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相关概念视频

Labeling DNA Probes03:31

Labeling DNA Probes

DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...

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Synthesis and Calibration of Phosphorescent Nanoprobes for Oxygen Imaging in Biological Systems
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一个基于cyclochalcone的光探针用于检测过氧酸盐.

Li-Hao Liu1, Xian-Zhao Shang1, Jian-Hao Yuan1

  • 1Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology
|June 5, 2024
PubMed
概括

一个新的光探测器,C-PN,通过改变颜色和光来检测过氧酸盐 (ONOO-). 这种探测器为潜在的应用提供了快速,选择性和稳定的ONOO-检测.

关键词:
石灰是一种的材料.光探测器探测器可以发光.过氧化酸盐的过氧酸盐

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科学领域:

  • 分析化学 分析化学
  • 生物化学 生物化学
  • 材料科学 材料科学 材料科学

背景情况:

  • 过氧化 (ONOO-) 是一种反应性物种,涉及各种生理和病理过程.
  • 对ONOO-的敏感和选择性检测方法对于生物和医学研究至关重要.
  • 光探针在灵敏度和实时监测方面具有优势,用于检测反应性物种.

研究的目的:

  • 为了合成和描述一种新型的循环合金光探测器,C-PN.
  • 评价探头用于检测过氧酸盐 (ONOO-) 的性能.
  • 为了研究光变化的机制与ONOO-反应时.

主要方法:

  • 循环基光探测器C-PN的合成.
  • 用光谱分析 (光和UV-Vis) 来研究探头对ONOO-的反应.
  • 评估探头的选择性,稳定性,响应时间和检测极限.

主要成果:

  • 合成的探针C-PN在与ONOO-.反应时表现出明显的颜色变化和光转移.
  • 探测器显示了短响应时间 (<60秒),以及对ONOO-.的良好的选择性和稳定性.
  • 达到了20.2nM的低检测极限,使得ONOO-的敏感检测成为可能.

结论:

  • 新型循环石墨烯光探测器C-PN有效用于裸眼和光检测ONOO-.
  • 探测器的机制涉及循环结构中双键的断开,改变了分子内电荷转移.
  • 在相关的化学和生物环境中,C-PN显示为可靠的ONOO感应工具.