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Showing: 401 - 410 of 884 results
  1. Transferable Skills Guide: Teamwork

    Type
    Blog Post
    Published
    Nov. 28, 2017, 2 p.m.
    ...lines of communication Few people actually like meetings, but run well, meetings can be a critical part of...depositors; Gizela, the lab member who knows how the physical kits are made and shipped; Chiara, the tech transfer...transfer expert who understands the somewhat complicated Material Transfer Agreement process that kits...repository, performing quality control, and providing technical customer service. Team members are highly trained...But this is a blog post, so here are just a few critical features based on my own experience: Leadership...should be on the team. As a team leader, I’ve (diplomatically) booted people off teams. I’ve also kicked ...are helpful, they are certainly not the only communication options. Addgene, along with an increasing number...
  2. Important Considerations When Using AAVs

    Type
    Blog Post
    Published
    June 13, 2017, 2:30 p.m.
    ...the cell type under study. Many AAVs will show significant expression in a variety of cell types, but you...previous literature using AAVs for DREADD delivery indicates ~7-21 days are required for the onset of gene ...rate limiting step and can immediately undergo replication and transcription. However, with scAAV the effective...by the use of AAVs? 1) Combined functional and anatomical mapping of circuits In our lab, we use AAV-DREADD...these complexes are so robustly expressed that anatomical assessments can be easily performed too. While...identified this feature of AAVs as a new tool for neuroanatomical tracing (11). With the ability to produce neuron...Retrograde AAV Preps at Addgene 2) Comparison of genetically engineered receptors (i.e. chemogenetics vs. ...
  3. Cloning Mammalian Cells with the Agarose Method

    Type
    Blog Post
    Published
    Sept. 7, 2017, 12:17 p.m.
    ... molecular biology-grade agarose containing physiological concentrations of salts and glucose. If we circled...diluted from 10X and containing both Hepes and bicarbonate) is brought to room temperature and placed in..., and making sure we always maintain a backup replicates of each clone in case of contamination. We do...fluorescent protein), fluorescence microscopy can theoretically be used to select specific wells from the 48...further analysis. To assess CRISPR/Cas9 knockout efficacy, we have used both Western blotting and PCR, depending...population of transfected clones. The technique is applicable to a wide variety of cell lines, from HEK to ... terms of growth rates, morphology or other physiological properties. An advantage of this technique is...
  4. Antibodies 101: Conventional vs Spectral Flow Cytometry

    Type
    Blog Post
    Published
    Aug. 3, 2023, 1:15 p.m.
    ...one another, and a value of “1” indicating those markers are identical and completely indistinguishable... tumors, and moreso than other methods, the identification and isolation of rare cell types. In recent...relies on “unmixing.” Unmixing uses a complex mathematical algorithm and single stained reference controls...spectral flow experiment and panel, there are a few critical factors to keep in mind in order to get the best...autofluorescence across various tissue types varies, it is critical to include an unstained sample for each tissue...complexity index ranges from 0-1, with a value of “0” indicating those markers are completely distinct from one...samples. If you are using conjugated dyes, it is critical that your controls and your sample antibodies ...
  5. Let There Be LITE Plasmids

    Type
    Blog Post
    Published
    Nov. 21, 2013, 3:56 p.m.
    ...in normal biological processes and disease states. While LITE plasmids have clear application to anyone...effectors (TALEs) as anchors for genome engineering applications was still very new. Now, Konermann and her colleagues.... All of this requires genes to be regulated dynamically.” To understand how that works in memory formation...they could package LITEs in viral vectors and genetically target them to specific cell populations. They... the brains of living mice both quickly and significantly. Genes under LITE control showed a rise in transcription...prove the causal role of specific epigenetic modifications in the genome,” Zhang said in MIT’s press release...with LITE? Reference: Silvana Konermann et al. "Optical control of mammalian endogenous transcription and...
  6. Introducing Addgene's New Search - Find Plasmids More Easily For Your Research!

    Type
    Blog Post
    Published
    Dec. 3, 2019, 11:38 a.m.
    ...? The available filtering options now change dynamically based on the type of material and specific search...articles. From paper to plasmid Authors regularly indicate that their plasmids are available from Addgene...papers. Maybe they started their deposit prior to publication and were able to include specific plasmid ID ...terms we can use to find materials from this publication. Searching for the title of a paper works You...filters Not every plasmid search will start from a publication. You may have an idea for a plasmid that would...guide RNA / shRNA inserts Resistance Marker: This indicates the selectable marker used in your model system...Requests: Only see plasmids with more than the indicated number of requests Availability to Industry: Restrict...
  7. INTEGRATE: Bacterial Genome Engineering Using CRISPR-Transposons

    Type
    Blog Post
    Published
    Dec. 7, 2020, 2:53 p.m.
    ...candidate in the Sternberg Lab at Columbia University Medical Center. DNA transposons are ubiquitous genetic ... and have been adapted for a wide variety of applications - as mutagenesis tools for genetic studies (... The process also creates a 5-bp target-site duplication (TSD), a hallmark characteristic of the Tn7-family...a multi-spacer CRISPR array. Workflow and technical considerations Making insertions in bacterial ...into cells and plate overnight Screen colonies phenotypically or by PCR/sequencing While CRISPR-transposons...few important details. For transposons to be specifically recognized during transposition, genetic cargos...Leveraging a unique marriage between distinct biological elements, CRISPR-transposons excel at programmable...
  8. Viral Vectors 101: The Retroviral Lifecycle

    Type
    Blog Post
    Published
    July 27, 2023, 1:15 p.m.
    ...retroviruses ” (Cullen, 1992) because of their more complicated genomes. Here, we will mostly use the gamma-retroviruses...(Prussin et al., 2015), only a small fraction typically cause disease. The gamma-retroviruses have their...wild-type viral particle — and of the normal, replicative life cycle — can help you understand these seemingly...of a non-living viral particle, and how we as dedicated researchers can exploit it. This blog was written...Hutcheson for her assistance with lentiviral replication.  Resources and References More resources on...101: Types of Viruses Viral Vectors 101: Viral Applications Resources on addgene.org Addgene's Lentiviral... proteins encoded by complex retroviruses. Microbiological Reviews, 56(3), 375–394. https://doi.org/10.1128...
  9. Course-Based Undergraduate Research Experiences (CUREs)

    Type
    Blog Post
    Published
    Feb. 9, 2023, 2:15 p.m.
    ...MCC develops and makes freely available technical and pedagogical resources, offers mentoring for instructors...best teachers and mentors pass on more than just technical knowledge, shaping their trainees’ very way of...citrate synthase and presented their findings at the American Society for Biochemistry and Molecular Biology...their research capabilities and laboratory and critical thinking skills (Knutson et al., 2010a,b). Classroom-based...implementation. Funded by the NSF (with Co-PIs Jessica Bell, Lisa Gentile, Ellis Bell, and Amy Springer...Einstein: A Life. Chapter 17, Einstein Discovers America. New York./  Callahan, K., Peterson, C., et al....biochemistry laboratory: Part I – guided inquiry – purification and characterization of a fusion protein: Histidine...
  10. Tips for Screening with Yeast Two Hybrid Systems

    Type
    Blog Post
    Published
    Oct. 22, 2015, 2:30 p.m.
    ... can often be accounted for using appropriate replicates and controls (see Tips below), and by validating...two-hybrid screening Minimizing false positives: Run replicates of the experiment to reduce the likelihood of...expression and correct folding, post-translational modification, protein degradation, access to the nucleus ...organisms, including bacteria, alternative fungi (C. albicans, pC2HB) (7) and mammalian cells. If the problem...co-expression of the enzyme responsible for the modification in the assay host strain can help. In order...that the configuration of your fusion proteins physically blocks the binding sites for the protein partner...Tachihara, K., Umezawa, Y.l. Split luciferase as an optical probe for detecting protein-protein interactions...
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