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Showing: 211 - 240 of 245 results
  1. What's Your Organism? Expanding Genomic Tools via the NSF EDGE Program

    Type
    Blog Post
    ...beneficial for many systems. How the EDGE Program promotes scientific sharing The EDGE Program is designed...to study life’s innovations from anywhere in the tree of life.” Accepted proposals were required to present... arose in different branches of the evolutionary tree at least 6-7 times and on at least 2 separate continents...especially cardenolides which have been used to treat heart disease. Caterpillars that eat milkweed generate...Joshua Rosenthal) The Hawaiian bobtail squid has an extreme number of nerve cells and an unusually high level...
  2. Zhang Lab's CRISPR Frequently Asked Questions

    Type
    Collection
    ...sequence into a backbone that uses the human U6 promoter to drive expression, is it necessary to add a ... the start of my target sequence? The human U6 promoter prefers a 'G' at the transcription start site ...of the crRNA) is also expressed from a separate promoter. In the pre-processing form, the crRNA contains...will they also be targeted? The Cas9 cuts 3-4bp upstream of the PAM sequence. There can be some off-target...suggestions? The Zhang lab recommends using the Epicentre QuickExtract solution to perform this step to ...
  3. Deep Mutational Scanning with One Pot Saturation Mutagenesis

    Type
    Blog Post
    ...interest. A low primer-to-template ratio is used to promote annealing of one primer to each template. The PCR...restriction site, but nick opposite strands of DNA. Treating the plasmid with ExoIII and ExoI then fully degrades...by Wrenbeck et al but it’s likely that longer stretches of sequence could be used. However, a practical...assessing protein function on a massive scale." Trends in Biotechnology 29.9 (2011): 435-42. PubMed PMID...
  4. Zebrafish Plasmid Collection

    Type
    Collection
    ...plasmids with four promoters, six fluorophores, and empty vectors designed to streamline the production of...Zebrafish Society (IZFS) - An organization that promotes and advocates for zebrafish research in the international...
  5. An Introduction to Adenovirus

    Type
    Blog Post
    ...from a replicating adenovirus using native viral promoters. Mol Ther, 7(4), 526–534. https:/doi.org/10.1016...as other intracellularly-exposed proteins and downstream cellular events, all recruit strong innate and...
  6. Changing Labor Laws Bring Increased Postdoc Wages

    Type
    Blog Post
    ...help them navigate the scientific enterprise and promote their voices in driving changes in science. Follow...that salaries may even double. The University of Notre Dame sets no minimum, stating that while they recommend...
  7. Site Directed Mutagenesis by PCR

    Type
    Blog Post
    ... in mapping of regulatory elements (to mutate promoters/enhancers in reporter constructs), in functional...introduced anywhere in the plasmid (albeit at extremely low frequency), and these could interfere with...
  8. Transferable Skills Guide: Conflict Resolution

    Type
    Blog Post
    ...When you go on interviews or are looking for a promotion, have some solid examples of times when you have...natural inclination for this skill that you could strengthen. The right set of transferable skills, coupled...other just for the sake of disagreeing. It can be extremely toxic in a lab or work environment if left unchecked...conflict resolution is likely not one of your strengths. Empathizing with people, especially people with...conflicts within a given organization, it can help tremendously to have as much context as possible. When I ...recognize that conflict resolution may never be a strength for you. But if you are a problem solver, and ...
  9. CRISPR Plasmids - RNA Targeting

    Type
    Collection
    ..., and plants. Mammalian ID Plasmid Gene/Insert Promoter Selectable Marker PI Publication Bacterial ID ...spacer sequence and contain a PAM sequence just downstream of the sequence to be cleaved. This non-specific...
  10. CRISPR-mediated Plant Base Editors

    Type
    Blog Post
    ...RNA (protospacer+scaffold) in a pol-III (OsU3) promoter driven expression system. We use a single polycistronic...conversion of a target ‘A’ to ‘I’ (inosine), which is treated as ‘G’ by cellular polymerases. Subsequently, an...developed using the hAPOBEC3 deaminase can edit in a stretched window ranging from 1-17 bp relative to the PAM...
  11. CRISPR Guide

    Type
    Collection
    ...are often used to change an amino acid, turn a promoter on/off, or add small protein tags. Precise Modifications... editors include several fused components that promote the intended repair pathway or inhibit unwanted... converting cytidine to uridine. However, they promote the base excision repair pathway, which fully removes...improved PE2/PE3 to inhibit mismatch repair to promote desired edit epegRNA - addition of a structured...while activation and repression libraries target promoter or enhancer regions. As each library is unique...transcriptional repressors or activators and targeting promoter regions. You might sometimes see these referred...the methylation state of cytosines in a gene’s promoter or by inducing histone acetylation or demethylation...
  12. CRISPR Plasmids - gRNAs

    Type
    Collection
    ... or repression experiments use targets within promoters. Do you have gRNAs you'd like to add to the Addgene...wild-type SpCas9 must be used with targets that are upstream of a 5' NGG 3' PAM sequence. Which CRISPR application...
  13. Using Phosphoserine to Study Protein Phosphorylation

    Type
    Blog Post
    ...that binds specifically to phosphate moieties and promotes a robust mobility shift in phosphorylated, but...pSer-incorporation on enzyme function through phosphatase treatment. If a candidate phosphatase is unknown, CIP or...
  14. How to Design Your gRNA for CRISPR Genome Editing

    Type
    Blog Post
    ...nuclease-dead Cas9 (dCas9) is directed near the promoter of a target gene. Here, the target window is not...window upstream of the transcription start site (TSS), while for CRISPRi, a ~100nt window downstream of the...ability of the cell to use an alternative ATG downstream of the annotated start codon. Likewise, we avoid...
  15. Hot Plasmids: Summer 2024

    Type
    Blog Post
    ...sites on the target DNA, and thus inactivating the promoter. Image reused with permission from Neumann et ...this proof-of-concept study) are captured on streptavidin-coated magnetic beads through an assembly of...with a GFP nanobody (Figure 1). This enrichment streamlines the purification and minimizes sample loss while...
  16. PiggyBac-ing Through the Genome Editing Field

    Type
    Blog Post
    ...integration at regions of open chromatin, especially at promoter or exonic regions. If the cell’s chromatin structure...piggyBac-ing models and new therapeutic strategies.,” Trends Biotechnol., vol. 33, no. 9, pp. 525–33, Sep. 2015...
  17. Viral Vectors 101: AAV Serotypes and Tissue Tropism

    Type
    Blog Post
    ...expression from rAAVs also depends on your choice of promoter/enhancer. Table 1: AAV capsids and receptors. ...developed from prior natural exposure or rAAV treatment, which can pose problems for gene therapy applications...therapeutic outer retinal gene delivery from the vitreous. Science Translational Medicine, 5(189), 189ra76...
  18. Important Considerations When Using AAVs

    Type
    Blog Post
    ...recombinant adeno-associated virus (scAAV) vectors promote efficient transduction independently of DNA synthesis...of AAVs in humans AAVs are already being used to treat disease in humans and additional improvements are...transduction efficiency, and safety profiles should strengthen its appeal for the scientific and medical communities...
  19. Plasmids 101: Using Transposons in the Lab

    Type
    Blog Post
    ...example, piggyBac and Tol2 are best for screening promoters and enhancers since they are biased to insert ...from the donor molecule, and inserts it ~50 bp downstream of QCascade’s genomic target site (Fig. 3B). ...from the donor molecule, and inserts it ~50 bp downstream of QCascade’s genomic target site.  T-RL= transposon...
  20. Genomic Deletions in Mammalian Cell Lines

    Type
    Collection
    ... 20-mer is not G. sgRNA expression from the U6 promoter of the pX330 vector is enhanced by the inclusion...each sample and sequence each colony using a U6 promoter forward primer: CGTAACTTGAAAGTATTTCGATTTCTTGGC...non-deletion band”) and another set of primers upstream and downstream of the sgRNA cleavage sites (“deletion ...sequences consist of a 20-mer (“protospacer sequence”) upstream of an “NGG” sequence (“protospacer adjacent motif...consists of DMEM supplemented with 2% penicillin/ streptomycin and 1% L-glutamine, which is used for MEL cells...
  21. Cancer and the Immune System: Deciphering the Relationship

    Type
    Blog Post
    ...activates hypoxia inducing factor (HIF-1), which promotes the production of VEGF to increase angiogenesis...labor with up and coming immunotherapy treatments. As treatments enter the clinic, physicians and researchers...more vasculature to feed themselves, use the blood stream to commute to and invade multiple organs, and most...cause, manifestation, diagnosis, recurrence, and treatment of cancer have been extensively explored. Biologists...compromised either due to age, infections, or other strenuous biological changes. In contrast to the acute immune... cytokines like TGFβ and IL-6. However, when strengthened through efforts to boost the activity of the... ability of even these conventional antitumor treatment strategies can be enhanced. Types of immunotherapeutics...
  22. p53 Pathway

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    Collection
    ... the best-characterized effects of p53 are in promoting cell cycle arrest, apoptosis, or senescence in...suppressor activated by cellular stresses like DNA damage, oxidative stress, and nutrient deprivation. p53...factor and tumor suppressor activated by cellular stress. Cancer...
  23. Antibodies 101: Designing Your First Flow Panel

    Type
    Blog Post
    ...spectrum. When photons are absorbed by matter, they promote electrons within atoms to a higher energy state...fluorescence. Another way to label proteins is through treating cells with fluorophore-conjugated antibodies that... fluorophore's brightness refers to the signal strength of the emitted photons detected by the cytometer...
  24. Starter Guide to induced Pluripotent Stem Cells (iPSCs) Part 2:  Reprogramming and Transdifferentiation

    Type
    Blog Post
    ...iPSC-derived osteoblasts and osteoclasts together promote bone regeneration in 3D biomaterials. Sci Rep, ...examples of transdifferentiation in vitro where treatment of mouse fibroblasts with 5-azacytidine led to...Mukherjee. Kusumika (Kushi) Mukherjee is the Editor of Trends in Pharmacological Sciences, a Cell Press reviews...adult pancreatic alpha-cells to beta-cells after extreme beta-cell loss. Nature, 2010. 464(7292): p. 1149...expression of insulin genes in liver and ameliorates streptozotocin-induced hyperglycemia. Nat Med, 2000. 6(5):... PMID: 18754011. 43. Zhou, Q. and D.A. Melton, Extreme makeover: converting one cell into another. Cell...
  25. Typing CRISPR Systems

    Type
    Blog Post
    ...because it can process multiple gRNAs under a single promoter, allowing for easy multiplexing. The double-stranded...bacterial and archaeal immune systems has led to extreme sequence divergence that requires a multi-pronged...subtypes, A–C, with the beloved SpCas9 (from Streptococcus pyogenes) belonging in II-A. Cas9 was the first... CRISPR-Cas: beyond the Cas10 effector complex. Trends in Biochemical Sciences, 49(1), 28–37. https://...
  26. CRISPR History and Development for Genome Engineering

    Type
    Collection
    ...sequence (PFS). In bacteria, Cas13 targeting also promotes non-specific RNA cleavage, but this non-specific...mouse, and rat) Bacteria ( E. coli , Streptococcus , Streptomyces , and others) Drosophila Plants (monocots...20 bp in length and paste them into contiguous stretches of DNA known as CRISPR arrays. Separate Cas proteins...proteins or RNAs through ChIP (enChIP) or biotin-streptavidin pulldown (CAPTURE.) Tag : Multiple methods make...exploring therapeutic applications of CRISPR to treat genetic disease, with the caveat that off-target...
  27. Molecular Biology Reference

    Type
    Guide
    ...tissue-specific promoter (e.g., a liver-specific promoter). The strength of the promoter is also important...human cells, the promoter will be a human or mammalian promoter sequence. The promoter can also direct ...particular plasmid. Promoter Region Drives transcription of the insert. The promoter is designed to recruit...expression (i.e., a strong promoter directs high expression, whereas weaker promoters can direct low/endogenous...information about promoters, both bacterial and eukaryotic, as well as common promoters used in research...contain a promoter sequence, a transcription terminator sequence, and the inserted gene. The promoter region... of Replication Plasmids 101: The Promoter Region-Let’s Go Promoters Reference Page Plasmids 101: How ...
  28. Sequencing Primers

    Type
    Guide
    ...vectors with AOX1 promoter, forward primer 35S promoter CTATCCTTCGCAAGACCCTTC CaMV 35S promoter, forward primer... early promoter, forward primer LKO.1 5' GACTATCATATGCTTACCGT (Weinberg Lab) Human U6 promoter, forward...ATTTAGGTGACACTATAG SP6 promoter, forward primer T3 GCAATTAACCCTCACTAAAGG T3 promoter, forward primer T7 TAATACGACTCACTATAGGG...Human U6 promoter, forward primer LNCX AGCTCGTTTAGTGAACCGTCAGATC (BD Biosciences) Human CMV promoter, forward...metallothionein 1 promoter, forward primer mU6-F CAGCACAAAAGGAAACTCACC Mouse U6 promoter, forward primer...Nopaline synthase promoter, forward primer Nmt1-F GCAATGTGCAGCGAAACTAA S. pombe nmt1 promoter, forward primer...baculovirus vector with polyhedrin promoter, reverse primer pQE promoter CCCGAAAAGTGCCACCTG (Qiagen) 5' of...
  29. Plasmids for Stem Cell Research

    Type
    Collection
    ...lentiviral plasmids The acetyllysine reader BRD3R promotes human nuclear reprogramming and regulates mitosis...Nature. 2011 Jul 13. doi: 10.1038/nature10323. Crabtree Fibroblasts Motor Neurons Retroviral Mouse/Human...
  30. Plan Your Experiment

    Type
    Guide
    ...Cas enzyme and gRNA Species of promoter and expression pattern of promoter for Cas enzyme and gRNA Presence...Cas enzyme promoter can be constitutive (CMV, EF1alpha, CBh) or inducible (Tet-ON); U6 promoter is typically...such as dCas9-KRAB) or dCas9 gRNA(s) targeting promoter elements of target gene dCas9-KRAB is more effective...activator (such as dCas9-VP64) gRNA(s) targeting promoter elements of target gene Many different activators...dCas9-repressors, gRNAs should be targeted to the promoter driving expression of your gene of interest. For...containing a G nucleotide at position 20 (1 bp upstream of the PAM) may be more efficacious than gRNAs...amplified, PCR products are denatured-renatured, treated with a nuclease that cleaves DNA heteroduplexes...
Showing: 211 - 240 of 245 results