Microglia-derived nanovesicles synchronize macroautophagy and chaperone-mediated autophagy for Alzheimer's disease therapy.

ABSTRACT: Dysregulated autophagy is a hallmark of Alzheimer's disease (AD), yet the extent of impairment in macroautophagy and chaperone-mediated autophagy (CMA) remains unclear. Here, we show that both pathways are disrupted in AD model mice, preceding β-amyloid accumulation and driving disease progression. However, therapeutic autophagy modulation is severely restricted by the blood-brain barrier (BBB). To overcome this, we developed Microglia-Liposome Fusion Extrusion (MiLi-FE), a method to engineer microglia-derived nanovesicles (AR@ENV) for the codelivery of AR7 (a CMA inducer) and rapamycin (a macroautophagy inducer). Leveraging its microglial membrane origin, AR@ENV effectively crosses the BBB and targets inflammatory sites in the AD brain, where it is internalized by neurons. Once inside, th

SUBMITTER: Li M 

PROVIDER: S-EPMC12583606 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature