Curcumin suppresses growth and induces apoptosis in primary effusion lymphoma

Shahab Uddin*, Azhar R. Hussain, Pulicat S. Manogaran, Khaled Al-Hussein, Leonidas C. Platanias, Marina I. Gutierrez, Kishor G. Bhatia

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

110 Scopus citations

Abstract

The mechanisms that regulate induction of the antiapoptotic state and mitogenic signals in primary effusion lymphoma (PEL) are not well known. In efforts to identify novel approaches to block the proliferation of PEL cells, we found that curcumin (diferuloylmethane), a natural compound isolated from the plant Curcuma Ionga, inhibits cell proliferation and induces apoptosis in a dose dependent manner in several PEL cell lines. Such effects of curcumin appear to result from suppression of the constitutively active STAT3 through inhibition of Janus kinase 1 (JAK1). Our data also demonstrate that curcumin induces loss of mitochondrial membrane potential with subsequent release of cytochrome c and activation of caspase-3, followed by polyadenosin-5′-diphosphate-ribose polymerase (PARP) cleavage. Altogether, our findings suggest a novel function for curcumin, acting as a suppressor of JAK-1 and STAT3 activation in PEL cells, leading to inhibition of proliferation and induction of caspase-dependent apoptosis. Therefore, curcumin may have a future therapeutic role in PEL and possibly other malignancies with constitutive activation of STAT3.

Original languageEnglish (US)
Pages (from-to)7022-7030
Number of pages9
JournalOncogene
Volume24
Issue number47
DOIs
StatePublished - Oct 27 2005

Keywords

  • Cell death
  • Curcumin
  • NHL therapy
  • PEL

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Cancer Research

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