Cited by 311Memory and Neural MechanismsNeuroscience and Neuropharmacology ResearchPI3K/AKT/mTOR signaling in cancer

mTORC2 controls actin polymerization required for consolidation of long-term memory

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Huang, Wei, Zhu, Ping Jun, Zhang, Shixing, Zhou, Hongyi, Stoica, Loredana, Galiano, Mauricio, Krnjević, Krešimir, Roman, Gregg +1 more·2013·Nature Neuroscience

Abstract

A major goal of biomedical research is the identification of molecular and cellular mechanisms that underlie memory storage. Here we report a previously unknown signaling pathway that is necessary for the conversion from short- to long-term memory. The mammalian target of rapamycin (mTOR) complex 2 (mTORC2), which contains the regulatory protein Rictor (rapamycin-insensitive companion of mTOR), was discovered only recently and little is known about its function. We found that conditional deletion of Rictor in the postnatal murine forebrain greatly reduced mTORC2 activity and selectively impaired both long-term memory (LTM) and the late phase of hippocampal long-term potentiation (L-LTP). We also found a comparable impairment of LTM in dTORC2-deficient flies, highlighting the evolutionary conservation of this pathway. Actin polymerization was reduced in the hippocampus of mTORC2-deficient mice and its restoration rescued both L-LTP and LTM. Moreover, a compound that promoted mTORC2 activity converted early LTP into late LTP and enhanced LTM. Thus, mTORC2 could be a therapeutic target for the treatment of cognitive dysfunction.

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Authors
Huang, W., Zhu, P. J., Zhang, S., Zhou, H., Stoica, L., Galiano, M., Krnjević, K., Roman, G., & Costa-Mattioli, M.
Affiliations
  • Baylor College of Medicine (US)
  • University of Houston (US)
  • McGill University (CA)
Venue
Nature Neuroscience
Published
2013-03-03
Volume
16
Issue
4
Pages
441-448
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W1972346280
Cited by
307
References
71
Citations by year
2026: 10 · 2025: 17 · 2024: 22 · 2023: 16 · 2022: 26 · 2021: 21 · 2020: 19 · 2019: 23 · 2018: 27 · 2017: 28 · 2016: 26 · 2015: 29 · 2014: 23 · 2013: 18 · 2012: 1
FWCI
17.55
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Conicet (submittedVersion, cc-by-nc-sa)
Funders
  • Vanderbilt University
  • National Institutes of Health (076708, 096816)
  • National Institute of Mental Health (MH091305, 096816, R01MH096816, MH 096816)
  • National Institute of Neurological Disorders and Stroke (NS 076708, R01NS076708)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
Keywords
mTORC2, Rictor, actin polymerization, long-term memory consolidation, synaptic plasticity, hippocampal long-term potentiation, actin dynamics, conditional knockout mice, Drosophila
MeSH terms
Mechanistic Target of Rapamycin Complex 2, Actins, Animals, Drosophila, Hippocampus, Male, Mice, Inbred C57BL, Mice, Transgenic, Organ Culture Techniques, Long-Term Potentiation, Mice, Knockout, Multiprotein Complexes, Mice, Memory, Long-Term, Polymerization, TOR Serine-Threonine Kinases

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