Cell

TREM2 helps brain immune cells stay healthy in Alzheimer's disease

Updated

Abstract

Elevated risk of developing Alzheimer's disease is associated with hypomorphic variants of TREM2.

  • Microglia in Alzheimer's patients with TREM2 risk variants exhibit an abundance of autophagic vesicles.
  • TREM2-deficient mice with Alzheimer's-like pathology also show increased autophagic vesicles.
  • Defective signaling through the mammalian target of rapamycin (mTOR) is linked to abnormal autophagy and affects energy levels.
  • Restoration of metabolic function and autophagy in vitro was achieved using Dectin-1 and cyclocreatine.
  • Dietary cyclocreatine reduced autophagy and improved microglial clustering and neuronal health in TREM2-deficient mice.

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