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Microtubules control migrating cells

Scientists from the Cluster of Excellence ImmunoSensation and the Institute of Science and Technology Austria published their recent findings about microtubules controling migrating cells in the Journal of Cell Biology. Cells need to navigate throughout the body. How they find their right way and how they adapt their body size to moving into the right direction is poorly understood. Here, scientists demonstrate that spatially distinct microtubule dynamics regulate amoeboid cell migration by locally promoting the retraction of protrusions. Prof. Eva Kiermaier is member of the Cluster of Excellence ImmunoSensation2.


The group of Eva Kiermaier focuses on the contribution of the cytoskeleton during innate and adaptive immune responses. Dendritic cells (DCs) represent the most potent antigen presenting cells of the innate immune system. They are key mediators for the induction of protective immunity as well as maintenance of self-tolerance. As such, DCs represent an outstanding population of cells, which mediate three fundamentally important tasks: antigen capture and presentation, migration and T cell activation. The group studies how cytoskeletal components, in particular centrosomes and microtubules, impact immune cell effector functions such as antigen presentation and migration and their behavior upon lymphocyte cell-cell interactions.

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Focus on the Guardians of the Antibody Response

For the immune system to effectively combat pathogens, antibody responses must be precisely controlled. So-called follicular regulatory T cells (Tfr cells) play a key role in this process by limiting excessive immune responses and helping to maintain immune tolerance. Researchers at the University Hospital Bonn (UKB) and the University of Bonn have now developed a robust laboratory method that allows Tfr cells to be generated from precursor cells and studied in a targeted manner. The results were recently published in the journal Cellular & Molecular Immunology.
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When the map needs an update

Every time we move through a familiar environment, the hippocampus consults an internal map, a detailed spatial representation that is built up through repeated experience. But what happens when something unexpected occurs on a well-known route? Researchers at the UKB and the University of Bonn were able to demonstrate in a mouse model that the brain does not redraw its maps from scratch. Instead, it annotates them: preserving the underlying spatial layout while overlaying new information on top of the existing map. Their findings have now been published in the journal PNAS.
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Immune cells in the liver help pigeons navigate

How do pigeons find their way home safely over distances of many kilometers? A research team from the University Hospital Bonn (UKB), the University of Bonn, the University of Duisburg-Essen, and the Max Planck Institute for Behavioral Biology has now discovered a previously unknown mechanism: specific immune cells in the liver may help the birds detect the Earth’s magnetic field. The findings have now been published in the journal Science.
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