Start of funding 01.01.2026

Tracking Microbial Messages on Their Way to the Brain

Prof. Dr. Claudia Günther
Friedrich-Alexander-University of Erlangen-Nuremberg
Universitätsklinikum Erlangen, Medizin 1

Dr. Johannes Schlachetzki
University of California, San Diego
Department of Neurosciences



Our research project investigates direct communication and molecular links between the gut microbiome and the brain. We have previously shown that bacterial extracellular vesicles (bEVs) – small, membrane-bound carriers of molecular cargo – are able to reach the brain. Building on this discovery, the project aims to elucidate how these gut-derived bacterial messengers modulate immune processes within the brain. Using next-generation sequencing in combination with advanced bioinformatics, we will map transcriptional and spatial changes in resident brain immune cells following bEV-exposure. This interdisciplinary approach will provide new insights into the contribution of gut microbes to neuroinflammation and -pathology. The project combines expertise in microbiology, neuroimmunology, and genomics, fostering innovation and strengthening long-term collaboration between FAU and UCSD.