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Showing: 221 - 240 of 725 results
  1. All in a Twist: dsRNA

    Type
    Blog Post
    Published
    Feb. 2, 2023, 2:15 p.m.
    ...process. These transcription-coupled R-loops are transient in nature and will dissociate when gene transcription... respond accordingly. While not perfect, these sensing systems work to distinguish between RNA of cellular...viral origin and respond appropriately. When these sensing systems fail, diseases and steep cellular consequences...or anticipating this response are important considerations when using these reagents. RNA:DNA hybrids...
  2. Human Germline Editing Using CRISPR

    Type
    Blog Post
    Published
    Aug. 10, 2017, 2:19 p.m.
    ...clinical applications could be considered. It is important to consider the question of broader applicability...disease prevention. However, it is important to consider that already-tested CRISPR alternatives are applicable...many more experiments are needed before we can consider clinical applications for germline editing. Although...
  3. Plasmids 101: Golden Gate Cloning

    Type
    Blog Post
    Published
    Aug. 27, 2015, 2:30 p.m.
    ...vector + insert may spontaneously religate, this transient construct retains functional Type IIS sites and...be scarless. Golden Gate assembly is also less expensive than many commercial cloning methods. Golden ...amenable to "domestication", you might want to consider using an alternative method like Gateway cloning...cloning or Gibson assembly. Another important consideration is the design of flanking overhangs. Although...
  4. Working with Nuclear Receptors

    Type
    Blog Post
    Published
    July 15, 2014, 4:03 p.m.
    ... multitude of therapeutic indices, including hypertension, cancer, diabetes, cardiovascular disease, cholesterol...receptor research, and has generated a set of comprehensive datasets that collectively address many important...of coregulators in HeLa cells was the first comprehensive analysis of the interactome of these key regulatory... between laboratories. The development of the transient transfection platform for assaying transcriptional...
  5. CRISPR Methods for Bacteria: Genome Engineering, CRISPRa, CRISPRi, Base Editing, and More

    Type
    Blog Post
    Published
    Sept. 28, 2020, noon
    ... in E. coli. The system available from Addgene consists of two plasmids: pCas9: carries Cas9 and chloramphenicol... enable gRNA-directed transposition. INTEGRATE consists of four major components including (1) a CRISPR... ability to multiplex repression. Using a Tet responsive promoter to drive expression of a catalytically...and developed new, more tightly controlled, Tet responsive promoters to avoid leaky activation of the system...technology can have on the human microbiome. You can consider the microbiome as a collection of organisms, their...
  6. Hot Plasmids and Viral Preps - March 2021

    Type
    Blog Post
    Published
    March 23, 2021, 1:15 p.m.
    ...categories: probes and editors. A probe array may consist of at least two sensor modules targeting a specific...auxin inducible degron (AID) system has been extensively used in C. elegans since 2015 to conditionally... which can be easily visualized.  The tool-kit consists of highly useful vectors compatible with Gibson.... Check out the new additions.  Image calcium transients in PV interneurons with AAV-S5E2-GCaMP6f, now...
  7. Design Tips for Prime Editing

    Type
    Blog Post
    Published
    Jan. 23, 2025, 2:15 p.m.
    ...a prime editing guide RNA (pegRNA). The pegRNA consists of a CRISPR gRNA extended to include a primer ... BioRender.com. The first base of the 3′ extension of the pegRNA should not be C. A C base is speculated...al., 2014). Figure 3: pegRNAs whose 3′ extension begins with a C base can cause unwanted base pairing...influence the success of your prime edit. If possible, consider following these suggestions: Edit the PAM along...
  8. 7 Simple Strategies to Resolve Conflicts with Difficult Supervisors

    Type
    Blog Post
    Published
    Jan. 21, 2015, 1:30 p.m.
    ...time moaning about their troubles, Silent or unresponsive clams, who seem to ignore you and your questions...communicate their ideas confidently while also considering the needs of other people. Some students and ...for it. Do not take criticism personally or get defensive. Look at the problem from their viewpoint, and... you even when you meet in person (silent or unresponsive clam), you will probably need support from your...
  9. PCR Applications for Copy Number Variation Assays

    Type
    Blog Post
    Published
    April 26, 2022, 1:15 p.m.
    ...most starting materials, and is not particularly sensitive. The fluorescent signal can be affected by AT-...Image courtesy of: Ygonaar    Taqman is more sensitive than Sybr, with less background noise, and is ...amplified in the same reaction. Taqman’s increased sensitivity allows for a more confident determination of ...approach is right for your experiment. You’ll have to consider:  Resources needed Most molecular biology labs...
  10. Antibodies 101: Conventional vs Spectral Flow Cytometry

    Type
    Blog Post
    Published
    Aug. 3, 2023, 1:15 p.m.
    ...which spectral flow cytometry requires special considerations. Conventional flow cytometry During conventional...cytometry for a given experiment, it is important to consider how many parameters you want to use in a given...and spectral flow cytometry, it is important to consider the expression levels of the markers you are including...molecules conjugated together) can be especially sensitive to batch effect. For example, when a PE molecule...
  11. The AAVantages of AAV in CRISPR Screens

    Type
    Blog Post
    Published
    Feb. 4, 2025, 2:15 p.m.
    ...gotten larger, easier, and more comprehensive thanks to the consistent development and improvement of ... for each experiment. Additional considerations One of the downsides to using AAV is the limited packaging...
  12. PRIDICT: Predicting Efficiencies of Prime Editing Guide RNAs

    Type
    Blog Post
    Published
    June 25, 2024, 1:15 p.m.
    ...The pegRNA consists of a target-complementary spacer, a scaffold sequence, and an extension sequence containing...screens such as PRIDICT/PRIDICT2.0 provide valuable insights into pegRNA editing efficiencies for specific ...experiments, thus saving you time, sweat, and money on extensive optimization efforts. This holds true for any ...
  13. Plasmids 101: Protein Expression

    Type
    Blog Post
    Published
    June 7, 2018, 1:17 p.m.
    ...Overall the general strategy for protein expression consists of transfecting cells with your DNA template of... Mammalian systems can express proteins both transiently or through stable cell lines. Both methods produce...recombinant proteins from plants however can be expensive and time consuming as plant tissues themselves...applications. Cell-free expression systems however, are expensive and very technically challenging to use. Alyssa...
  14. When is a Monomer not a Monomer? The Top Three Ways Your Favorite Fluorescent Protein Oligomerizes in Cells

    Type
    Blog Post
    Published
    April 19, 2016, 2:30 p.m.
    ...all seriousness, EGFP/GFP has a real nontrivial propensity to noncovalently dimerize. That means that your...to not produce artifacts in your experiments. Considerable effort has gone into making FPs monomeric, yet...actually monomeric, at least in practical terms. The propensity of a particular type of molecule to form a dimer...study of GFP-based FRET, with application to intrinsically unstructured proteins. Protein Sci, 2007. 16...
  15. Transgenic Organisms, Cas9 Gene Drives, and Appropriate Safeguards

    Type
    Blog Post
    Published
    May 22, 2015, 4:58 p.m.
    ...RNA-guided gene drives in the summer of 2014 (after extensive discussions with biosecurity experts, ecologists...gene drives intended for eventual release should consider building an appropriate immunizing reversal drive...not use them whenever applicable?Against this, consider the cost of an accidental release. Science relies...trusted to handle such a powerful technology responsibly. An accidental release would be particularly ...
  16. Tips for Using BLAST to Verify Plasmids

    Type
    Blog Post
    Published
    May 29, 2014, 1:29 p.m.
    ...DDBJ, and PDB sequences and may be the most comprehensive for searching. Timesaving Tip #1: If you know...searches! Now, before you click the BLAST button, consider the Program Selection parameter, as this will ...the alignment at a more distal amino acid. We consistently run our blastx searches with the “Low complexity...101: How to Verify Your Plasmid Plasmids 101: An Inside Look at NGS Plasmid Quality Control Learn about...
  17. Isolating Genomic Regions of Interest with the CRISPR System

    Type
    Blog Post
    Published
    May 30, 2019, 12:44 p.m.
    ...specific genomic region using the CRISPR system, consisting of dCas9 and targeting gRNA, to identify molecular...isolation of a specific genomic region was an intensive process. One method required insertion of a recognition...vitro" form. In this form, the CRISPR complex, consisting of a recombinant dCas9 protein and synthetic ...high-affinity purification. This system is both highly sensitive and specific and allowed the Xu lab to identify...
  18. The Effect of COVID-19 on Liu Lab Plasmid Requests From Addgene Data

    Type
    Blog Post
    Published
    July 16, 2020, 1:15 p.m.
    ...data with a 7-day rolling mean gave us a crude insight into the magnitude of the effect COVID-19 had on...holiday effects. Based on these observations, we considered the following (noiseless) model for our data:...factor 𝜙z if t is during event z. The "events" we considered for our model were weekends, Christmas/New Years...Europe. To improve the stability of our model, we considered only the 10 papers with more than 10 unique order...
  19. An Introduction to Adenovirus

    Type
    Blog Post
    Published
    Oct. 3, 2023, 1:15 p.m.
    ...translation. Its genome consists of “early” (E) and “late” genes, and the transition between early and late...length. Human adenovirus type 5 (hAdV-C5) can be considered the prototype, although many viruses infecting...the majority of adenoviral vector expression is transient due to the fact that AdV surface proteins (especially...
  20. AAVs in Retinal Gene Therapy

    Type
    Blog Post
    Published
    July 31, 2018, 12:55 p.m.
    ...abandoned early on due to its considerable immunogenicity and its transient expression. LV results in long...been shown to to transduce the retina but only transiently. However new viral vectors capable of providing...disease-causing genes, including the RPE65 gene responsible for an autosomal recessive, severe, childhood-onset...
Showing: 221 - 240 of 725 results