Cited by 528Genetics and Neurodevelopmental DisordersAutism Spectrum Disorder ResearchRNA and protein synthesis mechanisms

Autism-related deficits via dysregulated eIF4E-dependent translational control

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Gkogkas, Christos G., Khoutorsky, Arkady, Ran, Israeli, Rampakakis, Emmanouil, Nevarko, Tatiana, Weatherill, Daniel B., Vasuta, Cristina, Yee, Stephanie +8 more·2013·Nature

Abstract

Hyperconnectivity of neuronal circuits due to increased synaptic protein synthesis is thought to cause autism spectrum disorders (ASDs). The mammalian target of rapamycin (mTOR) is strongly implicated in ASDs by means of upstream signalling; however, downstream regulatory mechanisms are ill-defined. Here we show that knockout of the eukaryotic translation initiation factor 4E-binding protein 2 (4E-BP2)-an eIF4E repressor downstream of mTOR-or eIF4E overexpression leads to increased translation of neuroligins, which are postsynaptic proteins that are causally linked to ASDs. Mice that have the gene encoding 4E-BP2 (Eif4ebp2) knocked out exhibit an increased ratio of excitatory to inhibitory synaptic inputs and autistic-like behaviours (that is, social interaction deficits, altered communication and repetitive/stereotyped behaviours). Pharmacological inhibition of eIF4E activity or normalization of neuroligin 1, but not neuroligin 2, protein levels restores the normal excitation/inhibition ratio and rectifies the social behaviour deficits. Thus, translational control by eIF4E regulates the synthesis of neuroligins, maintaining the excitation-to-inhibition balance, and its dysregulation engenders ASD-like phenotypes.

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  • MIA alters key components of the TSC/mTOR signaling pathway with ultimate activation of the translation initiation factor EIF4E, which is predicted to alter regulation of neural progenitor cell divisions during midgestation.

    “Consistently, we found that MIA alters key components of the TSC/mTOR signaling pathway with ultimate activation of the translation initiation factor EIF4E which is predicted to alter the regulation of neural progenitor cell divisions during midgestation [127, 156–158].”
  • This hypothesis has been further elaborated by Santini and Klann and others, with new evidence supporting the crucial role of cap-dependent translation protein EIF4E in ASD pathophysiology.

    “This hypothesis has been further elaborated by Santini and Klann and others, with new evidence supporting the crucial role of cap-dependent translation protein EIF4E79, 88, 100, 101 in ASD pathophysiology.77”

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Authors
Gkogkas, C. G., Khoutorsky, A., Ran, I., Rampakakis, E., Nevarko, T., Weatherill, D. B., Vasuta, C., Yee, S., Truitt, M., Dallaire, P., Major, F., Lasko, P., Ruggero, D., Nader, K., Lacaille, J.-C., & Sonenberg, N.
Affiliations
  • McGill University (CA)
  • Université de Montréal (CA)
  • University of California, San Francisco (US)
  • Institute for Research in Immunology and Cancer (CA)
Corresponding author
  • Lacaille, Jean-Claude
  • Sonenberg, Nahum
Venue
Nature
Published
2012-11-21
Volume
493
Issue
7432
Pages
371-377
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2048862315
Cited by
522
References
46
Citations by year
2026: 20 · 2025: 31 · 2024: 23 · 2023: 29 · 2022: 31 · 2021: 27 · 2020: 42 · 2019: 45 · 2018: 33 · 2017: 37 · 2016: 49 · 2015: 59 · 2014: 53 · 2013: 40 · 2012: 2
FWCI
29.87
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • eScholarship@McGill (McGill) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Canadian Institutes of Health Research (MOP-114994), MOP93679, MOP-10848, MOP-44050)
  • National Cancer Institute (R01CA140456, R01CA154916)
  • National Institute of General Medical Sciences (R01GM088813)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
Keywords
autism spectrum disorder, eIF4E, 4E-BP2, translational regulation, mTOR signaling, neuroligin-1, neuroligin-2, synaptic protein synthesis, excitation-inhibition balance, social interaction deficits, cap-dependent translation, 4EGI-1
MeSH terms
Animals, Autistic Disorder, Male, Phenotype, Synapses, Protein Biosynthesis, Cell Adhesion Molecules, Neuronal, Mice, Knockout, Eukaryotic Initiation Factor-4E, Eukaryotic Initiation Factors, Mice

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