Glial LRRK2 upregulation in the gut may weaken the intestinal barrier in early Parkinson's disease
- Asks whether raised LRRK2 kinase in enteric glia connects gut gliosis and inflammation in Parkinson's disease to a leaky intestinal epithelial barrier.
- In 9-month-old A53T α-synuclein mice, colonic α-synuclein buildup, gut dysfunction and more LRRK2-positive glia appeared before brain pathology or central neuroinflammation.
- Barrier abnormalities and more colonic autophagosomes were seen; glia–epithelial co-cultures probed glial LRRK2 effects, with secretory autophagy as the proposed route.
💡 Points Based on the abstract
Gut-first timing in A53T mice is appealing, but it's an overexpression model, so I wouldn't read it as human early PD. Before touching a LRRK2 inhibitor here, I'd want kinase activity (pRab10, not just protein level) tied to the barrier defect, and rescue by inhibition in the glia-epithelial co-culture. Upregulation alone is correlative, and the secretory autophagy link looks inferred.