Method and apparatus for detection or identification of DNA
First Claim
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1. A method of detecting target DNA molecules comprising the steps of:
- (a) introducing target DNA molecules into a test element holding RNA molecules complementary to the target DNA molecules;
(b) selectively destroying the RNA molecules that have hybridized with target DNA molecules; and
(c) detecting a loss of RNA molecules caused by the target DNA molecules successively hybridizing with different RNA molecules.
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Abstract
DNA is detected using complementary RNA probes and an enzyme that attacks and hydrolyzes the RNA probes only when it has hybridized with target DNA. A low concentration of target DNA can therefore successively hydrolyze a larger amount of RNA whose loss may then be detected to indirectly determine the presence of the target DNA.
12 Citations
32 Claims
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1. A method of detecting target DNA molecules comprising the steps of:
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(a) introducing target DNA molecules into a test element holding RNA molecules complementary to the target DNA molecules;
(b) selectively destroying the RNA molecules that have hybridized with target DNA molecules; and
(c) detecting a loss of RNA molecules caused by the target DNA molecules successively hybridizing with different RNA molecules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23)
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20. An apparatus for detecting target DNA molecules comprising:
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a test element holding RNA molecules complementary to the target DNA molecules;
a port for introducing target DNA molecules into a test element;
a means for destroying the RNA molecules in the test cell selective to RNA molecules that have hybridized with target DNA molecules; and
a detector sensitive to a loss of RNA molecules caused the target DNA molecules successively hybridizing with different RNA molecules. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification