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一对DNA的aptamers可以选择性地结合到比利鲁宾和比利弗丁

Yachen Xie¹, Yunus A Kaiyum², Lide Gu¹

¹Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.

ACS chemical biology

|July 16, 2025

概括

研究人员为胆红素和胆素,主要的血红素代谢产物开发了DNA吸收剂. 这些体对诊断肝脏疾病和创建基因调节分子开关充满希望.

科学领域:

生物化学生物化学
分子生物学分子生物学
生物技术是生物技术.

背景情况:

比利鲁和比利弗丁是血分解的关键产物.
它们的准确测量对于诊断新生儿黄和肝功能障碍等疾病至关重要.
亚胺为精确的分子检测和控制提供了潜力.

研究的目的:

为了选择和表征针对胆红素和胆红素的DNA吸收体.
探索它们在开发生物传感器和分子开关中的实用性.
了解血红素分解产物的分子识别.

主要方法:

通过指数式丰富 (SELEX) 进行体选择的联体的系统演化.
异热定位热度计 (ITC) 用于确定阿普坦 - 分析物结合亲和力 (Kd).
光链移位测试用于敏感检测和检测极限 (LOD) 确定.

主要成果:

对于白素 (Kd = 6 nM) 和白素 (Kd = 203 nM),选择了高亲和度 DNA 体.
一个基于 Biliverdin Aptamer 的传感器实现了低检测极限 (0.7 nM) 并与 bilirubin 交叉反应.
在选择过程中观察到并证实了比利鲁氧化为比利弗丁.
一个基于胆红素体的传感器实现了47nM的检测极限.

结论:

开发的DNA体提供了对胆红素和胆红素的特定分子识别.
这些体是开发对血代谢物敏感生物传感器的宝贵工具.
这些发现支持这些体在创造基因调节的细胞内分子开关方面的潜在应用.

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