Skip to main content

We narrowed to 813 results for: cell

Showing: 281 - 290 of 813 results
  1. Click Biology: How to Click and Play to Explore Biology

    Type
    Blog Post
    ...building-blocks of living cells, rapidly forming covalent bonds to specific partners under cell-friendly conditions...using the reactive groups naturally present in a cell? By analogy to Click Chemistry, Click Biology can...the diverse kinds of proteins that one finds in cells. High yield of reaction — generating product without...reduced; in the ER and Golgi apparatus and outside the cell, most cysteines are oxidized in disulfide bonds....temperature and on ice, when we have cracked open the cells. The tools should react in all of these situations... for connecting proteins in the test tube or in cells. There are also SNAP-tag and HaloTag modules, which...large DNA fragments at user-defined locations NEB Cell-Imaging Collection SNAP-tag, CLIP-tag Plasmids for...
  2. Pairing CombiGEM and CRISPR for Combinatorial Genetic Screening

    Type
    Blog Post
    ...genes essential for West-Nile-virus-induced cell death." Cell reports 12.4 (2015): 673-683. PubMed PMID:... (and multiple) genetic perturbations in single cells. Methods to scale up multiplexed CRISPR systems ...perturbations and applications in functional genomics, cell reprogramming, and beyond. For further details, ...CRISPR-mediated control of gene repression and activation." Cell 159.3 (2014): 647-661. PubMed PMID: 25307932. PubMed...Genes and Genotype-Specific Cancer Liabilities." Cell 163.6 (2015): 1515-1526. PubMed PMID: 26627737. ...Genome-wide recessive genetic screening in mammalian cells with a lentiviral CRISPR-guide RNA library." Nature...Genome-scale CRISPR-Cas9 knockout screening in human cells." Science 343.6166 (2014): 84-87. PubMed PMID: 24336571...
  3. Visualizing Genomic Loci with CRISPR-Sirius

    Type
    Blog Post
    ... to date for visualizing genomic loci in living cells. Previous iterations of genomic loci visualization...labeling system to visualize chromosomal loci in human cells (Ma et al., 2015). To do so, they fused a different...visualization of sites on different chromosomes in living cells, the system requires high-copy chromosome-specific... aptamer system to visualize the gRNA in living cells. Broccoli aptamers are nucleic acid sequences that...production needed to deliver CRISPR-Sirius into cells. They named this guide sgRNA-Sirius-8XMS2 which ... 46 loci gave a detectable signal in human U2OS cells. Based upon this, they chose an intergenic DNA region...copy number variation (CNV) analysis of the U2OS cells.   Figure 2: CRISPR-Sirius tricolor labeling...
  4. Antibodies 101: Flow Cytometry Controls

    Type
    Blog Post
    ...and beads that are unable to bind to them: like cells but with far more predictability. The beads create...The benefit of beads is that they do not require cells from your experiment, and they are non-specific....flow cytometer, you generally want your positive cells to read between 104 and 105 in order to have enough...the plot to see all of your positive and negative cells. This can be achieved by adjusting your voltage ...gating schematic to easily determine where your cells of interest are (B).   Using FMO controls In...markers or commonly used markers that define broader cell populations (e.g., CD4, CD8b, CD11b, CD19), are ...require an FMO. Markers that define more specific cell populations, often used in the later gates, are ...
  5. CUT&RUN: An Improved Method for Studying Protein-DNA Interactions

    Type
    Blog Post
    ...when working with cell culture, because it is easy to harvest large quantities of cells. However, when working...numbers of cells or when a high degree of signal to noise is desired. It also provides an excellent additional... been widely applied in many model organisms and cell lines. Although ChIP-seq is a relatively simple ...typically requires a large amount of input material, cells or tissue, to produce a strong enough signal over...protein of interest. First, nuclei from tissue or cell culture are isolated using lectin-coated magnetic...the usage of a strong detergent to permeabilize cells rather than to rely on nuclei extraction. They report...technique, specifically in terms of initial steps of cell or tissue preparation.   All in all, CUT&RUN offers...
  6. Zebrafish as a Model for Behavior: Swimming into the Optogenetic Spotlight

    Type
    Blog Post
    ... light sensitive proteins (opsins) to manipulate cell activity, enables researchers to silence or incite...channels that allow charged particles to cross the cell membrane when exposed to light. Neuronal firing ...channel LiGluR both cause ion movement that results in cell depolarization. They therefore function as a neuron...in negative chloride ions which hyperpolarize the cell. It therefore functions as a neuron “off switch....They found that photostimulating the Kolmer-Agduhr cells was sufficient to trigger the symmetrical tail movement...forward swimming. Furthermore, only Kolmer-Agduhr cells on one side of the body required photostimulation...symmetrical response.  The function of Kolmer-Agduhr cells had previously been a mystery, but through the control...
  7. Plasmids 101: What is a plasmid?

    Type
    Blog Post
    ... small circular piece of DNA found in bacterial cells, and someone new to plasmids may need some extra...and designed to introduce foreign DNA into another cell. Minimally, lab-created plasmids have an origin ...the ability of plasmids to self-replicate within a cell make them attractive tools for the life scientist...component for expression vectors: determines which cell types the gene is expressed in and amount of recombinant...plasmids also have selectable markers for use in other cell types. Primer Binding Site A short single-stranded...newly inserted gene is transformed into bacterial cells and selectively grown on antibiotic plates.  Importantly...plasmids to manipulate gene expression in target cells. Characteristics such as flexibility, versatility...
  8. A Scientist's Guide to Ebola

    Type
    Blog Post
    ... infected cells to go undetected by the immune system in a novel way, by shielding host cell surface proteins... itself to escape vesicles within host cells and turn the cell into a veritable virus factory.  Their ... sets off.  The virus works its way into immune cells in ways that aren’t fully understood. Much of the... viral attachment and fusion. Once inside a host cell, new evidence in PLoS Pathogens shows that the Ebola...
  9. FLEx Technology and Optogenetics: Flipping the switch on gene expression with high spatial and temporal resolution

    Type
    Blog Post
    ... specific cell-type promoter. Once injected into the brain, the viruses infect all the cells with an inactive...proteins control the flow of electric charges across cell membranes and maintain membrane potential in response...once a certain number of positive ions crosses the cell membrane, a threshold is reached and the neuron ...selective expression of opsin genes in targeted cells makes it possible to control neuronal activity with... This could be overcome by fusing opsin genes to cell-type specific promoters; however, those usually ...drive weak expression of downstream genes. Strong cell-specific promoters, on the other side, are too long...achieve strong opsin expression in specific neuronal cell types then? This is where FLEx enters the scene....
  10. Antibodies 101: Validation

    Type
    Blog Post
    ...antibody binding in the transfected cells but not in control cells. But (there is always a ‘but’), you...transfect it into your favorite cell line. In parallel, you transfect cells with another plasmid not encoding...the cells transfected with your protein of interest and show just the faintest band from the cells transfected...look at the subcellular localization of a protein of interest. Conveniently, you found a cell line in which...when you start using complex samples such as whole cell lysate or tissue sections. It is important to confirm...proteomic data from several different tissues or cell types. If your antibody indeed binds to your target...You perform immunocytochemistry on these mutant cells as well as a non-mutant line and see a great antibody...
Showing: 281 - 290 of 813 results