功能化核酸N3Methyluridine和2'-O-Alkyl/2'-Fluoro-N3Methyluridine可以提高核酶抵抗力,同时保持双重几何
Avijit Sahoo1, Gourav Das1, Atanu Ghosh2
1Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal 721302, India.
Bioorganic & medicinal chemistry
|January 31, 2024
概括
改性尿素核酸 (2'-O-基/2'-F-m3U) 增强了对核酶的寡核酸稳定性. 这些修改表明,通过增加稳定性和类似药物的特性,有望改善反感性/siRNA疗法.
科学领域:
- 核酸化学的核酸化学
- 药品化学 药品化学 是一个
- 生物技术是生物技术.
背景情况:
- 反感和siRNA疗法依赖于寡核酸的稳定性和有效性.
- 核酶降解限制了治疗性寡核酸的体内性能.
- 研究了尿素的2eal位置的修改,以增强寡核酸的特性.
研究的目的:
- 为了合成2eal-O-alkyl/2eal-fluoro-N3-methyluridine (2eal-O-alkyl/2eal-F-m3U) 胺酸盐.
- 将这些改性核酸纳入DNA和RNA寡核酸.
- 评估这些修改对双重稳定性,核酶耐药性和潜在的治疗应用的影响.
主要方法:
- 改性胺酸盐的化学合成.
- 氧核酸的合成和净化.
- 热变性化 (Tm) 研究双重结合亲和力.
- 基于歧视的测试.
- 血清稳定性测试使用3种eal外核酶 (SVPD) 和5种eal外核酶 (PDE-II).
- 分子动力学 (MD) 模拟和分子建模.
主要成果:
- 2eal-O-alkyl/2eal-F-m3U修改降低了双重热稳定性和基配对的区别.
- 与其他改性类似物相比,具有2eal-O-alkyl-m3U的寡核酸体表现出优越的核酶耐药性.
- MD模拟显示m3U和2eal-O-methyl-m3U破坏了沃森-克里克相互作用,减少了双重稳定性.
- 分子建模表明2eal-O-propyl-m3U在外核酶活性位点中的固体阻碍,增强稳定性.
结论:
- 2 eal-modified-m3U核酸提供了增强的核酶抗性.
- 这些修改可以改善寡核酸治疗药物的稳定性和类似药物的特性.
- 2 eal-modified-m3U核酸对开发先进的反感/siRNA基疗法具有前景.
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