Posttranscriptional regulation of neurofilament proteins and tau in health and disease
Brain Research Bulletin(2023)
Abstract
Neurofilament and tau proteins are neuron-specific cytoskeletal proteins that are enriched in axons, regulated by many of the same protein kinases, interact physically, and are the principal constituents of neurofibrillary lesions in major adult-onset dementias. Both proteins share functions related to the modulation of stability and functions of the microtubule network in axons, axonal transport and scaffolding of organelles, long-term synaptic poten-tiation, and learning and memory. Expression of these proteins is regulated not only at the transcriptional level but also through posttranscriptional control of pre-mRNA splicing, mRNA stability, transport, localization, local translation and degradation. Current evidence suggests that posttranscriptional determinants of their levels are usually regulated by RNA-binding proteins and microRNAs primarily through 3'-untranslated regions of neu-rofilament and tau mRNAs. Dysregulations of neurofilament and tau expression caused by mutations or pa-thologies of RNA-binding proteins such as TDP43, FUS and microRNAs are increasingly recognized in association with varied neurological disorders. In this review, we summarize the current understanding of post -transcriptional control of neurofilament and tau by examining the posttranscriptional regulation of neurofila-ment and tau by RNA-binding proteins and microRNAs implicated in health and diseases.
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Key words
Neurofilament,Tau,mRNA,RNA -binding protein,miRNA,Posttranscriptional control
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