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Showing: 261 - 280 of 810 results
  1. Transferable Skills Guide: Career Planning Resources

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    ...found that many researchers feel that they lack formal training in a variety of transferable skills. At...many graduate and post-doctoral programs lack any formal or mandatory professional development training....same thing? Make an effort to meet people. Attend smaller talks within the bigger conference, especially ...you should have a business card; it’s a bit more informal, and a lot easier to hand out than a CV or resume...the connection you made at the job fair when you formally apply for the position. This post on Business ...
  2. Tips for CRISPR Gene Editing in Mice

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    Blog Post
    ... has expanded since its adaptation for use in mammalian cells in 2012-2013. Researchers are now using ...Now that you’ve validated your gRNAs for use in mammalian cells, it’s time to use them in mouse embryos....method was developed as the use of CRISPR/Cas9 in mammalian cells was being explored and it allowed control...that we’ll learn much more from our favourite mammalian model organisms in the near future.  Many thanks...Design You gRNA Find CRISPR Plasmids for Use in Mammalian Cells Check out All of Our CRISPR Resources   ...
  3. Plasmids 101: E. coli Strains for Protein Expression

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    Blog Post
    ... TB or 2XYT is optimal because of the high cell-density they support; however, minimal media supplemented...with proper protein folding, and deal with sub-optimal codon usage (Table 1) A few mutations are common...contains 7 additional tRNAs for rare codons not normally used in E. coli. Expression vector cannot have...Analyze your expression conditions by setting up a small-scale expression experiment to test variables such...
  4. Data Freedom: The Expansion of Data Sharing in Research Publications

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    Blog Post
    ...had been processed since the declaration, only a small fraction (<1%) of authors have asked for advice ...Not quite. The PLOS policy on data access is a formal statement that is already practiced or required...wanted more time to mine their own data, with some smaller labs feeling that larger, better resourced, groups...behavioral geneticists may track the motion of multiple animals on different occasions via video, generating huge...scope of data to be shared to individual authors. Minimally, raw but sufficiently annotated data used to create...
  5. March for Science

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    Blog Post
    ...article are those of the author do not represent a formal stance taken by Addgene or its staff. In Washington...reality and science is how we learn about reality. Formally, a government can be defined as a social contract...into in order to protect their rights (2). Less formally, governments are the organizations that make and...often pandered to when strong or overlooked when small, but data is not going change depending on the number...article are those of the author do not represent a formal stance taken by Addgene or its staff. Many thanks...
  6. Harnessing Bacterial Toxins for Allelic Exchange

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    Blog Post
    ...There’s an astounding number of ways to create chromosomal mutations in bacteria, so many that it may be...introduced from a conjugative plasmid replaces the chromosomal copy. This is a versatile technique, and is less... with excellent efficiency using a commercial isothermal assembly master mix. Introduction of the strong...interest, from the day primers arrive, the desired chromosomal modification can be made in 5 days. Counter-selection...lambda red recombineering enables simplified chromosomal gene replacement in Escherichia coli." Appl. ...
  7. Five Popular Model Organisms, Part 2

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    Blog Post
    ...prokaryotic organism. With its fast growth rate, small size, and low cost, it’s understandable why E. coli...A close relative to the mouse, both are great mammalian models due to their size, physiology, and genetic...For these reasons rats were once the most used mammalian model in medical research with an archive of information...offspring (produces many seeds), self fertilizing, a small yet highly characterized genome, and is easily maintained... of the Brown Norway rat yields insights into mammalian evolution. Nature 428, 493–521 (2004). https:/...
  8. Transferable Skills Guide: Time Management

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    Blog Post
    ...found that many researchers feel that they lack formal training in a variety of transferable skills. At...Mangement for Scientists. Back when I used to do mammalian cell culture, I would often respond to friends...other half of each day you can spend accomplishing small tasks (like... preparing plasmids to send to Addgene...the full experiment fails, you’ll still have made small accomplishments each day that should help keep you..., the task will likely be much easier. Having a formal plan for your day will make this easier - if you...
  9. Targeting HIV-1 with CRISPR: Shock and Kill or Cut it Out?

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    Blog Post
    ...the HIV-1 genome had been excised, leaving only a small portion of the LTRs joined together. Clonal Cas9...preclinical HIV-1 research that should be pursued in animal models, and it’s difficult to tell if one approach...both cases, translating the in vitro work into an animal model comes with two key hurdles. The first is ...genomes will need to be sequenced to determine the optimal gRNAs for either “shock and kill” or viral excision...to determine if CRISPR/Cas9 escape occurs in an animal model. If these escape mutations are frequent, ...
  10. Plasmids 101: Common Lab E. coli Strains

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    Blog Post
    ...designing your plasmid – you carefully selected the optimal promoter for your gene of interest, painstakingly...coli are mainly found in the intestinal tract of animals. There are many different naturally occurring strains...arabinose as a carbon source leuB β-isopropyl malate dehydrogenase inactivated Requires exogenous leucine...is non-functional. If a gene is deleted, it is normally noted with a Greek delta (Δ).  Additional resources...of Replication The Promoter Region – Let's Go! Mammalian Vectors Looking for More Plasmids 101 Articles...
  11. Using AAV for Neuronal Tracing

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    Blog Post
    ...terminals of axons form connections to dendrites of proximal neuronal cells. In the specific example of episodic..., pressure injection or iontophoresis (applying small electric currents via inserted electrodes) may be...clearer picture of neuronal connectivity in the mammalian brain (Wickersham et al., 2007; plasmids at Addgene...Addgene’s AAV guide. AAV particles are relatively small (20 nm) in size which makes them capable of diffusing...If Cre-dependent vectors are used in transgenic animals that express Cre in only specific cell types, for... titration on the Addgene website).  Tissue Optimal Serotype CNS AAV1, AAV2, AAV4, AAV5, AAV8, ...
  12. Plasmids 101: Repressible Promoters

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    Blog Post
    ...bacterial origins, Tet systems function well in mammalian cells, and TRE-containing promoters can be used...OFF. The cumate switch system functions well in mammalian cells, and can be used in the repressible manner...previous post. While originally developed for use in mammalian cells, this system has also been implemented in...Bujard H. Tight control of gene expression in mammalian cells by tetracycline-responsive promoters. Proc...-switch: a system for regulated expression in mammalian cells. BMC Biotechnol 6, 43 (2006). https://doi.org...
  13. Hot Plasmids: Spring 2025

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    ...but it is challenging to monitor because only a small number of glutamate molecules are released in each...CMV promoter drives robust gene expression in mammalian cells. Flexible tagging: Choose untagged or add...expressing tagged proteins, and stay tuned for mammalian expression and AAV plasmid sets launching later...variety of genomic edits — single-base changes, small deletions, and large insertions up to 12 kb — with...SST), vasoactive intestinal peptide (VIP), or lysosomal-associated membrane protein 5 (LAMP5) — as well...
  14. Lentiviral CRISPR Libraries Enable Genome-Scale, Knockout Screening

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    Blog Post
    ...allow.” Wang’s library is designed to target a smaller set of genes and it includes more guides per gene...sgRNAs, and can result in a higher titer due to the smaller size of the plasmids. The Zhang lab, on the other...possible to conduct systematic genetic screens in mammalian cells,” David Sabatini, a senior author of one...). Genome-Wide Recessive Genetic Screening in Mammalian Cells with a Lentiviral CRISPR-Guide RNA Library...
  15. Selecting Your Plasmid Purification Kit

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    Blog Post
    ...Bacterial transformation protocols require such small amounts of DNA (often on the picogram scale) that...complete a cloning experiment with a relatively small amount of DNA (in the nanograms to micrograms scale...high quantity) – Depending on the experiment, mammalian cell transfections can require quite large amounts.... Aside from the more obvious swaps like using smaller bottles or recycled cardboard packaging, there ...while others have suggested modifications to their normal kit protocols.  Yeast plasmids – If you’re extracting...
  16. Plasmids 101: What is a plasmid?

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    Blog Post
    ...plasmids are small circular pieces of DNA that replicate independently from the host's chromosomal DNA. They... modify, or construct a plasmid. A plasmid is a small circular piece of DNA found in bacterial cells, ...designed to introduce foreign DNA into another cell. Minimally, lab-created plasmids have an origin of replication...
  17. Hot Plasmids September 2018 - Optogenetics, RNA Localization, Fluorescent Protein, and Base-editing Tools

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    ...cellular dynamics with light by modifying EB1. EB1 normally sits on microtubules to attract other proteins... can be used to visualize RNA localization in mammalian cells. These tools consist of cobalamin-binding...in vivo. These new “Riboglow” probes contain a smaller RNA tag, are less prone to photobleaching, and ...your own experiments, mCarmine is available in a mammalian expression vector (pcDNA3) and a bacterial expression...
  18. Viral Vectors 101: Transductions

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    ...basis of transduction Transductions utilize the ‘normal’ mechanism of viral infiltration into a cell. The...be integrated into the host genome? Expressed episomally long-term? Expressed short-term? Answering these...non-integrating (adenovirus and AAV) but can still express episomally long-term (AAV). If you perform a lipid-based...transposon system, CRISPR targeted strategy, etc.) and episomal expression will last ~2-7 days at moderate levels...
  19. Summer SciComm: Science Storytelling

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    Blog Post
    ...or other affected people, man/animal vs nature, anthropomorphized animals, or even seemingly unrelated ...Summer SciComm Series! We hope you've enjoyed this small glimpse into the world of science communication ...these pieces aren't always appropriate for your formal scientific communications, they are fantastic fodder...
Showing: 261 - 280 of 810 results