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We narrowed to 874 results for: sta

Showing: 561 - 580 of 874 results

  1. The PAM Requirement and Expanding CRISPR Beyond SpCas9

    Type
    Blog Post
    Published
    Aug. 20, 2020, 2:30 p.m.
    ... Cas9 orthologs have been isolated, and our understanding of their PAMs is shown in the table below.  ... Streptococcus pyogenes (Sp) 3' NGG Staphylococcus aureus (Sa) NGRRT or NGRRN Neisseria ... useful than SpCas9. For example, Cas9 from Staphylococcus aureus (SaCas9) is about 1 kilobase smaller...Zhang F (2015) In vivo genome editing using Staphylococcus aureus Cas9. Nature 520:186–191 . https://doi.org...

  2. What's Your Organism? Expanding Genomic Tools via the NSF EDGE Program

    Type
    Blog Post
    Published
    May 2, 2019, 12:41 p.m.
    ...purpuratus, the spiny purple sea urchin. It’s not a standard model organism, but it was easy to harvest eggs...this wonder of the organism.   It’s not an overstatement to say that CRISPR/Cas9 editing is one of the...which these methods are presently unavailable.” As stated by one of the NSF program directors, this program...Now what? What would you study first? They are starting by seeing if they can change long legged lizards...

  3. Supporting Reproducibility with a Connected ELN

    Type
    Blog Post
    Published
    Jan. 17, 2019, 1:38 p.m.
    ...original formatting. In this way data is moved from a static and isolated vehicle and becomes part of the dynamic...permanent research record, yet they are crucial to understanding research and the thinking and workflows that...third-party access to the ELN arises here. Notwithstanding access restrictions based on permissions, however...it would be possible to grant those wanting to understand and/or attempt to reproduce research relating...

  4. Hot Plasmids - November 2023

    Type
    Blog Post
    Published
    Nov. 14, 2023, 3:35 a.m.
    ...similar or better efficiency than PEmax, the current state-of-the-art. PE6b was very efficient for short, unstructured...fluorescently labeled. Using lentiviral vectors to stably or inducibly express tagged iPAK4 from different...distribution and has been verified to perform well in standard IHC and western blot protocols. You can find more... Figure 5: Delipidated mouse brain tissue was stained with Anti-PSD-95 [K28/43R] (70 µm mounted sagittal...

  5. Plasmids 101: Control Plasmids

    Type
    Blog Post
    Published
    April 9, 2015, 3:29 p.m.
    ... For every experiment, an investigator needs a standard against which the results can be compared; results...inconclusive and unreliable. Proper controls provide the constant variables that enable the correct interpretation...should be included as these provide the baseline/standard against which other samples can be compared. The...least you should repeat your whole experiment from start to finish multiple times and on different days. ...

  6. Tips for Using FRET in Your Experiments

    Type
    Blog Post
    Published
    Nov. 5, 2014, 3:41 p.m.
    ... paper, Sekar and Periasamy defined FRET as "a distance-dependent physical process by which energy is ...fluorophores used are in close vicinity. Thus, the distance between the two fluorophores and their orientation...less important when designing a biosensor, as the distance between the two fluorophores and their spatial...measurement methods as feasible when first beginning to establish the FRET methodology for a given experiment. You...

  7. The Advances Behind The World's First Personalized CRISPR Treatment

    Type
    Blog Post
    Published
    Sept. 16, 2025, 1:15 p.m.
    ... to tolerate bystander edits—unintended changes to nearby target bases. Up to 5 bystander adenine bases... in addition to the target base. However, all bystander edits produced synonymous changes, meaning the...codon corresponded to the same amino acid. Thus, bystander editing was deemed to pose low risk to KJ. This...

  8. Plasmids 101: Expressing shRNAs for RNA Interference

    Type
    Blog Post
    Published
    June 17, 2025, 1:15 p.m.
    ...siRNA duplex. Fun fact! Endogenous miRNA production starts with transcription of the miRNA to create pri-miRNA...of the most common uses of shRNAs is to generate stable knockout or knockdown cell lines. In fact, it was...specific mRNAs. shRNAs are a quick way to create stable knockdown cells lines, and you can usually find...10.1038/nbt.3947 Fire, A., Xu, S., Montgomery, M. K., Kostas, S. A., Driver, S. E., & Mello, C. C. (1998). Potent...

  9. Adeno-associated Viruses (AAVs) for Genome Editing

    Type
    Blog Post
    Published
    March 27, 2018, 1:32 p.m.
    ...cancer-causing mutations into the endogenous allele of the STAG2 tumor suppressor in human cells (Kim et al, 2016...compared to CRISPR editing CRISPR, of course, has started a revolution in gene editing. However, while CRISPR...applications that require large gene fusions. The current state-of-the-art in combining the AAV and CRISPR-based...human cells harboring tumor-derived mutations in STAG2." PLoS genetics 12.2 (2016): e1005865. PubMed PMID...

  10. CRISPR 101: Homology Directed Repair

    Type
    Blog Post
    Published
    Jan. 26, 2023, 2:15 p.m.
    ...Stroik January 24, 2023. DNA damage drives genome instability and contributes to cancer, premature aging, and...efficiency for more details on how "Cut-to-Mutation distance" affects editing efficiency. One important point...moderated by the Zhang lab CRISPR Challenges: Standardization and HDR CrispyCrunch Optimizing Donor DNA for...DNA double-strand break repair pathway choice. Shrivastav M, et al Cell Research (2008). PubMed. Mechanisms...

  11. CRISPR 101: Epigenetics and Editing the Epigenome

    Type
    Blog Post
    Published
    June 24, 2020, 5:45 p.m.
    ...across the genome) has been implicated in disease states, and targeting the epigenome may make certain processes...has fused LSD1 to the smaller nuclease-dead Staphylococcus aureus Cas9 (Sa-Cas) and deposited plasmid ...more than dCas9-VP64, especially when targeting distal enhancers. As the effects of these tools are likely...T, Rivenbark AG, Rashwan R, Blancafort P (2015) Stable oncogenic silencing in vivo by programmable and...

  12. CRISPR 101: Off-Target Effects

    Type
    Blog Post
    Published
    Feb. 8, 2024, 2:15 p.m.
    ...nearly impossible to eliminate, it’s essential to understand them in order to design the most specific assays...minimum of 1,000 targeted cells to sequence. In this instance, a 5% off-target frequency is something to keep...-targets and patient risk. Hopefully you can understand that depending on your platform, off-target effects... having off-target sites within a close enough distance to each other to cause a DSBs will be very low...

  13. Generating Mouse Models Using CRISPR/Cas9

    Type
    Blog Post
    Published
    July 12, 2016, 2:30 p.m.
    ... a mutation introduced by CRISPR. The sequence started clean and then, about 100 bps into the run, it ...CRISPR for mouse genome engineering From the very start, generating mouse models using CRISPR is easier ... genome. However, with only 3.4% of founders establishing germline transmission of the transgene, this...Efficient Production of Gene-Modified Mice using Staphylococcus aureus Cas9. Sci Rep 6: . https://doi.org/10.1038...

  14. Live and Let Dye: Self-Labeling Protein Tags

    Type
    Blog Post
    Published
    April 16, 2024, 1:15 p.m.
    ...synthetic chloralkane (CA) ligand. The current standard version known as HaloTag is actually HaloTag7,...Organic dyes are typically both brighter and more photostable than fluorescent proteins (often up to 10-fold.... Scale bar, 2 μm. Inset shows comparison with standard confocal microscopy. Image adapted from (Bottanelli...fluorophore’s microenvironment to enhance brightness, stability, or other properties is an active area of research...

  15. Custom CRISPR Screens & the Green Listed Software

    Type
    Blog Post
    Published
    July 11, 2017, 2:30 p.m.
    ... differentially expressed genes can be the next stage in making sense of such data. These targeted screens... gRNAs that target your list of selected genes. Start by choosing which “Reference Library” you’d like...to each reference library before using them to understand how they are set up. Using the “User Upload” ...PubMed Central PMCID: PMC4559080. 5. Tzelepis, Konstantinos, et al. "A CRISPR dropout screen identifies ...

  16. CRISPR 101 eBook...en español

    Type
    Blog Post
    Published
    Jan. 18, 2024, 2:15 p.m.
    ...español! Esta traducción fue regalada a Addgene por Daniel Mejías Sánchez, ¡y no podríamos estar más emocionados...científica profesional, L. Denise Roche, para editarla. Estamos orgullosos de anunciar que CRISPR 101: Una herramienta...

  17. 5 Science Rap Videos & Their Creator: Tom McFadden

    Type
    Blog Post
    Published
    Feb. 9, 2017, 3:30 p.m.
    ...American woman whose cervical cancer cells became a mainstain of biological study without her or her family'...Describes fossil rocks and their importance in understanding biological history. 4. Please Don't Kill ...ways to implement the next generation science standards and communicate science. Learn more about Tom ...

  18. Addgene Protocols Go Viral: AAV Purification and Titration

    Type
    Blog Post
    Published
    June 13, 2019, 12:19 p.m.
    ...generate a standard curve, visit the AAV Titration by qPCR written protocol page. Getting started with tissue...video for some tips and best practices for getting started with tissue cultures. To keep up on all of the...

  19. Depositor Week 2020 is Happening Now. Join us!

    Type
    Blog Post
    Published
    Nov. 16, 2020, 2:15 p.m.
    ...helped scientists around the world quickly get started with COVID-19 research (check out this article ... Here's the schedule for the week: Monday: Fun stats and trivia begins! Tuesday: Depositor features (...from 49 countries* and reached 102 countries. We started from 474 plasmid deposits in 2014 which has grown...

  20. AAV Packaged on Request is Here!

    Type
    Blog Post
    Published
    Jan. 10, 2025, 1:01 p.m.
    ...our new AAV Packaged on Request webpage to get started with your browsing and requesting. If you’re curious...easier to go from selection to viral vector. To start the AAV packaged on request process, simply navigate...placed, we’ll facilitate the necessary MTA, then start production and quality control.  Our packaged on...
Showing: 561 - 580 of 874 results