Cited by 30Neurotransmitter Receptor Influence on BehaviorAxon Guidance and Neuronal SignalingNeuroscience and Neuropharmacology Research

Amphetamine disrupts dopamine axon growth in adolescence by a sex-specific mechanism in mice

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Reynolds, Lauren M., Hernandez, Giovanni, MacGowan, Del, Popescu, Christina, Nouel, Dominique, Cuesta, Santiago, Burke, Samuel, Savell, Katherine E. +16 more·2023·Nature Communications

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Abstract

Initiating drug use during adolescence increases the risk of developing addiction or other psychopathologies later in life, with long-term outcomes varying according to sex and exact timing of use. The cellular and molecular underpinnings explaining this differential sensitivity to detrimental drug effects remain unexplained. The Netrin-1/DCC guidance cue system segregates cortical and limbic dopamine pathways in adolescence. Here we show that amphetamine, by dysregulating Netrin-1/DCC signaling, triggers ectopic growth of mesolimbic dopamine axons to the prefrontal cortex, only in early-adolescent male mice, underlying a male-specific vulnerability to enduring cognitive deficits. In adolescent females, compensatory changes in Netrin-1 protect against the deleterious consequences of amphetamine on dopamine connectivity and cognitive outcomes. Netrin-1/DCC signaling functions as a molecular switch which can be differentially regulated by the same drug experience as function of an individual’s sex and adolescent age, and lead to divergent long-term outcomes associated with vulnerable or resilient phenotypes.

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  • Amphetamine exposure in early adolescence has opposite sex-dependent outcomes as exposure in mid-adolescence.

    “In the case of amphetamine exposure in adolescence, for example, exposure in early adolescence had opposite sex-dependent outcomes as exposure in mid-adolescence [51].”

    From Adolescent nicotine exposure and persistent neurocircuitry changes: unveiling lifelong psychiatric risks (2025) · cites this paper as [51]

    The Discussion reports an age-dependent reversal in which sex shows reduced Dcc expression after amphetamine: males in early adolescence and females in mid-adolescence. But it does not report opposite enduring outcomes: females exposed at either age were protected from the dopamine-innervation and cognitive deficits observed in early-exposed males. The claim is supported for the molecular response, not for long-term outcomes. (LLM, conf=0.86)

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  • Striking, age-dependent differences can be reported in the enduring effects of the same experience on neural circuitry depending on the adolescent period in which this experience occurred.

    “striking, age-dependent differences can be reported in the enduring effects of the same experience on neural circuitry depending on the adolescent period in which this experience occurred [48–51].”
  • Amphetamine in adolescence misroutes a subset of dopamine axons to the PFC in an age- and sex-dependent manner, leading to pathological ectopic innervation associated with cognitive deficits.

    “For example, amphetamine in adolescence misroutes a subset of dopamine axons to the PFC in an age- and sex-dependent manner, leading to a pathological ectopic innervation associated with cognitive deficits [51].”

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  1. [110]Paxinos, G. & Franklin, K. B. J. The mouse brain in stereotaxic coordinates (Academic Press, 2008).

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Authors
Reynolds, L. M., Hernandez, G., MacGowan, D., Popescu, C., Nouel, D., Cuesta, S., Burke, S., Savell, K. E., Zhao, J., Restrepo-Lozano, J. M., Giroux, M., Israel, S., Orsini, T., He, S., Wodzinski, M., Avramescu, R. G., Pokinko, M., Epelbaum, J. G., Niu, Z., Pantoja-Urbán, A. H., Trudeau, L.-É., Kolb, B., Day, J. J., & Flores, C.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Douglas Mental Health University Institute (CA)
  • Rutgers, The State University of New Jersey (US)
  • Université de Montréal (CA)
  • University of Alabama at Birmingham (US)
  • University of Lethbridge (CA)
Corresponding author
Flores, Cecilia
Venue
Nature Communications
Published
2023-07-07
Volume
14
Issue
1
Pages
4035-4035
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4383499952
Cited by
30
References
121
Citations by year
2026: 2 · 2025: 10 · 2024: 13 · 2023: 5
FWCI
3.63
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • U.S. Department of Health & Human Services | NIH | National Institute on Drug Abuse (R01DA037911, F31DA041188)
  • Gouvernement du Canada | Natural Sciences and Engineering Research Council of Canada (RGPIN-2020-04703)
  • Gouvernement du Canada | Canadian Institutes of Health Research (156272)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
amphetamine, adolescence, sex differences, netrin-1, DCC receptor, axon guidance, mesolimbic dopamine system, prefrontal cortex, cognitive impairment, drug vulnerability, adolescent age
MeSH terms
Netrin-1, DCC Receptor, Amphetamine, Animals, Axons, Dopamine, Female, Male, Mice

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