一个基于液晶的传感器,利用水性/液晶接口上的阿普他默介导识别来敏感检测血清
1Department of Chemistry, Gachon University, Seongnam-si, Gyeonggi-do, Republic of Korea.
Biotechnology and applied biochemistry
|July 21, 2023
概括
一个新的液晶 (LC) 传感器使用aptamer识别检测血清 (5-HT). 这种生物传感器提供了一种敏感且具有成本效益的方法,用于在生物样本中检测5-HT.
科学领域:
- 生物分子传感感应
- 材料科学是一种材料科学.
- 分析化学是一种分析化学.
背景情况:
- 血清素 (5-HT) 是一种关键的神经递质,涉及各种生理过程.
- 精确检测5-HT对于诊断和监测神经和精神疾病至关重要.
- 现有的检测方法通常需要复杂的仪器或广泛的样品准备.
研究的目的:
- 开发一种基于液晶 (LC) 的新型生物传感器,用于敏感和选择性色胺 (5-HT) 检测.
- 在信号传导的接口上利用LC的方向过渡.
- 建立一个具有成本效益和简单的5-HT量化平台.
主要方法:
- 功能化的水性/LC接口与阴离子表面活性剂 (CTAB) 和5-HT特异性胺.
- 检测策略基于LC定向变化 (同源至倾斜) 诱导的aptamer-表面活性剂相互作用.
- 使用偏振光学显微镜监测LC对齐过渡.
- 通过LC方向的变化量化5-HT.
主要成果:
- 生物传感器显示了5-HT的线性检测范围从1到1000nm.
- 在缓冲溶液中实现了1.68nM的低检测极限.
- 传感器在人类尿样中成功检测到5-HT,检测极限为2.25nM.
- 该LC传感器表现出高灵敏度,选择性和成本效益.
结论:
- 开发的基于液晶的传感器为5-HT检测提供了一个灵敏,简单和具有成本效益的平台.
- 传感器的机制依赖于针对特定目标的aptamer相互作用,在功能化接口上调节LC定向.
- 这种方法对治疗点诊断和对生物流体中5-HT水平的监测具有前景.
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