通过将其结构化的mRNA与核酶向的嵌合体向其结构化的mRNA,降低内在无序的蛋白α-synuclein水平
Yuquan Tong1,2, Peiyuan Zhang1, Xueyi Yang1,2
1Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458.
概括
研究人员开发了Synucleozid-2.0和Syn-RiboTAC以准α-synuclein (α-synuclein) mRNA用于帕金森病 (PD) 治疗. 在PD模型中,Syn-RiboTAC有效降解α-synuclein mRNA,降低蛋白质水平并挽救基因表达.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 药物发现 药物发现 药物发现
背景情况:
- 阿尔法同核素 (α-synuclein) 是帕金森病 (PD) 的关键药物标,但其无序的性质使直接小分子抑制复杂化.
- 编码SNCA的α-同核素的5'未翻译区域 (UTR) 具有易于向的结构区域.
研究的目的:
- 识别能够结合SNCA5' UTR并抑制α-同核素转化的小分子.
- 开发RNA向降解剂 (RiboTACs) 以提高PD模型中的治疗疗效.
主要方法:
- 对以RNA为重点的化合物库进行对SNCAmRNA 5' UTR进行选.
- 基于已识别的RNA结合剂开发一种向核糖酶的嵌合体 (RiboTAC).
- RNA-seq和蛋白质组学来评估mRNA/蛋白质水平的变化和转录组范围的影响.
- 评估细胞保护作用和基因表达的救援在PD的患者衍生的iPSC模型.
主要成果:
- 鉴定Synucleozid-2.0,一种通过结合SNCA mRNA 5' UTR.来抑制α-synuclein转换的小分子.
- 开发Syn-RiboTAC,它可以选择性地降解SNCAmRNA,导致α-synuclein蛋白水平降低.
- 与Synucleozid-2.0.0相比,Syn-RiboTAC显示了细胞保护作用的五倍增强.
- Syn-RiboTAC挽救了PD患者衍生的多巴胺基神经元中大约50%异常表达的基因的表达.
结论:
- 用小分子和RiboTACs准SNCA的结构化5' UTR是PD治疗的可行策略.
- 通过降解向mRNA,RiboTACs提供了增强的治疗潜力,超过了简单的翻译抑制.
- 这种方法通过向mRNA来扩大蛋白质组的药用性,为治疗PD等复杂疾病提供了新的途径.
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