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Showing: 541 - 560 of 747 results
  1. Creating accessible biology activities in schools with BioBits

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    Blog Post
    ...References 1. Huang, Ally, et al. "BioBits™ Explorer: A modular synthetic biology education kit." Science...plasmids and their potential educational uses. We believe that biology education is something that should ... expensive tiny amounts of reagents are, how complicated (and again, expensive) the different machines...desire to create a set of low-cost, easy-to-use educational biology activities – that any school could afford...proteins without the need to handle a living, replicating organism. Furthermore, cell free systems can ...in adapting your research ideas into hands-on educational activities using the BioBits platform, please...BioBits™ Bright: A fluorescent synthetic biology education kit." Science Advances 4.8 (2018): eaat5107. PubMed...
  2. Antibodies 101: Fc Effector Functions

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    Blog Post
    ...into three main effector functions.  Figure 1: Fc effector functions in an immune response to a ...determination, don’t generally affect antibody applications like ELISAs or Western blots, they are key in...
  3. Sensing Neuronal Dopamine

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    Blog Post
    ...the brain where DA quantitation is desired (Figure 1). The probe perfuses liquid, which causes the passive...at a certain frequency, and this frequency can indicate behavioral state, for example, if someone is awake...
  4. New Viral Vectors - Winter 2025

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    Blog Post
    ... Table 1: New ready-to-use viral vectors in the Addgene repository  Name Serotype Category Depositor...
  5. Meet the New Addgene Board Members!

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    Blog Post
    ...enables the high-resolution tracking of more than 1 million cancer cells under drug treatment.” Stegmeier... interference. In the first two months since publication, the lab got over 100 requests for the plasmids...
  6. Hot Plasmids and Viral Preps - September 2021

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    ...difficult to modify in the past.   Figure 1: Identification and enrichment use of XMAS-TREE. a) Cells ...  After identification of ABE activity, XMAS-TREE can also be used to purify these modifications and work...ABE-targeted cells By Ellie Adams Single base modifications through ABE or CBE's have the potential ability...point mutations. They allow single-nucleotide modifications to edit DNA without requiring a double-stranded...mCherry and GFP expression to check for ABE’s. b) Quantification of base-editing efficiency using XMAS-TREE-...methods at various genomic loci in four different categories.     Brookhouser, N., et al. BMC Biol 18...MYC-dependent cancer cell lines. It can be applied for identification of essential MYC binding sites in a wide range...
  7. Another Pathway into Cells: iTOP

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    ...vesicles. Okada CY, Rechsteiner M. Cell. 1982 May;29(1):33-41. PubMed. Protein transduction: unrestricted...protein-only transduction method and its potential applications to CRISPR/Cas9 genome editing.   Protein-only...the HIV protein Tat. Although CPP fusions can translocate a cell membrane, the presence of the CPP may ...that components in the buffer used for protein purification must be helping the untagged protein enter cells...Diego D'Astolfo. CRISPR/Cas9: a potential application of iTOP Having tested iTOP using Cre-lox recombination...showed up to 70% resistance to diphtheria toxin, indicating a 70% frequency of biallelic mutations. Importantly...Importantly, hESCs retained their stemness, indicating that iTOP may be valuable for CRISPR/Cas9 stem cell...
  8. Fluorescent Proteins 101: Monitoring Cell Mobility Using Fluorescent Proteins

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    Blog Post
    ...do researchers track fluorescently labeled cells? 1. Epifluorescence microscopy This technique uses a ...of the immune system and its dynamics. References 1. Peters, Nathan C., et al. "In vivo imaging reveals... required for a growing organism to make the complicated transition from a clump of cells to a fully differentiated...relatively little tissue absorption, weak tissue scattering and small amounts of tissue auto-fluorescence...
  9. Hot Plasmids - June 2020 - Barcoded CRISPR Library, Sparse Cell Labeling, Calcineurin Reporter, and DNA Staining Dye Alternative

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    ...Article contributed by Susanna Bachle Figure 1: Initial steps in the CRISPR-pooled screening using...infection, because this setup allows for experimental replicates for each of the gRNAs. The idea was to assign...cassette is removed, the effector is expressed. By truncating one of the recombination sites in the construct...intermediate (d), and sparse (e) labeling of the calcium indicator, GCaMP6f, in the Drosophila optic lobe. Image ... reporter (blue) and stained with PI (pink) to indicate cell death. Image from Diessl et al., 2020. ...https://dx.doi.org/10.15698%2Fmic2020.04.713 Truncated TALE-fluorescent protein fusions as a DNA staining...protein to the DNA. They created plasmids for purification of tTALE-eGFP and tTALE-mCherry. In comparison...
  10. What Do I Do Now? Academic v. Non-Academic Career Decisions

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    Blog Post
    ...occur, but good performers move around easily  Table 1: Taking it a Step Further - Big Company v. Small Company...scientific and technical training is that these educational paths prepare you for a vast selection of career...tech transfer, management consulting, science communication, policy and the diverse options in nonprofit...science is much like industry but the “product” is publications—the pressure to produce is the same You get ...and teach students Collaborations may be less “complicated” - for example, easy to initiate a collaboration...is different about non-academia? Scientific publications are a nice to have, not a need to have Must ...every 3-6 years—a short and exciting ride Complicated matrix structures are common Small integrated...
  11. Three Tips for Preventing Viral Plasmid Recombination in Your Samples

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    Blog Post
    ... contain the full length plasmid.   Figure 1: The full lentiviral plasmid is expected to be >12... (AmpR) and origins of replication (ori and f1 ori) which allow it to replicate.   How can I prevent...the bacterial selection marker and origin of replication. During bacterial culture, only the plasmid with...the antibiotic resistance gene and origin will replicate, and the transgene will be lost. Over time, bacteria...the recombined plasmid is still visible. This indicates that the DNA prep contains a mixture of the full...
  12. Hot Plasmids September 2018 - Optogenetics, RNA Localization, Fluorescent Protein, and Base-editing Tools

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    ...extension. Now, they split EB1 into two halves (Fig. 1): one containing the microtubule binding domain and...cells, and has potential use for a wide range of applications in cellular biology. Van Haren J et al. Nature...versatile in vivo fluorescent reporter for rapid quantification of base-editing and Cas9 cleavage activity ...plasmid that allows for rapid fluorescence-based quantification of base editors that utilize dCas9 fused to... The reporter constitutively expresses eGFP to indicate reporter abundance, and mCherry fluorescence is...frame-shift mutation within the mCherry reporter. Quantification of editing efficiencies simply involves tracking...
  13. Hot Plasmids: FRET-Based Biosensors

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    Blog Post
    ...variants. This resulted in the construction of redCALWY-1, a red-shifted FRET sensor for zinc using variants...Neurobiology has been working on genetically encoded indicators of calcium and other small molecules since the...lymphocytes, too, making them a versatile tool for application in both neuroscience and immunology. Don’t be...imaging for beginners Griesbeck says his calcium indicators can be used in mouse, Drosophila, C. elegans,...give it a shot. “Beginners sometimes think it’s complicated, but actually it is very good,” he said. “It ...his team is now applying it to improve upon an indicator they developed and published in 2010 for visualizing...
  14. Plasmids 101: Gram Negative and Positive Bacteria

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    ...heat-fixed smear with the crystal violet stain for 1 minute. Rinse the slide briefly with tap water. Flood...ll be talking about the ins and outs of this classification system, including its history, biology, and...repeatable phenomenon, Gram began using it as a classification system. Eventually, any bacteria that retained...permeable to different classes of antibiotics. The classification system is also useful in a laboratory setting...bacteria type. The gram positive and negative classification system is incredibly helpful in visualizing...stepping into a lab.   Anna Kamens is a science communication summer intern at Addgene and a rising third-...
  15. Visualizing Translation at the Single Molecule Level

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    ... cell types and physiological states. References 1. Ingolia, Nicholas T., et al. “Genome-wide analysis... While ribosome profiling co-opts the physical location of the ribosome, TRICK (Translating RNA Imaging...development, the osk-TRICK reporter was double labeled, indicating translational repression. During later stages...ribosomes after initiation, to calculate a ribosome translocation rate of ~3.5 codons/second. They also explored...Resources the Addgene Blog Learn More about SunTag Catch up on Your GFP Background Choose the Brightest Fluorescent...
  16. Rewiring Metabolic Circuitry with CRISPR RNA Scaffolds [Video]

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    ...Transcriptional Programs with CRISPR RNA Scaffolds. Cell, 160(1), 339-350 (2015). PubMed. Find the Plasmids @Addgene... interference (CRISPRi) model consists of a catalytically dead Cas9 protein (dCas9) that lacks endonuclease...library of characterized aptamers and supporting publication: http://www.freebase.com/base/aptamer Cruz-...
Showing: 541 - 560 of 747 results