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Showing: 721 - 760 of 1054 results
  1. Developing Lab Management Software for Biology

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    Blog Post
    ...this though) about the fact that containers are distinct from their contents. You should be tracking both...tray or a freezer. Some are disposable, like a plastic tube. Talk with your lab team about how they would...getting up and running and more time working on interesting biotechnology code.There are valid technical ...
  2. Pairing CombiGEM and CRISPR for Combinatorial Genetic Screening

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    Blog Post
    ...one-pot reactions with straightforward restriction digestion and ligation steps to build barcoded lentiviral...pool of lentiviral plasmids. Multiple rounds of digestion and ligation result in plasmid libraries containing...tailored to address the users’ specific research questions. CombiGEM has been successfully applied to functionally...
  3. CRISPR in the Clinic

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    Blog Post
    ...Repair of CFTR by CRISPR/Cas9 in Intestinal Stem Cell Organoids of Cystic Fibrosis Patients." Cell Stem ...adult stem cells isolated from two patients with cystic fibrosis (Schwank et al). They were able to demonstrate...
  4. Viral Vectors 101: Chemogenetics

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    Blog Post
    ... instead that it is noninvasive and has longer-lasting effects. Building your chemogenetic system To set...they retain their intracellular interactions and still set off the same pathways, giving rise to the same... create ultrapotent PSEMS (uPSEMs) that have drastically increased potency. Download our chemogenetics...
  5. A Look Back at One Year of Plasmid Sharing for COVID-19 Research

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    Blog Post
    ... be used for the development of vaccines and diagnostics (Hsieh et al., 2020). As the virus spreads around...also deposited plasmids for producing COVID-19 diagnostic enzymes. Plasmids in this toolkit include ones...starting point for SARS-CoV-2 researchers to investigate how the virus interacts with human cells. Addgene...
  6. Meet an Addgenie: Insights into Grad School, Career Paths, and More

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    Blog Post
    ...you can make big changes in your career path and still find comfort and happiness there. Read all of the...part of why they work at Addgene. I posed this question to all nine of my interviewees. Fabienne Furt,...people.” My absolute favorite response to this question came from Lucy Hammer, our Financial Operations...
  7. Early Career Researcher Toolbox: Finding Relevant Papers

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    Blog Post
    ...option in early 2020 and eventually replace the existing version of PubMed.  Key features This new version... for getting a quick summary of papers before investing the time to read them. Organizations: Accounts...AI-backed literature search developed by the Allen Institute for Artificial Intelligence. Semantic Scholar ...
  8. A Guide to Designing a Scientific Poster: Content, Layout, and More

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    Blog Post
    ...You’ve done great research and made interesting discoveries. You’ve analyzed the data and generated beautiful...should be easily navigable and efficient; your questions, data, and conclusions should be clearly identified...spacing between them so that they are easily distinguished. The UCLA Library offers some Powerpoint based...
  9. Open Resources and Plasmid Tools For Studying C. elegans

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    Blog Post
    ...highlighted new tools but also included time for questions and a group discussion on the best strategies ... the Arizona State University (ASU) Biodesign institute developed a 3’UTR database specifically for C.... to activation sequences upstream of genes to stimulate expression (Wang et al., 2016). In 2018, the lab...
  10. Mouse Modeling, Part 1: Genetically Engineered Mice

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    Blog Post
    ...include Swiss Webster and Harlan (Hsd) National Institutes of Health (NIH) Swiss. Genetically engineered...injection of a targeting vector alone, some challenges still exist. Nucleases may cause off-target effects on...the transgene in specific cells or under certain stimuli. Cre recombinase catalyzes the recombination of...
  11. 6 Tips for Grant Writing

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    Blog Post
    ...of expertise, equipment, or excellence of the institution). Likewise, if you’re staying in the same lab... applying for smaller grants from within your institute or a private funding body. Success breeds success...proof-of-principal study were very helpful in assisting me with applications for much larger fellowships...
  12. Illuminating Epigenetics with A FRET Based Biosensor

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    Blog Post
    ...paternal grandmothers who experienced famine while still in their mother's womb passed on a trait to their...grandchildren; in this study,epigenetic changes were statistically significantly associated with reduced life-span...hybridization, methylation-sensitive restriction enzyme digestion, DNA adenine methyltransferase identification,...
  13. The AAVantages of AAV in CRISPR Screens

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    Blog Post
    ...AAV and lentivirus have low immunogenicity, AAV still beats lentivirus. In mice, AAV is almost entirely...high degree. This is particularly helpful when investigating tissue-specific diseases, as you can target ...doi.org/10.1038/s41596-022-00700-y Hanlon, K. S., Kleinstiver, B. P., Garcia, S. P., Zaborowski, M. P., Volak...
  14. PCR Applications for Copy Number Variation Assays

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    Blog Post
    ... In that case, an RQ value of one (or, more realistically, between 0.80-1.20) would mean you have one ...each reaction, math happens (this time, Poisson statistics), and the readout gives an absolute value of ...hg0721s80 Colborn JM, Byrd BD, Koita OA, Krogstad DJ. Estimation of copy number using SYBR Green: confounding ...
  15. No Llamas Required - Synthetic Nanobodies Against Membrane Proteins

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    Blog Post
    ...large heavy chains and two small light chains that stick out to form the “arms” holding the highly variable...the mRNA molecule, forming a ribosome complex consisting of the translated protein (sybody), ribosome,...constructed, they are used to produce a phage library consisting of phages that display the candidate sybodies...
  16. Hot Plasmids: Summer 2025

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    Blog Post
    ...you’re currently using mVenus or mCitrine, or if existing yellow fluorescent proteins just haven’t met your.... The team used these libraries to analyze pre-existing heterogeneity of hematopoietic stem cells and ... S., & Rodriguez-Fraticelli, A. E. (2025). Pre-existing stem cell heterogeneity dictates clonal responses...
  17. Viral Vectors 101: Voltage Indicators

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    Blog Post
    ...sensing component, which separates them into two distinct categories detailed below. Voltage Sensitive Domain...fluorescence all have room for improvement. These sensors still have many useful applications, though, and if you...this two-part fluorescent system, and rhodopsin still functioning as the voltage sensor. FP-rhodopsin ...
  18. 10 Basic tips for mammalian cell culture

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    Blog Post
    ... Khan Khilji, a PhD student at the Max Planck Institute of Colloids and Interfaces. Here are some tips...wiped with 70% ethanol immediately. Finally, avoid sticking pipettes into solution bottles directly, rather...soon be joining her PhD lab at the Max Planck Institute of Colloids and Interfaces. Sana is particularly...
  19. Cloning Mammalian Cells with the Agarose Method

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    Blog Post
    ...a minute, when it is only warm but not hot- and still liquid- it is rapidly poured onto the middle of ...individual cell clones with different expression characteristics from a population of transfected clones. The...two 48-well plates of clones) which enables investigators to identify specific clones with desirable properties...
  20. Plasmids 101: Knockout/Knock-In Plasmids

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    Blog Post
    ...One of the most powerful strategies to investigate a gene's function is to inactivate, or "knockout",...(Figure 4). When recombination occurs, the gene still functions normally because one of its exons has ...are located in intronic regions, this gene will still be expressed. You'd first screen for this specific...
  21. Plasmids 101: Optimizing Plasmid Yields

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    Blog Post
    ...handy guide from OpenWetWare for a more extensive listing of common E. coli strains. Increase the volume ..., based on determining the cell density or by harvesting and miniprepping at various time points. Measuring...Bacterial Transformation Learn How to Perform a Diagnostic Restriction Digest Additional Resources Sigma-Aldrich...
  22. CRISPR 101: Mammalian Expression Systems and Delivery Methods

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    Blog Post
    ...vector Promoter driving Cas9 expression can be constitutive or inducible. U6 promoter is typically used ...will want to invest some time in optimizing and testing the efficiency of CRISPR delivery. There are a ... at Addgene that have been published as CRISPR testing tools: Traffic Light Reporter System: Can evaluate...
  23. Transgenic Organisms, Cas9 Gene Drives, and Appropriate Safeguards

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    ...Wyss Technology Development Fellow at the Wyss Institute and Harvard Medical School. Scientists making ...efforts to develop formal guidelines to answer this question. Until then, using multiple confinement strategies...effort to implement (depending on the species in question), why not use them whenever applicable?Against...
  24. Viral Vectors 101: The Retroviral Lifecycle

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    Blog Post
    ...its first steps! However, retroviral vectors can still direct the translation of proteins because they ...and transduction by vectors (which we sometimes still call “infection” as a shorthand, although it is ... the viral RT protein (Faras et al., 1973). Interestingly, retroviruses are generally only “pseudodiploid...
  25. INTEGRATE: Bacterial Genome Engineering Using CRISPR-Transposons

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    Blog Post
    ...bp target-site duplication (TSD), a hallmark characteristic of the Tn7-family of transposons. Insertion...(Fig. 3), multiplexed insertions into multiple distinct targets could be achieved (Vo et al., 2020). VchINT... editing. Leveraging a unique marriage between distinct biological elements, CRISPR-transposons excel ...
  26. Isolating Genomic Regions of Interest with the CRISPR System

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    Blog Post
    ...specific genomic region using the CRISPR system, consisting of dCas9 and targeting gRNA, to identify molecular...vitro" form. In this form, the CRISPR complex, consisting of a recombinant dCas9 protein and synthetic ...2017). This upregulates expression of IGF2, a characteristic of many human malignancies. Additionally, the...
  27. Deep Dive: Fixing and Permeabilizing for Immunofluorescence

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    Blog Post
    ...ll prevent binding to any target protein that is still on the inside of the cell. However, assuming you...hidden epitopes. However, keep in mind that you will still contend with many of the same drawbacks to each ...early steps don’t even involve antibodies, they are still critical to the outcome of your IF experiment and...
  28. CRISPR 101: Ribonucleoprotein (RNP) Delivery

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    Blog Post
    ...to directly deliver a ribonucleoprotein (RNP), consisting of the Cas9 protein in complex with a targeting...PEG) mediated transfection of protoplasts and biolistic bombardment of immature embryos (Liang et al. ... to perform, often show low efficiency, while biolistic bombardment, which can have high efficiency, requires...
  29. CRISPR Antimicrobials

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    Blog Post
    ...recolonize the niche, reducing the chance of an opportunistic infection like for organisms like C. difficile...Yosef et al.’s proof-of-concept work targeted two distinct beta-lactam resistance genes, again with very ...PubMed Central: PMCID PMC4466736. 5. Ando, Hiroki, Sebastien Lemire, Diana P. Pires, and Timothy K. Lu. “Engineering...
  30. Interview: Hodaka Fujii on enChIP, New CRISPR Tools, and More

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    Blog Post
    ...technologies. The locus-specific ChIP technologies consisting of iChIP and enChIP are recent examples. We also...University School of Medicine), Europe (Basel Institute for Immunology), and Japan (University of Tokyo...early research career. I've found that research institutes in different places have very different cultures...
  31. Fluorescent Proteins 101: Green Fluorescent Protein (GFP)

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    Blog Post
    ...Fluorescent Protein? GFP is a ~27 kDa protein consisting of 238 amino acids derived from the crystal jellyfish...A. Victoria and expressed in any organism while still maintaining fluorescence. The protein structure,...cytometry that separates mixtures of cells into distinct populations based on fluorescent signal. Thus,...
  32. Negotiating Work and Life: How to Find the Joy

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    Blog Post
    ...tactics to plan your work and make this happen. Be realistic and: Your co-workers will learn to work within...tasks – try to resist the impulse to control by insisting things always be done your way. Be patient with...help you do your job better. #8 Thou shalt enthusiastically foster independence Your partner can make ...
  33. Twenty Years of Sharing: Addgene's Viral Vector Service

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    ...available to researchers around the world. While we still offer many resources for producing vectors from ...vectors are not as easy to ship as plasmids, they still have a global reach. From 2016–2023, we shared 93,491...difficult as it may be to find answers to such questions, Addgene is deeply interested in pursuing them...
  34. Antibodies 101: The Four ELISAs and When to Use Them

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    ...numerous fields including research and development, diagnostics, drug discovery, and food safety.  Part of the...antibody and the capture antibody must bind to distinct, non-overlapping epitopes so that they do not ...is non-specific binding or false positives.  If testing a recombinant protein, especially one with tags...
  35. Hot Plasmids - August 2020

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    ...transcription of the mCitrine gene. mCherry is constitutively expressed. Cells are then cultured and FACS...cells(hPSCs), Lindy Barrett’s lab at the Broad Institute developed fluorescently labeled piggyBac vectors...CRISPR/Cas Toolkit for plants includes 95 plasmids consisting of CRISPR/Cas nucleases, base editors, gRNA backbones...
  36. Plasmids 101: Plasmid Incompatibility

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    ...replication, the negative regulation system cannot distinguish between the different plasmids. The concentration... plasmids from the bacterial pathogens Yersinia pestis, Agrobacterium tumefaciens, and Bacillus anthracis...) Curing of four different plasmids in Yersinia pestis using plasmid incompatibility. Letters in Applied...
  37. CRISPR-based Genome Editing Systems For Editing in E. coli

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    Blog Post
    ...Shanghai Institute of Biochemistry, Chinese Academy of Sciences. He joined Shanghai Institutes for Biological...genetic and biochemical mechanisms behind their distinct phenotypes and to design a new generation of engineered...
Showing: 721 - 760 of 1054 results