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  1. PEI Calculator for Planning AAV Packaging Transfections

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    Blog Post
    ...calculator for AAV packaging Select the plasmid molar ratio you would like to use for your AAV packaging ...names of the plasmids you plan to use Enter the base pair size of those plasmids Enter plasmid concentration...Using AAVs AAVs Are Great Tools for Gene Expression in Mammals Resources on Addgene.org Find AAV Packaging...PEI transfections for AAV packaging, considering using this PEI Calculator. AAV packaging typically requires... to making AAV packaging a little easier! Click here to download the PEI calculator for AAV packaging ...ratios below: 1 Transfer Plasmid : 1 pHelper: 1 RepCap OR 3 Transfer Plasmid : 5 pHelper: 2 RepCap Select...of each plasmid needed per dish or stack. Calculations are based on using 28 μg of total plasmid (Transfer...
  2. Addgene’s Viral Service - Why Virus? Why Now?

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    Blog Post
    ...relevant plasmid depositors and their institutions to distribute viral preps derived from plasmids in the...distributing a small but growing catalog of ready-made AAV and Lentiviral preps. This new Viral Service represents...largest new initiative since we started distributing plasmids in 2004. We’ve already distributed over 500 viral... virus. Addgene is a 501(c)3 nonprofit and our plasmid service was started based on donations. That seed...depositors. Over 3,000 laboratories are sharing plasmids (with 16 labs currently sharing viral preps) through... lab from the Allen Institute have supported the AAV initiative from the beginning and have worked closely...Research Campus have provided valuable insight into AAV production. Finally, we are blessed to have an incredibly...
  3. Droplet Digital PCR for AAV Quantitation

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    Blog Post
    ...Since Addgene began producing AAV vector preparations, we have used quantitative PCR to evaluate the ...powerful tool for quantifying AAV for some time now. When titrating AAV by qPCR, viral DNA is amplified...posts related to viral vector protocols and tips Read all of our viral vectors blog posts Resources on...Learn our protocol for AAV titration by qPCR Browse our collection of viral vector related protocols Learn... is where droplet digital PCR (ddPCR) comes in. AAV titering using quantitative PCR Before we dive into...reactions with known quantities of DNA. Additionally, an AAV reference, a virus with a known titer, can be used...and both results would be valid. This is why the AAV reference is critical. It allows you to determine...
  4. Cpf1 Update: Comparison to Cas9 and NgAgo

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    Blog Post
    ...deliver in low-capacity vectors like AAV. AAV (adeno-associated viral vectors) are commonly used for in..., these vectors have a low genetic capacity of ~4.5 kb. At 4.1 kb, SpCas9 barely fits into AAV when you...previously used SaCas9 (1053 aa/3.2 kb) with AAV vectors for efficient postnatal editing. LbCpf1 and AsCpf1...SpCas9. These nucleases should fit well into AAV vectors, especially given that Cpf1 gRNAs are also shorter... is well suited for genome editing.  Find Cpf1 Plasmids at Addgene   Image attribution: Zetsche...potential to eclipse any of the CRISPR nucleases in AAV-based applications. Get More Cpf1 Background Here...Biotechnol. 2016 Jun 6. PubMed PMID: 27272384 Find plasmids from this publication at Addgene. 2. Kleinstiver...
  5. Hot Plasmids February 2024

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    Blog Post
    ...an engineered adeno-associated virus (AAV) vector named AAV.CAP-Mac for non-invasive systemic gene delivery...of the new plasmids, antibodies, and viral preps in the repository through our Hot Plasmids articles.  ...all applications. Addgene’s plasmid collection includes over 10,000 plasmids with a FLAG tag (!), but did...from variable region VIII of AAV9-X1.1 to that of AAV1. This viral vector has brain endothelial cell-specific...Importantly, AAV1-X1 is not neutralized by pre-existing antibodies against AAV9-based vectors (and vice ... enhanced brain potency of AAV-PHP.eB.    Figure 4: AAV9-X1 and AAV9-X1.1 efficiently transduce... variants AAV.CAP-Mac for systemic gene transfer in primate brains Endothelial-specific AAV delivery Recombinant...
  6. Plasmids 101: FLEx Vectors

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    Blog Post
    ...of Genome Engineering Using FLEx AAV Vectors? Learn about Viral Vector Elements Read Our Primer on Optogenetics...improvement of optogenetic adeno-associated virus (AAV) vectors. Listed below are a few additional uses for ...In a previous post from our Plasmids 101 series, we learned how the Cre-loxP recombination system can... even in the presence of Cre recombinase. This plasmid now specifically drives expression of mCherry instead...Since most optogenetic reporters are delivered using AAV injection, the majority of the cells surrounding ...2286602. PubMed Central PMCID: PMC3406316. Find FLEx plasmids from these Addgene depositors: Ed Boyden Bernardo... plasmids...
  7. What's New in CRISPR - Spring 2019

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    Blog Post
    ...CRISPR plasmids available at Addgene. We will still periodically focus on specific CRISPR plasmid tools...Biology Find plasmids containing these base editors Spatially and temporally regulated AAV-based genome...developed another AAV toolkit - this time using the Staphylococcus aureus Cas9 (SaCas9). This AAV-based genome...Molecular Neuroscience Find the AAV-based SaCas9 genome editing plasmids String assembly gRNA cloning...CRISPR guide Find CRISPR plasmids by function Find recently deposited plasmids ...paper in Nature Communications Find the Cas12b plasmids  Plant base editing with a Cas9-adenosine deaminase...single step gRNA multiplexing system that generates vectors containing high numbers of gRNAs in one overnight...
  8. Hot Plasmids: Spring 2025

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    Blog Post
    ... and AAV plasmid sets launching later this year!  Find Addgene's own Lentiviral backbone plasmids here...of the new plasmids, antibodies, and viral preps in the repository through our Hot Plasmids articles. ...a scientist's toolkit is the empty plasmid backbone: the DNA vector that contains everything needed to...Explore our empty and EGFP retroviral plasmid set, our bacterial plasmid set for expressing tagged proteins...for successful experiments or therapies. Using AAV vectors with enhancers that drive cell-type-specific ...colleagues characterized a series of new enhancer-AAV vectors targeting specific classes of cortical and striatal... Dynamic protein labeling with TurboCas Enhancer-AAV viral preps targeting interneurons Glutamate indicators...
  9. Hot Plasmids - August 2020

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    Blog Post
    ...subset of the new plasmids and viral preps in the repository through our hot plasmids articles. These articles...recent plasmid deposits and we hope they'll make it easier for you to find and use the plasmids you need...They generated plasmids tagged with EB3 to mark the growing tips of microtubuli and plasmids tagged with ...and dCas9-VPR targeting plasmids can be found at Addgene. Check out these plasmids for piggyBac gRNA delivery...highlights from recent CRISPR plasmids. To find all of the CRISPR plasmids available from Addgene, head... Find the plasmids at Addgene The MoClo CRISPR/Cas Toolkit for plants includes 95 plasmids consisting...and dicots. Find the plasmids at Addgene! CRISPR RNP electroporation and AAV donor infection (CRISPR-READI...
  10. Viral Vectors 101: Transductions

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    Blog Post
    ...Production at Addgene Viral Vectors 101: What is a Virus? Viral Vectors 101: Viral Vector Elements ...adenovirus, or AAV. Then, your desired DNA to be integrated can be cloned into the vector that you have...non-integrating (adenovirus and AAV) but can still express episomally long-term (AAV). If you perform a lipid-based...nucleic acid cargo of your choice. First, a viral vector is selected to perform the transduction with: either...produced, and viral particles are packaged, when the vector is expressed. Once the design and construction ... it’s time to make virus! The constructed viral vector containing the cargo of interest is then typically...typically transfected along with viral packaging plasmids into a viral production cell line, usually HEK-293...
  11. CRISPR 101: Mammalian Expression Systems and Delivery Methods

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    Blog Post
    ...elements are inserted into an AAV transfer vector and used to generate AAV particles. Transient or stable... in a single lentiviral transfer vector or separate transfer vectors. May contain reporter gene (e.g. ...non-dividing cells. AAV is least toxic method for in vivo viral delivery. Cas9 mRNA and gRNA Plasmids containing...add a tag, you will also need to deliver a donor plasmid or single-stranded DNA oligonucleotide, so you ...Components of System Application Mammalian expression vector Promoter driving Cas9 expression can be constitutive...generate stable cell lines. Packaging and Envelope plasmids provide the necessary components to make lentiviral...for conducting genome-wide screens using CRISPR. AAV transduction Only compatible with SaCas9 (packaging...
  12. Viral Vectors 101: What is a Virus (and a Viral Vector)?

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    Blog Post
    ...separate plasmids and expressed via cells cultured with the vectors. This allows the viral vectors to reproduce...Viral Vectors 101: Viral Applications Viral Vectors 101: Viruses as Biological Tools Viral Vectors 101:...create far safer viral vectors that can be used in BSL-1 or BSL-2 labs. Viral vectors are viruses that have...increase the viral vector’s carrying capacity. In order to allow the viral vectors to reproduce when experimentally...from: AAVs, lentivirus, gamma retrovirus, and adenovirus. And now that you know what viral vectors are,...of Viral Vectors 101 posts about each type, so be sure to check our blog, or our Viral Vectors 101 eBook...101: Viral Vector Elements More resources from Addgene The AAV Data Hub Addgene's Viral Services Addgene's...
  13. AAV Titration by qPCR Using SYBR Green Technology

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    Protocol
    ...the assay multiple plasmids containing ITR were tested. Plasmid #59462 is one plasmid that gave reliable...genome-containing particles in an AAV prep using qPCR, SYBR Green Technology, and Addgene’s AAV Titration protocol. ... Protocols AAV Titration by qPCR Using SYBR Green Technology AAV Titration by qPCR Using SYBR Green Technology...also like... Viral Vector Guides Virus Blog Posts Mol Bio Protocols Introduction The AAV Titration protocol... calculated using this plasmid, but will change if you use a different plasmid. Sample Calculation Size...Size in bp of Addgene plasmid #59462 : 6208 bp Concentration of Addgene plasmid #59462 : 1.07 μg/μL Molecular...consistent results. Use the recommended plasmid, or test multiple plasmids to find a suitable one. Some labs...
  14. Reflections and Looking Ahead

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    Blog Post
    ...response to a demand for more AAV viral vector options, we launched AAV Packaged on Request, a service... and simplifies your viral vector options. Almost any AAV transfer plasmid in our repository can now be...accelerating scientific discovery. Over 150,000 plasmids empowering researchers worldwide. Countless breakthroughs...countries enriched our repository with 15,020 new plasmids — a testament to the scientific community's commitment... our collection, such as blogs describing viral vector serotypes, or hundreds of Data Hub reports detailing...next-generation sequencing, setting new standards for plasmid quality control. Through our partnership with the...toward giving you more choice in how you receive plasmids — as DNA or bacterial stabs — ‌and reinventing...
  15. Addgene's Top 10 Blog Posts of 2015

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    Blog Post
    ...Made in Heaven: CRISPR/Cas9 and AAV Adeno-associated viral (AAV) vectors are useful for in vivo gene delivery...protein of interest. 4. Plasmids 101: Blue-White Screening Getting a lot of empty vector contaminants in your...CRISPR mediated genome engineering. 10. Plasmids 101: Control Plasmids Need help thinking about the types ...Scientists eBook Download the Plasmids 101 3rd Ed. eBook Read the Most Recent Plasmids 101, CRISPR 101, and Career... two eBooks (Management for Scientists and the Plasmids 101 2nd ed, the 3rd edition has now been released...top of the many developments in science and the plasmids, technologies, and researchers behind them. As...most popular posts continue to be those from our Plasmids 101 and CRISPR 101 series. These posts aim to ...
  16. Addgene Protocols Go Viral: AAV Purification and Titration

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    Blog Post
    ...page! AAV purification by iodixanol gradient ultracentrifugation This video goes over AAV vector purification...  Check out the AAV Purification protocol page for more detailed instructions. AAV titration by qPCR... given AAV preparation. For detailed instructions and calculations on how to prepare a plasmid stock used...service in 2016, Addgene has shipped thousands of AAV and lentiviral preps to scientists around the world...strategy to confirm the identity and purity of all AAV viral lots. Aligning with Addgene’s mission to “... used to generate a standard curve, visit the AAV Titration by qPCR written protocol page. Getting ...
  17. Protocols for Molecular Biology, Plasmid Cloning, and Viral Preps

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    Protocol
    ...complicated procedures. Plasmid Cloning Protocols for constructing and analyzing your plasmids. Virus Protocols...Amplify CRISPR pooled-plasmid libraries Diagnostic Restriction Digest Verify a plasmid using restriction ...polymerase pLKO.1 - TRC Cloning Vector Cloning protocols for using the pLKO.1 vector, a backbone used by the ... that can be used for basic molecular biology, plasmid cloning, and titering and testing your viral preparations...Bacterial Glycerol Stocks Store bacterial strains or plasmids for long term use Watch the Video! DNA Purification...spectrophotometer Restriction Digests Cut and analyze plasmid DNA with restriction enzymes Agarose Gel Electrophoresis... the Video! Sequence Analysis Verify important plasmid features using sequence analysis RNA Extraction...
  18. Hot Plasmids and Viral Preps - March 2021

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    Blog Post
    ...CRISPR Plasmids and Resources page.  Plasmids for delivering CRISPRi components by a single AAV vector...with AAV-S5E2-GCaMP6f, now available as a ready-to-use viral prep in AAV1!  New ready-to-use AAV prep ...subset of the new plasmids and viral preps in the repository through our hot plasmids articles. These articles...recent plasmid deposits and we hope they'll make it easier for you to find and use the plasmids you need...highlights from recent CRISPR plasmids. To find all of the CRISPR plasmids available from Addgene, head...Gether lab, now available as ready-to-use AAV vectors.   ...inducible degron system for C. elegans New CRISPR plasmids New items from the viral service Epigenetic ...
  19. Plasmids 101: Transformation, Transduction, Bacterial Conjugation, and Transfection

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    Blog Post
    ...don't exactly "eat" plasmids as depicted in this comic, when a bacterium uptakes a plasmid, the genes on the... the plasmid can give them different phenotypes. For example, this plasmid encodes a green fluorescent...phagemids, a DNA cloning vector that contains both bacteriophage and plasmid properties. The phagemids...lentiviral and Adeno Associated Viruses (AAV). Lentiviral and AAV can be used to create both transient cell...can find all kinds of different lentiviral and AAV plasmids as well as ready-to-use viral preparations at... information on viral vectors, including transduction download our Viral Vectors 101 eBook. Bacterial ... Read all of our Plasmids 101 blog posts Check out all of our blog posts on plasmid cloning Resources...
  20. Making CRISPR Plasmids Using Fragmid

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    Blog Post
    ...modular vector assembly process designed for a quick, plug-and-play approach to cloning CRISPR vectors (McGee...for each module, generate the vector file, and quickly clone their vector of interest. And it truly is ...destination vectors for various delivery methods, along with compatible inserts. All destination vectors contain...heavy lifting out of CRISPR vector design, making it easier to get the vectors that are just right for your...restriction digest, and then plasmid sequencing if you can. To quote Doench, “Whole plasmid sequencing is just ...correctly banded clones for plasmid sequencing and found 98% of the plasmids were perfectly correct. Because...least one plasmid was the correct sequence for every individual assembly. What destination vectors are available...
  21. Viral Vectors 101 eBook 2nd Edition

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    Blog Post
    ...edition of our Viral Vectors 101 eBook!  This practical guide to using viral vectors in the lab is a helpful...introduction to viral vectors and their elements; resources on different types of vectors, capsids, and tools...everything from producing your own vectors in the lab to optimizing AAVs in your experiment.      Our second...en español Plasmids 101 eBook 4th edition Resources on addgene.org  Addgene's Viral Vectors Guide Addgene's...
  22. Celebrate Open Data Day with Addgene’s AAV Data Hub!

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    Blog Post
    ...injection site from the AAV data hub. How to share your AAV data Do you use Addgene AAV tools and want to... Using AAV Technologies Using AAV for neuronal tracing Resources on Addgene.org Read our AAV guide Browse... Browse all  AAV vectors Find ready-to-use AAV preps ...growing group of Addgene AAV data sharing champions? If you’ve recently used Addgene AAV tools, we invite you...contributed to the AAV Data Hub. If you haven’t yet, we encourage you to share your AAV data on the hub,... on AAV data hub! Related resources on the Addgene blog Important Considerations When Using AAVs Three... celebrate open data sharing than with Addgene’s AAV Data Hub! We launched this pilot in 2019 as an open...
  23. Meet the New Addgene Board Members!

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    Blog Post
    ...over 100 requests for the plasmids and the lab eventually deposited these plasmids at Addgene. While deposits...project to develop an AAV-based COVID-19 vaccine.  Vandenberghe’s work with AAVs led to many interactions...Baradaran’s expertise in viral safety, gene therapy vector development, vaccine development, and assay technologies...The mission to share critical reagents such as plasmids and viral stocks for researchers around the world...was compelled to be part of that.” He’s deposited AAV constructs for gene delivery. In 2018, he interviewed...Melina Fan and former Associate Director of Viral Vectors Karen Guerin for the journal Molecular Therapy....
  24. Hot Plasmids - October 2020

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    Blog Post
    ... as AAV5. Find the AAV prep here The red-shifted calcium sensor jRGECO1a is now available as AAV-PHPeb...subset of the new plasmids and viral preps in the repository through our hot plasmids articles. These articles...recent plasmid deposits and we hope they'll make it easier for you to find and use the plasmids you need...display (FingRs), Xue Han’s lab has developed AAV vectors to selectively visualize excitatory and inhibitory...highlights from recent CRISPR plasmids. To find all of the CRISPR plasmids available from Addgene, head...need. If you'd ever like to write about a recent plasmid deposit please sign up here.  Here's what you'll...fluorescence from other regions of the cell. By combining vectors expressing different fluorescent proteins targeting...
  25. Addgene: The First Twenty Years

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    Blog Post
    ...ready-to-use viral vectors from some of our most popular lentiviral and AAV vectors, as well as developing... 2025, we’ll be expanding our viral vectors service to include AAV Packaged on Request! “I love Addgene...frustrated by the difficulty of accessing published plasmids from other scientists. She, Kenneth Fan, and Benjie...nonprofit that would facilitate the sharing of plasmids between scientists. The service would allow people...Addgene before we were a “labhold” name. Our first plasmid request came on September 8, 2004, for pcDNA-p160MBP... our first major repository milestone — 10,000 plasmids deposited and available — and nearly seven before...possible for scientists to both deposit and request plasmids, was a major focus of our first decade. We did...
  26. Hot Plasmids - March 2020 - base editors, GEVI, MoClo, and optogenetics

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    Blog Post
    ...highlight a subset of the new plasmids in the repository through our hot plasmids articles. These articles ...recent plasmid deposits and we hope they'll make it easier for you to find and use the plasmids you need...like to write about a recent plasmid deposit please sign up here.        AAV delivery of split base editors...editors Article contributed by Jennifer Tsang AAVs are a great gene therapy delivery mechanism, but their... Figure 1: The base editor is split into two plasmids and co-transfected into cells for reconstitution...transduced at levels similar to that of a single AAV expressing GFP. The lab tested the base editors in...overcome this overlap, Yiyang Gong’s lab created two plasmids containing a red-shifted Ace-mScarlet, a fusion...
  27. Quickest Way to Deposit Plasmids: The Deposit Spreadsheet

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    Blog Post
    ...calcium.”  Primary Vector Type The vector type should describe how your plasmid is intended to be used...lentiviral, retroviral, and AAV plasmids, choose the NEB Stable strain. For plasmids containing the ccdB gene...deposits with more than 10 plasmids is to use our deposit spreadsheet?  Our plasmid deposit process can be... Send plasmid information to Addgene Material Transfer Agreement (MTA) approval  Send plasmids to Addgene...spreadsheet and copy and paste your plasmid data directly into our file, one plasmid per row, as outlined by the... Data Field Description Plasmid Name Use a descriptive plasmid name and match the name as it ...application of the plasmid and will help a scientist outside your field understand if this plasmid will work for...
  28. 15 Hot Plasmids from 2017

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    Blog Post
    ...highlight a subset of the new plasmids in the repository through our hot plasmids articles. These brief articles...articles provide a synopsis of a plasmid or group of plasmids' functions and applications. We hope that... you to find and use the plasmids you need. You can find all the hot plasmids from 2017 below. With over...over 50,000 plasmids, we can't write posts for every great plasmid that comes into the repository, but...write about your plasmids in a future blog post. No time to read? Listen to our hot plasmids segment on the...this cell type. To this end, they constructed AAV plasmids bearing one of the distal-less homeobox 5 and...for the research community. You can find the AAV vectors for infecting GABA-ergic interneurons here. ...
  29. An Introduction to Adenovirus

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    Blog Post
    ...Viral Vectors 101: Viral Applications Adenoviral Vector Production and Troubleshooting Viral Vectors 101...fact, of how adenoviral vectors work. What are adenoviruses?   Adenoviral vectors are commonly derived from... makes sense that vectorization strategies include creating an AdV transfer plasmid with the E1 and E3...usually present in the transfer plasmid for the majority of adenoviral vector systems used in research, they...adenoviral vectors all have a genomic capacity that is much higher than other viral vectors (tens of kilobases... only 4.7 kb for AAV, 9 kb for retroviruses). The tradeoff is that adenoviral vector expression is very...has been reported when using vectors, and immune inactivation of the vector can still occur even in the...
  30. New Neuroscience Tool: The iGluSnFR3 Glutamate Sensor

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    Blog Post
    ...variants come in AAV packaged virus aliquots being deposited at Addgene. Other plasmids and pAAVs can be ordered... domain in the mammalian expression pMinDisplay vector. GPI contains a C-terminal glycosylphostidylinositol...iGluSnFR3 variants: pRSET: Bacterial expression vector, use with IPTG induction to express soluble protein...protein CAG: Generic strong promoter. Formulated as AAV-DJ for neuronal expression. CAG-FLEX: CAG promoter...is also available in several ready-to-use viral vectors.    References and Resources Additional Resources... Biosensors Browse All Fluorescent Proteins Find AAV Tools References Marvin, Jonathan S., et al. “An...
  31. Expanded Access to Rabies Plasmids

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    Blog Post
    ... ship rabies plasmids and viral vectors containing genetic elements from rabies plasmids to international...once approved, allows Addgene to ship plasmids or viral vectors containing sequences from rabies and all...! You can also browse tools for AAV tracing, made from rabies plasmids deposited by Ian Wickersham’s lab... materials in our repository, including rabies plasmids, are export-controlled materials in the USA, where...export license applications for VSV and SARS-COV-1 plasmids. Export control license process    An export ...  Timelines  We have offered VSV and SARS-COV-1 plasmids under this application process since May 2020....at [email protected].  Curious about how rabies plasmids are used in the lab? Check out our “Rabies and...
  32. Cas13d: Small RNA-targeting CRISPR enzymes for transcriptome engineering

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    Blog Post
    ...then easy to package in low-capacity vectors like AAV, a popular vector due to its low immunogenicity. But...EsCas13d. Find the Yan et al. plasmids here Find the Konermann et al. Plasmids here How do Cas13d enzymes...in size and are easy to package in low-capacity vectors! These small, but mighty type VI-D enzymes are ...acceptor and two putative splice enhancers. After AAV-mediated delivery to iPS-derived cortical neurons...S0092-8674(18)30207-1. PubMed PMID: 29551272 Plasmids from this paper are available at Addgene. Yan...S1097-2765(18)30173-4. PubMed PMID: 29551514 Plasmids from this paper are available at Addgene. Learn... Resources on Addgene.org: Find RNA Knockdown Plasmids Check out our CRISPR Guide Read our CRISPR History...
  33. A Primer on Optogenetics: Introduction and Opsin Delivery

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    Blog Post
    ...the promoter in the AAV construct. Stereotaxic surgery  As mentioned above, AAV opsin constructs are... Resources at Addgene Find optogenetics plasmids! Find AAV resources! Find fluorescent protein resources...his optogenetic constructs available through the vector cores of various universities as well as Addgene...transfer agreement, and list of vendors (such as the vector core at the University of North Carolina) that ...is local injection of an adeno-associated viral (AAV) construct using stereotaxic surgery (see videos .... The Deisseroth lab has developed many of these AAV constructs with various promoters and other genetic...However, the length of promoter that can be used in an AAV construct is limited to only a few kb so attaining...
  34. What's New in CRISPR - September 2019

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    Blog Post
    ...CRISPR plasmids available at Addgene. We will still periodically focus on specific CRISPR plasmid tools...with GeneWeld vectors GeneWeld from Jeffrey Essner’s lab uses CRISPR/Cas9 and a donor vector to create knock-ins...that targets the donor vector sequence. Homology arms that flank the donor plasmid cargo are complementary...CRISPR guide Find CRISPR plasmids by function Find recently deposited plasmids ... tools for your research! This time: GeneWeld vectors to create knock-ins CasX Drug inducible CRISPR/...cargo (ex: fluorescent protein gene) on the donor vector. Therefore, targeting requires two sgRNAS: one ... Read the paper in bioRxiv Find the GeneWeld vector kit CasX, a small Cas protein, is active in E....
  35. Hot Biosensors 2022: Year-End Roundup

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    Blog Post
    ...-mRuby3 (AAV1) pGP-AAV-syn-jGCaMP8f-WPRE (AAV Retrograde) pGP-AAV-CAG-FLEX-jGCaMP8m-WPRE (AAV Retrograde...summer or just a bright new plasmid. One area with lots of bright new plasmids is our Fluorescent Biosensors... makes iGECInano suitable for AAV packaging.    Find iGECInano plasmids here!   Matlashov ME, et al. Design...constructs: pAAV-CAG-dLight1.2 (AAV1) pGP-AAV-syn-FLEX-Ace2N-4AA-mNeon-ST A122D WPRE (AAV1) pAAV-hSynapsin1...  Find JEDI-2P plasmids here! Find viral preps here: pAAV-EF1a-DIO-JEDI-2P-WPRE and pAAV-EF1a-DIO-JEDI-...pAAV-CAG-SomaGCaMP6f2 (AAV9) Plus, additional AAV serotypes of the most recent jGCaMP8 calcium sensors: pAAV-hSynapsin1...2022.   Find iGluSnFR3 plasmids here! Find viral prep here: pAAV.hSyn.FLEX.iGluSnFR3.v857.PDGFR.codonopt  ...
  36. Introducing Addgene's New Search - Find Plasmids More Easily For Your Research!

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    Blog Post
    ...300+ plasmids. Under ‘Vector Types’ I selected ‘Lentiviral’ which eliminates most of the plasmids designed... best plasmid for your research can be a daunting challenge. With over 80,000 deposited plasmids from ...through to the plasmid search results: More than 200 different GCaMP containing plasmids are available...search tool lets you access plasmids from journal articles. From paper to plasmid Authors regularly indicate... to include specific plasmid ID numbers. If you know the ID number for a plasmid, your straightforward...page to see the plasmids deposited by our own CSO. But what if you don’t have plasmid ID numbers, or you... Not every plasmid search will start from a publication. You may have an idea for a plasmid that would...
  37. Popular Retroviral Vectors and Their Uses in Scientific Research

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    Blog Post
    ...Transfer Vectors   Expressing your gene of interest pMKO.1 GFP (Plasmid #10676) Retroviral vector for cloning...use the pLKO.1 vector can be found here. Cre-Lox technology Puro.Cre empty vector (Plasmid #17408)   This...building block Entry vectors and 5 lentiviral Destination vectors. These vectors can induce combinatorial...research purposes, retroviral vectors have been developed into ‘split-vector systems’ by separating viral...transgene expression across several plasmids. The most commonly used viral vector systems are made up of separate...separate envelope and packaging plasmids as well as transfer plasmids. This concept ensures safe handling...and expression of these vectors when used in experiments. Retroviral vectors make up a large toolbox ...
  38. AAV Production in HEK293 Cells

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    Protocol
    ...of each plasmid needed to have a 1:1:1 molar ratio with 2 mg total DNA per CS5 Plasmid Plasmid Size (bp... Protocols AAV Production in HEK293T Cells AAV Production in HEK293T...HEK293T Cells You may also like... AAV Viral Service Viral Vector Guides Virus Blog Posts Molecular Biology...conditions must be optimized. Plasmids for transfection: pHelper; pRC (Rep-Cap), plasmid expressing your gene ...molar ratio of each plasmid: 2000 μg / 24,961 bp = 0.08 μg/bp Therefore, for each plasmid we need: Sample ...adeno-associated virus (AAV) in HEK293 cells. Protocols...Introduction This protocol can be used to produce AAV from one Five Chambers Cell-Stack (CS5) (Link opens...
  39. Export Control Regulations Lifted for Plasmids Containing Rabies and VSV-G Genes

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    Blog Post
    ...information on shipping plasmids to your country. Curious about how rabies plasmids are used in the lab? ...! You can also browse tools for AAV tracing, made from rabies plasmids deposited by Ian Wickersham’s lab...If you're an international researcher who uses plasmids containing genes from rabies and vesicular stomatitis...may have noticed it’s been easier to order these plasmids. This is because in 2024 certain export control...controls prescribed by the Australia Group, for these plasmids for the majority of the countries we ship to, ...lasting basis.   Table 1: Popular Rabies and VSV-G Plasmids Name Purpose Depositing Lab pCMV-VSV-G ... particles. Use in conjunction with a packaging vector such as pCMV-dR8.2 dvpr (lentiviral) or pUMVC (...
  40. 22 Hot Plasmid Technologies from 2014

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    Blog Post
    ... the pOSIP (one-step integration plasmid) series of plasmids, vectors that convey both the sequence to... Hot Plasmid list. Other popular plasmids & blog posts @Addgene: The 10 Most Distributed Plasmid Technologies... existing transposon and vector systems and creating an all-synthetic vector that included only the elements... screens. These vectors and sgRNA libraries expand upon the CRISPR family of plasmids by offering a lentivirus-based...inducible inactivation. Find the Robinson plasmids or the Royle plasmids and get to work! Robinson et al... into a destination vector in a predefined order. Finally, the destination vectors are used with Multisite... eight entry vectors can be used for each Multisite Gateway compatible destination vector for a maximum...
  41. Clear and Accessible Writing

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    Blog Post
    ...graduate student using viral vectors for the first time and learning how to purify AAV.  Second, you’ll identify... built on the concept of accessibility: making plasmids more accessible to scientists around the world...sighted readers.    Figure 1: An image from AAV Purification by Iodixanol Gradient Ultracentrifugation...image in Figure 1 appears on our protocol page for AAV Purification by Iodixanol Gradient Ultracentrifugation...the technical details of collecting the purified AAV–that the interfaces between layers are blurred after...are captured at the 40% layer. To collect purified AAV, insert a syringe at the interface of the 40% layer...
  42. Hot Plasmids and Viral Preps - July 2021

    Type
    Blog Post
    ...GCaMP8 AAV preps has expanded. Check out the new selection of ready-to-use AAV9 and AAVrg vectors. New ...subset of the new plasmids and viral preps in the repository through our hot plasmids articles. These articles...recent plasmid deposits and we hope they'll make it easier for you to find and use the plasmids you need... CRISPR plasmids are always being added to the repository. To find all of the CRISPR plasmids available...available in AAV8! Expand your imaging experiments with the Cre-OFF/FLP-ON vector 137128-AAV8: Ef1a-Coff...inducible CRISPR inhibition (CRISPRi). A) Lentiviral vector design. B) Strategy for leak-free transcriptional...EasyTag workflow combines thoughtfully designed plasmid components with Fluorescence Activated Cell Sorting...
  43. Hot Plasmids and Viral Preps - September 2021

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    Blog Post
    ...subset of the new plasmids and viral preps in the repository through our hot plasmids articles. These articles...recent plasmid deposits and we hope they'll make it easier for you to find and use the plasmids you need... CRISPR plasmids are always being added to the repository. To find all of the CRISPR plasmids available...available including: pAAV-hsyn-GRAB_DA2h in AAV9 New GRAB-DA and 5HT sensors New AAV tools to selectively... Xiao Wang Lab has recently deposited a set of plasmids that helps identify base edited cell populations...populations without end-point sequencing assays. These plasmids use “Cas9-mediated adenosine transient reporter... a) Cells are transfected with three different vectors and flow cytometry is used to sort populations ...
  44. FLEx Technology and Optogenetics: Flipping the switch on gene expression with high spatial and temporal resolution

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    ...Learn more about FLEx vectors Download our Plasmids 101 eBook Read our plasmids blog posts Resources ...transgenic DNA exceeding the carrying capacity of AAV vectors." Gene Therapy for Neurological Disorders. Humana...molecular biology reference Find Cre-lox plasmids at Addgene Browse plasmids at Addgene ...as the optogenetic FLEx vectors in combination with transgenic animals or rAAVs expressing Cre under a ...For example, Taylor and colleagues used rAAV FLEx-based vectors to study the neural circuitry behind the...recent paper, de Jong and colleagues used rAAV FLEx-based vectors to answer this question, mapping and characterizing...Wick and Krook-Magnuson, 2018). Optogenetic FLEx vectors contain a strong promoter upstream of an opsin ...
  45. Hot Plasmids - November 2023

    Type
    Blog Post
    ...of the new plasmids, antibodies, and viral preps in the repository through our Hot Plasmids articles. ... ideal for size-limited AAV delivery. PE6c and PE6d are optimized for dual-AAV systems. These variants.... Today, it's time for another edition of Hot Plasmids!  Here's what you'll find in this post:  New...., 2023 under CC-BY 4.0 License. Find PE6 plasmids here!  Doman, J.L., Pandey, S., et al. (2023)....to reprogram delivery vehicles like lentiviral vectors, CreVLPs, and eVLPs for in vivo and in vitro applications...therapies and medical applications.  Find DIRECTED plasmids here! Strebinger, D., et al. (2023). Cell type-specific...pulse-chase experiments, and more. Find LOV-Turbo plasmids here! Next, Qin and Cheah et al. described TransitID...
  46. Adenoviral Delivery of CRISPR/Cas9 Aims to Expand Genome Editing to Primary Cells

    Type
    Blog Post
    ...Cas9. Adenoviral CRISPR vectors (left) or CRISPR vectors and donor DNA vectors (right) are transduced ...need to use a two viral vectors system: one vector for Cas9/sgRNA and one vector for your specific DNA ...gRNA and Cas9 using adenoviral vectors As compared to other viral vectors, AdVs can provide a large transgene...have already a packaging capacity larger than AAV vectors. This capacity is large enough to carry the Cas9...adenoviral vectors Since then, other groups have successfully developed and used AdV vectors to edit genes...Gonçalves and Ventura labs’ plasmids, including protocols, check out the plasmids at Addgene: pAdSh.PGK.Cas9...looking for a broader range of CRISPRs plasmid tools, find more plasmids, CRISPR technology guides, FAQs, and...
  47. 27 Hot Plasmids from 2016

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    Blog Post
    ...includes dSaCas9-VPR in an AAV transfer vector for in-vivo expression and plasmids optimized for dCas9-VPR...Neurosci 2016. PubMed PMID: 26950006 Plasmid ID Plasmid Name Plasmid Type 74309 pcDNA3.0-TRPV4-p2A-ferritin-p2A-mCherry... 74307 pAAV-CMV-DIO-Magneto2.0-sNRPpA AAV 74306 pAAV-CMV-DIO-TRPV4-p2A-ferritin-sNRPpA AAV 74302 ...highlight a subset of the new plasmids in the repository through our hot plasmids articles. These brief articles...features and applications of a partiular plasmid or set of plasmids. We hope that these articles make it ... you to find and use the plasmids you need. You can find all the hot plasmids from 2016 below. With over...over 45,000 plasmids, we can't write posts for every great plasmid that comes into the repository, but...
  48. Evolution of Brainbow: Using Cre-lox for Multicolor Labeling of Neurons

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    Blog Post
    ...Brainbow adeno-associated viral vectors (AAV) available - AAV-EF1a-BbChT and AAV-EF1a-BbTagBY. These constructs...associated with AAV; co-infection with both constructs produces a minimum of 8 colors. The use of AAV provides...research? Check out Brainbow plasmids available from Addgene! Find Brainbow Plasmids @Addgene: Brainbow 1.0...1.0, 1.1, 2.1 plasmids Brainbow 3.0, 3.1, 3.2 plasmids References: Transgenic strategies for combinatorial... of Cre-lox. Check out our previous blog post, Plasmids 101: Cre-lox, if you need a quick primer on how...
  49. Simplify Cloning with in vivo Assembly

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    Blog Post
    ...Subcloning - To move a gene from one vector to another simply amplify the vector and insert with separate primer...possible Some plasmids just won’t amplify! Examples of this are the GC-rich ITRs of AAV genomic DNA encoding...encoding plasmids, or promoters such as the chicken beta-actin promoter of the pHLsec vector. In this ...blog posts on plasmid cloning Resources on Addgene.org Read our protocols for plasmid cloning Find our... from the MRC Laboratory of Molecular Biology. Plasmid cloning is an essential part of any molecular biology... techniques involve the assembly of a circular plasmid in vitro, before transforming it into E. coli for... propagation. However, while not widely known, plasmid assembly can be achieved in vivo using a bacterial...
  50. Plasmids 101: Modular Cloning Applications and Kits

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    Blog Post
    ...kit has a focus on infrastructure with shuttle vectors, several delivery systems which can be engineered...engineered into the TUs, and even viral gene silencing vectors. The Plant Parts III kit has a focus on transformation...between CRISPR components expressed from different plasmid backbones. They noted that backbone differences... as the order, or distance in the placement of plasmid elements can impact expression levels and consequently...system was used to assess how different lentiviral plasmid backbone elements impact viral titer and to compare...compare different Cas enzymes in all-in-one AAV delivery. While Fragmid developers were specifically testing...Fragmid toolkit to facilitate other lentivirus- and AAV-based studies. Unified MoClo Systems While many MoClo...
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