Method for distinguishing normal and cancer cells
First Claim
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1. A method to distinguish between normal and transformed or malignant cells by determining the presence or absence of exposed nuclear DNA in mammalian cells, said method comprising the following steps:
- (a) reacting mammalian cells with a reaction mixture comprising DNA polymerase I, DNase I, and at least one member selected from the group consisting of the nucleotides dATP, dCTP, dGTP, dTTP and dUTP, at least one of said nucleotides being labeled, to produce reacted cells;
(b) detecting the presence or absence of labeled nucleotides incorporated in exposed DNA in said reacted cells; and
(c) diagnosing for the presence or absence of transformed or malignant cells in said reacted cells, wherein said diagnosing comprises examining the extent and pattern of labelled DNA and comparing said reacted cells with normal cells and cancer cells.
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Abstract
A method of electing the presence or absence of exposed nuclear DNA is described. Cells are reacted with a reaction composition comprising DNA polymerase I, DNase I, and the nucleotides dATP, dCTP, dGTP, and dTTP or dUTP, at least one of said nucleotides being biotin labeled. Biotin labeled nucleotides incorporated in exposed DNA are detected. Also described is a kit useful for detecting the presence or absence of exposed DNA in cells.
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Citations
20 Claims
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1. A method to distinguish between normal and transformed or malignant cells by determining the presence or absence of exposed nuclear DNA in mammalian cells, said method comprising the following steps:
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(a) reacting mammalian cells with a reaction mixture comprising DNA polymerase I, DNase I, and at least one member selected from the group consisting of the nucleotides dATP, dCTP, dGTP, dTTP and dUTP, at least one of said nucleotides being labeled, to produce reacted cells; (b) detecting the presence or absence of labeled nucleotides incorporated in exposed DNA in said reacted cells; and (c) diagnosing for the presence or absence of transformed or malignant cells in said reacted cells, wherein said diagnosing comprises examining the extent and pattern of labelled DNA and comparing said reacted cells with normal cells and cancer cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification