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Repurposed Drug Nitisinone Kills Resistant Mosquitoes via Blood and Surface Contact

Researchers are probing how the HPPD inhibitor penetrates mosquito cuticles to inform indoor spray treatment designs

Overview

  • New findings show that mosquitoes feeding on nitisinone-treated blood and then landing on sprayed surfaces absorb the drug through their tarsi and die
  • Laboratory trials demonstrated lethal effects on Anopheles, Aedes and Culex species, including strains highly resistant to conventional insecticides
  • Nitisinone disrupts bloodmeal digestion by inhibiting the HPPD enzyme in mosquitoes, a target not shared with existing vector control products
  • Its approval for rare metabolic disorders provides a well-characterized safety profile that could accelerate regulatory pathways for public health use
  • Researchers are now developing indoor spray and treated net formulations while investigating the unknown mechanism of cuticular uptake