开发和对比评估两种基于酶的安培罗米特生物传感器设计,用于在生物流体中确定氨酸胺转移酶
Daryna Mruga1, Yevhen Vakhovskyi1,2, Veronika Bakhmat1
1Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnoho Str., 03680 Kyiv, Ukraine.
Micromachines
|October 29, 2025
概括
我们开发了两个生物传感器来检测氨酸胺转移酶 (ALT). 烟酸氧化酶 (POx) 生物传感器提供更高的灵敏度,而谷氨酸氧化酶 (GlOx) 生物传感器提供更好的稳定性和更低的成本,用于肝功能测试.
科学领域:
- 生物医学工程 生物医学工程
- 分析化学 分析化学
- 酶动力学 酶动力学
背景情况:
- 氨酸氨基转移酶 (ALT) 是一个关键的肝功能生物标志物.
- 传统的ALT测试是昂贵且劳动密集的.
- 生物传感器为ALT检测提供了一个有希望的,更有效的替代方案.
研究的目的:
- 开发和比较两种用于ALT检测的安培度生物传感器,使用酸盐氧化酶 (POx) 和谷氨酸氧化酶 (GlOx).
- 评估分析性能,并确定ALT生物传感器的最佳生物认知酶配置.
主要方法:
- 在最佳条件下将POx和GlOx酶固定在电极上.
- 强度计检测ALT活动.
- 系统评估分析参数,包括线性范围,检测极限和灵敏度.
主要成果:
- 基于POx的生物传感器显示了更宽的线性范围 (1-500 U/L) 和更高的灵敏度 (0.75 nA/min在100 U/L).
- 基于GLOx的生物传感器具有5-500U/L的线性范围,可比的检测极限 (1U/L),但在复杂的样品中具有更高的稳定性和更低的测试成本.
- POx是针对ALT的特异性,而GlOx可以受到AST的影响,但为AST检测提供了多功能性.
结论:
- 在ALT生物传感器设计中,灵敏度,强度和多功能性之间存在一个权衡.
- POx生物传感器非常适合敏感的ALT测定.
- GlOx生物传感器提供了一个具有成本效益和稳定的替代方案,具有 AST 测量的潜力,指导未来的临床设备开发.
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