Hormones and Cancer

, Volume 4, Issue 1, pp 1–11

Intratumoral Estrogen Concentration and Expression of Estrogen-Induced Genes in Male Breast Carcinoma: Comparison with Female Breast Carcinoma

  • Kiyoshi Takagi
  • Takuya Moriya
  • Masafumi Kurosumi
  • Kimako Oka
  • Yasuhiro Miki
  • Akiko Ebata
  • Takashi Toshima
  • Shoji Tsunekawa
  • Hiroyuki Takei
  • Hisashi Hirakawa
  • Takanori Ishida
  • Shin-ichi Hayashi
  • Junichi Kurebayashi
  • Hironobu Sasano
  • Takashi Suzuki
Original Paper

Abstract

It is speculated that estrogens play important roles in the male breast carcinoma (MBC) as well as the female breast carcinoma (FBC). However, estrogen concentrations or molecular features of estrogen actions have not been reported in MBC, and biological significance of estrogens remains largely unclear in MBC. Therefore, we examined intratumoral estrogen concentrations, estrogen receptor (ER) α/ERβ status, and expression profiles of estrogen-induced genes in MBC tissues, and compared these with FBC. 17β-Estradiol concentration in MBC (n = 4) was significantly (14-fold) higher than that in non-neoplastic male breast (n = 3) and tended to be higher than that in FBC (n = 7). Results of microarray analysis clearly demonstrated that expression profiles of the two gene lists, which were previously reported as estrogen-induced genes in MCF-7 breast carcinoma cell line, were markedly different between MBC and FBC. In the immunohistochemistry, MBC tissues were frequently positive for aromatase (63 %) and 17β-hydroxysteroid dehydrogenase type 1 (67 %), but not for steroid sulfatase (6.7 %). A great majority (77 %) of MBC showed positive for both ERα and ERβ, and its frequency was significantly higher than FBC cases. These results suggest that estradiol is locally produced in MBC tissue by aromatase. Different expression profiles of the estrogen-induced genes may associate with different estrogen functions in MBC from FBC, which may be partly due to their ERα/ERβ status.

Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Kiyoshi Takagi
    • 1
  • Takuya Moriya
    • 2
  • Masafumi Kurosumi
    • 3
  • Kimako Oka
    • 4
  • Yasuhiro Miki
    • 5
  • Akiko Ebata
    • 6
  • Takashi Toshima
    • 7
  • Shoji Tsunekawa
    • 8
  • Hiroyuki Takei
    • 9
  • Hisashi Hirakawa
    • 4
  • Takanori Ishida
    • 6
  • Shin-ichi Hayashi
    • 10
  • Junichi Kurebayashi
    • 11
  • Hironobu Sasano
    • 5
    • 12
  • Takashi Suzuki
    • 1
  1. 1.Department of Pathology and HistotechnologyTohoku University Graduate School of MedicineSendaiJapan
  2. 2.Department of Pathology 2Kawasaki Medical SchoolKurashikiJapan
  3. 3.Department of PathologySaitama Cancer CenterSaitamaJapan
  4. 4.Department of SurgeryTohoku Kosai HospitalSendaiJapan
  5. 5.Department of Anatomic PathologyTohoku University Graduate School of MedicineSendaiJapan
  6. 6.Department of Surgical OncologyTohoku University Graduate School of MedicineSendaiJapan
  7. 7.Department of SurgeryTohoku Rosai HospitalSendaiJapan
  8. 8.Department of SurgeryKansai Electric Power HospitalOsakaJapan
  9. 9.Division of Breast SurgerySaitama Cancer CenterSaitamaJapan
  10. 10.Department of Molecular and Functional DynamicsTohoku University Graduate School of MedicineSendaiJapan
  11. 11.Department of Breast and Thyroid SurgeryKawasaki Medical SchoolKurashikiJapan
  12. 12.Department of PathologyTohoku University HospitalSendaiJapan

Personalised recommendations