New biologically active hydrogen sulfide donors

Area of Science:

• Chemistry
• Biochemistry
• Pharmacology

Background:

• Hydrogen sulfide (H2S) is a crucial signaling molecule in biological systems.
• Developing stable and controllable H2S donors is essential for research and therapeutic applications.
• Existing H2S donors may have limitations in stability or activation mechanisms.

Purpose of the Study:

• To synthesize and characterize novel dithioperoxyanhydrides as potential hydrogen sulfide donors.
• To evaluate the efficiency and mechanism of thiol-activated hydrogen sulfide release from these compounds.
• To assess the biological activity and utility of the most effective donor in cellular and ex vivo models.

Main Methods:

• Synthesis of four dithioperoxyanhydrides: (CH3 COS)2, (PhCOS)2, CH3 COSSCO2 Me, and PhCOSSCO2 Me.
• Assessment of hydrogen sulfide release in aqueous buffer solutions, measuring release kinetics and efficiency.
• Evaluation of the biological response induced by the most potent donor in cell cultures.
• Application of the efficient donor in ex vivo vascular studies to replace gaseous hydrogen sulfide.

Main Results:

• All synthesized dithioperoxyanhydrides demonstrated activity as thiol-activated hydrogen sulfide donors.
• The compound (CH3 COS)2 exhibited the highest efficiency in releasing hydrogen sulfide.
• This efficient donor successfully induced a biological response in cellular assays.
• (CH3 COS)2 proved to be a viable and advantageous substitute for gaseous hydrogen sulfide in ex vivo vascular experiments.

Conclusions:

• Dithioperoxyanhydrides represent a promising class of thiol-activated hydrogen sulfide donors.
• The specific compound (CH3 COS)2 offers a stable, efficient, and biologically relevant source of hydrogen sulfide.
• This donor facilitates advancements in studying hydrogen sulfide's biological roles and potential therapeutic applications.