown: (Time : Topic) 0:00-1:00 : Introduction 1:01-9:04 : What got Professor Cepko Interested... producer for the Addgene Podcast.     References 1.Tang, Jonathan C.Y., et al. “A nanobody-based system... Cepko. Listen to the podcast below to hear all about the research being conducted in Professor Cepko'...and mentoring styles. If you'd like to learn more about Professor Cepko's recent work on developing GFP-...the time to talk to us and look forward to hear about more exciting discoveries from her lab. Special ...

  17. Droplet Digital PCR for AAV Quantitation

    Type
    Blog Post
    Published
    Jan. 16, 2020, 2:18 p.m.
    ...range of titers. We usually dilute our samples 1:6 million to 1:25 million.  After making the dilutions, they...note that the dynamic range of the ddPCR is between 1 and 100,000 genome copies (GC) per reaction. Since...In the image to the right, there is approximately 1 positive copy per microliter in the no template control...elongation time to 2 minutes and the denaturation time to 1 minute has been shown to increase droplet separation...diagnosis." Emerging microbes & infections 7.1 (2018): 1-9. PubMed PMID: 29691363. PubMed Central PMCID: PMC5915492... droplet generator, you will have to be careful about transferring your droplets from the droplet generator...Additional resources on the Addgene blog Read more about polymerase chain reaction Browse our blog posts ...

  18. CRISPR Antimicrobials

    Type
    Blog Post
    Published
    May 3, 2016, 2:30 p.m.
    ..., they used 1-2 CRISPR crRNAs targeting sequences found only in certain bacteria (Figure 1). Citorik et...from 50% to 11% in just 24 hours.   Figure 1: Single-phage strategies for bacterial CRISPR targeting...genome, and it carries CRISPR machinery targeting 1) the given resistance gene and 2) a second lytic phage...the fight against bacterial superbugs. References 1. Citorik, Robert J., Mimee, Mark, and Timothy K. Lu...Targeted Bacterial Population Editing.” Cell Syst. 1(3):187-196. (2015). PubMed: PMID 26973885. Additional...organizations are working to help educate the public about proper antibiotic usage. Although these steps are...laudable, they likely won’t solve the growing problem. Above all, we need new antimicrobials, ideally ones for...

  19. AAV Titers: Where Do They Come From And What Do They Mean?

    Type
    Blog Post
    Published
    Nov. 15, 2017, 3 p.m.
    ...near-perfect physical-to-infectious particle ratio of 1:1 (Zeltner et al., 2010). However, for recombinant ...preparations are genome-containing (Figure 1).    Figure 1: Electron micrograph of an Addgene AAV...reported a physical-to-infectious particle ratio of 50:1 (Zeltner et al., 2010). The specific infectivity of... lot (if we still have it available). References 1. Fagone, Paolo, et al. "Systemic errors in quantitative... Human Gene Therapy, Part B: Methods 23.1 (2011): 1-7. PubMed PMID: 22428975. PubMed Central PMCID: PMC3640491... Addgene.org Find All Available AAV Learn More about Virus Production Find Viral Vector Protocols ...

  20. SciComm with the Experts at Science in the News Part 1

    Type
    Blog Post
    Published
    March 16, 2017, 1:06 p.m.
    ...they think about communicating science. Listen to the interview with Science in the News, Part 1 Podcast...Communication The Purpose of Science Communication #1 Mistake Scientists Make when Communicating with Non-Scientists...supporters of science communication. To help you think about ways to effectively communicate your science, we...Interview with Science Rapper Tom McFadden Learn about SITN's work at DayCon 2015 5 Reasons to Use Reddit...
Showing: 41 - 60 of 584 results