Mammalia

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    Protocols in Current Issue
    Looking through Brains with Fast Passive CLARITY: Zebrafish, Rodents, Non-human Primates and Humans
    Authors:  Farzad Mortazavi, Alexander J. Stankiewicz and Irina V. Zhdanova, date: 08/05/2019, view: 223, Q&A: 0
    [Abstract] Recently developed CLARITY (Clear Lipid-exchanged Acrylamide-hybridized Rigid Imaging/Immunostaining/In situ-hybridization-compatible Tis-sue-hYdrogel) technique renders the tissue transparent by removing lipids in the tissue, while preserving and stabilizing the cellular and subcellular structures. This provides effective penetration of diverse ...
    Ex vivo Analysis of DNA Repair Capacity of Human Peripheral Blood Mononuclear Cells by a Modified Host Cell Reactivation Assay
    Authors:  Katja Matt and Jörg Bergemann, date: 08/05/2019, view: 126, Q&A: 0
    [Abstract] The ability of humans to repair DNA damages decreases with increasing age. In order to be able to repair daily occurring DNA damages, it becomes more and more important to preserve repair capability of cells with aging. The preservation of DNA repair processes contributes to preventing DNA mutations and subsequently the onset of age-related ...
    Photodynamic Therapy in a 3D Model of Ovarian Cancer
    Authors:  Shubhankar Nath and Kaitlin Moore, date: 08/05/2019, view: 223, Q&A: 0
    [Abstract] Photodynamic therapy (PDT), is a clinically-approved light-based anti-cancer treatment modality in which a photoactivatable photosensitizer is irradiated with an appropriate wavelength of light to generate cytotoxic molecules to kill cancer cells. In this article, we describe an in vitro PDT protocol using a 3-dimensional (3D) model of ...
    In vitro RNA Cleavage Assays to Characterize IRE1-dependent RNA Decay
    Authors:  G. Elif Karagöz, Jirka Peschek, Peter Walter and Diego Acosta-Alvear, date: 07/20/2019, view: 830, Q&A: 0
    [Abstract] The kinase/RNase IRE1 is a key effector of the cellular response to endoplasmic reticulum stress. The RNase activity of IRE1 can be measured in cells or in the test tube. Here we describe a protocol for the in vitro cleavage and analysis of RNA substrates of IRE1. The method consists of the in vitro transcription, purification ...
    Axon-seq for in Depth Analysis of the RNA Content of Neuronal Processes
    Authors:  Jik Nijssen, Julio Aguila and Eva Hedlund, date: 07/20/2019, view: 585, Q&A: 0
    [Abstract] Neuronal processes have an RNA composition that is distinct from the cell body. Therefore, to fully understand neuronal biology in health and disease we need to study both somas, dendrites and axons. Here we describe a detailed protocol of a newly refined method, Axon-seq, for RNA sequencing of axons (and dendrites) grown in isolation using single ...
    Electron Microscopy Sample Preparation Protocol Enabling Nano-to-mesoscopic Mapping of Cellular Connectomes and Their Habitats in Human Tissues and Organs
    [Abstract] Multibeam scanning electron microscopy (multiSEM) provides a technical platform for seamless nano-to-mesoscale mapping of cells in human tissues and organs, which is a major new initiative of the U.S. National Institutes of Health. Such cross-length-scale imaging is expected to provide unprecedented understanding of relationships between cellular ...
    Total RNA Isolation from Separately Established Monolayer and Hydrogel Cultures of Human Glioblastoma Cell Line
    Authors:  Manasi P Jogalekar and Elba E Serrano, date: 07/20/2019, view: 645, Q&A: 0
    [Abstract] Astrocytoma is an invasive carcinoma occurring in the nervous system and currently lacks effective treatment options. A deeper understanding of the mechanisms of tumorigenesis and tumor progression is needed in order to develop novel therapeutic strategies. Recent advances in in vitro culture systems have demonstrated that the use of ...
    Plaque Assay to Determine Invasion and Intercellular Dissemination of Shigella flexneri in TC7 Human Intestinal Epithelial Cells
    Authors:  Atin Sharma and Andrea Puhar, date: 07/05/2019, view: 429, Q&A: 0
    [Abstract] Shigella flexneri invades the epithelial cells lining the gut lumen and replicates intracellularly. The specialized Type III Secretion System (T3SS) and its effector proteins, encoded on a large virulence plasmid, assist the bacterium to gain access to the cytosol. Thereafter Shigella disseminates to neighboring cells in an ...
    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: 508, 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 ...
    Adhesive and Cohesive Peel Force Measurement of Human Airway Mucus
    [Abstract] In health, the high-speed airflow associated with cough represents a vital backup mechanism for clearing accumulated mucus from our airways. However, alterations in the mucus layer in cystic fibrosis (CF) and chronic obstructive pulmonary disease (COPD) leads to the mucus layer adhered to the airway surfaces, representing the nidus of chronic lung ...



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