TAG-1 Multifunctionality Coordinates Neuronal Migration, Axon Guidance, and Fasciculation
Summary: Neuronal migration, axon fasciculation, and axon guidance need to be closely coordinated for neural circuit assembly. Spinal motor neurons (MNs) face unique challenges during development because their cell bodies reside within the central nervous system (CNS) and their axons project to vari...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-01-01
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| Series: | Cell Reports |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211124719317504 |
| _version_ | 1818951307042488320 |
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| author | Tracey A.C.S. Suter Sara V. Blagburn Sophie E. Fisher Heather M. Anderson-Keightly Kristen P. D’Elia Alexander Jaworski |
| author_facet | Tracey A.C.S. Suter Sara V. Blagburn Sophie E. Fisher Heather M. Anderson-Keightly Kristen P. D’Elia Alexander Jaworski |
| author_sort | Tracey A.C.S. Suter |
| collection | DOAJ |
| description | Summary: Neuronal migration, axon fasciculation, and axon guidance need to be closely coordinated for neural circuit assembly. Spinal motor neurons (MNs) face unique challenges during development because their cell bodies reside within the central nervous system (CNS) and their axons project to various targets in the body periphery. The molecular mechanisms that contain MN somata within the spinal cord while allowing their axons to exit the CNS and navigate to their final destinations remain incompletely understood. We find that the MN cell surface protein TAG-1 anchors MN cell bodies in the spinal cord to prevent their emigration, mediates motor axon fasciculation during CNS exit, and guides motor axons past dorsal root ganglia. TAG-1 executes these varied functions in MN development independently of one another. Our results identify TAG-1 as a key multifunctional regulator of MN wiring that coordinates neuronal migration, axon fasciculation, and axon guidance. : Suter et al. demonstrate that the motor neuron cell surface molecule TAG-1 confines motor neurons to the central nervous system, promotes motor axon fasciculation, and steers motor axons past inappropriate targets. This study highlights how a single cell adhesion molecule coordinates multiple steps in neuronal wiring through partially divergent mechanisms. Keywords: TAG-1, adhesion, motor neurons, neuronal migration, fasciculation, axon guidance, spinal cord, development |
| first_indexed | 2024-12-20T09:32:24Z |
| format | Article |
| id | doaj.art-7a627bfd59af41dc9100648421bbd4eb |
| institution | Directory Open Access Journal |
| issn | 2211-1247 |
| language | English |
| last_indexed | 2024-12-20T09:32:24Z |
| publishDate | 2020-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cell Reports |
| spelling | doaj.art-7a627bfd59af41dc9100648421bbd4eb2022-12-21T19:45:04ZengElsevierCell Reports2211-12472020-01-0130411641177.e7TAG-1 Multifunctionality Coordinates Neuronal Migration, Axon Guidance, and FasciculationTracey A.C.S. Suter0Sara V. Blagburn1Sophie E. Fisher2Heather M. Anderson-Keightly3Kristen P. D’Elia4Alexander Jaworski5Department of Neuroscience, Brown University, Providence, RI 02912, USA; Robert J. and Nancy D. Carney Institute for Brain Science, Providence, RI 02912, USADepartment of Neuroscience, Brown University, Providence, RI 02912, USA; Robert J. and Nancy D. Carney Institute for Brain Science, Providence, RI 02912, USADepartment of Neuroscience, Brown University, Providence, RI 02912, USA; Robert J. and Nancy D. Carney Institute for Brain Science, Providence, RI 02912, USADepartment of Neuroscience, Brown University, Providence, RI 02912, USADepartment of Neuroscience, Brown University, Providence, RI 02912, USA; Department of Biology, Providence College, Providence, RI 02918, USADepartment of Neuroscience, Brown University, Providence, RI 02912, USA; Robert J. and Nancy D. Carney Institute for Brain Science, Providence, RI 02912, USA; Corresponding authorSummary: Neuronal migration, axon fasciculation, and axon guidance need to be closely coordinated for neural circuit assembly. Spinal motor neurons (MNs) face unique challenges during development because their cell bodies reside within the central nervous system (CNS) and their axons project to various targets in the body periphery. The molecular mechanisms that contain MN somata within the spinal cord while allowing their axons to exit the CNS and navigate to their final destinations remain incompletely understood. We find that the MN cell surface protein TAG-1 anchors MN cell bodies in the spinal cord to prevent their emigration, mediates motor axon fasciculation during CNS exit, and guides motor axons past dorsal root ganglia. TAG-1 executes these varied functions in MN development independently of one another. Our results identify TAG-1 as a key multifunctional regulator of MN wiring that coordinates neuronal migration, axon fasciculation, and axon guidance. : Suter et al. demonstrate that the motor neuron cell surface molecule TAG-1 confines motor neurons to the central nervous system, promotes motor axon fasciculation, and steers motor axons past inappropriate targets. This study highlights how a single cell adhesion molecule coordinates multiple steps in neuronal wiring through partially divergent mechanisms. Keywords: TAG-1, adhesion, motor neurons, neuronal migration, fasciculation, axon guidance, spinal cord, developmenthttp://www.sciencedirect.com/science/article/pii/S2211124719317504 |
| spellingShingle | Tracey A.C.S. Suter Sara V. Blagburn Sophie E. Fisher Heather M. Anderson-Keightly Kristen P. D’Elia Alexander Jaworski TAG-1 Multifunctionality Coordinates Neuronal Migration, Axon Guidance, and Fasciculation Cell Reports |
| title | TAG-1 Multifunctionality Coordinates Neuronal Migration, Axon Guidance, and Fasciculation |
| title_full | TAG-1 Multifunctionality Coordinates Neuronal Migration, Axon Guidance, and Fasciculation |
| title_fullStr | TAG-1 Multifunctionality Coordinates Neuronal Migration, Axon Guidance, and Fasciculation |
| title_full_unstemmed | TAG-1 Multifunctionality Coordinates Neuronal Migration, Axon Guidance, and Fasciculation |
| title_short | TAG-1 Multifunctionality Coordinates Neuronal Migration, Axon Guidance, and Fasciculation |
| title_sort | tag 1 multifunctionality coordinates neuronal migration axon guidance and fasciculation |
| url | http://www.sciencedirect.com/science/article/pii/S2211124719317504 |
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