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We narrowed to 743 results for: TRI

Showing: 121 - 140 of 743 results

  1. Addgene’s Viral Service - Why Virus? Why Now?

    Type
    Blog Post
    Published
    March 23, 2017, 2:30 p.m.
    ...initiative since we started distributing plasmids in 2004. We’ve already distributed over 500 viral samples...In the middle of 2016 Addgene started distributing a small but growing catalog of ready-made AAV and ...the infrastructure capabilities to produce and distribute virus. Addgene is a 501(c)3 nonprofit and our...lead on operationalizing viral production and distribution, this project involved every Addgenie in the... to enable efficient, tracked production and distribution of viral samples. The Office Team made sure ... plasmid depositors and their institutions to distribute viral preps derived from plasmids in the repository...

  2. Transferable Skills Guide: Teamwork

    Type
    Blog Post
    Published
    Nov. 28, 2017, 2 p.m.
    ...useless, and excess people who are not contributing will detrimentally affect a team’s morale and efficiency...member-by-association of the Development Team, and I contribute to the Management Team that steers the organization..., when it came time to update how we make and distribute kits, I helped assemble a crack team of Addgenies...times have you ever seen a scientific article attributed to a single author? I’ve seen so few in my 20...to make progress towards open-ended goals whose metrics for success are defined by ongoing mission fulfillment... can get since participation on such a team is strictly voluntary. New members could be recruited, but... teams when I’ve realized that I really can’t contribute anything. Purging team members does not have ...

  3. Mycoplasma Contamination: Where Does It Come From and How to Prevent It

    Type
    Blog Post
    Published
    Oct. 8, 2020, 1:15 p.m.
    ...This post was contributed by guest blogger, Kaustubh Kishor Jadhav, a Research Assistant at MGMs Institute...enhance the growth of mycoplasmas. The serum is nutrient-rich and also the best source for mycoplasma proliferation... longer time. When they come in contact with a nutrient source, they start proliferating shortly. Once...to the liquid or semi-solid medium (containing nutrients essential for mycoplasma growth). Infected cell...culture. Once these cells detect mycoplasmas, they trigger a series of chemical reactions and this induces...mycoplasma and then specific enzymes are used which trigger cellular mechanisms that generate luminescence....fluoroquinolone ciprofloxacin, ciprobay, zagam, baytril, tetracycline, etc. are available for mycoplasma...

  4. Hot Plasmids - March 2020 - base editors, GEVI, MoClo, and optogenetics

    Type
    Blog Post
    Published
    March 3, 2020, 2:15 p.m.
    ...  AAV delivery of split base editors Article contributed by Jennifer Tsang AAVs are a great gene therapy...comparable to those currently used in human gene therapy trials. They further tested the base editors by correcting...genetically encoded voltage indicator Article contributed by Shreya Vedantam Genetically encoded voltage.... A MoClo toolkit for cyanobacteria Article contributed by Andrew Hempstead The Modular Cloning (MoClo... allows synthetic biologists to use Type IIS restriction sites to easily assemble multiple DNA fragments...applications including conversion of CO2 into water and electrical energy generation. Alistair McCormick’s lab recently...for precision in cell lineage tracing Article contributed by Erin Sanders CreLite, designed by the Eisenhoffer...

  5. To Each HIS Own

    Type
    Blog Post
    Published
    March 2, 2023, 2:15 p.m.
    ...the polyhistidine tag? The polyhistidine tag is a string of 6 or more histidine residues expressed in frame...using these more selective substrates along with stringent wash conditions.   Find polyhistidine tag plasmids...   Fig 2:  A, The polyhistidine tag is a string of histidine amino acids on the N- or C- terminus...tag placement can affect protein function. B, The string of histidines in the tag is typically between 6...normal protein function, however longer histidine strings can increase that risk.    Number of residues...of the tag, with longer tags you can use more stringent wash conditions and remove more contaminants without...antibody, like this one developed by Dr. James Trimmer’s lab, to perform assays that they otherwise would...

  6. Hot Plasmids May 2018 - Optogenetics, Decaffeination, Biosensors, and Fluorescent Protein Tools

    Type
    Blog Post
    Published
    May 15, 2018, 12:43 p.m.
    ... optogenetics toolbox with CRY2clust Article contributed by Brook Pyhtila  Listen to the CRY2clust podcast...dynamics, higher sensitivity to light, and better distribution of clusters without accumulation in subcellular...that enables single-cell optogenetics Article contributed by Meghan Rego  Listen to the soCoChR podcast...        Synthetic decaffeination operon Article contributed by Angela Kaczmarczyk  Listen to the synthetic...enables the degradation of caffeine (1,3,7-trimethylxanthine) and its conversion into xanthine. The majority...live-cell imaging of biochemical activity Article contributed by Angela Holmes Jin Zhang’s lab is developing...the FLIM-FRET acceptor podcast segment Article contributed by Christina Mork The Murakoshi lab has developed...

  7. Antibodies 101: ELISA (Enzyme-linked Immunosorbent Assay)

    Type
    Blog Post
    Published
    Aug. 24, 2021, 1:15 p.m.
    ...added to the wells. This reaction produces a colorimetric reaction that reflects the concentration of ... concentration or antibody specificity via a colorimetric reaction. Image from Boguszewska et al., 2019... concentration or antibody specificity via a colorimetric reaction. Image from Boguszewska et al., 2019...added and the reaction can be visualized via a colorimetric reaction. The direct ELISA is often used when...concentration of proteins in an ELISA well is based on a colorimetric reaction. Most commonly, this is a blue reaction...

  8. 5 Tips for Troubleshooting Viral Transductions

    Type
    Blog Post
    Published
    Aug. 11, 2016, 2:23 p.m.
    ... by ultracentrifugation (75,000 - 225,000 g for 1.5 – 4 hours at 4 °C). After ultracentrifugation, virus...integrity of your virus, perform a diagnostic restriction enzyme digest and compare it to some reliable...vectors) you can concentrate your virus by ultracentrifugation of the viral stock, followed by resuspension...packaging cell debris before proceeding to ultracentrifugation to avoid contaminating your transduction ...through a 0.45 µm or 0.22 µm filter) or by a centrifugation step (5 minutes at 300-500 g). After removing... to concentrate a virus solution without ultracentrifugation, you can reduce the volume of cell culture...

  9. Production of Virus in Insect Versus Mammalian Cells

    Type
    Blog Post
    Published
    Nov. 5, 2024, 8:32 p.m.
    ...days Purification Ultracentrifugation (AAV); centrifugation (lenti) Centrifugation Titration time ~...using methods like ultracentrifugation, while lentivirus supernatants are centrifuged and filtered to eliminate...have a higher titer than a P1 virus. Pro-tip! Centrifuge the viral supernatant in between passages to ...straightforward — simply spin down the supernatant in a centrifuge to remove any unwanted cellular debris, as you...

  10. Viral Vectors 101: Voltage Indicators

    Type
    Blog Post
    Published
    Jan. 30, 2024, 2:15 p.m.
    ...and sensing electrical potential. Thankfully, there is a tool to measure these electrical events! Voltage...biological tools. Why Use Voltage Indicators? Electrical signals are integral to many facets of biology...muscle contraction – is directly related to the electrical impulse of the cardiac cells. To study this phenomenon...is carried out by action potentials which are electrical charges propagated through multiple cells to ...depends on the ability to monitor their signals – electricity! The research tools for studying voltage within...was dipicrylamine, a lipophilic compound that distributes itself within the plasma membrane as well. Another...

  11. Simplify Cloning with in vivo Assembly

    Type
    Blog Post
    Published
    Oct. 18, 2018, 12:37 p.m.
    ...This post was contributed by Jake Watson and Javier García-Nafría from the MRC Laboratory of Molecular...present even in common lab cloning strains. This intrinsic bacterial recombination pathway, referred to as... longer oligos, which could be avoided using restriction enzyme cloning, were more prohibitive at the ... doesn’t matter if the DNA is PCR amplified, restriction digested or even a synthesized gene. PCR is the... Mutagenesis is performed by designing primers astride the old codon, amplifying the whole vector. The...extending homologous sequences (to 25-30 bp). Tips and tricks for IVA cloning Use a sequence manager A sequence...IVA can be employed by cutting the vector with restriction enzymes and adding the corresponding homologous...

  12. Tips from the Repository Trenches: Using Barcodes to Track Samples

    Type
    Blog Post
    Published
    Oct. 6, 2015, 2:30 p.m.
    ...colonies in petri dishes, but close to 80% of samples are received as DNA in a microcentrifuge tube. Once...sample enters Addgene’s lab, a series of events is triggered. Each step is tracked through barcoded tubes that...track all of our 40,000 samples available for distribution!    Check Out How We Think about Developing...The preferred E. coli strains for storage and distribution at Addgene are DH5α, NEB stable, ccdb survival...Each sample that is transformed is plated onto a petri dish plate that is also barcoded. The barcodes on... to be transformed with a micropulser using an electric charge to help the DNA enter the cells. Some samples...

  13. Important Considerations in Optogenetics Behavioral Experiments

    Type
    Blog Post
    Published
    Oct. 1, 2015, 2:30 p.m.
    ...This post was contributed by guest blogger Derek Simon. The actual experiments you do will be determined...implanting an electrode and non-specifically electrically stimulating an ill-defined region of the brain...trained to “freeze” upon anticipation of a mild electric foot shock that has become associated with a visual...using HR was found to block the acquisition and retrieval of contextual fear memories [5].  In a modified...other regions of the brain may be involved in retrieval of remote contextual memories. This study is an...real-time inhibition), and behavioral (remote memory retrieval) specificity. Optogenetics can be used to more...2012): 159-172.5. Goshen I, et al. Dynamics of retrieval strategies for remote memories. Cell. 2011;147...

  14. Hot Plasmids: Summer 2024

    Type
    Blog Post
    Published
    Aug. 27, 2024, 1:15 p.m.
    ...antibody (N206A/8 TC Supernatant). Image attribution: James Trimmer, UC Davis.   ...interact with the air-water interface (AWI) before vitrification, they can be completely denaturated (left) or...representative micrograph (C), particle orientation distribution and Fourier-shell correlation curve (D), and...protein. While the addition of LEAs may bias the distribution of particle orientations, this could be overcome...off-target editing. Cargo size limits are also less stringent for eVLPs than other viral delivery methods, allowing...anti-GFAP [N206A/8R] antibody shared by James Trimmer’s lab (Figure 5) as well as antibodies for identifying...

  15. Multiple Plasmids at a Low Price: Kits from Addgene

    Type
    Blog Post
    Published
    Sept. 14, 2016, 2:30 p.m.
    ...study a matrix metalloproteinase: López-Pelegrín, Mar, et al. "A novel mechanism of latency in matrix metalloproteinases...Addgene. What you might not know is that Addgene distributes curated collections of plasmids as kits with ...This kit is designed to be used with Type IIS restriction enzymes and standardized primers to clone your... pExpression vectors) plasmids. The type IIS restriction sites used in these vectors are of low abundance...Biosafety of biotechnologically important microalgae: intrinsic suicide switch implementation in cyanobacterium...used to generate these fusions all use the same restriction enzymes for cloning. Furthermore, some plasmids...

  16. Reflections and Looking Ahead

    Type
    Blog Post
    Published
    Feb. 25, 2025, 2:15 p.m.
    ...collaboration. Together, we distributed 184,824 materials to 39,529 scientists across 86 countries. Even more remarkably...remarkably, 1,160 labs from 522 organizations in 41 countries enriched our repository with 15,020 new plasmids...part of the story. This year, we made significant strides in making science more accessible and reliable....thoroughly characterized antibodies, and our contributions to key research papers are already inspiring...Errington, T. M., Turn, R. E., Bandrowski, A., Trimmer, J. S., Rego, M., Freedman, L. P., Ferrara, F.,...

  17. Editor's Choice, September 2016

    Type
    Blog Post
    Published
    Oct. 7, 2016, 4 p.m.
    ...of months. Read on to discover what new post contributed the most to this record breaking month and to... Apps for Lab Life This very useful post was contributed by guest blogger Sean Stacey from Eastern Tennessee...Phage Genomes for Host Binding Proteins," was contributed by guest blogger Jessica Sacher from the University...Disease, Running for FOP, Running for AJ,” was contributed by Kurt Swanson, husband of Addgene Director ...currently on my way back from a very successful Outreach Trip in San Francisco and would like to give my thanks...who spoke with me and deposited plasmids on this trip. Here’s to hoping that October is even more awesome...

  18. 2023 and 2024: Reflections and Looking Ahead

    Type
    Blog Post
    Published
    Jan. 23, 2024, 2:15 p.m.
    ... In 2023, Addgene distributed 188,729 materials to 39,844 scientists in 88 countries around the world....1,106 labs in 504 organizations from 37 different countries, into our repository, while expanding global access... access to our repository through our distributor partners, with the launch of antibodies in China and...Protein Innovation (IPI), in which Addgene will distribute recombinant antibodies (rAbs) developed at IPI... repository, partially through work with our distributors in China, Korea, Japan, India, and Brazil. Through...

  19. New Norepinephrine Indicators: nLightG and nLightR

    Type
    Blog Post
    Published
    Dec. 12, 2023, 2:15 p.m.
    ... and were only available as green probes. The Patriarchi Lab aimed to overcome these limitations by developing...vivo experiments, and nLightG was successfully trialed in two-photon in vivo experiments. nLight indicators...nLightR, both generating a measurable signal after electrical stimulation with a single pulse, while nLightR...researchers looking to study norepinephrine, the Patriarchi lab continues to work on further improvements...nLightG. Many thanks to Mike Waring and Tommaso Patriarchi for their assistance with this blog post. References...Benke, D., Weber, B., Bohacek, J., Reiner, A., … Patriarchi, T. (2023). Sensitive multicolor indicators for...

  20. IBEX Knowledge-Base: A Data Resource for Multiplex Tissue Imaging

    Type
    Blog Post
    Published
    June 8, 2023, 1:15 p.m.
    ...includes 1049 community-validated reagents from 20 contributors, including 61 fluorescent probes, representing...for the performance of a reagent, e.g., antigen retrieval conditions, dye inactivation details, tissue preservation...   Figure 2: Screenshot showing reagent entries with associated metadata adapted from the Affinity...preservation, target tissue, detergent, antigen retrieval conditions, and more. Users can also recommend... showing the IBEX Knowledge-Base, with every contributor listed as an author.  The IBEX Knowledge-...and share their validation work. Everyone who contributes to the IBEX Knowledge-Base is named on the Zenodo...
Showing: 121 - 140 of 743 results