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Author Spotlight: Identifying Compensatory Pathways in Malaria Parasites Containing Hypomorphic Allele of Essential Protein Kinases
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Author Spotlight: Identifying Compensatory Pathways in Malaria Parasites Containing Hypomorphic Allele of Essential Protein Kinases

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A patatin-like phospholipase is important for mitochondrial function in malaria parasites

Emma Pietsch1,2,3, Abhinay Ramaprasad4, Sabrina Bielfeld1,2,3

  • 1Centre for Structural Systems Biology, Hamburg, Germany.

Mbio
|October 26, 2023
PubMed
Abstract

Insights

A newly identified enzyme, Plasmodium falciparum patatin-like phospholipase 2 (PfPNPLA2), is crucial for malaria parasite replication and mitochondrial function. Disrupting this enzyme impairs the electron transport chain and affects parasite transmission.

Area of Science:

  • Malariology
  • Mitochondrial Biology
  • Parasitology

Background:

  • The malaria parasite Plasmodium falciparum relies on a functional mitochondrial electron transport chain (ETC) for proliferation within red blood cells.
  • The ETC is a validated target for antimalarial drugs, highlighting its importance in parasite survival.

Purpose of the Study:

  • To investigate the role of patatin-like phospholipase (PfPNPLA2) in Plasmodium falciparum replication and mitochondrial function.
  • To determine the impact of PfPNPLA2 deficiency on parasite susceptibility to antimalarial drugs and its role in parasite development.

Main Methods:

  • Gene disruption was employed to create PfPNPLA2-deficient Plasmodium falciparum parasites.
  • Analysis of the electron transport chain function, cardiolipin composition, and gametocyte maturation was performed.

Main Results:

  • Parasites lacking PfPNPLA2 exhibited significant defects in their ETC function.
  • PfPNPLA2-deficient parasites showed increased sensitivity to mitochondrion-targeting antimalarial drugs.
  • Alterations in cardiolipin composition were observed in PfPNPLA2-deficient parasites.
  • A defect in gametocyte maturation was evident in parasites devoid of PfPNPLA2.

Conclusions:

  • PfPNPLA2 is essential for Plasmodium falciparum replication, mitochondrial function, and parasite development.
  • Targeting PfPNPLA2 or its associated pathways could represent a novel antimalarial strategy.
  • A functional ETC, influenced by PfPNPLA2, is critical for parasite transmission to the mosquito vector.
Keywords:
cardiolipinelectron transport chainmalariamitochondrionpatatin-like phospholipase

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