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Displaying results 181 to 190 of 231.
Nano Infection Biology
Viruses are nanoscale entities. Despite their size and low complexity, they efficiently enter host cells leading to infection and reprogramming of cellular functions. The critical processes involve only a handful of viral and cellular proteins. Yet this contact is critical for the outcome of infection and the cellular immune response. We look at these processes to understand which cellular processes are stimulated by viruses and how the host cell interprets an infecting virus at the molecular level. At the scale of single viruses, these processes, their dynamics and structural conditions remain mostly unclear. We thus use advanced microscopy techniques, which allow us to visualize viral and cellular nanostructures during the infection process.
Molecular Cell Biology
The cytoskeleton is responsible for mechanical stabilisation of the cell, for its motility and intracellular transport processes as well as for maintenance and change of its overall shape. The research group Molecular Cell Biology focusses on one specific part of the so called cytoskeleton: the actin cytoskeleton. The dynamics and turnover of filaments of the actin cytoskeleton are particularly relevant for effective immune responses, and are also frequently targeted by pathogens. Understanding the molecular mechanisms mediating assembly and disassembly of this filament system is thus among the main goals of Klemens Rottner and his team.
Molecular Structural Biology
Combating infectious diseases depends critically on a deep understanding of the underlying molecular processes. Structural biology plays a crucial role in advancing biomedicine by providing valuable insights into the structure, function, and interactions of biological macromolecules at the atomic and molecular level. It combines state-of-the-art techniques such as X-ray crystallography, nuclear magnetic resonance (NMR) spectroscopy and cryo-electron microscopy (cryo-EM) as well as advanced computer-based structure prediction methods to elucidate and analyze the three-dimensional structures of proteins, nucleic acids, and other biomolecules. Thus structural biology plays a critical role in infection research by providing a precise view on virulence factors, host-pathogen interactions, and the mechanisms of pathogenesis and host defense, paving the way towards the development of new anti-infectives and vaccines.
Molecular Bacteriology
Hospital-acquired infections are a major challenge and cause suffering, incapacity and death. In many cases the pathogens are resistant to antibiotics and, therefore, very difficult to combat. Read more about how bacteria join forces and what the researchers can do to avoid that. The group Molecular Bacteriology is based at the HZI and the TWINCORE in Hannover.
HZI spin-offs at a glance
HZI spin-offs at a glance Scientists at the HZI regularly and successfully transfer their results and technologies into start-ups and spin-offs. Here we present some of the companies. Leopard Biosciences GmbH SORMAS Foundation gGmbH InSCREENeX GmbH MyxoTech…
About HIRI
© Adobe Stock / Christoph Burgstedt Increasing antibiotic resistance, chronic infections and emerging pathogens pose major challenges for the public health system. While the central importance of RNA in regulatory and sensory cell processes has become…
Laboratory of Transmission Immunology
Transmission of viruses is only possible during a specific time frame after infection: we can call this the “window of transmission”. A major gap in mitigating (e.g., airborne) transmission and closing this window quickly is the lack of understanding of critical immune determinants of efficient transmission. To be able to close the window of transmission through the design of better mitigation strategies, we develop a mechanistic understanding of the spatial and longitudinal interplay between virus tropism, innate and adaptive immune responses, changes in host physiology, and exhalation or shedding of infectious virus in droplets or fluids.
Tuberculosis
Tuberculosis – a silent pandemic © HZI/Manfred Rohde Tuberculosis Tuberculosis is one of the „big three“ infectious diseases, together with AIDS and Malaria. In Europe, tuberculosis is almost forgotten, the times of the “The Lady of the Camellias” and…
HZI
Understanding Infections - Fighting Pathogens The HZI: one interdisciplinary center - six sites About the HZI A research facility of the Helmholtz Association What are you looking for? Popular topics: Press Career Research groups HUMAN MICROSTAR Open Call:…
Experimental Immunology
Immune cell populations are characterized by a high degree of heterogeneity to enable efficient and specialized responses to the diverse set of pathogens. This is particularly true for cells of the adaptive immune system, but also innate immune cell populations are heterogeneous and can adapt to different environmental conditions. Adaptation of immune cells is often associated with epigenetic alterations that lead to the fixation of gene expression patterns, finally resulting in cells with highly specialized fates, phenotypes and functional properties.