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We narrowed to 1,009 results for: PLE

Showing: 341 - 360 of 1009 results

  1. Clear and Accessible Writing

    Type
    Blog Post
    ...scientists around the world. In 2004, that was a fairly simple goal… and we had no idea how much our understanding...text into our work, we began to realize how the principles we used in our daily content writing applied ...writing in scientific writing, and how often the principles we developed to use in our website and educational...Steps to clear writing Let’s use Figure 1 as our example. Remember, our goal is to use words to describe...Gradient Ultracentrifugation. The reader may be, for example, a graduate student using viral vectors for the...process, try writing your own alt text for the example image. We’ll wait!  Done? Excellent! We asked our...and help make your paper accessible to even more people.  Whether you start small with alt text or immediately...

  2. Pooled CRISPR Libraries Offer Genome-Wide Control for Large-Scale Functional Screens

    Type
    Blog Post
    ... synthetic transcription activation complex consisting of multiple distinct effector domains that work...well enough on any gene that they could be used by people with little bioengineering expertise? “This is ... Mediator or SAM. SAM is an engineered protein complex for the transcriptional activation of endogenous...with a BRAF inhibitor. (The test was the perfect complement for one conducted earlier by the Zhang lab for... These libraries are lentiviral in nature, so please ensure that you are equipped and authorized to ...sam.genome-engineering.org/. Crystal structure of Cas9 in complex with guide RNA and target DNA. Nishimasu H, Ran...transcriptional activation by an engineered CRISPR-Cas9 complex. Konermann S, Brigham MD, Trevino AE, Joung J, ...

  3. Form Your Own Peer Mentoring Group: A How-To Guide for Scientists

    Type
    Blog Post
    ...Senior people (of which there are never enough, especially in underrepresented groups) reach multiple mentees...share a similar direction or problem. For example, a group of people who are all interested in making a transition... at my company, but there weren't enough senior people willing to step up and be matched with the many... or both of these criteria. If you can, include people from different labs, departments or organizations... such as pre-reads, videos or exercises to be completed in preparation for the meeting or to be read or...event together and help each other practice meeting people – compete for fastest to set up a coffee date or...

  4. Viral Vectors 101: An Introduction to AAV

    Type
    Blog Post
    ...interested in expressing multiple small genes, you can design single rAAV vectors with multiple genes packaged ...indicate the ITR and serotype, respectively. For example, AAV2/8 has a type 2 ITR and a type 8 serotype....interested in heftier genes, you can coinfect with multiple viruses to express genes or gene sets over 4.7...conventional single-stranded AAV (ssAAV) and a self-complementary AAV (scAAV) vector. Full-length ssAAV vector...2.5Kb) and you need expression in a hurry, self-complementary AAV (scAAV) may be an option (McCarty et al.... E. Monahan, and Richard J. Samulski. "Self-complementary recombinant adeno-associated virus (scAAV) vectors... Multiple Authors...

  5. Transferable Skills Guide: Public Speaking

    Type
    Blog Post
    ...presentation, lost in a sea of data, my mind went completely blank. After several seconds of truly panicked...honest, if my paper hadn’t been ridiculously more complex than the one before it, I don’t think I would have...blocks. The problem is, when it happens to other people, it’s normal and quickly forgotten, and when it...and awful. So try to keep some perspective. Most people won't notice, or won't remember and those who do...dumpster noises were just last week!  Nerves It’s completely normal to be anxious, nervous, and/or apprehensive...still get nervous quite regularly, and I've had multiple jobs where all I did was public speaking. If you're...make a strategy that can help. Even something as simple as telling yourself, “I can stop and check my notes...

  6. All in a Twist: dsRNA

    Type
    Blog Post
    ...silencing complexes (RISCs), which detect dsRNA in the cytoplasm and use it as a guide to complementary RNA ... DNA at risk. Consequences of duplexed RNA Mammalian cells have multiple receptors in place to sense dsRNA... pathogenic proteins, as well as in the lab to deplete expression of proteins of interest. RNAi has even... cytosol. Fig. 2: Endogenous sources of duplexed RNA DNA:RNA hybrids Sometimes ssRNA just needs...intermediates in the process. These transcription-coupled R-loops are transient in nature and will dissociate...dissociate when gene transcription is complete. However, transcription of thousands of genes is constantly...

  7. Plasmids 101: Using Transposons in the Lab

    Type
    Blog Post
    ...QCascade complex surveys the genome and binds its target DNA sequence. The transposase complex binds the...really depends on where a transposon lands. For example, in bacteria, transposons can move antibiotic resistance...is left behind. When the transposon-transposase complex finds its target site, it integrates, which produces...TEs You can think of autonomous transposons as “complete transposons” since they encode the protein they...selecting a transposon for a mutagenesis screen. For example, piggyBac and Tol2 are best for screening promoters...DNA-targeting module with the crRNA, 3) a transposase complex made up by three transposase proteins (TnsA, TnsB...

  8. Live and Let Dye: Self-Labeling Protein Tags

    Type
    Blog Post
    ...ligands to the same sample to label sub-populations of your protein of interest. For example, the Cohen lab...derivatives of its substrate O6-benzylguanine (BG) (Keppler et al., 2003). This engineered hAGT later became...multi-component systems can be complicated to implement, they can be highly specific with a small and ...Atto590-BG (green), imaged with stimulated emission depletion (STED) nanoscopy. Scale bar, 2 μm. Inset shows...proteins in vitro, you can even use the same tag for multiple proteins but label each separately before reconstituting... assembly-regulating proteins in vitro reveals complex events. a) Micrographs of a fluorescently-labeled..., biotin, or magnetic beads. In one innovative example, the Zhang lab used SNAP-tag to decorate synthetic...

  9. Mobile-CRISPRi: Bringing CRISPRi to Diverse Bacteria

    Type
    Blog Post
    ...when studying them since their complete knockdown is lethal. Incomplete or titratable knockdown, however...the tools scientists can use to study them. For example, gene knockdown with CRISPR interference (CRISPRi...wall. Once in the recipient cell, the CRISPRi DNA (purple) flanked by left and right Tn7 end sequences (green...showed that Mobile-CRISPRi is transferable into multiple bacterial species including several involved in...pathogenic strains and environmental isolates. For example, Peters and colleagues used Mobile-CRISPRi to knockdown...if that gene is a target of an antibiotic. For example, let’s take a look at the essential gene folA which...also possible with Mobile-CRISPRi. As a proof of principle, Peters and colleagues constructed a 40-member...

  10. Starter guide to induced pluripotent stem cells (iPSCs) part 1:  A renaissance in regenerative medicine

    Type
    Blog Post
    ...into multiple cell types of the same lineage. Blood (hematopoietic) stem cells are a good example of multipotent...mostly to maintain cell numbers or replenish dying cells. For example, hematopoietic stem cells found in...functions [1]. In many tissues, stem cells serve to replenish/replace damaged cells that no longer function ...[1]. Stem cells’ ability to differentiate into multiple cell types makes them useful models for developmental...thought of as descendants of totipotent cells. An example of pluripotent cells is embryonic stem cells (ESCs...in science communication and publishing after completing her postdoctoral training from Massachusetts ...

  11. Plasmids 101: 5 factors to help you choose the right cloning method

    Type
    Blog Post
    ...increases. Multiple inserts: There are some cloning methods that make working with multiple inserts a ...as some methods are more amenable to combining multiple DNA fragments than others. In today’s post, we...with a special emphasis on these five categories. Please note that many of the following cloning methodologies...interested in learning more about any one of them, please click on the links throughout the text or see the...per reaction but can be used to quickly generate multiple clones. Difficulty: If you’re an experienced cloner...Golden Gate assembly allows one to simultaneously complete an ordered set of scarless ligations following...one right answer, so don’t be afraid to explore multiple approaches to find out which one works best for...

  12. Plasmids 101: Optimizing Plasmid Yields

    Type
    Blog Post
    ...yield. Keep in mind that you might need to use multiple techniques for a particularly stubborn prep. ...remove endonucleases (see figure at right for an example). Look out for carbohydrates Certain strains, including...the cell lysis process. To ensure that lysis is complete, use a reagent like Qiagen’s LyseBlue, which uses... uses color to show you if lysis is incomplete. Protein expression strains are not good for cloning Bacterial...yields. Why would volume make a difference? In the simplest of terms, more volume = more cells = more plasmid...culture media Changing to a richer media or adding supplements can improve your cell density, leading to an ...normally recommended antibiotic concentration. Add supplements to the media You can achieve higher cell density...

  13. Light Sheet Fluorescence Microscopy

    Type
    Blog Post
    ...cameras with electron multiplying couple-charged device (EMCCD) or complementary metal-oxide semiconductor (...neurosciences.  These developments in microscopy coupled with techniques that make tissues transparent are...beam into a thin sheet to illuminate a fluorescent sample and captured the reflected light using a different...combined light sheet microscopy with sequential multiple-view reconstruction (5). In order to image large...microns, illuminates only one thin plane of the sample surrounding the focal plane of the detection lens...problem is to illuminate and acquire images of a sample from two opposing sides and merge the images, such...through Addgene.  The combination of LSFM with multiple tissue clearing strategies and neuronal labeling...

  14. With an Eye Towards the Future, We Look Back at the March for Science

    Type
    Blog Post
    ... disturbing trend in the number of high profile people denying science, from celebrities falsely claiming...scientists questions about their work. Thousands of people showed up; some with some really great signs. The...work because it's important to our health.  Most people won't argue with that idea, but they might feel...figures.  Ask me about my science!", read my sign.  People asked, and we talked.  That's a win. Mark Lucera..., challenged us. I worried the march would be a simple, unquestioning celebration of science, at a time...funding, and teaching experience that it takes to complete your resume, without ever thinking that research...things about science. We need to keep encouraging people to look for evidence through education.  My only...

  15. Course-Based Undergraduate Research Experiences (CUREs)

    Type
    Blog Post
    ...When Karl Barry Sharpless was awarded this year’s Nobel Prize in Chemistry, he joined an elite club, ...his program. Initially, Provost made his labs completely open-ended, allowing every student to work on... the culmination of many such experiences. For example, students in Provost’s course recently used a combination...Kowalski et al., 2016; Scott, 2021). In fact, completion of Provost’s CURE increased students’ confidence...Community (MCC) that seeks to reduce barriers to implementation. Funded by the NSF (with Co-PIs Jessica Bell...for your classroom, I highly recommend you try implementing one. It's likely only a matter of time before...Poirier, V., Pellettieri, J. 2020. The exon junction complex is required for stem and progenitor cell maintenance...

  16. Better Dyeing Through Chemistry & Small Molecule Fluorophores

    Type
    Blog Post
    ...removing excess dye from the sample, which is particularly important for samples where washing is difficult...reason is something called “the photon budget”: each sample has a limited number of fluorophores and each fluorophore...of information one can extract from a biological sample is wholly dependent on the photon budget and pushing...fluorescence microscopy often requires more photons. For example, moving from transient overexpression of protein... desperate to extract a few more photons from a sample. Chemical fluorophores can be substantially brighter...labeling chemistry easier and more functional in complex biological environments such as live cells and ...brightness of the resulting conjugate, and the complexity of the system. A particularly desirable property...

  17. Interview: Hodaka Fujii on enChIP, New CRISPR Tools, and More

    Type
    Blog Post
    ... for example, helping to improve the papers submitted to journals. In addition, it is my pleasure to interact...enChIP system enables us to express the CRISPR complex much easier in various cells, including primary...technologies consisting of iChIP and enChIP are recent examples. We also developed the inducible translocation...and PLoS One. Additionally, you are involved in multiple professional scientific societies. Why is being...system of journals and grant applications, for example. However, at the same time, it's fun to be involved...give to post-docs and graduate students as they complete their appointments in your lab?  Fujii: These ...develop new technologies, hopefully they'll be completely different from what we are now doing in my lab...

  18. Starter Guide to induced Pluripotent Stem Cells (iPSCs) Part 2:  Reprogramming and Transdifferentiation

    Type
    Blog Post
    ...reprogramming factors can be delivered and expressed in multiple somatic cells via various methods. Some of the...directed differentiation.” Specific cell media, supplements, bioactive small molecules, and growth factors...natural transdifferentiation is rare in mammals, an example is observed in the pancreas when excess β-cell ...1987, Davis et al. reported one of the earliest examples of transdifferentiation in vitro where treatment... of interest for in vivo transdifferentiation. Multiple cell types such as fibroblasts, hepatocytes, and...vitro Both in vitro and in vivo Epigenetic marks Complete removal to convert to iPSCs and re-establishment...major processes by which cells are converted to replenish and repair cells that are lost or damaged. Both...

  19. Neuronal labeling with Spaghetti Monster

    Type
    Blog Post
    ... The central nervous system (CNS) orchestrates complex processes enabling organisms to control their movements...the visible spectrum, researchers can also use multiple FPs in single experiments and visualize numerous.... smFPs are literally composed of FPs fused to multiple epitope tags. Indeed, to create the smFPs Looger...labeling of these fine structures through their multiple, high-affinity binding sites for primary antibodies...expressed and/or similar proteins Through their multiple, highly specific antibody binding sites and primary...used to distinguish highly similar proteins. For example, N-cadherin (cadherin-2) is a postsynaptic cell...super-resolution STORM imaging, and electron microscopy. Sample preparation for these techniques sometimes makes...

  20. CRISPR 101: Cytosine Transversion Editors

    Type
    Blog Post
    ...and replaced it with a double-bonded oxygen. This simple enzymatic reaction enabled conversion between the...and one-ring pyrimidine base. This is a far more complex chemical task, not a job for a single enzyme. ...bind DNA, Cas9 requires (1) a guide RNA, (2) a complementary DNA sequence, and (3) a protospacer-adjacent...that site is filled depends on cellular factors. Multiple labs tried to identify beneficial factors to include...separate and preventing repair based on the complementary strand. This could explain why the edited U ...original G is not primarily converted back to a complementary C. Optimized base editing with eOPTI-CGBE and...so the Yidi Sun and Erwei Zuo labs tested and implemented several of these advances for CGBEs (Yuan et ...
Showing: 341 - 360 of 1009 results