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We narrowed to 273 results for: aav

Showing: 31 - 60 of 273 results

  1. Viral Vectors 101: Systemic Capsids

    Type
    Blog Post
    ...    Figure 1: AAV toolkit for targeted gene delivery to the brain. The AAV (a) capsid, (b) cargo...precious cargo space in AAV vectors. Dual expression systems, which use two or more AAVs to transduce the same... et al, 2019 AAV-PHP.B2 CNS Mice Yes (LY6A) Deverman et al., 2016 AAV-PHP.B3 CNS Mice...2022 AAV-PHP.eC CNS: neurons and astrocytes Mice No (LY6C1) Shay et al., 2023 AAV-PHP.V1...al., 2020 AAV-PHP.N CNS: neurons Mice Yes (LY6A) Kumar et al., 2020 AAV-PHP.B4 CNS ...2023 AAV-F CNS: neurons and astrocytes Mice No (LY6C1)   Hanlon et al., 2019 AAV-BI-28 ...from other labs. AAVs not otherwise attributed were deposited by the Gradinaru lab.  AAV-PHP.B was the first...

  2. Four Ways to Package Transgenes That Exceed the Size Limit of Adeno-associated Virus

    Type
    Blog Post
    ...time AAV user Learn about how AAV is used in retinal gene therapy Learn about the parts of an AAV transfer... of ~9 kb into AAV. They found that in defiance of the packaging limit dogma, this AAV successfully mediated...size of the AAV donor template for CRISPR-mediated homology directed repairs (HDR). Split AAV vector approaches...independently packaged into an AAV. When a cell is co-infected with both part A and part B AAVs, the fragments reassemble...Addgene.org: Check out the Addgene AAV guide Find ready-to-use AAV preps from Addgene's viral service ...Adeno-associated virus (AAV) has many features which make it a great viral vector, but its packaging ...how do you fit a big gene into a tiny vector like AAV? By breaking the transgene into smaller pieces. Reassembly...

  3. AAVs in Retinal Gene Therapy

    Type
    Blog Post
    ...Adeno-Associated Virus (AAV) for cell and gene therapy AAVs for genome editing AAV: A versatile tool for...pigmented epithelium (RPE). AAVs, on the other hand, have broad tropism in the eye. AAV-2, the first identified...occurring and engineered AAV serotypes that further expands the range of AAV properties is available. ...mammals Resources at Addgene.org Find AAV plasmids Find ready-to-use AAV viral preps Browse all viral vectors...into the field of gene therapy, more specifically AAV-based retinal gene therapy. The year was 2001 and...technician in a lab using adeno-associated viral vectors (AAVs) to treat an inherited retinal degenerative disease...and cell) therapies. One may wonder why the first AAV-based gene therapy treatment for a genetic disease...

  4. Viral Vectors 101: AAV Serotypes and Tissue Tropism

    Type
    Blog Post
    ...Addgene.org AAV Guide AAV Data Hub AAV Packaged On Request Browse all in-stock AAV preps Browse all AAV plasmids... Figure 1: Diagram of AAV components. Created with BioRender.com. AAV vectors have both distinctive... your choice of AAV vector for your experimental system. Table 2: Availability of AAV serotypes at Addgene...Viral Vectors 101: An Introduction to AAV Viral Vectors 101: AAV Variables that Matter Viral Vectors 101...Table 3: AAV tissue tropism. To target... Try using... CNS AAV1, AAV2, AAV2-retro (AAVrg), AAV5, AAV8...Virus (AAV) Serotype 9 Provides Global Cardiac Gene Transfer Superior to AAV1, AAV6, AAV7, and AAV8 in the...receptor Coreceptor AAV1 α2,3-/α2,6 N-linked sialic acids1 AAV receptor (AAVR)2   AAV2 Heparan sulfate...

  5. New and Upcoming Viral Vectors - Spring 2019

    Type
    Blog Post
    ...Our new AAVs include: pGP-AAV-syn-FLEX-jGCaMP7b-WPRE pAAV.hSyn-FLEX.iGABASnFR pAAV.hSyn-FLEX.iGABASnFR.... of jGCaMP7 in AAV1 at Addgene! See all calcium sensor AAV at Addgene. GABA sensor AAV GABA is the primary...are some of the AAV we have released so far in 2019. You can also browse our entire AAV inventory! Our ...Plasmid Serotype Name 50363  AAV5  AAV phSyn1(S)-DreO-bGHpA 121675  AAV9  pAAV-EF1a-fDIO-Cre (FLP-dependent...Plasmid Serotype Name 104496  AAV1  GP-AAV-CAG-FLEX-jGCaMP7f-WPRE AAV1 with a CAG promoter exhibits high...iGABASnFR and its F102G variant in AAV1 at Addgene! Archon1, a voltage sensor AAV Historically, electrical activity...114472  AAV5, AAV8  pAAV-hSyn-mCherry 50459  AAVrg  pAAV-hSyn-DIO-mCherry 59462  AAV2  pAAV-CAG-tdTomato...

  6. Synthetic promoter AAVs for cell-type specific expression in retinal cells

    Type
    Blog Post
    ...Performance of synthetic promoter AAVs in mice All of these synthetic promoter AAVs were first injected into the...  Applications for synthetic promoter AAVs Besides restricting AAV transgene expression to particular cell... A toolkit of synthetic AAV promoters The Roska lab’s synthetic promoter AAVs allows for targeted gene...about using AAV for retinal gene therapy Find more about precise neuronal targeting using AAV technologies...posts Resources at Addgene.org Find AAV plasmids Find ready-to-use AAV viral preps Browse all viral vectors...Adeno-associated virus (AAV) is a popular tool for gene delivery, but it has a drawback: how do you ensure...basic research. To improve cell-type specificity of AAV, work has focused on modifying the outside protein...

  7. AAV Vector Quality Control: Going the Extra Mile with NGS

    Type
    Blog Post
    ... How did AAV-68544 become contaminated? Well, we purposely mixed another AAV vector with AAV-68544 to ...identified, and we will discard any AAV prep we suspect is contaminated. For AAV-68544, the best match for the...). When we blindly analyzed AAV-68544, we were easily able to identify AAV-44632, the contaminant we mixed...because of poor reagent quality. To make sure our AAV vectors are of the highest quality, we undertake ...research. To make sure that adeno-associated viral (AAV) vectors available at Addgene are suitable for in...perform all the standard quality control assays for AAVs. These steps include measuring viral titer and assessing...Why should you care about viral quality control? AAV vectors are produced by scientists - not robots. ...

  8. Viral Vectors 101: The AAV Retrograde Serotype

    Type
    Blog Post
    ...expression.     AAV retrograde Unlike traditional dye-based neuronal tracing reagents, AAV particles require....)  In this post we’ll describe the AAV retrograde serotype (AAVrg) and how it enables scientists to access...look how cool the brain is!" Using retrograde AAV AAVrg can be used to deliver a wide array of genetic...inhibited) by any genetic tool delivered by the AAV.   AAVrg requires high titers for efficient retrograde... can find in AAV Data Hub!) The cortical pathways to the IC were well transduced by AAVrg while other ...difficult. The in vivo workhorse adeno associated virus (AAV) shows relatively low retrograde transport efficiency...University of California, Berkeley engineered an AAV variant that efficiently infects neurons, directs...

  9. Newly Updated AAV Data Hub!

    Type
    Blog Post
    ...and re-launched Addgene AAV Data Hub, the place for scientists to share their AAV validation data. The Data...scientists, learn more about the AAV Data Hub, and hear the incredible AAV talks given by Connie Cepko and... of community submissions for Addgene and CLOVER AAV experiments - and we've updated our submission process...Using the Data Hub If you're trying to decide which AAV is right for your experiment, searching the Data ...can even see dendritic spines!  Curious? Watch our AAV Data Hub Challenge recording to see two reports presented...Hub If you've ever validated an Addgene or CLOVER AAV, you can (and dare we say, should!) submit your data...meet FAIR data-sharing guidelines. But what if my AAVs didn't work?  We love negative data, and in fact...

  10. Beyond the Blood Brain Barrier: PHP.B Enters the Central Nervous System Via the LY6A Receptor

    Type
    Blog Post
    ...nervous system (PNS) targeting AAV  Get 1st time AAV user tips from an AAV rookie  Learn about some considerations...Search for AAV vectors to use with your research. Visit Our AAV Guide Page for info on AAV components,...transfer to the rat CNS: AAV PHP. EB vector dose–response and comparison to AAV PHP. B." Gene therapy 25.5...considerations when using AAVs Learn more about using AAV as a tool for gene expression in mammals. Resources...components, common uses of AAV, and much more! Find ready-to-use AAV from Addgene or check out protocols for packaging... its parental AAV9 relied on for transducing cells: galactose and the AAV receptor (AAVR). Cell lines ...such as adeno-associated virus (AAV), from reaching their targets. The AAV9 serotype can breach the BBB ...

  11. Using AAV for Neuronal Tracing

    Type
    Blog Post
    ...considerations when using AAVs Resources on Addgene.org Find ready-to-use AAV Preps Find AAV plasmids Browse ... a new AAV variant, rAAV2-retro, that migrates retrogradely at higher rates than any other AAV serotype...plasmids at Addgene). AAV vectors: A platform for delivering neuronal tracers AAV vectors have been widely...into neuronal cells. The AAV genome is a single-stranded DNA molecule and AAV vectors are replication ...proteins. For a brief overview see Addgene’s AAV guide. AAV particles are relatively small (20 nm) in size... CNS AAV1, AAV2, AAV4, AAV5, AAV8, AAV9 Heart AAV1, AAV8, AAV9 Liver AAV7, AAV8, AAV9 Lung AAV4... step in the viral life cycle. Using AAV for neuronal tracing AAV vectors are the first choice of many...

  12. AAV Packaged on Request is Here!

    Type
    Blog Post
    ...used viral vectors. That’s where AAV Packaged on Request comes in.  AAV Packaged on Request With Packaged...: The AAV Packaged on Request banner.   We currently offer serotypes AAV1, AAV2, AVV5, AAV8, or AAV...AAV Packaged on Request, an expansion of our viral vectors service, has officially launched! As of today...today, you can request any of over 3,000 eligible AAV cargo plasmids in the Addgene repository to be packaged...been following along, you may want to go to our new AAV Packaged on Request webpage to get started with your... go from selection to viral vector. To start the AAV packaged on request process, simply navigate to your...production and quality control.  Our packaged on request AAV service uses the same trusted production and quality...

  13. AAV Production in HEK293 Cells

    Type
    Protocol
    ... Protocols AAV Production in HEK293T Cells AAV Production in HEK293T...adeno-associated virus (AAV) in HEK293 cells. Protocols...HEK293T Cells You may also like... AAV Viral Service Viral Vector Guides Virus Blog Posts Molecular Biology...Introduction This protocol can be used to produce AAV from one Five Chambers Cell-Stack (CS5) (Link opens... Vortex Reagents Adherent HEK293T cells (ideally AAV-293T clones) Pro-Tip While adherent, these cells ...not use filters made of materials other than PES. AAV particles stick to many other surfaces, but do not...health of the HEK293T cells is critical for optimal AAV yield. Do not overgrow your cells. Pass the cells...

  14. Viral Vectors 101: Inverted Terminal Repeats

    Type
    Blog Post
    ...are the elements that make an AAV plasmid an AAV plasmid.  Within the AAV genome, ITRs serve as the origin...capacities. AAV vectors containing the AAV2 ITRs can be cross-packaged with capsids from multiple AAV serotypes...ITRs are retained with the gene in a recombinant AAV (rAAV) vector (Figure 1). Everything else outside the...ITRs are one of the most important elements of AAV and rAAV vectors, modifications can affect gene transfer...Adeno-associated viruses (AAV) are an important biological tool that allow scientists to express a gene...gene of interest in a cell or animal model. AAV plasmids contain several important elements, but among...ITRs gets left behind.    Figure 1: Recombinant AAV vector with ITRs that flank the gene cassette, which...

  15. Viral Vectors 101: Viral Vector Elements

    Type
    Blog Post
    ...release from late endosomes when AAV is trafficked. Rep and cap mediate AAV pseudotyping which allows for...for altered tropism of AAV to target different tissue or cell types. AAV also requires some back up from...vector components of AAV Adenovirus Adenoviruses have quite a bit in common with AAV, just like lenti ...there are many shared components across viruses (AAV, lentivirus, etc.) and their functions are more intuitive...lentivirus, adenovirus, and adeno-associated virus (AAV). The components of these vectors are also split ...components of retrovirus  Adeno-associated virus AAV’s elements are quite different from gamma-retrovirus...cell and deposit viral cargo. Gene expression While AAV often does not integrate into the host genome (more...

  16. Viral Vectors 101: Types of viruses

    Type
    Blog Post
    ... Adeno-associated virus (AAV) is a small, single-stranded DNA parvovirus. AAV can infect humans and some... generally not as long lasting as AAV (up to several weeks vs. AAV’s several years). But these viruses...Adeno-associated Virus (AAV) Guide Addgene’s viral plasmids and resources Addgene’s viral services: AAV Resources...currently known to cause any diseases. Recombinant AAV largely does not integrate, and the addition of a...replicate and divide along with the endogenous DNA. AAV also has low immunogenicity, meaning it does not ...conducive to targeting all cell types. Altogether, AAV has many excellent features for human gene therapy...and is currently being used in clinical settings. AAV is also a cool tool in the laboratory! It is ideal...

  17. Viral Vectors 101: AAV Variables That Matter

    Type
    Blog Post
    ...multiple AAV variables.    Serotypes Serotype refers to the different protein compositions of AAV capsids...when designing and testing your AAV.  Figure 2: Comparison of AAV serotypes 1, 2, 5, 6, 8, and 9...Alternate Route for Adeno-associated Virus (AAV) Entry Independent of AAV Receptor. Journal of Virology, 92(7)...Viral Vectors 101: An Introduction to AAV Viral Vectors 101: The AAV Retrograde Serotype Viral Vectors 101...Using AAV vectors in complex biological systems can be tricky at best, and downright infuriating at worst... in and start injecting your virus, a successful AAV experiment starts with validation and optimization...usually faster and easier to do the validation first.  AAV-mediated gene expression can differ extensively depending...

  18. Video Library

    Type
    Protocol
    ...in the lab Over-Agar Antibiotic Plating Protocol AAV Purification Purify adeno-associated virus from a... a preparation produced in mammalian cells AAV Purification by Iodixanol Gradient Ultracentrifugation ...workspace, and maintaining sterility while working. AAV Titration by qPCR Use qPCR to measure the physical...titer of your adeno-associated virus preparation. AAV Titration by qPCR Using SYBR Green Technology Protocol...

  19. Viral Production at Addgene

    Type
    Blog Post
    ... and quality control are described below. AAV Production AAV distributed by Addgene has been produced ...purity of the AAV preparation. Figure 1: Silver staining of purified and non-purified AAV subjected...arrowhead). Scale bar = 100 nm.   AAV resources Browse AAV preps available from Addgene. After receiving...Addgene blog Find and share AAV Data with Addgene's Data Hub Digital Droplet for AAV Quantification Viral Vectors...Figure 2: AAV Pro cells were transduced with either pAAV-Ef1a-mCherry-IRES-Cre (55634-AAVrg) alone at ...84445-AAVrg).   Electron Microscopy The ratio of empty to full (i.e., genome-containing) AAV particles..., we’ll walk you through how we produce both our AAV preps and our lentiviral preps.   Viruses are generated...

  20. A Practical Guide to Optimizing AAV DIO and FLEx Vector Expression

    Type
    Blog Post
    ...Alternate Route for Adeno-associated Virus (AAV) Entry Independent of AAV Receptor. J Virol 92. https://doi.org...Considerations When Using AAVs Three Key Considerations For Precise Neuronal Targeting Using AAV Technologies Resources... on Addgene.org Find ready to use AAV vectors at Addgene. Find AAV plasmids to use in your experiments...of viruses used (100798-AAV, lot #v15287, titer 1.7x10e13 GC/mL and 100799-AAV1, lot # v14715, titer 2.4x10e13...their cells of interest and recombinase-dependent AAV vectors for selective transgene expression. While... or spurious expression of recombinase-dependent AAV vectors. In this article, we will discuss some of...Fischer, KB. 2019). This means that all DIO/FLEx AAV vectors will have some level of recombination that...

  21. Using Addgene's New Viral Service for Your Research

    Type
    Blog Post
    ...operator. AAV AAVs are the workhorses of both chemo- and optogenetics. We’re therefore beginning our AAV viral...currently available) and adeno associated virus (AAV, primarily chemogenetics tools for now but with optogenetic...researcher Connie Cepko has been helping us with AAV testing and recently had this to say about the service...preparations to the scientific community. Addgene's AAV preparations have worked well in my lab, including...ll provide a brief rundown of what lentiviral and AAV preps are available below, but you can always head... will be available soon. We’re also distributing AAV preps with particular serotypes that can be used ...You can use these as controls to determine if your AAVs are getting to the right cells using your particular...

  22. Addgene Protocols Go Viral: AAV Purification and Titration

    Type
    Blog Post
    ...YouTube 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...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 “...your qPCR to determine the genome copies in a given AAV preparation. For detailed instructions and calculations...stock used to generate a standard curve, visit the AAV Titration by qPCR written protocol page. Getting...

  23. New and Upcoming Viral Vectors - May 2020

    Type
    Blog Post
    ...also offered as AAV1 (along with AAV PHP.eB, AAV Retrograde, AAV2, AAV5, AAV8, and AAV9). Once activated... the Dolcetto lentiviral prep here Control AAV Control AAV allow researchers to not only interpret their...offer control AAV in smaller aliquots of 20ul for serotype testing to help you pick the best AAV for your ...Testing AAV inventory for the entire collection! Plasmid Serotype Name Depositor 27056 AAVrg pAAV-Ef1a-DIO...ready-to-use viral vectors. Here are some of the AAV and lentiviral preps we have released in the last...confirm expression in target cells. While the various AAV serotypes can be used to achieve different patterns...specific manipulation of neurons. We have expanded our AAV collection to include two new ChR2 constructs that...

  24. Viral Vectors 101: Producing Your rAAV

    Type
    Blog Post
    ...Parts of the AAV Packaging PlasmidParts of the AAV Transfer PlasmidAAV Variables That Matter AAV protocols...Overview of key steps of AAV production, iodixanol gradient purification, and AAV titration by qPCR.   Pro... addgene.org  AAV Titration by qPCR Using SYBR Green TechnologyAAV Titration by ddPCRAAV Purification ...Addgene AAV Production protocol. Titering Once you’ve produced, harvested, and purified your rAAV, you’ll...transducible units in the virus preparation.  rAAVs  Now your AAV virions are ready to store or use. They are...process.  Helper-free production Unlike lentivirus, AAV does not possess the ability to replicate itself ... applications, you can consider using unpurified AAV from the supernatant (Goodwin et al., 2020) or crude...

  25. Twenty Years of Sharing: Addgene's Viral Vector Service

    Type
    Blog Post
    ...adeno-associated viruses (AAVs), will know just how tricky these tools can be to use. AAVs, which can target ... Cumulative AAV preps available in the Addgene repository each year from 2016–2023. B) AAV preps distributed...: A) Cumulative AAV preps available at Addgene from 2016–2023 by type of tool. B) AAV preps distributed...before selecting an AAV can help a researcher make a more informed choice on which AAV to request and/or...feedback on AAVs at Addgene? Suggest a viral vector for our service; leave a comment; or take our AAV survey...the retrograde AAVrg and the systemic capsid PHP.eB.   Figure 4: A) Cumulative AAV preps for the...from the lengthy process of validating and using an AAV in a specific experimental setup. Teams across Addgene...

  26. Production of Virus in Insect Versus Mammalian Cells

    Type
    Blog Post
    ...production. AAV and lentiviruses can be produced in insect cells, but they require cloning specific AAV or lentiviral...cells Insect cells Viruses AAV and lentivirus Baculovirus; can produce AAV and lentivirus if needed ...Ultracentrifugation (AAV); centrifugation (lenti) Centrifugation Titration time ~1 day (AAV); ~1 week (lenti...Addgene blog Viral Vectors 101: Producing Your rAAV AAV Titers: Where Do They Come From and What Do They... and widely available. The viruses Lentiviruses, AAV, and adenoviruses can all be produced in mammalian... it is much more common to make lentiviruses and AAV in-house. High-titer adenoviruses are difficult and...production labs or companies. Production of both AAV and lentivirus requires three plasmids — a transfer...

  27. Droplet Digital PCR for AAV Quantitation

    Type
    Blog Post
    ...powerful tool for quantifying AAV for some time now. When titrating AAV by qPCR, viral DNA is amplified...Since Addgene began producing AAV vector preparations, we have used quantitative PCR to evaluate the ... 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...reference, meaning saving on reagents (and time)! AAV titering using droplet digital PCR Droplet digital... for your PCR experiment. The process to titrate AAV by ddPCR begins with diluting the virus. It is important...

  28. Protocols for Molecular Biology, Plasmid Cloning, and Viral Preps

    Type
    Protocol
    ...cell lines from a polyclonal pool of stable cells AAV Production in HEK293 Cells Produce adeno-associated...deliver your gene of to the target of your choice AAV Purification by Iodixanol Gradient Ultracentrifugation...preparation produced in mammalian cells Watch the Video! AAV Titration by qPCR Using SYBR Green Technology Use...adeno-associated virus preparation Watch the Video! AAV Titration by ddPCR Use ddPCR to measure the physical...

  29. Addgene’s First AAV Data Hub Challenge

    Type
    Blog Post
    ...Addgene’s first AAV Data Hub Challenge, now taking place Dec. 6, 2022! Share your AAV data, connect with...with other researchers working with AAV, support open science, and maybe even win a $500 travel prize ...can submit data from their CLOVER lab or Addgene AAV experiments to the Data Hub. Submit your data by ... competition, where you can get all your burning AAV questions answered.  Interested? You can learn more...

  30. Why Add Sucrose? Improved Yields for Adeno-associated Virus Preparation

    Type
    Blog Post
    ...improve their AAV yields. Given the wide range of downstream applications scientists rely on our AAV preparations...membrane When packaging adeno-associated viral vectors (AAV) not all serotypes are equal; while some serotypes...To our knowledge the effect of hyperosmolarity on AAV production yields had yet to be examined. Increased...sorbitol. As sorbitol is already a common excipient in AAV formulation buffers, this sugar may be a more attractive...fluorescent dye and transduction of GFP-expressing AAV particles we did not observe any difference between...alike as an easy and inexpensive method to improve AAV yields. Although we only investigated 3 serotypes... approach will be beneficial for a host of other AAV serotypes; it will be exciting to test this approach...
Showing: 31 - 60 of 273 results