Immunology

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    Protocols in Current Issue
    Bacterial Lawn Avoidance and Bacterial Two Choice Preference Assays in Caenorhabditis elegans
    Authors:  Jogender Singh and Alejandro Aballay, date: 05/20/2020, view: 415, Q&A: 0
    [Abstract] Physical avoidance of pathogens is a crucial defense strategy used by the host to reduce pathogen infection. Hosts display the use of multiple strategies to sense and avoid pathogens, ranging from olfaction to sensing of damage caused by pathogen infection. Understanding various mechanisms of pathogen avoidance has the potential to uncover ...
    HIV-CRISPR: A CRISPR/Cas9 Screening Method to Identify Genes Affecting HIV Replication
    Authors:  Ferdinand Roesch and Molly OhAinle, date: 05/05/2020, view: 540, Q&A: 0
    [Abstract] Screening with CRISPR/Cas9 technology has already led to significant discoveries in the fields of cancer biology, cell biology and virology. Because of the relatively low false discovery rates and the ability to perform high-throughput, pooled approaches, it has rapidly become the assay of choice for screening studies, including whole-genome ...
    Zebrafish Bacterial Infection Assay to Study Host-Pathogen Interactions
    Authors:  Faiza Basheer, Clifford Liongue and Alister C Ward, date: 03/05/2020, view: 529, Q&A: 0
    [Abstract] The study of host-pathogen interactions has improved our understanding of both pathogenesis and the response of the host to infection, including both innate and adaptive responses. Neutrophils and macrophages represent the first line of innate host defense against any infection. The zebrafish is an ideal model to study the response of these cells ...
    Preparation of Red Palm Weevil Rhynchophorus Ferrugineus (Olivier) (Coleoptera: Dryophthoridae) Germ-free Larvae for Host-gut Microbes Interaction Studies
    Authors:  Abrar Muhammad, Prosper Habineza, Youming Hou and Zhanghong Shi, date: 12/20/2019, view: 909, Q&A: 0
    [Abstract] Red palm weevil (RPW), Rhynchophorus ferrugineus Olivier, is a devastating pest of palm trees worldwide. RPW gut is colonized by diverse bacterial species which profoundly influence host development and nutritional metabolism. However, the molecular mechanisms behind the interactions between RPW and its gut microbiota remain mostly ...
    Adoptive Transfer of Basophils Enriched from Mouse Spleen
    Authors:  Adrian M. Piliponsky and Stephen J. Galli, date: 11/05/2019, view: 822, 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 ...
    Amplex Red Assay for Measuring Hydrogen Peroxide Production from Caenorhabditis elegans
    Authors:  Ozgur Karakuzu, Melissa R. Cruz, Yi Liu and Danielle A. Garsin, date: 11/05/2019, view: 1805, Q&A: 0
    [Abstract] Reagents such as Amplex® Red have been developed for detecting hydrogen peroxide (H2O2) and are used to measure the release of H2O2 from biological samples such as mammalian leukocytes undergoing the oxidative burst. Caenorhabditis elegans is commonly used as a model host in the study ...
    Platelet Isolation and Activation Assays
    Authors:  Laura C. Burzynski, Nicholas Pugh and Murray C.H. Clarke, date: 10/20/2019, view: 1765, Q&A: 0
    [Abstract] Platelets regulate hemostasis and are the key determinants of pathogenic thrombosis following atherosclerotic plaque rupture. Platelets circulate in an inactive state, but become activated in response to damage to the endothelium, which exposes thrombogenic material such as collagen to the blood flow. Activation results in a number of responses, ...
    Gentamicin Protection Assay to Determine the Number of Intracellular Bacteria during Infection of Human TC7 Intestinal Epithelial Cells by Shigella flexneri
    Authors:  Atin Sharma and Andrea Puhar, date: 07/05/2019, view: 2259, Q&A: 0
    [Abstract] Shigella flexneri is an intracellular bacterial pathogen that gains access to the gut epithelium using a specialized Type III Secretion System (T3SS). Various determinants mediating this invasive infection have been experimentally verified using the classical gentamicin protection assay presented here. In this assay epithelial cell lines ...
    A Highly Sensitive Anion Exchange Chromatography Method for Measuring cGAS Activity in vitro
    Authors:  Andreas Holleufer and Rune Hartmann, date: 10/20/2018, view: 2330, Q&A: 0
    [Abstract] Cyclic GMP-AMP synthase (cGAS) is a pattern recognition receptor (PRR) that senses double stranded DNA (dsDNA) in the cytosol and this leads to the activation of stimulator of interferon genes (STING) via the secondary messenger 2’3’-cyclic GMP-AMP (2’3’-cGAMP). STING then recruits TANK binding kinase 1 (TBK-1) and this complex can phosphorylate ...
    Platelet Migration and Bacterial Trapping Assay under Flow
    Authors:  Shuxia Fan, Michael Lorenz, Steffen Massberg and Florian Gaertner, date: 09/20/2018, view: 2857, Q&A: 0
    [Abstract] Blood platelets are critical for hemostasis and thrombosis, but also play diverse roles during immune responses. We have recently reported that platelets migrate at sites of infection in vitro and in vivo. Importantly, platelets use their ability to migrate to collect and bundle fibrin (ogen)-bound bacteria accomplishing ...



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