Tyrolean Cancer Research Institute 3 articles published in JoVE Developmental Biology Detection of Residual Donor Erythroid Progenitor Cells after Hematopoietic Stem Cell Transplantation for Patients with Hemoglobinopathies Roman Crazzolara1, Gabriele Kropshofer1, Michael Steurer2, Sieghart Sopper2,3, Wolfgang Schwinger4 1Department of Pediatrics, Medical University Innsbruck, 2Department of Internal Medicine V (Hematology & Oncology), Medical University Innsbruck, 3Tyrolean Cancer Research Institute, 4Department of Pediatrics, Medical University Graz Quantification of donor-derived cells is required to monitor engraftment after stem cell transplantation in patients with hemoglobinopathies. A combination of flow cytometry-based cell sorting, colony formation assay, and subsequent analysis of short tandem repeats may be used to assess the proliferation and differentiation of progenitors in the erythroid compartment. Cancer Research Harnessing the DNA Dye-triggered Side Population Phenotype to Detect and Purify Cancer Stem Cells from Biological Samples Maximilian Boesch*1,2,3, Elisabeth Hoflehner2,3, Dominik Wolf2,3,4, Guenther Gastl2, Sieghart Sopper*2,3 1Institute of Immunobiology, Kantonsspital St. Gallen, 2Internal Medicine V, Medical University of Innsbruck, 3Tyrolean Cancer Research Institute (TKFI), 4Medical Clinic III, Oncology, Hematology, Immunoncology and Rheumatology, University Clinic Bonn (UKB) Methods allowing the characterization and isolation of stem cell populations from biological samples are critical for the advance of stem cell-targeted treatments in cancer and beyond. Here, we provide a detailed protocol for cancer stem cell isolation using the dye-triggered side population phenotype. Medicine Establishment of a Human Multiple Myeloma Xenograft Model in the Chicken to Study Tumor Growth, Invasion and Angiogenesis Agnieszka Martowicz*1,4, Johann Kern*1,2, Eberhard Gunsilius1, Gerold Untergasser1,3 1Department of Internal Medicine V, Innsbruck Medical University, 2Oncotyrol GmbH, 3Tyrolean Cancer Research Institute, 4Division of Vascular Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institute Human multiple myeloma (MM) cells require the supportive microenvironment of mesenchymal cells and extracellular matrix components for survival and proliferation. We established an in vivo chicken embryo model with engrafted human myeloma and mesenchymal cells to study effects of cancer drugs on tumor growth, invasion and angiogenesis.