Vitamin E analog α-TEA and celecoxib alone and together reduce human MDA-MB-435-FL-GFP breast cancer burden and metastasis in nude mice

Shuo Zhang, Karla A. Lawson, Marla Simmons-Menchaca, Lu Zhe Sun, Bob G. Sanders, Kimberly Kline

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

α-TEA, a nonhydrolyzable ether analog of vitamin E (RRR-α-tocopherol), and celecoxib, a specific COX-2 inhibitor, were delivered separately or in combination to investigate their anticancer properties, using MDA-MB-435-FL-GFP human breast cancer xenografts in nude mice. Liposomal formulated α-TEA administered as an aerosol and celecoxib fed at 500 or 1250 mg/kg diet for 31 days separately or in combination significantly reduced tumor volume in comparison to control (p < 0.001 for all treatment groups). Of special note, the combinations of α-TEA + celecoxib (1250) inhibited tumor volume significantly better than either single treatment (p < 0.001 and p < 0.001). Average number of macroscopic lung metastases were significantly reduced in all treatment groups in comparison to control, with the exception of celecoxib (500). Mean numbers of microscopic lung and lymph node metastases in all treatment groups were significantly lower than control. Furthermore, the mean number of microscopic lung metastases in the α-TEA+celecoxib (1250) group were significantly lower than either separate treatment. Analyses of 5 μm tumor sections showed that all treatments, with the exception of celecoxib (500) alone, significantly enhanced apoptosis (TUNEL) and significantly decreased cell proliferation (Ki-67). α-TEA and α-TEA + celecoxib (1250) treatments significantly reduced blood vessel density (CD-31) in comparison to control. These data show promise for combination α-TEA + celecoxib chemotherapy for breast cancer.

Original languageEnglish (US)
Pages (from-to)111-121
Number of pages11
JournalBreast Cancer Research and Treatment
Volume87
Issue number2
DOIs
StatePublished - Sep 1 2004

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Keywords

  • CD-31
  • Ki-67 nuclear antigen
  • TUNEL
  • apoptosis
  • celecoxib
  • human MDA-MB-435-FL-GFP breast cancer xenografts
  • metastasis
  • vitamin E analog α-TEA

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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