For the first time, the Max Planck Institute of Psychiatry and the University Hospital Bonn have been able to directly link a stress factor in the brain to the cell’s recycling system and obesity. This could enable a completely new approach to treat stress-induced metabolic diseases.

Researchers have long known that the protein FKBP51 is associated with depression and anxiety disorders. FKBP51 is involved in the regulation of the stress response system—if this is disturbed, mental illnesses can develop. The researchers at the Max Planck Institute (MPI) of Psychiatry and the University Hospital Bonn (UKB) have now discovered a surprising new role for this protein: it acts as a molecular link between the stress response system and metabolic processes in the body. The central mechanism is autophagy, the cellular waste recycling process.

“Autophagy is the cell’s recycling program, which gets rid of old or damaged proteins. As such, it can counteract aging processes and—as we have now been able to show—reduce obesity,” explains Nils Gassen, Head of the Neurohomeostasis Research Group at the UKB, one of the project leaders.

Mathias Schmidt, Research Group Leader at the MPI of Psychiatry, adds: “The fact that the stress factor FKBP51 in the brain is a master regulator of autophagy and thus obesity reveals a number of new intervention possibilities, from pharmacological manipulation of FKBP51 to autophagy-inducing fasting diets or sports programs.”

Stress resilience for everyone

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