Exploring the Potential of Sulfur Moieties in Compounds Inhibiting Steroidogenesis

Area of Science:

• Medicinal Chemistry
• Enzyme Inhibition
• Steroidogenesis

Background:

• Cytochrome P450 17α-hydroxylase/12,20-lyase (CYP17A1) is a key enzyme in steroid hormone biosynthesis.
• Inhibitors of CYP17A1 are crucial for treating hormone-dependent diseases.
• Developing selective and potent inhibitors remains a significant challenge.

Purpose of the Study:

• To synthesize and evaluate novel chemical entities as CYP17A1 inhibitors.
• To explore the potential of sulfur-substituted phenyl groups as replacements for nitrogen-containing heterocycles in CYP17A1 inhibitor design.
• To assess the selectivity and dual inhibition potential of these novel compounds.

Main Methods:

• Synthesis of novel compounds featuring phenyl rings with sulfur-based substituents.
• In vitro enzymatic assays to determine CYP17A1 inhibition.
• Selectivity profiling against related cytochrome P450 enzymes (CYP21, CYP3A4) and cytochrome P450 oxidoreductase.
• Assessment of inhibitory activity against aldo-keto reductase 1C3 (AKR1C3).
• Evaluation of the compounds' effects on steroid hormone levels.

Main Results:

• Several novel compounds demonstrated significant inhibition of CYP17A1 activity.
• The synthesized compounds exhibited varying degrees of selectivity against other cytochrome P450 enzymes.
• Weak inhibitory activity was observed against aldo-keto reductase 1C3 (AKR1C3).
• Notable modulatory effects on steroid hormone levels were detected in some compounds.

Conclusions:

• The novel sulfur-substituted phenyl compounds are effective CYP17A1 inhibitors.
• These compounds represent a promising scaffold for developing dual inhibitors targeting both CYP17A1 and AKR1C3.
• This research opens avenues for new therapeutic strategies in hormone-related disorders.