一个阿佐替代oline-malononitrile酶可激活聚合诱导的排放纳米探针用于缺氧成像
Zhirong Zhu1, Shichang Liu1, Xupeng Wu1
1School of Chemistry and Molecular Engineering Shanghai Key Laboratory of Functional Materials Chemistry Key Laboratory for Advanced Materials and Institute of Fine Chemicals Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry East China University of Science and Technology Shanghai China.
Smart molecules : open access
|July 17, 2025
概括
研究人员开发了一种新的减少酶激活探头,用于成像低氧环境. 这个探针,Azo-quinoline-malononitrile (QM) -PN,在减少酶存在时产生信号,使瘤和动脉样硬化的检测成为可能.
科学领域:
- 生物医学工程 生物医学工程
- 化学生物学 化学生物学
- 分子成像学分子成像学
背景情况:
- 聚合诱导排放 (AIE) 探针对于疾病诊断至关重要,但生物聚合会导致错误信号.
- 目前的AIE探测器旨在测定水溶性,以防止聚合,这在复杂的生物环境中可能是有问题的.
研究的目的:
- 开发一种新的减少酶激活的AIE探针,用于准确的低氧环境成像.
- 通过防止虚假信号从不必要的聚合来克服现有的AIE探针的局限性.
主要方法:
- 在AIE光原体 (AIEgen) 中引入一个基,以创建Azo-quinoline-malononitrile (QM) -PN探针.
- 利用探测器对减少酶的反应通过聚合诱导发射生成信号.
- 将探头封装在DSPE-PEG2000中,形成Azo-QM-PNNP,以增强细胞透和成像.
主要成果:
- 该Azo-QM-PN探针表现出初始光关闭状态由于分子内运动,由减少酶激活.
- 激活的探头聚合并发出强烈的AIE信号,使低氧环境的现场成像成为可能.
- 该Azo-QM-PN NPs成功成像了缺氧瘤细胞,多细胞瘤球体和动脉样硬化斑块组织.
结论:
- 成功开发了一种激酶激活的AIE探头,用于成像低氧环境.
- 该纳米探针在诊断瘤和动脉样硬化的临床应用方面显示出显著的潜力.
- 这项工作为疾病检测中先进的分子成像策略提供了基础.
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