Mutations in the TARDBP gene, which encodes the Tar DNA binding protein, have been shown to causes of both familial amyotrophic lateral sclerosis (FALS) and sporadic ALS (SALS). Recently, several novel TARDBP exon 6 mutants have been reported in patients with ALS in Europe and America but not in Asia. To further examine the spectrum and frequency of TARDBP exon 6 mutations, we investigated their frequency in ethnic Chinese patients with sporadic ALS. TARDBP exon 6 was screened by direct sequencing in 207 non-SOD1 SALS patients and 230 unrelated healthy controls but no mutations were identified. Our data indicate that exon 6 mutations in TARDBP are not a common cause of SALS in Han Chinese population from Southern Mainland China.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3706600 | PMC |
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0068106 | PLOS |
Acta Neuropathol
September 2024
Metabolic Pathophysiology Research Group, Department of Experimental Medicine, University of Lleida (UdL), Lleida Biomedical Research Institute (IRBLleida), 25198, Lleida, Spain.
Aging Cell
December 2024
State Key Laboratory of Bioactive Molecules and Druggability Assessment, Guangdong Key Laboratory of non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, Guangdong, China.
Huntington's disease (HD) is caused by a CAG repeat expansion in exon1 of the HTT gene that encodes a polyglutamine tract in huntingtin protein. The formation of HTT exon1 fragments with an expanded polyglutamine repeat has been implicated as a key step in the pathogenesis of HD. It was reported that the CAG repeat length-dependent aberrant splicing of exon1 HTT results in a short polyadenylated mRNA that is translated into an exon1 HTT protein.
View Article and Find Full Text PDFJ Biol Chem
September 2024
Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA. Electronic address:
Protein aggregation is a common feature of many neurodegenerative diseases. In Huntington's disease, mutant huntingtin is the primary aggregating protein, but the aggregation of other proteins, such as TDP43, is likely to further contribute to toxicity. Moreover, mutant huntingtin is also a risk factor for TDP pathology in ALS.
View Article and Find Full Text PDFJMA J
July 2024
Department of Molecular Neuroscience, Brain Research Institute, Niigata University, Niigata, Japan.
Amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) are neurodegenerative diseases with a progressive and fatal course. They are often comorbid and share the same molecular spectrum. Their key pathological features are the formation of the aggregation of TDP-43, an RNA-binding protein, in the cytoplasm and its depletion from the nucleus in the central nervous system.
View Article and Find Full Text PDFTrends Mol Med
December 2024
Centre de Référence sur la SLA de Tours, Centre Hospitalier Universitaire de Tours, Tours, France; UMR 1253, iBRAIN, Université de Tours, INSERM, Tours, France.
The identification of biomarkers for amyotrophic lateral sclerosis (ALS) is a central issue in disease research. In a recent article, Chatterjee et al. show that blood extracellular vesicles (EVs) with high levels of transactive response DNA-binding protein 43 (TDP-43) accurately discriminate patients with ALS from controls and correlate with disease severity, providing a promising biomarker for early diagnosis and monitoring.
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