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Showing: 21 - 40 of 52 results
  1. Viral Vectors 101: Pseudotyping

    Type
    Blog Post
    ...Pseudotyping is only done on enveloped viruses such as lentivirus, retrovirus, and rabies virus. How to pseudotype...vector, you use the same protocol for generating lentivirus, but you use a different envelope glycoprotein...Lentiviral production uses three plasmids: (1) The transfer plasmid, (2) the envelope plasmid, and (3) the... lentiviral particles.   Why pseudotype? Lentiviruses and retroviruses typically target immune cells...SARS-CoV-2 spike protein into a lower BSL virus like lentivirus (Crawford et al., 2020). That way, they can study...2020). Because retrovirus is closely related to lentivirus, many retroviral envelope proteins have been ...either virus exhibits alone.  This pseudotyped lentivirus with rabies glycoprotein now serves as a retrograde...
  2. Viral Vectors

    Type
    Collection
    ...engineer various types of viruses. Lentivirus Plasmids | Guide Lentiviruses are versatile tools because of...retroviruses, are the most popular virus for gene transfer in clinical trials. These viruses have a relatively...Target Cell Genome Integration Immune Response Lentivirus Stable RNA <8 Kb 80-130 Dividing/Non-dividing...
  3. Viral Vectors 101: The Retroviral Lifecycle

    Type
    Blog Post
    ... the lentiviruses (like HIV-1) — that have been developed into lentiviral vectors. Lentiviruses are sometimes...most cases, interested in transferring genes to mammalian cells (i.e. transferring DNA), yet retroviruses...generalize the idea of “transduction” to mean any transfer of material from the virus to the host. In fact...pseudotransduction” — to describe the direct protein transfer of RT, which would actually occur in step 2 during...
  4. Viral Vectors 101: Transductions

    Type
    Blog Post
    ...transduction?  Transduction is the process of transferring foreign nucleic acid into a cell by a viral ...perform the transduction with: either retrovirus, lentivirus, adenovirus, or AAV. Then, your desired DNA to... some viruses integrate into the host genome (lentivirus and retrovirus) while others are non-integrating...Addgene.org Generating Stable Cell Lines with Lentivirus Virus Handling and Storage Addgene Viral Services...
  5. Plan Your Experiment

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    Collection
    ...be present in a single lentiviral transfer vector or separate transfer vectors May contain reporter gene...lentiviral particles (for details about lentivirus, see our Lentivirus Guide ) Stable, tunable expression ...transduction CRISPR elements are inserted into an AAV transfer vector and used to generate AAV particles (for...
  6. Lentivirus Production

    Type
    Protocol
    ... Protocols Lentivirus Production Lentivirus Production You may also ...this protocol to generate lentivirus Protocols...Introduction This protocol can be used to produce lentivirus from a lentiviral vector transfected into 293T...lines or transfection reagents. Once produced, lentivirus can be used for a variety of downstream applications...Lentiviral Packaging plasmid(s), Envelope plasmid, and Transfer plasmid encoding your insert of interest Reagent...1.3 pmol Envelope Plasmid ( pMD2.G ) 0.72 pmol Transfer Plasmid* 1.64 pmol OptiPro SFM to total volume...concentrations and ratios should be optimized for each transfer plasmid. Pro-Tip Endotoxins can inhibit transfection...
  7. Viral Vectors 101: Integrase-Deficient Lentiviral Vectors

    Type
    Blog Post
    ...integrase-deficient lentiviruses (IDLVs). As the name suggests, these lentiviruses lack a functioning ... modified them to prevent this integration.  Lentiviruses evolved to integrate Viral genome integration...second-generation system as an example.  The lentiviral transfer plasmid encodes your insert of interest, flanked...involving IDLVs. And remember: You can never trust a lentivirus with secrets... Because they tend to insert themselves...Retroviral Life Cycle Quick Guide to All Things Lentivirus More resources on addgene.org Lentiviral Guide...
  8. "Build Your Plasmid": The Game - Play to Teach

    Type
    Blog Post
    ...Resistance gene and Selection Markers) and one “Transfer Plasmid” game board. Once they agreed on each ...had 35 minutes to develop a strategy and build a transfer plasmid that could be used to genetically manipulate... this way, the students also had to practice transferable skills like team building, collaborative critical...has been developed to teach gamma-retrovirus or lentivirus-based ex-vivo gene therapy’ strategies to undergraduates...
  9. Adenovirus Plasmids

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    Collection
    ...cell types with almost 100% efficiency. Unlike lentiviruses or other retroviruses , adenoviruses do not ...of interest? Search our database for adenoviral transfer plasmids that have inserts. ID Plasmid Type Description...
  10. Your Top Requested Plasmid in 2015!

    Type
    Blog Post
    ... name suggests, lentiCRISPR v2 is a lentiviral transfer vector used to deliver both Cas9 and your gRNA...backbone for their many gRNAs. The high titer lentivirus production afforded by lentiCRISPR v2 is key ...metalloproteinase-9 secretion, and identifying lysine methyltransferase substrates. We’re incredibly happy that lentiCRISPR...
  11. Lab to Office Culture Shock

    Type
    Blog Post
    ...opportunity to discover and evolve your transferable skills. Transferable skills are the non-technical skills...with cloning and lentivirus production, I didn’t really start to recognize my transferable (or “soft”) skills...formulate hypotheses and conduct experiments. You transfer liquids between tubes, look through microscopes...lab to think about these--get started with our Transferable Skills Guide.     Over the last decade, my... blog Visit our careers topic page Read our transferable skills guide Read blog posts about career readiness...
  12. Lentivirus ddPCR Titration

    Type
    Protocol
    ... of Lentivirus Vectors You may also like... Lentivirus Colony Formation Titration Assay Lentivirus Fluorescence... PCR (ddPCR) for lentivirus vector titration. Protocols... Protocols ddPCR Titration of Lentivirus Vectors ddPCR Titration...Assay AAV Titration by qPCR Addgene Viral Service Lentivirus Guide Virus Blog Posts Introduction This protocol...how to use droplet digital PCR (ddPCR) to titer lentivirus vectors. This protocol specifically uses primers...and surfaces with 10% bleach. Safety Warnings Lentivirus is generally considered biosafety level 2+. Please... pipette 10–20 times. Use a new pipette tip to transfer 200 µL of the first dilution into the next dilution...
  13. CRISPR 101: Mammalian Expression Systems and Delivery Methods

    Type
    Blog Post
    ...be present in a single lentiviral transfer vector or separate transfer vectors. May contain reporter gene...4.5kb). CRISPR elements are inserted into an AAV transfer vector and used to generate AAV particles. Transient...Difficulty Very easy Very hard Viral delivery   Lentivirus Retrovirus AAV Cells Dividing or nondividing...
  14. 15 Years of Addgene: The Top 15 Plasmids

    Type
    Blog Post
    ...lentiCRISPR v2 - This 3rd generation lentiviral transfer vector also from the Zhang lab is used to deliver... David Root lab is a 3rd generation lentiviral transfer plasmid for cloning and expressing new shRNA sequences...posts Read our viral vector blog posts Read our lentivirus guide Resources on the Addgene website Browse...
  15. Isolating a Monoclonal Cell Population by Limiting Dilution

    Type
    Protocol
    ... volume of homogenized cell solution is transferred. Transfer cells from the homogenized cell solution...990 µL complete medium. Instead of transferring 0.125 µL, now transfer 100 times that volume, which is 12.5... solution, transfer 12.5 µL of the 1:100 dilution to 10 mL of conditioned medium. Transfer 100 µL of the... pool of stable cells. Transducing cells with lentivirus results in a heterogenous polyclonal population...protocol for generating stable cell lines with lentivirus . Day 0: (optional) Seed cells for the generation...protocol for generating stable cell lines with lentivirus . Pro-Tip Because the polyclonal cell pool is...before counting the cells. When you ultimately transfer approximately 50–100 cells to the conditioned ...
  16. Viral Vectors 101: Producing Your rAAV

    Type
    Blog Post
    ...production process.  Helper-free production Unlike lentivirus, AAV does not possess the ability to replicate...expressing Ad E1A and E1B, can be transfected with your transfer plasmid, carrying your gene of interest, and the...Parts of the AAV Packaging PlasmidParts of the AAV Transfer PlasmidAAV Variables That Matter AAV protocols...
  17. Addgene’s Viral Service - Why Virus? Why Now?

    Type
    Blog Post
    ...scientists and the support of their technology transfer offices, Addgene would not be able to have such...the Addgene Blog Check Out the Top Requested Lentivirus and AAV of 2016 Learn How You Can Use the Viral...
  18. Adeno Associated Virus (AAV) for Cell and Gene Therapy

    Type
    Blog Post
    ...their mutations corrected, and the T-cells were transferred back into the infants. Almost all patients have...technologies have been investigated including lentiviruses, adenovirus, and inorganic delivery tools such...
  19. Plasmids 101: Using Transposons in the Lab

    Type
    Blog Post
    ...rabbits (Sandoval-Villegas et al., 2021).  Gene transfer Transposons are an alternative to viral vector... (~5 kB payload for AAV and ~8 kB payload for lentivirus). Large cargos, such as the ~11 kB cDNA for dystrophin...(mutagenesis screens, transgenic animals, gene transfer). The discovery of RNA guided transposons in bacteria...
Showing: 21 - 40 of 52 results