Cited by 74Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersNeuroscience and Neuropharmacology Research

Rare autism-associated variants implicate syntaxin 1 (STX1 R26Q) phosphorylation and the dopamine transporter (HDAT R51W) in dopamine neurotransmission and behaviors

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Cartier, Etienne, Hamilton, Peter J., Belovich, Andrea N., Shekar, Aparna, Campbell, Nicholas G., Saunders, Christine, Andreassen, Thorvald F., Gether, Ulrik +6 more·2015·EBioMedicine

Abstract

BACKGROUND: Syntaxin 1 (STX1) is a presynaptic plasma membrane protein that coordinates synaptic vesicle fusion. STX1 also regulates the function of neurotransmitter transporters, including the dopamine (DA) transporter (DAT). The DAT is a membrane protein that controls DA homeostasis through the high-affinity re-uptake of synaptically released DA. METHODS: We adopt newly developed animal models and state-of-the-art biophysical techniques to determine the contribution of the identified gene variants to impairments in DA neurotransmission observed in autism spectrum disorder (ASD). OUTCOMES: Here, we characterize two independent autism-associated variants in the genes that encode STX1 and the DAT. We demonstrate that each variant dramatically alters DAT function. We identify molecular mechanisms that converge to inhibit reverse transport of DA and DA-associated behaviors. These mechanisms involve decreased phosphorylation of STX1 at Ser14 mediated by casein kinase 2 as well as a reduction in STX1/DAT interaction. These findings point to STX1/DAT interactions and STX1 phosphorylation as key regulators of DA homeostasis. INTERPRETATION: We determine the molecular identity and the impact of these variants with the intent of defining DA dysfunction and associated behaviors as possible complications of ASD.

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Crossref · 10.1016/j.ebiom.2015.01.007

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  • Two ASD-associated independent gene variants, including a gene variant regulating STX1 phosphorylation and dopamine transporter, that alter dopamine transporter function have been identified.

    “Recently, two ASD associated independent gene variants, including a gene variants regulating STX1 phosphorylation (regulates neurotransmitter transporter) and dopamine transporter, that alter dopamine transporter function have been identified [188].”

    From Vitamin D and Autism Spectrum Disorder: A Literature Review (2016) · cites this paper as [188]

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Authors
Cartier, E., Hamilton, P. J., Belovich, A. N., Shekar, A., Campbell, N. G., Saunders, C., Andreassen, T. F., Gether, U., Veenstra-Vanderweele, J., Sutcliffe, J. S., Ulery-Reynolds, P. G., Erreger, K., Matthies, H. J. G., & Galli, A.
Affiliations
  • Vanderbilt University (US)
  • University of Copenhagen (DK)
  • New York State Psychiatric Institute (US)
Corresponding author
  • Erreger, Kevin
  • Matthies, Heinrich J.G.
  • Galli, Aurelio
Venue
EBioMedicine
Publisher
Elsevier BV
Published
2015-02
Volume
2
Issue
2
Pages
135-146
ISSN
2352-3964 (ISSN-L)
OpenAlex
W2137284688
Cited by
74
References
61
Citations by year
2026: 1 · 2025: 5 · 2024: 2 · 2023: 2 · 2022: 6 · 2021: 10 · 2020: 9 · 2019: 6 · 2018: 9 · 2017: 13 · 2016: 7 · 2015: 4
FWCI
6.61
Type
journal article
Language
en
Open access
Locations
  • EBioMedicine (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Science Foundation (0909667)
  • Danmarks Frie Forskningsfond
  • National Institutes of Health (DA012408)
  • National Institute of Mental Health (R01MH094604)
  • National Institute on Drug Abuse (P01DA012408, F31DA035535, R01DA038058)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
autism spectrum disorder, syntaxin-1, dopamine transporter, dopamine signaling, dopamine homeostasis, casein kinase 2, synaptic vesicle fusion, rare variants, animal models, dopamine reuptake

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