Cited by 78RNA and protein synthesis mechanismsGenetics and Neurodevelopmental DisordersPI3K/AKT/mTOR signaling in cancer

BDNF stimulation of protein synthesis in cortical neurons requires the MAP kinase-interacting kinase MNK1

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Genheden, Maja, Kenney, Justin W., Johnston, Harvey E., Manousopoulou, Antigoni, Garbis, Spiros D., Proud, Christopher G.·2015·The Journal of Neuroscience

Abstract

Although the MAP kinase-interacting kinases (MNKs) have been known for >15 years, their roles in the regulation of protein synthesis have remained obscure. Here, we explore the involvement of the MNKs in brain-derived neurotrophic factor (BDNF)-stimulated protein synthesis in cortical neurons from mice. Using a combination of pharmacological and genetic approaches, we show that BDNF-induced upregulation of protein synthesis requires MEK/ERK signaling and the downstream kinase, MNK1, which phosphorylates eukaryotic initiation factor (eIF) 4E. Translation initiation is mediated by the interaction of eIF4E with the m(7)GTP cap of mRNA and with eIF4G. The latter interaction is inhibited by the interactions of eIF4E with partner proteins, such as CYFIP1, which acts as a translational repressor. We find that BDNF induces the release of CYFIP1 from eIF4E, and that this depends on MNK1. Finally, using a novel combination of BONCAT and SILAC, we identify a subset of proteins whose synthesis is upregulated by BDNF signaling via MNK1 in neurons. Interestingly, this subset of MNK1-sensitive proteins is enriched for functions involved in neurotransmission and synaptic plasticity. Additionally, we find significant overlap between our subset of proteins whose synthesis is regulated by MNK1 and those encoded by known FMRP-binding mRNAs. Together, our data implicate MNK1 as a key component of BDNF-mediated translational regulation in neurons.

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Crossref · 10.1523/jneurosci.2641-14.2015

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  • In Mnk1-null neurons, altered expression of a subset of proteins was observed, including 26 proteins whose encoding mRNAs are bound by FMRP in translating ribosomes.

    “In particular, in Mnk1-null neurons, altered expression of a subset of proteins was observed, including 26 proteins whose encoding mRNAs are bound by FMRP in translating ribosomes (Genheden et al., 2016; Darnell et al., 2011).”

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Research works printed but not linked: 2

  1. Leal G, Comprido D, Duarte CB (2014) BDNF-induced local protein syn- thesis and synaptic plasticity. Neuropharmacology 76:639 -656. CrossRef Medline
  2. Pop AS, Gomez-Mancilla B, Neri G, Willemsen R, Gasparini F (2014) Frag- ile X syndrome: a preclinical review on metabotropic glutamate receptor 5 (mGluR5) antagonists and drug development. Psychopharmacology (Berl) 231:1217-1226. CrossRef Medline

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Authors
Genheden, M., Kenney, J. W., Johnston, H. E., Manousopoulou, A., Garbis, S. D., & Proud, C. G.
Affiliations
  • University of Southampton (GB)
  • Southampton General Hospital (GB)
Venue
The Journal of Neuroscience
Published
2015-01-21
Volume
35
Issue
3
Pages
972-984
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2050998615
Cited by
78
References
9
Citations by year
2026: 3 · 2025: 5 · 2024: 6 · 2023: 2 · 2022: 8 · 2021: 3 · 2020: 5 · 2019: 8 · 2018: 9 · 2017: 9 · 2016: 13 · 2015: 7
FWCI
5.50
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • ePrints Soton (University of Southampton) (acceptedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion, cc-by)
Funders
  • Wellcome Trust (086688)
  • University of Southampton
  • Biotechnology and Biological Sciences Research Council (BB/I004483/1, BB/I004483)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
Keywords
brain-derived neurotrophic factor, MNK1, protein synthesis, cortical neurons, MEK/ERK signaling, eIF4E phosphorylation, CYFIP1, eIF4G, translational regulation, FMRP, synaptic plasticity, neurotransmission, BONCAT, SILAC
MeSH terms
Animals, Cerebral Cortex, Nerve Tissue Proteins, Neurons, Phosphorylation, Protein Biosynthesis, Signal Transduction, Up-Regulation, Protein Serine-Threonine Kinases, Brain-Derived Neurotrophic Factor, Eukaryotic Initiation Factor-4E, Adaptor Proteins, Signal Transducing, Mice

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