Nucleic acid concentration quantitative analysis chip, nucleic acid concentration quantitative analysis apparatus, and nucleic acid concentration quantitative analysis method
First Claim
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1. A nucleic acid concentration quantitative analysis chip comprising:
- a plurality of nucleic acid sensors having different sensor areas on which nucleic acid probes each having a nucleic acid complementary to a target nucleic acid are immobilized; and
a first normalization unit which normalizes first detection signals obtained by the nucleic acid sensors with respect to the respective sensor areas.
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Abstract
The present invention includes a plurality of working electrodes on which the same type of nucleic acid probes each having a nucleic acid complementary to a target nucleic acid are immobilized and which have different sensor areas and a normalization circuit which normalizes detection signals obtained by the working electrodes with respect to the respective sensor areas.
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Citations
22 Claims
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1. A nucleic acid concentration quantitative analysis chip comprising:
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a plurality of nucleic acid sensors having different sensor areas on which nucleic acid probes each having a nucleic acid complementary to a target nucleic acid are immobilized; and
a first normalization unit which normalizes first detection signals obtained by the nucleic acid sensors with respect to the respective sensor areas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A nucleic acid concentration quantitative analysis apparatus comprising:
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a plurality of nucleic acid sensors having different sensor areas on which nucleic acid probes each having a nucleic acid complementary to a target nucleic acid are immobilized;
a plurality of background level sensors which have the different sensor areas on which the nucleic acid probes having the nucleic acids complementary to the target nucleic acids are not immobilized;
a first normalization unit which normalizes first detection signals obtained by the nucleic acid sensors with respect to the respective sensor areas;
a second normalization unit which normalizes second detection signals obtained by the background level sensors with respect to the respective sensor areas;
a first current-to-voltage conversion unit which converts a first output signal current of the first normalization unit to a first output voltage;
a second current-to-voltage conversion unit which converts a second output signal current of the second normalization unit to a second output voltage;
an A/D conversion unit which A/D converts the first output voltage to generate first digital data and which A/D converts the second output voltage to generate second digital data; and
a subtraction unit which subtracts the second digital data from the first digital data.
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16. A nucleic acid concentration quantitative analysis apparatus comprising:
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a plurality of nucleic acid sensors having different sensor areas on which nucleic acid probes each having a nucleic acid complementary to a target nucleic acid are immobilized;
a plurality of background level sensors which have the different sensor areas on which the nucleic acid probes having the nucleic acids complementary to the target nucleic acids are not immobilized;
a first normalization unit which normalizes first detection signals obtained by the nucleic acid sensors with respect to the respective sensor areas;
a second normalization unit which normalizes second detection signals obtained by the background level sensors with respect to the respective sensor areas;
a first current-to-voltage conversion unit which converts a first output signal current of the first normalization unit to a first output voltage;
a second current-to-voltage conversion unit which converts a second output signal current of the second normalization unit to a second output voltage;
a subtraction unit which subtracts the second output voltage from the first output voltage; and
an A/D conversion unit which executes A/D conversion of a third output voltage of the subtraction unit.
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17. A nucleic acid concentration quantitative analysis chip comprising:
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a plurality of nucleic acid sensors having different sensor areas on which nucleic acid probes each having a nucleic acid complementary to a target nucleic acid are immobilized;
a plurality of background level sensors which have the different sensor areas on which the nucleic acid probes having the nucleic acids complementary to the target nucleic acids are not immobilized;
a subtraction unit which subtracts a second detection signal of the background level sensor from a first detection signal of the nucleic acid sensor; and
a normalization unit which normalizes a subtraction output signal of the subtraction unit. - View Dependent Claims (18)
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19. A nucleic acid concentration quantitative analysis apparatus comprising:
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a nucleic acid concentration quantitative analysis chip including;
a plurality of nucleic acid sensors having different sensor areas on which nucleic acid probes each having a nucleic acid complementary to a target nucleic acid are immobilized; and
a first normalization unit which normalizes a detection signal of the nucleic acid sensor with respect to the sensor area to output a normalized signal, and a nucleic acid concentration calculation device which calculates a nucleic acid concentration based on the normalized signal. - View Dependent Claims (20, 21)
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22. A nucleic acid concentration quantitative analysis method comprising:
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normalizing detection signals of a plurality of nucleic acid sensors on which nucleic acid probes each having a nucleic acid complementary to a target nucleic acid are immobilized and which have different sensor areas with respect to sensor areas to output a normalized signal; and
calculating a nucleic acid concentration based on the normalized signal.
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Specification