Cell Biology

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    Protocols in Current Issue
    Non-invasive Quantification of Cell Wall Porosity by Fluorescence Quenching Microscopy
    Authors:  Xiaohui Liu, Thomas Günther Pomorski and Johannes Liesche, date: 08/20/2019, view: 509, Q&A: 0
    [Abstract] All bacteria, fungi and plant cells are surrounded by a cell wall. This complex network of polysaccharides and glycoproteins provides mechanical support, defines cell shape, controls cell growth and influences the exchange of substances between the cell and its surroundings. Despite its name, the cell wall is a flexible, dynamic structure. ...
    Physical Removal of the Midbody Remnant from Polarised Epithelial Cells Using Take-Up by Suction Pressure (TUSP)
    Authors:  Miguel Bernabé-Rubio, David C. Gershlick and Miguel A. Alonso, date: 04/20/2017, view: 4893, Q&A: 0
    [Abstract] In polarised epithelial cells the midbody forms at the apical cell surface during cytokinesis. Once severed, the midbody is inherited by one of the daughter cells remaining tethered to the apical plasma membrane where it participates in non-cytokinetic processes, such as primary ciliogenesis. Here, we describe a novel method to physically remove ...
    Evaluation of Angiogenesis Inhibitors Using the HUVEC Fibrin Bead Sprouting Assay
    Authors:  Laura Winters, Nithya Thambi, Julian Andreev and Frank Kuhnert, date: 10/05/2016, view: 8157, Q&A: 0
    [Abstract] Angiogenesis, the growth of new blood vessels from pre-existing vessels, is a critical process that occurs during normal development and tumor formation. Targeting tumor angiogenesis by blocking the activity of vascular endothelial growth factor (VEGF) has demonstrated some clinical benefit; nevertheless there is a great need to target additional ...
    α2β1-integrin Clustering and Internalization Protocol
    [Abstract] α2β1-integrin clustering experiment can be used to trigger internalization of α2β1-integrin. When clustering is performed with sequential administration of primary and fluorescent secondary antibodies, the entry kinetics of integrin can be followed into the cell. The idea is first to allow binding of primary antibodies (recognizing the ...
    Cell Surface Protein-protein Binding on COS-7 Cells
    Authors:  Kae-Jiun Chang and Matthew N. Rasband, date: 01/05/2014, view: 7201, Q&A: 0
    [Abstract] Examination of interactions between a transmembrane protein and a soluble protein by pull-down or immunoprecipitation assays can be tricky and complicated due to the detergent extraction of membrane proteins during the lysate preparation step. The choice and concentration of detergents must be determined empirically and the procedure can be ...
    Stomatal Bioassay in Arabidopsis Leaves
    Authors:  Xuan Li, Xian-Ge Ma and Jun-Min He, date: 10/05/2013, view: 10623, Q&A: 1
    [Abstract] Stomata embedded in the epidermis of terrestrial plants are important for CO2 absorption and water transpiration, and are possible points of entry for pathogens. Thus, the regulation of stomatal apertures is extremely important for the survival of plants. Furthermore, stomata can respond via accurate change of stomatal apertures to a ...
    Cell Surface Protein Biotinylation and Analysis
    [Abstract] A great way to specifically isolate and quantify proteins in the cell surface membrane is to take advantage of the biotinylation technique. It consists of labeling cell surface proteins with a biotin reagent before lysing the cells, and isolating these tagged proteins by NeutrAvidin pull-down. Then, the samples are subjected to SDS-PAGE ...



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