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Published on: January 7, 2019
RNA binding protein-mediated post-transcriptional gene regulation in medulloblastoma
Rebecca Bish1, Christine Vogel
1New York University, Center for Genomics and Systems Biology, New York, NY, USA.
Abstract:
Medulloblastoma, the most common malignant brain tumor in children, is a disease whose mechanisms are now beginning to be uncovered by high-throughput studies of somatic mutations, mRNA expression patterns, and epigenetic profiles of patient tumors. One emerging theme from studies that sequenced the tumor genomes of large cohorts of medulloblastoma patients is frequent mutation of RNA binding proteins. Proteins which bind multiple RNA targets can act as master regulators of gene expression at the post-transcriptional level to co-ordinate cellular processes and alter the phenotype of the cell. Identification of the target genes of RNA binding proteins may highlight essential pathways of medulloblastomagenesis that cannot be detected by study of transcriptomics alone. Furthermore, a subset of RNA binding proteins are attractive drug targets. For example, compounds that are under development as anti-viral targets due to their ability to inhibit RNA helicases could also be tested in novel approaches to medulloblastoma therapy by targeting key RNA binding proteins. In this review, we discuss a number of RNA binding proteins, including Musashi1 (MSI1), DEAD (Asp-Glu-Ala-Asp) box helicase 3 X-linked (DDX3X), DDX31, and cell division cycle and apoptosis regulator 1 (CCAR1), which play potentially critical roles in the growth and/or maintenance of medulloblastoma.
Insights
RNA binding proteins are frequently mutated in pediatric medulloblastoma. Targeting these proteins may offer new therapeutic strategies for this common childhood brain tumor.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Medulloblastoma is the most common malignant pediatric brain tumor.
- High-throughput studies reveal frequent mutations in RNA binding proteins (RBPs) within medulloblastoma tumors.
- RBPs regulate gene expression post-transcriptionally, influencing cellular processes and tumor phenotype.
Purpose of the Study:
- To review the roles of specific RNA binding proteins in medulloblastoma.
- To highlight RBPs as potential therapeutic targets for medulloblastoma.
- To explore how RBP targets can elucidate medulloblastomagenesis pathways.
Main Methods:
- Review of genomic, transcriptomic, and epigenomic data from medulloblastoma patient cohorts.
- Analysis of the functional roles of frequently mutated RBPs.
- Discussion of potential therapeutic strategies targeting RBPs.
Main Results:
- Frequent mutations in RBPs are a common theme in medulloblastoma.
- RBPs like Musashi1 (MSI1), DDX3X, DDX31, and CCAR1 are implicated in medulloblastoma growth and maintenance.
- Targeting RBPs presents a novel therapeutic avenue.
Conclusions:
- RNA binding proteins play critical roles in medulloblastoma.
- Understanding RBP function and targets is key to deciphering medulloblastomagenesis.
- Inhibiting specific RBPs, potentially with existing antiviral compounds, could be a promising therapeutic approach for medulloblastoma.
- Meta_Description:
- RNA binding proteins are frequently mutated in pediatric medulloblastoma, offering potential new therapeutic targets for this common childhood brain tumor.
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