Author/Editor		Kouter, Katarina; Zupanc, Tomaž; Videtič Paska, Alja
Title		Targeted sequencing approach
Type		članek
Publication year		2022
Volume		str. str.
ISSN		1562-2975 - The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry
Language		eng
Abstract		Objectives Epigenetic mechanisms are involved in regulation of many pathologies, including suicidal behaviour. However, the factors through which epigenetics affect suicidal behaviour are not fully understood. Methods We analysed DNA methylation of eight neuropsychiatric genes (NR3C1, SLC6A4, HTR1A, TPH2, SKA2, MAOA, GABRA1, and NRIP3) in brain regions (hippocampus, insula, amygdala, Brodmann area 46) and blood of 25 male suicide victims and 28 male control subjects, using bisulfite next-generation sequencing. Results Comparing mean methylation values, notable changes were observed in NR3C1 (insula p-value =0.05), HTR1A (insula p-value <0.001, blood p-value =0.001), SKA2 (insula p-value =0.03, blood p-value =0.016), MAOA (blood p-value <0.001), GABRA1 (insula p-value =0.05, blood p-value =0.024) and NRIP3 (hippocampus p-value =0.001, insula p-value =0.002, amygdala p-value =0.014). Comparing methylation pattern between blood and brain, similarity was observed between blood and insula for HTR1A. Gene expression analysis in hippocampus revealed changes in expression of NR3C1 (p-value =0.049), SLC6A4 (p-value =0.017) and HTR1A (p-value =0.053). Conclusions Results provide an insight into the altered state of DNA methylation in suicidal behaviour. Epigenetic differences could therefore affect suicidal behaviour in both previously known and in novel neuropsychiatric candidate genes.
Keywords		suicidal behaviour epigenetics next-generation sequencing samomorilno vedenje epigenetika sekvenciranje naslednje generacije