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Showing: 481 - 500 of 1010 results
  1. Expanding the Targeting Scope and Editing Efficiency of Adenine Base Editors

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    Blog Post
    ... adenine base editor Lower-stringency PANCE, followed by higher stringency PACE, resulted in the evolution...which results in less overall dilution and less stringent phage selection. Figure 2: Phage-assisted...base editors? Targeted evolution of naturally occurring enzymes and functional domains speed up the development...
  2. Antibodies 101: Isotypes

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    Blog Post
    ...immune response. There are three main pathogen clearing functions or effector functions of the constant...each of the isotypes. IgM This isotype is produced during a primary immune response because all B cells begin...found in tissues. IgG is the predominant isotype during a secondary immune response, which is when the ...constant domains. This switching helps B cells adapt during the course of an immune response since it also ...
  3. Fluorescent Proteins 101: Luciferases

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    Blog Post
    ...expressing luciferase Luciferase reporter assays for monitoring gene regulation Since firefly luciferase was ...no photobleaching) but provides flexibility by pairing the luciferase with a variety of fluorescent proteins...light is only produced if a binding interaction brings the two luciferase components together. A similar...characteristic light. However, if a protein interaction brings the fluorescent protein close enough, energy is...
  4. Viral Vectors 101: Viral Vector Elements

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    Blog Post
    ...S.H., Varmus H.E. Retroviruses. Cold Spring Harbor (NY): Cold Spring Harbor Laboratory Press; 1997. Principles...ITRs are perfectly symmetrical to allow for this pairing to occur. Like LTRs, the ITRs define the limit ... supplied by the production cell line (HEK-293) during production. Fun fact: There are 57 human adenovirus...
  5. Viral Vectors 101: Biosensors

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    Blog Post
    ...expanded for multiplexed imaging for advanced monitoring of different factors, in different or the same...stimuli and as well as changes in cellular dynamics during so-called housekeeping activities.     ...cell (sub)types for expression and downstream monitoring. Nervous about making a virus for your biosensor...Biosensors for Neurotransmission and Neuromodulation: Engineering and Applications. Frontiers in Cellular Neuroscience...
  6. Developing a cold tolerant E. coli using specialized chaperones

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    Blog Post
    ...milk processing, fruit juice clarification, meat tendering, and oligosaccharide synthesis. A major incentive...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...synthetic biology experiment Read our Genome Engineering Guide ...
  7. CRISPR 101: Non-Homologous End Joining

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    Blog Post
    ...advantage to using the CRISPR/Cas system for genome engineering is the fact that Cas9 can be easily programmed...initial cut, the next steps in the process involve repairing chromosomal DSBs. It is important to know that...then ligates compatible DNA ends together, thus repairing the break. This is a simplified, streamlined ... ligation step determines how ends are resolved during nonhomologous end joining. Nat Commun 5: . https...
  8. Pooled CRISPR Libraries Offer Genome-Wide Control for Large-Scale Functional Screens

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    Blog Post
    ...rely on genetic engineering to optimize humans for CRISPRi and CRISPRa.” Before considering the use of pooled...that they could be used by people with little bioengineering expertise? “This is the next step in high-throughput...activating any human gene, go to http://sam.genome-engineering.org/. Crystal structure of Cas9 in complex with...
  9. Deep Dive: qPCR

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    Blog Post
    ...to double-stranded, and finally, drop once more during a final temperature increase. If there is a single...should only be one peak, as everything should be denaturing or annealing at the same temperatures. If there.... Flipping your experimental and control values during analysis can allow you to see this fold change ... vol. 1160, DOI 10.1007/978-1-4939-0733-5_3, © Springer Science+Business Media New York 2014Bustin S; ... as Reference for qPCR Gene Expression Analysis During iPS Reprogramming Process. Sci Rep 8, 8716 (2018...
  10. Rosella: A Fluorescent pH-Biosensor for Studying Autophagy

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    Blog Post
    ... Mark Prescott. This system was developed for monitoring and analyzing autophagy of cytosol and organelles.... Autophagy is then induced and quantified by measuring the amount of radioactivity in the culture supernatant...autophagy markers. It’s particularly useful for comparing bulk autophagy vs. mitophagy, the targeted autophagy...Cuervo, A. M., & Seglen, P. O. (2007). Methods for Monitoring Autophagy from Yeast to Human. Autophagy,3(3)...
  11. CRISPRainbow and Genome Visualization

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    Blog Post
    ...with the previously established physical map. In comparing pairs of targets ~2 Mbp apart, they noticed that... magenta, depending on the hairpin combination bringing the total number of individual colors to 6. A ...Addgene. 4. Kiani, Samira, et al. “Cas9 gRNA engineering for genome editing, activation and repression... Mary Gearing...
  12. Hot Plasmids - March 2020 - base editors, GEVI, MoClo, and optogenetics

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    Blog Post
    ...editors at Addgene. Levy et al., Nature Biomedical Engineering, 2020. PubMed PMID: 31937940. Detection of neural... prosthetic group PCB, PhyB and PIF6 dimerize, bringing each terminus of Cre together to restore Cre activity...to red light induces PhyBΔ and PIF6APB binding, bringing the two halves of Cre together. Image from Eisenhoffer...as well as in different stages of development, ensuring the breadth and versatility of this tool. Find...
  13. What's New in CRISPR - November 2021

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    Blog Post
    ... system. The CasMINI system was developed by engineering the Cas12f scaffold gRNA and making strategic...the gRNA scaffold through five rounds of gRNA engineering.  They did not modify the Cas12f1 enzyme. The...cargo RNA, and fusogen in a modular system for delivering gene editing tools into cells. Image adapted ... within the FAH gene was precisely corrected, restoring expression in the liver.  Read the paper in Nature...
  14. Viral Vectors 101: An Introduction to AAV

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    Blog Post
    ...vector into the culture medium during adeno-associated virus manufacturing." Human gene therapy 21.10 (2010...researchers speak about AAVs, they are actually referring to rAAVs. ITRs and serotypes The names of AAVs...different ages." Retinal Degenerative Diseases. Springer International Publishing, 2016. 501-507. PubMed...
  15. All in a Twist: dsRNA

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    Blog Post
    ...are typically contained within the mitochondria, barring a loss of mitochondrial integrity that would release...stranded structure produced is known as an R-loop. During transcription, RNA is synthesized from a DNA template...transcription of thousands of genes is constantly occurring throughout a single cell, so these nucleic acid...DNA hybrids Persistent RNA:DNA hybrids that arise during transcription are typically recognized by RNase...
  16. Enhancing CRISPR Targeting Specificity with eSpCas9, SpCas9-HF1, & HypaCas9

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    Blog Post
    ...effects” have included using a Cas9 nickase variant, lowering Cas9 expression, and truncating gRNA sequences...decrease the off target effects of CRISPR/Cas9 by altering the nuclease activity of the Cas9 nuclease itself...excited to see continued improvements in genome engineering! References 1. Slaymaker, Ian M., et al. "Rationally...Plasmids Browse our CRISPR Guide Pages Find Genome Engineering Resources ...
  17. New Tool for Lineage Tracing: The ClonTracer Library

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    Blog Post
    ... populations resistant to drug treatments arise during treatment or are preexisting in the parent population... drug treatment and that these are selected for during the treatment process. The authors went on to show... “I spend a lot of time packing, shipping, and sharing protocols one by one,” and she is excited to deposit...Addgene because it is a “really great way of broadly sharing these kinds of reagents.” Here at Addgene, we’re...
  18. Career Coaching for Scientists: Why and Where Do I Find One?

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    Blog Post
    ...infrastructure are not always as effective in mentoring for this transition. Second, a coach will help...through on the actions you committed to. Finally, hiring a paid coach will make you take the experience ...Joanne's Reddit AMA I am a strong advocate for peer mentoring, but volunteer mentors are only able to go so ...areas of specialty from leadership development to mentoring for women and under-represented minorities. Her...
  19. Fluorescent Proteins 101: Introduction to FRET

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    Blog Post
    ...Quantification of Förster resonance energy transfer by monitoring sensitized emission in living plant cells." (... for studying protein-protein interactions by measuring the change in FRET efficiency, from which conclusions...cascades, quantify mechanical tension (a molecular “spring”) (Meng et al., 2008), and monitor neuronal activity...Sustarsic and Kapanidis 2015), which may lead to monitoring of these processes in live animals (Hirata and...
  20. Popular Retroviral Vectors and Their Uses in Scientific Research

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    Blog Post
    ...Therefore they make excellent tools for genetic engineering. There are several different viral vectors to... and Adeno-associated virus (AAV). If you are wondering which virus fits you experiments best have a look...retroviral vectors can regulate gene expression by delivering shRNA or miRNA. The ever expanding CRISPR field...our CRISPR reagents. Please check www.genome-engineering.org for the most up-to-date information. Check ...
Showing: 481 - 500 of 1010 results