Inhibitory effect of pterin acid against ricin and recombinant ricin A chain / 军事医学科学院院刊

Objective To study the inhibitory effect of pterin acid (PTA) against ricin and recombinant ricin A chain protein. Methods Luciferase protein synthesis inhibition assay in a cell-free system and in vitro cytotoxicity experiments were performed to assess the biological activity of ricin and rRTA treated with PTA.Results The result showed that PTA could significantly inhibit the activity of ricin and rRTA in a dose-dependent manner.Conclusion PTA might be used as a small molecular probe to develop an evaluating system for ricin/RTA small molecular inhibitor in vitro. The cell-free system adopted in the current study could also serve as a necessary basis for screening some novel small molecular compounds against ricin and RTA in the future.