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Research ArticleExperimental Studies

Expression Profiles of Apoptotic Genes Induced by Curcumin in Human Breast Cancer and Mammary Epithelial Cell Lines

CHEPPAIL RAMACHANDRAN, SONIA RODRIGUEZ, RESHMA RAMACHANDRAN, P.K. RAVEENDRAN NAIR, HUGO FONSECA, ZIAD KHATIB, ENRIQUE ESCALON and STEVEN J. MELNICK
Anticancer Research September 2005, 25 (5) 3293-3302;
CHEPPAIL RAMACHANDRAN
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  • For correspondence: cheppail.ramachandran@mch.com
SONIA RODRIGUEZ
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RESHMA RAMACHANDRAN
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P.K. RAVEENDRAN NAIR
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HUGO FONSECA
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ZIAD KHATIB
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ENRIQUE ESCALON
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STEVEN J. MELNICK
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Abstract

Curcumin (diferuloyl methane), the yellow-colored dietary pigment from the rhizomes of turmeric, has been recognized as a chemopreventive agent because of its antitumor, antioxidant and antiproliferative effects. The cytotoxic, apoptotic and gene regulatory effects of both turmeric and curcumin were investigated in the MCF-7 human breast cancer carcinoma cell line and compared with the effects in MCF-10A human mammary epithelial cells. MCF-7 cells were more sensitive to turmeric and curcumin than MCF-10A cells. MCF-10A cells retained comparatively less curcumin in the medium than MCF-7 cells after 24 h, thereby reducing the cytotoxic effect. Curcumin induced a significantly higher percentage of apoptosis in MCF-7 than MCF-10A cells at all doses. Microarray hybridization of Clonetech apoptotic arrays with labeled first-strand probes of total RNA was performed to identify and characterize the genes regulated by curcumin in tumor cells. Of the 214 apoptosis-associated genes in the array, the expression of 104 genes was altered by curcumin treatment. The gene expression was altered up to14-fold levels in MCF-7 as compared to only up to 1.5-fold in the MCF-10A cell line by curcumin. Curcumin up-regulated (>3 fold) 22 genes and down-regulated (<3-fold) 17 genes at both 25 μg/ml and 50 μg/ml doses in the MCF-7 cell line. The up-regulated genes include HIAP1, CRAF1, TRAF6, CASP1, CASP2, CASP3, CASP4, HPRT, GADD45, MCL-1, NIP1, BCL2L2, TRAP3, GSTP1, DAXX, PIG11, UBC, PIG3, PCNA, CDC10, JNK1 and RBP2. The down-regulated genes were TRAIL, TNFR, AP13, IGFBP3, SARP3, PKB, IGFBP, CASP7, CASP9, TNFSF6, TRICK2A, CAS, TRAIL-R2, RATS1, hTRIP, TNFb and TNFRSF5. While a dose-dependent gene expression change was noticed in some genes, opposite regulatory effects were induced by different curcumin doses in three apoptotic genes. These results suggest that curcumin induces apoptosis in breast cancer cells by regulation of multiple signaling pathways, indicating its potential use for prevention and treatment of cancer.

  • Apoptotic genes
  • curcumin
  • breast cancer

Footnotes

  • Received June 6, 2005.
  • Accepted June 15, 2005.
  • Copyright© 2005 International Institute of Anticancer Research (Dr. John G. Delinassios), All rights reserved
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Anticancer Research: 25 (5)
Anticancer Research
Vol. 25, Issue 5
1 Sep 2005
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Expression Profiles of Apoptotic Genes Induced by Curcumin in Human Breast Cancer and Mammary Epithelial Cell Lines
CHEPPAIL RAMACHANDRAN, SONIA RODRIGUEZ, RESHMA RAMACHANDRAN, P.K. RAVEENDRAN NAIR, HUGO FONSECA, ZIAD KHATIB, ENRIQUE ESCALON, STEVEN J. MELNICK
Anticancer Research Sep 2005, 25 (5) 3293-3302;

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Expression Profiles of Apoptotic Genes Induced by Curcumin in Human Breast Cancer and Mammary Epithelial Cell Lines
CHEPPAIL RAMACHANDRAN, SONIA RODRIGUEZ, RESHMA RAMACHANDRAN, P.K. RAVEENDRAN NAIR, HUGO FONSECA, ZIAD KHATIB, ENRIQUE ESCALON, STEVEN J. MELNICK
Anticancer Research Sep 2005, 25 (5) 3293-3302;
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