کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2199285 1099436 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The fragile X mental retardation protein–RNP granules show an mGluR-dependent localization in the post-synaptic spines
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیولوژی سلول
پیش نمایش صفحه اول مقاله
The fragile X mental retardation protein–RNP granules show an mGluR-dependent localization in the post-synaptic spines
چکیده انگلیسی

The localization of RNA/mRNA in dendrites plays a role in both local and temporal regulation of protein synthesis, which is required for certain forms of synaptic plasticity. A key molecule in these processes is the fragile X mental retardation protein (FMRP). Using in situ hybridization coupled to immunofluorescence confocal microscopy, we find that the FMRP–RNP particle contains αCaMKII and BC1 RNAs as well as Staufen and CPEB proteins. Furthermore, following mGluR activation, the FMRP–mRNP complex moves into spines as shown by co-localization with the PSD-95 and Shank proteins. This study shows, for the first time, that the translationally inactive FMRP–mRNP complex relocates into neuronal spines after stimulation and that de novo protein synthesis mainly contributes to the pool of FMRP at synapses.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular and Cellular Neuroscience - Volume 34, Issue 3, March 2007, Pages 343–354
نویسندگان
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