集成的化和实验选识别了新配体,这些配体在Dicer裂变部位准前体microRNA-31
Grace Arhin1, Lily Haghpassand2, Sarah C Keane1,2
1Biophysics Program, University of Michigan.
bioRxiv : the preprint server for biology
|July 16, 2025
概括
研究人员确定了与microRNA-31前体结合的小分子,可能抑制与癌症相关的miR-31成熟. 这种虚拟查方法为开发RNA向癌症疗法提供了新的策略.
科学领域:
- 分子生物学分子生物学
- 生物化学 生物化学
- 药物发现 药物发现 药物发现
背景情况:
- 微RNAs (miRNAs) 调节基因表达,它们的失调与包括癌症在内的各种疾病有关.
- 变化的microRNA-31 (miR-31) 含量与几种类型的癌症特别相关.
- 用小分子准miR-31的前体结构 (pre-miR-31) 是调节miR-31成熟的战略.
研究的目的:
- 通过虚拟查方法探索前-miR-31结构的可药性.
- 为了确定可以与前-miR-31结合的小分子.
- 为了研究这些分子抑制miR-31成熟的潜力.
主要方法:
- 结构引导的虚拟选与miR-31前的碎片库对比.
- 顶级虚拟查候选人的实验性表征.
- 异核单量子连贯性 (HSQC) NMR光谱学用于分析RNA-连接体复合体.
- 化学结构相似性搜索以确定额外的结合剂.
主要成果:
- 已经确定了与前-miR-31结合的几个化合物.
- 发现三种化合物与前-miR-31的Dicer裂变部位结合.
- 通过相似性搜索确定了具有同等或增强结合亲和力的额外结合剂.
结论:
- 这项研究展示了一种可通用的虚拟选方法,用于从大型化学数据库中识别RNA结合配体.
- 这些已识别的化合物通过向Dicer裂变部位,显示出抑制miR-31成熟的潜力.
- 这些发现为开发与miR-31失调相关的癌症的新型RNA向治疗提供了基础.
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