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在DNA微阵列合成中的非水性氧化改善了寡核酸质量,并保持了黄金和氧化基质的表面完整性

Erika Schaudy¹, Gisela Ibañez-Redín¹, Etkin Parlar¹

¹Institute of Inorganic Chemistry, University of Vienna, Josef-Holaubek-Platz 2, Vienna 1090, Austria.

Analytical chemistry

|January 29, 2024

概括

坎佛硫尼尔氧化 (CSO) 提供了一种更温和的非水性方法,用于在导电表面合成DNA. 这种方法保留了敏感的涂层,使高质量的DNA微阵列能够用于先进的传感应用.

科学领域:

生物技术是生物技术.
材料科学材料科学材料科学
表面化学表面化学

背景情况:

导电表面上的核酸对于生物传感,分析物检测和成像至关重要.
使用/水损伤导电涂层的标准DNA合成方法,限制了应用.
在导电基板上开发强大的DNA合成对于先进的诊断至关重要.

研究的目的:

研究坎佛硫尼尔氧化 (CSO) 作为在导电表面进行DNA合成的非水性替代品.
评估CSO在局部DNA微阵列制造过程中保持导电层的有效性.
用CSO合成的DNA微阵列的质量与传统方法进行比较.

主要方法:

研究了camphorsulfonyl oxaziridine (CSO) 作为一种氧化剂,用于DNA合成中的光胺合物.
在各种基质上进行了现场DNA合成,包括玻璃,黄金和氧化物 (ITO) 涂层的幻灯片.
在合成后评估杂交信号和导电层的完整性.

主要成果:

在玻璃幻灯片上产生高混合信号时,CSO表现出与/水相当的性能.
CSO有效地保护了黄金和ITO基板上的导电层.
使用CSO在导电基板上合成的DNA微阵列的质量接近常规玻璃幻灯片的质量.

结论:

坎佛硫尼尔氧化 (CSO) 是一种可行的,非水性替代品,用于在导电表面上合成DNA.
CSO 能够在导电材料上制造高质量的 DNA 微阵列,而不会损害基质的完整性.
这种方法扩大了导电平台的实用性,用于先进的生物传感和成像应用.

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DNA Microarrays

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Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...