l -Buthionine-sulfoximine (BSO) induces oxidative stress in a cell by irreversibly inhibiting γ-glutamylcysteine synthetase, an essential enzyme for the synthesis of glutathione (GSH).

What is BSO drug?

Buthionine sulfoximine (BSO) is an inhibitor of glutathione biosynthesis and may increase cytotoxicities of alkylating agents, including melphalan and cisplatin, and radiation in sensitive and resistant cell lines.