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We narrowed to 621 results for: cat.1

Showing: 41 - 60 of 621 results
  1. Live and Let Dye: Self-Labeling Protein Tags

    Type
    Blog Post
    Published
    April 16, 2024, 1:15 p.m.
    ...imaging of intracellular targets. Nature Communications, 7(1), Article 1. https://doi.org/10.1038/ncomms10778...by modular envelope design. Nature Communications, 14(1), Article 1. https://doi.org/10.1038/s41467-023...formin and capping protein. Nature Communications, 14(1), Article 1. https://doi.org/10.1038/s41467-023...small molecules in vivo. Nature Biotechnology, 21(1), 1. https://doi.org/10.1038/nbt765  Lavis, L. (2016...Few Complicated Non-natural amino acids 1 Various Many Complicated   Applications Organic...fluorescent proteins, opening up new applications.   Figure 1: Live-cell labeling strategies. The...up linked to whatever molecule you choose (Figure 1). Just express the fusion protein and add a specific...
  2. Important Considerations When Using AAVs

    Type
    Blog Post
    Published
    June 13, 2017, 2:30 p.m.
    ...Viral Vector Blog Posts from Addgene 1. Location, location, location! What do buying real estate and using...important factors related to location. Location (1): What tissue? Location (2): Where in the tissue/which...vectors without specific facilities (Biosafety Level-1). Other possible tools, lentiviruses for example, ...suspected cases of insertional mutagenesis in humans (1) and AAVs are non-enveloped viruses, so they are resistant...the right serotype? Keep asking questions!  Table 1: AAV Serotypes and Tropism Experiment  Detection...the vicinity of the injection. Examining serotypes 1, 8 and 9, not only do they undergo retrograde and ...types of research may be enabled by the use of AAVs? 1) Combined functional and anatomical mapping of circuits...
  3. Harnessing TnpB for Genome Editing: A Compact and Versatile Tool for Your Research

    Type
    Blog Post
    Published
    July 29, 2025, 1:15 p.m.
    ... Oligos Oligo 1: Add 'tcaa' to the 5′ end of your forward guide sequence (see Figure 1). Oligo 2: Add... Figure 1). Perform standard phosphorylation and annealing of the two oligos. Figure 1: Components... promoter for ωRNA (reRNA) expression (see Figure 1). Both plasmids contain a hygromycin resistance gene...provide a step-by-step guide for using a Dra2TnpB. Step 1: Design the 20-nt Guide Sequence Identify a TAM site...protocols (pp. 245–260). https://doi.org/10.1007/978-1-0716-4358-7_20  Karmakar, S., Panda, D., Panda, S... induction of meristems. Nature Biotechnology, 38(1), 84–89. https://doi.org/10.1038/s41587-019-0337-2...1166–1187. https://doi.org/10.1038/s41477-021-00991-1  Qiao, J., Zang, Y., Gao, Q., Liu, S., Zhang, X.,...
  4. Antibody Validation for Flow Cytometry

    Type
    Blog Post
    Published
    Sept. 10, 2024, 1:15 p.m.
    ...dye, respectively. WT and KO cells were mixed in a 1:1 ratio and fixed in 4% PFA and permeabilized in 0.1%...antibodies were diluted to 1 µg/mL except for 14558, which was used at 0.35 µg/mL (1/100). * = monoclonal antibody...through their HLDA workshops. Let’s use TIM-1 (Single pass type-1 membrane protein), which has been designated.... 400,000 cells were stained with the indicated Synaptotagmin-1 antibodies and corresponding Multi-rAb...specific antibody:target combination of interest (Figure 1). It can therefore be helpful to try all three when...to label an intracellular target.   Figure 1: HCT 116 WT and SYT1 KO cells were labelled with a...between the wild-type and the KO population (Figure 1), further optimization can be performed to both maximize...
  5. Lentiviral Vector Uses and Overview

    Type
    Blog Post
    Published
    May 19, 2016, 2:30 p.m.
    ...HIV-1 were transduced with a lentiviral vector containing an antisense sequence against the HIV-1 envelope...Trono and collaborators turned to the lentivirus HIV-1, well-known to infect non-dividing cells. The first...plasmids. The packaging plasmid carried a mutated HIV-1 provirus that couldn’t package itself due to a few...plasmid encoded the desired transgene flanked by HIV-1 long terminal repeats (LTRs) that facilitate viral... targeting and tracing cells in the brain (Figure 1). 2nd generation lentiviral packaging system The graphic...infectivity, is often used as a substitute for HIV-1 Env, which can only infect CD4+ cells. 3rd generation...lentivirus in the comments section below! References 1. In vivo gene delivery and stable transduction of ...
  6. X-CHIME: Context Dependent Germline Knockout in Immune Cells

    Type
    Blog Post
    Published
    Jan. 16, 2024, 6:13 p.m.
    ...in the immune system. Nature Immunology, 25(1), Article 1. https://doi.org/10.1038/s41590-023-01689-6 ...screening of genes in the immune system. Nature Communications, 10(1), 1668. https://doi.org/10.1038/s41467-019... strains and lentiviral expression vectors (Table 1). The four systems Name Function Plasmid ... GFP (vex) Rosa26-FlpO-ERT2; H11-Cas9 Table 1: X-CHIME systems Proof of Concept These systems were...was lethal (LaFleur et al., 2024).   Figure 1: Schematic showing the X-CHIME approach. Figure from...
  7. Degrading DNA with Cascade-Cas3

    Type
    Blog Post
    Published
    Feb. 11, 2025, 2:15 p.m.
    ...Cascade's complexity. Figure 1: Schematic of Class 1 CRISPR types. Class 1 includes type I with a Cas3 ...up type I, the most abundant type in the Class 1 category. These type Is can then be further broken into...unidirectional genome editing in human cells. Nature Communications, 10(1). https://doi.org/10.1038/s41467-019-13226...collection! A "complex" system Cas3 is part of the Class 1 CRISPR family, which means it requires multiple Cas...the brunt of the mechanical work for editing. Class 1 CRISPR systems make up the majority of CRISPR-based...CRISPR-based immune systems in bacteria and archaea. Class 1 is further broken down into different types, with ...antiviral defense). Cascade is brought to the target location using a gRNA and can then recruit Cas3, which ...
  8. Viral Vectors 101: The Retroviral Lifecycle

    Type
    Blog Post
    Published
    July 27, 2023, 1:15 p.m.
    ...can use Figure 1 to compare the genomes of these two family members.   Figure 1: Gamma-retrovirus...Retroviruses” is an umbrella term which encompasses 1.) the gamma-retroviruses — that have been developed...of retroviruses called the lentiviruses (like HIV-1) — that have been developed into lentiviral vectors...Academy of Sciences of the United States of America, 54(1), 137–144. https://doi.org/10.1073/PNAS.54.1.137. ...1997). Functional RT and IN incorporated into HIV-1 particles independently of the Gag/Pol precursor protein...RNA as template. Journal of Molecular Biology, 79(1), 163–183. https://doi.org/10.1016/0022-2836(73)90277...Aids Full-Length Human Immunodeficiency Virus Type 1 DNA Synthesis. Journal of Virology, 82(5), 2376. https...
  9. The Breast Cancer Microenvironment: A Tumor’s Backstage Team

    Type
    Blog Post
    Published
    Jan. 31, 2019, 1:32 p.m.
    ...enzyme (among others): caveolin 1, also known as CAV 1. Usually, caveolin 1 promotes the cell life cycle ...caveolin 1, there’s less malignancy because there’s less proliferation. However, the lack of caveolin 1 in ...believes that miRNA may decrease the expression of TAK 1, an enzyme that controls apoptosis and regulates transcription...Agnieszka K., et al. "An absence of stromal caveolin-1 expression predicts early tumor recurrence and poor... these stromal cell modifications, stromal cells are also constantly communicating with a tumor, proving... was contributed by Bárbara Pinho, a science communicator at the Portuguese science museum "Fábrica Centro...Proficient in transportation, exosomes are tools of communication and provide malignancy to the microenvironment...
  10. Mouse Modeling, Part 2: Breeding and Crossing Mice

    Type
    Blog Post
    Published
    Aug. 6, 2019, 12:55 p.m.
    ...approximately 1 in 16 mice that harbor homozygous alleles at both of your genes of interest. About 1 in 4 mice...inheritance: 1. Genotype your parental mice In order to ensure that your genetic modification will be passed...In Part 1 of our mouse modeling blog series, we covered techniques that can be used to introduce genetic...mice in your experiment. As you’ve learned in Part 1, there are many types of genetically engineered mice...example of mice that are derived from crosses. In Part 1, we explained how genetic recombination in mice expressing...expressed, or inducible (this is explained more in Part 1 of this series). In any case, Cre is a dominant phenotype...genetic modifications into mouse embryos. But once you generate a growing colony of genetically engineered...
  11. When is a Monomer not a Monomer? The Top Three Ways Your Favorite Fluorescent Protein Oligomerizes in Cells

    Type
    Blog Post
    Published
    April 19, 2016, 2:30 p.m.
    ...Figure 1).   Figure 1: Each problem with dimerizing fluorescent proteins is illustrated. 1) Membrane... in nature are prone to dimerization (i.e. EGFP) [1, 2] or even form obligate tetramers (i.e. DsRed) [...active state due to closure by FP dimerization.   1. Transmembrane fluorescent protein fusions Transmembrane...bright, non-physiological, and difficult to ignore [1, 2]. 2. Fusion to an obligate dimer or oligomer Several... For a more detailed discussion see [5]. Problems 1 and 2 depend on protein concentrations. An imperfect... distance runner, gardner, and cook.   References 1. Snapp, E.L., et al., Formation of stacked ER cisternae...problem for fusion proteins. One of the major applications of FPs is to visualize the localization, dynamics...
  12. Viral Vectors 101: Integrase-Deficient Lentiviral Vectors

    Type
    Blog Post
    Published
    May 13, 2025, 1:15 p.m.
    ...and no viral progeny are produced (Figure 1).  Figure 1: Comparison of the life cycle of a lentiviral...2004). HIV-1 gene expression: lessons from provirus and non-integrated DNA. Retrovirology, 1, 13. https... cannot integrate it into the host genome (Figure 1). IDLVs were first discovered by researchers investigating...you might choose an IDLV over a lentiviral vector: 1. No risk of insertional mutagenesis Lentiviral vectors..., H. E. (1996). Human immunodeficiency virus type 1 integrase mutants retain in vitro integrase activity...Berry, C., Ecker, J. R., & Bushman, F. (2002). HIV-1 integration in the human genome favors active genes...https://doi.org/10.1186/1742-4690-1-13. PubMed PMID: 15219234 PubMed Central PMCID: PMC449739 Yew, C.T., ...
  13. Plasmids 101: Expressing shRNAs for RNA Interference

    Type
    Blog Post
    Published
    June 17, 2025, 1:15 p.m.
    ...vectors. BMC Biotechnology, 6(1). https://doi.org/10.1186/1472-6750-6-1 O’Brien, J., Hayder, H., Zayed...endogenous miRNA machinery for processing (Figure 1). The shRNA sequence is transcribed to produce hairpin... recruits other silencing proteins. Figure 1: Comparison of shRNA and miRNA processing and silencing...,"rgb":"rgb(0, 82, 169)","rgba":"rgba(0, 82, 169, 1)"},"button_font":{"size":19,"styles":{"font-family...:"rgb(255, 255, 255)","rgba":"rgba(255, 255, 255, 1)"}}{% endraw %}{% end_module_attribute %}{% module_attribute...RNA-induced silencing complex. Molecular Cell, 82(1), 30–43. https://doi.org/10.1016/j.molcel.2021.11.026...progress in miRNA biogenesis and decay. RNA Biology, 21(1), 36–43. https://doi.org/10.1080/15476286.2023.2288741...
  14. Addgene Depositors Get More Citations

    Type
    Blog Post
    Published
    April 20, 2017, 2:30 p.m.
    ...the journal of publication. Table 1 provides an example calculation of the weights. Table 1: Journal Weighting...amassed nearly 2,400 citations in its first four years (1). In addition to publishing in Science, Professor ...papers without plasmids deposited with Addgene (Figure 1). Even aggregated this much, you can see the 2013...(F) Weight (=F/E) (G) Weighted Citations (=C*G) 1 2010 3 Nature  3.3% 10.5%   3.2  9.6 2 2010...website at: http://www.neil-t.com/ .   References 1. Cong, Le, et al. "Multiplex genome engineering using...databases available, Web of Science. For each publication, Web of Science provides basic bibliographic ...Science, PLOS One, and PNAS. We then broke the publications from these journals into two groups: those containing...
  15. CRISPR-based Genome Editing Systems For Editing in E. coli

    Type
    Blog Post
    Published
    April 13, 2021, 1:15 p.m.
    ... Then plasmids are cured from the cell. Steps 1-1 and 1-2 can be done simultaneously. Image from Li et...coli K-12 strains, 2 E. coli B strains, 1 E. coli W strain, and 1 Tatumella citrea, with a total of 70 sites... update the pCas/pTargetF system.   Figure 1: The editing process begins with the addition of the...updates involved the following changes. In pCas9, we 1) replaced the promoter of gRNA-pMB1 with PrhaB, 2)...biosynthesis, we constructed a strain library with 1-11 copies of integrated genes. We obtained a stable...far, we’ve used the MUCICAT system in two ways: In our initial paper, we used MUCICAT to optimize the gene...industrial strain. Not only is MUCICAT better, it is faster. Using MUCICAT only needs 2 newly constructed...
  16. New Neuroscience Tool: The iGluSnFR3 Glutamate Sensor

    Type
    Blog Post
    Published
    April 7, 2022, 1:15 p.m.
    ...sensing glutamate using both 1-photon and 2-photon imaging.   Figure 1: 1P and 2P excitation and ...hSynap: Human Synapsin-1 promoter. Good for neuronal expression. hSynap-FLEX: Synapsin-1 promoter, FLEXed for... v857. Image adapted from Aggarwal et al., Figure 1   Increased versatility through two different...expression in Cre-expressing cells. hSynap-FLP: Synapsin-1 promoter, FLP-dependent expression GFAP: Glial fibrillary...Glutamate plays a variety of roles in synaptic communication and can trigger other forms of neuronal signaling...SF-Venus-iGluSnFR). iGluSnFR3: Improved Glutamate Indicators for Synaptic Imaging However, the first two generations... 30377363 Aggarwal, Abhi, et al. . “Glutamate indicators with improved activation kinetics and localiation...
  17. CRISPR-mediated Plant Base Editors

    Type
    Blog Post
    Published
    Jan. 3, 2019, 1:35 p.m.
    ...excision repair mediated by uracil glycosylase (Figure 1). The presence of a uracil glycosylase inhibitor (...generation of the desired T-A base pair. Figure 1: Transition mutation (C>T, G>A, A>G, and T>C) installation... A-T base pair is converted to a G-C pair (Figure 1). As the cellular inosine excision repair is not as...Target-AID based (CBE-2)-  and rAPOBEC based (CBE-1)-  CBEs are successful base editors in rice, tomato...deaminase can edit in a stretched window ranging from 1-17 bp relative to the PAM sequence (Zong et al., 2018...which recognize PAM sequences other than NGG (Table-1). Type Nickase Cas9 (D10A) Deaminase PAM requirements...locus/loci, choose a base editor variant from Table 1 depending on the PAM sequence. Avoid targeting a ‘...
  18. A Modular, Synthetic Origin of Replication

    Type
    Blog Post
    Published
    April 14, 2026, 1:14 p.m.
    ...instead of the experiment. Figure 1: Simplified schematic of SynORI. A modular, synthetic...address this, we created a synthetic origin of replication (ORI) that allows us to modify the plasmid instead...paper, we rebuilt the classic pMB1 origin of replication into a modular, programmable origin we call SynORI...SynORI uses synthetic RNA regulators to control replication. Additionally, we refactored the natural system...regulation from ColE1 family, it still contains a truncated RNA primer that may interact with the antisense...on the Addgene blog Plasmids 101: Origin of Replication Plasmids 101: Plasmid Incompatibility Plasmids...addgene.org Watch our video on the Origin of Replication Read our Plasmids 101 ebook Get practical molecular...
  19. An Integrin Antibody Toolkit from IPI

    Type
    Blog Post
    Published
    March 28, 2024, 1:15 p.m.
    ...-Integrin alpha 5 beta 1 [IPI-ITGA5/ITGB1.2] Integrin alpha-5,Integrin beta-1 Human, Mouse IgG1 Rabbit...-Integrin alpha 5 beta 1 [IPI-ITGA5/ITGB1.4] Integrin alpha-5,Integrin beta-1 Human, Mouse IgG1 Rabbit...subtype-specific β1 integrin mechanics. Nature Communications, 13(1), 7471. https://doi.org/10.1038/s41467-022...specific integrins in cellular processes.   Figure 1: Integrins can shape into three conformations: (A)...immunoprecipitation and immunohistochemistry. Table 1: IPI antibodies  Antibody Target Proteins Reactivity...Human IgG1 Rabbit Anti-Integrin alpha M [IPI-LM2/1] Integrin alpha-M Human IgG1 Rabbit Anti-Integrin...Human IgG2a Mouse Anti-Integrin alpha M [IPI-LM2/1] Integrin alpha-M Human IgG2a Mouse Anti-Integrin...
  20. Hot Plasmids February 2024

    Type
    Blog Post
    Published
    Feb. 20, 2024, 2:45 p.m.
    ...Biotechnology, 10.1038/s41587-023-01756-1. https://doi.org/10.1038/s41587-023-01756-1. PMID: 37095348. Breaking...molecular fusion and membrane-targeting applications. Nature Methods, 1–9. https://doi.org/10.1038/s41592-023...rodents and broad tropism in primates. Nature Communications, 14(1), 3345. https://doi.org/10.1038/s41467-023...incubation, even with multiplexed guides. Figure 1: A) Cell-penetrating Cas9, fused to HIV TAT, Myc and...expressing COX8a-mStayGold. Scale bars 10 μm (main), 1 μm (inset). Image reused from Ando et al. 2023, under...StayGold fluorescent protein. Nature Biotechnology, 1–4. https://doi.org/10.1038/s41587-023-02018-w. PMID..., its dimeric nature can interfere with some applications. Several labs have been working to produce monomeric...
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