Physiological Chemistry

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Nicolai Siegel

We are part of the Faculty of Veterinary Medicine and associated with the department of Experimental Parasitology (Markus Meissner). Our lab is located at the department of Physiological Chemistry (Andreas Ladurner) at the Biomedical Center Munich (BMC).


The trypanosome epigenome in gene regulation and immune evasion

Using the protozoan parasite Trypanosoma brucei, the causative agent of African sleeping sickness, our research aims to elucidate some of the very fundamental and evolutionarily conserved mechanisms of chromatin formation. At the same time we try to understand how changes in chromatin structure can help the parasite to evade the host immune response via antigenic variation. To this end we have established numerous system-wide approaches in T. brucei, including ribosome-profiling, high-resolution ChIP-seq and Hi-C technology as well as a mass spectrometry-based approach to quantify levels of histone acetylation. Using these techniques, we are able to investigate how different chromatin structures are established at specific loci along the genome, how they are formed across the nucleus in 3 dimensions and how they affect gene expression.