Molecular cloning, expression, and characterization of rat homolog of human AP-2alpha that stimulates neuropeptide Y transcription activity in response to nerve growth factor.

Molecular cloning, expression, and characterization of rat homolog of human AP-2alpha that stimulates neuropeptide Y transcription activity in response to nerve growth factor.
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人 AP-2α 的大鼠同源物的分子克隆、表达和表征,该同源物可刺激神经肽 Y 转录活性以响应神经生长因子。

DOI:
10.1210/mend.14.6.0468
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发表时间:
2000
影响因子:
--
通讯作者:
Lei Zhang
Lei Zhang
中科院分区:
医学2区
文献类型:
--
作者:
Bing‐sheng Li;P. Kramer;Weiqin Zhao;Wu Ma;D. Stenger;Lei Zhang

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神经肽Y(neuropeptide Y,NPY)在神经元活动、内分泌和性行为以及食物摄取的中枢调节中起重要作用。虽然在PC 12细胞中的NPY基因的转录活性是由许多代理,如神经生长因子(NGF)的调节,负责的神经生长因子引起的增加的NPY基因的转录的机制仍有待探讨。在这项研究中,我们分离和鉴定了一种核蛋白,该蛋白与位于大鼠NPY启动子基因的核苷酸-87和-33之间的NGF反应元件(NGFRE)结合。这种核蛋白与人类转录因子AP-2 α的大鼠同源物相同。我们进一步证明,大鼠AP-2a促进响应于NGF的有效NPY转录活性。最后,我们提供了直接的证据表明,与野生型小鼠相比,缺乏转录因子AP-2 α的小鼠表现出降低的NPY mRNA表达,进一步支持AP-2 α是调节NPY转录活性的重要转录因子的假设。
Neuropeptide Y (NPY) plays an important role in the central regulation of neuronal activity, endocrine and sexual behavior, and food intake. Although transcription activity of the NPY gene in PC12 cells is regulated by a number of agents such as nerve growth factor (NGF), the mechanism responsible for the NGF-elicited increase in the transcription of the NPY gene remains to be explored. In this study, we isolated and characterized a nuclear protein that is bound to NGF-response elements (NGFRE) that lie between nucleotide -87 and -33 of the rat NPY promoter gene. This nuclear protein is identical to the rat homolog of human transcription factor AP-2alpha. We further demonstrated that rat AP-2a promotes efficient NPY transcription activity in response to NGF. Finally, we provide direct evidence that the mice lacking transcription factor AP-2alpha exhibit reduced expression of NPY mRNA compared with wild-type mice, further supporting the hypothesis that AP-2alpha is an important transcription factor in regulating NPY transcription activity.
神经生长因子对人类神经肽 Y 基因的转录调节。
DOI: --
发表时间: 1994
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DOI: --
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DOI: 10.1016/s0165-3806(99)00164-9
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