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COX-2 inhibitors for the prevention of breast cancer

Louise R Howe1, Andrew J Dannenberg

  • 1Department of Cell and Developmental Biology, Weill Medical College of Cornell University, New York, New York, USA. lrhowe@med.cornell.edu

Journal of Mammary Gland Biology and Neoplasia
|November 1, 2003
PubMed

Insights

Cyclooxygenase-2 (COX-2) is overexpressed in breast cancer, particularly HER2-positive types, and linked to poor prognosis. COX-2 inhibition shows promise for breast cancer prevention and treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Cyclooxygenase-2 (COX-2) is inducible and plays roles in kidney, brain, reproduction, and inflammation.
  • COX-2 misexpression is observed in various human cancers, including colorectal and recently identified in breast cancer.
  • COX-2 overexpression is present in approximately 40% of invasive breast carcinomas, especially those overexpressing HER2/neu.

Purpose of the Study:

  • To investigate the role of COX-2 in breast cancer development and progression.
  • To evaluate the potential of COX-2 inhibitors as a therapeutic strategy for breast cancer.

Main Methods:

  • Analysis of COX-2 expression in human breast cancer tissues.
  • Utilizing transgenic overexpression and knockout models to study COX-2 gene dosage effects on tumorigenesis.
  • Translational experiments in rodent breast cancer models to assess COX-2 inhibition efficacy.

Main Results:

  • COX-2 expression correlates with poor patient prognosis in breast cancer.
  • COX-2 plays a significant role in tumorigenesis, as indicated by gene dosage studies.
  • COX-2 inhibition demonstrated effectiveness in preventing and treating experimental breast cancers.

Conclusions:

  • COX-2 contributes to multiple aspects of tumorigenesis, including angiogenesis.
  • Selective COX-2 inhibitors represent a promising therapeutic avenue for breast cancer prevention and treatment.
  • Targeting COX-2 may offer a novel strategy against human breast cancer.

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