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RE1 silencing transcription factor (REST) negatively regulates ALL1-fused from chromosome 1q (AF1q) gene transcription.

ABSTRACT: ALL1-fused from chromosome 1q (AF1q), originally considered as an oncogenic factor, has been implicated in neuronal development; however, its upstream regulatory mechanisms in neural system remained elusive.Our study showed that REST (RE1 silencing transcription factor), a key transcription factor in neurodevelopment, could down-regulate the gene expression of AF1q. The promoter assay identified a neuron-restrictive silencer element at -383 to -363 bp of human AF1q promoter. Electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (CHIP) confirmed the binding of REST to the NRSE in AF1q gene promoter. Additionally, the negative correlation between the expression levels of Af1q and Rest in mice neurodevelopment supported the negative regulation of AF1q by REST and the potential functions of AF1q in neurodevelopment.These results demonstrate that REST regulates AF1q gene transcription through directly binding to a NRSE at -383 to -363 bp of AF1q promoter.

SUBMITTER: Hu Y 

PROVIDER: S-EPMC4560861 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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RE1 silencing transcription factor (REST) negatively regulates ALL1-fused from chromosome 1q (AF1q) gene transcription.

Hu Yuanyuan Y   Sun Qianwen Q   Zhang Chen C   Sha Qingquan Q   Sun Xiulian X  

BMC molecular biology 20150905

<h4>Background</h4>ALL1-fused from chromosome 1q (AF1q), originally considered as an oncogenic factor, has been implicated in neuronal development; however, its upstream regulatory mechanisms in neural system remained elusive.<h4>Results</h4>Our study showed that REST (RE1 silencing transcription factor), a key transcription factor in neurodevelopment, could down-regulate the gene expression of AF1q. The promoter assay identified a neuron-restrictive silencer element at -383 to -363 bp of human  ...[more]

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