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Characterization of GRP as a functional neuropeptide in basal chordate amphioxus

机译:GRP作为基础骨曲弯症的功能性神经肽的特征

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Amphioxus belongs to the subphylum cephalochordata, an extant representative of the most basal chordates, whose regulation of endocrine system remains ambiguous. Here we clearly demonstrated the existence of a functional GRP neuropeptide in amphioxus, which was able to interact with GRP receptor, activate both PKC and PKA pathways, increase gh, igf, and vegf expression. We also showed that the transcription level of amphioxus grp was affected by temperature and light, indicating the role of this gene in the regulation of energy balance and circadian rhythms. In addition, the expression of the amphioxus grp was detected in cerebral vesicle that has been proposed to be the homologous organ of vertebrate brain. These data collectively suggested that a functional GRP neuropeptide had already emerged in amphioxus, which provided insights into the evolutionary origin of GRP in chordate and the functional homology between the cerebral vesicle and vertebrate brain. (C) 2019 Elsevier B.V. All rights reserved.
机译:Amphioxus属于亚伯里克·洛奇纳塔,其基本内分泌系统调节仍然存在薄弱的代表。在这里,我们清楚地证明了Amphioxus的功能性GRP神经肽的存在,其能够与GRP受体相互作用,激活PKC和PKA途径,增加GH,IGF和VEGF表达。我们还表明,Amphioxus GRP的转录水平受温度和光的影响,表明该基因在能量平衡和昼夜节律中的作用。此外,在脑囊泡中检测到Amphioxus GRP的表达,所述脑囊泡被提出为脊椎动物脑的同源器官。这些数据共同提出了常态的GRP神经肽在Amphioxus中已经出现,这提供了进入Rechate的进化起源和脑囊泡和脊椎动物之间的功能性同源性的洞察力。 (c)2019 Elsevier B.v.保留所有权利。

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