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Showing: 151 - 180 of 672 results
  1. Developing a cold tolerant E. coli using specialized chaperones

    Type
    Blog Post
    Published
    Jan. 28, 2020, 2:35 p.m.
    ...insoluble granules. We overcame this problem by engineering a plasmid which contained cold tolerant chaperones...editing for psychrophilic systems as well as engineering and regulating psychrophilic recombinant proteins...community-centric science, our team has continuously engaged with a variety of stakeholders from industrial ...harmonious progress.     We’re always delighted to engage with potential collaborators and interested audiences...synthetic biology experiment Read our Genome Engineering Guide ...
  2. Enabling Precision Functional Genomics with the Target Accelerator Plasmid Collection

    Type
    Blog Post
    Published
    May 11, 2017, 2:30 p.m.
    ...algorithms, such as SIFT or PolyPhen to approach this challenge, using attributes of cancer variants such as evolutionary...to making cancer precision medicine a reality. Challenges for cancer variant characterization For many ...validation experiments. But, there have been two huge challenges preventing us from testing this hypothesis: ...Accelerator Plasmid Collections To overcome this first challenge, we’ve developed the Broad Institute Target Accelerator...cancer variants To overcome the second major challenge, we developed assays to test large numbers of ...
  3. Advice for Starting a Biotech Company from a Grad Student turned Entrepreneur

    Type
    Blog Post
    Published
    July 10, 2014, 7:17 p.m.
    ...Sample6 still leverages the core engineering and scientific concepts to engineer bacteriophages and use those... As a biomedical engineer and scientist, I like to envision that my research will have a direct impact...himself from the idea of starting a company around engineered bacteriophages. He decided to quit his "safety...his co-founders raised $6 million. The biggest challenge during this time was learning to communicate effectively...
  4. CRISPR 101: Multiplex Expression of gRNAs

    Type
    Blog Post
    Published
    Sept. 10, 2020, 11:45 a.m.
    ...recombineering-based MAGE (Multiplex Automated Genome Engineering) technology. pMA7CR_2.0 expresses lambda Red ...References 1. Maddalo, Danilo, et al. “In vivo engineering of oncogenic chromosomal rearrangements with ..., et al. “Multiplex CRISPR/Cas9-based genome engineering from a single lentiviral vector.” Nucleic Acids.... Sakuma, Tetsushi, et al. “Multiplex genome engineering in human cells using all-in-one CRISPR/Cas9 vector...plasmids from this paper at Addgene. 5. Tsai, Shengdar Q., et al. “Dimeric CRISPR RNA-guided FokI nucleases...tools for efficient germline and somatic genome engineering in Drosophila.” Proceedings of the National Academy...
  5. Antibodies 101: Affinity Reagents

    Type
    Blog Post
    Published
    April 14, 2022, 1:15 p.m.
    ...are ~27kD engineered fusion proteins similar to a Fab fragment but created through engineering instead ...reduced-in-size options often have reduced binding strength, half-lives, and/or specificity as well. They’... repeat proteins, or DARPins, are genetically engineered small affinity proteins, around 14-15 kDs in ...produced in E. coli, and are both soluble and easily engineered.  Monobodies are ~10kD synthetic binding proteins...
  6. Transferable Skills Guide: Problem Solving

    Type
    Blog Post
    Published
    Nov. 30, 2021, 2:15 p.m.
    ... more about how you approach new challenges.     Know your strengths! Research experience presents ample...matter of applying that framework to the myriad challenges we encounter. As you spend time in a lab learning...yourself if you missed any important details. Or challenge yourself to think of more creative solutions. ...employer that you are well equipped to work through challenges from day one in your new position. Of course,...
  7. Open Resources and Plasmid Tools For Studying C. elegans

    Type
    Blog Post
    Published
    July 18, 2019, 12:55 p.m.
    ...elegans Neuronal Gene Expression Map & Network (CeNGEN) The CeNGEN goal is to establish a comprehensive gene...characterize the transcriptome. The first data release for CeNGEN is planned for August 15th, 2019. For more information...information about the aims and approach of CeNGEN, check out their publication.   3’UTRome The 3’UTRs of...popular! References Hammarlund, Marc, et al. "The CeNGEN Project: The Complete Gene Expression Map of an...
  8. Corralling and Cornering the Goldilocks Antibody

    Type
    Blog Post
    Published
    Aug. 9, 2022, 1:15 p.m.
    ...emphasizing the antibody’s specificity. Strength and accuracy The strength is based on binding specificity and...expression constructs to be conveniently modified and engineered.   Fig. 1: Antibody production methods... developed a criterion that includes accuracy, strength, and reproducibility. We test the antibodies on... negative control also determines the signal’s strength. Exposure time is the amount of time the sample...
  9. Viral Vectors 101: Calcium Sensors

    Type
    Blog Post
    Published
    Aug. 10, 2023, 1 p.m.
    ... sensor (GEX), where one wavelength changes with Ca while another wavelength is insensitive. Additional...requiring only a simple measurement. However, single wavelength measurements are more susceptible to artifacts...calcium reporter derived from troponin C. It is engineered with a reduced number of calcium binding sites...Cre-dependent expression. These sensors have also been re-engineered to measure changes in calcium specific to the...
  10. Hot Plasmids and Viral Preps - March 2021

    Type
    Blog Post
    Published
    March 23, 2021, 1:15 p.m.
    ...Here's what you'll find in this post: Epigenetic engineering with single-pot assembly Tracking cell-cell interactions...New items from the viral service Epigenetic engineering with single-pot assembly By Eric Perkins Though...epigenetic researchers custom design their own engineering plasmid tools in about a week. Taking advantage...H3K27me3), a linker between these modules (linker length can and should be varied as it can have important...in AAV1!  New ready-to-use AAV prep from Hongkui Zeng's lab are available for dual expression of cytoplasmic-tdTomato...
  11. Plasmids 101: Modular Cloning

    Type
    Blog Post
    Published
    March 12, 2024, 1:15 p.m.
    ...Most things in biology are not so simple, and engineering complex cellular behaviors requires making complex...output, etc., which can support a larger cellular engineering goal, several of which are described below. Multigene...sometimes many times), and isolated afterwards. To engineer these production pathways, MoClo has been used... an array of distinct goals within metabolic engineering, synthetic product production, and gene editing...  References and Resources References Weber E, Engler C, Gruetzner R, Werner S, Marillonnet S. A modular...
  12. PCR Applications for Copy Number Variation Assays

    Type
    Blog Post
    Published
    April 26, 2022, 1:15 p.m.
    ...fluorescent signal can be affected by AT-rich DNA and the length of the amplicon and it has a higher rate of false...background noise, and is not affected by AT content or length of the amplicon. As the probes can have several...available, ddPCR may be a better option for more challenging cases.  Price point If budget is a concern...confounding by AT-rich DNA and by variation in amplicon length. Am J Trop Med Hyg. 2008 Dec;79(6):887-92. PMID...Abu Bakar, S., AbuBakar, S., Hollox, E. J., & Boon Peng, H. (2015). A comparison of assays for accurate ...
  13. Chromoproteins: Colorful Proteins For Molecular Biology Experiments

    Type
    Blog Post
    Published
    Feb. 4, 2020, 2:15 p.m.
    ...infrared light to dissipate excess energy at wavelengths of low photosynthetic activity. This still allows...allows photosynthetically active wavelengths to reach zooxanthellae, the coral’s symbiotic dinoflagellates...Forster’s lab used codon optimization programs to engineer 14 chromoprotein sequences into E. coli BioBrick... Wistrand-Yuen, P., … Forster, A. C. (2018). Engineering a palette of eukaryotic chromoproteins for bacterial...bacterial synthetic biology. Journal of Biological Engineering, 12(1). https://doi.org/10.1186/s13036-018-0100...
  14. Google Forums Round Up: First Impressions of NgAgo

    Type
    Blog Post
    Published
    Aug. 4, 2016, 2:30 p.m.
    ...Lander, and Feng Zhang. "Development and applications of CRISPR-Cas9 for genome engineering." Cell 157.6...not perform functional tests. The newest genome engineer sharing the stage with much-lauded CRISPR-Cas9...cleavage (1). Both the CRISPR-Cas9 and NgAgo genome engineering methods have their own pros and cons (2). The...of a sunny day in Edinburgh.   References 1. Gao, Feng, et al. "DNA-guided genome editing using the Natronobacterium...
  15. SciComm: Taking Science to Elementary and Middle Schools

    Type
    Blog Post
    Published
    July 9, 2019, 12:52 p.m.
    ...and offered engaging examples of how understanding genetics is so timely.” Genome engineering, and many ... an authority in this area. What is genome engineering? How does CRISPR work? This section was essentially...computers and the internet before it, genome engineering technology is moving along much faster than it...much in the making. One of the exciting, and challenging, aspects of talking to 8th graders was the broad...
  16. Transferable Skills Guide: Identifying Your Transferable Skills

    Type
    Blog Post
    Published
    Jan. 11, 2018, 3:29 p.m.
    ...and projects. It is crucial to identify these strengths within yourself, and to demonstrate them to the...collaboration and fail to identify it as a personal strength until it is identified by another person. Similar...situations where you can learn more about possible strengths and weaknesses, and view everything as a learning...presents itself even outside of work, consider challenging yourself, take the opportunity, and discover ... strengths...
  17. Transferable Skills Guide: Creativity

    Type
    Blog Post
    Published
    Jan. 18, 2022, 2:15 p.m.
    ...to solve a problem. But how do you intentionally engage in a creative problem-solving process?  You may... needing to brainstorm with a team. One major challenge with these brainstorming sessions is avoiding ...you can, set aside time to prepare for future challenges. This doesn’t have to be time-consuming or even... keeping your science going throughout these challenging times.  Take a Break! If all else fails, one ... Originals how non-conformists move the world. Penguin Publishing Group. Day, F. (2019). Embrace your ...
  18. Proximity Labeling: A Powerful Tool for Protein Complex Purification and Proteomic Mapping

    Type
    Blog Post
    Published
    Dec. 2, 2019, 2 p.m.
    ...soluble and insoluble proteins, which can be a challenge for classic antibody based affinity purification...for your proximity labeling experiment! APEX: engineered ascorbate peroxidase that can rapidly biotin ...available, the Alice Ting Lab demonstrated that engineered ascorbate peroxidase (APEX), used as a genetic...Ramanathan et al., 2018). To develop RapID, scientists engineered a mutant BirA* from B. subtilis, termed BASU....PMCID: PMC4296904. Martell, Jeffrey D., et al. "Engineered ascorbate peroxidase as a genetically encoded...
  19. Multiple Plasmids at a Low Price: Kits from Addgene

    Type
    Blog Post
    Published
    Sept. 14, 2016, 2:30 p.m.
    ...BIOFAB Plasmid Set contain terminators of varying strengths centered within GFP/RFP bicistronic reporters ...required for eukaryotic systems and instead directly engages the ribosome for translational complex assembly...populations through time, Christopher Marx's lab has engineered and validated a new method called FREQ-Seq. This...proteins are composed of repeat segments that can be engineered to bind specific RNA bases. By swapping out these...2016): 895-899. Choudhury, Rajarshi, et al. "Engineering RNA endonucleases with customized sequence specificities...
  20. Hot Plasmids: Bacillus subtilis Libraries, iPSC Reprogramming, CRISPR Tools, & More!

    Type
    Blog Post
    Published
    Dec. 11, 2017, 2:02 p.m.
    ...Regulating telomere length with TZAP. Listen to the segment on regulating telomere length with TZAP Hot Plasmid...tools for plants. Special thanks to our sound engineer/producer, Eddy Page! Edward B. Page is a Digital...Production Specialist at Addgene. He is the audio engineer and producer for the Addgene Podcast.     Additional...
  21. 2021 Deck the Lab Winners!

    Type
    Blog Post
    Published
    Jan. 25, 2022, 2:15 p.m.
    ...🎄🎁🎅🤶🎄 pic.twitter.com/rDaEjxTNZX— Heng Chooi (@YitHengChooi) December 4, 2021   3rd Place: O! Beaker... Though 2021 had more than its fair share of challenges, the annual Deck the Lab Contest brought us smiles...Falcon Tube created by the team efforts of the Yit Heng Chooi Lab at the University of Western Australia...
  22. Plasmids 101: Repressible Promoters

    Type
    Blog Post
    Published
    Dec. 20, 2022, 2:15 p.m.
    ...  We’ll look at examples of both natural and engineered repressible promoters. Chemically repressible...transactivator components of the system have been engineered and improved. Takara’s “2nd generation Tet-Off...system is a positive repressible promoter, and was engineered from the cmt and cym bacterial operons. A chimeric... and repress pADH1 activity. Researchers have engineered pADH1 variants that are less sensitive to ethanol...Introduction and expression of genes for metabolic engineering applications in Saccharomyces cerevisiae.” FEMS...
  23. Easi-CRISPR: Generating Knock-In and Conditional Mouse Models

    Type
    Blog Post
    Published
    April 5, 2018, 12:42 p.m.
    ...Cre-dependent conditional alleles, has remained a challenge. Enter Easi-CRISPR: a method that harnesses the...template. Although effective, ivTRT may be more challenging for sequences with complex secondary structure... systems (ttA or rtTA) are between 1 to 2 kb in length. There are plenty of Addgene plasmid options for...conditional alleles by CRISPR/Cas-mediated genome engineering." Cell 154 (2013):1370-9. DOI: 10.1016/j.cell... a robust method for in situ germline genome engineering using CRISPR nucleases. Genome Biol. 19 (2018...
  24. Finding Your Perfect Job After University

    Type
    Blog Post
    Published
    Jan. 12, 2016, 3:30 p.m.
    ...become bored because I was not being mentally challenged. For these and other reasons, I started  looking...tuition fees had just gone up dramatically and, in England, you could not receive government loans to study...reason why I chose Australia was because it is an English speaking country with a strong economy and plenty...combination of genetic mutations. This is a particular challenge in pancreatic cancer where one drug does not work...while I’m based in London) does bring its own challenges. I’ve had to become skilled with technology like...
  25. Building Global Connections with the International Mentorship Program USA-EUROPE

    Type
    Blog Post
    Published
    Nov. 6, 2015, 3:30 p.m.
    ...PhD, achieving our career goals can be a real challenge. On top of that, in the midst of a rapidly changing...mentees with a broader, first-hand vision of the challenges and career opportunities that truly exist outside...was much more than that. I discovered that the challenges that I am facing in my career are common problems... that many others have faced yet, still, this challenge did not hinder them from advancing their careers...mentoring program extends its scope to the fields of Engineering, Economics, and Philology (in addition to Biomedicine...
  26. Podcast: A Malawian Professor's Path to Biotech Research

    Type
    Blog Post
    Published
    May 24, 2016, 2:30 p.m.
    ...University of Malawi where he focused on agricultural engineering through biotech. After graduating with a masters...Kingdom's PhD projects - HIV inhibitors, biofuels, challenges in Malawi, and more 23:45-28:07 : How Seeding...Seeding Labs here. Special thanks to our sound engineer/producer, Eddy Page! Edward B. Page is a Digital...Production Specialist at Addgene. He is the audio engineer and producer for the Addgene Podcast.     Additional...
  27. Alex Chavez on MD PhDs, CRISPR, Gene Drives, & More

    Type
    Blog Post
    Published
    Nov. 15, 2016, 3:30 p.m.
    ...the Wyss institute for Biologically Inspired Engineering. Alex is the first MD PhD we've had on the podcast...The Wyss Institute for Biologically Inspired Engineering and why Alex decided to work there. 13:22 - 22...of DNA and RNA.     Special thanks to our sound engineer/producer, Eddy Page! Edward B. Page is a Digital...Production Specialist at Addgene. He is the audio engineer and producer for the Addgene Podcast.     Additional...
  28. RNA Interference in Plant Biology: New Tools for an Old Favorite

    Type
    Blog Post
    Published
    Oct. 27, 2020, 1:15 p.m.
    ...Alternatively, endogenous miRNA precursors can be engineered to created artificial miRNAs. The processed miRNA...frequently used. Although similar, amiRNAs are engineered from endogenous precursors of microRNAs found...specific than long hpRNAs, they must be individually engineered and empirically evaluated for their gene silencing...using a fluorescent output to monitor RNAi, we engineered a positive selection reporter whereby survival...Gong B-Q, Guo Y, Xu L, Zhang X-N, Li J-F (2018) Engineering Artificial MicroRNAs for Multiplex Gene Silencing...
  29. Sequencing Options for CRISPR Genotyping

    Type
    Blog Post
    Published
    Oct. 4, 2016, 2:30 p.m.
    ...weighted by the position of the mismatch along the length of the gRNA given the stricter sequence requirement...cleavage assays to detect mutations triggered by engineered nucleases." G3: Genes| Genomes| Genetics 5.3 ...23934178. PubMed Central PMCID: PMC3782611. 8. Tsai, Shengdar Q., et al. "GUIDE-seq enables genome-wide profiling...detection of DNA double-stranded breaks induced by engineered nucleases." Nature biotechnology 33.2 (2015):...23503052. PubMed Central PMCID: PMC3651036. 15. Tsai, Shengdar Q., and J. Keith Joung. "Defining and improving...
  30. Addgene Stands with the Scientific Community

    Type
    Blog Post
    Published
    April 23, 2025, 1:30 p.m.
    ...and creativity in the face of funding challenges. By strengthening our commitment to collaboration and ...and increased tariffs present an unprecedented challenge to the scientific research ecosystem, not just...years to come. We Are Here to Help Despite these challenges, Addgene remains steadfast in our mission to ...
Showing: 151 - 180 of 672 results