1. MATR3 pathogenic variants differentially impair its cryptic splicing repression function.
- Author
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Khan M, Chen XXL, Dias M, Santos JR, Kour S, You J, van Bruggen R, Youssef MMM, Wan YW, Liu Z, Rosenfeld JA, Tan Q, Pandey UB, Yalamanchili HK, and Park J
- Subjects
- Humans, Exons genetics, RNA-Binding Proteins genetics, RNA-Binding Proteins metabolism, RNA, Nuclear Matrix-Associated Proteins genetics, Amyotrophic Lateral Sclerosis genetics
- Abstract
Matrin-3 (MATR3) is an RNA-binding protein implicated in neurodegenerative and neurodevelopmental diseases. However, little is known regarding the role of MATR3 in cryptic splicing within the context of functional genes and how disease-associated variants impact this function. We show that loss of MATR3 leads to cryptic exon inclusion in many transcripts. We reveal that ALS-linked S85C pathogenic variant reduces MATR3 solubility but does not impair RNA binding. In parallel, we report a novel neurodevelopmental disease-associated M548T variant, located in the RRM2 domain, which reduces protein solubility and impairs RNA binding and cryptic splicing repression functions of MATR3. Altogether, our research identifies cryptic events within functional genes and demonstrates how disease-associated variants impact MATR3 cryptic splicing repression function., (© 2024 The Authors. FEBS Letters published by John Wiley & Sons Ltd on behalf of Federation of European Biochemical Societies.)
- Published
- 2024
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