Skeletal Cryo-Biopsy

Program Line 4

Our multidisciplinary research group aims to shape the future of bone biopsies by establishing the workflow as well as the analytical technologies needed to perform spatial transcriptomics, spatial proteomics, and spatial metabolomics on cryosections of undecalcified bone. Spatial omics technologies have the power to revolutionize research and diagnostic procedures in osteology. To expand the armamentarium available to bone research and osteological diagnostics we aim to link spatial genomics technologies to bone material science.

a. Human bone biopsy sample that is routinely investigated in our group.

Our group is also running the cell biology lab of LBIO. Here we expand and cryopreserve patient’s fibroblasts and osteoblasts, isolate genomic DNA for sequence analysis, coordinate bone biopsies between clinicians and the material scientists and help establishing a biobank. With respect to research we use model cell lines for bone research and employ biochemical and cell and molecular biological methods to mainly study the molecular mechanisms underlying the generation and differentiation of osteoblasts. Specifically, we are interested in the roles of the cytoskeleton, especially of intermediate filament (IF) proteins, in these processes. At the moment we focus on the type V IF proteins nuclear lamins and on the microtubule-associated motor protein kinesin-1. In another project we study the direct conversion of human dermal fibroblasts into osteoblast-like cells, a process called osteogenic transdifferentiation. In addition, in selected cases we aim to understand the impact of potential pathologic mutations identified by the Department of Medical Genetics at the Hanusch Hospital in patients exhibiting a diseased bone phenotype on cellular and molecular mechanisms using patient’s samples such as dermal fibroblasts and bone and skin biopsies.

a. Cell cultures of murine bone-marrow derived mesenchymal stromal cells (D1 cells) induced for osteogenic differentiation for one and fourteen days, respectively, and stained with Alizarin red to detect deposited mineral.