Cited by 84Epilepsy research and treatmentTuberous Sclerosis Complex ResearchGenetics and Neurodevelopmental Disorders

mTOR signaling pathway genes in focal epilepsies

Baulac, S.·2016·Progress in Brain Research

Abstract

Focal epilepsies, where seizures initiate in spatially limited networks, are the most frequent epilepsy type, accounting for two-thirds of patients. Focal epilepsies have long been thought to be acquired disorders; several focal epilepsy syndromes are now proven to be (genetically heterogeneous) monogenic disorders. While earlier genetic studies have demonstrated a strong contribution of ion channel and neurotransmitter receptor genes, or synaptic secreted protein genes, later work has revealed a new class of genes encoding components of the mechanistic target of rapamycin (mTOR) signal transduction pathway. The mTOR pathway controls a myriad of biological processes among which cell growth and protein synthesis in response to several extracellular and intracellular. Recently, germline mutations have been found in genes encoding the components of the GATOR1 complex (DEPDC5, NPRL2, NPRL3), a repressor of mTORC1. These mutations are increasingly recognized as causing a wide and yet evolving spectrum of focal epilepsy syndromes, with and without cortical structural abnormalities (usually focal cortical dysplasia). Brain somatic mutations in the gene encoding mTOR (MTOR) have recently been linked to focal cortical dysplasia and other associated brain pathologies including hemimegalencephaly. This chapter reviews the genetics and neurobiology of DEPDC5, NPRL2, and NPRL3, and summarizes the clinical and molecular spectrum of GATOR1-related epilepsies.

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Crossref · 10.1016/bs.pbr.2016.04.013

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  • KICSTOR plays a role in the GATOR1-dependent repression of mTORC1 signaling.

    “Consistent with the notion that these abnormalities are associated with mTORC1 hyperactivation and GATOR1 inactivation (Baldassari et al., 2016; Baulac, 2016), KICSTOR clearly plays a role in the GATOR1-dependent repression of mTORC1 signaling.”

    From Signal integration in the (m)TORC1 growth pathway (2018) · cites this paper as Baulac, 2016

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Authors
Baulac, S.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
Baulac, S.
Venue
Progress in Brain Research
Publisher
Elsevier
Published
2016
Volume
226
Pages
61-79
ISSN
0079-6123 (ISSN-L)
OpenAlex
W2469910147
Cited by
84
References
41
Citations by year
2026: 4 · 2025: 8 · 2024: 6 · 2023: 12 · 2022: 6 · 2021: 9 · 2020: 10 · 2019: 7 · 2018: 12 · 2017: 5 · 2016: 5
FWCI
45.92
Type
book chapter
Language
en
Open access
closed
Locations
  • Progress in brain research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Agence Nationale de la Recherche
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Epilepsy research and treatment
  • Health Sciences › Medicine › Physiology › Tuberous Sclerosis Complex Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
focal epilepsy, mTOR signaling, GATOR1 complex, DEPDC5, NPRL2, NPRL3, mTOR, germline mutations, somatic mutations, focal cortical dysplasia, hemimegalencephaly, monogenic epilepsy, mTORC1, epilepsy genetics
MeSH terms
Animals, Epilepsies, Partial, Humans, Mutation, Repressor Proteins, Signal Transduction, Genetic Predisposition to Disease, GTPase-Activating Proteins, Tumor Suppressor Proteins, TOR Serine-Threonine Kinases

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