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Home / Publicações / Synthetic Red Blood Cell-Specific Glycolytic Intermediate 2,3-Diphosphoglycerate (2,3-DPG) Inhibits Plasmodium falciparum Development In Vitro

Synthetic Red Blood Cell-Specific Glycolytic Intermediate 2,3-Diphosphoglycerate (2,3-DPG) Inhibits Plasmodium falciparum Development In Vitro

  • Autores: Inês Morais, Márcia M. Medeiros, Maria Carvalho, Judit Morello, Sara M. Teixeira, Suelma Maciel, Janice Nhantumbo, Ana Balau, Margarida T. G. Rosa, Fatima Nogueira, João Alexandre Rodrigues, Filomena A. Carvalho, Alexandra M. M. Antunes, Ana Paula Arez
  • Ano de Publicação: 2022
  • Journal: Frontiers in Cellular and Infection Microbiology, vol 12, art 840968
  • Link: https://doi.org/10.3389/fcimb.2022.840968

ABSTRACT

Mechanisms of malaria parasite interaction with its host red blood cell may provide potential targets for new antimalarial approaches. Pyruvate kinase deficiency has been associated with resistance to malaria in both experimental models and population studies. Two of the major pyruvate kinase deficient-cell disorders are the decrease in ATP and the increase in 2,3-biphosphoglycerate (2,3-BPG) concentration. High levels of this metabolite, only present in mammalian red blood cell, has an inhibitory effect on glycolysis and we hypothesized that its accumulation may also be harmful to the parasite and be involved in the mechanism of protection provided by that enzymopathy. We examined the effect of a synthetic form, 2,3-DPG, on the Plasmodium falciparum intraerythrocytic developmental cycle in vitro. Results showed an impairment of parasite growth with a direct effect on parasite maturation as significant lower progeny emerged from parasites that were submitted to 2,3-DPG. Further, adding the compound to the culture medium did not result in any effect on the host cell, but instead the metabolic profile of an infected cell became closer to that of a non-infected cell.

KEYWORDS

malaria; host–parasite interactions; red blood cell; 2,3-BPG; 2,3-DPG; glycolysis; pyruvate kinase deficiency.

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About GHTM

GHTM is a R&D Center that brings together researchers from IHMT with a track record in Tropical Medicine and International/Global Health. It aims at strengthening Portugal's role as a leading partner in the development and implementation of a global health research agenda. Our evidence-based interventions contribute to the promotion of equity in health and to improve the health of populations.

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