Methods and compositions for performing molecular separations
First Claim
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1. A method of separating macromolecules by capillary electrophoresis, comprising:
- providing a substrate comprising at least a first capillary channel disposed therein, a surface of the channel having a first surface charge associated therewith;
filling said capillary channel with a water soluble hydrophilic polymer having a charge in solution that is the same as the first surface charge;
introducing a sample containing the macromolecules into one end of the capillary channel and;
applying a voltage gradient across the length of the capillary channel, whereby the macromolecules in the sample are separated in the capillary channel.
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Abstract
The present invention provides methods of electrophoretically separating macromolecular species, as well as compositions and systems useful in carrying out such methods. Specifically, the methods of the present invention comprise providing a substrate that has at least a first capillary channel disposed therein. The surface of the channel has a first surface charge associated therewith, and is filled with a water soluble surface adsorbing polymer solution that bears a net charge that is the same as the charge on the capillary surface.
30 Citations
44 Claims
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1. A method of separating macromolecules by capillary electrophoresis, comprising:
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providing a substrate comprising at least a first capillary channel disposed therein, a surface of the channel having a first surface charge associated therewith;
filling said capillary channel with a water soluble hydrophilic polymer having a charge in solution that is the same as the first surface charge;
introducing a sample containing the macromolecules into one end of the capillary channel and;
applying a voltage gradient across the length of the capillary channel, whereby the macromolecules in the sample are separated in the capillary channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of separating macromolecules by capillary electrophoresis, comprising:
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providing a substrate having a capillary channel disposed therein, a surface of the channel having a negative surface charge associated therewith;
filling said capillary channel with a water soluble hydrophilic polymer having a net charge, the charge being the same as the surface charge;
introducing a sample containing the macromolecules into one end of the capillary channel; and
applying a voltage gradient across the length of the capillary channel, whereby the macromolecules in the sample are separated in the capillary channel. - View Dependent Claims (21, 22, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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23. A method of preparing a capillary channel for use in separating macromolecules, comprising:
filling the capillary channel with a polymer solution, wherein the polymer has a net charge that is the same as a net charge associated with interior surfaces of the capillary channel.
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24. A system for separating macromolecules by capillary electrophoresis, comprising:
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a substrate having at least a first capillary channel disposed therein, the channel having a net surface charge associated with interior surfaces of the channel;
a polymer disposed in the capillary channel, the polymer having a net charge, the net charge being the same as the net surface charge.
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41. A system for separating nucleic acids by molecular weight, comprising:
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a substrate having a capillary channel disposed therein, the channel having a charge associated with interior surfaces of the channel; and
a polymer disposed in the capillary channel, the polymer having a net charge, the net charge being the same as the net surface charge. - View Dependent Claims (42, 43)
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44. A capillary for separating macromolecules by capillary electrophoresis, comprising:
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a capillary channel disposed in a substrate, interior surface of the capillary having a first net surface charge associated therewith; and
a polymer disposed in the capillary channel, the polymer having a net charge, the net charge being the same as the first net surface charge.
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Specification