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- W2032719480 abstract "TDP-43, recently identified as a signature protein of the pathogenic inclusions in the brains cells of frontotemporal lobar degeneration patients, is a 43 kDa RNA-binding protein. It has been known mainly as a nuclear factor capable of repressing transcription and promoting exon exclusion. TDP-43 also forms distinct nuclear substructures linking different types of nuclear bodies. In this study, we provide the first evidence supporting TDP-43 as a neuronal activity-responsive factor in the dendrites of hippocampal neurons. In particular, TDP-43 resides in the somatodendrites mainly in the form of RNA granules colocalized with the post-synaptic protein PSD-95. These granules also contain RNAs including at least the β-actin mRNA and CaMKIIα mRNA. Furthermore, TDP-43 is localized in the dendritic processing (P) body and it behaves as a translational repressor in an in vitro assay. Related to this, repetitive stimuli by KCl greatly enhance the colocalization of TDP-43 granules with FMRP and Staufen 1, two RNA-binding proteins known to regulate mRNA transport and local translation in neurons. These data together suggest that TDP-43 is a neuronal activity-responsive factor functioning in the regulation of neuronal plasticity, the impairment of which would lead to the development of certain forms of neurodegenerative diseases including frontotemporal lobar degeneration." @default.
- W2032719480 created "2016-06-24" @default.
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- W2032719480 date "2008-05-01" @default.
- W2032719480 modified "2023-10-18" @default.
- W2032719480 title "TDP-43, the signature protein of FTLD-U, is a neuronal activity-responsive factor" @default.
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- W2032719480 doi "https://doi.org/10.1111/j.1471-4159.2007.05190.x" @default.
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