Adrenergic receptor as a proto-oncogene
First Claim
1. An in vitro assay procedure, comprising:
- contacting a test compound to a recombinant cell, the recombinant cell comprising a mammalian host cell containing a heterologous DNA molecule, the heterologous DNA molecule comprising vector DNA and DNA which encodes a mammalian α
1 -adrenergic receptor, wherein said mammalian α
1 -adrenergic receptor is expressed in said host cell, and wherein said recombinant cell undergoes proliferation in response to activation of said mammalian α
1 -adrenergic receptor; and
detecting whether or not said test compound inhibits the proliferation of said recombinant cell.
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Abstract
A recombinant cell comprising a host cell containing a recombinant DNA sequence is disclosed. The recombinant DNA sequence comprises vector DNA and DNA which encodes a mammalian adrenergic receptor. The host cell is one capable of undergoing proliferation in response to activation of the adrenergic receptor. In one specific embodiment of the foregoing, the adrenergic receptor includes a mutation in the third cytoplasmic loop thereof which renders the adrenergic receptor constitutively active, and the host cell undergoes proliferation in response to the constitutively active adrenergic receptor. Also disclosed are in vitro assays employing the foregoing which are useful for screening test compounds for antitumor and antiatherogenic activity, along with a diagnostic assay for detecting the oncogenic activation of cells in a patient. The diagnostic assay comprises collecting sample cells which express adrenergic receptors from the patient, and then detecting the presence or absence of a mutation in the adrenergic receptor which renders the receptor constitutively active. The presence of such a mutation indicates the oncogenic activation of the cells.
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Citations
8 Claims
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1. An in vitro assay procedure, comprising:
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contacting a test compound to a recombinant cell, the recombinant cell comprising a mammalian host cell containing a heterologous DNA molecule, the heterologous DNA molecule comprising vector DNA and DNA which encodes a mammalian α
1 -adrenergic receptor, wherein said mammalian α
1 -adrenergic receptor is expressed in said host cell, and wherein said recombinant cell undergoes proliferation in response to activation of said mammalian α
1 -adrenergic receptor; anddetecting whether or not said test compound inhibits the proliferation of said recombinant cell. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An in vitro assay procedure, comprising:
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contacting a test compound to a recombinant cell grown as a monolayer in in vitro culture, the recombinant cell comprising a mammalian fibroblast host cell containing a heterologous DNA molecule, the heterologous DNA molecule comprising vector DNA and DNA which encodes a mammalian α
1 -adrenergic receptor, wherein said mammalian α
1 -adrenergic receptor is expressed in said host cell, and wherein said recombinant cell undergoes proliferation in response to activation of said mammalian α
1 -adrenergic receptor; anddetecting whether or not said test compound inhibits the proliferation of said recombinant cell. - View Dependent Claims (8)
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Specification