Selective Persulfide Detection Reveals Evolutionarily Conserved Antiaging Effects of S-Sulfhydration

Sulfenylation Male sulfenylation Aging Redox signaling [SDV]Life Sciences [q-bio] hydrogen sulfide 610 hydrogen peroxide Saccharomyces cerevisiae Protein persulfidation Cell Line Mice Escherichia coli Animals Humans Cysteine Hydrogen Sulfide Rats, Wistar redox signaling Caenorhabditis elegans Sulfonylation Calorie restriction sulfonylation Hydrogen sulfide Staining and Labeling protein persulfidation Cyclohexanones aging calorie restriction Fibroblasts Hydrogen peroxide Rats Mice, Inbred C57BL Oxidative Stress Drosophila melanogaster Protein Processing, Post-Translational sulfinylation Sulfinylation
DOI: 10.1016/j.cmet.2019.10.007 Publication Date: 2019-11-14T15:40:55Z
ABSTRACT
Life on Earth emerged in a hydrogen sulfide (H2S)-rich environment eons ago and with it protein persulfidation mediated by H2S evolved as a signaling mechanism. Protein persulfidation (S-sulfhydration) is a post-translational modification of reactive cysteine residues, which modulate protein structure and/or function. Persulfides are difficult to label and study due to their reactivity and similarity with cysteine. Here, we report a facile strategy for chemoselective persulfide bioconjugation using dimedone-based probes, to achieve highly selective, rapid, and robust persulfide labeling in biological samples with broad utility. Using this method, we show persulfidation is an evolutionarily conserved modification and waves of persulfidation are employed by cells to resolve sulfenylation and prevent irreversible cysteine overoxidation preserving protein function. We report an age-associated decline in persulfidation that is conserved across evolutionary boundaries. Accordingly, dietary or pharmacological interventions to increase persulfidation associate with increased longevity and improved capacity to cope with stress stimuli.
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