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    Mol Cell Endocrinol. 1988 Oct;59(3):205-12.

    Effects of oestrogen on the expression of a 4.4 kb mRNA in the ZR-75-1 human breast cancer cell line.

    Manning DL, Daly RJ, Lord PG, Kelly KF, Green CD.

    Department of Biochemistry, University of Liverpool, U.K.

    A cDNA library has been constructed from the poly(A)+ mRNA of oestrogen-stimulated ZR-75-1 human breast cancer cells. Screening by differential hybridization has identified eight clones which are stimulated between 4- and 16-fold by oestrogen. Two clones (pLIV-1) that are stimulated 4-fold, hybridize to three different mRNA species. A further five recombinants encode for a mRNA 600 bp long which is induced greater than 16-fold and have been shown to cross-hybridize to the oestrogen-responsive clone, pS2, isolated from the MCF-7 breast cancer cell line. Oestradiol was shown to be without detectable effect upon the expression of mRNA for dihydrofolate reductase, which is reported to be oestrogen regulated in MCF-7 cells. Actin gene expression is also unresponsive to oestradiol in ZR-75-1 cells. These results suggest that pLIV-1 represents a previously unidentified mRNA that may be involved in the oestrogen-regulated growth of ZR-75-1 human breast cancer cells.

    PMID: 2903103 [PubMed - indexed for MEDLINE]

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