Cell Biology

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    Protocols in Current Issue
    Measurement of Mitotic Spindle Angle and Mitotic Cell Distance in Fixed Tissue of Drosophila Larval Brains
    Authors:  Maribel Franco and Ana Carmena, date: 11/20/2019, view: 23, Q&A: 0
    The positioning and the cleavage plane orientation of mitotic cells in pseudostratified epithelia (PSE) must be tightly regulated since failures in any of these processes might have fatal consequences during development. Here we present a simple ...
    Bacterial Synchronized Transfer Assays in Bone Marrow Derived Macrophages
    Authors:  Sedelia R Dominguez, Tom Kawula and Shaun P Steele, date: 11/20/2019, view: 51, Q&A: 0
    Merocytophagy (“mero”, Greek for partial; “cytophagy” for cell eating) is a process by which cells acquire microbes and cytosolic material through phagocytosis of a small portion of neighboring cells upon cell-cell contact. Cell-cell contact ...
    Determination of Chromatin Accessibility in Drosophila Midgut Enterocytes by in situ 5mC Labeling
    Authors:  Eliya Bitman-Lotan, Hector Rincon-Arano, Gal Raz and Amir Orian, date: 11/20/2019, view: 20, Q&A: 0
    Regulation of gene expression involves dynamic changes in chromatin organization, where in many cases open chromatin structure correlates with gene activation. Several methods enable monitoring changes in chromatin accessibility, including ATAC-seq, ...
    Opto-magnetic Selection and Isolation of Single Cells
    Authors:  Loïc Binan, Joannie Roy and Santiago Costantino, date: 11/20/2019, view: 36, Q&A: 0
    Capturing single cells from large heterogenous populations based solely on observable traits is necessary for many cell biology applications and remains a major technical challenge. The protocol we present allows the isolation of viable and ...
    Imaging Cryptococcus spp. Capsule by Differential Interference Contrast Microscopy Using Percoll®
    The most important virulence factor in the Cryptococcus genus is the polysaccharide capsule. This genus includes several species that cause life-threatening invasive disease. An increase in capsule thickness is important during fungal ...
    Assessing Different Ways of Bacillus subtilis Spreading over Abiotic Surfaces
    Authors:  Marco Bartolini and Roberto Grau, date: 11/20/2019, view: 30, Q&A: 0
    Surface-associate motility on biotic and abiotic environments is a key mechanism used by the model bacterium Bacillus subtilis and its closest relatives (i.e., B. amyloliquefaciens, B. thuringiensis, B. cereus ...
    Super-resolution Microscopy at Cryogenic Temperatures Using Solid Immersion Lenses
    Our mechanistic understanding of cell function depends on imaging biological processes in cells with molecular resolution. Super-resolution fluorescence microscopy plays a crucial role by reporting cellular ultrastructure with 20-30 nm resolution. ...
    Leishmania Parasite Quantification by Bioluminescence in Murine Models
    Authors:  Marta Reverte and Nicolas Fasel, date: 11/20/2019, view: 31, Q&A: 0
    Leishmaniasis remains a major public health problem worldwide with a prevalence of 12 million, an incidence of 1 million persons, and 350 million people being at risk. Murine models have been largely used for studying the host-pathogen relationship ...
    Measurement of Mitotic Spindle Angle and Mitotic Cell Distance in Fixed Tissue of Drosophila Larval Brains
    Authors:  Maribel Franco and Ana Carmena, date: 11/20/2019, view: 23, Q&A: 0
    [Abstract] The positioning and the cleavage plane orientation of mitotic cells in pseudostratified epithelia (PSE) must be tightly regulated since failures in any of these processes might have fatal consequences during development. Here we present a simple method to determine the spindle orientation as well as the positioning of neuroepithelial mitotic cells ...
    Bacterial Synchronized Transfer Assays in Bone Marrow Derived Macrophages
    Authors:  Sedelia R Dominguez, Tom Kawula and Shaun P Steele, date: 11/20/2019, view: 51, Q&A: 0
    [Abstract] Merocytophagy (“mero”, Greek for partial; “cytophagy” for cell eating) is a process by which cells acquire microbes and cytosolic material through phagocytosis of a small portion of neighboring cells upon cell-cell contact. Cell-cell contact dependent transfer events can be assessed through co-incubation of differently labeled cells. With these ...
    Determination of Chromatin Accessibility in Drosophila Midgut Enterocytes by in situ 5mC Labeling
    Authors:  Eliya Bitman-Lotan, Hector Rincon-Arano, Gal Raz and Amir Orian, date: 11/20/2019, view: 20, Q&A: 0
    [Abstract] Regulation of gene expression involves dynamic changes in chromatin organization, where in many cases open chromatin structure correlates with gene activation. Several methods enable monitoring changes in chromatin accessibility, including ATAC-seq, FAIRE-seq, MNase-seq and DNAse-seq methods, which involve Next-generation-sequencing (NGS). ...
    Opto-magnetic Selection and Isolation of Single Cells
    Authors:  Loïc Binan, Joannie Roy and Santiago Costantino, date: 11/20/2019, view: 36, Q&A: 0
    [Abstract] Capturing single cells from large heterogenous populations based solely on observable traits is necessary for many cell biology applications and remains a major technical challenge. The protocol we present allows the isolation of viable and metabolically active cells selected for their shape, migration speed, contact to other cells, or ...
    Imaging Cryptococcus spp. Capsule by Differential Interference Contrast Microscopy Using Percoll®
    [Abstract] The most important virulence factor in the Cryptococcus genus is the polysaccharide capsule. This genus includes several species that cause life-threatening invasive disease. An increase in capsule thickness is important during fungal infection. The capsule is usually imaged using India ink, and crucial insights on the dynamics of its ...
    Assessing Different Ways of Bacillus subtilis Spreading over Abiotic Surfaces
    Authors:  Marco Bartolini and Roberto Grau, date: 11/20/2019, view: 30, Q&A: 0
    [Abstract] Surface-associate motility on biotic and abiotic environments is a key mechanism used by the model bacterium Bacillus subtilis and its closest relatives (i.e., B. amyloliquefaciens, B. thuringiensis, B. cereus, B. pumilus) for surface colonization and spreading across surfaces. The study of ...
    Super-resolution Microscopy at Cryogenic Temperatures Using Solid Immersion Lenses
    [Abstract] Our mechanistic understanding of cell function depends on imaging biological processes in cells with molecular resolution. Super-resolution fluorescence microscopy plays a crucial role by reporting cellular ultrastructure with 20-30 nm resolution. However, this resolution is insufficient to image macro-molecular machinery at work. A path to ...
    Leishmania Parasite Quantification by Bioluminescence in Murine Models
    Authors:  Marta Reverte and Nicolas Fasel, date: 11/20/2019, view: 31, Q&A: 0
    [Abstract] Leishmaniasis remains a major public health problem worldwide with a prevalence of 12 million, an incidence of 1 million persons, and 350 million people being at risk. Murine models have been largely used for studying the host-pathogen relationship and developing effective chemotherapies against Leishmania parasites. Thus, preclinical ...
    Isolation and Culture of Murine Hepatic Stellate Cells
    Authors:  Rucha V. Modak and Dietmar M. Zaiss, date: 11/05/2019, view: 313, Q&A: 0
    [Abstract] Hepatic stellate cells (HSCs), alternatively known as liver pericytes, can differentiate into myofibroblasts and secrete extra-cellular matrix components, thereby promoting wound healing and fibrosis. Studying HSCs can provide insights into the pathological mechanisms governing these processes. HSC isolation methods typically comprise of enzymatic ...
    Adoptive Transfer of Basophils Enriched from Mouse Spleen
    Authors:  Adrian M. Piliponsky and Stephen J. Galli, date: 11/05/2019, view: 140, Q&A: 0
    [Abstract] CD49b is a member of the integrin family, expressed on basophils, natural killer (NK) cells and a subset CD4+ T cells in the spleen. This protocol describes the adoptive transfer of basophil-enriched CD49b+ cells obtained from mouse spleens by magnetic enrichment. This protocol can be used to assess the contribution of ...



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