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In our ageing population, neurodegenerative disorders carry an enormous personal, societal and economic burden. Although neurodegenerative diseases are often thought of as clinicopathological entities, increasing evidence suggests a considerable overlap in the molecular underpinnings of their pathogenesis. Such overlapping biological processes include the handling of misfolded proteins, defective organelle trafficking, RNA processing, synaptic health and neuroinflammation. Collectively but in different proportions, these biological processes in neurons or non-neuronal cells lead to regionally distinct patterns of neuronal vulnerability and progression of pathology that could explain the disease symptomology. With the advent of patient-derived cellular models and novel genetic manipulation tools, we are now able to interrogate this commonality despite the cellular complexity of the brain in order to develop novel therapeutic strategies to prevent or arrest neurodegeneration. Here, we describe broadly these concepts and their relevance across neurodegenerative diseases.

Original publication

DOI

10.1136/jnnp-2017-316988

Type

Journal article

Journal

J Neurol Neurosurg Psychiatry

Publication Date

19/02/2018

Keywords

RNA metabolism, alzheimer’s disease, frontotemporal dementia, gene editing, huntington’s disease, iPSCs, microglia, neurodegeneration, neuroinflammation, organelle trafficking, parkinson’s disease, proteostasis, trinucleotide repeat disorders