ArticleScientific reports2025
The impact of Iso-mukaadial acetate on Plasmodium falciparum transcriptional gene regulation.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Malaria remains prevalent globally despite various intervention strategies aimed at preventing its transmission. With the decreasing effectiveness of antimalarial drugs, medicinal plant extracts have been proposed as alternatives. Iso-mukaadial acetate extracted from Warburgia salutaris has shown anti-plasmodial activity, but the mechanism of inhibition is unknown. In this study, RNA sequencing analysis of P. falciparum NF54 strain treated with IMA was conducted to determine the possible targets of IMA. The expression profiles of P. falciparum genes regulated by IMA and chloroquine (antimalarial control) during the intraerythrocytic stage were analyzed with gene ontology tools, including PlasmoDB, ShinyGO and g: Profiler. IMA and chloroquine upregulated genes linked to parasite biological processes and cell adhesion molecular binding functions, including PfEMP1, RIFIN, and STEVOR. Chloroquine specifically downregulated DNA replication processes involving DNA replication licensing factors MCM3 and DNA helicase, while IMA downregulated peptidyl-proline modification and glycolytic pathways. KEGG analysis suggested glycolysis-gluconeogenesis and pentose phosphate pathway enzymes (e.g., glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and glucose-6-phosphate dehydrogenase (G6PD)-6-phosphogluconolactonase) as theoretical IMA targets, whose suppression could hypothetically reduce ATP and NADPH production, weakening parasite energy supply and antioxidant defenses. The inhibition of DNA replication components (MCM complex, DNA topoisomerases) by IMA, and the downregulation of DNA replication/repair proteins by chloroquine, may both impair genome integrity, contributing to the observed anti-plasmodial effects. IMA treatment was assumed to be associated with impairment of parasite energy metabolism, redox balance and DNA replication machinery. These effects differ from chloroquine, which primarily targeted DNA replication and repair processes, yet both drugs upregulated adhesion-associated gene families. Changes in the expression of metabolic and replication genes induced by IMA suggest the compounds potential as an anti-plasmodial candidate, warranting further biochemical validation of its mechanism of effect.
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