TY - JOUR
T1 - Design, Structure–Activity Relationships, and Enzyme Kinetic Studies of Tricyclic and Tetracyclic Coumarin–based Sulfamates as Steroid Sulfatase Inhibitors
AU - Chiu, Pei-Fang
AU - Lin, I-Chun
AU - Lu, Yeh-Lin
AU - Chang, Chiao-Nien
AU - Chan, Hui-Yu
AU - Lin, Tzung-Shen
AU - Tsai, Keng-Chang
AU - S. Y. Hsieh, Yves
AU - Chen, Mei-Jou
AU - Lin, Mei-Hsiang
AU - Liang, Pi-Hui
N1 - Funding Information:
P.-F.C. is thankful for the scholarship from the XinChen Medical Research Foundation, Taiwan.
Funding Information:
This work was financially supported by the National Science and Technology Councils, Taiwan (104-2320-B-002-008-MY3, 107-2320-B-002-019-MY3, 108-3114-Y-001-002, 111-2628-B-002 -046 -; and 111-2622-8-002 -016 -TB1).
Publisher Copyright:
© 2023 Elsevier Inc.
PY - 2023/9
Y1 - 2023/9
N2 - Inhibition of steroid sulfatase (STS) decreases estrogen production and thus, suppresses tumor proliferation. Inspired by irosustat, the first STS inhibitor in clinical trials, we explored twenty-one tricyclic and tetra-heterocyclic coumarin–based derivatives. Their STS enzyme kinetic parameters, docking models, and cytotoxicity toward breast cancer and normal cells were evaluated. Tricyclic derivative 9e and tetracyclic derivative 10c were the most promising irreversible inhibitors developed in this study, with KI of 0.05 and 0.4 nM, and kinact/KI ratios of 28.6 and 19.1 nM−1min−1 on human placenta STS, respectively.
AB - Inhibition of steroid sulfatase (STS) decreases estrogen production and thus, suppresses tumor proliferation. Inspired by irosustat, the first STS inhibitor in clinical trials, we explored twenty-one tricyclic and tetra-heterocyclic coumarin–based derivatives. Their STS enzyme kinetic parameters, docking models, and cytotoxicity toward breast cancer and normal cells were evaluated. Tricyclic derivative 9e and tetracyclic derivative 10c were the most promising irreversible inhibitors developed in this study, with KI of 0.05 and 0.4 nM, and kinact/KI ratios of 28.6 and 19.1 nM−1min−1 on human placenta STS, respectively.
KW - Coumarin
KW - Hormone-dependent cancer
KW - Irreversible inhibitors
KW - Steroid sulfatase
KW - Sulfamate
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U2 - 10.1016/j.bioorg.2023.106581
DO - 10.1016/j.bioorg.2023.106581
M3 - Article
SN - 0045-2068
VL - 138
JO - Bioorganic Chemistry
JF - Bioorganic Chemistry
M1 - 106581
ER -