Quantification of lysosomal labile Zn2+ and monitoring of Zn2+ efflux using a small-molecule–protein hybrid fluorescent probe

IF 3.8 2区 化学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Journal of Inorganic Biochemistry Pub Date : 2024-12-10 DOI:10.1016/j.jinorgbio.2024.112811
Yuyin Du , Toshiyuki Kowada , EunHye Sung , Rong Liu , Andrei Soloviev , Toshitaka Matsui , Shin Mizukami
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Abstract

Lysosomal labile Zn2+ levels have been unclear. By targeting a small-molecule fluorescent Zn2+ probe, ZnDA-3H, to lysosomes via VAMP7-Halo, the lysosomal labile Zn2+ concentration was determined to be 1.9 nM in HeLa cells. Furthermore, ZnDA-3H enabled direct visualization of the Zn2+ efflux from the lysosomes to cytosol upon TRPMLs activation.

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利用小分子-蛋白杂交荧光探针定量溶酶体可溶性 Zn2+ 并监测 Zn2+ 外流。
溶酶体不稳定的Zn2+水平尚不清楚。通过VAMP7-Halo将ZnDA-3H小分子荧光探针靶向溶酶体,测定HeLa细胞中溶酶体不稳定Zn2+浓度为1.9 nM。此外,ZnDA-3H可以直接可视化trpml激活时溶酶体向胞质中流出的Zn2+。
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来源期刊
Journal of Inorganic Biochemistry
Journal of Inorganic Biochemistry 生物-生化与分子生物学
CiteScore
7.00
自引率
10.30%
发文量
336
审稿时长
41 days
期刊介绍: The Journal of Inorganic Biochemistry is an established international forum for research in all aspects of Biological Inorganic Chemistry. Original papers of a high scientific level are published in the form of Articles (full length papers), Short Communications, Focused Reviews and Bioinorganic Methods. Topics include: the chemistry, structure and function of metalloenzymes; the interaction of inorganic ions and molecules with proteins and nucleic acids; the synthesis and properties of coordination complexes of biological interest including both structural and functional model systems; the function of metal- containing systems in the regulation of gene expression; the role of metals in medicine; the application of spectroscopic methods to determine the structure of metallobiomolecules; the preparation and characterization of metal-based biomaterials; and related systems. The emphasis of the Journal is on the structure and mechanism of action of metallobiomolecules.
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