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Showing: 341 - 360 of 1005 results
  1. Viral Vectors 101: Virus Safety

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    Blog Post
    ...replication of virus and its infectivity in check. Engineering controls, safety systems that are built into ... you can receive appropriate treatment and/or monitoring. Virus-specific concerns   In nature, some viruses...protection! When centrifuging viruses (a necessary step during production), there is a significant risk for aerosol...of following your lab’s biohazard policies. Administering Virus Many virus experiments involve needles...accidents is not following safety protocols.) If administering virus to mice, part of your preparation should...let you work with these valuable tools without endangering yourself or others. Happy transducing! Resources...
  2. Selecting Your Plasmid Purification Kit

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    Blog Post
    ...There are a few different issues that can arise during the plasmid purification process. One is the possibility...broken into a few broad stages: lyse the bacteria harboring your plasmid; separate plasmid DNA from unwanted...environmental impact, check out Addgene’s blog post on bringing sustainable practices for the lab. Plastic consumables...from bottles and the overall weight of the package during shipping. Of the kits reviewed here, NEB’s Monarch..., so be sure to check with your lab manager or ordering department for these.  While budget is an important...Different Uses Plasmids 101: Optimizing Plasmid Yields Bringing Sustainable Practices to the Lab: Easy Action ...resources on addgene.org DNA Quantification Protocol Recovering Plasmid DNA from Bacterial Culture Protocol ...
  3. Common Injection Routes in Mice

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    Blog Post
    ... the abdomen. They are a popular choice for administering different drugs and viral vectors. Like IV injections...suggests, in the muscle. Common uses include administering vaccines, pain meds, or other drugs. Identifying...don’t always require needles. If needles make you cringe or your experiment will allow you to avoid poking...straight to the stomach. This technique involves administering medication through a feeding tube with a bulb...introduction to common injection routes in mice! When considering what method you’d like to use, remember that ...Organisms Additional resources on Addgene.org Genome Engineering Guide CRISPR Mammalian Expression plasmids Cre-Lox...
  4. Light Sheet Fluorescence Microscopy

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    Blog Post
    ...tissue clearing Similar to light microscopy, there have been significant advances in tissue clearing techniques...brightness with increasing depth caused by light scattering and absorption.  Finally, the photomultipliers...techniques during this century.  The first successful attempt to render fixed anatomical preparations transparent...Ultramicroscopy with tetrahydrofuran-based tissue clearing (13,14). A few years later, Karl Deisseroth’s ...  The combination of LSFM with multiple tissue clearing strategies and neuronal labeling methods will ...
  5. SciComm: Taking Science to Elementary and Middle Schools

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    Blog Post
    ... parents in STEM careers, chances are they’re wondering how they could contribute to the school, too. ...Middle school: supplementing the science curriculum Sharing my expertise with our district middle school was... an authority in this area. What is genome engineering? How does CRISPR work? This section was essentially... of the talk by running it by the teachers and sharing some slides on Twitter, where I was able to get...computers and the internet before it, genome engineering technology is moving along much faster than it...understanding genetics is so timely.” Genome engineering, and many other technologies and fields in biology...
  6. Transferable Skills Guide: Identifying Your Transferable Skills

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    Blog Post
    ...held. Imagine this situation: You’ve spent hours scouring a company’s LinkedIn pages, given yourself the...guaranteed to get the job, however, many times the hiring team will also want to examine not just technical...technical skills, but also transferable skills, before offering someone their dream job; They want to know if ... and to demonstrate them to the people who make hiring decisions. Though having all the technical skills...get a great snapshot of the skills that you can bring into pretty much any other workplace. To get your... for non-academic science careers Learn about mentoring Resources on Addgene.org Check out our careers...
  7. MXS Chaining

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    Blog Post
    ...Knight TF. Engineering BioBrick vectors from BioBrick parts. Journal of biological engineering. 2008;2:5... fluorescent protein were fused in-frame to a tethering partner, which directed localization of the fluorophore...Construct Fluorophore Excitation/emission maxima Tethering partner Subcellular localization 1 TagBFP 399nm...Constraints on the order of the modules, because neighboring fragments require compatible cohesive ends Engler...biological part assembly. Journal of biological engineering. 2010;4(1):1. Pubmed PMID: 20205762. PubMed Central...
  8. Don’t FRET: Bimolecular Fluorescence Complementation Makes Visualizing Protein-Protein Interactions Easy

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    Blog Post
    ...the non-radiative transfer for energy between neighboring fluorophores, FRET can be used to detect the ...ratios) to generate useable data. What’s more, measuring and quantifying FRET is often easier said than...complete FP because the PIPs they’re tethered to bring them into close proximity (Figure 1). Formation ...independent of PPIs. Overexpression can be assessed by comparing the expression levels between BiFC constructs ...Analysis of Protein Interactions in Live Cells. Cold Spring Harb Protoc 2013:pdb.prot076497. https://doi.org...Fluorescent Protein 101 blog posts Read our blog post covering an introduction to FRET Resources on Addgene....
  9. Droplet Digital PCR for AAV Quantitation

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    Blog Post
    ...where droplet digital PCR (ddPCR) comes in. AAV titering using quantitative PCR Before we dive into the... PCR is complete, the results are analyzed by comparing the threshold fluorescence of the viral DNA to...reasons, we are in the process of transitioning our titering method from qPCR to ddPCR. Droplet digital PCR...reference, meaning saving on reagents (and time)! AAV titering using droplet digital PCR Droplet digital PCR ...generator, you will have to be careful about transferring your droplets from the droplet generator to ...detection of microbes. Some applications include measuring viable probiotics and detecting circulating pathogens...
  10. Getting to Know Expansion Microscopy

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    Blog Post
    ...by loss of protein during digestion, or masking of epitopes during sample anchoring and gel polymerization... Tillberg, et al. 2016). That being said, the anchoring, digestion, and expansion steps can impact the...occurs, due to a reduction in target concentration during expansion. One group has found that using Fab fragment...et al (2023) Magnify is a universal molecular anchoring strategy for expansion microscopy. Nat Biotechnol...
  11. Save Time with Transient Plant Leaf Transformations

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    Blog Post
    ...are syringe or vacuum infiltration. Syringe infiltration (D'Aoust et al., 2009): Usually a syringe without...contains a plasmid with a T-DNA (transfer-DNA) region. During infection this T-DNA region is transferred into...transformation and gene expression can be tracked. During a transient leaf transformation, the engineered...Transient expression of antibodies in plants using syringe agroinfiltration." Recombinant proteins from plants...
  12. Designing Your Chalk Talk for the Academic Job Interview

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    Blog Post
    ... You need to balance respectfully answering questions while steering the conversation back to your vision...proposal or a 10-year research plan. I suggest preparing for both types. Your research vision is your approach...proposal will distinguish between competing models. Comparing model A vs. B is more constructive than testing...vision. On the day of your chalk talk Bring your own fresh set of erasable markers. You’ll have the colors...and consider eating one before your chalk talk. Bring your own bottle of water. If possible, write down...
  13. To Codon Optimize or Not: That is the Question

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    Blog Post
    ...optimization? Codon optimization is an approach in gene engineering to improve gene expression by changing synonymous...efficiency and thus protein expression without altering the sequence of the protein. As DNA synthesis ...tRNAs, including those that exhibit wobble base-pairing (a tRNA that can recognize multiple synonymous ...of translation. The ribosome may slow and pause during elongation which may actually be necessary for ... SA, Zhou W, Mauro VP (2005) An mRNA-rRNA base-pairing mechanism for translation initiation in eukaryotes...02)00362-x Stadler M, Fire A (2011) Wobble base-pairing slows in vivo translation elongation in metazoans...
  14. Overcoming the AAV Size Limitation for CRISPR Delivery

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    Blog Post
    ...inteins. Split inteins are a pair of naturally occuring polypeptides that, when at the ends of two proteins...Marraffini LA, Zhang F (2013) Multiplex Genome Engineering Using CRISPR/Cas Systems. Science 339:819–823...Spinner HB, Baney KLM, Chuck J, Tan D, Knott GJ, Harrington LB, Al-Shayeb B, Wagner A, Brötzmann J, Staahl..., Grimm D (2014) CRISPR/Cas9-mediated genome engineering: An adeno-associated viral (AAV) vector toolbox...Gao L, Makarova KS, Koonin EV, Zhang F (2019) Engineering of CRISPR-Cas12b for human genome editing. Nat... Mary Gearing...
  15. Hot Plasmids: Fall 2024

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    Blog Post
    ...But CRBN has been difficult to study in vitro, requiring either expressing it with additional cofactors...faster, with expression levels comparable to GFP during early embryogenesis (Figure 3). mScarlet-I3 also... through the middle of each embryo are shown, comparing GFP, wrmScarlet (mScarlet), and the new mScarlet3...proteins of interest) and mScarlet-I3 for scenarios requiring rapid maturation and prolonged imaging with minimal...high rate of spontaneous antibiotic resistance interfering with selection. Using an inducible Cas9 expression...to cause disruption of the target gene. Lastly, curing the mCherry-sgRNA plasmid leaves an edited strain...
  16. CRISPR Activation: A Practical Guide

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    Blog Post
    ...the Wyss Institute for Biologically Inspired Engineering. CRISPR/Cas9 is an enormously plastic tool and...activator by simply providing a new gRNA rather than engineering an entirely new protein. This makes it much cheaper...types of Cas9 activators, check out our blog post covering VP64, Suntag, SAM, and VPR. Worry less about off...the Wyss Institute for Biologically Inspired Engineering.     Alejandro (Alex) Chavez is a member of the...develop several popular CRISPR-based tools for altering DNA sequence or regulating gene expression.   ...Church GM (2015) Unraveling CRISPR-Cas9 genome engineering parameters via a library-on-library approach....
  17. Replacing Paper: Tips for Choosing an Electronic lab Notebook

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    Blog Post
    ...briefing, to quick notes, to finances, to flights & ordering food - everything is covered.   So why are we ...folders in complex ways, there are solutions that bring more to the table in terms of data traceability ...researchers today generate vast amounts of digital data during their work. It is already becoming impossible to...to keep all their data in one place and avoid scattering intellectual property across various software...functionalities include comments, notifications, sharing files, assigning team members to certain tasks,...compliance requirements – e.g. 21 CFR part 11, HIPAA? Answering this question helps you evaluate whether the ELN...
  18. Antibodies 101: Introduction to Gating in Flow Cytometry

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    Blog Post
    ...interested in measuring a population based on a fluorescent stain, you might be wondering which second ...types of scattering that occur when a cell is pulsed by the laser. Within each type of scattering, you also...to keep it short though, promise! FSC and SSC: scattering To digitally extract your cells based on their...cells stain positively for both markers. When comparing two markers simultaneously, we commonly describe...
  19. 10 Steps to a Perfect Science Talk

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    Blog Post
    ...about the particular audience and venue before tailoring each presentation appropriately.  Find out who...many non-scientists be present?  Always ask the hiring manager or host for topic advice. An added bonus...figure out how to make it suspenseful. 4. Start preparing your talk early - like today Don’t wait until ... all graduate students and postdocs form peer mentoring groups to practice giving talks and getting feedback...always have a few extra slides in their back pocket. During your practice rounds, encourage your listeners ...down it is a great segue to talk about how the sharing model works. See if you can elicit helpful comments...
  20. Editor's Choice, October 2016

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    Blog Post
    ...important information for anyone considering a postdoc. In “Changing Labor Laws Bring Increased Postdoc Wages,...readership with over 75,000 views. Changing Labor Laws Bring Increased Postdoc Wages Our most popular blog post...Grad School Advice Part 2: Building Community Engineering the Plant Genome Using CRISPR/Cas9 Healthcare...Reddit for Science Communication Changing Labor Laws Bring Increased Postdoc Wages I hope you all have a great...
Showing: 341 - 360 of 1005 results