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Bone morphogenetic proteins are required in vivo for the generation of sympathetic neurons.

机译:体内需要骨形态发生蛋白来产生交感神经元。

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Bone morphogenetic proteins (BMPs) induce autonomic neurogenesis in neural crest cultures and stimulate sympathetic neuron development when overexpressed in vivo. We demonstrate that inhibition of BMPs in the chick embryo bythe BMP antagonist Noggin prevents sympathetic neuron generation. In Noggin-treated embryos, the noradrenergic marker genes tyrosine hydroxylase (TH) and dopamine-beta-hydroxylase (DBH), panneuronal neurofilament 160 (NF160) and SCG10 genes, and the transcriptional regulators Phox2b and Phox2a are not expressed in sympathetic ganglia. Whereas initial ganglion development is not affected, the expression of the basic helix-loop-helix transcription factor Cash-1 is strongly reduced. These results demonstrate that BMPs are essential for sympathetic neuron development and establish Cash-1 and Phox2 genes as downstream effectors of BMPs in this lineage.
机译:骨形态发生蛋白(BMP)在神经c培养物中诱导自主神经发生,并在体内过表达时刺激交感神经元发育。我们证明,BMP拮抗剂Noggin对雏鸡胚胎中BMP的抑制作用可防止交感神经元的产生。在经过Noggin处理的胚胎中,去甲肾上腺素能标记基因酪氨酸羟化酶(TH)和多巴胺β-羟化酶(DBH),泛神经神经丝160(NF160)和SCG10基因以及转录调节因子Phox2b和Phox2a在交感神经节中不表达。尽管初始神经节发育不受影响,但基本螺旋-环-螺旋转录因子Cash-1的表达却大大降低。这些结果表明BMP对交感神经元的发展至关重要,并建立Cash-1和Phox2基因作为该谱系中BMP的下游效应子。

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