PET 1 ETS FACTOR IN THE MAMMALIAN 5 HT SYSTEM

描述（来自申请人摘要）：本申请提出了一种独特的 研究的途径，旨在发展和功能的哺乳动物 血清素神经递质系统这项研究是基于我们发现的一种 一种新的ETS结构域转录因子，Pet-1，其表达精确地标记了 5-HT神经元在5-HT出现之前出现在后脑， 开始迁移到它们的成年中脑/后脑位置。的发现 在哺乳动物5-HT中特异性表达的转录因子 系统是前所未有的。它将能特异性表达模式与 人类和小鼠基因中存在Pet-1 DNA结合位点，这 在很大程度上定义了5-HI神经元的分化表型，表明 Pet-1是决定成为5-HT神经元的关键决定因素。的 在本申请中描述的实验旨在检验该假设 并利用Pet-1的刺激性表达模式来控制 异源基因表达的方法。拟议 目的是：1）研究Pet-1替代形式的表达和表达 5-HT系统中的其他ETS因子。2)鉴定宠物基因组DNA片段 能够控制能特异性的基因表达。3)探讨 Pet-1与5-羟色胺转运蛋白的转录相互作用 （5-HTT）、5-HT 1a受体和色氨酸羟化酶（TPH）基因。4)创建一个 Pet-1功能丧失小鼠并确定其表型。的功能 中枢5-HT系统在许多精神疾病中是异常的，因此， 系统是几种高效药理学试剂的靶点， 用于治疗这些疾病。从完成的信息 拟议的目标可能会对我们的基本目标产生重大影响。 5-HT系统的理解，并可能导致在未来的创造 涉及5-HT系统的精神疾病的新动物模型。

DESCRIPTION (From applicant's abstract): This application proposes a unique avenue of research aimed at the development and function of the mammalian serotonin neurotransmitter system. The research is based on our discovery of a novel ETS domain transcription factor, Pet-1, whose expression precisely marks 5-HT neurons before 5-HT appears in the hindbrain and before 5-HT neurons have begun to migrate to their adult midbrain/hindbrain positions. The discovery of a transcription fact that is specifically expressed in the mammalian 5-HT system is unprecedented. It serotonergic-specific expression pattern together with the presence of a Pet-1 DNA binding sites in human and mouse genes, which in large part defines the differentiated phenotype of 5-HI neurons, suggest that Pet-1 is a key determinant in the decision to become a 5-HT neuron. The experiments described in this application are aimed at testing this hypothesis and to exploit the provocative expression pattern of Pet-1 to control heterologous gene expression in a serotonergic-specific manner. The proposed aims are: 1) Investigate expression of Pet-1 alternative forms and expression of other ETS factors in the 5-HT system. 2) Identify a Pet genomic DNA fragment capable of controlling serotonergic-specific gene expression. 3) Investigate the transcriptional interaction of Pet-1 with the serotonin transporter (5-HTT), 5 HT1a receptor and tryptophan hydroxlase (TPH) genes. 4) Create a Pet-1 loss of function mouse and determine its phenotype. The function of the central 5-HT system is abnormal in numerous psychiatric disorders and thus this system is the target of several highly effective pharmacological agents that are used to treat these disorders. The information gained from completion of the proposed aims is likely to have significant impact on our basic understanding of the 5-HT system and may lead in the future to the creation of novel animal models for psychiatric disorders involving the 5-HT system.