Abstract
Langdon and coworkers (1990) have characterized a series of estrogen receptor (ER)-positive and ER-negative human ovarian carcinoma cell lines. Previous studies have demonstrated that TCDD exhibits a broad spectrum of antiestrogenic activities in ER-positive human breast cancer cell lines. Studies in this laboratory have shown that after treatment with 10 nM [ 3H]TCDD, specifically-bound aryl hydrocarbon (Ah) receptor complexes were identified in the cytosolic and nuclear fractions of the ER-positive PE01, PE04 and PE06 human ovarian carcinoma cell lines. Preliminary studies indicate that the molecular properties of the nuclear and cytosolic Ah receptor complexes in the ovarian carcinoma cells were similar to those reported for the Ah receptor from other human tissues and cells. The effects of TCDD on cytochrome P-4501A1 and the growth of these cell lines will be discussed.
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