Bilateral chemogenetic activation of intratelencephalic neurons in motor cortex reduces spontaneous locomotor activity in mice
Atudorei, Mihai ; del Agua Villa, Christian ; Gether, Ulrik ; Cenci, Maria Angela LU
; Siebner, Hartwig Roman
and Rickhag, Mattias
(2025)
In Neurobiology of Disease
204.
- Abstract
Intratelencephalic neurons are a crucial class of cortical principal neurons that heavily innervate the striatum and cortical areas bilaterally. Their extensive cortico-cortical and cortico-striatal connectivity enables sensorimotor integration within the telencephalon, but their role in motor control remains poorly understood. Here, we used a chemogenetic approach to explore the role of intratelencephalic neurons in spontaneous locomotor activity. Bilateral chemogenetic activation of intratelencephalic Tlx3+ neurons in the mouse motor cortex reduced spontaneous locomotor activity in the open field, increasing states of freezing and immobility. This anti-motor effect was achieved in separate experiments with either... (More)
Intratelencephalic neurons are a crucial class of cortical principal neurons that heavily innervate the striatum and cortical areas bilaterally. Their extensive cortico-cortical and cortico-striatal connectivity enables sensorimotor integration within the telencephalon, but their role in motor control remains poorly understood. Here, we used a chemogenetic approach to explore the role of intratelencephalic neurons in spontaneous locomotor activity. Bilateral chemogenetic activation of intratelencephalic Tlx3+ neurons in the mouse motor cortex reduced spontaneous locomotor activity in the open field, increasing states of freezing and immobility. This anti-motor effect was achieved in separate experiments with either administration of two chemogenetic actuators, clozapine N-oxide and deschloroclozapine. A systemic administration of the dopamine D1 receptor agonist SKF82958 reversed the chemogenetic effect on locomotor activity. Selective chemogenetic stimulation of intratelencephalic neurons was confirmed through post-mortem c-Fos quantification in cortical layer 5 Tlx3+ neurons. The results establish a causal link between the activity level of intratelencephalic neurons in the motor cortex, spontaneous locomotor activity in the open field, and the dopamine system. The findings are compatible with the hypothesis that intratelencephalic neurons regulate spontaneous motor behavior via its bilateral cortico-striatal projections.
(Less)
- author
- Atudorei, Mihai
; del Agua Villa, Christian
; Gether, Ulrik
; Cenci, Maria Angela
LU
; Siebner, Hartwig Roman
and Rickhag, Mattias
- organization
- publishing date
- 2025-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Chemogenetics, Cortical microcircuit, Cortico-striatal projections, Intratelencephalic neurons, Locomotor activity
- in
- Neurobiology of Disease
- volume
- 204
- article number
- 106755
- publisher
- Academic Press
- external identifiers
-
- scopus:85211755035
- pmid:39608470
- ISSN
- 0969-9961
- DOI
- 10.1016/j.nbd.2024.106755
- language
- English
- LU publication?
- yes
- id
- a5bc2553-ff3c-4e37-b646-4b04dea6d070
- date added to LUP
- 2025-03-03 15:49:25
- date last changed
- 2025-07-08 02:38:39
@article{a5bc2553-ff3c-4e37-b646-4b04dea6d070,
abstract = {{<p>Intratelencephalic neurons are a crucial class of cortical principal neurons that heavily innervate the striatum and cortical areas bilaterally. Their extensive cortico-cortical and cortico-striatal connectivity enables sensorimotor integration within the telencephalon, but their role in motor control remains poorly understood. Here, we used a chemogenetic approach to explore the role of intratelencephalic neurons in spontaneous locomotor activity. Bilateral chemogenetic activation of intratelencephalic Tlx3<sup>+</sup> neurons in the mouse motor cortex reduced spontaneous locomotor activity in the open field, increasing states of freezing and immobility. This anti-motor effect was achieved in separate experiments with either administration of two chemogenetic actuators, clozapine N-oxide and deschloroclozapine. A systemic administration of the dopamine D1 receptor agonist SKF82958 reversed the chemogenetic effect on locomotor activity. Selective chemogenetic stimulation of intratelencephalic neurons was confirmed through post-mortem c-Fos quantification in cortical layer 5 Tlx3<sup>+</sup> neurons. The results establish a causal link between the activity level of intratelencephalic neurons in the motor cortex, spontaneous locomotor activity in the open field, and the dopamine system. The findings are compatible with the hypothesis that intratelencephalic neurons regulate spontaneous motor behavior via its bilateral cortico-striatal projections.</p>}},
author = {{Atudorei, Mihai and del Agua Villa, Christian and Gether, Ulrik and Cenci, Maria Angela and Siebner, Hartwig Roman and Rickhag, Mattias}},
issn = {{0969-9961}},
keywords = {{Chemogenetics; Cortical microcircuit; Cortico-striatal projections; Intratelencephalic neurons; Locomotor activity}},
language = {{eng}},
publisher = {{Academic Press}},
series = {{Neurobiology of Disease}},
title = {{Bilateral chemogenetic activation of intratelencephalic neurons in motor cortex reduces spontaneous locomotor activity in mice}},
url = {{http://dx.doi.org/10.1016/j.nbd.2024.106755}},
doi = {{10.1016/j.nbd.2024.106755}},
volume = {{204}},
year = {{2025}},
}