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  1. Viral Vectors 101: Inverted Terminal Repeats

    Type
    Blog Post
    Published
    Oct. 19, 2023, 1:15 p.m.
    ...among the most important are the inverted terminal repeats (ITRs). ITRs are the elements that make an AAV ...guide AAV Viral Preps References  Earley, L. F., Conatser, L. M., Lue, V. M., Dobbins, A. L., Li, C., Hirsch...2019). A User’s Guide to the Inverted Terminal Repeats of Adeno-Associated Virus. Hum Gene Ther Methods...the B-B’ and C-C’ regions of inverted terminal repeats reduces rAAV productivity but increases transgene...
  2. Experimenting in an Open Source lab: from CRISPR to Cats

    Type
    Blog Post
    Published
    July 23, 2015, 2:30 p.m.
    ... from that of wild cats with the goal of optimizing the health of domesticated cats and learning about...data for analysis. And, well, cats... everyone knows the internet loves cats! This is mostly a project to...
  3. Viral Vectors 101: Systemic Capsids

    Type
    Blog Post
    Published
    Oct. 12, 2023, 1:15 p.m.
    ...endothelial cells (mice, rats); CNS neurons (infant rhesus macaques) Mice, rats, rhesus macaques No ... Mice, rats No (mechanism unknown) Krolak et al., 2022 AAV.MaCPNS1 PNS (mice and rats) CNS; ...mice) PNS (rats) CNS; PNS, including ENS (adult marmosets, infant rhesus macaques) Mice, rats, marmosets... not effective in NHPs (Liguore et al., 2019; Matsuzaki et al., 2018; Huang et al., 2023). However, several... mouse strains. **AAV1-X1 has not been tested in rats. For more information on reagents and protocols,... Reference AAV-PHP.B* CNS (broad) Mice, rats Yes (LY6A) Deverman et al., 2016 Hordeaux et...for inhibitory versus excitatory neurons Mice, rats Yes (LY6A) Chan et al., 2017 Brown et al, 2021...
  4. Unique and persistent IDs for improved reproducibility: Addgene now supports RRIDs and compact identifiers for all plasmids

    Type
    Blog Post
    Published
    Nov. 20, 2018, 8:17 p.m.
    ...recommend or require authors to use specific PID formats. For example, several journals like eLife, Nature...are supported by SciCrunch. Other well known PID formats are resolvable compact identifiers, which are Compact...identifier for every plasmid. In case these PID formats are new to you, we’ll go through examples to highlight.... Despite their differences, both of these PID formats for lenti-Cas9-VQR contain the Addgene ID # and...Addgene. How to cite options using the different PID formats The instructions for how to cite any Addgene plasmid...citing with resolvable compact identifier and RRID formats. Let’s go back to our example plasmid, lenti-Cas9...happy to support the RRID and compact identifier formats. Acknowledgments Many thanks to Daniela Bourges...
  5. Five Popular Model Organisms, Part 2

    Type
    Blog Post
    Published
    Sept. 29, 2020, 1:15 p.m.
    ..., and genetic similarities with humans. However, rats have some key differences in physiology, intelligence...edge as a disease mode (Iannaccone et al., 2009). Rats are larger than mice making them more useful for...research (Ellenbroek and Youn, 2016). For these reasons rats were once the most used mammalian model in medical... perfect. One of the most limiting attributes of rats is their difficult to manipulate genome and limited... have vastly improved scientists’ ability to use rats as disease models.  Check out Addgene’s collection...nature02426 Iannaccone, P. M., & Jacob, H. J. (2009). Rats! Disease Models & Mechanisms, 2(5–6), 206–210. https...
  6. 2018 #DeckTheLab Contest Winners

    Type
    Blog Post
    Published
    Jan. 15, 2019, 2:19 p.m.
    ...parkinsonsdisease A post shared by Ladies in labcoats (@ladiesinlabcoats) on Dec 19, 2018 at 4:36am PST Buddy..., 2018 Eppi the red nosed reindeer from @ladiesinlabcoats Many teams recycled lab materials into holiday...up about sustainability in the lab!). The @ladiesinlabcoats used a pipette tip box and microcentrifuge...love your Insta!! #LILCChristmas . . #lab #ladiesinlabcoats #Christmas #labchristmas #cute #reindeer #...
  7. Simplify Cloning with in vivo Assembly

    Type
    Blog Post
    Published
    Oct. 18, 2018, 12:37 p.m.
    ... Jake Watson and Javier García-Nafría from the MRC Laboratory of Molecular Biology. Jake Watson is a postdoctoral...This post was contributed by Jake Watson and Javier García-Nafría from the MRC Laboratory of Molecular...receptor function.     Follow them on Twitter @jakefwatson and @JGarciaNafria.  References 1. Jones, Douglas...PMCID: PMC331480. 3. García-Nafría, Javier, Jake F. Watson, and Ingo H. Greger. "IVA cloning: a single-tube...
  8. Data Freedom: The Expansion of Data Sharing in Research Publications

    Type
    Blog Post
    Published
    Aug. 5, 2014, 6:51 p.m.
    ...issue of proprietary data formats. Many instruments store raw data in formats that require specific (expensive...software that evolves over time such that prior formats are no longer supported/readable. Is the author...their host institution expected to provide data in formats exported to common file types? And how long should...
  9. When Fidelity Matters: A frank discussion about ligase fidelity

    Type
    Blog Post
    Published
    March 6, 2018, 1:49 p.m.
    ...for a ligase? DNA ligases generally prefer fully Watson-Crick base-paired dsDNA substrates to those containing... base-pair size nearly indistinguishable from a Watson-Crick base pair, are joined with nearly the same...allowed screening of all possible base combinations (Watson-Crick and mismatched) around the ligation junction... (2013): 1415-1422. PubMed PMID: 23463388. 18. Hommatsu, Manami, et al. "Development of a PCR/LDR/flow-through...
  10. Build Your CRISPR Vocabulary

    Type
    Blog Post
    Published
    July 2, 2024, 1:15 p.m.
    ...Clustered Regularly Interspaced Short Palindromic Repeats. That contrast of simplicity and complexity is ... of these arrays, with alternating spacers and repeats, was the original impetus for studying CRISPR. ...array, these sequences are called protospacers. Repeats: Bacterial DNA that appears between each spacer...
  11. Multiplex Genome Editing with CRISPR-Cpf1

    Type
    Blog Post
    Published
    May 9, 2017, 2:12 p.m.
    ... et al used four oligos that consist of direct repeats and crRNA.  Similar to a jigsaw puzzle, the oligos... reverse the orientation of the crRNA’s direct repeats when expressing the Cpf1 multiplex system from ...This undoes the original reversing of the direct repeats, leading to expression of a crRNA array that can...
  12. Bacterial Toxin-antitoxin Systems as Molecular Biology Tools

    Type
    Blog Post
    Published
    Nov. 1, 2018, 12:35 p.m.
    ...This MazF-ZeoR cassette is flanked by two direct repeats which can be used for marker removal so that the...second recombination event between the two flanking repeats. In cells where recombination has not occured, ...8650219. PubMed Central PMCID: PMC39188. Kamada, Katsuhiko, Fumio Hanaoka, and Stephen K. Burley. "Crystal...
  13. Plasmids 101: Using Transposons in the Lab

    Type
    Blog Post
    Published
    July 6, 2021, 1:28 p.m.
    ...types of Class 1 TEs: those with long terminal repeats (LTRs) and those without (non-LTR TEs). LTR retrotransposons...transposase enzyme binds the transposon’s long terminal repeats (LTRs), induces a double-stranded break, and excises...generate transgenic animals, including zebrafish, mice, rats, and rabbits (Sandoval-Villegas et al., 2021).  ...
  14. Celebrating One Million Plasmids Shared!

    Type
    Blog Post
    Published
    Sept. 25, 2018, 2:39 p.m.
    ... community (check out the infographic below for stats on our plasmid deposits and requests). Over the ...on social media or around the office. @Addgene congrats for 1 million orders. @RothLabUNC accounts for...
  15. Editor's Choice, September 2016

    Type
    Blog Post
    Published
    Oct. 7, 2016, 4 p.m.
    ...summer months, but this is also our best month ever! Hats off to all of our wonderful writers and all those...Libraries Available: Pooled and Individual Plasmid Formats Better Dyeing Through Chemistry & Small Molecule...
  16. Sleeping Beauty Awakens for Genome Engineering

    Type
    Blog Post
    Published
    June 30, 2015, 2 p.m.
    ...transposon consists of a mirrored set of inverted repeats (green) flanking the gene of interest (blue) in...is expressed (red stars) and binds the inverted repeats (green); and an endonuclease reaction occurs which...
  17. Viral Vectors 101: Parts of the AAV Transfer Plasmid

    Type
    Blog Post
    Published
    Aug. 11, 2020, 1:15 p.m.
    ...terminal repeat (ITR) sequence Inverted terminal repeats (ITRs) are what makes an AAV transfer plasmid an...(2019) A User’s Guide to the Inverted Terminal Repeats of Adeno-Associated Virus. Human Gene Therapy Methods...
  18. 5 Great Apps for Lab Life

    Type
    Blog Post
    Published
    Sept. 22, 2016, 2:30 p.m.
    ...with the content we store in them: music, emails, chats, pictures, and apps. Throughout my time as a graduate...universally useful. 4. Chemical Safety Data Sheets by ThatsMyStapler Safety always comes first with research! It...
  19. Viral Vectors 101: Viral Vector Elements

    Type
    Blog Post
    Published
    July 25, 2023, 1 p.m.
    ...this promoter-gene combo are two long terminal repeats (LTRs). These LTRs define the limit of what will...constructs. Sandwiched between two inverted terminal repeats (ITRs) is the promoter and cargo, in that order...
  20. Summer SciComm: Preprints

    Type
    Blog Post
    Published
    Aug. 16, 2022, 1:15 p.m.
    ...informal settings like lab meetings, Twitter, coffee chats with potential collaborators, blogging and more....more. These each have different goals, formats, and processes, and they provide different amounts of access...
  21. Hot Plasmids February 2024

    Type
    Blog Post
    Published
    Feb. 20, 2024, 2:45 p.m.
    ...Monomeric StayGold variants By Mike Lacy In 2022, Atsushi Miyawaki and colleagues identified a highly bright...endothelial cells across diverse mice strains and rats. Figure from Chen et al (2023) under CC-BY license...
  22. Viral Vectors 101: Virus Safety

    Type
    Blog Post
    Published
    June 22, 2023, 1:15 p.m.
    ...viral handling. Gloves are always required and lab coats are either recommended or required in BSL-1 and ...require or recommend disposable gowns over your lab coats and double gloving, so that, if needed, a layer ...
  23. Magnetic Control of Proteins: More than a Dream

    Type
    Blog Post
    Published
    Sept. 24, 2024, 1:15 p.m.
    ...fluorophores (Karki et al., 2021; Lee et al., 2011; Matsuoka et al., 2023), but these effects were very small...5367–5372. https://doi.org/10.1021/nl202950h.  Matsuoka, R., Kimura, S., Miura, T., Ikoma, T., & Kusamoto...
  24. Fluorescent Proteins 101: Fluorescent Protein Timers

    Type
    Blog Post
    Published
    May 4, 2017, 2:30 p.m.
    ...pancreatic differentiation) in mouse embryos (Miyatsuka et al.) Distinguish between models for trafficking....2 (2009): 118-126. PubMed PMID: 19136976. 5. Miyatsuka, Takeshi, Zhongmei Li, and Michael S. German. ...
  25. Summer SciComm Series: Modes of Communication

    Type
    Blog Post
    Published
    July 1, 2022, 1:15 p.m.
    ... Can be distributed in digital or analog media formats. Cognitively demanding format. Equipment, expense...incorporate visuals if needed. Traditional media formats are quite competitive while digital can be oversaturated...
  26. An Introduction to Adenovirus

    Type
    Blog Post
    Published
    Oct. 3, 2023, 1:15 p.m.
    ...persistent transgene expression in certain cell types (Tatsis et al., 2007), potentially because some of the ...doi.org/10.1038/s41586-023-05949-1. PMID: 36996871. Tatsis, N., Fitzgerald, J. C., Reyes-Sandoval, A., Harris-McCoy...
  27. AAV Titers: Where Do They Come From And What Do They Mean?

    Type
    Blog Post
    Published
    Nov. 15, 2017, 3 p.m.
    ...second-order structure of the AAV genome, caused by repeats and self-complementarity of the AAV genome and ...binding sites between the primers and the AAV genome repeats. Primer annealing can be affected by the presence...
  28. Deciphering the Mysteries of Behavior with Viral Vectors

    Type
    Blog Post
    Published
    Sept. 17, 2019, 12:40 p.m.
    ...causes a shift towards antidepressant behavior in rats in the forced swim test as seen by increasing the...hippocampus evokes antidepressants-like effects in rats." Psychoneuroendocrinology 46 (2014): 78-87. PubMed...
  29. March for Science

    Type
    Blog Post
    Published
    April 21, 2017, 2:30 p.m.
    ...do identify as Democrats more often than Republicans, the March is not about Democrats or Republicans ...
  30. Plasmids 101: Biotinylation

    Type
    Blog Post
    Published
    Nov. 15, 2018, 1:50 p.m.
    ...indeed the culprit in egg white injury by feeding rats purified avidin (Kresege et al., 2004). Avidin is...de, Rodriguez, P., Bonte, E., Krijgsveld, J., Katsantoni, E., Heck, A., … Strouboulis, J. “Efficient biotinylation...
  31. Antibodies 101: Single Chain Fragment Variables (scFvs)

    Type
    Blog Post
    Published
    June 3, 2021, 1:15 p.m.
    ..., a pooled library of scFvs is displayed on the coats of bacteriophages, a process which links genotype...pooled library of scFvs that are displayed on the coats of bacteriophages. This library is incubating with...
  32. Plasmids 101: Dimers and Multimers

    Type
    Blog Post
    Published
    Jan. 10, 2023, 2:15 p.m.
    ...large inserts (>7 kb)(Berg et al., 1989), direct repeats (Ribeiro et al., 2009), and at high copy numbers...plasmid recombination mediated by 28 bp direct repeats. Mol Biotechnol. 2008 Nov;40(3):252-60. doi: 10.1007...
Showing: 1 - 40 of 155 results