A novel TICT-based near-infrared fluorescent probe for light-up sensing and imaging of human serum albumin in real samples
作者:Yufan Fan、Fangyuan Wang、Fanbin Hou、Lai Wei、Guanghao Zhu、Dongfang Zhao、Qing Hu、Tao Lei、Ling Yang、Ping Wang、Guangbo Ge
DOI:10.1016/j.cclet.2022.05.071
日期:2023.2
HSA in living renal cells, while this dye exhibits good cell permeability and high resolution for in-situ imaging in living cells. Collectively, a novel TICT-based near-infrared fluorescent probe was devised for highly selective and ultra-sensitive sensing of HSA in plasma samples or imaging HSA in living cells, which offered a practical tool for clinical tests and for exploring HSA-associated biological
人血清白蛋白 (HSA) 已成为各种人类疾病的关键生物标志物和预后指标。血浆或其他生物系统中 HSA 的实时传感和视觉跟踪将极大地促进基础研究人员和临床医生更好地了解 HSA 相关的生物过程。在此,基于扭曲分子内电荷转移 (TICT) 原理,合理构建了一种新型近红外 (NIR) 荧光探针 ( 7-HTCF ),用于实际样品中 HSA 的发光传感和原位成像。在生理条件下,7-HTCF可以有效地被 HSA 捕获以形成稳定的复合物结合在非药物结合位点,而复合物在 670 nm 左右发出强荧光信号。进一步的研究表明,7-HTCF具有出色的选择性和良好的化学稳定性,以及快速的荧光响应和超高的 HSA 检测灵敏度。特别是,新开发的发光探针已成功用于稀释血浆样品中HSA的定量检测,而其读数几乎不受添加治疗剂和草药的影响。7-HTCF还成功地用于活肾细胞中重吸收 HSA的原位成像,同时该染料具有良好的细胞