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New Discovery Links Reactive Oxygen Species to Alzheimer's Therapy

11/9/2025

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Summary

Story summary

Weill Cornell Medicine researchers show reactive oxygen species (ROS) act as selective signaling molecules in neurodegenerative diseases, including Alzheimer’s.
The researchers developed small molecules called S3QELs to selectively block ROS production at mitochondrial Complex III.
The research shows astrocytes, not neurons, are the primary source of damaging ROS signals.
The findings imply ROS modify immune and metabolic proteins and amplify inflammatory gene activity to guide targeted therapies.

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Story summary

Weill Cornell Medicine researchers show reactive oxygen species (ROS) act as selective signaling molecules in neurodegenerative diseases, including Alzheimer’s.
The researchers developed small molecules called S3QELs to selectively block ROS production at mitochondrial Complex III.
The research shows astrocytes, not neurons, are the primary source of damaging ROS signals.
The findings imply ROS modify immune and metabolic proteins and amplify inflammatory gene activity to guide targeted therapies.