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Antimalarials

New Insights into Antiplasmodial Agents Offer Hope Against Malaria

Strategic Insights

— 1 min read

Researchers from the State University of Campinas (UNICAMP) have made significant progress in developing new antimalarial agents. Despite the rise of resistance to existing treatments, the team has identified and optimized indole-2-carboxamide derivatives that exhibit enhanced potency and improved metabolic stability. These compounds have shown promise in targeting the parasite's digestive vacuole, offering a novel approach to combatting malaria. Furthermore, the research has highlighted the need for innovative medicinal chemistry to overcome cross-resistance and ensure the effectiveness of these new agents.

Key Takeaways:

  • Researchers from the State University of Campinas (UNICAMP) have identified and optimized indole-2-carboxamide derivatives with enhanced potency (3D7-IC50 0.3 mM) and improved metabolic stability (hMics = 3 mL/min/mg).
  • The new compounds have shown minimal human ether-a-go-go-related gene (hERG) channel activity and cytotoxic effect on hepatic cells (CC 30 mM).
  • The mode-of-action investigations revealed that a representative compound interfered with the homeostasis of the parasite's digestive vacuole.
  • Cross-resistance was observed with resistant strains, but was linked to efflux pumps such as the chloroquine resistance transporter (CRT).
  • The indole-2-carboxamides provide versatile molecular templates for innovative medicinal chemistry to overcome cross-resistance while maintaining other attractive properties.
  • The research has been supported by the Universidade Estadual de Campinas (UNICAMP), Bill and Melinda Gates Foundation, Medicines for Malaria Venture, and Fundacao de Amparo a Pesquisa do Estado de Sao Paulo.
  • The study has significant implications for the development of new antimalarial agents and the combat against malaria.

Statistics:

  • 3D7-IC50 of 0.3 mM for the optimized indole-2-carboxamide compounds.
  • hMics of 3 mL/min/mg for the new compounds.
  • Minimal hERG channel activity observed in the new compounds (IC 20 mM).
  • Cytotoxic effect on hepatic cells (CC) of 30 mM for the new compounds.
  • The study has been published in ACS Bio & Med Chem Au, 2025;5(5):821-839.

Sources:

  • NewsRx, 2025, Recent Findings from State University of Campinas (UNICAMP) Provide New Insights into Antiplasmodial Agents (Indole-2-carboxamides Optimization for Antiplasmodial Activity)
  • ACS Bio & Med Chem Au, 2025;5(5):821-839, Indole-2-carboxamides Optimization for Antiplasmodial Activity
  • Universidade Estadual de Campinas (UNICAMP), State University of Campinas
  • Bill and Melinda Gates Foundation
  • Medicines for Malaria Venture
  • Fundacao de Amparo a Pesquisa do Estado de Sao Paulo

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