Crystal structure of a covalently linked Aurora-A-MYCN complex.

IF 2.6 4区 生物学 Q2 BIOCHEMICAL RESEARCH METHODS
Mathias Diebold, Lars Schönemann, Martin Eilers, Christoph Sotriffer, Hermann Schindelin
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Abstract

Formation of the Aurora-A-MYCN complex increases levels of the oncogenic transcription factor MYCN in neuroblastoma cells by abrogating its degradation through the ubiquitin proteasome system. While some small-molecule inhibitors of Aurora-A were shown to destabilize MYCN, clinical trials have not been satisfactory to date. MYCN itself is considered to be `undruggable' due to its large intrinsically disordered regions. Targeting the Aurora-A-MYCN complex rather than Aurora-A or MYCN alone will open new possibilities for drug development and screening campaigns. To overcome the challenges that a ternary system composed of Aurora-A, MYCN and a small molecule entails, a covalently cross-linked construct of the Aurora-A-MYCN complex was designed, expressed and characterized, thus enabling screening and design campaigns to identify selective binders.

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共价连接的 Aurora-A-MYCN 复合物的晶体结构。
Aurora-A-MYCN 复合物的形成通过抑制泛素蛋白酶体系统对致癌转录因子 MYCN 的降解,从而提高了神经母细胞瘤细胞中 MYCN 的水平。虽然 Aurora-A 的一些小分子抑制剂被证明可以破坏 MYCN 的稳定性,但临床试验至今仍不尽如人意。MYCN 本身因其巨大的内在无序区而被认为是 "不可药用 "的。以 Aurora-A-MYCN 复合物而非 Aurora-A 或 MYCN 本身为靶点,将为药物开发和筛选活动带来新的可能性。为了克服由 Aurora-A、MYCN 和小分子组成的三元系统所带来的挑战,我们设计了 Aurora-A-MYCN 复合物的共价交联构建体,并对其进行了表达和表征,从而使筛选和设计活动能够确定选择性结合剂。
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来源期刊
Acta Crystallographica. Section D, Structural Biology
Acta Crystallographica. Section D, Structural Biology BIOCHEMICAL RESEARCH METHODSBIOCHEMISTRY &-BIOCHEMISTRY & MOLECULAR BIOLOGY
CiteScore
4.50
自引率
13.60%
发文量
216
期刊介绍: Acta Crystallographica Section D welcomes the submission of articles covering any aspect of structural biology, with a particular emphasis on the structures of biological macromolecules or the methods used to determine them. Reports on new structures of biological importance may address the smallest macromolecules to the largest complex molecular machines. These structures may have been determined using any structural biology technique including crystallography, NMR, cryoEM and/or other techniques. The key criterion is that such articles must present significant new insights into biological, chemical or medical sciences. The inclusion of complementary data that support the conclusions drawn from the structural studies (such as binding studies, mass spectrometry, enzyme assays, or analysis of mutants or other modified forms of biological macromolecule) is encouraged. Methods articles may include new approaches to any aspect of biological structure determination or structure analysis but will only be accepted where they focus on new methods that are demonstrated to be of general applicability and importance to structural biology. Articles describing particularly difficult problems in structural biology are also welcomed, if the analysis would provide useful insights to others facing similar problems.
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