Abstract

Screening by differential display of oestrogen-sensitive MCF7 human breast cancer cells grown in the short-term (6 days) and long-term (70 weeks) absence of oestrogen has led to the identification of a new oestrogen-regulated mRNA. The cDNA isolated by differential display has 100% homology from nucleotides 615 to 859 of the published sequence for the mRNA for human megakaryocyte CD63 antigen but has a 3' tail extended by 23 nucleotides. Northern blotting has confirmed that this mRNA is regulated by oestrogen in both MCF7 and T47D human breast cancer cell lines.

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