Cancer Biology

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    Protocols in Current Issue
    A Robust Mammary Organoid System to Model Lactation and Involution-like Processes
    Authors:  Elsa Charifou, Jakub Sumbal, Zuzana Koledova, Han Li and Aurélie Chiche, date: 04/20/2021, view: 94, Q&A: 0
    [Abstract]

    The mammary gland is a highly dynamic tissue that changes throughout reproductive life, including growth during puberty and repetitive cycles of pregnancy and involution. Mammary gland tumors represent the most common cancer diagnosed in women worldwide. Studying the regulatory mechanisms of mammary gland development is essential for understanding

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    Preparation of an Orthotopic, Syngeneic Model of Lung Adenocarcinoma and the Testing of the Antitumor Efficacy of Poly(2-oxazoline) Formulation of Chemo-and Immunotherapeutic Agents
    [Abstract]

    Tumor xenograft models developed by transplanting human tissues or cells into immune-deficient mice are widely used to study human cancer response to drug candidates. However, immune-deficient mice are unfit for investigating the effect of immunotherapeutic agents on the host immune response to cancer (Morgan, 2012). Here, we describe the

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    Preparation and Characterization of Poly(2-oxazoline) Micelles for the Solubilization and Delivery of Water Insoluble Drugs
    [Abstract]

    Many new drug development candidates are highly lipophilic compounds with low water solubility. This constitutes a formidable challenge for the use of such compounds for cancer therapy, where high doses and intravenous injections are needed (Di et al., 2012). Here, we present a poly(2-oxazoline) polymer (POx)-based nanoformulation strategy to

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    RI-SEC-seq: Comprehensive Profiling of Nonvesicular Extracellular RNAs with Different Stabilities
    Authors:  Juan Pablo Tosar, Fabiana Gámbaro, Mauricio Castellano and Alfonso Cayota, date: 02/20/2021, view: 1011, Q&A: 0
    [Abstract]

    Exosomes and other extracellular vesicles (EVs) are considered the main vehicles transporting RNAs in extracellular samples, including human bodily fluids. However, a major proportion of extracellular RNAs (exRNAs) do not copurify with EVs and remain in ultracentrifugation supernatants of cell-conditioned medium or blood serum. We have observed

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    Generation of the Compression-induced Dedifferentiated Adipocytes (CiDAs) Using Hypertonic Medium
    [Abstract]

    Current methods to obtain mesenchymal stem cells (MSCs) involve sampling, culturing, and expanding of primary MSCs from adipose, bone marrow, and umbilical cord tissues. However, the drawbacks are the limited numbers of total cells in MSC pools, and their decaying stemness during in vitro expansion. As an alternative resource, recent ceiling

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    Carboxyfluorescein Dye Uptake to Measure Connexin-mediated Hemichannel Activity in Cultured Cells
    [Abstract]

    Connexins are membrane bound proteins that facilitate direct and local paracrine mediated cell-to-cell communication through their ability to oligomerise into hexameric hemichannels. When neighbouring channels align, they form gap-junctions that provide a direct route for information transfer between cells. In contrast to intact gap junctions,

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    A Transient Transfection-based Cell Adhesion Assay with 293T Cells
    Authors:  Rohit Singh and Beom K. Choi, date: 01/05/2021, view: 993, Q&A: 0
    [Abstract]

    The in vitro cell adhesion assay is a quantitative method for measuring selective cell adhesion to specific proteins. Traditionally, cell adhesion assays employ purified protein immobilized on a solid glass or plastic surface. Here, we describe a transient 293T cell transfection-based cell adhesion assay to study selective cell adhesion of a

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    A Rigorous Quantitative Approach to Analyzing Phagocytosis Assays
    Authors:  Michael D. Caponegro, Kaitlyn Koenig Thompson, Maryam Tayyab and Stella E. Tsirka, date: 01/05/2021, view: 1742, Q&A: 0
    [Abstract] Studying monocytic cells in isolated systems in vitro contributes significantly to the understanding of innate immune physiology. Functional assays produce read outs which can be used to measure responses to selected stimuli, such as pathogen exposure, antigen loading, and cytokine stimulation. Integration of these results with high ...
    Triacylglycerol Measurement in HeLa Cells
    Authors:  Ximing Du and Hongyuan Yang, date: 12/20/2020, view: 1046, Q&A: 0
    [Abstract]

    Lipid droplets store triacylglycerols (triglycerides) and sterol esters to regulate lipid and energy homeostasis. Triacylglycerol measurement is often performed during the investigation of lipid droplet formation and growth. This protocol describes a reliable method using a fluorometric lipid quantification kit to measure triacylglycerols

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    Equilibrium and Kinetic Measurements of Ligand Binding to HiBiT-tagged GPCRs on the Surface of Living Cells
    Authors:  Michelle E. Boursier, Sergiy Levin, Robin Hurst and Rachel Friedman Ohana, date: 12/20/2020, view: 1036, Q&A: 0
    [Abstract]

    G-protein coupled receptors (GPCRs) remain at the forefront of drug discovery efforts. Detailed assessment of features contributing to GPCR ligand engagement in a physiologically relevant environment is imperative to the development of new therapeutics with improved efficacy. Traditionally, binding properties such as affinity and kinetics were

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