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Functional diversity for body actions in the mesencephalic locomotor region

Ferreira-Pinto, Manuel J. and Kanodia, Harsh and Falasconi, Antonio and Sigrist, Markus and Esposito, Maria S. and Arber, Silvia. (2021) Functional diversity for body actions in the mesencephalic locomotor region. Cell, 184 (17). pp. 4564-4578.e18.

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Official URL: https://edoc.unibas.ch/84164/

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Abstract

The mesencephalic locomotor region (MLR) is a key midbrain center with roles in locomotion. Despite extensive studies and clinical trials aimed at therapy-resistant Parkinson's disease (PD), debate on its function remains. Here, we reveal the existence of functionally diverse neuronal populations with distinct roles in control of body movements. We identify two spatially intermingled glutamatergic populations separable by axonal projections, mouse genetics, neuronal activity profiles, and motor functions. Most spinally projecting MLR neurons encoded the full-body behavior rearing. Loss- and gain-of-function optogenetic perturbation experiments establish a function for these neurons in controlling body extension. In contrast, Rbp4-transgene-positive MLR neurons project in an ascending direction to basal ganglia, preferentially encode the forelimb behaviors handling and grooming, and exhibit a role in modulating movement. Thus, the MLR contains glutamatergic neuronal subpopulations stratified by projection target exhibiting roles in action control not restricted to locomotion.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Neurobiology > Cell Biology (Arber)
09 Associated Institutions > Friedrich Miescher Institut FMI
UniBasel Contributors:Arber, Silvia and Neves Ferreira Pinto, Manuel Joao and Kanodia, Harsh and Sigrist, Markus
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Cell Press
ISSN:0092-8674
e-ISSN:1097-4172
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:31 Aug 2021 13:50
Deposited On:31 Aug 2021 13:50

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