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We narrowed to 842 results for: Eras

Showing: 231 - 240 of 842 results
  1. xCas9: Engineering a CRISPR Variant with PAM Flexibility

    Type
    Blog Post
    Published
    March 28, 2018, 6:52 p.m.
    ...SaCas9 with an NNGRRN PAM by mutagenizing the PAM-interacting domain. However, these alternative PAM sequences...often more complex than NGG, resulting in lower overall genome frequency. Despite the progress we’ve made...evolution Hu et al. used phage-assisted evolution to generate and select for Cas9 mutants with PAM flexibility...catalytically dead SpCas9 (dCas9) fused to the bacterial polymerase subunit ω. This construct is designed to activate...another 72 hours of phage-assisted evolution, generating xCas9 2.0-2.6. This second round of evolution... Cas9 variants with activity on non-NGG PAMs, generating xCas9 3.0-3.13. To test xCas9 3.0-3.13, Hu et...transcription. Sites containing NG, GAA, or GAT PAMs averaged 56-91% transcriptional activation compared to ...
  2. AAV Vector Quality Control: Going the Extra Mile with NGS

    Type
    Blog Post
    Published
    Sept. 12, 2017, 1:44 p.m.
    ... by Single-stranded Virus Next-generation Sequencing. Molecular Therapy - Nucleic Acids 4:e260 . https...our viral service to continue our mission of accelerating scientific research. To make sure that adeno-associated...more rigorous quality control, including next generation sequencing (NGS) of the viral genome to confirm... the virus itself. While these impurities are generally considered innocuous for research-grade vectors...likelihood of recombinase-independent expression. Next-generation sequencing (NGS) is a powerful tool that can ...Vivo Persistence after Vector Delivery. Molecular Therapy 12:744–753 . https://doi.org/10.1016/j.ymthe.2005.06.003...Mueller I, Mitsopoulos A, Fan M (2020) A Novel Next-Generation Sequencing and Analysis Platform to Assess the...
  3. Which Fluorescent Protein Should I Use?

    Type
    Blog Post
    Published
    May 20, 2014, 2:06 p.m.
    ...proteins that interact. Indeed, FRET is often used to determine if two proteins interact. Oligomerization...10hours. Temperature: FPs maturation times and fluorescent intensity can be affected by the temperature. For...filter that will pass blue light to the detector/camera, then BFPs are of no use to you. When using more...Oligomerization: The first generations of FPs were prone to oligomerize. This may affect the biological function...parameters (e.g. excitation light intensity, pH or temperature). Photostability: Fluorescent molecules gets ...parameters (e.g. excitation light intensity, pH, or temperature). pH Stability: This parameter is important if...Helpful Websites & Resources: FP guide at Addgene Interactive Visualization of Fluorescent Protein Properties...
  4. CRISPR Methods for Bacteria: Genome Engineering, CRISPRa, CRISPRi, Base Editing, and More

    Type
    Blog Post
    Published
    Sept. 28, 2020, noon
    ...organisms or organism/gene interactions with the host. This scenario allows for several potential CRISPR applications... functions in S. pneumoniae and can be used to generate multiple mutations simultaneously (Jiang et al... with CRISPR to create a system for scarless, iterative genome engineering (Jiang et al., 2015). pCas ... or a dCas9 fused to the omega subunit of RNA polymerase, the lab   successfully repressed or activated...Noting that the more common spCas9 system has generally low efficiencies or can be proteotoxic when used... orthologs to identify a more efficient, well tolerated, Cas enzyme. They identified the Cas9 orthologue...problem than repression, scientists have deposited several plasmid tools that can be used in this way. As ...
  5. CRISPR 101: Ribonucleoprotein (RNP) Delivery

    Type
    Blog Post
    Published
    Sept. 6, 2018, 12:02 p.m.
    ...enhanced the ability of scientists to make genomic alterations, bringing about a revolution in genome engineering...engineering applications of CRISPR including: generating single or multi-gene knockouts in a wide variety...editing using homology directed repair (HDR), and generating large genomic deletions. What are the advantages...and specificity is a concern, such as knockout generation or homologous recombination.  However, experiments...step in this type of CRISPR experiment is the generation of the RNP complex.  While one option is to purchase...in vitro transcribed from ssDNA, which can be generated by commercial vendors such as IDT. These two components...electroporation (A in the figure above), which generates pores in the cell membrane, allowing for entry...
  6. AAVs CREATed for Gene Delivery to the CNS and PNS

    Type
    Blog Post
    Published
    Sept. 28, 2017, 2:01 p.m.
    ...neurons throughout the whole brain. Neurons of the peripheral nervous system (PNS), which connect the heart...mutant AAV capsid (cap) expressing plasmids is generated. Diversity is introduced into the cap plasmid ...was neurons and astrocytes. Why screen for IV deliverable AAVs? Typically AAVs are directly injected into...transduction efficiency of neurons were measured. On average, AAV.PHP.eB and AAV.PHP.S had 1.5- to 2-fold higher...They also transduced a higher number of neurons overall (GFP+ cells that also stained for a neuronal marker...labeling of neurons, because it doesn’t require the generation of a transgenic mouse. 2. Cell-type-specific...translational applications (mechanistic studies and gene therapy treatments for neurological diseases). The Gradinaru...
  7. Tips for arabidopsis transformation

    Type
    Blog Post
    Published
    Oct. 25, 2018, 1:23 p.m.
    ... transformation. There are many motivations to generate transgenic Arabidopsis, from studying transcriptional... floral drip or dip transformation method. The general steps for this method include: Cloning and transforming...appropriate expression vector is the first step in generating transgenic Arabidopsis. There are a bunch of ...vectors and can be used for promoter swapping and generating N and C terminally tagged fusion proteins with...plants you are transforming into will be your T0 generation. These plants will be ready to transform when...will also increase the number of inflorescences overall, which may improve transformation efficiency. If...such a construct will be silenced in subsequent generations. You will know if you obtained a transformant...
  8. Interview: Hodaka Fujii on enChIP, New CRISPR Tools, and More

    Type
    Blog Post
    Published
    Dec. 2, 2014, 7:23 p.m.
    ...technology and its advantages? Fujii: In the last several years, my lab has been working on development of...specific genomic regions while retaining molecular interactions. For this purpose, we developed the insertional... regions. I believe that enChIP will markedly accelerate research of regulation mechanisms of genome functions...some of its potential applications? Fujii: We generated a series of retroviral vectors expressing tagged...biological systems. We are currently developing several additional systems of enChIP to make the technology...to journals. In addition, it is my pleasure to interact with my colleagues in meetings of scientific societies... Rhine River. In the US, I very much enjoyed interactions with many excellent colleagues at NYU and visiting...
  9. Fluorescent Proteins 101: Green Fluorescent Protein (GFP)

    Type
    Blog Post
    Published
    May 15, 2014, 3:33 p.m.
    ...implantation and generation of transgenic mice. Purification: GFP can be used as a general epitope tag for...biosensor or cell marker, studying protein-protein interactions, visualizing promoter activity, and much more...fluorescent activity; very little truncation is tolerated, however, point mutations are acceptable. GFP'...mutations have since been introduced to GFP and new iterations of fluorophores are constantly being engineered...energy transfer (FRET): This is used to study the interactions between two proteins or between two domains ... has also been used to study protein-protein interactions. In this case, two portions of EGFP are fused... their activity and visualize the effects of alterations to this activity. Learn more about optogenetics...
  10. With an Eye Towards the Future, We Look Back at the March for Science

    Type
    Blog Post
    Published
    Oct. 24, 2017, 1:54 p.m.
    ..., the legacy of each government and generation is in the veracity of its work. Alina Chan is a postdoctoral...these mistakes quickly. However, many scientists operate in a hyper-competitive environment where getting...speak out in unprecedented force during the 2015 federal election.   Even as we marched in solidarity with... Washington, DC, USA 38.9072°N 77.0369°W – Mark Lucera I am a passionate scientist.  I care about my ...People asked, and we talked.  That's a win. Mark Lucera is a PhD trained scientist at the University of...Postdoctoral Association.  Follow him on twitter at @Mark_Lucera. Ann Arbor, MI, USA 42.2808°N 83.7430°W – Alexandra...Aurora, CO where she studies the development and regeneration of mammalian taste buds. Erin is also the President...
Showing: 231 - 240 of 842 results