Im Mai dieses Jahres in JoVE

Protocol for Recombinant RBD-based SARS Vaccines: Protein Preparation, Animal Vaccination and Neutralization Detection Lanying Du, Xiujuan Zhang, Jixiang Liu, Shibo JiangLindsley F. Kimball Research Institute, New York Blood Center This protocol describes a general procedure for studying recombinant receptor-binding domain (RBD)-based subunit vaccines against SARS. It includes methods for transfection and expression of RBD protein in 293T cells, immunization of mice with RBD and detection of neutralization activity of mouse sera using an established SARS pseudovirus neutralization assay. Quantitative Visualization and Detection of Skin Cancer Using Dynamic Thermal Imaging Cila Herman, Muge Pirtini CetingulDepartment of Mechanical Engineering, The Johns Hopkins University We demonstrated that malignant pigmented lesions with increased metabolic activity generate quantifiable amounts of heat and the measurement of the transient thermal response of the skin to a cooling excitation allows quantitative identification of melanoma and other skin cancers (vs. non-proliferative nevi) at an early stage of the disease. GUS Based Cell Death Assay Mehdi Kabbage, Maria Ek-Ramos, Martin Dickman Programmed cell death assays commonly used in mammalian systems such as DNA laddering or TUNEL assays, are often difficult to reproduce in plants. In combination with a GUS reporter system, we propose a rapid, plant based transient assay to analyze the potential death properties of specific genes. Isolation of Drosophila melanogaster Testes Phillip D. Zamore, Shengmei MaDepartment of Biochemistry & Molecular Pharmacology and Howard Hughes Medical Institute, University of Massachusetts Medical School Drosophila melanogaster testes can be rapidly and efficiently isolated from adult males using dissecting needles. With practice, one can readily isolate in one or two days an amount of testes sufficient for the analysis of DNA or RNA by high throughput sequencing or more traditional molecular biology methods or of protein for antibody- or enzyme-based assays. Seven Steps to Stellate Cells Patrick Maschmeyer, Melanie Flach, Florian WinauImmune Disease Institute, Program in Cellular and Molecular Medicine at Children's Hospital, Department of Pathology, Harvard Medical School Here we describe a method for the isolation of hepatic stellate cells from mouse liver. For stellate cell purification, mouse livers are digested in situ and in vitro by pronase-collagenase treatment prior to density gradient centrifugation. This technique yields highly pure hepatic stellate cells. A Protocol for Collecting and Staining Hemocytes from the Yellow Fever Mosquito Aedes aegypti Amina A. Qayum, Aparna TelangDepartment of Biology, University of Richmond A simplified yet accurate method to collect and stain mosquito hemocytes is described. Our method combines the simplicity of perfusion with the accuracy of high injection techniques to isolate clean preparations of hemocytes in Aedes mosquitoes. This method facilitates studies requiring knowledge of the types of hemocytes and their abundance. Parabolic Flight Protocol Vera Brümmer1, Stefan Schneider1, Heiko Strüder1, Heather Carnahan2, Chris D. Askew31Institute of Movement and Neurosciences, German Sport University Cologne, 2Deptartment of Surgical Skills, University of Toronto, 3University of the Sunshine Coast The effect of weightlessness and hypergravity on both hemodynamic and electrophysiological processes in the brain is going to be followed during parabolic flight by EEG and NIRS techniques. A feasibility study of a more complex experiment, which is planned to carry out during medium- and long-term space flight. Generation of Neural Stem Cells from Discarded Human Fetal Cortical Tissue Jie Lu1, Laurent C. Delli-Bovi2, Jonathan Hecht3, Rebecca Folkerth4, Volney L. Sheen11Department of Neurology, Beth Israel Deaconess Medical Center, 2Department of Obstetrics and Gynecology, Brigham and Women's Hospital, 3Department of Pathology, Beth Israel Deaconess Medical Center, 4Department of Pathology, Division of Neuropathology, Brigham and Women's Hospital A simple and reliable method on isolation and culture of neural stem cells from discarded human fetal cortical tissue is described. Cultures derived from known human neurological disorders can be used for characterization of pathological cellular and molecular processes, as well as provide a platform to assess pharmacological efficacy.