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We narrowed to 813 results for: cell

Showing: 41 - 60 of 813 results

  2. Save Time and Money by Making Your Own Competent Cells

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    Blog Post
    ... competent cells (protocol)  Transformation of electrocompetent cells (protocol)  Cells prepared using...to make your own competent cells It’s easy to make your own competent cells. If you need a high efficiency...purchasing competent cells. However, for most everyday cloning, homemade competent cells will work just fine...Preparing chemically competent cells (protocol)  Preparing electrocompetent cells (protocol)  Untergasser...of chemically competent cells (protocol) Preparation of electrocompetent cells (protocol) At Addgene...Set  from Zymo Research to make competent cells because cells prepared using this kit can be transformed...then wash and resuspend the cells in the provided buffers. The competent cells are then aliquoted and stored...

  3. Antibodies 101: Introduction to Gating in Flow Cytometry

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    Blog Post
    ...Many cell types can be found in the tumor microenvironment (tumor cells, immune cells, blood cells and ...about 53% of my cells are dendritic cells and ~13% are CD8+ T cells. Around 34% of the cells are neither ...neither of the two cell types (likely B cells and others). Almost no cells stain positively for both markers...measure your cells of interest. In many experiments you’ll be working with a heterogeneous cell population...processed piece of tissue, where cells are present that vary in cell type, size, and marker proteins. ...analyzing a homogenous cell population in culture, it is normal to observe diversity in cell size, marker expression...illuminates the passing cell with a laser and detects the light scattered by that cell at a low angle (FSC...

  4. Fluorescent Proteins 101: Monitoring Cell Mobility Using Fluorescent Proteins

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    Blog Post
    ...labeling T cells, B cells, and antigen presenting cells, scientists have been able to decypher cellular dynamics...tracked by cell sorter giving immunologists the ability to count cells and statistically analyze cell movements...fast T cells could jump from one antigen presenting cell to another. Indeed, we now know that T cells are...2016)? How do dendritic cells migrate to lymph nodes to activate T cells (Celli et al 2008, Kitano et al...In complex metazoans, rapid cell division and large scale cell mobility are essential processes during.... a basal progenitor cell migrating to the epithelium). At this stage, only cells from the immune system...to directly follow immune cells in lymphoid organs. The development of cell sorters together with the ...

  5. Cancer and the Immune System: Deciphering the Relationship

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    ...activity, and consists of other cell types, especially immune cells and cells of epithelial origin. Suppressing...turns off T cell function upon interaction with APCs. Furthermore, tumor cells alter their cell-surface proteome...molecules needed for T cell effector function. Cancer cells also produce programmed cell death ligand (PD-L1... activity of CTLs and NK cells. These cells would normally kill cancer cells but are directed not to through...to use whole cell therapeutics consisting of various types of immune cells. Dendritic cells (DCs) are particularly... intravenously. B cells and T cells activated ex vivo are also contestants for cell-based immunotherapy... include: Cell heterogeneity Tumors are composed of a wide variety of cell types. This cell heterogeneity...

  6. Plasmids 101: Mammalian Vectors

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    ...transfected cells may be considered an entirely new cell line from that of the original parental cells. Positive...cultured mammalian cells. Of course, these mammalian vectors must be compatible with the cell type they are...bacterial cells); however, the techniques and reagents vary. Plasmid transfection into mammalian cells is fairly...expression levels in the cells. Ideally, the chosen reporter is unique to the cell, is expressed from the...components expressed in trans within the cell for effective replication. Cell lines expressing the Epstein–Barr...mammalian cells To achieve stable transfection, there should be a selective pressure to force cells to incorporate...(basically growing cells in various concentrations of the selection reagent). Cells should die within ...

  7. Fluorescent Protein Guide: Biosensors

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    Collection
    ... pH Imaging intracellular pH in live cells (pHRed) Imaging Intracellular pH in Live Cells with a Genetically...SponGee: A Genetic Tool for Subcellular and Cell-Specific cGMP Manipulation. Cell Rep. 2019 Jun 25;27(13):...biosensor for visualization of acetyl-CoA in live cells. Cell Chem Biol. 2025 Jan 21: S2451-9456(25)00002-9... Tantama ATP QUEEN ATP sensors for live-cell imaging Live cell imaging of metabolic heterogeneity by quantitative...for Imaging Insulin Secretion in Single beta Cells. Cell Chem Biol. 2017 Apr 20;24(4):525-531.e4. Dmytro...accessibility. Cell. 2022 Sep 1;185(18):3390-3407.e18. David Clapham Return to Top Cell Physiology Target...ATP (extracellular) ecAT3.10 extracellular ATP sensor (cell surface targeted) Imaging extracellular ATP...

  8. Plasmids for Endogenous Gene Tagging in Human Cells

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    ... hiPS cell lines generated using these plasmids, please visit the Cell Catalog on the Allen Cell Explorer...Institute for Cell Science. Learn more by visiting the Allen Cell Explorer at allencell.org and the Allen... in human cell lines. Furthermore, the quality control necessary to ensure the edited cells are behaving..., and the stem cell lines we’ve made using them are available as part of the Allen Cell Collection at ... and images generated from these cell lines can be found in the Cell Catalog on our data portal. The plasmids...transfect the cells, these large regions of homology enable us to effectively utilize the host cell’s inherent...

  9. What the HEK?

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    Blog Post
    ...embryonic kidney (HEK) cells originated from? Or why they are such a commonly used cell culture model? In ...isolating the cell line all the way to modern applications. What the HEK is it?   HEK cells were first ...inconsistent with kidney cells (Shaw et al.). Since then, transcriptome studies of the cell line have determined...any unwanted material (HEK cells, etc.) and are ready to use on another cell or organism. This pipeline...where HEK cells may be particularly useful due to their intrinsic properties. HEK-293 cells are tumorigenic...researchers using the cell line. What the HEK is wrong with it?   All cultured human cell lines are susceptible... your cells can catch a cold—or worse! HEK-293T and its derivatives are immortalized, but cell health...

  10. Production of Virus in Insect Versus Mammalian Cells

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    ...that already do mammalian cell culture. HEK-293T cells are the most common cells used in viral production...versus insect cells for viral production Consideration Mammalian cells Insect cells Viruses AAV ...type of cells that will be used to make the virus. Viruses can be produced in many different cell types,...produced in bacteria cells. However, some viruses can be produced in multiple different cell types, including...you make an informed decision. Mammalian cells Mammalian cells are a great option for viral production,...production in mammalian cells is relatively quick. After transfection, HEK-293T cells start producing virus...using qPCR or digital droplet PCR. Insect cells Insect cells are a less common option for the generation...

  11. Another Pathway into Cells: iTOP

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    Blog Post
    ...types of primary mouse cells, including neuronal and gut stem cells, dendritic cells, embryonic fibroblasts...fibroblasts, glia cells and neurons, and cell death post-transduction is low. Neuronal stem cells transduced... Primary cells recapitulate the natural biology of a cell type of interest better than immortalized lines...introduce a gene of interest into primary cells, so most primary cell lines require viral infection. A new ... primary cells. What if, instead of supplying a DNA construct, they could simply induce cells to take ...primary cell types using Cre and various loxP reporters. In both mouse and human embryonic stem cells, they...cultured mammalian cells by osmotic lysis of pinocytic vesicles. Okada CY, Rechsteiner M. Cell. 1982 May;29(...

  12. The Breast Cancer Microenvironment: A Tumor’s Backstage Team

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    ...and spread of cancer cells. Besides these stromal cell modifications, stromal cells are also constantly...how cancer cells influence microenvironments and vice versa, let’s take a look at cancer cell metabolism...inflammation, a noteworthy cell type in the tumor microenvironment is the immune cells. The contradiction is...injecting breast cancer cells into mice, exosomes expressed specific integrins (cell-adhesion proteins) targeting... be transferred to other cells, inducing epigenetic changes in targeted cells. In this case, exosomes ...Friendly” microenvironment cells Not all is bad news – we also have “friendly” cells in microenvironments! ...Take myoepithelial cells for instance. They retard tumor formation by inhibiting cell growth, invasion,...

  13. Plasmids 101: Protein Expression

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    Blog Post
    ...produced using complex mixtures derived from cells or using live cells. There are several types of expression...consists of transfecting cells with your DNA template of choice and allowing these cells to transcribe, translate...demanding cell culture conditions compared to other systems. Insect expression systems Insect cells can also...coli or yeast cells. The only problem with baculovirus systems is that the infected host cell is eventually...eventually lysed. Cell lysis halts protein production, but there are non-lytic insect cell expression systems...Sf21, Hi-5 cells)  that allow for continuous expression of genes integrated into the insect cell genome. ...that is then transformed into a bacterial cell. Transformed cells propagate, are induced to produce your ...

  14. Viral Production

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    ... preparations are added to cells in culture. Three to five days later, cell cultures are inspected for... a new vial of early passage cells. Approximately 2 weeks post-thaw, cell culture supernatant is tested...involves transducing cells with serial dilutions of the lentiviral vector, harvesting cells several days later...see maps section for images). Figure 2: AAV Pro cells were transduced with either pAAV-Ef1a-mCherry-IRES-Cre... (55634-AAVrg) alone at 1.7E6 viral genomes (vg)/cell, pAAV-CAG-FLEX-rc [Jaws-KGC-GFP-ER2] (Addgene 84445...Production Lentiviral preparations are produced in 293T cells using the 2nd generation psPAX2 and pMD2.G packaging...packaging system developed by the Trono lab . Cell culture medium (OptiPro SFM) containing lentivirus is ...

  15. 10 Basic tips for mammalian cell culture

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    Blog Post
    ...times), depending on the cell line so old cells should be retired! Conversely, cells younger than the 3rd ...Make sure cells don't stay out too long While you’re preparing things, make sure your cells don’t stay...contaminants. Set up a routine to split cells Don’t be lazy about splitting cells, instead try to form a routine...’s best to split cells before the plates are more than 80-85% confluent because cells like their space...numbers! When starting off with a new cell line, grow the cells, aliquot them into a number of vials, ... Addgene Blog The Challenges of Cell Culture Cloning Mammalian Cells with the Agarose Method Plasmids...lactic acid (a by-product of cellular metabolism that is toxic to the cells), and need to be split very...

  16. Multicolor Animals: Using Fluorescent Proteins to Understand Single Cell Behavior

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    ...Because each cell can have multiple copies of the transgene that will recombine independently, cells may acquire...expressed. Each cell remains the same color for its entire lifetime and daughter cells retain the same... the fate mapping of cell populations over time. The ability to track single cell dynamics at the organism...expressed in a single cell maintains its color over the entire length of the cell, even axons of up to ... specific cell type. The Confetti mouse was first used to describe the self-renewal of cells in the intestinal...for tracking the fate of Langerhans cells. In the Ubow mouse, cells expressing YFP, CFP, and RFP are not... of CFP++ cells permitted researchers to longitudinally map the turnover of Langerhans cells in the dermis...

  17. Zebrafish Plasmid Collection

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    ... and track clones of cells over time. Examples of useful tools for studying cells that share clonal origin...Shendure Lab Simultaneous single-cell profiling of lineages and cell types in the vertebrate brain - Alex...Mumm Lab. NTR 2.0/MTZ-based cell ablation system that allows sustained cell loss and ablation of ...Sauka-Spengler Lab Lineage Tracing Cell lineage tracing in multicellular systems typically relies on genetic...below: UFlip CRISPR targeted integration vectors for cell-type specific conditional gene inactivation - Jeffrey...Pantazis Lab Multibow: digital spectral barcodes for cell tracing - Sean Megason Lab Zebrabow - Albert Pan... previously resistant cell types. CreLite - George Eisenhoffer Lab. An optogenetically controlled...

  18. Viral Vectors

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    ...hard-to-transfect mammalian cells. In addition, "viral pseudotyping" can be used to target specific cells or tissues. ...genetic material into a cell, and even deliver this genetic material to specific cells in an organism. Figure...Genome Packaging Capacity Virus Size (nm) Cells Infected Target Cell Genome Integration Immune Response Lentivirus...because of their ability to transduce non-dividing cells. These viruses enable long-term stable gene expression...ability to preferentially infect and kill cancer cells. Adenoviruses have high transduction efficiency ... though this infectivity is limited to dividing cells. Retroviruses integrate permanently into the host...for the delivery of this genetic information to cells. Adapting plasmid DNA for use with virus-mediated...

  19. Delivery Methods for Generating iPSCs

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    ...Pluripotent Stem Cells by Direct Delivery of Reprogramming Proteins." Cell Stem Cell 4, no. 6 (2009): ...Jaenisch. "Induced Pluripotent Stem Cells Meet Genome Editing." Cell Stem Cell 18, no. 5 (2016): 573-86. PubMed... express a cocktail of stem cell reprogramming factors and wait for cells to de-differentiate. However...transgene-free and vector-free cells Genome integration Need to sequence cells to verify excision didn’t ...vector-free cells No genomic integration Can be difficult to fully remove virus from cells Plasmid Non-integrating...transduces a wide range of cell types and replicates in the cytoplasm independent of the cell cycle. A challenge...virus which is removed by culturing cells at 38℃, but screening cells for the presence of transgenes is ...

  20. Performing In Vivo CRISPR Screens Using the FITS Approach

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    ...activated T cells, precluding analyses of T cell differentiation beginning with naïve T cells. The Framework...screens have been used to interrogate T cells, an important immune cell type, in more complex and physiological...naïve T cells. More broadly, this system can be used to perform in vivo screens in other cell types. A...screens to assess T cell responses and clonal dynamics in lymph nodes (LN) and tumor cells. Figure used with...FITS In vitro CRISPR screens in immune cells have identified many putative regulators of immunity. However...Framework for In vivo T cell Screens (FITS) approach (Milling and Markson et al., 2024), developed and deposited...enables efficient knockout (KO) of genes in immune cells; (2) is not immunogenic, a necessity for in vivo...
Showing: 41 - 60 of 813 results