黄金发的能量最小值:基于的可逆聚合和生物感应
Wonjun Yim1, Maurice Retout2, Amanda A Chen2
1Materials Science and Engineering Program, University of California San Diego, La Jolla, California 92093, United States.
ACS applied materials & interfaces
|August 31, 2023
概括
一种新驱动的方法使用金纳米粒子拆解用于蛋白质酶检测. 这种方法克服了矩阵干扰,提供了一个简单而通用的工具,用于检测临床样本中的主要蛋白酶 (Mpro) 等生物标志物.
科学领域:
- 纳米技术 纳米技术
- 生物化学 生物化学
- 分析化学 分析化学
背景情况:
- 使用金纳米粒子 (AuNP) 聚合的色度生物传感器面临着诸如矩阵干扰和生物流体分析中的有限特异性等挑战.
- 现有的方法在临床样本实用性和复杂生物矩阵中可靠检测方面存在困难.
研究的目的:
- 开发一种化物驱动的纳米尺度拆解策略,以克服基于AuNP的色度生物传感器的局限性.
- 创建一个多功能且对矩阵不敏感的平台来检测特定的蛋白质酶,例如SARS-CoV-2的主要蛋白质酶 (Mpro).
主要方法:
- 使用阴离子 (RRK) 组装了酸盐涂层的AuNP,并对聚合物进行了表征.
- 使用解离来触发AuNP聚合物的分解在目标蛋白质酶裂变时.
- 研究了性质 (长度,水友性,电荷,结构) 对解离效率的影响.
主要成果:
- 通过特定的蛋白质分解裂变介导的AuNP聚合物的可逆解离.
- 在唾液中达到12.3nM的Mpro检测极限,显示出快速而明显的光学信号.
- 在不同的矩阵中验证了分离策略,包括唾液,尿液,血和海水,以及使用银纳米粒子.
结论:
- 支持酸的纳米尺度拆解平台提供了一种简单的,对矩阵不敏感的,多功能的蛋白质酶检测方法.
- 这种方法提高了色度生物传感器用于临床诊断和生物流体分析的实用性.
- 该策略可适应检测各种蛋白酶和利用不同的等离子纳米粒子.
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