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pmid: 30808650
pmc: PMC6391683
handle: 10668/13629 , 20.500.12105/25248 , 11441/87960 , 10261/204507
pmid: 30808650
pmc: PMC6391683
handle: 10668/13629 , 20.500.12105/25248 , 11441/87960 , 10261/204507
FUS (fused in sarcoma) plays a key role in several steps of RNA metabolism, and dominant mutations in this protein are associated with neurodegenerative diseases. Here, we show that FUS is a component of the cellular response to topoisomerase I (TOP1)–induced DNA breakage; relocalising to the nucleolus in response to RNA polymerase II (Pol II) stalling at sites of TOP1-induced DNA breaks. This relocalisation is rapid and dynamic, reversing following the removal of TOP1-induced breaks and coinciding with the recovery of global transcription. Importantly, FUS relocalisation following TOP1-induced DNA breakage is associated with increased FUS binding at sites of RNA polymerase I transcription in ribosomal DNA and reduced FUS binding at sites of RNA Pol II transcription, suggesting that FUS relocates from sites of stalled RNA Pol II either to regulate pre-mRNA processing during transcriptional stress or to modulate ribosomal RNA biogenesis. Importantly, FUS-mutant patient fibroblasts are hypersensitive to TOP1-induced DNA breakage, highlighting the possible relevance of these findings to neurodegeneration.
Life Sciences & Biomedicine - Other Topics, Transcription, Genetic, DNA Repair, TDP-43, metabolism [DNA Topoisomerases, Type I], ADN, metabolism [Neural Stem Cells], Q1, AMYOTROPHIC-LATERAL-SCLEROSIS, Mice, Neural Stem Cells, RNA Polymerase I, DNA Breaks, Double-Stranded, TOP1 protein, human, Research Articles, metabolism [RNA-Binding Protein FUS], Metabolismo, Neurons, ROLES, BINDING PROTEINS, Q, FUS protein, mouse, Brain, metabolism [RNA Polymerase I], Chromatin, ARN, genetics [Amyotrophic Lateral Sclerosis], DNA Topoisomerases, Type I, metabolism [Neurons], Proteínas, metabolism [RNA Polymerase II], COMPLEXES, Pacientes, RNA Polymerase II, Life Sciences & Biomedicine, FUS/TLS, metabolism [Fibroblasts], metabolism [Chromatin], INSTABILITY, RNA-POLYMERASE-II, genetics [Mutation], Q0179.9, embryology [Brain], Animals, Humans, pathology [Amyotrophic Lateral Sclerosis], Biology, SPINOCEREBELLAR ATAXIA, Science & Technology, Binding Sites, Mutación, MUTATIONS, 31 Biological sciences, cytology [Brain], Amyotrophic Lateral Sclerosis, 32 Biomedical and clinical sciences, FUS protein, human, Fibroblasts, A549 Cells, Hela Cells, Mutation, RNA-Binding Protein FUS, Mutant Proteins, genetics [RNA-Binding Protein FUS], HeLa Cells, ddc: ddc:570
Life Sciences & Biomedicine - Other Topics, Transcription, Genetic, DNA Repair, TDP-43, metabolism [DNA Topoisomerases, Type I], ADN, metabolism [Neural Stem Cells], Q1, AMYOTROPHIC-LATERAL-SCLEROSIS, Mice, Neural Stem Cells, RNA Polymerase I, DNA Breaks, Double-Stranded, TOP1 protein, human, Research Articles, metabolism [RNA-Binding Protein FUS], Metabolismo, Neurons, ROLES, BINDING PROTEINS, Q, FUS protein, mouse, Brain, metabolism [RNA Polymerase I], Chromatin, ARN, genetics [Amyotrophic Lateral Sclerosis], DNA Topoisomerases, Type I, metabolism [Neurons], Proteínas, metabolism [RNA Polymerase II], COMPLEXES, Pacientes, RNA Polymerase II, Life Sciences & Biomedicine, FUS/TLS, metabolism [Fibroblasts], metabolism [Chromatin], INSTABILITY, RNA-POLYMERASE-II, genetics [Mutation], Q0179.9, embryology [Brain], Animals, Humans, pathology [Amyotrophic Lateral Sclerosis], Biology, SPINOCEREBELLAR ATAXIA, Science & Technology, Binding Sites, Mutación, MUTATIONS, 31 Biological sciences, cytology [Brain], Amyotrophic Lateral Sclerosis, 32 Biomedical and clinical sciences, FUS protein, human, Fibroblasts, A549 Cells, Hela Cells, Mutation, RNA-Binding Protein FUS, Mutant Proteins, genetics [RNA-Binding Protein FUS], HeLa Cells, ddc: ddc:570
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