DNA sequence recognition
First Claim
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18. A DNA detection apparatus, comprising:
- a sensor with a surface forming an electrode;
a single strand probe DNA base sequence having one end bonded to an electrode and another end linked to an entity selected from the group consisting of a fullerene molecule, a nanoparticle, and a redox-active molecule; and
a detector for detecting current flowing through the DNA base sequence upon hybridization.
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Abstract
To detect the presence of a match of a target DNA base sequence with a probe DNA base sequence, a single strand of the probe DNA base sequence is prepared. One end of the single strand probe DNA base sequence is linked to an electrode and the other end to a nano entity capable of exchanging charge with the DNA base sequence. The single strand of the target DNA base sequence is brought into contact with the single strand of the probe DNA base sequence, and the change in the physical properties of the probe DNA base sequence upon hybridization detected.
30 Citations
26 Claims
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18. A DNA detection apparatus, comprising:
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a sensor with a surface forming an electrode;
a single strand probe DNA base sequence having one end bonded to an electrode and another end linked to an entity selected from the group consisting of a fullerene molecule, a nanoparticle, and a redox-active molecule; and
a detector for detecting current flowing through the DNA base sequence upon hybridization. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24)
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22-1. An apparatus as claimed in any one of claims 18 to 21, further comprising an intercalator for said DNA base sequence.
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25. A method of detecting the presence of a match of a target DNA base sequence with a probe DNA base sequence, comprising:
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preparing at least first and second single strands of the probe DNA base sequence;
linking one end of each of said first and second single strands of probe DNA base through a nano entity capable of exchanging charge with the DNA base sequence to create a nanoshuttle;
bringing a single strand of the target DNA base sequence into contact with at least one of the single strands of the probe DNA base sequence; and
detecting a change in a physical property of said probe DNA base sequence due to hybridization in the event of a match of and said target DNA base sequence. - View Dependent Claims (26)
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Specification