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    • 5. 发明申请
    • GLYCINE RIBOSWITCHES, METHODS FOR THEIR USE, AND COMPOSITIONS FOR USE WITH GLYCINE RIBOSWITCHES
    • 甘氨酸核糖开关,用于其的方法以及与甘氨酸核糖开关一起使用的组合物
    • WO2006042143A2
    • 2006-04-20
    • PCT/US2005/036218
    • 2005-10-07
    • YALE UNIVERSITYBREAKER, Ronald, R.BARRICK, JeffreyMANDAL, Maumita
    • BREAKER, Ronald, R.BARRICK, JeffreyMANDAL, Maumita
    • A61K48/00
    • C12N15/85C12N15/115C12N15/67C12N2310/16C12N2310/3519C12N2840/002C12N2840/102C12N2840/55
    • It has been discovered that certain natural mRNAs serve as metabolite-sensitive genetic switches wherein the RNA directly binds a small organic molecule. This binding process changes the conformation of the mRNA, which causes a change in gene expression by a variety of different mechanisms. Modified versions of these natural "riboswitches" (created by using various nucleic acid engineering strategies) can be employed as designer genetic switches that are controlled by specific effector compounds. Such effector compounds that activate a riboswitch are referred to herein as trigger molecules. The natural switches are targets for antibiotics and other small molecule therapies. In addition, the architecture of riboswitches allows actual pieces of the natural switches to be used to construct new non-immunogenic genetic control elements, for example the aptamer (molecular recognition) domain can be swapped with other non-natural aptamers (or otherwise modified) such that the new recognition domain causes genetic modulation with user-defined effector compounds. The changed switches become part of a therapy regimen-turning on, or off, or regulating protein synthesis. Newly constructed genetic regulation networks can be applied in such areas as living biosensors, metabolic engineering of organisms, and in advanced forms of gene therapy treatments.
    • 已经发现某些天然mRNA用作代谢物敏感性遗传开关,其中RNA直接结合小有机分子。 该结合过程改变了mRNA的构象,其通过各种不同的机制引起基因表达的改变。 这些天然“核糖开关”的修饰版本 (通过使用各种核酸工程策略创建)可以用作受特定效应物化合物控制的设计者遗传开关。 这种激活核糖开关的效应物化合物在本文中被称为触发分子。 天然开关是抗生素和其他小分子疗法的靶标。 另外,核糖开关的结构允许使用天然开关的实际片段来构建新的非免疫原性遗传控制元件,例如适体(分子识别)结构域可以与其他非天然适体交换(或以其他方式修饰) 使得新的识别域导致用户定义的效应子化合物的遗传调节。 改变的开关成为治疗方案的一部分 - 开启,关闭或调节蛋白质合成。 新构建的基因调控网络可应用于生物传感器,生物体代谢工程以及基因治疗等高级形式领域。