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We narrowed to 148 results for: lenti

Showing: 21 - 40 of 148 results

  1. 15 Years of Addgene: The Top 15 Plasmids

    Type
    Blog Post
    Published
    Jan. 8, 2019, 1:54 p.m.
    ...pSpCas9(BB)-2A-GFP (PX458). lentiCRISPR v2 - This 3rd generation lentiviral transfer vector also from the...promoter. It’s a 3rd generation lentiviral backbone that must be used with lentiCas9-Blast or with cell lines...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...the top requested plasmid of 2015. What makes lentiCRISPR v2 great? It produces a ~10 fold higher titer...CRISPR pooled library screening experiments. Find lentiCRISPR v2.(If you’ve peeked through the rest of the ...

  2. Your Top Requested Plasmid in 2015!

    Type
    Blog Post
    Published
    Dec. 30, 2015, 3:30 p.m.
    ...does it work? LentiCRISPR v2 purpose As its name suggests, lentiCRISPR v2 is a lentiviral transfer vector...the Addgene repository in 2015 was... lentiCRISPR V2   LentiCRISPR v2 originates from Feng Zhang’s lab...designed to have increased lentiviral titer as compared to previous lentiviral vectors. It can be used both...respectively, use lentiCRISPR v2 as the backbone for their many gRNAs. The high titer lentivirus production ... the Addgene Website Visit our Lentiviral Guide Pages Find Lentiviral Plasmids Find CRISPR Pooled Libraries...production afforded by lentiCRISPR v2 is key to its efficient use in screening experiments; large amounts of virus...pooled library screens. Availability and Use LentiCRISPR v2 is available from Addgene both as a single...

  3. Viral Production at Addgene

    Type
    Blog Post
    Published
    Oct. 24, 2023, 1:15 p.m.
    ...Browse our AAV vector collection. Lentivirus Production Lentiviral preparations ("-LV” catalog items)...Concentrated lentiviral preparations (“-LVC” catalog items) are generated from lentiviral preparations...being frozen. Specifically, lentiviral particles are collected from the lentiviral preparation by precipitation...for in our reported titers. Lentiviral vectors are titered using a lentiviral droplet digital PCR (ddPCR...of the transfer plasmid.   Lentivirus resources Browse lentiviral preps available from Addgene. After...through how we produce both our AAV preps and our lentiviral preps.   Viruses are generated using standard... Cell culture medium (OptiPro SFM) containing lentivirus is first cleared by low-speed centrifugation ...

  4. Top Requested Plasmid of 2017 - pMD2.G

    Type
    Blog Post
    Published
    Jan. 10, 2018, 4:13 p.m.
    ... of 2017 is the lentivirus envelope plasmid pMD2.G from Didier Trono’s lab! Lentivirus envelope vector... producing our ready-to-use lentivirus preps. You can find our lentivirus production protocol on our website...titering your lentivirus in another blog post. If you need a quick primer on how lentiviruses work, check...2015 and 2016 were CRISPR plasmids), but so are lentiviral vectors, many of which are used to deliver Cas9...promoter. Envelope proteins are a key component of lentiviruses. These proteins coat the virus and help determine...widely used and requested because it enables lentiviruses to infect many different types of cells. This...check out our lentivirus guide page. For more protocols and information, be sure to check out the Trono Lab...

  5. 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... while both AAV and lentivirus have low immunogenicity, AAV still beats lentivirus. In mice, AAV is almost...vector delivery methods. Lentivirus has limited packaging options, with most lentiviral vectors being packaged...large packaging capacity and stable expression of lentiviral vectors make them an attractive option. However...made at high titers equal to those achieved with lentivirus but offer an improved safety profile, customization...expression in many mouse tissues. Safety AAV and lentivirus have different safety profiles that often affect...experiments. AAV can be safely handled at BSL-1, while lentivirus requires a BSL-2 setup. This requires a less ...

  6. Genome-wide Screening Using CRISPR

    Type
    Blog Post
    Published
    Aug. 18, 2015, 2:30 p.m.
    ...use lentivirus to deliver a pooled population of gRNAs to Cas9 expressing cells. Pooled lentiviral CRISPR...generate lentivirus (B). Cas9-expressing cells or wild-type cells are treated with lentivirus containing... Quick Guide to All Things Lentivirus Get Tips on Titering Your Lentivirus Plasmids 101: NGS Quality Control...a heterogeneous population of gRNA-containing lentiviral transfer vectors, each targeting a specific gene...synthesized. Pooled gRNAs are then cloned into lentiviral transfer vectors to create the CRISPR library... concentration that is sufficient to generate lentivirus. Be sure to use next-generation sequencing to...amplification. If you've obtained a ready-to-use lentiviral preparation from Addgene, you can skip the steps...

  7. Viral Vectors 101: Gamma-Retroviral Packaging Systems

    Type
    Blog Post
    Published
    Aug. 6, 2024, 1:15 p.m.
    ... cells a virus can infect. Note: While both lentiviruses and γ-retroviruses use the same gene products... well as the viral LTRs, differ. As a result, lentiviral and γ-retroviral packaging plasmids are not interchangeable...using 293T cells This method is very similar to lentiviral packaging methods. The three components described...How do engineered γ-retroviruses differ from lentiviruses? There are a few important differences between...between engineered γ-retroviruses and lentiviruses. First, these viruses were derived from different genomes...genomes (MoMLV and MSCV for γ-retrovirus; HIV for lentivirus). Additionally, γ-retroviruses can only transduce...during mitotic breakdown of the nuclear envelope. Lentiviruses can transduce both dividing and non-dividing...

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

    Type
    Blog Post
    Published
    Nov. 17, 2016, 3:30 p.m.
    ... Service Suggestion Form. Lentivirus As some of the most popular lentiviral vectors in the repository ... of our new Viral Service, we’re distributing lentivirus (with many CRISPR tools included among the preps...collection. We’ll provide a brief rundown of what lentiviral and AAV preps are available below, but you can... tools, we’re starting the Viral Service with lentiviral preps for the delivery of Cas9 endonuclease, ...we’ve got viruses to help you out. Of course, lentiviruses are used in experiments other than just those...those involving CRISPR and so we also have lentivirus for delivering control shRNAs, GFP, and rtTA from ...with viruses including advice on how to titer lentiviral preps, troubleshoot viral transductions, and ...

  9. Delivery Methods for Generating iPSCs

    Type
    Blog Post
    Published
    April 17, 2018, 1:37 p.m.
    ...considered safe for clinical applications.     Lentiviral: Lentiviral vectors infect dividing and nondividing...Excisable Cre-lox lentiviral vectors: This approach is the same as using a standard lentiviral vector, but ...transgene reactivation, residual expression Lentivirus Integrating High Low Efficient and Stable Genome...iPSC-transplanted mice. Cre-deletable or Tet-inducible lentiviruses address some of these concerns, but overall ...reprogramming factors driven by one promoter. While lentivirus has similar rates of reprogramming when compared...available from Addgene. Another drawback is that lentiviral vectors insert in different genetic locations...could be affected by the location of insertion. Lentiviral insertion can also disrupt the expression of ...

  10. New and Upcoming Viral Vectors - May 2020

    Type
    Blog Post
    Published
    May 28, 2020, 1:15 p.m.
    ... of the AAV and lentiviral preps we have released in the last few months: Lentiviral preps for expressing...plasmids into lentiviral preps to speed up COVID-19 research even further. The following lentiviral preps are... GFP dependent Cre and FLPo And more!  New lentiviral preps SARS-CoV-2 protein expression The Krogan...2xStrep-IRES-Puro: Expression of the SARS-CoV-2 ORF3a Lentiviral preps for expressing the E protein (pLVX-EF1alpha-SARS-CoV...Dolcetto pooled library is now available as a lentiviral prep. It's a human CRISPR inhibition library ...-wide inhibition screening. Find the Dolcetto lentiviral prep here Control AAV Control AAV allow researchers...

  11. 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...expressing the Cpf1 multiplex system from a lentiviral vector.  Lentiviruses carry a (+) strand RNA copy of the... options for Cpf1 multiplexing: Transfection, lentivirus, and AAV Cpf1’s ability to process its own pre-crRNA... multiple expression platforms: transfection, lentiviral transduction, and AAV transduction.  In most ...Cpf1. This means Cpf1 can bind and cleave the lentiviral RNA, preventing packaging of the virus.  Reversing...of the direct repeat protects the (+) stranded lentivirus RNA from Cpf1-mediated cleavage. This reversing...

  12. Tips for a 1st Time CRISPR User (by a 1st Time CRISPR User)

    Type
    Blog Post
    Published
    March 7, 2017, 3:30 p.m.
    ...expressing Cas9 via transduction with Cas9 lentiviral vector, lentiCas9-Blast (52962-LV, Figure 1). Some cells...Lines with Lentivirus Isolating a Monoclonal Cell Population by Limiting Dilution Lentivirus Production...performing and analyzing a gene edit using Addgene’s lentiviral CRISPR tools. Schematic overview of CRISPR...Cas9 expression in A549 cells transduced with lentiCas9-blast. Anti-Cas9 Western blotting was performed...of A549 cells transduced with Cas9 expressing lentivirus at the indicated multiplicity of infection (MOI...lines generated from A549 cells transduced with lentiCas9-blast. A549 cells were transduced (MOI = 37) and...PubMed PMID: 18007609. Addgene Materials Used 1. lentiCas9-Blast (Plasmid #52962) was a gift from Feng Zhang...

  13. Viral Vectors 101: The Retroviral Lifecycle

    Type
    Blog Post
    Published
    July 27, 2023, 1:15 p.m.
    ... the lentiviruses (like HIV-1) — that have been developed into lentiviral vectors. Lentiviruses are sometimes...Resources on addgene.org Addgene's Lentiviral Guide Most popular lentiviral plasmids γ-Retrovirus Guide References... 1: Gamma-retrovirus genome (left) and an HIV lentiviral genome (right.)  HIV seems an unlikely candidate...Addgenie Rebecca Hutcheson for her assistance with lentiviral replication.  Resources and References More ...PMCID: PMC372876 Dong, W., & Kantor, B. (2021). Lentiviral Vectors for Delivery of Gene-Editing Systems ...

  14. Download Science-Themed Zoom Backgrounds from Addgene

    Type
    Blog Post
    Published
    April 22, 2021, 1:15 p.m.
    ...ready-to-use AAV and lentiviral preps! Download the green AAV background.       Some of our lentiviral plasmids ...Download the orange lentivirus background.         We also have ready-to-use lentiviral preps for COVID-...background.     If you’re working with AAV or lentivirus in your research, you might want to use one of...COVID-19 research, pooled CRISPR lentiirus libraries, pooled barcoding libraries, and more. Download the green...

  15. Getting Started with Behavioral Neuroscience: Standardizing Experiments and Using Viral Vectors

    Type
    Blog Post
    Published
    Aug. 20, 2019, 12:31 p.m.
    ...brain region of interest. AAV or lentivirus?  Both AAV and lentiviral vectors are used for intracerebral...wider diffusion is required. On the other hand, lentiviral vectors are superior packaging vectors for larger...astrocytes, and AAV4 targets mostly astrocytes. Lentiviral vectors are pseudotyped in most cases with VSV-G...injection. Find more details about choosing AAV or lentiviral vectors in our previous blog posts.  Viral vector...1013 vg/ml (vector genomes per milliliter) and lentiviral vectors around 108 IU/ml (infectious units per...

  16. Making CRISPR Plasmids Using Fragmid

    Type
    Blog Post
    Published
    Aug. 29, 2024, 1:15 p.m.
    ...Mammalian Lentivirus pRDA_512 (RSV-driven; lentiGuide-based) Mammalian Lentivirus pRDA_722...722 (CMV-driven; lentiCRISPRv2-based; preferred over 512) Mammalian Lentivirus pRDA_789 (CMV-driven...Organism (Mammalian or drosophila) Delivery type (lentivirus, AAV, transposon, Plasmid) Destination vector...

  17. Viral Vectors 101: Virus Safety

    Type
    Blog Post
    Published
    June 22, 2023, 1:15 p.m.
    ...viruses grown in the lab are gamma retrovirus, lentivirus, adenovirus, and adeno-associated virus (AAV)...humans, earning this virus a BSL-2 classification. Lentivirus (a type of retrovirus) and gamma retrovirus require...and required in BSL-2 labs. When working with lentivirus, many organizations require or recommend disposable...you have to work with BSL-2 materials, such as lentivirus. Most of this work will need to be done in a ...that particles are not sprayed into the air. For lentivirus and other BSL-2 materials, you’ll need to use...for extra security. Finally, when spinning down lentivirus, you’ll need to use centrifuge bin covers, which...

  18. CRISPR 101: Epigenetics and Editing the Epigenome

    Type
    Blog Post
    Published
    June 24, 2020, 5:45 p.m.
    ...Core, as well as pLV-dCas9-p300-P2A-PuroR for lentiviral expression. Figure 1: dCas9-p300 adds ...decrease methylation and activate transcription. A lentiviral vector with the same modifier, Fuw-dCas9-Tet1CD...Jaenisch’s lab in plasmid form or as ready-to-use lentivirus. Figure 2: dCas9-Tet1 demethylates cytosines...Tet-dependent (TetO-dCas9-D3A) constructs. For lentiviral expression, Fuw-dCas9-Dnmt3a and Fuw-dCas9-Dnmt3a-P2A-tagBFP...with the former also available as ready-to-use lentivirus. Figure 3: dCas9-DNMT3A methylates cytosines...hUbC-dCas9-MQ1(Q147L)-EGFP is also available for lentiviral transduction. Lysine-specific Demethylase 1 (...

  19. Three Tips for Preventing Viral Plasmid Recombination in Your Samples

    Type
    Blog Post
    Published
    Sept. 14, 2021, 1:15 p.m.
    ... Viral vectors are prone to recombination In lentiviral vectors, recombination often occurs between the...full length plasmid.   Figure 1: The full lentiviral plasmid is expected to be >12 kb. However if ...noticed that in Stbl3 bacterial cultures with lentiviral vectors, the flat white colonies contained the... Remarkable stability of an instability-prone lentiviral vector plasmid in Escherichia coli Stbl3. 3 Biotech... (2007) Improved recombinational stability of lentiviral expression vectors using reduced-genomeEscherichia...

  20. Pairing CombiGEM and CRISPR for Combinatorial Genetic Screening

    Type
    Blog Post
    Published
    April 12, 2016, 2:30 p.m.
    ...digestion and ligation steps to build barcoded lentiviral plasmids containing one or more gRNAs. As each..., the ligation products are a diverse pool of lentiviral plasmids. Multiple rounds of digestion and ligation...for CombiGEM-based assembly into the CombiGEM lentiviral vector backbone pAWp12 (Figure 2). Cloning from...from the pAWp28 storage vector to the pAWp12 lentiviral vector should retain the diversity in your gRNA...recessive genetic screening in mammalian cells with a lentiviral CRISPR-guide RNA library." Nature biotechnology...
Showing: 21 - 40 of 148 results