Histone methylation is a chromatin regulatory mechanism in which methyl groups are added to lysine or arginine residues on histone tails, altering transcriptional accessibility and regulatory state.[1][2] Depending on residue and context, histone methylation can be associated with either active transcription or gene repression.
Histone methylation is frequently referenced from disease and mechanism pages because altered H3K4me3, H3K27me3, and related marks are implicated in neuronal identity programs, inflammatory responses, and stress adaptation across neurologic disease.[1:1][2:1] It is best understood here as a specific sub-mechanism within broader epigenetic regulation.
Epigenetics in Neurodegenerative Diseases. Subcellular Biochemistry (2025). ↩︎ ↩︎
Epigenetics-Based Therapeutics for Neurodegenerative Disorders. Current Translational Geriatrics and Experimental Gerontology Reports (2012). ↩︎ ↩︎