使用多孔双层干扰仪进行生物感知:反射干扰仪,富里埃变换光谱仪
Claudia Pacholski1, Marta Sartor, Michael J Sailor
1Department of Chemistry and Biochemistry, The University of California, San Diego, 9500 Gillman Drive, La Jolla, California 92093-0358, USA.
Journal of the American Chemical Society
|August 18, 2005
概括
这项研究引入了基于芯片的干扰仪,用于基于大小的生物分子分离. 它可以有效地检测像牛血清白蛋白 (BSA) 这样的蛋白质,即使其他分子度高.
科学领域:
- 纳米技术纳米技术
- 生物物理学的生物物理.
- 分析化学 分析化学
背景情况:
- 干涉度生物传感器提供了敏感的检测方法.
- 芯片上的参考通道对于准确的测量至关重要.
- 根据大小分离生物分子对于复杂的样本分析至关重要.
研究的目的:
- 开发基于芯片的双光束干扰仪,用于基于大小的生物分子分离.
- 创建一个生物传感器,能够弥补矩阵组成变化.
- 用多孔层来证明生物分子的选择性检测.
主要方法:
- 使用双层多孔结构用于芯片上的参考和样本通道.
- 使用干扰建模和快速里埃转换 (FFT) 分析了反射频谱.
- 研究了小 (糖) 和大 (牛血清白蛋白 - BSA) 分子透到不同孔径的大小的分子.
主要成果:
- 干扰仪成功地根据大小分离了生物分子,BSA只进入更大的孔隙.
- 通过FFT峰值的移动检测到生物分子透到多孔层.
- 在百倍过多的糖糖中精确检测到BSA,证明了矩阵补偿.
结论:
- 开发的干扰度生物传感器为基于大小的生物分子分离和检测提供了一个强大的平台.
- 基于芯片的设计,堆叠的参考和样本通道简化了干扰测量测量.
- 对反射频谱的FFT分析能够在复杂的混合物中敏感和选择性地检测目标生物分子.
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