Tau Disrupts Mitochondria via Reverse Electron Flow
Get the Health newsletter
Daily health & science — research, biotech, public health, the studies worth knowing. Free.
- Stanford scientists found tau disrupts mitochondria by triggering reverse electron transport, sending electrons flowing in the opposite direction of their usual microscopic relay race and generating reactive oxygen species, cellular stress, and inflammation.
- Blocking reverse electron transport reversed many of the harmful effects and improved learning and memory in flies and mice, according to the study.
- Analysis of human cells grown in the lab and patient brain tissue suggests blocking the retrograde flow of electrons could make neurons healthier, though the source notes it remains unclear whether the same will hold true in people.
- Two of the study's authors have launched a biotech startup to pursue this therapeutic approach.
- Tau has become a focal target in Alzheimer's drug development, and this study describes a previously unknown mechanism for the protein's role in neurodegeneration.
Why it matters: Tau has been a major target in Alzheimer's drug development where progress has been slow; this study surfaces a concrete, druggable mechanism — reverse electron transport in mitochondria — that already responds to intervention in flies and mice, giving researchers and a new biotech startup a distinct therapeutic angle to pursue in human trials.
