期刊
NEUROCHEMICAL RESEARCH
卷 39, 期 6, 页码 1016-1031出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11064-013-1229-3
关键词
Fragile X syndrome; FMR1; FMRP; Gq-coupled receptors; LTD; LTP; Mouse model; RNA-binding protein; Translation; Therapeutic development
资金
- National Institute of Health [MH093445]
- FRAXA Research Foundation
Fragile X syndrome (FXS) is caused by mutations in the fragile X mental retardation 1 (FMR1) gene. Most FXS cases occur due to the expansion of the CGG trinucleotide repeats in the 5' un-translated region of FMR1, which leads to hypermethylation and in turn silences the expression of FMRP (fragile X mental retardation protein). Numerous studies have demonstrated that FMRP interacts with both coding and non-coding RNAs and represses protein synthesis at dendritic and synaptic locations. In the absence of FMRP, the basal protein translation is enhanced and not responsive to neuronal stimulation. The altered protein translation may contribute to functional abnormalities in certain aspects of synaptic plasticity and intracellular signaling triggered by Gq-coupled receptors. This review focuses on the current understanding of FMRP function and potential therapeutic strategies that are mainly based on the manipulation of FMRP targets and knowledge gained from FXS pathophysiology.
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