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非正规核酸:生物仿真三化,纳入mRNA以及对翻译和结构的影响
Patricia Benčić1, Michael Keppler1, Marco Kuge1
1Institute of Pharmaceutical Sciences, University of Freiburg, Germany.
The FEBS journal
|June 17, 2023
概括
研究人员开发了一种酶级联,用于创建修饰的核三酸盐,使功能信使RNA (mRNA) 产生与各种核类型的治疗应用.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 在RNA治疗方面,RNA疗法.
背景情况:
- 传递 RNA (mRNA) 疗法需要有效的方法来结合改性核酸.
- 现有的制备核三酸盐的方法是有限的,特别是对于具有不稳定化学组的类似物.
研究的目的:
- 开发一种多用途的酶系统,从核酸相似物中合成广泛的核酸三酸盐 (NTP).
- 建立生产和验证含有这些修饰核酸的功能mRNA的工作流程.
- 为了研究核类比体的纳入对mRNA特性和功能的影响.
主要方法:
- 采用了一种多功能酶级联,用于三化各种核糖类相似物,包括未受保护的.
- 采用毛细管电泳与质谱学 (CE-MS) 结合用于合成NTP的特征.
- 开发了一个mRNA转录,净化和对模拟结合的质谱验证的工作流.
- 通过重新编码试验和循环二元化 (CD) 光谱学评估了mRNA的翻译忠实性和RNA二次结构.
主要成果:
- 通过酶级联成功合成了核酸三酸盐用于腺,丁,瓜诺,尿和非正规核基.
- 建立了一个有效的过程,以生产含有这些核类相似物的功能性mRNA.
- 证明了核糖类模拟体的纳入对mRNA特性,包括翻译重编码的影响分析的能力.
- 表明7-deazaadenosine的结合会破坏SARS-CoV-2mRNA伪结结构的稳定,影响重编码效率.
结论:
- 开发的酶级联和工作流程使得各种核糖类类似物能够高效地合成和纳入mRNA.
- 这种方法方便研究改性核酸如何影响mRNA结构,功能和治疗潜力.
- 这些发现提供了对RNA结构动态及其与药理活性关系的见解.
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