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Last updated: January 7, 2026

SLO3 Inhibitors

VU0546110, VU6032735

  • User: Female
  • Hormonal: Non-Hormonal
  • Delivery type:
    • Not Yet Determined
  • Intended Duration:
    • Not Yet Determined
  • Development Stage: Discovery & Early Development
  • Developer(s)/researcher(s): Washington University, Vanderbilt University
Details
  • API: SLO3 Inhibitors - Multiple Test Compounds
  • Target: SLO3
  • Mechanism of Action:
    • Inhibition of Sperm Capacitation
  • Inactive Materials: Not Yet Determined
  • Regimen: Not Yet Determined
  • MPT: Not Potential MPT
  • Promising Attributes: To be established - concept is in early development
Product Status

Active or Recent Early Development

History

2023: Evaluation conducted by Washington University and Vanderbilt University determines that SLO3, a sperm-specific potassium channel, plays a key role in sperm hyperpolarization (and mutations of SLO3 may be associated with male infertility. A test SLO3 inhibiting compound, VU0546110, and similar, more potent inhibitors are proposed as having contraceptive potential.
2025: Test compound VU6032735 displays low observed clearance, a long half-life, and high volume of distribution in female mice, with sustained high tissue exposure in the oviduct, indicating its potential as a non-hormonal contraceptive. 

Publications