Mammalia

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    Protocols in Current Issue
    Isolation of Lipid Rafts from Cultured Mammalian Cells and Their Lipidomics Analysis
    Authors:  Nigora Mukhamedova, Kevin Huynh, Hann Low, Peter J. Meikle and Dmitri Sviridov, date: 07/05/2020, view: 459, Q&A: 0
    [Abstract] Lipid rafts are distinct liquid-ordered domains of plasma membranes of most eukaryotic cells providing platform for signaling pathways. Lipid composition of rafts is critical for their structural integrity and for regulation of signaling pathways originating from rafts. Here we provide a protocol to isolate lipid rafts from cultured human and ...
    Assessments of HLA-I Specificities of Anti-HLA-I Monoclonal Antibodies Using Solid Phase Bead Arrays
    Authors:  Anita J. Zaitouna, Daniel S. Ramon and Malini Raghavan, date: 06/20/2020, view: 499, Q&A: 0
    [Abstract] Human leukocyte antigen class I (HLA-I) molecules are a group of structurally-related cell surface proteins with a high degree of variability within the population. While only up to six variants are expressed in an individual person, the whole population contains thousands of different variants. The ability to distinguish specific variants is ...
    Isolation and High Throughput Flow Cytometric Apoptosis Assay of Human Neutrophils to Enable Compound Library Screening
    Authors:  K. D. Herman, A. Rahman and L. R. Prince, date: 06/05/2020, view: 571, Q&A: 0
    [Abstract] The study of human neutrophils in vitro is challenging due to their short half-life and propensity for activation. However, with careful handling and manipulation in the laboratory, they can be a powerful tool to investigate immune responses in health and disease. Here we describe a method for the isolation of human neutrophils from ...
    Methodology for in vitro Assessment of Human T Cell Activation and Blockade
    Authors:  Joseph R. Podojil, Igal Ifergan, Ming-Yi Chiang, Joshua J. Meeks and Stephen D. Miller, date: 06/05/2020, view: 635, Q&A: 0
    [Abstract] Methods to test both the functionality and mechanism of action for human recombinant proteins and antibodies in vitro have been limited by multiple factors. To test the functionality of a recombinant protein or antibody, the receptor, the receptor-associated ligand, or both must be expressed by the cells present within the in vitro ...
    Flow Cytometry Measurement of Glucocerebrosidase Activity in Human Monocytes
    Authors:  Laura P. Hughes, Glenda M. Halliday and Nicolas Dzamko, date: 04/05/2020, view: 683, Q&A: 0
    [Abstract] Glucocerebrosidase (GCase) is an important enzyme for the metabolism of glycolipids. GCase enzyme deficiency is implicated in human disease and the efficient measurement of GCase activity is important for evaluating the efficacy of therapeutics targeting this enzyme. Existing approaches to measure GCase activity include whole blood mass ...
    Optogenetic Tuning of Ligand Binding to The Human T cell Receptor Using The opto-ligand-TCR System
    [Abstract] T cells are one major cell type of the immune system that use their T cell antigen receptor (TCR) to bind and respond to foreign molecules derived from pathogens. The ligand-TCR interaction half-lives determine stimulation outcome. Until recently, scientists relied on mutating either the TCR or its ligands to investigate how varying TCR-ligand ...
    Quantifying HIV-1-Mediated Gut CD4+ T Cell Death in the Lamina Propria Aggregate Culture (LPAC) Model
    [Abstract] Gut CD4 T cells are major targets of HIV-1 and are massively depleted early during infection. To better understand the mechanisms governing HIV-1-mediated CD4 T cell death, we developed the physiologically-relevant Lamina Propria Aggregate Culture (LPAC) model. The LPAC model is ideal for studying CD4 T cell death induced by clinically-relevant ...
    Ribonucleoprotein Immunoprecipitation (RIP) Analysis
    Authors:  Jennifer L. Martindale, Myriam Gorospe and Maria L. Idda, date: 01/20/2020, view: 1221, Q&A: 0
    [Abstract] RNAs and RNA-binding proteins (RBPs) can interact dynamically in ribonucleoprotein (RNP) complexes that play important roles in controlling gene expression programs. One of the powerful ways to investigate changes in the association of RNAs with an RBP of interest is by immunoprecipitation (IP) analysis of native RNPs. RIP (RNP ...
    cDNA Display Mediated Immuno-PCR (cD-IPCR): A Novel PCR-based Antigen Detection Method
    Authors:  Chathuni Jayathilake, Takuya Terai and Naoto Nemoto, date: 12/20/2019, view: 1654, Q&A: 0
    [Abstract] Immuno-PCR (IPCR) is a powerful method in antigen detection where a PCR-amplifiable DNA reporter is conjugated to a specific antibody or an aptamer for the target molecule. In the development and application of IPCR, successful conjugation of a protein (an antibody) with a reporter DNA becomes challenging. To address this issue, we recently ...
    Characterization of Biological Motion Using Motion Sensing Superpixels
    Authors:  Felix Y. Zhou, Carlos Ruiz-Puig, Richard P. Owen, Michael J. White, Jens Rittscher and Xin Lu, date: 09/20/2019, view: 1520, Q&A: 0
    [Abstract] Precise spatiotemporal regulation is the foundation for the healthy development and maintenance of living organisms. All cells must correctly execute their function in the right place at the right time. Cellular motion is thus an important dynamic readout of signaling in key disease-relevant molecular pathways. However despite the rapid ...



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