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  1. Six Spooky Science Stories and Halloween at Addgene

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    Blog Post
    ...science stories. Here are some of our favorite spooky science stories. Six spooky science stories Zombie...Plasmid pumpkins, team costumes, and spooky science stories. Yes, please! At Addgene, we love finding ways ...Vampire bacteria Vampirovibrio chlorellavorus is a predatory bacteria that attaches to the cell wall of green...forcing it out of hiding to become exposed to predators. Hungry birds spots the “caterpillar” and then... "Back from the dead; the curious tale of the predatory cyanobacterium Vampirovibrio chlorellavorus." ...
  2. New and Upcoming Viral Vectors - September 2019

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    Blog Post
    ...ve added many new tools to our inventory of ready-to-use viral vectors. Here are some of the AAV we have...Testing AAV inventory for the entire collection! We are expanding our entire control AAV inventory to give...Calcium Sensors). We are expanding the inventory of these vectors to more serotypes. We currently package...GCaMP7s. See all our biosensors inventory, and check out our latest vectors below: pGP-AAV-syn-jGCaMP7f-...addition to our inventory of Cre-dependent GABA sensors. See all our GABA sensor AAV inventory here. pAAV.hSynap.iGABASnFR...support by growing our inventory of recombinases and recombinase-dependent vectors. We recently released...pENN.AAV.hSyn.Cre.WPRE.hGH (105553-AAV5) Dre vector AAV phSyn1(S)-DreO-bGHpA (50363-AAV5) Flp vectors pAAV-EF1a-mCherry-IRES-Flpo...
  3. The Golden Stopwatch Award: Recognizing Facilitators of Research

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    Blog Post
    ...guarantee certain rights and protections for depositor and requestor alike. That’s why Addgene works closely...closely with TTOs to help protect our depositors’ intellectual property, and to help requesting institutions...California Institute of Technology Cold Spring Harbor Laboratory  Dana-Farber Cancer Institute  Fred Hutchinson...
  4. New and Upcoming Viral Vectors - June 2019

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    Blog Post
    ...ve added many new tools to our inventory of ready-to-use viral vectors. Here are some of the AAV we have...pEF1a-DIO-FLPo-WPRE-hGHp Other new viral vectors New optogenetics inhibitors Plasmid Serotype Name 99039 ...AAV1 pAAV-ihSyn1-DIO-tTA Viral vectors coming soon! These vectors listed below should be released at... of our viral vectors blog posts Find tips for preparing AAVs Download our viral vectors 101 eBook Resources...few months. You can also browse our entire AAV inventory. Our new AAVs include: Control AAVs for serotype...always excited to add new control AAVs to our inventory since we know that scientists need these tools...popular control AAV encoding GFP. Check out our inventory of serotype testing AAV New control AAVs Plasmid...
  5. New and Upcoming Viral Vectors - Spring 2019

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    Blog Post
    ...ve added many new tools to our inventory of ready-to-use viral vectors. Here are some of the AAV we have... used in conjunction with optogenetic activators and inhibitors that respond to blue light. We recently...GABAergic interneurons. These vectors can also be used as the control vectors for experiments encoding a ...pAAV-hSyn-mCherry at Addgene. Viral vectors coming soon! These vectors listed below should be released at... of our viral vectors blog posts Find tips for preparing AAVs Download our viral vectors 101 eBook Resources...far in 2019. You can also browse our entire AAV inventory! Our new AAVs include: pGP-AAV-syn-FLEX-jGCaMP7b-WPRE... Addgene. GABA sensor AAV GABA is the primary inhibitory neurotransmitter in vertebrates, but methods ...
  6. Popular Retroviral Vectors and Their Uses in Scientific Research

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    Blog Post
    ...block Entry vectors and 5 lentiviral Destination vectors. These vectors can induce combinatorial constitutive...research purposes, retroviral vectors have been developed into ‘split-vector systems’ by separating viral...and expression of these vectors when used in experiments. Retroviral vectors make up a large toolbox ...Gamma-retroviral vs. lentiviral vector systems Gamma-retroviral vectors have a relatively high transduction... many more useful viral vectors available at Addgene: Follow our viral vector blog posts for updates on...tips for using retroviral vectors in your experiments. Gamma-retroviral vectors Popular gamma-Retroviral...Transfer Vectors   Expressing your gene of interest pMKO.1 GFP (Plasmid #10676) Retroviral vector for cloning...
  7. PEI Calculator for Planning AAV Packaging Transfections

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    Blog Post
    ... download the PEI calculator for AAV packaging Use the PEI transfection calculator for AAV packaging ...corresponding column in the calculator spreadsheet: We hope that this calculator will make it easier to plan...for AAV packaging, considering using this PEI Calculator. AAV packaging typically requires transfecting...right, you need to do a few calculations. This calculator can do the math for you and it’s simple to make...whole experiment And here’s the equation the calculator uses to give you the μl needed of each plasmid...experiments. Let us know what you think about the calculator in the comments section below. References 1....Production of Recombinant Adeno‐Associated Viral Vectors for In Vitro and In Vivo Use." Current Protocols...
  8. Fluorescent Proteins 101: History of Fluorescent Proteins

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    Blog Post
    ... adapted them for use in the laboratory. The discovery of GFP The story of how fluorescent proteins like...Aequorea victoria (Figure 1) in molecular detail. On the underside of the “umbrella” of A. victoria there...turns out, he was right! He began to study the A. victoria gene responsible for encoding GFP, and, in 1992...sequence. Soon after that, in 1994, Prasher’s collaborator Martin Chalfie expressed GFP in exogenous organisms...studying it grew. In particular, studies in the laboratory of UCSD biochemist Roger Tsien resulted in much...
  9. 5 Science Rap Videos & Their Creator: Tom McFadden

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    Blog Post
    ...Science History Rap Battle A great example of science story telling following the unfortunate story of Rosalind...and their importance in understanding biological history. 4. Please Don't Kill My Hive Beautifully filmed...with us. Tom McFadden is a YouTuber and science educator looking for creative ways to implement the next...
  10. Four Factors that Differentiate the Stem Cell Field

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    Blog Post
    ...When our Director of Biology, Lianna Swanson, suggested that I might be able to attend the 10 Years of...Oct4, Sox2, Klf4, and cMyc (the so called OSKM factors). As the Yamanaka lab's primary Addgene contact... forward to seeing how the sharing of his OSKM factors have affected the stem cell community – a community...the first clinical trial with iPSCs with his collaborator Takahashi in 2014 – just 8 years after the OSKM...control process alone takes nearly a year. Addgene depositor Juan Carlos Izpsua Belmonte said it took the joint...effort of five post-docs to implant human kidney progenitors into a pig. In stark contrast to recent genome...the scientists I've already mentioned, Addgene depositors Marius Wernig, Kristin Baldwin, Kathrin Plath...
  11. Pairing CombiGEM and CRISPR for Combinatorial Genetic Screening

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    Blog Post
    ...CombiGEM lentiviral vector backbone pAWp12 (Figure 2). Cloning from the pAWp28 storage vector to the pAWp12 ...addition to the combinatorial expression of other genetic elements including transcription factors (Cheng et...indicated below and pool-clone them into the pAWp28 storage vector (Figure 1): Forward oligo: 5’- CACCGNNNNNNNNNNNNNNNNNNNGTTTGGGTCTTCGAGAAGACCTATTCXXXXXXXXC...barcode, respectively. Once cloned into the storage vector, the pooled, barcoded gRNA library is now ready... an easy-to-use tool to analyze the complex combinatorial genetic networks underlying your favorite biological...screening are vastly useful for mapping the combinatorial genetics that underlie complex regulation in...barcoded gRNA libraries that can be used to combinatorially modify the genome, screen for a particular ...
  12. History of CRISPR Cas - A tale of survival and evolution

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    Blog Post
    ...Initial experiments exposed S. thermophilus to predatory phages to test if the exogenous DNA would be incorporated...system that utilized various cas genes not only to store a record of invading phages but to also destroy ...race" between phages and prokaryotes; the ultimate victor will be the species who has the strongest will ...
  13. Viral Vectors 101: AAV Serotypes and Tissue Tropism

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    Blog Post
    ... growth factor receptor 1 (FGFR1)3 αVβ5 and α5β1 integrins3 Hepatocyte growth factor receptor (HGFR)3 ...3 AAV receptor (AAVR)2 Epidermal growth factor receptor (EGFR)3 AAV8 Laminin receptor (LR)3 ... Table 1: AAV capsids and receptors. Capsid Primary receptor Coreceptor AAV1 α2,3-/α2,6 N-linked...Viral Vectors 101: An Introduction to AAV Viral Vectors 101: AAV Variables that Matter Viral Vectors 101...serotypes have a primary cellular receptor and sometimes one or multiple coreceptors, which may be present on ...acids1 AAV receptor (AAVR)2   AAV2 Heparan sulfate proteoglycan (HSPG)3 AAV receptor (AAVR; not ...3 Laminin receptor (LR)3 CD93 AAV5 2,3-N-linked sialic acid4 AAV receptor (AAVR)2 Platelet-derived...
  14. Viral Vectors 101: Gamma-Retroviral Packaging Systems

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    Blog Post
    ...Addgene blog Viral Vector Elements The Retroviral Life Cycle Popular Retroviral Vectors and Their Use in...  Frequently asked questions about γ-retroviral vectors How do engineered γ-retroviruses differ from lentiviruses...Woodchuck hepatitis virus post‐transcriptional regulatory element; sequence that stimulates the expression...was originally published in 2018, in the Viral Vectors 101 eBook, 1st edition.  References and resources...
  15. Twenty Years of Sharing: Addgene's Viral Vector Service

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    Blog Post
    ...been finding and sharing stories unique to our repository and resources. As editor of Addgene’s eBooks — ...amount of vectors available and number of requests tell only part of the story. Viral vectors are, after...GCaMP-encoding viral vectors available in the repository. GCaMP, a calcium indicator (biosensor, by Addgene...information from requestors and depositors, and identifying trends in our own repository data, giving us...released Viral Vectors 101 2nd edition — I was incredibly excited when we picked our viral vector service as... as one of those stories. Viral vectors are viruses engineered to be safely used to deliver a genetic ...titer. Addgene’s Viral Vector Service Besides being complex to use, viral vectors are also difficult both...
  16. Q&A With Julie Cicalese, the Newest Member of the Addgene Board of Directors

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    Blog Post
    ...welcome Julie Cicalese to the Addgene Board of Directors. Cicalese served as the Chief Human Resource Officer...School. The addition of Cicalese to the Board of Directors brings human resources experience and insight ...included the Belmont Human Rights Commission and mediator for the Massachusetts small claims court summary... Meet the other members of Addgene's Board of Directors Find careers at Addgene ...
  17. Viral Vectors 101: Parts of the AAV Packaging Plasmid

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    Blog Post
    ...proteins from the AAV2 serotype are used to package vector genomes flanked by AAV2 ITRs into a capsid other...Strohl WR (2017) Adeno-Associated Virus (AAV) as a Vector for Gene Therapy. BioDrugs 31:317–334 . https:/...for Targeting and Improving the Efficacy of AAV Vectors. Molecular Therapy - Methods & Clinical Development...Adeno-Associated Virus Genome Interactions Important for Vector Production and Transduction. Human Gene Therapy...
  18. Safe Port in a Storm...How Addgene is Weathering the Pandemic

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    Blog Post
    ...These are stormy times. It feels like we’re being buffeted by wind and waves and sometimes wonder if ...would be fully open and available to industry requestors as well. This is a time when we need as much ...materials via Addgene. Perhaps if each of many grantors supporting research could provide Addgene with...Initiative was able to step in to be our “port in the storm.”  "Addgene is a unique resource for scientists ...research is accelerating essential research in laboratories all around the world." We thank the Chan Zuckerberg...whatever lies ahead this year. We can see signs of the storm passing. We’ve recently piloted Addgene’s new cloning...cloning grade DNA service, and viral vector distribution is recovering from the pandemic-related slowdown...
  19. Viral Vectors 101: Parts of the AAV Transfer Plasmid

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    Blog Post
    ...plasmid. Parts shown in grey are optional cis-regulatory elements.   Key elements of an AAV plasmid...outside of the ITRs does not get packaged in the AAV vector. The cloning capacity between the ITRs is ~4.4 ...plasmid harbors non-coding sequences. Other cis-regulatory elements Next let’s talk about some of the elements...Woodchuck Hepatitis Virus (WHP) Posttranscriptional Regulatory Element (WPRE) forms a tertiary structure when... the Addgene blog Learn more about basic viral vector elements Read about four considerations for the...
  20. Enabling high school research at the Journal of Emerging Investigators

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    Blog Post
    ...we introduce you to the Journal of Emerging Investigators, an open-access journal that enables high school... the interview with the Journal of Emerging Investigators Podcast breakdown Intro Chapter 1 - Introduction...Olivia Ho-Shing, and the Journal of Emerging Investigators. Chapter 2 - Getting high school students and... building curricula and developing one-on-one mentorship programs. Chapter 6 and Outro - Interview with...
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