Cited by 59Nicotinic Acetylcholine Receptors StudyPrenatal Substance Exposure EffectsSmoking Behavior and Cessation

Cortico-thalamic connectivity is vulnerable to nicotine exposure during early postnatal development through α4/β2/α5 nicotinic acetylcholine receptors

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Heath, Christopher J, King, Sarah L, Gotti, Cecilia, Marks, Michael J, Picciotto, Marina R·2010·Neuropsychopharmacology

Abstract

Tobacco smoke exposure during development can result in lasting alterations in sensory processing and attention. This suggests that some constituent of smoke, such as the primary addictive component, nicotine, alters neurodevelopment. Although many effects of developmental nicotine exposure have been identified in humans and animal models, very few mechanistic studies have identified the molecular and anatomical basis for a defined behavioral consequence of developmental exposure. We show in this study that a mouse model of developmental nicotine exposure results in hypersensitive passive avoidance in adulthood. We have used transgenic mice in which β2 subunit containing nicotinic acetylcholine receptors (β2* nAChRs) are expressed exclusively on corticothalamic neurons (β2 tr(CT) mice) to identify the receptor subtypes involved and also to define the circuit level site of action responsible for this persistent, nicotine-induced behavioral phenotype. Further characterization of the native nAChRs expressed in this circuit indicates that both (α4)(2)(β2)(3) and (α4)(2)(β2)(2)α5 nAChR subtypes are present in corticothalamic projections. Consistent with a role for (α4)(2)(β2)(2)α5 nAChRs in mediating the effect of developmental nicotine exposure on adult passive avoidance behavior, constitutive deletion of the α5 nAChR subunit also alters this behavior. A critical period for this developmental consequence of nicotine exposure was defined by limiting exposure to the early post-natal period. Taken together, these studies identify a novel consequence of developmental nicotine exposure in the mouse, define the nAChR subtypes and neural circuit involved in this behavioral change and delimit the neurodevelopmental period critical for vulnerability to a behavioral alteration that persists into adulthood.

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Crossref · 10.1038/npp.2010.130

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  • Nicotine administration during the early postnatal period alters performance in the passive avoidance task in normal mice and in mice with expression of β2 nAChRs exclusively in corticothalamic neurons.

    “Nicotine administration during this same period alters performance in the passive avoidance task in normal mice as well as in mice with expression of β2 Ã nAChRs exclusively in corticothalamic neurons (Heath et al. 2010)”

    From Mechanisms of Nicotine Addiction (2021) · cites this paper as Heath et al. 2010

    The Results section reports that nicotine exposure from birth to weaning altered passive avoidance in mice. It also reports altered performance in mice expressing β2-containing nAChRs exclusively in corticothalamic neurons, but those mice received nicotine throughout gestation as well as postnatally; the paper does not establish the effect of postnatal-only exposure in that group (page not available in our copy). (LLM, conf=0.87)

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  • α5/β2 nAChRs on layer 6 cortical glutamatergic projection neurons to the thalamus are essential in maturation of this circuit and for normal adult performance in passive avoidance.

    “α5/ β2 Ã nAChRs on layer 6 cortical glutamatergic projection neurons to the thalamus are essential in maturation of this circuit and for normal adult performance in passive avoidance, a somatosensory aversive learning task (King et al. 2003;Heath et al. 2010).”

    From Mechanisms of Nicotine Addiction (2021) · cites this paper as Heath et al. 2010

    The Discussion (page unavailable) states that corticothalamic neurons must express β2 and α5 subunits for normal passive avoidance performance. It also says the knockout results suggest an α5-mediated current is important for normal circuit maturation, but does not establish that these receptors are essential for maturation. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Signaling through nicotinic acetylcholine receptors is important for establishing critical periods for activity-dependent shaping of visual cortical function and maturation of thalamocortical and corticothalamic glutamatergic synapses.

    “In addition, signaling through nAChRs is also important for establishing critical periods for activity-dependent shaping of visual cortical function (Morishita et al., 2010) and maturation of thalamocortical (Aramakis and Metherate, 1998; Aramakis et al., 2000; Hsieh et al., 2002) and corticothalamic (Heath et al., 2010; Horst et al., 2012; King et al., 2003; Picciotto et al., 1995) glutamatergic”
  • Developmental nicotine exposure alters processing of somatosensory stimuli in adult mice via α4β2α5 nicotinic acetylcholine receptors expressed in corticothalamic projections.

    “We have shown previously that developmental nicotine exposure alters the processing of somatosensory stimuli in adult mice via α4β2α5 nAChRs expressed in corticothalamic projections [27].”
  • The α4β2α5 nicotinic acetylcholine receptor subtype may have a role in refinement of layer VI corticothalamic terminals.

    “It has also been suggested that the α4β2α5 nAChR subtype may have a role in the refinement of the layer VI corticothalamic terminals that permit cortical feedback modulation of thalamic activity [27, 28].”

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Authors
Heath, C. J., King, S. L., Gotti, C., Marks, M. J., & Picciotto, M. R.
Affiliations
  • Yale University (US)
  • University of Sussex (GB)
  • University of Milan (IT)
  • University of Colorado Boulder (US)
Corresponding author
Picciotto, Marina R
Venue
Neuropsychopharmacology
Published
2010-08-25
Volume
35
Issue
12
Pages
2324-2338
ISSN
  • 0893-133X (ISSN-L)
  • 1740-634X
OpenAlex
W2139868719
Cited by
59
References
59
Citations by year
2026: 2 · 2025: 2 · 2024: 1 · 2023: 3 · 2022: 3 · 2021: 1 · 2020: 3 · 2019: 3 · 2018: 7 · 2017: 1 · 2016: 5 · 2015: 3 · 2014: 6 · 2013: 6 · 2012: 9
FWCI
2.05
Type
journal article
Language
en
Open access
Locations
  • Neuropsychopharmacology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Figshare (submittedVersion)
  • Open Research Online (The Open University) (submittedVersion)
Funders
  • Royal Society
  • European Commission (202088)
  • National Institutes of Health (DA10455, DA00436)
  • Medical Research Council (G0802715)
  • National Institute on Drug Abuse (K02DA000436, DA 10455, P30DA015663, R01DA003194, R29DA010455, R01DA010455, DA 00436, R37DA014241)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Prenatal Substance Exposure Effects
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
Keywords
corticothalamic neurons, nicotinic acetylcholine receptors, passive avoidance, hypersensitivity, postnatal development, brain development, transgenic mice, critical period, tobacco smoke
MeSH terms
Animals, Animals, Newborn, Avoidance Learning, Cerebral Cortex, Female, Male, Mice, Inbred C57BL, Mice, Transgenic, Neural Pathways, Nicotine, Pregnancy, Prenatal Exposure Delayed Effects, Radioligand Assay, Receptors, Nicotinic, Thalamus, Mice

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