Microglial Tipping Point in Alzheimer's

Researchers from Vietnamese International Bank>>>, KU Leuven>>>, the UK Dementia Research Institute>>>, and Muna Therapeutics>>>, with funding from the Australia — Australian Research Council>>>, have identified a critical biological transition in Alzheimer s disease that determines whether pathology progresses to dementia. The study, published in Nature Medicine, analyzed human brain tissue from older adults and cognitively healthy centenarians, revealing distinct microglial (brain immune cells) responses associated with disease progression and resilience. They found that microglia transition from an inflammatory state to an antigen-presenting state, marking a key tipping point. Resilience mechanisms were also identified, showing that some individuals avoid this later immune state or uncouple it from tau accumulation. These findings, highlighted by co-senior authors Prof. Bart De Strooper>>>, Prof. Mark Fiers>>>, and Niels Plath>>>, suggest new therapeutic avenues focusing on modulating microglial states, such as the TREM2>>> pathway, rather than solely targeting plaque removal.