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白细胞介素-1刺激β-淀粉样前体蛋白启动子。

Interleukin-1 stimulates the beta-amyloid precursor protein promoter.

作者信息

Donnelly R J, Friedhoff A J, Beer B, Blume A J, Vitek M P

机构信息

Millhauser Laboratories, Department of Psychiatry, NYU Medical Center, New York 10016.

出版信息

Cell Mol Neurobiol. 1990 Dec;10(4):485-95. doi: 10.1007/BF00712843.

Abstract
  1. Amyloid plaques found in the brains of Alzheimer's diseased patients are composed of the 42 amino acid beta-amyloid peptide (BAP) which is processed out of the larger amyloid precursor protein (APP). 2. To study the regulation of the APP gene expression, we have isolated the promoter region of this angle of this single-copy gene and produced a reporter gene system to determine if the promoter is responsive to agents that may cause the overproduction of APP leading to the abnormal accumulation of plaques in AD. 3. The promoter contains sequences homologous to heat shock elements, AP-1 binding sites, and phorbol ester-inducible sequences as well as GG-rich regions found in other constitutively expressed genes. 4. We show here that this promoter is inducible in cultured cells by interleukin-1 (IL-1) in a transient assay system and that the HSE and AP-1 binding site are required for this inducibility. 5. This induction of transcription from the APP promoter implies that this gene is responsive to tropic and/or trophic agents which may be present in the diseased brain.
摘要
  1. 在阿尔茨海默病患者大脑中发现的淀粉样斑块由42个氨基酸的β-淀粉样肽(BAP)组成,该肽是从较大的淀粉样前体蛋白(APP)加工而来的。2. 为了研究APP基因表达的调控,我们分离了这个单拷贝基因的启动子区域,并构建了一个报告基因系统,以确定该启动子是否对可能导致APP过度产生从而导致AD中斑块异常积累的因子有反应。3. 该启动子包含与热休克元件、AP-1结合位点、佛波酯诱导序列同源的序列,以及在其他组成性表达基因中发现的富含GG的区域。4. 我们在此表明,在瞬时检测系统中,该启动子在培养细胞中可被白细胞介素-1(IL-1)诱导,并且HSE和AP-1结合位点是这种诱导所必需的。5. APP启动子的这种转录诱导意味着该基因对患病大脑中可能存在的促生长和/或营养因子有反应。

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