Diet-gene interactions in estrogen-induced mammary carcinogenesis in the ACI rat

D. M E Harvell, T. E. Strecker, B. Xie, L. K. Buckles, M. Tochacek, Rodney D McComb, J. D. Shull

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

It is well accepted that hormonal, dietary and genetic factors each influence breast cancer risk. However, the underlying mechanisms and the extent to which these factors interact are largely unknown. We have demonstrated that the female ACI rat exhibits a unique genetically conferred propensity to develop mammary cancers when treated with physiological levels of 17β-estradiol (E2). More recently, we have mapped to rat chromosome 5 a strong genetic modifier of susceptibility to E2-induced mammary cancers, termed estrogen-induced mammary cancer 1 (Emca1), and have identified potential Emca1 candidate genes. Because estrogens have been inextricably linked to the genesis of breast cancer in humans, the ACI rat model has the potential to reveal novel physiologically relevant insights into how the contributory actions of E2 are modified by specific dietary factors. In the present study, we have examined the ability of a 40% restriction of dietary energy consumption to inhibit E2-induced mammary carcinogenesis. The hypothesis tested was that energy restriction will inhibit mammary carcinogenesis even when circulating E2 remains elevated through administration of exogenous hormone. The data presented herein strongly suggest that energy restriction inhibits E2-induced mammary carcinogenesis in the ACI rat at least partly by retarding progression of atypical hyperplastic foci to carcinoma.

Original languageEnglish (US)
Pages (from-to)3087S-3091S
JournalJournal of Nutrition
Volume131
Issue number11 SUPPL.
StatePublished - Nov 29 2001

Fingerprint

Inbred ACI Rats
gene interaction
carcinogenesis
estrogens
breasts
Estrogens
Carcinogenesis
Breast
Breast Neoplasms
Diet
rats
diet
Genes
neoplasms
breast neoplasms
Chromosomes, Human, Pair 5
dietary restriction
Genetic Predisposition to Disease
modifiers (genes)
energy

Keywords

  • ACI rat
  • Energy restriction
  • Estrogen
  • Mammary cancer
  • Pituitary

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

Cite this

Harvell, D. M. E., Strecker, T. E., Xie, B., Buckles, L. K., Tochacek, M., McComb, R. D., & Shull, J. D. (2001). Diet-gene interactions in estrogen-induced mammary carcinogenesis in the ACI rat. Journal of Nutrition, 131(11 SUPPL.), 3087S-3091S.

Diet-gene interactions in estrogen-induced mammary carcinogenesis in the ACI rat. / Harvell, D. M E; Strecker, T. E.; Xie, B.; Buckles, L. K.; Tochacek, M.; McComb, Rodney D; Shull, J. D.

In: Journal of Nutrition, Vol. 131, No. 11 SUPPL., 29.11.2001, p. 3087S-3091S.

Research output: Contribution to journalArticle

Harvell, DME, Strecker, TE, Xie, B, Buckles, LK, Tochacek, M, McComb, RD & Shull, JD 2001, 'Diet-gene interactions in estrogen-induced mammary carcinogenesis in the ACI rat', Journal of Nutrition, vol. 131, no. 11 SUPPL., pp. 3087S-3091S.
Harvell DME, Strecker TE, Xie B, Buckles LK, Tochacek M, McComb RD et al. Diet-gene interactions in estrogen-induced mammary carcinogenesis in the ACI rat. Journal of Nutrition. 2001 Nov 29;131(11 SUPPL.):3087S-3091S.
Harvell, D. M E ; Strecker, T. E. ; Xie, B. ; Buckles, L. K. ; Tochacek, M. ; McComb, Rodney D ; Shull, J. D. / Diet-gene interactions in estrogen-induced mammary carcinogenesis in the ACI rat. In: Journal of Nutrition. 2001 ; Vol. 131, No. 11 SUPPL. pp. 3087S-3091S.
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