Abstract
We have previously provided evidence that an autocrine loop involving vasopressin is present in perhaps all breast cancers. This study now shows MCF-7 breast cancer cells express mRNAs for all currently recognized vasopressin receptor subtypes (V1a, V1b, and V2). Cloning and DNA sequencing over the entire open reading frame of each mRNA revealed that normal sequences representing each receptor were present. However, in addition, an abnormal mRNA for the V2 receptor, expected to give rise to a truncated 'diabetic' protein, was also expressed. Western analysis revealed that all three normal mRNAs gave rise to proteins of sizes compatible with them being functional receptors. The abnormal V2 receptor mRNA also gave rise to proteins.
Publication types
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Base Sequence
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Breast Neoplasms / genetics*
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Breast Neoplasms / metabolism*
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Cloning, Molecular
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DNA Primers / genetics
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DNA, Neoplasm / genetics
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Female
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Humans
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Molecular Sequence Data
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RNA, Messenger / genetics
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RNA, Messenger / metabolism
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RNA, Neoplasm / genetics
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RNA, Neoplasm / metabolism
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Receptors, Vasopressin / biosynthesis
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Receptors, Vasopressin / chemistry
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Receptors, Vasopressin / genetics*
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Reverse Transcriptase Polymerase Chain Reaction
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Tumor Cells, Cultured
Substances
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DNA Primers
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DNA, Neoplasm
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RNA, Messenger
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RNA, Neoplasm
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Receptors, Vasopressin
Associated data
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GENBANK/AF101725
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GENBANK/AF101726
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GENBANK/AF101727
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GENBANK/AF101728