Methylation of the SLC6a2 Gene Promoter in Major Depression and Panic Disorder

被引:33
作者
Bayles, Richard [1 ]
Baker, Emma K. [2 ]
Jowett, Jeremy B. M. [1 ]
Barton, David [1 ]
Esler, Murray [1 ]
El-Osta, Assam [1 ]
Lambert, Gavin [1 ]
机构
[1] Baker IDI Heart & Diabet Inst, Melbourne, Vic, Australia
[2] St Vincents Inst, Melbourne, Vic, Australia
基金
澳大利亚国家健康与医学研究理事会;
关键词
NOREPINEPHRINE TRANSPORTER GENE; DNA METHYLATION; CHROMATIN; REUPTAKE; HYPERTENSION; EPIGENETICS; EXPRESSION; SPILLOVER; BINDING; SYSTEM;
D O I
10.1371/journal.pone.0083223
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Reduced function of the noradrenaline transporter (NET) has been demonstrated in patients with major depressive disorder (MDD) and panic disorder. Attempts to explain NET dysfunction in MDD and panic disorder by genetic variation in the NET gene SLC6a2 have been inconclusive. Transcriptional silencing of the SLC6a2 gene may be an alternative mechanism which can lead to NET dysfunction independent of DNA sequence. The objective of this study was to characterise the DNA methylation state of the SLC6a2 gene promoter in patients with MDD and panic disorder. SLC6a2 promoter methylation was also analysed before and after antidepressant treatment. This study was performed with DNA from blood, using bisulphite sequencing and EpiTYPER methylation analyses. Patients with MDD or panic disorder were not found to differ significantly from healthy controls in the pattern of methylation of the SLC6a2 gene promotor. While significant correlations between methylation levels at some CpG sites and physiological measures were identified, overall the variation in DNA methylation between patients was small, and the significance of this variation remains equivocal. No significant changes in SLC6a2 promoter methylation were observed in response to antidepressant treatment. Further in-depth analysis of alternative mechanisms of transcriptional regulation of the SLC6a2 gene in human health and disease would be of value.
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页数:12
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