Biological thiols, including cysteine (Cys), homocysteine (Hcy) and glutathione (GSH), play crucial roles in living organisms, such as maintaining the cellular redox equilibrium, and are closely related to many diseases. The development of efficient fluorescent probes that can diacritically detect biothiols with similar reactivity are of great desirable for the study of biological processes. The conventional
Broadly Applicable Strategy for the Fluorescence Based Detection and Differentiation of Glutathione and Cysteine/Homocysteine: Demonstration in Vitro and in Vivo
作者:Wenqiang Chen、Hongchen Luo、Xingjiang Liu、James W. Foley、Xiangzhi Song
DOI:10.1021/acs.analchem.5b04333
日期:2016.4.5
characteristic intense emission band (B1). In the special case of Cys/Hcy, the NBD-S-Cys/Hcy cleavage product can undergo a further, rapid, intramolecular Smilesrearrangement to form a new, highly fluorescent NBD-N-Cys/Hcy compound (band B2); because of geometrical constraints, the GSH derived NBD-S-GSH derivative cannot undergo a Smilesrearrangement. Thus, the presence of a single B1 or double B1 + B2
A NBD-S-rhodamine dyad for dual-color discriminative imaging of biothiols and Cys/Hcy
作者:Lu Sun、Yaqing Jiang、Changyu Zhang、Xiuru Ji、Dequn Lv、Zhen Xi、Long Yi
DOI:10.1039/c8nj02323a
日期:——
Hcy, GSH and H2S are linked to different diseases, respectively. Although many fluorescentprobes are successfully applied in the detection of these biothiols in living biological samples, probes with high selectivity to discriminatively detect biothiols are underdeveloped. Herein, we designed and synthesized a new dual-color NBD-S-rhodamine fluorescentprobebased on fast thiolysis of NBD thioether,
A simple fluorescent probe with two different fluorescence signals for rapid sequence distinguishing of Cys/Hcy/GSH and intracellular imaging
作者:Yu Zhu Yang、Zi Yi Xu、Lei Han、Yu Zhu Fan、Min Qing、Nian Bing Li、Hong Qun Luo
DOI:10.1016/j.dyepig.2020.108722
日期:2021.1
Based on the 7-nitro-1,2,3-benzoxadiazole (NBD) unit, many fluorescentprobes have been developed for the differential detection of biothiols. Among them, however, the use of fluorescentprobes for rapid simultaneous identification of biothiols in vivo has been rarely reported. In this work, a simple fluorescentprobe (NC-NBD) is rationallydesigned and developed according to the different reactivity
Biothiols such as cysteine (Cys), homocysteine (Hcy) and glutathione (GSH) play significant roles in maintaining biological homeostasis in organisms. Due to their particular significance in the physiology and pathology of humans, accurate determination and differentiation of Cys, Hcy, and GSH for understanding their roles in related diseases are in urgent demand. Herein, a new fluorescentprobe NIPY-NBD was
半胱氨酸(Cys),高半胱氨酸(Hcy)和谷胱甘肽(GSH)等生物硫醇在维持生物体内生物稳态方面起着重要作用。由于它们在人的生理和病理学中的特殊意义,迫切需要准确确定和区分Cys,Hcy和GSH,以了解它们在相关疾病中的作用。本文设计并合成了一种新型的荧光探针NIPY-NBD,用于检测Cys / Hcy和GSH。该探针具有多种优异的特性,包括高灵敏度和低细胞毒性以及良好的细胞膜通透性。此外,探针显示出100倍(λ EX / EM = 310纳米/ 520纳米)和210倍(λ EX / EM= 340 nm / 550 nm)与缓冲液中的Cys反应时荧光增强,并且可以在2.5分钟内快速响应Cys和Hcy。NIPY-NBD进一步成功应用于A549细胞和异种移植小鼠肿瘤组织的成像。综上所述,NIPY-NBD可能在检测和区分活体动物中的Cys / GSH方面具有巨大潜力,可用于肿瘤诊断。