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| DOI | 10.3389/FCELL.2021.612645 | ||||
| Año | 2021 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Neurogenesis is achieved through a sequence of steps that include specification and differentiation of progenitors into mature neurons. Frequently, precursors migrate to distinct positions before terminal differentiation. The Slit-Robo pathway, formed by the secreted ligand Slit and its membrane bound receptor Robo, was first discovered as a regulator of axonal growth. However, today, it is accepted that this pathway can regulate different cellular processes even outside the nervous system. Since most of the studies performed in the nervous system have been focused on axonal and dendritic growth, it is less clear how versatile is this signaling pathway in the developing nervous system. Here we describe the participation of the Slit-Robo pathway in the development of motion sensitive neurons of the Drosophila visual system. We show that Slit and Robo receptors are expressed in different stages during the neurogenesis of motion sensitive neurons. Furthermore, we find that Slit and Robo regulate multiple aspects of their development including neuronal precursor migration, cell segregation between neural stem cells and daughter cells and formation of their connectivity pattern. Specifically, loss of function of slit or robo receptors in differentiated motion sensitive neurons impairs dendritic targeting, while knocking down robo receptors in migratory progenitors or neural stem cells leads to structural defects in the adult optic lobe neuropil, caused by migration and cell segregation defects during larval development. Thus, our work reveals the co-option of the Slit-Robo signaling pathway in distinct developmental stages of a neural lineage.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Guzman-Palma, Pablo | Hombre |
Pontificia Universidad Católica de Chile - Chile
|
| 2 | CONTRERAS-SEPULVEDA, ESTEBAN GONZALO | Hombre |
Universidad de Chile - Chile
|
| 3 | Mora, Natalia | Mujer |
Sorbonne Univ - Francia
Sorbonne Université - Francia |
| 4 | Smith, Macarena | Mujer |
Pontificia Universidad Católica de Chile - Chile
|
| 5 | González-Ramírez, María Constanza | Mujer |
Pontificia Universidad Católica de Chile - Chile
|
| 5 | González-Ramírez, M. Constanza | - |
Pontificia Universidad Católica de Chile - Chile
|
| 6 | CAMPUSANO-ASTORGA, JORGE MAURICIO | Hombre |
Pontificia Universidad Católica de Chile - Chile
|
| 7 | JARA-WILDE, J. | Mujer |
Universidad de Chile - Chile
|
| 8 | Hassan, Bassem A. | Hombre |
Sorbonne Univ - Francia
Sorbonne Université - Francia |
| 9 | OLIVA-OLAVE, CARLOS ANDRES | Hombre |
Pontificia Universidad Católica de Chile - Chile
|
| Fuente |
|---|
| CONICYT FONDECYT |
| ECOS-CONICYT |
| Advanced Microscopy Facility UC |
| Sorbonne Universite |
| program "Investissements d'avenir" |
| Investissements d’avenir |
| Sorbonne Universite Emergence grant |
| Roger De Spoelberch Foundation Prize |
| Paris Brain Institute |
| Fondation Roger de Spoelberch |
| Agradecimiento |
|---|
| This work was supported by CONICYT FONDECYT Initiation on Research #11150610, CONICYT FONDECYT Regular #1191424 and ECOS-CONICYT 170009 to CO, CONICYT FONDECYT regular #1171800 and ICN_09-015 to JS, and the program "Investissements d'avenir" ANR-10-IAIHU-06, Paris Brain Institute core funding, a Sorbonne Universite Emergence grant and the Roger De Spoelberch Foundation Prize to BH. |
| We are grateful to the Advanced Microscopy Facility UC for support in image acquisition, the Hybridoma Bank for antibodies and the Bloomington stock Center for fly strains. We are also grateful to Barry Dickson for Robo-HA knock-in lines, Patricio Olguín for the repo-GAL4, UAS-CD8-RFP line and Andrea Brand for Dpn antibody. We would like to thank members of the Oliva and Campusano labs for discussions. Funding. This work was supported by CONICYT FONDECYT Initiation on Research #11150610, CONICYT FONDECYT Regular #1191424 and ECOS-CONICYT 170009 to CO, CONICYT FONDECYT regular #1171800 and ICN_09-015 to JS, and the program “Investissements d’avenir” ANR-10-IAIHU-06, Paris Brain Institute core funding, a Sorbonne Université Emergence grant and the Roger De Spoelberch Foundation Prize to BH. |