法医学杂志 ›› 2025, Vol. 41 ›› Issue (4): 355-363.DOI: 10.12116/j.issn.1004-5619.2025.350410

• 论著快检技术赋能法医毒物学多场景应用专题 • 上一篇    下一篇

基于铜纳米酶和分子印迹技术的替来他明快速检测荧光探针开发

李嘉豪(), 凌江, 蔡子豪, 郑梓源, 丁艳君()   

  1. 中南大学湘雅基础医学院法医学系,湖南 长沙 410013
  • 收稿日期:2025-04-25 发布日期:2025-11-25 出版日期:2025-08-25
  • 通讯作者: 丁艳君
  • 作者简介:李嘉豪(1998—),男,硕士研究生,主要从事法医毒物分析研究;E-mail:905606717@qq.com
  • 基金资助:
    上海市法医学重点实验室暨司法部司法鉴定重点实验室开放课题资助项目(KF202305);国家卫生健康委员会毒品依赖和戒治重点实验室(昆明医科大学)开放课题资助项目(KZ202401)

Fluorescent Probe Development for Rapid Detection of Tiletamine Based on Copper Nanozyme and Molecular Imprinting Technology

Jia-hao LI(), Jiang LING, Zi-hao CAI, Zi-yuan ZHENG, Yan-jun DING()   

  1. Department of Forensic Medicine, Xiangya School of Basic Medical Sciences, Central South University, Changsha 410013, China
  • Received:2025-04-25 Online:2025-11-25 Published:2025-08-25
  • Contact: Yan-jun DING

摘要:

目的 开发一种针对替来他明的快速检测方法,在保证灵敏度和准确性的前提下做到操作简便、成本低廉,帮助现场快速筛查和禁毒工作的开展。 方法 本研究结合双配体铜纳米酶与分子印迹技术,先以易获取的原材料在120 ℃条件下合成铜纳米酶,再在常温条件下通过溶胶-凝胶法在表面刻印特异性空腔,构建一种新型荧光传感探针。对该探针进行表征和方法学验证,并将其应用于实际样本的检测。 结果 所构建探针荧光性质稳定,抗干扰能力强,具有良好的选择性和灵敏度,检出限为5 ng/mL,定量浓度范围为15~500 ng/mL,可实现血液、电子烟油等实际样本中替来他明的快速检测。 结论 该荧光探针可用于多种检材中替来他明的快速检测与现场初筛,极大提高了检测效率且显著降低了分析成本,具有较高的研究价值和广阔的应用前景。

关键词: 法医学, 毒物分析, 替来他明, 铜纳米酶, 分子印迹聚合物, 荧光探针, 快速检测

Abstract:

Objective To develop a rapid detection method for tiletamine that is easy to operate and low-cost under the premise of ensuring sensitivity and accuracy, to assist in carrying out rapid screening and drug control work on-site. Methods This study integrates dual-ligand copper nanozymes with molecular imprinting technology. Initially, copper nanozymes were synthesized using readily available raw materials at 120 ℃. Subsequently, specific cavities were imprinted on their surface at room temperature using a sol-gel method to construct a novel fluorescent sensing probe. This probe was characterized and methodologically validated, and then applied to the detection of actual samples. Results The developed probe exhibited stable fluorescence properties, strong anti-interference capability, and excellent specificity and sensitivity, with a detection limit of 5 ng/mL and a quantitative concentration range from 15 to 500 ng/mL. It enabled the rapid detection of tiletamine in real samples such as blood and e-cigarette oil. Conclusion This fluorescent probe can be used for rapid detection and on-site preliminary screening of tiletamine in various types of samples. It significantly improves the detection efficiency and reduces analysis costs, showing high research value and broad application prospects.

Key words: forensic medicine, toxicological analysis, tiletamine, copper nanozyme, molecular imprinted polymer, fluorescent probe, rapid detection

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