BIOCATALYTIC METHODS FOR SYNTHESIZING AND IDENTIFYING BIOLOGICALLY ACTIVE COMPOUNDS
First Claim
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1. A method for drug identification comprising:
- (a) conducting a series of biocatalytic reactions by mixing biocatalysts with a starting compound to produce a reaction mixture and thereafter a library of modified starting compounds;
(b) testing the library of modified starting compounds to determine if a modified starting compound is present within the library which exhibits a desired activity;
(c) identifying the specific biocatalytic reactions which produce the modified starting compound of desired activity by systematically eliminating each of the biocatalytic reactions used to produce a portion of the library and testing the compounds produced in the portion of the library for the presence or absence of the modified starting compound with the desired activity; and
(d) repeating the specific biocatalytic reactions which produce the modified compound of desired activity and determining the chemical composition of the reaction product.
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Abstract
This invention encompasses methods for producing a library of modified starting compounds by use of biocatalytic reactions on a starting compound and identifying the modified starting compound with the optimum desired activity. The method is useful in producing modified pharmaceutical compounds with desired specific activity.
53 Citations
17 Claims
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1. A method for drug identification comprising:
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(a) conducting a series of biocatalytic reactions by mixing biocatalysts with a starting compound to produce a reaction mixture and thereafter a library of modified starting compounds;
(b) testing the library of modified starting compounds to determine if a modified starting compound is present within the library which exhibits a desired activity;
(c) identifying the specific biocatalytic reactions which produce the modified starting compound of desired activity by systematically eliminating each of the biocatalytic reactions used to produce a portion of the library and testing the compounds produced in the portion of the library for the presence or absence of the modified starting compound with the desired activity; and
(d) repeating the specific biocatalytic reactions which produce the modified compound of desired activity and determining the chemical composition of the reaction product. - View Dependent Claims (2, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17)
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3. A method for drug identification comprising:
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(a) conducting a series of biocatalytic reactions on a starting compound to produce a library of modified starting compounds;
(b) providing a high affinity receptor for a starting compound of desired activity and exposing the modified compounds formed after each biocatalytic reaction to the high affinity receptor;
(c) isolating the high affinity receptor-modified starting compound complex from the biocatalytic reaction mixture;
(d) dissociating the complex into its component parts; and
(e) determining the chemical composition of the dissociated modified starting compound.
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4. A method for drug identification comprising:
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(a) adding a high affinity receptor to a starting compound to form a biocatalytic reaction mixture at a concentration that allows for essentially all of the high affinity receptor to bind with the starting compound and about an equal molar amount of starting compound remaining free in solution and available for biocatalytic modification;
(b) producing a modified starting compound exhibiting a higher binding affinity than the starting compound resulting in the displacement of the starting compound from the high affinity receptor;
(c) forming a complex of the modified starting compound and the high affinity receptor, thereby protecting the modified starting compound from further biocatalytic reaction;
(d) isolating the complex from the biocatalytic reaction mixture;
(e) dissociating the complex into its component parts;
(f) determining the chemical composition of the dissociated modified starting compound; and
(g) repeating steps (a) through (b) to produce a library of modified starting compounds. - View Dependent Claims (5)
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13. A method for rapid drug development comprising:
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(a) mixing a starting drug compound with a high affinity receptor at approximately one half the molar concentration of the starting drug compound to allow essentially all of the high affinity receptor to bind to the starting drug compound and leave an equal molar amount of starting drug compound free in solution and available for biocatalytic modification;
(b) producing a modified drug compound from the biocatalytic reaction between the starting drug compound and the receptor, the modified drug compound having a higher binding affinity than the starting drug compound;
(c) displacing the starting drug compound from the receptor with the modified drug compound;
(d) protecting the bound modified drug compound from further biocatalytic reactions;
(e) dissociating the complex of the modified drug compound and receptor into its component parts;
(f) determining the chemical composition of the dissociated modified starting drug compound; and
(g) repeating steps a) through e) and thus conduct a series of biocatalytic reactions on a starting drug compound to produce a library of modified drug compounds with higher binding affinities.
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Specification