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We narrowed to 199 results for: guide rna expression plasmid

Showing: 101 - 120 of 199 results

  1. DAP arrays for multiplex gene editing

    Type
    Blog Post
    Published
    July 7, 2022, 1:15 p.m.
    ...locus of a bacteria host encodes multiple guide RNAs (gRNAs) on a single array to target the genome of...including previous tRNA-gRNA arrays, that rely on an upstream lengthy promoter to express the gRNA array, DAP ...assembled tRNA-gRNAs is placed downstream of a lengthy promoter, which is used to drive the expression of the... the array. After expression, the individual gRNAs are released by endogenous tRNA processing machineries... Gao Lab demonstrated that the tRNA-gRNA array can drive the expression of itself, without using any additional...design examples of using Addgene plasmids hCtRNA_FT (#186715) and hCtRNA_VT (#186716).   Fig. 2: ...scalable and efficient in plasmid and viral vectors. In applications when repetitive tRNA sequences must be avoided...

  2. Plasmids 101: Repressible Promoters

    Type
    Blog Post
    Published
    Dec. 20, 2022, 2:15 p.m.
    ...to be expressed. These permit exquisite control of gene expression and tracing of gene expression across... basal expression. Co-expression of repressor QS along with QF leads to intermediate expression from QUAS...transgene permits directed expression of that gene in cells that also express GAL4. Usage of this system...UAS to examine the expression of reporter genes, or to combine reporter expression from one promoter with...basal state, and co-expression of the inducer QF can increase QUAS driven expression by ~3,300-fold in ... Shen. “Controlling gene expression with the Q repressible binary expression system in Caenorhabditis ... with transgene or siRNA expression from the other. The Q system Potter et al. from Liqun Luo’s lab developed...

  3. Nanoblades: Tiny CRISPR Ninjas for Genome Editing Difficult Cells

    Type
    Blog Post
    Published
    Sept. 26, 2019, 12:50 p.m.
    ...and Cas9 expression plasmids. These results are in line with previous research showing that the method of...Addgene.org Check out our comprehensive CRISPR guide Find CRISPR plasmids and resources Learn about viral production...in place of SpCas9. gRNA A gRNA targeting a DNA sequence of interest is expressed in 293T cells and loaded...same guide. Nanoblades also had lower off-target effects when compared to DNA transfection of gRNA and ...infiltrate cells. Options for CRISPR delivery include plasmid transfection, RNP electroporation, and viral transduction...Nanoblades, different viral envelope protein(s) are expressed to pseudotype Nanoblades. The team found that ...types they tested. Interested in using Nanoblades? Plasmids are available from Addgene. Genome editing primary...

  4. Degrading DNA with Cascade-Cas3

    Type
    Blog Post
    Published
    Feb. 11, 2025, 2:15 p.m.
    ...Liao, M., & Ke, A. (2018). Structure basis for RNA-guided DNA degradation by Cascade and Cas3. Science,...Additional resources on Addgene.org CRISPR guide Cascade-Cas3 Plasmid collection ...its partner in crime, Cascade. Find Cascade-Cas3 plasmids in Addgene's collection! A “complex” system Cas3...challenging. It can be difficult to ensure comparable expression of all components of Cascade for maximum efficiency... Various labs have designed all-in-one Cascade plasmids — such as the Tomoji Mashimo lab and the Tilmann...efficiency of these systems, though consistent expression can still be a challenge. A multitasking Cas ...a cost — the previously mentioned issues with expressing all Cascade components can make Cas9 easier to...

  5. Harnessing Bacterial Toxins for Allelic Exchange

    Type
    Blog Post
    Published
    Aug. 15, 2019, 12:30 p.m.
    ...Tight control of toxin expression is absolutely necessary, because leaky expression of toxin could select...Central PMCID: PMC4862005. Jiang, Wenyan, et al. "RNA-guided editing of bacterial genomes using CRISPR-Cas...Improvement of pCVD442, a suicide plasmid for gene allele exchange in bacteria." Plasmid 51.3 (2004): 246-255. PubMed...introduce a mutation in the chromosome is to disrupt expression of a gene with an antibiotic resistance cassette...in the chromosome, sometimes interfering with expression of surrounding genes. However, there are ways...exogenous enzymes, require multiple transformation and plasmid curing steps, and can generate off-target mutations...a mutated allele introduced from a conjugative plasmid replaces the chromosomal copy. This is a versatile...

  6. Starter Guide to induced Pluripotent Stem Cells (iPSCs) Part 2:  Reprogramming and Transdifferentiation

    Type
    Blog Post
    Published
    Nov. 6, 2018, 1:12 p.m.
    ... [6], plasmid electroporation (episomal) [7, 8] and mRNA transfection [9]. Many of the plasmids used for...four reprogramming factors can be delivered and expressed in multiple somatic cells via various methods....Neurons [32, 33, 34] You can find a variety of plasmids for differentiation here. Transdifferentiation...transdifferentiated in vivo to pancreatic β-like-cells with the expression of pancreatic and duodenal homoeobox gene1 (PDX1...transdifferentiation is usually carried out by expressing transcription factors specific to the lineage.... Davis, R.L., H. Weintraub, and A.B. Lassar, Expression of a single transfected cDNA converts fibroblasts...Pancreatic and duodenal homeobox gene 1 induces expression of insulin genes in liver and ameliorates streptozotocin-induced...

  7. Antibodies 101: Affinity Reagents

    Type
    Blog Post
    Published
    April 14, 2022, 1:15 p.m.
    ...enough to be expressed in bacterial and other cell systems. Since the majority of these alternative reagents...Antibody GuideRecombinant antibodies available from AddgeneBrowse our recombinant antibody plasmid collection...I love Addgene's new Antibody Guide and not just because I helped create it. But while antibodies, as...could take the needed steps to continue where the guide left off - namely, a blog post devoted to the other... of disulfide bonds, monobodies can be easily expressed in transfected eukaryotic cells, allowing for ...Aptamers are not proteins at all. These high-affinity RNA molecules can bind to a wide variety of targets, ...Resources Additional resources on the Addgene blog Plasmids 101: Aptamer FluorophoresAntibodies 101: scFVs...

  8. GPCRs: How Do They Work and How Do We Study Them?

    Type
    Blog Post
    Published
    Feb. 11, 2021, 2:15 p.m.
    ...ligand-bound GPCRs of interest. The TRUPATH plasmid kit consists of 20 plasmids encoding 14 alpha, 2 beta, and 4 ...inhibition). AAV preps from DREADD plasmids allow you to easily express a DREADD receptor in a specific ...quick guide to chemogenetics Resources on Addgene.org Check out Addgene's chemogenetics guide Find chemogenetics...response? Let’s take a look at a few examples with plasmids deposited at Addgene.  PRESTO-TANGO: The ligands...resource called PRESTO-TANGO (parallel receptorome expression and screening via transcriptional output - TANGO...factor from the receptor, which can then activate expression of a luciferase reporter in the nucleus. The ...Bryan Roth’s lab also assembled a collection of plasmids to elucidate the role of 14 of the 16 non-visual...

  9. What's New in CRISPR - September 2019

    Type
    Blog Post
    Published
    Sept. 10, 2019, 12:56 p.m.
    ...Read our CRISPR guide Find CRISPR plasmids by function Find recently deposited plasmids ...CRISPR plasmids available at Addgene. We will still periodically focus on specific CRISPR plasmid tools...an extensive RNA scaffold and a domain needed for DNA unwinding. They’ve deposited plasmids for active ...for E. coli and human expression. Read the paper in Nature Find the CasX plasmids Drug inducible transcriptional...vector sequence. Homology arms that flank the donor plasmid cargo are complementary to either side of the double-stranded... Acids Research Find the drug inducible Cas9 plasmids E. coli genome-wide inhibition library In the...targeting requires two sgRNAS: one that targets the knock-in site and a universal sgRNA that targets the donor...

  10. Lentiviral Vector Uses and Overview

    Type
    Blog Post
    Published
    May 19, 2016, 2:30 p.m.
    ...consisted of three plasmids: the packaging, envelope, and transfer plasmids. The packaging plasmid carried a mutated... packaging and envelope plasmids are two of Addgene’s most requested plasmids! Lentiviral particles with... make stable transgene-expressing or knockout cell lines. Many CRISPR plasmids are designed for lentiviral... of Addgene’s most requested plasmids are used with lentiviral expression systems. If you’re new to the...lentivirus, check out our lentiviral plasmid and biosafety guides before beginning your experiment. Let...into the genome, permitting long-term transgene expression, but they could only infect actively dividing...non-dividing cells, but without sustained transgene expression. To design a viral vector system that could do...

  11. New Optimized Genome-wide CRISPRko, CRISPRi, and CRISPRa Libraries

    Type
    Blog Post
    Published
    Oct. 4, 2018, 12:44 p.m.
    ...domain. These mutations result in an inactive RNA-guided DNA binding protein (dCas9). dCas9 is then tethered...et al., 2014). The sgRNA or tracrRNA sequences can also be modified to include RNA domains that recruit...Sanson et al., 2018) . This tracrRNA was combined with the sgRNA expression vector allowing the screen ...CRISPRa) to regulate gene expression. Some CRISPR libraries contain many sgRNAs per gene to increase confidence...Calabrese: human CRISPRa sgRNA library In addition to inhibiting gene expression, dCas9 can also be used... that consists of inactive Cas9-VP64, a sgRNA with two MS2 RNA aptamers, and the  MS2-P65-HSF1 helper ...screens can help reveal the function of lowly expressed genes or genes that are more drastically affected...

  12. Adenoviral Vector Production and Troubleshooting

    Type
    Blog Post
    Published
    June 14, 2018, 11:44 a.m.
    ...recombinant adenoviral plasmid construct, please see Addgene’s Adenoviral Guide webpage, and references...Resources on Addgene.org Find Adenovirus Plasmids Adenovirus Guide Page  ...death of transduced cells and loss of transgene expression (Interestingly, the strong immunogenicity of ...capacity is limited to 8.2 kb, and in vivo transgene expression ceases relatively quickly due to immune response... capacity (up to 36 kb!), long-term transgene expression and negligible toxicity. However, their production...down into 5 key steps: Construction of the rAdV plasmid (~1 week): The AdEasyTM system is the most popular...adenoviral vector constructs. It consists of 2 plasmids: a shuttle vector (in which the transgene of interest...

  13. Making CRISPR Plasmids Using Fragmid

    Type
    Blog Post
    Published
    Aug. 29, 2024, 1:15 p.m.
    ...resources from Addgene Plasmids 101: Modular Cloning Addgene's CRISPR Guide Plasmids 101: Golden Gate Cloning...restriction digest, and then plasmid sequencing if you can. To quote Doench, “Whole plasmid sequencing is just ...correctly banded clones for plasmid sequencing and found 98% of the plasmids were perfectly correct. Because...pRDA_757 (Piggybac; constitutive expression) Mammalian Plasmid pRDA_791 (contains only orio and...the assembled plasmid. It shows you each component, with the ID of the component plasmid, component name...the component plasmids on the Addgene website. Step 4: Naming your assembled plasmid and generating...structure takes a lot of the design work out of the plasmid creation process. Each module of Fragmid represents...

  14. Plasmids 101: Biotinylation

    Type
    Blog Post
    Published
    Nov. 15, 2018, 1:50 p.m.
    ...more on this below) it can be incubated or co-expressed with avidin or a structurally similar protein ...ABC and IHC check out Thermo Fisher Scientific's guide. There are an array of other molecular biology applications... been shown to effectively biotinylate AviTag expressing proteins in bacteria, yeast, insect and mammalian...biotinylating proteins with BirA. You can find plasmids that contain both AviTag and BirA at Addgene! ...Photobiotin can be used to non-selectively label DNA and RNA. Photobiotin acetate consists of a biotin molecule...., & Zhu, Y. “A non-radioactive method for small RNA detection by northern blotting.” Rice 7.1 (2014):... shift assay to examine specific dsDNA, ssDNA or RNA–protein interactions.” Nucleic Acids Research, 23.18...

  15. Typing CRISPR Systems

    Type
    Blog Post
    Published
    March 18, 2025, 1:15 p.m.
    ... binds the guide RNA (shown as mature crRNA) and binds the RNA target before initiating RNA cleavage. ...Schematic of a Cascade complex (blue subunits) with a guide RNA (green and orange) bound to the target DNA with... exclusively targets RNA. Cas13 has become a natural successor to traditional RNA interference, as it ...target and degrade select RNA transcripts, or be engineered to conduct direct RNA editing. There are four...Additional resources on Addgene.org CRISPR guide CRISPR plasmids CRISPR references ... you need to ensure every unit of the complex expresses at similar levels. It was only recently that researchers... researchers began building optimal plasmids to harness the power of Class 1 systems. Class 1 CRISPR systems...

  16. Beyond the Blood Brain Barrier: PHP.B Enters the Central Nervous System Via the LY6A Receptor

    Type
    Blog Post
    Published
    July 23, 2019, 12:46 p.m.
    ... one, Ly6a, showed differential protein and RNA expression between the brains of C57BL/6J mice and BALB...Deverman Lab when they looked at LY6A protein and RNA expression patterns, the PHP.B permissive phenotype of...phenotypic effects such as those that affected gene expression, mRNA splicing, or protein coding regions. In total...strong linkage to the PHP.B phenotype and its expression pattern in the mouse brain.  Both labs then took...Deverman lab started by seeing how changes in LY6A’s expression affected PHP.B’s transduction rates. Knock out...still transduced by PHP.B but only if Ly6a was expressed. Additionally when AAVR knockout mice were IV ...permissive and non-permissive mouse strains. PHP.B plasmids and PHP.eB viral preps are available from Addgene...

  17. Starter guide to induced pluripotent stem cells (iPSCs) part 1:  A renaissance in regenerative medicine

    Type
    Blog Post
    Published
    Oct. 30, 2018, 1:04 p.m.
    ... Visit Our Stem Cell Page Find Plasmids for Reprogramming Find Plasmids for Differentiation ...reprogramming differentiated adult cells by the ectopic expression of four embryonic genes- OCT4, SOX2, KLF4, and...to a Nobel Prize for Dr. Yamanaka in 2012. Find plasmids for generating iPSCs iPSCs and ESCs closely resemble...possess similar morphologies, growth properties, and express stem cell markers similar to ESCs [11].  While ...Pharmacological Sciences, a Cell Press reviews journal. Stem cells are special types of cells that can...Pharmacological Sciences, a Cell Press reviews journal. She joined Cell Press to pursue a career in science...

  18. Overcoming the Challenges of Lentiviral Production

    Type
    Blog Post
    Published
    Aug. 7, 2018, 12:31 p.m.
    ... multiple plasmids. Second generation packaging systems use 3 plasmids; an envelope plasmid that usually...encodes VSV-G, a packaging plasmid containing structural genes and a transfer plasmid carrying the transfer...Rev gene from the packaging plasmid and incorporating it into a fourth plasmid. In addition, the promoter...and packaging plasmids in order to obtain the best titers. Requiring an additional plasmid for transfection... titer virus for transfer plasmids with small inserts (such as CRISPR guides) while a single 72h harvest...Resources on Addgene.org Lentiviral Guide Find lentivirus plasmids Browse all viral vectors ... a usable titer, or fine-tuning selection and expression in your target cell line, researchers often find...

  19. Reaching out to China: Canton Nucleic Acids Forum (CNAF) 2015

    Type
    Blog Post
    Published
    Dec. 1, 2015, 3:30 p.m.
    ...chemical replication of RNA in the absence of evolved enzymatic machinery (i.e. RNA replication with no proteins...involved in RNA based surveillance of repetitive gene families and provide a way to guide inheritance ...finding in the regulatory RNA field. The Rajewsky lab is studying circular RNAs (who knew…I had barely heard...stranded, covalently closed RNAs seem to be conserved in mammals, expressed in neurons, and are especially...against both DNA and RNA viruses - 2 cas systems regulate at the DNA level and 1 at the RNA level. Udi Qimron...understanding complex regulation of and by tRNAs and tRNA-derived RNAs. Stay tuned for big developments in this... discover circRNAs in RNA-seq data. As far as I can tell, we don’t really know what circRNAs do yet or...

  20. 22 Hot Plasmid Technologies from 2014

    Type
    Blog Post
    Published
    Jan. 6, 2015, 5:21 p.m.
    ...Cre-based Brainbow-expressing cells. Autobow plasmids are all-in-one versions which express self-excising ... host cells in order to optimize expression. The expression plasmids for a given species are based on ... Hot Plasmid list. Other popular plasmids & blog posts @Addgene: The 10 Most Distributed Plasmid Technologies...inducible inactivation. Find the Robinson plasmids or the Royle plasmids and get to work! Robinson et al...descriptions of various optogenetics plasmid tools, visit Addgene’s optogenetics guide. More optogenetics tools...designed the pOSIP (one-step integration plasmid) series of plasmids, vectors that convey both the sequence...Chen, pCS2-3xFLAG-NLS-SpCas9-NLS is a Cas9 expression plasmid that was used by Chen and colleagues for ...
Showing: 101 - 120 of 199 results