Method for sequencing nucleic acids by observing the uptake of nucleotides modified with bulky groups
First Claim
1. An apparatus comprising:
- a) an analysis chamber containing one or more structures;
b) one or more reagent reservoirs in fluid communication with the analysis chamber;
c) a detection unit operably coupled to the structures; and
d) a data processing and control unit.
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Abstract
The present methods and apparatus concern nucleic acid sequencing by incorporation of nucleotides into nucleic acid strands. The incorporation of nucleotides is detected by changes in the mass and/or surface stress of the structure. In some embodiments of the invention, the structure comprises one or more nanoscale or microscale cantilevers. In certain embodiments of the invention, each different type of nucleotide is distinguishably labeled with a bulky group and each incorporated nucleotide is identified by the changes in mass and/or surface stress of the structure upon incorporation of the nucleotide. In alternative embodiments of the invention only one type of nucleotide is exposed at a time to the nucleic acids. Changes in the properties of the structure may be detected by a variety of methods, such as piezoelectric detection, shifts in resonant frequency of the structure, and/or position sensitive photodetection.
75 Citations
22 Claims
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1. An apparatus comprising:
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a) an analysis chamber containing one or more structures;
b) one or more reagent reservoirs in fluid communication with the analysis chamber;
c) a detection unit operably coupled to the structures; and
d) a data processing and control unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising:
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a) an analysis chamber containing at least one cantilever;
b) one or more nucleic acids molecules attached to the at least one cantilever;
c) a detection unit to detect deflection of the at least one cantilever; and
d) a data processing and control unit. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. An apparatus comprising:
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a) an analysis chamber containing at least one cantilever;
b) one or more nucleic acids molecules attached to the at least one cantilever;
c) a piezoresistive resistor embedded at the fixed end of at least one cantilever;
d) a detection unit to detect deflection of the at least one cantilever; and
e) a data processing and control unit. - View Dependent Claims (17, 18, 22)
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19. An apparatus comprising:
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a) an analysis chamber containing at least one cantilever;
b) the at least one cantilever coated with a substance;
c) one or more nucleic acids molecules associated with the at least one cantilever;
d) one or more polymerases in the analysis chamber;
e) a detection unit to detect deflection of the at least one cantilever; and
f) a data processing and control unit. - View Dependent Claims (20, 21)
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Specification