Breakthrough in Alzheimer's Research: Discovery of Inflammation Switch
Scientists found the hidden switch fueling alzheimer’s brain inflammation
Image: Science Daily
Researchers at Scripps Research have identified a molecular switch, STING, that drives inflammation in Alzheimer's disease. By blocking a specific chemical modification of STING, they were able to reduce neuroinflammation and protect brain connections in mouse models, highlighting a potential new therapeutic target for Alzheimer's treatment.
- 01The protein STING is chemically modified in Alzheimer's disease, leading to chronic inflammation that harms nerve cell connections.
- 02Blocking the S-nitrosylation of STING in mouse models significantly reduced neuroinflammation and preserved synaptic connections.
- 03The research indicates a self-sustaining cycle of inflammation driven by protein aggregates associated with Alzheimer's.
- 04The study's findings suggest that targeting cysteine 148 on STING could be a promising therapeutic strategy without compromising normal immune function.
- 05The research was published in Cell Chemical Biology and supported by multiple grants from the National Institutes of Health and the U.S. Department of Defense.
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Scientists at Scripps Research have made a significant discovery regarding Alzheimer's disease by identifying a molecular switch, known as STING, that contributes to harmful brain inflammation. This protein undergoes a chemical modification called S-nitrosylation, which keeps the brain's immune system in a state of overactivity, damaging nerve cell connections. In experiments with mouse models, researchers found that blocking this modification led to decreased neuroinflammation and protected synaptic connections, which are crucial for cognitive function. The study reveals that protein aggregates linked to Alzheimer's can trigger the harmful modification of STING, creating a cycle of inflammation. By targeting cysteine 148 on STING, the researchers aim to develop small molecules that can interrupt this cycle, offering a new potential treatment avenue for Alzheimer's without hindering the immune response. The findings were published in the journal Cell Chemical Biology and highlight a promising direction for future Alzheimer's therapies.
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The discovery of the STING switch may lead to new treatments for Alzheimer's disease, potentially improving the quality of life for millions affected by this condition.
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