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We narrowed to 263 results for: Cre expression vector

Showing: 1 - 20 of 263 results

  1. Popular Retroviral Vectors and Their Uses in Scientific Research

    Type
    Blog Post
    Published
    July 24, 2018, 12:51 p.m.
    ...to use the pLKO.1 vector can be found here. Cre-Lox technology Puro.Cre empty vector (Plasmid #17408)   ... handling and expression of these vectors when used in experiments. Retroviral vectors make up a large...Transfer Vectors   Expressing your gene of interest pMKO.1 GFP (Plasmid #10676) Retroviral vector for cloning...cloning and expressing your gene of interest with GFP expression.  Cloning and expressing RNAi pMKO.1 ...Tools for RNAi! Cre-Lox technology CAG-GFP-IRES-CRE (Plasmid #48201) This retroviral vector from the Gage...interest. Lentiviral vectors Popular Lentiviral Transfer Vectors    Expressing your gene of interest ...lentiviral vector backbone from the Shih lab. You can find more lentiviral expression vectors (empty backbones...

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

    Type
    Blog Post
    Published
    Nov. 2, 2021, 1:15 p.m.
    ...with AAV DIO/Flex vectors and leaky expression can occur in cells that don’t express Cre or Flp, what can...can be expressed in cells where Cre is absent. Additionally, we have experienced that some vectors are much...using DIO/FLEx vectors for off-target expression.  Some classes of neurons transiently express TH during development...off-target expression. Figure created with BioRender.com   Strategies for optimizing expression So now... require gene expression in a specific cell type rely on transgenic models that express recombinases like... like Cre or Flp in their cells of interest and recombinase-dependent AAV vectors for selective transgene... is off-target or spurious expression of recombinase-dependent AAV vectors. In this article, we will discuss...

  3. Plasmids 101: FLEx Vectors

    Type
    Blog Post
    Published
    April 28, 2016, 2:30 p.m.
    ...have created a cassette that will express GeneR only in the presence of Cre. In this example, Cre would...tissue-specific Cre is provided. Since the FLEx switch ensures Cre-dependent reporter expression, the potential...: In the presence of Cre, GFP expression is lost, allowing for rescued expression of GeneR.   Sometimes...elements to turn off expression of one gene, while simultaneously turning on the expression of another! What...SSRs) Cre and FLP. SSRs bind DNA at target sites to induce site specific recombination events: Cre recombinase...FLEx switch that turns BFP expression off, while turning on mCherry expression. For this FLEx switch to ...Basic FLEx switch will express BFP in the absence of, or mCherry in the presence of Cre recombinase.   ...

  4. Top Requested AAV of 2017: pmSyn1-EBFP-CRE

    Type
    Blog Post
    Published
    Jan. 17, 2018, 2:57 p.m.
    ...inject your Cre-dependent mCherry mouse with the pmSyn-EBFP-Cre AAV. Because Cre expression is controlled... can be used to drive Cre expression specifically in neurons. AAV Delivered Cre - A useful tool for neuroscientists... could breed your Cre-dependent mCherry line with a separate line that expresses Cre in neurons, but both...pmSyn1-EBFP-Cre and other viral vector tools in the years to come. We’ll make many more viral vector tools ...most popular form), this viral vector is used to deliver DNA encoding Cre recombinase under the control...control where your gene of interest is expressed.  A cell-type specific Cre can provide you with that control...with a means to specifically activate expression of any Cre-dependent gene of interest in neurons. This ...

  5. Viral Vectors 101: Integrase-Deficient Lentiviral Vectors

    Type
    Blog Post
    Published
    May 13, 2025, 1:15 p.m.
    ... cycle of a lentiviral vector with an integrase-deficient viral vector. Created with BioRender.com. ...lentiviral vectors, how they work, and why you might choose them over integrating lentiviral vectors.  Before...integrase-deficient lentiviral vectors, let’s briefly revisit the basic biology of lentiviral vectors (for a more detailed...lentiviral vectors that are competent for one round of infection (AKA transduction in the viral vector world...leading to transient expression of gene products (Wu et al., 2004). Over time, the expression diminishes as ...lentiviral vectors? There are several reasons why you might choose an IDLV over a lentiviral vector: 1. No...2008). 2. Transient expression of transgenes/shRNAs If you want your cells to express a protein or nucleic...

  6. Advanced Uses of Cre-lox and Flp-FRT - A Neuroscientist’s View

    Type
    Blog Post
    Published
    Oct. 19, 2017, 1:54 p.m.
    ...transfected with both vectors. Flex vectors are the solution. Flex vectors expressing fluorescent cytoplasmic...control FLP and Cre expression have been developed. Read on to learn more about FLP-FRT, Cre-lox, and how... vivo, FLEx vectors expressing the light activatable ion channel under the control of Cre recombinase ...concentrations of vectors expressing the required recombinase. The high concentration of FLEx vectors guarantees...LDB) to the C-terminus of FLP or Cre (pCAG-CreERT2 #14797). These Cre/ FLP versions are retained in the...control without modification - either Cre is there or it’s not. Cre-mediated possibilities for site specific...sequence) and expressing it from a CAGGs promoter. However FLPe is still less efficient than Cre recombinase...

  7. Mouse Modeling, Part 1: Genetically Engineered Mice

    Type
    Blog Post
    Published
    July 11, 2019, 1:26 p.m.
    ...the Esr1 domain that blocks Cre expression. Then, Cre is expressed and Cre-mediated recombination of floxed...that regulates Cre expression. The most common drug used to induce the expression of Cre is tamoxifen. .... In tamoxifen-inducible Cre (Cre-ER) systems, Cre is fused to the ligand binding domain of estrogen receptor...doxycycline mediated activation of Cre to either induce or repress Cre expression using TetON or TetOFF systems...or eliminates the expression of a particular gene. Targeting vectors used to create knockout mice include...targeting vector, creating the floxed gene segment. Crossing of mice containing a floxed gene to a Cre-expressing...knockout/knockin mice, use the Cre-lox recombination system to express the transgene in specific cells...

  8. Plasmids 101: The protein expression toolbox

    Type
    Blog Post
    Published
    Feb. 16, 2023, 7:05 p.m.
    ...permanently induce expression? Check out our Retro expression vector and Lenti expression vector. Turn it on...protein expression. If you need the ability to control when you turn off expression for good, the Cre-Lox...knock out plasmids? Check out our Cre vector and Murine LoxP vector.   Turn it off for a little while ...induce expression? Check out Addgene's Lentiviral dCas9 SAM vector and Piggybac dCas9 SAM vector! On/off...inducible expression (more on this below) will both achieve temporary repression of protein expression. Addgene...appropriate promoter to express your cDNA, depending on the level of expression you would like. Check out...Addgene's Lentiviral dTAG cloning vector and SMASh degron tagging vector! Destabilizing domains Destabilizing...

  9. New and Upcoming Viral Vectors - September 2019

    Type
    Blog Post
    Published
    Sept. 12, 2019, 1 p.m.
    ...Flp-dependent Cre AAV in AAV9 and AAVrg. See our new additions here: Cre vectors pAAV-EF1a-fDIO-Cre (121675...directs strong, ubiquitous expression. This is a Cre-dependent switch that expresses nuclear mCherry in the...the absence of Cre, and expresses nuclear EGFP in the presence of Cre. Biosensor AAV (calcium sensors ...ubiquitous expression. pAAV-mDlx-NLS-mRuby2 (99130-AAVrg): The Dlx element directs expression in forebrain... Flp vectors pAAV-EF1a-mCherry-IRES-Flpo (55634-AAV1) pAAV-EF1a-Flpo (55637-AAV1) Viral vectors coming... of our viral vectors blog posts Find tips for preparing AAVs Download our viral vectors 101 eBook Resources...121675-AAV9, 121675-AAVrg)  pENN.AAV.hSyn.Cre.WPRE.hGH (105553-AAV5) Dre vector AAV phSyn1(S)-DreO-bGHpA...

  10. Viral Vectors 101: An Introduction to AAV

    Type
    Blog Post
    Published
    May 30, 2023, 1:15 p.m.
    ...cell-specific gene expression and viral infection. Cre or Flp dependent switches control gene expression via switches...(scAAV) vector. Full-length ssAAV vector genome of both polarities are rescued from the vector plasmid...re interested in expressing multiple small genes, you can design single rAAV vectors with multiple genes... to co-express them from one promoter. Specificity The ability of AAV to drive gene expression in specific...transgene expression, since you don’t have to wait for the host to replicate the DNA before expression. Now..., and Constance Cepko. "Distinct expression patterns of AAV8 vectors with broadly active promoters from...about Viral Vector Elements Resources on Addgene.org Read Our AAV Guide Find AAV Vectors Browse All ...

  11. AAVs CREATed for Gene Delivery to the CNS and PNS

    Type
    Blog Post
    Published
    Sept. 28, 2017, 2:01 p.m.
    ...cell-type-specific Cre, the polyA sequence is inverted only in the Cre-expressing tissues. This inversion creates a template.... By using this library to infect an animal expressing Cre in a cell type of interest, a scientist can...labeling is to inject a mix of AAV vectors that constitutively express a red, green, or blue (RGB) fluorescent...blue are the predominate colors expressed (figure 4c).   AAV Vector  Percent of Neurons Transduced   ... color expression into a two part system (figure 4d):  Part 1: A cocktail of three AAV vectors expressing...using AAV as a tool for gene expression in mammals. Subscribe to Viral Vector Blog Posts Additional Resources...studying the CNS and PNS! What is the CREATE method?  CREATE stands for Cre Recombinase-based AAV Targeted Evolution...

  12. Top Requested Lentivirus and AAV of 2016

    Type
    Blog Post
    Published
    Jan. 6, 2017, 3:56 p.m.
    ...that express cre recombinase. Typically, this feature is used to attain cell-specific expression in transgenic...blast LentiCas9-blast is a Cas9 expression vector developed by Feng Zhang’s lab at the Broad Institute... is a dual-vector system, meaning it is typically used in conjunction with a second vector that delivers...lentiGuide-Puro. The alternative single-vector systems typically express Cas9 and a gRNA from the same plasmid...constructs (i.e., using a dual-vector system as opposed to a single-vector system) has several benefits....lentiviruses expressing various gRNAs. It’s better to compare the phenotypic effects of expressing various ...transductions with a single-vector system). Tips for using this plasmid Cas9 expression is typically cytotoxic...

  13. Delivery Methods for Generating iPSCs

    Type
    Blog Post
    Published
    April 17, 2018, 1:37 p.m.
    ...lentiviral expression of OSKM reprogramming factors: Mouse Expression Vectors Human Expression Vectors...Excisable Cre-lox lentiviral vectors: This approach is the same as using a standard lentiviral vector, but ... residual expression piggyBac Excisible Medium Medium Generates transgene-free and vector-free cells...harmful viral particles that express oncogenes, such as Myc. Viral vectors also have the largest genomic...so either a single polycistronic vector or multiple single-gene vectors can be used to package reprogramming...reprogramming. Additionally, lingering expression or re-expression of viral transgenes in iPSC-derived cells... retroviral vectors. This makes it possible to use a polycistronic cassette that expresses multiple reprogramming...

  14. 22 Hot Plasmid Technologies from 2014

    Type
    Blog Post
    Published
    Jan. 6, 2015, 5:21 p.m.
    ...from Cre-based Brainbow-expressing cells. Autobow plasmids are all-in-one versions which express self-... existing transposon and vector systems and creating an all-synthetic vector that included only the elements...compatible Level 0 vectors are directionally assembled into a Level 1 vector creating a single transcriptional... into a destination vector in a predefined order. Finally, the destination vectors are used with Multisite... eight entry vectors can be used for each Multisite Gateway compatible destination vector for a maximum... to Addgene, including lentiviral and AAV expression vectors for certain variants. Klapoetke et al.,... These vectors, termed RUSH (For ROSA26 U6 short hairpin) and CRUSH (Conditional RUSH) use Cre-mediated...

  15. New and Upcoming Viral Vectors - May 2020

    Type
    Blog Post
    Published
    May 28, 2020, 1:15 p.m.
    ...preps for expressing SARS-CoV-2 proteins ChR2 for targeted expression DREADDs GFP dependent Cre and FLPo...preps SARS-CoV-2 protein expression The Krogan lab quickly shared plasmids expressing SARS-CoV-2 proteins ...2xStrep-IRES-Puro: Expression of the SARS-CoV-2 ORF3a Lentiviral preps for expressing the E protein (pLVX-EF1alpha-SARS-CoV...serotypes, as well as a new Cre dependent GFP control plasmid for expression in forebrain GABA-ergic interneurons...for targeted expression. Plasmid 75470 is now available in AAV1 for Flp-dependent expression of ChR2(H134R...dependent Cre. The two segments come together in the presence of GFP to form a functional Cre enzyme that...GFP expression patterns, thus allowing you to further restrict gene activation to cells expressing both...

  16. The AAVantages of AAV in CRISPR Screens

    Type
    Blog Post
    Published
    Feb. 4, 2025, 2:15 p.m.
    ...large packaging capacity and stable expression of lentiviral vectors make them an attractive option. However...using different types of AAV. Expression Another advantage of AAV vectors is how the cargo — in this case...multi-plasmid system, where you have one AAV vector dedicated to expressing Cas9, while the other houses the gRNA...cases, AAV vector screens may be AAVantageous!       In vivo, in vitro, ex vivo CRISPR screens can be carried...preferred delivery method for in vivo CRISPR screens. AAV vectors can be made at high titers equal to those...Cpf1). Even more creative options involve generating strains of mice that stably express Cas effectors in... aided by advancements in in vivo CRISPR screens. AAV vectors have played a large role in these advancements...

  17. Viral Vectors 101: The AAV Retrograde Serotype

    Type
    Blog Post
    Published
    April 27, 2023, 1:15 p.m.
    ...by injecting a Cre-dependent AAV into Broca’s area of a mouse specifically expressing Cre in the hippocampus...your system. Chemogenetic vectors  Expression of retrograde serotype vectors is present at both the injection...phenomenon is to use a retrograde recombinase-expressing vector (e.g. Cre or FLP) to transduce the projection pathway... However, the Cre-dependent AAV cargo would only become activated in the presence of Cre recombinase, ...-dependent vectors, this can cause challenges for the experimental design as these vectors can exhibit...tracing, but often at the cost of toxicity, low expression, or poor scalability.  Scientists at Janelia ...infects neurons, directs high-level transgene expression, and has retrograde functionality to monitor ...

  18. New Tools Enable CRISPRa for Neuroscience Applications

    Type
    Blog Post
    Published
    July 2, 2019, 12:51 p.m.
    ... or by mating with Cre-expressing mice. Figure 1: (A) Schematic of the Cre-dependent SPH construct... (i.e., how many sgRNA expression cassettes will fit). Cre-dependent expression of the SPH activator paired... ubiquitous expression of sgRNA(s) and mCherry (vector 1) with neuron-specific expression of dCas9-VPR... of Cre-dependent mouse lines for overexpressing genes within discrete cell populations makes Cre-dependent...plasmids used to express CRE under neuron-specific promoters (aCaMKII and hSyn). Created with BioRender....ubiquitous expression of sgRNA (top) and neuron-specific expression of dCas9-VPR (bottom). Created with BioRender.com...construct). More importantly, the expression of this construct is Cre-dependent, enabling spatiotemporal...

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

    Type
    Blog Post
    Published
    Aug. 20, 2019, 12:31 p.m.
    ... gene is cloned into a viral shRNA expression vector and the vector particles are delivered into the brain...or lentiviral vectors in our previous blog posts.  Viral vector injection Viral vectors allow a tight ...using viral vectors By modulating neuronal gene expression and activity, you can use viral vectors to study...modification? and 2. Which viral vector should be used? Modifying gene expression Generally speaking, one may...manipulation can also reduce expression levels of certain genes. A popular method uses Cre recombinase on transgenic.... On the other hand, lentiviral vectors are superior packaging vectors for larger genes - they can hold...around 1012-1013 vg/ml (vector genomes per milliliter) and lentiviral vectors around 108 IU/ml (infectious...

  20. Your Lentiviral Plasmid FAQs Answered

    Type
    Blog Post
    Published
    April 23, 2014, 1:08 p.m.
    ...knockdown, Tet and Cre-regulated expression, CRISPR genome editing, and more. Not surprisingly, we receive...ingredients: the lentiviral packaging vector, a transfer vector including the gene of interest, and the... to drive expression of the gene of interest. Consequently, the levels of protein expression tends to ...3rd-generation transfer vectors apart? A3: Addgene defines 2nd- or 3rd-generation transfer vectors based on whether...between 2nd- and 3rd-generation vectors? What does this mean for transfer vectors? A4: The lentiviral packaging...generation of the transfer vector. Q5: What envelope glycoprotein will be expressed on virus particles? A5...cytotoxic precluding the long-term expression of lentiviral vectors in producer cell lines. Identifying...
Showing: 1 - 20 of 263 results