Generation of sensory neurons is stimulated by leukemia inhibitory factor.
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The processes that regulate the development of peripheral neurons from their precursors in the embryonic neural crest are essentially unknown. In this report, we show that leukemia inhibitory factor stimulates the generation of neurons in cultures of mouse neural crest. These neurons have the morphology of sensory neurons and contain neuropeptides found in mammalian sensory neurons. Consistent with these neurons being of the sensory lineage is the finding that they arise from nondividing precursors within the neural crest. In addition, we show that leukemia inhibitory factor supports the generation and/or maturation of sensory neurons in cultures of cells obtained from embryonic dorsal root ganglia. In cultures of postnatal dorsal root ganglia, which contain mature sensory neurons, leukemia inhibitory factor acts directly as a survival molecule on the majority of neurons. IMAGES:
