Correlated expression of peroxisome proliferator-activated receptor γ with high histologic grade and basal type in invasive ductal carcinoma of the breast

Hoiseon Jeong, Youngseok Lee, Jungsuk An, Ok Hee Woo, Kyong Hwa Park, Aeree Kim

Research output: Contribution to journalArticle


Backgroud and aim: Peroxisome proliferator-activated receptor γ (PPARγ) is one of the ligand-activated transcription factors belonging to the nuclear hormone receptor family. The protein is expressed in various kinds of tumor and has been implicated as a tumor suppressor in most cancers. We aimed to understand the role of PPARγ in breast cancer. Methods: The expression of PPARγ in 288 cases of invasive ductal carcinoma was examined using tissue microarray and immunohistochemistry. Results: PPARγ immunoreactivity was detected in 21.5% of cases and significantly associated with expression of EGFR and ki-67 (P = 0.008; P = 0.046). PPARγ expression was correlated with high histological grade and basal type (P ≤ 0.001; P =0.009).Conclusions: PPARγ expressionis related to poor prognostic factors of breast cancer. It is considered that PPARγ has evident tumor promoting properties in vivo, but receptor-independent effects of PPARγ ligands may compound its biologic effects in cancer. A better understanding of action mechanisms of the activated PPARγ is required.

Original languageEnglish
Pages (from-to)118-124
Number of pages7
JournalBasic and Applied Pathology
Issue number4
Publication statusPublished - 2009 Dec 1



  • Breast
  • Carcinoma
  • Ductal
  • Immunohistochemistry
  • Peroxisome proliferating response elememt

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Medicine(all)

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