Determination of antiplasmodial activity and binding affinity of curcumin and demethoxycurcumin towards PfTrxR

Ranjith Munigunti, Symon Gathiaka, Orlando Acevedo, Rajnish Sahu, Babu Tekwani, Angela I. Calderón

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

In our study, the inhibitory activity of curcuminoids towards Plasmodium falciparum thioredoxin reductase (PfTrxR) was determined using LC-MS-based functional assay and showed that only demethoxycurcumin (DMC) inhibited PfTrxR (IC50: 2 μM). In silico molecular modelling was used to ascertain and further confirm that the binding affinities of curcumin and DMC are towards the dimer interface of PfTrxR. The in vitro antiplasmodial activities of curcumin and DMC were evaluated and shown to be active against chloroquine (CQ)-sensitive (D6 clone) and moderately active against CQ-resistant (W2 clone) strains of Plasmodium falciparum while no cytotoxicity was observed against Vero cells.

Original languageEnglish (US)
Pages (from-to)359-364
Number of pages6
JournalNatural Product Research
Volume28
Issue number6
DOIs
StatePublished - Mar 19 2014
Externally publishedYes

Keywords

  • Plasmodium falciparum thioredoxin reductase (PfTrxR)
  • liquid chromatography-mass spectrometry-based assays
  • molecular modelling

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Plant Science
  • Organic Chemistry

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