Scientists Discover Hidden Brain Structure That Could Help Fight Alzheimer’s
Summary
Scientists at Pennsylvania State University discovered a tiny structure inside brain cells called the membrane-associated periodic skeleton (MPS). This structure controls what brain cells absorb and may play a key role in Alzheimer's disease by influencing the buildup of harmful proteins.Key Facts
- The MPS is a lattice-like structure made of protein rings found just beneath the surface of neurons.
- It regulates endocytosis, the process by which brain cells take in nutrients and molecules from their surroundings.
- Using advanced microscopy, researchers showed that damaging the MPS causes neurons to absorb material too quickly.
- Faster absorption weakens the MPS further, creating a cycle of damage and increased uptake.
- In neurons engineered to produce more amyloid precursor protein (APP), MPS damage sped up the intake of APP, which is linked to Alzheimer's disease.
- Breakdown of the MPS leads to more toxic amyloid-beta 42 buildup, causing neuron death.
- The MPS deteriorates with age and disease, which may worsen neurodegeneration.
- Researchers believe stabilizing the MPS could help slow diseases like Alzheimer's.
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