Journal of Mammary Gland Biology and Neoplasia

, Volume 2, Issue 4, pp 393–402

Elucidation of a Role for Stromal Steroid Hormone Receptors in Mammary Gland Growth and Development Using Tissue Recombinants

  • G. R. Cunha
  • P. Young
  • Y. K. Hom
  • P. S. Cooke
  • J. A. Taylor
  • D. B. Lubahn
Article

DOI: 10.1023/A:1026303630843

Cite this article as:
Cunha, G.R., Young, P., Hom, Y.K. et al. J Mammary Gland Biol Neoplasia (1997) 2: 393. doi:10.1023/A:1026303630843

Abstract

The use of tissue recombinants in conjunction with steroid receptor deficient mice is described as a tool to dissect the complex paracrine pathways of sex-hormone-regulated epithelial growth and ductal morphogenesis in the mammary gland and other hormone target organs. The basic methodology involves the construction of the four possible tissue recombinants composed of epithelium (E)6 and stroma (S) from wild-type (wt) and knock-out (KO) mice: wt-S + wt-S, wt-S + KO-E, KO-S + KO-E, and KO-S + wt-E. All tissue recombinants are grown as subrenal capsule grafts in nude mice. Following appropriate hormonal challenge epithelial growth can be studied in the four types of tissue recombinants. Such studies using estrogen receptor, androgen receptor and progesterone receptor knockout mice demonstrate that epithelial steroid receptors are neither necessary nor sufficient for hormonal regulation of epithelial proliferation. Instead, hormonal regulation of epithelial proliferation is a paracrine event mediated by hormone-receptor-positive stromal cells.

Epithelium stroma mesenchyme estrogen receptor androgen receptor ductal morphogenesis 

Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • G. R. Cunha
    • 1
  • P. Young
    • 1
  • Y. K. Hom
    • 1
  • P. S. Cooke
    • 2
  • J. A. Taylor
    • 3
  • D. B. Lubahn
    • 3
  1. 1.Anatomy Department and Reproductive Endocrinology CenterUniversity of CaliforniaSan Francisco
  2. 2.Department of Veterinary BiosciencesUniversity of IllinoisUrbana
  3. 3.Departments of Biochemistry and Child HealthUniversity of MissouriColumbia

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