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  1. Viral Vectors 101: What is a Virus (and a Viral Vector)?

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    Blog Post
    ...coat (and envelope), has a “gutted” genome with genes central to the replication process removed. This... the viral vector, increasing both safety and usefulness of the tool. In fact, most gutted genomes have...vectors to reproduce when experimentally necessary, genes for the required proteins are packaged in separate...
  2. What the HEK?

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    Blog Post
    ... HEK is it good for?   As one of the older cell lines in the research community, many cellular research...organism. This pipeline is utilized to transduce cell lines for basic science research all the way up to the...HEK is wrong with it?   All cultured human cell lines are susceptible to contamination by mycoplasma and...
  3. Plasmids 101: TOPO Cloning

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    Blog Post
    ... Blog Perform Site Directed Mutagenesis by PCR Use REPLACR Mutatgenesis to Easily Generate Insertion ... be picked and sequenced for potential positive clones. Once you introduce your 3’-end “A” overhang insert...
  4. Plasmids 101: A Brief History of Plasmids and an Improved eBook!

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    Blog Post
    ... Bioblasts? Plasmagenes? In the 1940s and 50s, scientists were working to understand genetic cytoplasmic... as everything from parasites, to symbionts, to genes and the labels applied to them were vague or contradictory...biology was never the same. Over the next few years genes from different bacterial (and eventually mammalian...
  5. Even more elegant: Single injection CRISPR/Cas9 in C. elegans

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    Blog Post
    ...new method uses a selection cassette containing genes for hygromycin resistance and the Roller movement...testing, Dickinson et al. tested this system across 7 genes in parallel; when they injected 60-80 animals per...desired insertions on the first attempt for 6/7 genes. The data are clear - the SEC-based system is both...
  6. FlipGFP, a novel fluorescence protease reporter to study apoptosis

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    Blog Post
    ...reporter that has a large dynamic range and high brightness. The Shu Lab from UCSF designed an improved apoptosis...reporter that has a large dynamic range and high brightness. This reporter achieves approximately 100-fold...the fluorescent protein collection Find empty backbones for fluorescent protein fusions Browse the fluorescent...
  7. The Crispr Babies Saga Shows the Need for Action, Not More Delays

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    Blog Post
    ...scientists and the public together to build consensus guidelines, but there was never a specific timeline for ... not remembered kindly. However, despite many headlines questioning if He’s experiments prove otherwise...genetics this time?” She lives with her partner (in business and life) in an old Girl Scout Cookie factory ...
  8. Scientists Map the SARS-CoV-2-Human Interaction Network

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    Blog Post
    ...potential human helpers of SARS-CoV-2 (especially the ones that are druggable) is a key step in our strategy...as a control. For easier portability, all viral genes are flanked by EcoRI and BamHI restriction sites...study - so you might want to be careful with these clones (and help us figure out what is going on there!...
  9. Using CRISPR/Cas9 to Edit Disease Out of the Genome

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    Blog Post
    ...treat AD using CRISPR/Cas9. They are targeting the genes responsible for both early onset and late onset ...diseases In 2013, a team led by Jinsong Li from the Chinese Academy of Sciences found that mice with a dominant...efficiency. In 2022, despite the increasing effectiveness of CRISPR/Cas9, scientists are still looking...
  10. Multiplexed Overexpression of Regulatory Factors (MORF) collection

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    Blog Post
    ... on and off by binding proximal to their target genes. Since gene expression patterns determine everything...genetic and expression control systems to mimic illness on a molecular level. Atlas resource The TF map...from the library to further investigate specific genes and TF isoforms. Due to the size of the collection...
  11. Revamp Your Lab Meetings With Creative Virtual Collaboration

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    Blog Post
    ...different institutes, disciplines, and cultural backgrounds.” This work outlines the need for clear communication.../doi.org/10.1371/journal.pcbi.0030044 Wuchty S, Jones BF, Uzzi B (2007) The Increasing Dominance of Teams...
  12. Synthetic Photobiology: Optogenetics for E. coli

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    Blog Post
    ...directed transcription from a given promoter. To harness the power of light, Christopher Voigt’s lab created...plasmids, with one RR (ompR) encoded chromosomally. Leakiness was also an issue; some promoter activity persisted...with other pathways. They also reduced system leakiness and increased dynamic range to around 100-fold...
  13. Plasmids 101: How to Verify Your Plasmid Using a Restriction Digest Analysis

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    Blog Post
    ...is digested with either HindIII and BamHI alone (lanes 4-5), there is a single band of 7.3 kb representing...interpret the bands that you get in your sample lanes. Choose your ladder based on the expected band sizes...supercoiled, relaxed and nicked. If your digest lanes look like your uncut lane then there is something...
  14. Screening for Successful Genome Editing with Digital PCR

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    Blog Post
    ...bi-allelic mutations typically desired when screening clones for complete functional knockout of your target...difference (Figure 3). If you are interested in harnessing the power of digital PCR screening to validate.... 6. Fu, Y. et al. High-frequency off-target mutagenesis induced by CRISPR-Cas nucleases in human cells...
  15. Building and Validating Recombinant Antibodies: A Case Study

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    Blog Post
    ...IF-ICC worked well for identification of the correct clones, it was determined that for some constructs more...more than 90% of the colony PCR validated clones unexpectedly failed to produce functional R-mAbs. It was...were created. This greatly limited the number of clones that needed to be screened through functional assays...
  16. Viral Vectors 101: Biosensors

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    Blog Post
    ...quantifiable readouts for levels of different chemicals, hormones, proteins, etc., that you are interested in. The...potentials; it’s an ion of interest for many disciplines! Most of the sensors designed for calcium generate...are sensors available for other ions including magnesium, potassium, and zinc. These ion sensors can be...
  17. Viral Vectors 101: Types of viruses

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    Blog Post
    ...due to their propensity to integrate into proto-oncogenes and disrupt their expression (Robinson, 1982)....biological research, you might have an idea which ones could be helpful to you. Interested in learning ...Therapies in the New Era of Personalized Medicine. Genes Dis. 2017 Jun;4(2):43-63. DOI: 10.1016/j.gendis.2017.04.001...
  18. CasPEDIA: A Functional Classification of Cas Enzymes

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    Blog Post
    ...requirement, gRNA, and multiplex ability Experimental guidelines and applications Protein structure and properties... documents the target substrate (DNA/RNA and strandedness) along with its action on the substrate (nick...can I use it? CasPEDIA operates like many search engines, featuring both a general search bar tool and an...
  19. Opto-Nanobodies: Using Light to Manipulate Cell Signaling and Protein Purification

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    Blog Post
    ...sensing domain from the oat plant (Avena sativa). In darkness, the AsLOV2 domain folds back on itself in a closed...that expressed membrane-localized mCherry. With darkness, SOS binds Ras and initiates the extracellular...These results demonstrate that OptoNBs can be harnessed to regulate signaling pathways such as the Ras...
  20. Form Your Own Peer Mentoring Group: A How-To Guide for Scientists

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    Blog Post
    ...through my work with the renowned Healthcare Businesswomen’s Association (HBA) Boston Chapter and the Massachusetts... 3 topics and write them on a board to see which ones get the most hits. Commit to a meeting schedule ... get to present formally often enough) and give honest, critical feedback for improvement. Go to a science...
  21. Hot Plasmids - March 2020 - base editors, GEVI, MoClo, and optogenetics

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    Blog Post
    ...capacity of 4-5 kb limits the delivery of larger transgenes, such as base editors which have a gene size ...to GFP-based sensors in terms of response and brightness. They also do not spectrally separate from green...(ex: tamoxifen). As the name suggests, CreLite combines the Cre/lox system with optogenetics. Cre activity...
  22. What's New in CRISPR - November 2021

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    Blog Post
    ...Brook Pyhtila One drawback to the commonly used S. pyogenes CRISPR/Cas9 system is that it is too large to ...Find the SEND plasmids    Figure 1: SEND combines an endogenous Gag homolog, cargo RNA, and fusogen...editing to correct mutations in a variety of target genes and cell types. Their Nature Biotechnology paper...
  23. Antibodies 101: Polyclonal Antibodies

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    Blog Post
    ... the same isotype. But together, all the B cell clones in the immune system make different isotypes of... starts with selecting just one of these B cell clones for further antibody production, polyclonal antibodies...antibody increases the likelihood that one of the clones will still recognize your protein. For the same...
  24. Plasmids 101: Golden Gate Cloning

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    Blog Post
    ...overcome by screening a higher number of potential clones. Golden Gate assembly has a few advantages over... allows for multiple DNA components (promoters, genes, terminators, etc) to be assembled in the correct...ligated following a heat inactivation step. If your genes of interest or destination vector contain multiple...
  25. CRISPR Meets Synthetic Biology: A Conversation with MIT’s Christopher Voigt

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    Blog Post
    ...malignant cell, then you’d need the ability to turn on genes at different times. It requires more complex synthetic...on an engineering project including hundreds of genes and regulation and resource control - everything...gives us enough hardware to control hundreds of genes. We’ve created enough regulatory elements, CRISPRs...
  26. CRISPR 101: Anti-CRISPR Proteins Switch Off CRISPR-Cas Systems

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    Blog Post
    ...Nme) (Pawluk et al., 2016). While Streptococcus pyogenes Cas9 (SpyCas9) is the most used and well studied... Selection marker while engineering viruses Acr genes can be used as positive selectable markers in engineering...viruses. For example, an Acr gene was used to replace genes in the difficult-to-engineer Sulfolobus islandicus...
  27. Viral Vectors 101: Virus Safety

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    Blog Post
    ...with those particles. Since the Env, Gag, and Pol genes are not encoded in the transfer plasmid, the component...also have a propensity to integrate into proto-oncogenes, which can lead to cancer. These viruses need ...attention to the trainings!), even if you know guidelines for best practices and have been trained elsewhere...
  28. Science communication: 9 Strategies to Get Your Foot in the Door

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    Blog Post
    ...institute’s blog. The Wellcome Trust blog or the John Innes Student Voice are two examples. Many blogs like ...Londonist. BBC provides a peak into their day-to-day business with popular work experiences of 3-10 days. And...started writing three years ago on a field trip in Indonesia. Since then, I have tried many things: photography...
  29. Plasmids 101: Terminators and PolyA signals

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    Blog Post
    ...Plasmids designed to express genes in a given host cell type are generally broken down into two broad...Increases Expression Levels of Lentivirus-Delivered Transgenes but Has the Potential to Reduce Viral Titer in...Posttranscriptional Regulatory Element Enhances Expression of Transgenes  Delivered by Retroviral Vectors. Journal of ...
  30. Gaining Leadership Skills Volunteering at a Professional Organization

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    Blog Post
    ...management-for-scientists-managing-vs-leading. The National Postdoctoral Association (NPA) outlines 6 Core Competencies that all postdocs (but also...actionable tasks and I made a point of sticking to deadlines and performing the work I agreed upon (just as...accommodate many different types of people in order to harness their strengths and work effectively. Leadership...
  31. How-to: 5 Steps to a Great Panel Discussion

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    Blog Post
    ...panelists will negatively affect timing and the liveliness of the discussion (see below on timing). Get ...what happens to the attention of the audience – phones come out, postures shift, they are checking out...more great tips on running panel discussions see Guidelines for Great Panels by Scott Kirsner and How to ...
  32. CrispyCrunch: High-throughput Design and Analysis of CRISPR+HDR Experiments

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    Blog Post
    ...Manuel Leonetti to tag all 22,000 protein coding genes in the human genome with fluorescent proteins. For...tool Crispor by Max Haeussler. With a few extra lines of code, we enabled it to return guides and primers...which is important for quality control. The only ones we found that worked with NGS data were: Crispresso...
  33. Plasmids 101: 5 factors to help you choose the right cloning method

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    Blog Post
    ...reaction but can be used to quickly generate multiple clones. Difficulty: If you’re an experienced cloner, you...also quite efficient; although efficiency often declines as the number of fragments you’re hoping to assemble...out protocols for plasmid cloning Find vector backbones Read our molecular biology reference ...
Showing: 521 - 560 of 905 results