A novel turn-on near-infrared fluorescent probe for highly sensitive in vitro and in vivo detection of acetylcholinesterase activity
作者:Lei Xing、Pinyi Ma、Fangfang Chen
DOI:10.1016/j.saa.2024.123954
日期:2024.4
pathway of the nervous systems, with its aberrant expression linked to various diseases. In this study, we have developed a novel Turn-On near-infrared fluorescent probe, TQ-AChE, for the sensitive and selective detection of AChE activity. Characterized by its near-infrared emission at 740 nm, TQ-AChE effectively overcomes the limitations of traditional fluorescent probes, such as short excitation wavelengths
乙酰胆碱酯酶(AChE)是神经系统胆碱能通路中的关键酶,其异常表达与多种疾病有关。在这项研究中,我们开发了一种新型的开启式近红外荧光探针 TQ-AChE,用于灵敏、选择性地检测 AChE 活性。 TQ-AChE 具有 740 nm 近红外发射的特点,有效克服了传统荧光探针的局限性,例如激发波长短和组织穿透性有限,这对于体外和体内应用至关重要。该探针的 AChE 检测限 (LOD) 为 0.02 U/mL,因此具有很高的灵敏度,能够有效快速定量血清中的 AChE 活性。细胞成像研究表明,与肝癌细胞相比,TQ-AChE 可以证实正常肝细胞中的 AChE 活性表达更高。 TQ-AChE还可以有效监测APAP急性发作时AChE的波动,有利于肝脏解毒剂疗效的评估。此外,小鼠模型的体内研究验证了该探针实时监测肝损伤中 AChE 表达的潜力。 TQ-AChE 可视化 AChE 表达的能力标志着其作为早期