Hits:

Indexed by:期刊论文

Date of Publication:2018-02-02

Journal:Angewandte Chemie (International ed. in English)

Included Journals:PubMed

ISSN No.:1521-3773

Key Words:Hydrogen sulfide,analytical method,in vivo sensing,luminescent imaging,ruthenium complex

Abstract:Development of novel bioanalytical methods for monitoring of H2S is the key to understand the physiological and pathological functions of this gasotransmitter in live organisms. Herein, a ruthenium(II) complex-based luminescence probe, Ru-MDB, was developed by introducing a new H2S responsive masking moiety to red emitting RuII luminophore. Cleavage of this masking group by a H2S-triggered reaction leads to the luminescence "OFF-ON" response. The long-lived emissions of Ru-MDB and its reaction product with H2S allowed quantitative detection of H2S in autofluorescence-rich human sera and adult zebrafish organs with time-gated luminescence mode. Ru-MDB showed red emission, large Stokes shift, high specificity and sensitivity for H2S detection, and low cytotoxicity, which enabled the imaging and flow cytometry analysis of lysosomal H2S generation in inflammation of live cells under drug stimulation. Monitoring of H2S in live Daphnia magna, zebrafish embryos, adult zebrafish, and mice was then conducted by in vivo imaging using Ru-MDB as a probe. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.