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Inhibiting Plasmodium cytochrome bc1: a complex issue.

Victoria Barton1, Nicholas Fisher, Giancarlo A Biagini

  • 1Department of Chemistry, University of Liverpool, Oxford Street, Liverpool L69 7ZD, UK.

Current Opinion in Chemical Biology
|June 24, 2010
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This summary is machine-generated.

New antimalarial drugs targeting the Plasmodium falciparum cytochrome bc(1) complex show promise. These compounds overcome atovaquone resistance and demonstrate good oral activity in malaria models.

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Area of Science:

  • Biochemistry
  • Parasitology
  • Drug Discovery

Background:

  • The cytochrome bc(1) complex is crucial for mitochondrial electron transport and membrane potential.
  • Atovaquone is the sole drug targeting the Plasmodium falciparum cytochrome bc(1) complex, but resistance is emerging.
  • Atovaquone resistance necessitates the development of alternative antimalarial therapies.

Purpose of the Study:

  • To review recent advancements in cytochrome bc(1) complex inhibitors for malaria treatment.
  • To identify novel drug candidates that can overcome atovaquone resistance.

Main Methods:

  • Review of literature on cytochrome bc(1) complex inhibitors.
  • Analysis of drug classes including hydroxynaphthoquinones, pyridones, acridines, and quinolones.
  • Evaluation of cross-resistance profiles and oral activity in preclinical models.

Main Results:

  • Several classes of bc(1)-targeted inhibitors have been developed.
  • Many novel compounds show minimal cross-resistance with atovaquone-resistant Plasmodium falciparum strains.
  • Selected drug classes exhibit promising oral activity in rodent malaria models.

Conclusions:

  • Developmental cytochrome bc(1) complex inhibitors offer potential alternatives to atovaquone.
  • These compounds could address the challenge of antimalarial drug resistance.
  • Further research into these inhibitors may lead to new malaria treatments.