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2018 ; 8
(1
): 7942
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Regulation of chromatin states and gene expression during HSN neuronal maturation
is mediated by EOR-1/PLZF, MAU-2/cohesin loader, and SWI/SNF complex
#MMPMID29786685
Shinkai Y
; Kuramochi M
; Doi M
Sci Rep
2018[May]; 8
(1
): 7942
PMID29786685
show ga
Newborn neurons mature by distinct and sequential steps through the timely
induction of specific gene expression programs in concert with epigenetic
changes. However, it has been difficult to investigate the relationship between
gene expression and epigenetic changes at a single-cell resolution during
neuronal maturation. In this study, we investigated the maturation of
hermaphrodite-specific neurons (HSNs) in C. elegans, which provided the link
between chromatin dynamics, gene expression, and the degree of neuronal
maturation at a single-cell resolution. Our results demonstrated that chromatin
composition in the promoter region of several genes acting for neuronal terminal
maturation was modulated at an early developmental stage, and is dependent on the
function of the transcription factor EOR-1/PLZF and the cohesin loader
MAU-2/MAU2. Components of the SWI/SNF chromatin remodeling complex were also
required for the proper expression of terminal maturation genes. Epistasis
analyses suggested that eor-1 functions with mau-2 and swsn-1 in the same genetic
pathway to regulate the maturation of HSNs. Collectively, our study provides a
novel approach to analyze neuronal maturation and proposes that predefined
epigenetic modifications, mediated by EOR-1, MAU-2, and the SWI/SNF complex, are
important for the preparation of future gene expression programs in neuronal
terminal maturation.