GABA-B1 Receptor-Null Schwann Cells Exhibit Compromised In Vitro Myelination.

Alessandro Faroni, Simona Melfi, Luca Franco Castelnovo, Veronica Bonalume, Deborah Colleoni, Paolo Magni, Marcos J Araúzo-Bravo, Rolland Reinbold, Valerio Magnaghi

Molecular neurobiology 2019 Feb

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GABA-B receptors are important for Schwann cell (SC) commitment to a non-myelinating phenotype during development. However, the P0-GABA-B1fl/fl conditional knockout mice, lacking the GABA-B1 receptor specifically in SCs, also presented axon modifications, suggesting SC non-autonomous effects through the neuronal compartment. In this in vitro study, we evaluated whether the specific deletion of the GABA-B1 receptor in SCs may induce autonomous or non-autonomous cross-changes in sensory dorsal root ganglia (DRG) neurons. To this end, we performed an in vitro biomolecular and transcriptomic analysis of SC and DRG neuron primary cultures from P0-GABA-B1fl/fl mice. We found that cells from conditional P0-GABA-B1fl/fl mice exhibited proliferative, migratory and myelinating alterations. Moreover, we found transcriptomic changes in novel molecules that are involved in peripheral neuron-SC interaction.

Citation

Alessandro Faroni, Simona Melfi, Luca Franco Castelnovo, Veronica Bonalume, Deborah Colleoni, Paolo Magni, Marcos J Araúzo-Bravo, Rolland Reinbold, Valerio Magnaghi. GABA-B1 Receptor-Null Schwann Cells Exhibit Compromised In Vitro Myelination. Molecular neurobiology. 2019 Feb;56(2):1461-1474