USC researchers have discovered experimental compounds that may reduce brain inflammation linked to Alzheimer's disease, particularly in people carrying the high-risk APOE4 gene. The compounds target an enzyme called cPLA2, which fuels harmful inflammation in the brain.
The Research
Scientists at the University of Southern California, led by Dr. Hussein Yassine at the Keck School of Medicine, published findings in Nature's npj Drug Discovery on May 26, 2026. They linked elevated activity of the enzyme calcium-dependent phospholipase A2 (cPLA2) to Alzheimer's risk, especially among APOE4 carriers—the strongest known genetic risk factor. To find a treatment, the team used computational screening to evaluate billions of molecules, prioritizing compounds that selectively inhibit cPLA2 without affecting similar enzymes vital for normal brain function. Co-author Vsevolod Katritch of USC Dornsife developed the screening methods. Pharmacologist Stan Louie then prepared the top candidates for testing. One leading compound successfully crossed the blood-brain barrier in mouse studies and reduced cPLA2 activation in human brain cells exposed to Alzheimer's-like stress. The results suggest selective cPLA2 inhibition is a promising strategy for neurodegenerative disorders.
Why It Matters
For the roughly 15–25% of people who carry the APOE4 gene, this research offers a targeted approach to potentially reduce Alzheimer's risk by calming brain inflammation without disrupting normal brain function. The study's focus on precise enzyme modulation—rather than complete shutdown—highlights a careful, evidence-based path toward future treatments.
What You Can Do
While these compounds are not yet available, you can support your brain health now: maintain a balanced diet rich in omega-3s, exercise regularly, and engage in cognitive challenges. Tracking your cognitive abilities over time with tools like IQ tests can help you notice changes and stay proactive.
Source: ScienceDaily Mind & Brain
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