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Published on: August 24, 2013
RNA-binding proteins in Mendelian disease
Alfredo Castello1, Bernd Fischer, Matthias W Hentze
1European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, D-69117 Heidelberg, Germany.
Trends in Genetics : TIG
|February 19, 2013
Summary
Two studies identified over 1100 RNA-binding proteins (RBPs) in human cells, revealing many novel RBPs and linking them to genetic diseases, including neurological and cancer disorders.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- RNA-binding proteins (RBPs) are crucial regulators of RNA metabolism, impacting cellular functions.
- Dysfunctional RBPs are implicated in numerous human diseases, highlighting their importance in health and disease.
- Understanding the full spectrum of RBPs and their roles is essential for deciphering disease mechanisms.
Purpose of the Study:
- To identify the in vivo mRNA interactomes of human cells, thereby expanding the known repertoire of RNA-binding proteins.
- To investigate the association of newly identified RBPs and known disease-associated proteins with human genetic disorders.
- To explore the functional implications of mutations in both classical and non-classical RNA-binding proteins in the context of disease.
Main Methods:
- Utilized mRNA interactome capture techniques to identify proteins binding to mRNA in vivo.
- Analyzed datasets to quantify the number of proteins interacting with mRNA and identify those lacking prior RNA-binding annotation.
- Correlated identified proteins with known disease-causing genes and analyzed mutation patterns within protein structures.
Main Results:
- Over 1100 proteins were identified as binding to mRNA in human cells.
- A significant number of these, over 350, were novel RNA-binding proteins (RBPs) with no prior RNA-binding annotation or homology.
- Many disease-associated proteins, including those causing neurological, sensory, muscular disorders, and cancers, were found to be RBPs, with mutations often occurring in non-canonical regions.
Conclusions:
- Recent interactome studies have substantially expanded the landscape of human RNA-binding proteins (RBPs).
- These findings reveal novel RBPs and strengthen the link between RNA-binding protein dysfunction and a wide range of human genetic diseases.
- Future research using mRNA interactome capture will advance RNA systems biology and deepen our understanding of physiological and pathophysiological processes.
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