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We narrowed to 43 results for: lentiviral infection

Showing: 21 - 40 of 43 results
  1. Targeting HIV-1 with CRISPR: Shock and Kill or Cut it Out?

    Type
    Blog Post
    Published
    May 10, 2016, 2:30 p.m.
    ...increased risk of infection, including both common infections and opportunistic infections not usually seen...destroy infected cells, the other using wild-type Cas9 to remove the HIV-1 genome from infected cells. ...individuals, expanded, and infected with HIV-1. For two HIV-1 strains, Cas9/gRNA lentiviral expression significantly...latent HIV-1 infection, which would make it easier for an “escape” virus to propagate and infect adjacent ...combat other viral infections, notably a mouse model of Hepatitis B, a disease that infects over 250 million...Over 25 million people worldwide are currently infected with the lentivirus HIV-1. Today, HIV-1 can be...completely disappear; it just hides in latently infected cells. To truly cure HIV-1, researchers need to...
  2. Multiplex Genome Editing with CRISPR-Cpf1

    Type
    Blog Post
    Published
    May 9, 2017, 2:12 p.m.
    ...Sakuma et al   Multiplexed Lentiviral Expression Cassettes lentiviral transduction One vector expresses... multiple expression platforms: transfection, lentiviral transduction, and AAV transduction.  In most ...when expressing the Cpf1 multiplex system from a lentiviral vector.  Lentiviruses carry a (+) strand RNA ...Cpf1. This means Cpf1 can bind and cleave the lentiviral RNA, preventing packaging of the virus.  Reversing...and in vivo. For these experiments, cells were infected with a 1:1 ratio of two AAVs,  one expressing ...a crRNA array plus a GFP tag. Four weeks post-infection, there was strong expression of Cpf1 and GFP in...
  3. The AAVantages of AAV in CRISPR Screens

    Type
    Blog Post
    Published
    Feb. 4, 2025, 2:15 p.m.
    ... screens rely on lentiviral systems, a fact supported by the wide array of lentiviral-based CRISPR libraries...large packaging capacity and stable expression of lentiviral vectors make them an attractive option. However...into mice. For in vivo screens, mice are directly infected with the CRISPR library. In vivo screens can become...Lentivirus has limited packaging options, with most lentiviral vectors being packaged using VSV-G. In contrast...serotype has its own tropism, or a preference to infect specific cell or tissue types. Using serotypes ...example, AAV8 for kidney cells — can help improve infection rates in your experiment. Figure 2: Visual...
  4. 15 Years of Addgene: The Top 15 Plasmids

    Type
    Blog Post
    Published
    Jan. 8, 2019, 1:54 p.m.
    ... cells a virus can infect. The VSV-G envelope protein enables this virus to infect many different cell...the last 15 years - the majority of these being lentiviral or CRISPR tools. How many times have these plasmids...Addgene psPAX2  - psPAX2 is a 2nd generation lentiviral packaging plasmid from the Didier Trono lab that...genes. It can be used with 2nd or 3rd generation lentiviral vectors and an envelope expressing plasmid, such...PX458). lentiCRISPR v2 - This 3rd generation lentiviral transfer vector also from the Zhang lab is used...and contains an envelope protein for producing lentiviral and MuLV retroviral particles. It can be used...with packaging plasmids such as pCMV-dR8.2 dvpr (lentiviral) or pUMVC (MuLV retroviral). Fun fact: published...
  5. Viral Vectors 101: Types of viruses

    Type
    Blog Post
    Published
    June 6, 2023, 1:15 p.m.
    ...transduce (infect) a wide range of cell types with a high efficiency. However, gamma-retrovirus infection is ...maximum titer, a plus for production and infection. This virus can infect dividing and non-dividing cells and...complementary DNA copies of their genome upon infecting a host cell. This viral DNA (also called proviral...to dividing cells only, so is not suitable for infection of quiescent cells or infrequently cycling cells...most well-studied lentivirus is HIV, which many lentiviral tools have been derived from. Lentiviruses have...coming in around 9 kb. Unlike gamma, lentivirus can infect both dividing and non-dividing cells. Lenti particles... small, single-stranded DNA parvovirus. AAV can infect humans and some other mammals but is not currently...
  6. Minigenomes - a Safe Way to Study Dangerous Viruses Like the Ebola Virus

    Type
    Blog Post
    Published
    March 17, 2016, 2:30 p.m.
    ...incapable of producing infectious virus (similar to lentiviral vectors) because they do not encode all of the... its own RNA-dependent RNA polymerase into the infected cells. The EBOV polymerase replicates the viral...as viral mRNAs would be in the course of viral infection), producing firefly luciferase. Firefly luciferase...absence of some viral proteins (compared to viral infection). Therefore, the roles/functions of individual...Addgene.org Browse Our Viral Vector Plasmids Read Our Lentiviral Vector Guide Read Our AAV Guide  ...
  7. Multiplexed Overexpression of Regulatory Factors (MORF) collection

    Type
    Blog Post
    Published
    March 30, 2023, 1:15 p.m.
    ... individually overexpressed and available for lentiviral packaging and delivery to target cells as a pooled... Fig. 1: Barcoded TF library was packaged in lentiviral particles and used to transduce human embryonic...the Zhang lab controlled their multiplicity of infection so that a single TF was delivered to each cell...Lentivirus Figure out How to Get the Most from Your Lentiviral Transduction Additional Resources on Addgene.org...
  8. Hot Plasmids - June 2020 - Barcoded CRISPR Library, Sparse Cell Labeling, Calcineurin Reporter, and DNA Staining Dye Alternative

    Type
    Blog Post
    Published
    June 2, 2020, 1:15 p.m.
    ...their loop region. After infecting cells with sgRNAiBAR library containing lentiviral vectors the iBARs can... CRISPR screens require a low multiplicity of infection (MOI) during cell library construction to ensure...data even when used at a high multiplicity of infection, because this setup allows for experimental replicates...
  9. Plasmids 101: Transformation, Transduction, Bacterial Conjugation, and Transfection

    Type
    Blog Post
    Published
    June 25, 2019, 12:54 p.m.
    ...This can be done with lentiviral and Adeno Associated Viruses (AAV). Lentiviral and AAV can be used to...releasing the newly formed viral particles that can infect other bacteria. In the lysogenic cycle, the phage... transduction. Transferred DNA once inside the infected bacterium can either exist as transient extrachromosomal...division. You can find all kinds of different lentiviral and AAV plasmids as well as ready-to-use viral...
  10. 5 Tips for Troubleshooting Viral Transductions

    Type
    Blog Post
    Published
    Aug. 11, 2016, 2:23 p.m.
    ...An estimated 320,000 viruses can infect mammals. Even more abundant are the Earth’s estimated 1031 bacteriophages...bacteriophages (viruses that infect bacteria), many of which are doing important work in our microbiomes...al., 1999). 5. Check your packaging cells for infection If your transductions aren’t working, you can ...transfected and produced infectious virus, they may get infected with this virus, and therefore, will be selectable...microscope and should appear fluorescent if they were infected. While there may be some low-level fluorescent...if the virus does not have the proper tropism to infect the packaging cells. Another method of ensuring...given viral stock will give you a sense of the infectivity of your viral stock, save you time, and allow...
  11. Production of Virus in Insect Versus Mammalian Cells

    Type
    Blog Post
    Published
    Nov. 5, 2024, 8:32 p.m.
    ...-293T cells. If you titrate your viral preps, lentiviral titration requires an additional couple of days...baculovirus, a family of viruses that specifically infect insects. This is what makes insect cells a popular...cells, but they require cloning specific AAV or lentiviral machinery into a baculovirus plasmid. Production...baculovirus construct, called a bacmid. Like AAV and lentiviral packaging plasmids, bacmids are readily available... round of virus, called P1 (or sometimes P0), infecting new Sf9 cells, and getting an amplified P2 virus...
  12. Reagent Repositories Are Speeding up Science During the Pandemic

    Type
    Blog Post
    Published
    Aug. 4, 2020, 1:15 p.m.
    ...Look DC, Perlman S (2006) Lethal Infection of K18-hACE2 Mice Infected with Severe Acute Respiratory Syndrome...proven useful to the study of SARS-CoV-2 are the lentiviral production and packaging vectors VSV-G and psPAX2...
  13. Viral Vectors 101: Viral Vector Elements

    Type
    Blog Post
    Published
    July 25, 2023, 1 p.m.
    ...protein that can also be pseudotyped to alter infectivity. Next, the virus must assemble and have appropriate...permanently insert the cargo into the host genome. Lentiviral-specific components Lentiviruses have gone through...for gamma-retroviruses. While not required for lentiviral production, they can be helpful for certain applications... applications and aid in ease of use. Our lentiviral guide outlines these components.     Fig....Resources on Addgene.org Addgene's most popular lentiviral plasmids Addgene's most popular retroviral plasmids...Parts of the AAV packaging plasmid Overview of Lentiviral Packaging Plasmids Adenoviral production and ...
  14. CRISPR 101: Mammalian Expression Systems and Delivery Methods

    Type
    Blog Post
    Published
    Sept. 24, 2015, 2:30 p.m.
    ...efficiency. Lentiviral transduction Cas9 and gRNA can be present in a single lentiviral transfer vector...plasmids provide the necessary components to make lentiviral particles. Stable, tunable expression of Cas9...Transient or stable expression of SaCas9 and/or gRNA. Infects dividing and non-dividing cells. AAV is least toxic...: Traffic Light Reporter System: Can evaluate lentiviral component delivery as well as genome repair by...
  15. Top Requested AAV of 2017: pmSyn1-EBFP-CRE

    Type
    Blog Post
    Published
    Jan. 17, 2018, 2:57 p.m.
    ... and requests are still pouring in! While our lentiviral service is going strong, the AAV service has ...partially control which cells are successfully infected by an AAV by altering your injection site and ...
  16. 27 Hot Plasmids from 2016

    Type
    Blog Post
    Published
    Dec. 22, 2016, 3:03 p.m.
    ...Science. 2013. PubMed PMID: 23328393 Wu lab human lentiviral CRISPR library     CRISPR pooled libraries enable...packaged it into lentivirus and used the resulting lentiviral library to generate a population of HEK293FT ...regulate the ability of WNV to induce cell death in infected cells (SEL1L, UBE2J1, EMC3, EMC2, DERL2, UBE2G2...Library. This complex second-generation CRISPR lentiviral library targets nearly all human protein-coding...from the CDC and cloned into a third generation lentiviral transfer vector. Each gene has been FLAG-tagged...apicomplexan organism Toxoplasma gondii to the infection of human fibroblasts. Toxoplasma mutants were ... genes were investigated for functions during infection of human cells, and one of them called “claudin-like...
  17. Plasmids 101: Gateway Cloning

    Type
    Blog Post
    Published
    Jan. 12, 2017, 3:30 p.m.
    ...recombination reactions that take place when lambda phage infects bacteria. In vivo, these recombination reactions...Gateway cloning to generate our desired constructs: lentiviral expression of the human KRAS gene in mammalian...level, and experimental purpose. For mammalian lentiviral expression, we could use a vector like pLenti...available at Addgene, including the Frew Lab Multiple Lentiviral Expression Systems (MuLE) Kit, the MultiSite ...
  18. Hot Plasmids: Spring 2025

    Type
    Blog Post
    Published
    June 3, 2025, 1:15 p.m.
    ...psPAX2 (Addgene #12260). HeLa cells were infected with 96 h lentiviral supernatant and selected with puromycin...tailored deactivation rates Addgene's own empty lentiviral backbones New recombinant antibodies for Glypicans...very own set of empty, HA-, and EGFP-expressing lentiviral backbones designed right here at Addgene. Here's...launching later this year!  Find Addgene's own Lentiviral backbone plasmids here! Figure 2: Addgene...HA-EGFP Puro (Addgene #236081), then generated lentiviral particles in HEK293T cells with pMD2.G (Addgene...
  19. Tips for a 1st Time CRISPR User (by a 1st Time CRISPR User)

    Type
    Blog Post
    Published
    March 7, 2017, 3:30 p.m.
    ...performing and analyzing a gene edit using Addgene’s lentiviral CRISPR tools. Schematic overview of CRISPR...stably expressing Cas9 via transduction with Cas9 lentiviral vector, lentiCas9-Blast (52962-LV, Figure 1)....expressing lentivirus at the indicated multiplicity of infection (MOI). Anti-vinculin Western blotting is a loading...
  20. AAVs in Retinal Gene Therapy

    Type
    Blog Post
    Published
    July 31, 2018, 12:55 p.m.
    ... has limited tropism in the retina, primarily infecting cells of the retinal pigmented epithelium (RPE...this gene can be targeted to RPE cells using a lentiviral vector and a clinical trial is ongoing. Moving...
Showing: 21 - 40 of 43 results