MTOR Hyperactivation Suppresses Autophagy and Drives Neuroinflammation in Schizophrenia

Schizophrenia remains a complex clinical challenge characterized by heterogeneous symptoms and a pathophysiology that extends beyond simple neurotransmitter imbalances. While the dopamine hypothesis has long dominated the field, emerging evidence suggests that systemic immune dysregulation and chronic low-grade inflammation play a significant role in the disease progression [1, 2]. Recent investigations into neurodegenerative and psychiatric conditions have increasingly focused on the microbiota-gut-brain axis and its influence on glial function, highlighting how peripheral immune signals can translate into central nervous system pathology [3, 4]. Central to these processes is the disruption of cellular homeostasis, particularly the autophagy-lysosome system (the intracellular degradation process that removes damaged proteins and organelles), which is essential for maintaining neuronal integrity [5, 6]. Although phenothiazine derivatives and other antipsychotics may incidentally modulate these pathways, the precise interplay between metabolic signaling and inflammatory cascades in the schizophrenic brain has remained poorly defined [7]. A new study now clarifies the mechanistic link between nutrient-sensing pathways and the persistent neuroinflammation observed in this patient population.