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  1. Viral Vectors 101: Types of viruses

    Type
    Blog Post
    Published
    June 6, 2023, 1:15 p.m.
    ... 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...
  2. An Introduction to Adenovirus

    Type
    Blog Post
    Published
    Oct. 3, 2023, 1:15 p.m.
    ....73.8.6930-6936.1999. PMID: 10400791. Kafri, T., Morgan, D., Krahl, T., Sarvetnick, N., Sherman, L., & Verma...immune response to Adenovirus (and/or to its partner, AAV) or 2) a sociological effect of the COVID-19 lockdowns... (tens of kilobases; compared to only 4.7 kb for AAV, 9 kb for retroviruses). The tradeoff is that adenoviral...Castro, D., Karr, M., Hawkins, L. K., & Hermiston, T. W. (2003). Multigene expression from a replicating...Huebner, R. J., Gilmore, L. K., Parrott, R. H., & Ward, T. G. (1953). Isolation of a Cytopathogenic Agent from...vectors persist in vivo and maintain activated CD8+ T cells: implications for their use as vaccines. Blood...17510320. Tollefson, A. E., Scaria, A., Hermiston, T. W., Ryerse, J. S., Wold, L. J., & Wold, W. S. (1996...
  3. Adeno-associated Viruses (AAVs) for Genome Editing

    Type
    Blog Post
    Published
    March 27, 2018, 1:32 p.m.
    ...can use AAVs to improve your genome editing experiments (with and without targeted nucleases). AAV genome...biology behind this AAV effect remains unclear, it is likely not a coincidence that the AAV genome is composed...disadvantages to the AAV-based approach that must be considered when deciding whether to use AAV or CRISPR for...of SaCas9 and a gRNA in one AAV and a repair template in second a second AAV to deliver their repair template...across two AAVs, it is possible sequentially repair a target site with the contents of the two AAVs. Using...to use and develop AAVs for your own research and encourage to deposit any new AAV tools you create. ...Resources on the Addgene Blog AAV: A Versatile Tool for Gene Expression in Mammals AAV Titers: Where do they ...
  4. Overcoming the AAV Size Limitation for CRISPR Delivery

    Type
    Blog Post
    Published
    Sept. 16, 2020, 1 p.m.
    ...together (~4.2 kb) into an AAV vector is challenging due to its packaging capacity of AAV (~4.7 kb). While this...co-infection of two AAVs. Cas9 orthologs: shorter, but just as potent and specific? The two AAV strategies described...for in vivo studies. Testing AAV-SaCas9 in vivo To test the efficiency of AAV-SaCas9 in vivo, the Zhang ...not increased compared to a control AAV-GFP. Not only did the AAV-SaCas9-sgRNA constructs mediate genome...proteins with AAV, at just 1,108 and 986 amino acids, respectively, the size of both is within AAV’s packaging...in length, allowing them to be packaged in AAV.   Split AAV approaches  While finding smaller Cas9 orthologs...that the field has overcome with split AAVs. In general split AAVs break a large transgene in two pieces...
  5. Viral Vectors 101: Viruses as Biological Tools

    Type
    Blog Post
    Published
    March 21, 2023, 1:15 p.m.
    ...Adeno-associated viruses (AAVs) are also non-integrating and infect non-dividing cells. AAVs primary advantage...lentivirus, adenovirus, and adeno-associated virus (AAV). While each virus allows you to infect cells and...previously a large barrier for gene therapy. In fact, AAV gene therapies have already been approved in the ...Transient Gene Expression High Immunogenecity AAV Remains Episomal (Little Risk of Mutagenesis)...Listen to Connie Cepko Discuss Gene Therapy with AAV Figure out How to Get the Most from Your Lentiviral...Resources at Addgene! References and Resources 1. Roe T, et al. “Integration of murine leukemia virus DNA ...
  6. Reflections and Looking Ahead

    Type
    Blog Post
    Published
    Feb. 25, 2025, 2:15 p.m.
    ...response to a demand for more AAV viral vector options, we launched AAV Packaged on Request, a service...simplifies your viral vector options. Almost any AAV transfer plasmid in our repository can now be packaged...Meijers, R., Levey, A. I., Saper, C. B., Errington, T. M., Turn, R. E., Bandrowski, A., Trimmer, J. S., ...
  7. Viral Vectors 101: Calcium Sensors

    Type
    Blog Post
    Published
    Aug. 10, 2023, 1 p.m.
    ...Introduction to AAV Find AAV Calcium Biosensor Vectors at Addgene ... tissue-specific targeting. By employing various AAV serotypes, researchers can precisely direct the calcium... ready to go. Pro tip: Vectors with ready-to-use AAV preparations are labeled with the green virus particle...3):1057-65. Resources on Addgene.org Addgene’s AAV Guide Fluorescent Proteins: Biosensors Addgene’... aav...Biophysical journal. 2016 Sep 20;111(6):1119-31. Rose T, Goltstein PM, Portugues R, Griesbeck O. Putting a...
  8. Viral Vectors 101: Viral Applications

    Type
    Blog Post
    Published
    April 13, 2023, 1:15 p.m.
    ...specifically AAV, are also being exploited as delivery mechanisms for gene therapy. The tractability of AAV, low...of virus to choose from (lentivirus, retrovirus, AAV, etc.). When you’ve decided on an application, our...00487-6 Additional Resources on the Addgene Blog AAV: A Versatile Viral tool for Gene Expression in Mammals...Listen to Connie Cepko Discuss Gene Therapy with AAV Adenoviral Delivery of CRISPR/Cas9 Aims to Expand...Addgene! References and Resources References Travieso T., et al. The use of viral vectors in vaccine development...
  9. Hot Plasmids - August 2020

    Type
    Blog Post
    Published
    Aug. 18, 2020, 1:15 p.m.
    ...syn-FLEX-axon-jYCaMP1s. Find these AAVs at Addgene Cre-dependent EYFP AAV in the new serotype PHP.V1 that...pEF1a-DIO-FLPo-WPRE-hGHpA, which is now also available in AAV5 and AAVrg. Find these AAVs at Addgene New controls, biosensor...plasmids at Addgene! CRISPR RNP electroporation and AAV donor infection (CRISPR-READI) enables genome engineering...transduction of vesicular brain cells. Find this AAV at Addgene New serotypes for the Cre-dependent ...biosensor, chemogenetic and optogenetic AAV for expression in forebrain GABA-ergic interneurons. These include...hDlx-GiDREADD-dTomato and mDlx-ChR2-mCherry. Find these AAVs at Addgene ...authors created the pMAK backbone by modifying pMAL-T-Avi-His/BirA, a vector commonly used for in vivo biotinylation...
  10. Viral Vectors 101: Transductions

    Type
    Blog Post
    Published
    April 30, 2024, 1:15 p.m.
    ...non-integrating (adenovirus and AAV) but can still express episomally long-term (AAV). If you perform a lipid-based...with: either retrovirus, lentivirus, adenovirus, or AAV. Then, your desired DNA to be integrated can be cloned...The triple T’s of biology are transformations, transfections, and transductions! In this blog we will...
  11. The PAM Requirement and Expanding CRISPR Beyond SpCas9

    Type
    Blog Post
    Published
    Aug. 20, 2020, 2:30 p.m.
    ... it can be packaged into adeno-associated virus (AAV).  At 984 amino acids in length, Cas9 from Campylobacter... smaller than SaCas9 and is also compatible with AAV delivery. NmCas9, another small ortholog, displays... Read more about Cpf1 Read more about SaCas9 and AAV Check out our CRISPR Featured Topic Page Resources...Edraki A, Mir A, Ibraheim R, Gupta A, Sasaki KE, Wu T, Donohoue PD, Settle AH, Lied AM, McGovern K, Fuller...plasmids from this publication at Addgene. Kim E, Koo T, Park SW, Kim D, Kim K, Cho H-Y, Song DW, Lee KJ, ...
  12. Hot Plasmids and Viral Preps - January 2021

    Type
    Blog Post
    Published
    Jan. 5, 2021, 2:15 p.m.
    ... AAV8, as well as AAV5 and AAVrg. Find the Cre-expressing viral preps here AAV-CAG-dLight1.3b from ...in serotype AAV5! Get dLight1.3b here Looking for a knock-out in your experiments? AAV-flex-taCasp3...available as a ready to use viral prep in serotype AAV5. Find AAV-flex-taCasp3-TEVp here The red-shifted channelrhodopsin...SaCas9 ABE variants. It's also one of the smallest AAV-deliverable ABE.  Find the plasmid here Jesse Zalatan...the Deisseroth viral preps here Coming soon! New AAV serotypes from the Sanford Boye lab with enhanced...Casɸ-2 the PAM sequence is 5’-TBN-3’ (where B is G, T, or C). The authors demonstrate that CRISPR-Casɸ is...include AAV1, and AAV9. Find viral preps here pAAV-hSyn-Cre-P2A-dTomato is now available in AAV1 and AAV8...
  13. IBEX Knowledge-Base: A Data Resource for Multiplex Tissue Imaging

    Type
    Blog Post
    Published
    June 8, 2023, 1:15 p.m.
    ...Immunofluorescence Negative Can Be Positive: Open AAV Data with Addgene Antibodies 101: Choosing the Right...C. J., Yaniv, Z., Yao, L., Marr, J., Beuschel, R. T., Ichise, H., Gola, A., Kabat, J., Lowekamp, B., Speranza...N., Shih, R., Yao, L., Yaniv, Z. R., Beuschel, R. T., Kabat, J., Croteau, J., Davis, J., Hernandez, J....
  14. Antibodies 101: Single Chain Fragment Variables (scFvs)

    Type
    Blog Post
    Published
    June 3, 2021, 1:15 p.m.
    ...Bispecific T-cell engagers (BiTE®s), bind CD3 on T cells and a tumor-specific antigen, it brings T cells to...chimera of scFvs and T cell receptors and are expressed on T cells to make CAR T cells. The extracellular... allows for their delivery by viral vectors like AAV, which could be useful for delivering scFvs that ...recognizes an antigen of interest while the intracellular T cell receptor portion of the CAR facilitates signal...transduction and release of cytotoxic granules from the T cell. When a CAR has an scFv that binds cancer-related...binding of the scFv part of the receptor can activate T cells to kill cancer cells. scFv’s small size also...Hardman K, Jacobson J, Johnson S, Kaufman B, Lee S, Lee T, Pope S, Riordan G, Whitlow M (1988) Single-chain ...
  15. 15 Hot Plasmids from 2017

    Type
    Blog Post
    Published
    Jan. 9, 2018, 3:02 p.m.
    ... of the toolkit in action, see Cermak T, et al. 2017. Cermak T, et al. Plant Cell. 2017. PubMed PMID:...interneurons, Gordon Fishell’s lab has developed a new AAV approach using regulatory elements that restrict ...to this cell type. To this end, they constructed AAV plasmids bearing one of the distal-less homeobox ...these tools in virtually any vertebrate. This novel AAV approach allows you to target and functionally manipulate...tool for the research community. You can find the AAV vectors for infecting GABA-ergic interneurons here...27798629 Listen to Our Podcast Segment on This New AAV Tool    mCyRFP1: Novel fluorescent protein that...extra-chromosomal telomeric DNA), which accumulates when T-loops (secondary telomeric structures) are deleted...
  16. Hot Plasmids - November 2023

    Type
    Blog Post
    Published
    Nov. 14, 2023, 3:35 a.m.
    ... ideal for size-limited AAV delivery. PE6c and PE6d are optimized for dual-AAV systems. These variants...gag, to specific cell types. It can also make CAR-T cell therapy more accessible by simplifying the production...process and could even enable the creation of CAR-T cells directly within the body. Overall, DIRECTED ...
  17. What the HEK?

    Type
    Blog Post
    Published
    April 18, 2023, 1:15 p.m.
    ...Troubleshooting Additional resources on Addgene.org AAV Production in HEK-293T Cells  ... the most commonly used line expresses SV40 large T antigen and is thus dubbed HEK-293T. Given that the...viral production because they express the SV40 large T-antigen. This allows them to replicate viral plasmids...
  18. Hot Plasmids: Summer 2024

    Type
    Blog Post
    Published
    Aug. 27, 2024, 1:15 p.m.
    ...proteins than SpyCas9, allowing them to be packaged in AAV vectors, potentially with multiplexed targets. ...from Neumann et al. 2024. The team showed that AAV-delivered CHARM could silence the expression of prion... (2024). Brainwide silencing of prion protein by AAV-mediated delivery of an engineered compact epigenetic...Anzalone, A. V., Gao, X. D., Podracky, C. J., Nelson, A. T., Koblan, L. W., Raguram, A., Levy, J. M., Mercer,... CHARM plasmids here!   Neumann, E. N., Bertozzi, T. M., Wu, E., Serack, F., Harvey, J. W., Brauer, P....
  19. Multifunctional Neural Fibers: Modulation from Gut to Brain

    Type
    Blog Post
    Published
    Aug. 31, 2023, 1 p.m.
    ... A., Rupprecht, L. E., Orguc, S., Khudiyev, T., Tanaka, T., Sands, J., Zhu, W., Tabet, A., Manthey, M.... of a live animal. They started by delivering an AAV construct expressing channelrhodopsin 2 (ChR2), a...
  20. Hot Plasmids: Winter 2025

    Type
    Blog Post
    Published
    March 11, 2025, 1:15 p.m.
    ...editing plasmids here! Vu, T. V., Nguyen, N. T., Kim, J., Song, Y. J., Nguyen, T. H., & Kim, J.-Y. (2024)...Lee et al., 2024. The authors have deposited AAV plasmids for Cre-dependent and -independent versions...for the first time (Figure 3). The team also used AAV9 to deliver ASAP5 to the cortex and imaged voltage...
Showing: 21 - 40 of 63 results