CONTROL OF CHEMICAL MODIFICATION
First Claim
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1. A method for controlling the degree of labeling (DOL) of a carrier molecule or solid support, wherein the method comprises:
- a) contacting the carrier molecule or solid support with a reactive label to form a labeling solution;
b) contacting the labeling solution with a reactive label competitor to form a controlled labeling solution; and
c) incubating the controlled labeling solution for an appropriate amount of time whereby the degree of labeling of the carrier molecule or solid support is controlled.
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Abstract
Provided is a method for controlling the degree of labeling (DOL) of a carrier molecule or solid support by the addition of a reactive label competitor to the labeling reaction. When the reactive label competitor is added to the labeling solution the competitor competes with the carrier molecule or solid support for the label, reducing the number of labels available to conjugates to the carrier molecule or solid support. This provides for a facile method that predictably alters the DOL of a carrier molecule or solid support.
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Citations
34 Claims
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1. A method for controlling the degree of labeling (DOL) of a carrier molecule or solid support, wherein the method comprises:
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a) contacting the carrier molecule or solid support with a reactive label to form a labeling solution; b) contacting the labeling solution with a reactive label competitor to form a controlled labeling solution; and c) incubating the controlled labeling solution for an appropriate amount of time whereby the degree of labeling of the carrier molecule or solid support is controlled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 30)
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25. A method of modulating the amount of reactive label present in a solution, said method comprising:
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a) contacting a solution comprising a carrier molecule or solid support with a reactive label to form a labeled carrier molecule or labeled solid support; and b) contacting the solution with a reactive label competitor to form a labeled competitor; wherein the amount of reactive label in the solution is attenuated or eliminated after contacting the reactive label with the reactive label competitor. - View Dependent Claims (26, 27, 28, 29, 31)
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32. A method for monitoring the degree of labeling (DOL) of a carrier molecule or solid support, said method comprising:
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a) contacting a solution comprising a carrier molecule or solid support with a reactive label to form a labeled carrier molecule or labeled solid support; and b) contacting the solution with a reactive label competitor to form a labeled competitor, wherein the reactive label competitor quenches or is capable of FRET interaction with the reactive label; wherein the degree of labeling (DOL) is monitored by the amount of quenching or FRET by the reactive label competitor.
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33. A kit for controlling the degree of labeling (DOL) of a carrier molecule or solid support, wherein the kit comprises:
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a) carrier molecule or solid support; b) a reactive label; c) a reactive label competitor; and d) instructions for performing a method resulting in the controlled degree of labeling of the carrier molecule or solid support. - View Dependent Claims (34)
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Specification