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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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生物相容的TADF探针用于高度多重化的光终身成像.

Pilar Suárez de Cepeda1,2,3, Ferran Nadal-Bufi1,2, Janine Haug4,5,6

  • 1Centre for Inflammation Research, The University of Edinburgh, Edinburgh, EH16 4UU, UK.

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概括

新的热激活延迟光 (TADF) 纳米探针为多重成像提供了长,多样化的光寿命. 这使得使用光终身成像显微镜 (FLIM) 能够在单个光谱窗口中同时对五个探针进行成像.

关键词:
细菌 细菌是一种细菌.光终身成像显微镜 (FLIM) 的使用光剂是光剂的组成部分.纳米探测器是一种纳米探测器

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科学领域:

  • 生物物理学的生物物理.
  • 光学成像技术的成像
  • 材料科学 材料科学 材料科学

背景情况:

  • 光终身成像显微镜 (FLIM) 提供敏感的细胞微环境分析.
  • 传统的光剂的寿命有限 (<5 ns),限制了多重成像能力.
  • 对于先进的FLIM应用,需要更长,更多样化的光寿命.

研究的目的:

  • 设计和评估用于复合FLIM的新型热激活延迟光 (TADF) 纳米探针.
  • 开发具有延长和多样化的光寿命的纳米探测器,适合生物成像.
  • 为了证明TADF发射器对于先进的多色FLIM的潜力.

主要方法:

  • 36个生物相容的TADF纳米探针的系统设计和合成.
  • 在水性介质中对纳米探针进行光寿命特征 (高达15 ns) 的评估.
  • 在生理条件下的细菌细胞活细胞成像中使用选定的TADF探针.
  • 利用FLIM相位分析在单个光谱窗口内同时进行多探头成像.

主要成果:

  • 成功合成了36个TADF纳米探针,具有长时间和多样化的光寿命.
  • 使用这些新的纳米探针,证明了细菌细胞的活细胞成像.
  • 在一个光谱窗口中通过FLIM-相位器策略实现了前所未有的5个纳米探测器的同时成像.
  • 验证了用于多重成像的TADF发射器广泛的光寿命范围.

结论:

  • 热激活延迟光 (TADF) 发射器是开发先进FLIM探测器的高效支架.
  • 开发的TADF纳米探针显著扩大了生物研究中多重成像的可能性.
  • 这项工作通过克服传统光体的局限性,释放了FLIM在多色生物研究中的潜力.