Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 23, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/ijms23010013
Keywords
Alzheimer's disease; Parkinson's disease; DNA methylation; gene expression; sirtuin; diagnostic biomarker
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This study aimed to identify epigenetic biomarkers for neurodegenerative diseases by analyzing DNA methylation, SIRT activity, and gene expression. The findings suggest that these biomarkers, which showed reduced levels in patients, could be useful for diagnosis, surveillance, and prognosis of neurodegenerative diseases.
Epigenetics is the study of heritable changes in gene expression that occur without alterations to the DNA sequence, linking the genome to its surroundings. The accumulation of epigenetic alterations over the lifespan may contribute to neurodegeneration. The aim of the present study was to identify epigenetic biomarkers for improving diagnostic efficacy in patients with neurodegenerative diseases. We analyzed global DNA methylation, chromatin remodeling/histone modifications, sirtuin (SIRT) expression and activity, and the expression of several important neurodegeneration-related genes. DNA methylation, SIRT expression and activity and neuregulin 1 (NRG1), microtubule-associated protein tau (MAPT) and brain-derived neurotrophic factor (BDNF) expression were reduced in buffy coat samples from patients with neurodegenerative disorders. Our data suggest that these epigenetic biomarkers may be useful in clinical practical for the diagnosis, surveillance, and prognosis of disease activity in patients with neurodegenerative diseases.
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