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Showing: 421 - 440 of 796 results
  1. Hot Plasmids and Viral Preps - March 2021

    Type
    Blog Post
    Published
    March 23, 2021, 1:15 p.m.
    ...editing assemblies are sensor-actuators, either transcriptional regulators or chromatin-modifying enzymes. ...cell surface. When the cells interact, GFP is transferred to the receiver cell, and the receiver cell turns...et al., 2021.   The AID system relies on a transport inhibitor response 1 (TIR1) expressed under a ...These libraries encode target sites flanked by randomized nucleotides in place of a protospacer adjacent.... Check out the new additions.  Image calcium transients in PV interneurons with AAV-S5E2-GCaMP6f, now...
  2. Hot Plasmids and Viral Preps - January 2021

    Type
    Blog Post
    Published
    Jan. 5, 2021, 2:15 p.m.
    ...including excision or insertion, inversion, translocation or cassette exchange. By utilizing recombinases...delivery constraints and scientists seeking a wider range of targetable genomic sequences could benefit from...spatially and temporally target single cells. Now, Francois St-Pierre’s lab developed a new form of FACS-based...-based Dual-fluorescent DSB Repair) is a double-strand break repair assay for mammalian cells. It's based...deposited by Leopold Parts. This library delivers 2 randomly paired guides per construct and allows a reduced...
  3. Getting Started with Behavioral Neuroscience: Standardizing Experiments and Using Viral Vectors

    Type
    Blog Post
    Published
    Aug. 20, 2019, 12:31 p.m.
    ... linked to a certain behavior. It is a very old branch of science, dating back several hundred years, ...genes. A popular method uses Cre recombinase on transgenic flox animals to introduce modifications at the...Timing: High expression levels of the viral vector trangenes typically occur two weeks after injection. Therefore... after several weeks which may also depend on transgene or promoter choice. Behaviors you can study using...Stoica L, Ahmed SS, Gao G, Sena-Esteves M. Gene transfer to the CNS using recombinant adeno-associated ...
  4. Viral Vectors 101: Virus Safety

    Type
    Blog Post
    Published
    June 22, 2023, 1:15 p.m.
    ...looks like the genetic cargo in one plasmid (the transfer plasmid), the envelope (Env) gene on a separate... plasmid). Viral production then proceeds by transfection of all three plasmids into a producer cell line...HEK-293T, production of viral particles, and transduction of a target cell line with those particles. ...Env, Gag, and Pol genes are not encoded in the transfer plasmid, the component that physically integrates...without endangering yourself or others. Happy transducing! Resources Resources on Addgene.org Addgene...
  5. Quickest Way to Deposit Plasmids: The Deposit Spreadsheet

    Type
    Blog Post
    Published
    March 8, 2017, 3:15 p.m.
    ...easy — our tech transfer team will communicate with your organization’s technology transfer office or other... Send plasmid information to Addgene Material Transfer Agreement (MTA) approval  Send plasmids to Addgene...require that you send your samples to Addgene pre-transformed in this strain. Hazardous If the plasmid...samples to Addgene and contact your technology transfer office about the MTA. Pro Tip! Download a new...
  6. Cpf1 Update: Comparison to Cas9 and NgAgo

    Type
    Blog Post
    Published
    July 14, 2016, 2:30 p.m.
    ...pattern opens up the possibility of directional gene transfer, analogous to traditional restriction enzyme cloning... cloning. Sticky-end mediated gene transfer would be particularly helpful for targeting non-dividing cells...gene delivery due to their low immunogenicity and range of serotypes allowing preferential infection of ... yet characterized the potential “sticky end” transgene insertion mediated by Cpf1-generated overhangs...Alkhnbashi OS, Costa F, Shah SA, Saunders SJ, Barrangou R, Brouns SJ, Charpentier E, Haft DH, Horvath ...
  7. Plasmids 101: FLEx Vectors

    Type
    Blog Post
    Published
    April 28, 2016, 2:30 p.m.
    ...sites directs the Cre recombinase to invert, translocate, or excise a DNA fragment. The availability of...infected and would have the potential to express the transduced reporter gene. Generating a FLEx switch to control...level in the mouse. 2003 PubMed PMID: 12665802. 2. Branda, CS and Dymecki, SM. Talking about a Revolution...Channelrhodopsin-2 to multiple cell types for imaging and long-range circuit mapping. PubMed PMID: 18614669. PubMed Central...adeno-associated viruses for Cre activated and inactivated transgene expression in neurons.  PubMed PMID: 2286602. ...
  8. Common Injection Routes in Mice

    Type
    Blog Post
    Published
    Jan. 22, 2025, 9:42 p.m.
    ... 0.07 ml Skill required: advanced Intranasal instillation Intranasal instillation is very similar to its...behind the eye. IV injections are used for a broad range of substances, as it circulate what is injected ...target the lungs. The main differences are that intranasal is easier, less invasive, and only requires a...Anesthesia Trachea 20–23 (tubing) < 0.07 mL Advanced Intranasal Anesthesia Nose n/a < 0.05 mL Beginner Oral...
  9. Twenty Years of Addgene Sharing: CRISPR

    Type
    Blog Post
    Published
    April 18, 2024, 1:15 p.m.
    ...generate a classic double-stranded break, while modulators regulate transcription and chimeric efforts make...Countries shown are the top 10 requesting countries. FR=France; KR=South Korea; CH=Switzerland; AU=Australia.  ...Pyhtila et al., 2023). Our thanks to Rodolphe Barrangou for his authorial contributions to, and support...References Pyhtila, B., Kasowitz, S., Leeson, R., & Barrangou, R. (2023). The Expanding Dissemination and Distribution...
  10. 10 Basic tips for mammalian cell culture

    Type
    Blog Post
    Published
    July 12, 2018, 1:09 p.m.
    ... are sensitive to pH. Anything between orange and light orange usually indicates that the cells have grown...culture media contain the pH indicator phenol red (pH range 6.0 (yellow) - 8.0 (red)). Blood pH normally lies...too young and should not be used for important transfection experiments right after they’ve been thawed.... spent organizing, an hour is earned (Benjamin Franklin)! It’s good practice to label your plates and/...
  11. Interview: Nicola Patron on Plant Synthetic Biology, MoClo, and More

    Type
    Blog Post
    Published
    June 12, 2014, 3:30 p.m.
    ... work has always been focused on gene transfer, from transgenes to plants, chloroplast to the nucleus,...to expand the toolkit. We have included a wider range of terminators than are commonly used as we have...well in plants and give similar stability to transcripts as the ones that people use all the time. Now...Plant SynBio Reading: Quick, Versatile Plant Transgenesis with GreenGate Plasmids  ...
  12. Better Dyeing Through Chemistry & Small Molecule Fluorophores

    Type
    Blog Post
    Published
    Sept. 8, 2016, 2:30 p.m.
    ...requires more photons. For example, moving from transient overexpression of protein fusions to gene-edited... lipoic acid ligase, biotin ligase, phosphopantetheinyltransferase) – These enzymes catalyze the covalent... tag (Figure 1c). Click chemistry (e.g., transcyclooctene–tetrazine)– Nonnatural amino acids can be ...improved brightness, photostability, and spectral range. Nevertheless, these fluorophores were designed ...analogs without sacrificing their small size and membrane permeability (Figure 2c). These cell-permeable...
  13. Career Insights: Technical Support Specialist

    Type
    Blog Post
    Published
    Nov. 9, 2017, 2 p.m.
    ...high-impact journals, and the requirement for a high grant success rate. At this point, candidates are highly...requirements (and maybe also the proposed salary range) should help. In smaller companies, technical support... The benefit is that these skills are highly transferable and will help you enter other roles in project...departments such as research and manufacturing, quality assurance, product management, marketing, and sales (to ...drive to help others. These roles offer an easy transition from an academic lab to industry without being...
  14. An Inside Look into Addgene's Dev Team

    Type
    Blog Post
    Published
    Jan. 23, 2020, 2:45 p.m.
    ...to be translated into Modern Greek to be easily accessible today. Roughly speaking, we translated our software...see these improvements, you are benefited with reassurance your plasmids will not get lost in a freezer ...Another advantage of Scrum is that it provides transparency to everyone involved about the status of each...accelerating research and discovery. We work with transparency, gladly share our knowledge, and love to collaborate...
  15. New CRISPR Tools: Cas7-11 and PASTE

    Type
    Blog Post
    Published
    Feb. 17, 2022, 2 p.m.
    ...PRIME, PASTE relies on single-stranded nicks instead of the double-stranded breaks used in other insertion...target. In addition, when they looked at the transformed E. coli expressing Cas7-11, they found no evidence...broadly similar to shRNA and Cas13 systems in a range of mammalian cell lines. However, in those same ... of landing sites via Cas9-directed reverse transcriptases, followed bylanding site recognition and integration...
  16. Antibiotic Resistance: An Old Solution but a New Problem

    Type
    Blog Post
    Published
    Nov. 10, 2016, 3:30 p.m.
    ...methods of ‘horizontal gene transfer’. Resistance can also arise from random mutations in the genetic sequence...didn’t develop, either through random mutation or horizontal gene transfer, means to defend themselves from...bacterium sharing genes with another, an accidental transmission of genes from one bacterium to another through...
  17. Tips for CRISPR Gene Editing in Mice

    Type
    Blog Post
    Published
    June 28, 2016, 10:59 a.m.
    ...best gRNA Figure 1: Validation of double strand break (DSB) mediated homology dependent repair ...repair (HR, homologous recombination; SSA, single strand annealing) took place and reconstituted the EGFP...site. (c) The pCAG-EGxxFP target plasmid was co-transfected with pX330 plasmids containing sgRNA sequences...efficacy of your gRNAs is then a simple matter of transfecting HEK293T cells with your modified pCAG-EGXXFP...fluorescence, the better that gRNA is at causing a double stranded break at the target site, allowing the two halves...
  18. Important Considerations in Optogenetics Behavioral Experiments

    Type
    Blog Post
    Published
    Oct. 1, 2015, 2:30 p.m.
    ...examples I’m personally interested in include: intracranial self-stimulation (ICSS) and place preference...(viral expression, efficiency of laser light transmission to the target neurons, appropriate stimulation...optogenetics is performed in this species. However, transgenic rat technology is improving and may one day reach... reach the sophistication of mouse transgenics. Everything that has been described is intended for the...References 1. Stuber, Garret D., et al. "Excitatory transmission from the amygdala to nucleus accumbens facilitates...
  19. Data Freedom: The Expansion of Data Sharing in Research Publications

    Type
    Blog Post
    Published
    Aug. 5, 2014, 6:51 p.m.
    ...supporting datasets must be logically annotated and arranged, as in an actual publication and not require interaction...responsible for storage.  If datasets are too large to transfer to a journal repository, they are likely too large...albeit unintentional, tendency to work against transparency. This opens science to charges of elitism and...opportunities for research as well as increasing transparency. Thank you to our guest blogger! Jim Woodgett...Will Pay for Public Access to Research Data? - by Francine Berman and Vint Cerf (Science, August 2013) PLOS...
  20. Antibodies 101: Introduction to Gating in Flow Cytometry

    Type
    Blog Post
    Published
    April 4, 2024, 1:15 p.m.
    ...software in order to generate signals in a reasonable range. If colleagues in your group already have experience...experimentally-specific gates. Two-dimensional staining (quadrant gating) For our last example plot, I will show...cells (CD8+) from dendritic cells (CD11b+) using a quadrant gate. Within my “lymphocyte + single cell + live... two stains in relation to each other. Using a quadrant gate, I can divide my cell population into DN,...for each stain respectively). (B) Instead of a quadrant gate, I am free to use multiple individual gates...
Showing: 421 - 440 of 796 results