1. Cell environment shapes TDP-43 function with implications in neuronal and muscle disease
- Author
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Šušnjar, Urša, Škrabar, Neva, Brown, Anna-Leigh, Abbassi, Yasmine, Phatnani, Hemali, NYGC ALS Consortium, Cortese, Andrea, Cereda, Cristina, Bugiardini, Enrico, Cardani, Rosanna, Meola, Giovanni, Ripolone, Michela, Moggio, Maurizio, Romano, Maurizio, Secrier, Maria, Fratta, Pietro, Buratti, Emanuele, Human Genetics, ARD - Amsterdam Reproduction and Development, Pathology, ANS - Cellular & Molecular Mechanisms, Šušnjar, Urša, Škrabar, Neva, Brown, Anna-Leigh, Abbassi, Yasmine, Phatnani, Hemali, Cortese, Andrea, Cereda, Cristina, Bugiardini, Enrico, Cardani, Rosanna, Meola, Giovanni, Ripolone, Michela, Moggio, Maurizio, Romano, Maurizio, Secrier, Maria, Fratta, Pietro, and Buratti, Emanuele
- Subjects
DNA-Binding Protein ,1.1 Normal biological development and functioning ,RNA Splicing ,Medicine (miscellaneous) ,Neurodegenerative ,General Biochemistry, Genetics and Molecular Biology ,Mice ,Rare Diseases ,Underpinning research ,mental disorders ,Acquired Cognitive Impairment ,Genetics ,2.1 Biological and endogenous factors ,Animals ,Humans ,Aetiology ,NYGC ALS Consortium ,Animal ,Muscles ,Amyotrophic Lateral Sclerosis ,Neurosciences ,nutritional and metabolic diseases ,nervous system diseases ,Brain Disorders ,DNA-Binding Proteins ,Frontotemporal Dementia (FTD) ,Frontotemporal Dementia ,Neurological ,Muscle ,Dementia ,General Agricultural and Biological Sciences ,Human ,Amyotrophic Lateral Sclerosi - Abstract
The aetiology of the TDP-43 aggregation manifest itself in the muscle and neuronal cells. Here authors show cell-type characteristic functions of TDP43, reflected in aberrant splicing, likely contributing to disease development.TDP-43 (TAR DNA-binding protein 43) aggregation and redistribution are recognised as a hallmark of amyotrophic lateral sclerosis and frontotemporal dementia. As TDP-43 inclusions have recently been described in the muscle of inclusion body myositis patients, this highlights the need to understand the role of TDP-43 beyond the central nervous system. Using RNA-seq, we directly compare TDP-43-mediated RNA processing in muscle (C2C12) and neuronal (NSC34) mouse cells. TDP-43 displays a cell-type-characteristic behaviour targeting unique transcripts in each cell-type, which is due to characteristic expression of RNA-binding proteins, that influence TDP-43's performance and define cell-type specific splicing. Among splicing events commonly dysregulated in both cell lines, we identify some that are TDP-43-dependent also in human cells. Inclusion levels of these alternative exons are altered in tissues of patients suffering from FTLD and IBM. We therefore propose that TDP-43 dysfunction contributes to disease development either in a common or a tissue-specific manner.
- Published
- 2021