Targeted Endocrine Therapy: Design, Synthesis, and Proof-of-Principle of 17β-Hydroxysteroid Dehydrogenase Type 2 Inhibitors in Bone Fracture Healing
摘要:
Current therapies of steroid hormone-dependent diseases predominantly alter steroid hormone concentrations (or their actions) in plasma, in target and nontarget tissues alike, rather than in target organs only. Targeted therapy through the inhibition of steroidogenic enzymes may pose an attractive alternative with much less side effects. Here, we describe the design of a nanomolar potent 17 beta-hydroxysteroid dehydrogenase type 2 (17 beta-HSD2) inhibitor (compound 15) and successful targeted intracrine therapy in a mouse bone fracture model. Blockade of 17 beta-HSD2 in bone is thought to increase intracellular estradiol (E2) and testosterone (T), which thereby inhibits bone resorption by osteoclasts and stimulates bone formation by osteoblasts, respectively. Administration of compound 15 in the mouse fracture model strongly increases the mechanical stability of the healing fractured bone because of a larger periosteal callus with newly formed bone without changing the plasma E2 and T concentrations. Steroidogenic 17 beta-HSD2 inhibition thus enables targeted intracrine therapy.
Treatment of estrogen-dependent diseases: Design, synthesis and profiling of a selective 17β-HSD1 inhibitor with sub-nanomolar IC 50 for a proof-of-principle study
作者:Ahmed S. Abdelsamie、Chris J. van Koppen、Emmanuel Bey、Mohamed Salah、Carsten Börger、Lorenz Siebenbürger、Matthias W. Laschke、Michael D. Menger、Martin Frotscher
DOI:10.1016/j.ejmech.2016.11.004
日期:2017.2
discovery of (5-(3,5-dichloro-4-methoxyphenyl)thiophen-2-yl)(2,6-difluoro-3-hydroxyphenyl)methanone 20, which displayed a sub-nanomolar IC50 towards 17β-HSD1 as well as high selectivity over the type 2 enzyme, the estrogenreceptors α and β and a range of hepatic CYP enzymes. The compound did neither show cellular toxicity, nor PXR activation nor mutagenicity in the AMES II assay. Additional favourable pharmacokinetic
Targeted Endocrine Therapy: Design, Synthesis, and <i>Proof-of-Principle</i> of 17β-Hydroxysteroid Dehydrogenase Type 2 Inhibitors in Bone Fracture Healing
作者:Ahmed S. Abdelsamie、Steven Herath、Yannik Biskupek、Carsten Börger、Lorenz Siebenbürger、Mohamed Salah、Claudia Scheuer、Sandrine Marchais-Oberwinkler、Martin Frotscher、Tim Pohlemann、Michael D. Menger、Rolf W. Hartmann、Matthias W. Laschke、Chris J. van Koppen
DOI:10.1021/acs.jmedchem.8b01493
日期:2019.2.14
Current therapies of steroid hormone-dependent diseases predominantly alter steroid hormone concentrations (or their actions) in plasma, in target and nontarget tissues alike, rather than in target organs only. Targeted therapy through the inhibition of steroidogenic enzymes may pose an attractive alternative with much less side effects. Here, we describe the design of a nanomolar potent 17 beta-hydroxysteroid dehydrogenase type 2 (17 beta-HSD2) inhibitor (compound 15) and successful targeted intracrine therapy in a mouse bone fracture model. Blockade of 17 beta-HSD2 in bone is thought to increase intracellular estradiol (E2) and testosterone (T), which thereby inhibits bone resorption by osteoclasts and stimulates bone formation by osteoblasts, respectively. Administration of compound 15 in the mouse fracture model strongly increases the mechanical stability of the healing fractured bone because of a larger periosteal callus with newly formed bone without changing the plasma E2 and T concentrations. Steroidogenic 17 beta-HSD2 inhibition thus enables targeted intracrine therapy.