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  1. All in a Twist: dsRNA

    Type
    Blog Post
    Published
    Feb. 2, 2023, 2:15 p.m.
    ... disease, and much more! Resources and References References Wang, I. X., Grunseich, C., Fox, J., et ...replication process within the host. dsRNA viruses are inherently double stranded, while ssRNA viruses can generate... dsDNA viruses yield dsRNA through a slightly different mechanism thought to be associated with bidirectional...transcription, RNA is synthesized from a DNA template, inherently generating RNA:DNA intermediates in the process...blog CRISPR 101: RNA Editing with Cas13  RNA Interference in Plant Biology  ...
  2. Antibodies 101: Fab Fragments

    Type
    Blog Post
    Published
    Sept. 5, 2024, 1:15 p.m.
    ... for your specific scenario.    References and resources References Bates A, Power CA (2019) David vs...Constant domain. H = Heavy chain. Created with biorender.com     The modularity of antibodies means ...is relatively easy to physically divide up the different regions, both through genetic and proteolytic ...broken up, there are a few commonly available different fragments that retain antigen binding (Figure ...common antigen binding fragments. Created with biorender.com.   Why Fabs?  Antibody fragments have a ...
  3. Antibodies 101: Conjugation

    Type
    Blog Post
    Published
    March 26, 2024, 1:15 p.m.
    ...good base from which to dive deeper!References and resources References Bendall SC, Nolan GP, Roederer M,...love FPbase’s Spectra Viewer tool for comparing different fluorophores. We also touched on fluorophores ...chemical coupling can be achieved through several different mechanisms. Most take advantage of chemical groups...interactions with other peptides. Created with BioRender.com.     Many biologists can lead perfectly ...PK (2012) A deep profiler’s guide to cytometry. Trends Immunol 33:323–332. https://doi.org/10.1016/j.it...
  4. CRISPR 101: Cas9 vs. The Other Cas(s)

    Type
    Blog Post
    Published
    Dec. 8, 2022, 2:15 p.m.
    ... put your experiments Nsync.   References and resources   References Dolan, E., Wang, Hou, Zhonggang,...while also highlighting their similarities and differences to Cas9. DNA targeting Cas enzymes Cas9 – The...Originally classified as Cpf1, Cas12’s primary difference from Cas9 is that it generates staggered breaks...(RNA knockdown, RNA editing, etc.). The main differences between Cas7-11 and Cas13 are 1). non-specific... Cas While Cas9 may be the most adaptable Cas currently available, the other Cas proteins should not be...
  5. CRISPR Meets Synthetic Biology: A Conversation with MIT’s Christopher Voigt

    Type
    Blog Post
    Published
    April 22, 2015, 2:06 p.m.
    ... to what’s happening at different points within the wood. There are different types of cellulose fibers...number of DNA binding proteins with Cas9 guided by different promoters. The challenge in building genetic circuits...then you’d need the ability to turn on genes at different times. It requires more complex synthetic networks...circuits, they are extremely orthogonal. It’s a different perspective and you can layer them for more complicated...for multi-input CRISPR/Cas9 genetic circuits References: Nielsen AA, Voigt CA. Multi-input CRISPR/Cas...
  6. Adenoviral Vector Production and Troubleshooting

    Type
    Blog Post
    Published
    June 14, 2018, 11:44 a.m.
    ...for production of Gutless AdV can be found in reference 3. Production, amplification, and quality control...please see Addgene’s Adenoviral Guide webpage, and references 1, 2.*Pro-Tip*: once the correct recombinant ...specific for a viral DNA sequence. *Pro-Tip*: Ad5 reference material should be used as an internal control..., high-titer rAdV in your experiment. Enjoy! References 1. Luo, Jinyong, et al. "A protocol for rapid...practical guide for using the AdEasy System. 3. Jager, Lorenz, et al. "A rapid protocol for construction and ...  Karen Guerin...
  7. Rabies and Neuronal Tracing

    Type
    Blog Post
    Published
    May 29, 2018, 1:51 p.m.
    ...forms of these viruses typically used in research aren’t able to replicate, and for a virus to cross a synapse...Watabe-Uchida et al., 2012). They could also quantify the strength of the inputs by counting the monosynaptic inputs...more inputs than was previously thought. The differences in the inputs to each of the two populations ...populations could be used to explain the differences in the functions of these two neuronal populations. Overall...Overall, this study laid the foundation for how different anatomical regions of the brain receive inputs and...complex questions of how the brain operates. References 1. Callaway EM. Transneuronal Circuit Tracing...
  8. Hot Plasmids - October 2020

    Type
    Blog Post
    Published
    Oct. 13, 2020, 1:15 p.m.
    ...number, generally very small, and can contain different neurotransmitters. Using genetically encoded fluorescent... brain.  Figure 1:Schematic diagram of different FingR constructs and experimental results. Image... of the cell. By combining vectors expressing different fluorescent proteins targeting inhibitory or excitatory...The team validated this tool by targeting six different genes whose protein products have distinct localizations...Figure 2: Split-wrmScarlet labeling proteins with different subcellular locations. Image from Goudeau et al...consistently predicted the cell cycle speed across these different cell types. In one example, H2B-FT was expressed...
  9. Plasmids for Endogenous Gene Tagging in Human Cells

    Type
    Blog Post
    Published
    April 6, 2017, 1:02 p.m.
    ...portal. The plasmids should be functional in many different human cell types, and while most of the genes ...protein from the untagged allele. Created with BioRender.com. The first step in creating the plasmids...GFP tag sequence to be inserted. Created with BioRender.com. A key feature of our methodology is the...enable us to effectively utilize the host cell’s inherent homology directed repair (HDR) process following...break and introducing the tag. Created with BioRender.com. Plasmids, plasmids everywhere To find out...Allen Institute website at alleninstitute.org. References 1. Roberts, Brock, et al. "Systematic gene tagging...
  10. Viral Vectors 101: Chemogenetics

    Type
    Blog Post
    Published
    July 11, 2023, 1:15 p.m.
    ... and some, such as varenicline, are already approved for clinical use. Varenicline has been further modified...updated by Jason Nasse in July 2023.  References and Resources References Chen X, Choo H, Huang X-P, Yang X...to consider that the same receptor can elicit different responses depending on what cell type it is expressed... signaling. The two main classes of receptors currently used in chemogenetics are DREADDs and PSAMs. ...
  11. Story of a SynBio Startup: RevBio's Epiphany (or Lack Thereof)

    Type
    Blog Post
    Published
    June 5, 2014, 3:32 p.m.
    ...order to head to Ireland and take a chance as entrepreneurs. To make things more interesting, we are working...academic labs. Being unable to publish or attend conferences makes it very challenging to compete in today...pressure to publish and more freedom to attend conferences, but after receiving her degree she was faced...ideas about things we could do for work, and they weren’t restricted to science jobs. Keira’s an optimist...career, but it was enough to start us down the entrepreneurial path. We threw some of our own money at this...thinking about making the switch from academia to entrepreneurship, share your thoughts with us in the comments...
  12. Multiplexed Capture of Promoter-enhancer 3D Chromatin Structures Using CRISPR

    Type
    Blog Post
    Published
    July 2, 2020, 12:40 p.m.
    ...sequencing data. While “pictures” generated with current 3C methods provide useful information about chromatin...compare results across multiple targets because different CAPTURE cell lines will have varying levels of...lines Cell lines, primary cells Table 1: Key differences between original CAPTURE and CAPTURE 2.0 methods...that occur during development and cellular differentiation. Using a cell line model, the Xu Lab tracked...enhancer-promoter interactions during erythroid differentiation. CAPTURE 2.0 captures chromatin's dynamic role....0 re-writes the script on gene regulation. References Han, J., Zhang, Z., & Wang, K. (2018). 3C and...
  13. Addgene's Cancer Collection Pages Connect the Research Community

    Type
    Blog Post
    Published
    Sept. 6, 2016, 2:30 p.m.
    ...cellular pathways involved in the development of different cancers and identifying the roles of key proteins...approaching the Ras problem by exploiting the different mutant versions of Ras that are most prevalent...function of any of these genes through several different applications such as fluorescent protein fusion... study it (as seen in the screenshot below). Currently, the page includes interactive maps for the Ras...interests in education and scientific writing.     References 1. Martz, Colin A., et al. "Systematic identification... PMID: 24651010. 3. Ledford, Heidi. "The ras renaissance." Nature 520.7547 (2015): 278-280. PubMed PMID...
  14. Viral Vectors 101: Producing Your rAAV

    Type
    Blog Post
    Published
    July 16, 2024, 1:15 p.m.
    ...updated by Ina Ersing in August 2023 References and resources  References  Aurnhammer, C., Haase, M., Muether...required adenoviral helper genes are supplied on two different packaging plasmids: the pHelper plasmid containing...titering assay, you’ll need to understand how different titers are measured. A TCID50 measurement reports...have a high-quality plasmid standard and rAAV reference material of a known titer on every qPCR run. Note...of a recombinant adeno-associated virus type 2 Reference Standard Material. Human Gene Therapy, 21(10),...
  15. Viral Vectors 101: Voltage Indicators

    Type
    Blog Post
    Published
    Jan. 30, 2024, 2:15 p.m.
    ...voltage indicators reviewed.   References and Resources   References Beck C, Zhang D, Gong Y. Enhanced... These types of sensors can have a variety of different components, but all contain a FRET pair, a genetic...specifically localize to the membrane, otherwise they aren’t all that useful. The cellular localization component...target – and this serotype can be selected to preferentially target your cell type of interest. Viral pseudotyping...powerful tool that swaps capsid proteins from different viruses to optimize them for targeting your cell...
  16. Capturing a Moment with Marc Zimmer’s “The State of Science”

    Type
    Blog Post
    Published
    July 30, 2020, 1:15 p.m.
    ..., and he wisely makes no such attempt. He is transparent about his own biases--many of which will be shared...journal editorials, science social media, and conference workshops for years. That is, presumably, why... is the title of the chapter that examines the inherent brokenness of scientific publishing and research...off the section saying “science itself is never inherently bad or evil. However, it is easy to do sloppy...today--the day you are reading this review--in the current period of rapid flux, the chapter might still feel...scientist who enjoys learning a little bit about many different things (part of the reason Addgene has been such...
  17. Simplify Cloning with in vivo Assembly

    Type
    Blog Post
    Published
    Oct. 18, 2018, 12:37 p.m.
    ...bottleneck in the experimental process. The majority of current cloning techniques involve the assembly of a circular...single PCR, for example for subcloning genes from different templates. All PCRs are run as an 18 cycle, 25... - 1 μl DpnI is added to the PCR mix to remove parental DNA (37 °C for 15 mins). This enzyme specifically...the MRC Laboratory of Molecular Biology. He is currently investigating the molecular biology of synaptic... on Twitter @jakefwatson and @JGarciaNafria.  References 1. Jones, Douglas H., and Bruce H. Howard. "A...for plasmid cloning Find our molecular biology reference here Find molecular biology protocols here   ...
  18. INTEGRATE: Bacterial Genome Engineering Using CRISPR-Transposons

    Type
    Blog Post
    Published
    Dec. 7, 2020, 2:53 p.m.
    ...Insertion of the mini-transposon can occur in two different orientations, but is strongly biased towards T-RL...integration efficiencies achieved with VchINT, at two different incubation temperatures. Data adapted from Vo ...and R ends - thus, scarless insertions are not currently possible, unlike methods involving homologous ...thanks to our guest blogger Leo Vo! Leo Vo is currently a PhD candidate in the Sternberg Lab at Columbia...Columbia University Medical Center. He currently studies CRISPR biology and CRISPR genome engineering technologies...Message or follow him on twitter @Vopinator.     References: Halpin-Healy TS, Klompe SE, Sternberg SH, Fernández...
  19. Better Dyeing Through Chemistry & Small Molecule Fluorophores

    Type
    Blog Post
    Published
    Sept. 8, 2016, 2:30 p.m.
    ...of green fluorescent protein (GFP) sparked a renaissance in biological imaging. Suddenly, cell biologists...dye (Figure 1a) and FAP systems (Figure 1e) are inherently fluorogenic and several others can be made fluorogenic... We continue to develop derivatives that have different spectral properties, exhibit high fluorogenicity...contributed by Luke D. Lavis. Luke D. Lavis is currently a Group Leader at the Janelia Research Campus,...modalities. Follow him on twitter @rhodamine110.   References 1. Liu, Zhe, Luke D. Lavis, and Eric Betzig. ...Imaging proteins inside cells with fluorescent tags." Trends in biotechnology 30.1 (2012): 8-16. PubMed PMID...
  20. An Introduction to Adenovirus

    Type
    Blog Post
    Published
    Oct. 3, 2023, 1:15 p.m.
    ...written by Addgenie Brian O'Neill.  References and resources References Bauzon, M., Castro, D., Karr, M.,...three (Servellita et al., 2023). Normally when children have acute viral hepatitis it is caused by the... the removal of certain adenoviral genes that apparently contribute to virulence (Tollefson et al., 1996...B. (2014). Adenoviruses: General Features. In Reference Module in Biomedical Sciences. Elsevier. https...Y. (2023). Adeno-associated virus type 2 in US children with acute severe hepatitis. Nature, 617(7961)...
Showing: 301 - 320 of 847 results