Analytical Methods for Detection of Gasotransmitter Hydrogen Sulfide Released from Live Cells

Figure 5

(a) Schematics of the preparation of Ag nanoplate-based H₂S-sensing paper and its principle of colorimetric and SERS dual-mode detection of H₂S. (b) The concentration of endogenous H₂S release from live LNCaP cells, varying with incubation times. (c) Evaluation of cellular toxicity of 5 mM L-cysteine (Cys) and 1 mM homocysteine (hCys) cotreatment in LNCaP cells. After incubation for 24 and 48 h, cellular toxicity was measured using water-soluble tetrazolium salt (WST) assay and expressed as a percentage of the control without Cys or hCys. Reprinted from [79] with permission from publisher.

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