H2O2是体内重要的信号分子,它的水平在许多病理部位波动,因此,它可以用作疾病早期诊断的生物标志物。由于体内环境极其复杂,开发一种能够准确监测H2O2水平波动而不受其他生理过程干扰的探针具有重要意义。基于此,我们设计并合成了两种新的近红外H2O2荧光探针,LTA和LTQ,基于ICT机制。两者都对H2O2有较好的反响,但LTA有较快的反响速度。此外,该探针LTA具有良好的生物相容性,良好的水溶性,和大的斯托克斯位移(95nm)。检测限为4.525μM。该探针成功地用于视觉检测活细胞和斑马鱼中的H2O2,并成功地用于监测由于APAP引起的肝损伤引起的斑马鱼中H2O2水平的变化。
H2O2 is an important signaling molecule in the body, and its levels fluctuate in many pathological sites, therefore, it can be used as a biomarker for early diagnosis of disease. Since the environment in vivo is extremely complex, it is of great significance to develop a probe that can accurately monitor the fluctuation of H2O2 level without interference from other physiological processes. Based on this, we designed and synthesized two new near-infrared H2O2 fluorescent probes, LTA and LTQ, based on the ICT mechanism. Both of them have good responses to H2O2, but LTA has a faster response speed. In addition, the probe LTA has good biocompatibility, good water solubility, and a large Stokes shift (95 nm). The detection limit is 4.525 μM. The probe was successfully used to visually detect H2O2 in living cells and zebrafish and was successfully used to monitor the changes in H2O2 levels in zebrafish due to APAP-induced liver injury.