Cited by 98RNA and protein synthesis mechanismsRNA Research and SplicingGenetics and Neurodevelopmental Disorders

Temporally defined neocortical translation and polysome assembly are determined by the RNA-binding protein Hu antigen R

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Kraushar, Matthew L., Thompson, Kevin, Wijeratne, H. R. Sagara, Viljetic, Barbara, Sakers, Kristina, Marson, Justin W., Kontoyiannis, Dimitris L., Buyske, Steven +2 more·2014·Proceedings of the National Academy of Sciences

Abstract

Precise spatiotemporal control of mRNA translation machinery is essential to the development of highly complex systems like the neocortex. However, spatiotemporal regulation of translation machinery in the developing neocortex remains poorly understood. Here, we show that an RNA-binding protein, Hu antigen R (HuR), regulates both neocorticogenesis and specificity of neocortical translation machinery in a developmental stage-dependent manner in mice. Neocortical absence of HuR alters the phosphorylation states of initiation and elongation factors in the core translation machinery. In addition, HuR regulates the temporally specific positioning of functionally related mRNAs into the active translation sites, the polysomes. HuR also determines the specificity of neocortical polysomes by defining their combinatorial composition of ribosomal proteins and initiation and elongation factors. For some HuR-dependent proteins, the association with polysomes likewise depends on the eukaryotic initiation factor 2 alpha kinase 4, which associates with HuR in prenatal developing neocortices. Finally, we found that deletion of HuR before embryonic day 10 disrupts both neocortical lamination and formation of the main neocortical commissure, the corpus callosum. Our study identifies a crucial role for HuR in neocortical development as a translational gatekeeper for functionally related mRNA subgroups and polysomal protein specificity.

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Crossref · 10.1073/pnas.1408305111

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  • Shared DATs included several RNAs with known enrichment in the cerebellum and transcripts with AU-rich elements, which could contribute to reduced neuronal health/survival in individuals with PCH1B.

    “However, shared DATs included several RNAs that have known enrichment in the cerebellum as well as enrichment in transcripts with AU-rich elements, that could contribute to reduced neuronal health/survival in individuals with PCH1B in agreement with prior work93,94.”

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Authors
Kraushar, M. L., Thompson, K., Wijeratne, H. R. S., Viljetic, B., Sakers, K., Marson, J. W., Kontoyiannis, D. L., Buyske, S., Hart, R. P., & Rasin, M.-R.
Affiliations
  • Rutgers, The State University of New Jersey (US)
  • Department of Neuroscience and Cell Biology, Rutgers University, Robert Wood Johnson Medical School, Piscataway, NJ 08854;
  • Alexander Fleming Biomedical Sciences Research Center (GR)
  • Departments of cStatistics and Biostatistics and
Venue
Proceedings of the National Academy of Sciences
Published
2014-08-25
Volume
111
Issue
36
Pages
E3815-24
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2070766573
Cited by
98
References
46
Citations by year
2026: 5 · 2025: 8 · 2024: 4 · 2023: 9 · 2022: 8 · 2021: 11 · 2020: 12 · 2019: 10 · 2018: 6 · 2017: 8 · 2016: 11 · 2015: 6
FWCI
3.41
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Rutgers University Community Repository (Rutgers University) (submittedVersion)
  • SUNY Digital Repository Support (State University of New York System) (submittedVersion, cc-by-nc-nd)
Funders
  • National Institute of Mental Health (F30MH106220)
  • National Institute on Drug Abuse (R21DA035594, DA032984, DA035594, R21DA032984)
  • National Institute of General Medical Sciences (T32GM008151)
  • National Institute of Neurological Disorders and Stroke (NS075367, R00NS064303, NS064303, K99NS064303, R01NS075367)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
neocortex development, mRNA translation, polysome assembly, ribosome biogenesis, ribosomal proteins, translation initiation factors, translation elongation factor, RNA-binding proteins
MeSH terms
ELAV-Like Protein 1, Animals, Corpus Callosum, Mitosis, Models, Biological, Neuroglia, Neurons, Phosphorylation, Polyribosomes, Ribosomal Proteins, RNA, Messenger, Time Factors, Transcription, Genetic, Protein Biosynthesis, Eukaryotic Initiation Factor-2, RNA-Binding Proteins, Protein Serine-Threonine Kinases, Gene Deletion, Neocortex, Neuroepithelial Cells, Mice, ELAV Proteins, Neurogenesis, Gene Knockout Techniques, Neural Stem Cells

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