Apparatus and method for modification of magnetically immobilized biomolecules
First Claim
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1. A method for modifying a biomolecule, comprising:
- a) immobilizing a biomolecule bound to a magnetic particle on a magnetic separation apparatus by applying a magnetic field to a magnetizable matrix in the column; and
b) modifying the immobilized biomolecule, wherein the modification is conducted at a temperature that is suitable for modification.
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Abstract
The invention provides an apparatus and method for modification of magnetically immobilized biomolecules, particularly for temperature-controlled modifications.
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Citations
65 Claims
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1. A method for modifying a biomolecule, comprising:
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a) immobilizing a biomolecule bound to a magnetic particle on a magnetic separation apparatus by applying a magnetic field to a magnetizable matrix in the column; and
b) modifying the immobilized biomolecule, wherein the modification is conducted at a temperature that is suitable for modification. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of synthesizing a nucleic acid molecule, comprising:
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a) immobilizing a biomolecule bound to a magnetic particle on a magnetic separation apparatus by applying a magnetic field to a magnetizable matrix in the column, wherein the immobilized biomolecule comprises a polynucleotide and wherein the magnetic particle contains bound thereto an oligonucleotide that is complementary to a portion of the immobilized biomolecule and that serves as a primer for synthesis of a nucleic acid;
b) contacting the immobilized polynucleotide with an enzyme that can synthesize a nucleic acid molecule, in the presence of deoxynucleotides, wherein the apparatus is maintained for a period of time at a temperature at which the enzyme exhibits at least 10% of its maximal activity; and
c) synthesizing a nucleic acid molecule, using the immobilized polynucleotide as a template. - View Dependent Claims (15, 16, 17)
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18. A method of synthesizing a nucleic acid molecule, comprising:
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a) immobilizing a biomolecule bound to a magnetic particle on a magnetic separation apparatus by applying a magnetic field to a magnetizable matrix in the column, wherein the immobilized biomolecule comprises a polynucleotide;
b) contacting the immobilized polynucleotide with a first oligonucleotide primer and an enzyme that can synthesize a nucleic acid molecule, in the presence of deoxynucleotides, wherein the apparatus is maintained for a period of time at which the enzyme exhibits at least 10% of its maximal activity; and
c) synthesizing a nucleic acid molecule, using the immobilized polynucleotide as a template. - View Dependent Claims (19, 20, 21)
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22. A method of synthesizing a nucleic acid molecule, comprising:
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a) immobilizing a biomolecule bound to a magnetic particle on a magnetic separation apparatus by applying a magnetic field to a magnetizable matrix in the column, wherein the immobilized biomolecule comprises a polynucleotide comprising a poly(A) tract and the magnetic particle is bound to an oligo-dT molecule of from about 6 nucleotides to about 30 nucleotides;
b) contacting the immobilized polynucleotide with an enzyme that can synthesize a nucleic acid molecule, in the presence of deoxynucleotides, wherein the apparatus is maintained for a period of time at a temperature at which the enzyme exhibits at least 10% of its maximal activity; and
c) synthesizing a nucleic acid molecule, using the immobilized polynucleotide as a template. - View Dependent Claims (23, 24, 25)
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26. A system for immobilizing and modifying biomolecules, comprising:
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at least one separation chamber;
a wettable, flow through heat conducting matrix contained in each said separation chamber; and
a controllable heat source thermally coupled to each said separation chamber. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A separation unit for immobilizing and modifying biomolecules, comprising:
a magnetic yoke having at least one notch formed therein;
a pair of magnets placed within each of said at least one notch to form a gap therebetween, said gap being adapted to receive a separation chamber therein; and
a controllable heat source thermally coupled to each said pair of magnets. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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59. A separation unit for immobilizing and modifying biomolecules, comprising:
a magnetic yoke having at least one notch formed therein;
a pair of magnets placed within each of said at least one notch to form a gap therebetween, said gap being adapted to receive a separation chamber therein; and
a controllable cooling source thermally coupled to each said pair of magnets.
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60. An external temperature regulating unit adapted to interface with an HGMS separation unit, said regulating unit comprising:
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a base portion;
finger elements extending from said base portion and adapted to fit within slots in the HGMS separation unit which hold separation columns; and
a controllable heating element at an end of each said finger element, adapted to apply a controlled amount of heat to the separation column in the gap, respectively. - View Dependent Claims (61, 62, 63, 64, 65)
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Specification