Collateral Sensitivity of Multidrug-Resistant Cells to the Orphan Drug Tiopronin
作者:Andrew S. Goldsborough、Misty D. Handley、Andrés E. Dulcey、Kristen M. Pluchino、Pavitra Kannan、Kyle R. Brimacombe、Matthew D. Hall、Gary Griffiths、Michael M. Gottesman
DOI:10.1021/jm2001663
日期:2011.7.28
P-gp. Long-term exposure of P-gp-expressing cells to 1 sensitized them to doxorubicin and paclitaxel, both P-gp substrates. Treatment of MRP1-overexpressing cells with tiopronin led to a significant reduction in MRP1 protein. Synthesis and screening of analogues of tiopronin demonstrated that the thiol functional group was essential for collateralsensitivity while substitution of the amino acid backbone
Kinetics and mechanism of reactions of the drug tiopronin with platinum(IV) complexes
作者:Shuying Huo、Hongmei Shi、Dongzhi Liu、Shigang Shen、Jiong Zhang、Changying Song、Tiesheng Shi
DOI:10.1016/j.jinorgbio.2013.04.003
日期:2013.8
Pt(IV) complexes, enabling to establish an overall second-order rate law: − d[Pt(IV)] / dt = k′[Tiopronin][Pt(IV)], where k′ pertains to observed second-order rate constants. Under the kinetic conditions, tiopronin was oxidized to form the tiopronin-disulfide exclusively as identified by mass spectrometry. A reaction mechanism was proposed, involving parallel reductions of the Pt(IV) complexes by the