Loss of Y is associated with multi-omic changes in immune cells from Alzheimer's disease patients
Jakalski, M.; Rychlicka-Buniowska, E.; Davies, H.; Sarkisyan, D.; Siedlar, M.; Baran, J.; Weglarczyk, K.; Jaszczynski, J.; Rys, J.; Giedraitis, V.; Klich-Raczka, A.; Kilander, L.; Ingelsson, M.; Dumanski, J. P.; Mieczkowski, J.
Show abstract
Alzheimers disease (AD) is a common and increasing societal problem due to the extending human lifespan. In males, loss of Y (LOY) in leukocytes is more prevalent in AD patients. We studied DNA methylation, gene expression and other epigenetic changes in monocytes and granulocytes with and without LOY from male AD patients and controls. New candidate genes were identified and numerous genes already implicated in AD pathogenesis were confirmed. We show that multi-omics of leukocytes can define AD candidate genes and we strengthen the role of LOY in disease development. The LOY-associated differences in DNA methylation levels were predominantly observed in regulatory regions, and supported by expression analysis showing down-regulation of immune genes. The single-cell transcriptomics highlighted that the AD patient-specific immune activation dominates over LOY-specific activation. Our findings agree with the hypothesis that age-related dysfunction of immune cells contribute to AD and that LOY is reflected by higher-level epigenetic changes with an AD-specific pattern.
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