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Showing: 341 - 360 of 811 results
  1. PiggyBac-ing Through the Genome Editing Field

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    Blog Post
    ...successfully used for genetic manipulation in mammalian cells until 2005 [1]. Like other transposons, ...to efficiently perform genetic manipulations in animal models or cells lines, including stem cells, without...specific, and has not been shown to cause genomic abnormalities when expressed. This lack of off-target effects...27075976. 4.  X. Li, E. R. Burnight, A. L. Cooney, N. Malani, T. Brady, J. D. Sander, J. Staber, S. J. Wheelan...
  2. Lambda Red: A Homologous Recombination-based Technique for Genetic Engineering

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    Blog Post
    ...-selectable sequences, point mutations or other small base pair changes, and the addition of protein tags....   This setup can be also be used to modify chromosomal genes. After the initial editing event, the defective... system is best suited for editing bacterial chromosomal DNA because it is easy to remove the recombineering...Knockout/Knockin Plasmids to Disrupt Genes in Mammalian Cells CRISPR Methods for Bacterial Genome Engineering...
  3. RNA Interference in Plant Biology: New Tools for an Old Favorite

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    Blog Post
    ...trigger in the mammalian research community. Fortunately, many tools for shRNA in mammals are available...enzymes are involved in the biogenesis of different small RNAs (Figure 1). These siRNAs can exert their gene...posts Resources on Addgene.org Find tools for mammalian RNAi Browse all plasmids for RNAi Check out Addgene's...
  4. Mycoplasma Contamination: Where Does It Come From and How to Prevent It

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    Blog Post
    ...Mycoplasmas are considered to be one of the simplest and smallest bacteria. The absence of a rigid cell wall makes...microscope, the mycoplasma DNA appears in the form of small clusters, apart from the cellular DNA. Fluorescent... a very good practice for prevention. Prepare a small quantity of media stock that would be used for the...) Sensitive Assay for Mycoplasma Detection in Mammalian Cell Culture. Anal Chem 84:4227–4232 . https:/...
  5. Fluorescent Proteins 101: Photoactivatable Fluorescent Proteins

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    Blog Post
    ...FP-protein fusions (FP-chimeras) is that they undergo normal protein turnover. FP-chimeras are continuously ... Threonine 203 to Histidine (T203H) (1). wtGFP normally contains a mixed population of neutral (protonated...30°C and this is not ideal for experiments in mammalian cells. Dendra2 is another monomeric PA-FP which...microscopy (PALM, also FPALM) (11). For PALM, a small area containing inactive PA-FPs is photoactivated...
  6. Typing CRISPR Systems

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    Blog Post
    ... only recently that researchers began building optimal plasmids to harness the power of Class 1 systems...effector and is able to target and edit RNA in mammalian cells. Type IV Type IV is the middle child (like.... Cas9 was the first to be adapted for use in mammalian systems, with the landmark publication in 2013... of DNA. The V-F variants, which are among the smallest Cas enzymes (400 to 700 amino acids), use a Cas14...
  7. Which Fluorescence Microscopy Techniques is Best for Me?

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    Blog Post
    ...technologist taking an x-ray, or a biologist imaging the smallest structures of life; the key to a great image is... Due to the wave nature of light, an infinitely small point of light will blur to a 200-300nm sized spot...light microscope is diffracted. Even an infinitely small point of light – think of a single GFP molecule ...nanometers. Thick dynamic samples Ex: 3D cell cultures, small model embryos >15 μm Thsee are some of the most ...
  8. New FLIS Plasmid (April Fools 2022)

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    Blog Post
    ...commonly known as fruit flies, have been an important animal model for research, particularly genetics research...reasonably close genetic homology to humans, and small size have allowed scientists to use it as a model...capturing the flies is nearly impossible, due to their small size and inconspicuous coloring.  FLIS plasmid Recently...
  9. Antibody Validation for Flow Cytometry

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    Blog Post
    ... Triton X-100; and methanol, we found that the optimal perm/fix solution depended on the specific antibody...caused by siRNA is also transient, and as such, the optimal knockdown of the protein target will depend on ...or ephemeral knockdown will be possible, and the small difference in protein expression makes confirmation...10.1038/nmeth.3995 Virk, H. S., Biddle, M. S., Smallwood, D. T., Weston, C. A., Castells, E., Bowman, V...
  10. Your Top Requested Plasmid in 2015!

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    Blog Post
    ...deliver both Cas9 and your gRNA of interest to mammalian cells. It was designed to have increased lentiviral...available for a little over a year and a half, a small sampling of the research it has already been used...Some Common Ways to Deliver CRISPR Plasmids to Mammalian Cells Resources on the Addgene Website Visit...
  11. Let There Be LITE Plasmids

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    Blog Post
    ...to cultured cells but extends to freely moving animals, as established for conventional optogenetic tools...unraveling the genetic and epigenetic players in normal biological processes and disease states. While ... Silvana Konermann et al. "Optical control of mammalian endogenous transcription and epigenetic states...
  12. From our Table to Yours: An Inside Look at Lunch at Addgene

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    Blog Post
    ...favorite parts about working at Addgene. We’re a small non-profit, so we can only provide free food on ... employees, Addgene has naturally divided into smaller functional teams. Our Executive Director, Joanne... setting for people in different labs to chat informally about their challenges, successes, and expertise...
  13. Spurred by COVID-19, Addgene Bridges Plasmid Sharing Between Academia and Industry

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    Blog Post
    ...with children playing in the background became a normal occurrence as Addgene and our university partners...assessed how to more readily enable research. Often “normal” timelines that could be weeks to months were reduced...of SARS-CoV-2 proteins in bacteria, yeast, and mammalian cells. We teamed up with Ginkgo Bioworks to quickly...
  14. pSiM24: Simplifying Plant Genetic Engineering

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    Blog Post
    ...stable gene expression applications in plants. This smaller, easily customizable vector functions in multiple...plant scientists want to transfer large genes, smaller binary vectors with a larger cloning capacity would...infection. At approximately 7 kb, pSiM24 is 2 and 6 kb smaller than commercially available pCAMBIA and pKYLX vectors...
  15. Celebrating Outstanding CRISPR/Cas9 Achievements at the Dr. Paul Janssen Award Dinner

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    Blog Post
    ...club of people who have been in space is pretty small). Therefore, I was delighted to be invited to the...important part of their work? First, the discovery of a small, programmable DNA cutting enzyme. Second, since ...discussed how J&J is already modifying cell and animal genomes to test hypotheses of disease. They are...
  16. SpyLigase Irreversibly Locks Peptides Together for Efficient Cell Capture

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    Blog Post
    ...in a genetically encoded way. SpyTag is nice and small, just 13 amino acids, but SpyCatcher is a protein...Schwarz-Linek at St. Andrews discovered the domain. It is small, highly stable and has this amazing chemistry locking... types, like stem cells or cells infected with malaria or other parasites. Addgene: Do you have any particular...
  17. Sensing Neuronal Dopamine

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    Blog Post
    ...method is that it can be performed in a live awake animal by surgical implantation of the probe into a specific...powerful and offers immediate measurements in a live animal that can be correlated to behavior, the technique... molecular tool to detect and image DA in live animals (Patriarchi et al., 2018). Similar to calcium and...
  18. History of CRISPR Cas - A tale of survival and evolution

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    Blog Post
    ...specialized Cas proteins snip the foreign DNA into small fragments approximately 30bp in length and paste...editing was initially described by Cong et al. and Mali et al. in January 2013 (7, 8). Nine months later...Zhang F. Science. 2013 Jan; 339 (6121): 819–23. Mali P, Yang L, Esvelt KM, Aach J, Guell M, DiCarlo JE...
  19. CRISPR Methods for Bacteria: Genome Engineering, CRISPRa, CRISPRi, Base Editing, and More

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    ...efficiency for point mutations and 66% efficiency for small insertions. Multiplexing of two targets simultaneously.... coli; while the Marraffini lab used a native minimal CRISPR array (Bikard et al., 2013), the Qi lab ... plasmids Stanley Qi’s lab demonstrated that a minimal, regulatable CRISPR system effectively silenced...transcription of one or more genes in E. coli. and in a mammalian cell line (Qi et al., 2013). Two important features...
Showing: 341 - 360 of 811 results