Synergistic integration of Netrin and ephrin axon guidance signals by spinal motor neurons

Sebastian Poliak, Daniel Morales, Louis-Philippe Croteau, Dayana Krawchuk, Elena Palmesino, Susan Morton, Jean-François Cloutier, Frederic Charron, Matthew B Dalva, Susan L Ackerman, Tzu-Jen Kao, Artur Kania

研究成果: 雜誌貢獻文章同行評審

54 引文 斯高帕斯(Scopus)


During neural circuit assembly, axonal growth cones are exposed to multiple guidance signals at trajectory choice points. While axonal responses to individual guidance cues have been extensively studied, less is known about responses to combination of signals and underlying molecular mechanisms. Here, we studied the convergence of signals directing trajectory selection of spinal motor axons entering the limb. We first demonstrate that Netrin-1 attracts and repels distinct motor axon populations, according to their expression of Netrin receptors. Quantitative in vitro assays demonstrate that motor axons synergistically integrate both attractive or repulsive Netrin-1 signals together with repulsive ephrin signals. Our investigations of the mechanism of ephrin-B2 and Netrin-1 integration demonstrate that the Netrin receptor Unc5c and the ephrin receptor EphB2 can form a complex in a ligand-dependent manner and that Netrin-ephrin synergistic growth cones responses involve the potentiation of Src family kinase signaling, a common effector of both pathways.
出版狀態已發佈 - 2015


深入研究「Synergistic integration of Netrin and ephrin axon guidance signals by spinal motor neurons」主題。共同形成了獨特的指紋。