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Isolation of Intermediate Filament Proteins from Multiple Mouse Tissues to Study Aging-associated Post-translational Modifications

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Published on: May 18, 2017

A Spatially Resolved View on the Aging Substantia nigra: An Exploratory Proteomic Study.

Britta Eggers^1,2, Maximilian Hausherr^1,2, Michel Lim^1,2

¹Medizinisches Proteom-Center, Medical Faculty, Ruhr University Bochum, 44801, Bochum, Germany.

Advanced Biology

|September 18, 2025

Summary

Aging brains show early Parkinson

Keywords:

Parkinson's disease brain aging dementia with Lewy bodies neuromelanin granules proteomics

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Area of Science:

Neuroscience
Aging Research
Molecular Biology

Background:

Physiological aging causes brain structural and molecular changes, increasing neurodegenerative disease risk.
The substantia nigra pars compacta (SNpc) is vulnerable in Parkinson's disease and shows age-related alterations.

Purpose of the Study:

To investigate age-dependent molecular changes in the SNpc.
To identify early neurodegenerative processes during physiological aging.

Main Methods:

Laser microdissection of SNpc tissue and neuromelanin granules from young and elderly individuals.
Mass spectrometry to analyze age-related protein expression changes.

Main Results:

Reduced levels of proteins involved in dopaminergic neurotransmission observed.
Increased neuroinflammation, altered vesicular trafficking, and mitochondrial proteins found in elderly individuals.

Conclusions:

Age-related alterations in the SNpc mirror early Parkinson's disease pathomechanisms.
These findings highlight the critical role of aging as a risk factor for neurodegeneration.