Human breast carcinoma (ZR-75-1) serially transplanted into nude mice-with reference to estradiol dependency and sensitivity to tamoxifen

Tetsuro Kubota, Shoichi Oka, Toshiaki Utsumi, So Inoue, Masahiko Kuzuoka, Akihiko Suto, Yoshito Arisawa, Kyuya Ishibiki, Osahiko Abe

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Tumor cells of the ZR-75-1 line (1×107 in 0.5 ml) were inoculated into the right thigh muscles of BALB/c female nude mice which were, at the same time, given 1.0 mg of estradiol subcutaneously. After the transferable strain had been established, the tumors were then transplanted into female and male nude mice either with or without estradiol treatment. Although no exponential tumor growth was observed in the untreated male and female nude mice, no complete rejection was found during the experiments. The estrogen receptor of this strain was positive and the growth of ZR-75-1 was dependent on exogenous estradiol. ZR-75-1 in the nude mouse was insensitive to tamoxifen treatment, given as 5 mg/kg intramuscularly twice a week, suggesting that dependency on estradiol is not necessarily correlated with endocrine sensitivity to tamoxifen.

Original languageEnglish
Pages (from-to)446-451
Number of pages6
JournalThe Japanese Journal of Surgery
Volume19
Issue number4
DOIs
Publication statusPublished - 01-07-1989
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Surgery

Fingerprint Dive into the research topics of 'Human breast carcinoma (ZR-75-1) serially transplanted into nude mice-with reference to estradiol dependency and sensitivity to tamoxifen'. Together they form a unique fingerprint.

Cite this