Chemopreventive effect of aerosolized polyphenon E on lung tumorigenesis in A/J mice

Ying Yan, Julie Cook, Jay McQuillan, Guifang Zhang, Cory J. Hitzman, Yian Wang, Timothy S. Wiedmann, Ming You

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Effective chemoprevention of lung cancer in high-risk patients through the administration of pharmacologic or nutritional agents is urgently needed. Aerosol inhalation can deliver chemopreventive agents directly to the respiratory tract to inhibit the tumorigenic process. In this study, polyphenon E (PolyE) and (-)-epigallocatechin-3-gallate (EGCG) were administered by aerosol delivery to A/J mice beginning 2 weeks after carcinogen treatment and continuing daily by inhalation throughout the remainder of the study (20 weeks). PolyE decreased tumor load by ∼ 59%. However, EGCG, both at the same dose and at a higher dose, failed to inhibit lung carcinogenesis. These results indicate that aerosol delivery of PolyE, but not EGCG, may be a useful chemopreventive protocol in subjects at high risk for lung cancer.

Original languageEnglish (US)
Pages (from-to)401-405
Number of pages5
JournalNeoplasia
Volume9
Issue number5
DOIs
StatePublished - May 2007

Keywords

  • Aerosol
  • Chemoprevention
  • Lung tumorigenesis
  • Mouse
  • Polyphenon E

ASJC Scopus subject areas

  • Cancer Research

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