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2017 ; 10
(1
): 480
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Changes in DNA methylation in naïve T helper cells regulate the
pathophysiological state in minimal-change nephrotic syndrome
#MMPMID28915836
Kobayashi Y
; Aizawa A
; Takizawa T
; Igarashi K
; Hatada I
; Arakawa H
BMC Res Notes
2017[Sep]; 10
(1
): 480
PMID28915836
show ga
BACKGROUND: DNA methylation plays a crucial role in regulating transcription, and
changes in DNA methylation affect gene expression and disease development.
Minimal change nephrotic syndrome (MCNS) has been reported to involve
immunological disturbances. Since the characteristic features of the disease
include recurrent relapse and sex and age preference, the disease pathogenesis
may be partly related to epigenetic changes. However, little is known about these
changes. METHODS: We analyzed genome-wide DNA methylation using the
microarray-based integrated analysis of methylation by isoschizomers method. This
method was used to evaluate methylation in monocytes (patient number; n = 6) and
naïve T helper cells (n = 4) from the peripheral blood of MCNS patients both in
relapse and following remission and that of healthy controls (n = 5). RESULTS: In
total, 85 co-occurring genes were identified in naïve T helper cells, while 4
such genes were identified in monocytes, which were common among the 3 following
comparisons for changes in DNA methylation using sample pairs: (1) relapse versus
remission, (2) relapse versus controls, and (3) remission versus controls. In 82
of 85 co-occurring genes (96.5%) in naïve T helper cells, the level of DNA
methylation was altered according to disease activity, but was not related to
disease activity in the 4 genes detected in monocytes. CONCLUSIONS: Therefore, in
82 co-occurring genes in naïve T helper cells, the regulation of DNA methylation
was well correlated with the clinical and pathophysiological state. Our
genome-wide approach to analyze DNA methylation provides further insight into the
pathogenesis of MCNS and indicates potential prediction and diagnostic tool for
the disease.