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We narrowed to 818 results for: cell

Showing: 231 - 240 of 818 results

  1. 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 ...

  2. 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...

  3. 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...

  4. 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...

  5. 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...

  6. CRISPR History and Development for Genome Engineering

    Type
    Collection
    ...genomic loci in living human cells by an optimized CRISPR/Cas system. Cell . 155(7):1479-91. PMID: 24360272... for Mapping Multiprotein Complexes in Human Cells. Cell Rep . 13(3):621-33. PMID: 26456817 Fu Y, Sander...described CRISPR-based genome editing in mammalian cell culture. Five years later, PubMed lists more than...multiple loci can be easily expressed in the same cell or organism. The ability to precisely target CRISPR...genome edits or double-strand breaks. In mammalian cells, Cas13-ADAR2 does not require a specific flanking...proteins can be used to image genomic loci in live cells. RNA targeting : Cas13 enzymes target RNA rather...non-specific cleavage does not occur in mammalian cells. Purify : Epitope-tagged dCas9 can also be used ...

  7. 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....

  8. 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...

  9. Neurodegeneration Research Collection

    Type
    Collection
    ...protein-protein interactions and nerve cell function within the cell. Parkinson's Disease Parkinson’s disease...inducible vector . Harley et al. Cell Rep. 2023 Dec 26. Induce CNS cells with concomitant expression of ...that causes the progressive degeneration of nerve cells in the brain. Symptoms include changes in behavior...FRET-based reporter to study tau seeding in mammalian cells. Lathuiliere et al. Mol Neurodegener. 2023 Aug 8...system, peripheral nervous system, vesicular brain cells and more. New and Noteworthy: AAV.rTH.PI.Cre.SV40...and cortical neuron differentiation. Held et al. Cell Rep. 2023 Aug 30. Enhance differentiation to mesencephalic...neuronal identification in C. elegans. Yemini et al. Cell. 2021 Jan 7. Use a FRET-based method to monitor ...

  10. The Fluorescent Vegetables in Aptamer Soup

    Type
    Blog Post
    ...RNA aptamers are used to track cellular processes by transforming cells with plasmids encoding aptamer-tagged... been used to investigate intracellular viral DNA dynamics in neuronal cells (Nilaratanakul et al., 2017...and later introducing the small molecule into the cell. The fluorescence that is generated allows for qualitative...). DFHBI is membrane permeable and non toxic to cells. Because it rapidly photobleaches, DFHBI can only...as stable metabolite sensors for imaging in live cells. By placing Spinach downstream of a riboswitch, ... 2014); its length reduces artefacts during live cell imaging. Bunch of baby spinach, or BoBS, contains...transformed, and then sorted by fluorescence-activated cell sorting (FACS) in the presence of DFHBI to identify...
Showing: 231 - 240 of 818 results