Picture of two people in a microscopy laboratory
© EIMI

Intravital Molecular Imaging Lab (Prof. Friedemann Kiefer)

We are interested in the morphogenetic processes that shape and maintain the vascular systems, especially lymphatic vessels, during development but also in healthy and diseased adult life. In particular, we are interested by the interplay of blood and lymphatic vessels, tissue oxygenation (or the lack thereof i.e. hypoxia) and leukocytes and its relevance for organ function in various developmental and pathological settings. Our work rests on the intense use and refinement of cutting edge microscopy in combination with reporter models to visualize the individual actors of this ménage à trois within the context of the intact tissue or even dynamically in the living organism.

  • Team

  • Projects

    Imaging of inflammation using microscopy (left) and whole-body imaging (PET-CT, right)
    © Uni MS – AG Kiefer/AG Schäfers

    Collaborative Research Centre “inSight – Multiscale imaging of organ-specific inflammation” (CRC 1450)

    In this collaborative research project, we focus on the question of how the body regulates inflammation in different organs and, to this end, develop a specific imaging methodology that brings together information from single cells to entire organisms.

    Spokesperson: Michael Schäfers (EIMI), Deputy Spokesperson: Friedemann Kiefer (EIMI)
    Project term: 01/2025 - 12/2028
    Project number: CRC/1450 | DFG

     

    Atherom
    © EIMI

    Assessing macrophage activation, migration and fate during a novel anti-atherosclerotic intervention

    Atherosclerosis is a chronic inflammatory disease of the vessel wall characterized by lipid accumulation and macrophage infiltration, which is attributed to hypercholesterolemia, smoking and obesity. Ultimately, atherosclerosis may cause thrombotic events making it the leading cause of ischemic heart disease, stroke and peripheral vascular disease. In this research project, novel reagents to influence the polarization of macrophages are tested as a potential tools to change macrophage migration and thereby attenuate atherosclerotic plaque formation in mouse models.

    Principal investigators: Friedemann Kiefer (EIMI)
    Project term: 01/2020 - 12/2022
    Project number: Kief1/019/20 | Medical Faculty, University of Münster

    Distribution of immune cells in the body of a mouse, imaged with optical imaging
    © S. Gran & L. Honold et al./Theranostics 2018(8)

    Immune-Image

    In this project, we develop methods for monitoring immune cells before, during and after immune treatment. Initially, we will look at these processes in animal models for different diseases – with the aim of translating the results and methods to patients mid-term enabling us to establish image-guided immunotherapies with improved efficacy in diseases such as cancer or inflammation.

    Coordinator: Albert D. Windhorst (Amsterdam University Medical Centre, the Netherlands)
    EIMI members involved as partners: Michael Schäfers, Andreas Jacobs, Andreas Faust, Sven Hermann, Friedemann Kiefer, Sabine Stötzer
    Project term: 10/2019 - 09/2024
    Project number: Innovative Medicines Initiative 2 Joint Undertaking, grant agreement No 831514

    Lymphatic vessel development in mouse embryo
    © EIMI

    Morphogenetic Mechanisms During Lymphatic Vessel Formation

    Lymphatic vessels are indispensable for tissue homeostasis and implicated in the development of several pathologies including edema, hypertension, chronic inflammation and tumour metastasis. Presently there is no pharmacological treatment for malfunctions of the lymphatic vessel system. Many regenerative processes would greatly benefit, if it were possible to stimulate and ensure proper lymph vessel formation. This requires a detailed understanding of the molecular regulation of their underlying morphogenetic mechanisms which we study here during mouse development.

    Principal investigators:  Friedemann Kiefer (EIMI)
    Project term: 01/2018 - 12/2021
    Project number: CRC/1348 B07 | DFG Collaborative Research Centre / 1348 “Dynamic Cellular Interfaces”

  • Publications