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自组装的球形核酸的光化学稳定

Sepideh Kaviani¹, Haochen Bai¹, Trishalina Das¹

¹Department of Chemistry, McGill University, 801, Sherbrooke St. West, Montreal, QC, H3A 0B8, Canada.

Small (Weinheim an der Bergstrasse, Germany)

|January 10, 2025

概括

研究人员使用紫外线交联增强了球形核酸 (SNA) 的稳定性. 这提高了它们的细胞吸收和基因沉默能力,为先进的核酸疗法铺平了道路.

科学领域:

生物技术是生物技术.
纳米医学是一种纳米医学.
分子生物学分子生物学

背景情况:

氧核酸治疗药物面临着降解和细胞吸收不良等挑战.
球形核酸 (SNA) 是核酸输送的有希望的,但在生物条件下可能不稳定.
两性DNA的非共价自我组装可以导致与血清蛋白相互作用时的脆弱性.

研究的目的:

开发用于共交联自组装SNA的方法,以提高其稳定性.
为了研究交叉链接对SNA对血清蛋白的抵抗和细胞吸收的影响.
评估交叉链接对SNAs治疗释放和基因沉默活性的影响.

主要方法:

序列定义的DNA双胞胎被合成并自组装成SNA.
采用了两种UV诱导的共价交联策略:乙胺光二分化和二硫化交联.
评估了SNA稳定性与人类血清白蛋白 (HSA) 的结合.
细胞吸收和基因沉默功效在体外进行了评估.

主要成果:

紫外线交叉连接显著增强了SNA对HSA的稳定性.
与非交叉连接的对应物相比,二硫化物交叉连接的SNAs显示了细胞吸收的改善.
交叉连接保持了治疗性核酸的可访问性和持续的活动.
增强的稳定性导致了无助基因沉默效率的提高.

结论:

紫外线诱导的共价交联是一种稳定SNAs的有效策略.
稳定的SNAs表现出改善的细胞传递和增强的基因沉默.
这些发现支持交联SNAs在临床前和体内治疗应用中的潜力.

关键词:

交叉连接交叉连接送货送货送货送货送货送货硫化二氧化物是什么?基因沉默是对基因进行沉默的方法.氧核酸类的部分.自动组装的自动组装机球形核酸是球形核酸中的一种.

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