Apoptosis

, Volume 13, Issue 7, pp 867–882

Reactive oxygen species and imbalance of calcium homeostasis contributes to curcumin induced programmed cell death in Leishmaniadonovani

  • Rakhee Das
  • Amit Roy
  • Neeta Dutta
  • Hemanta K. Majumder
Original Paper

DOI: 10.1007/s10495-008-0224-7

Cite this article as:
Das, R., Roy, A., Dutta, N. et al. Apoptosis (2008) 13: 867. doi:10.1007/s10495-008-0224-7

Abstract

Curcumin, a polyphenol compound, has been recognized as a promising anti-cancer drug. The purpose of the present study was to investigate the cytotoxicity of curcumin to Leishmania donovani, the causative agent for visceral leishmaniasis. Flow cytometric analysis revealed that curcumin induced cell cycle arrest at G2/M phase. Incubation of Leishmania promastigotes with curcumin caused exposure of phosphatidylserine to the outer leaflet of plasma membrane. This event is preceded by curcumin-induced formation of reactive oxygen species (ROS) and elevation of cytosolic calcium through the release of calcium ions from intracellular stores as well as by influx of extracellular calcium. Elevation of cytosolic calcium is responsible for depolarization of mitochondrial membrane potential (ΔΨm), release of Cytochrome c into the cytosol and concomitant nuclear alterations that included deoxynucleotidyltransferase-mediated dUTP end labeling (TUNEL) and DNA fragmentation. Taken together, these data indicate that curcumin has promising antileishmanial activity that is mediated by programmed cell death and, accordingly, merits further investigation as a therapeutic option for the treatment of leishmaniasis.

Keywords

Leishmaniadonovani Curcumin ROS NAC Calcium homeostasis 

Abbreviations

SR

Sarcoplasmic reticulum

ROS

Reactive oxygen species

PI

Propidium iodide

NAC

N-acetyl-cysteine

DMSO

dimethyl sulfoxide

TUNEL

Terminal deoxynucleotidyltransferase enzyme-mediated dUTP end labeling

HU

Hydroxyurea

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Rakhee Das
    • 1
  • Amit Roy
    • 1
  • Neeta Dutta
    • 1
  • Hemanta K. Majumder
    • 1
  1. 1.Department of Molecular ParasitologyIndian Institute of Chemical BiologyKolkataIndia

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