Methods for synthetic unrandomization of oligomer fragments
First Claim
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1. A method for determining an oligonucleotide having an assayable activity for a target molecule comprising the steps of:
- (a) preparing a group of sets of oligonucleotides of substantially the same length, each oligonucleotide comprising at least three nucleotide, by;
(i) defining a common position in the oligonucleotides of the sets, and(ii) synthesizing said sets of oligonucleotides such that each set has a different nucleotide in said common position, the nucleotides which are not in said common position being randomized;
(b) assaying each of the sets for activity against the target molecule;
(c) selecting the set having the highest activity;
(d) preparing a further group of sets of oligonucleotides of said substantially same length, each of the sets of said further group having in the previously defined common position the nucleotide appearing in that position in the set selected in step (c), and having in an additional defined common position a different nucleotide, the nucleotides in the positions of the oligonucleotides which are not in a defined common position being randomized;
(e) assaying each of the sets of said further group for said assayable activity;
(f) selecting the set of said further group having the highest assayable activity; and
(g) repeating steps (d) through (f) until an oligonucleotide having said assayable activity for said target molecule is determined.
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Abstract
Methods useful for the determination of oligomers which have specific activity for a target molecule from a pool of primarily randomly assembled oligomers are provided. The disclosed methods involve repeated syntheses of increasingly simplified sets of oligomers coupled with selection procedures for determining oligomers having the highest activity. Freedom from the use of enzymes allows the application of these methods to any molecules which can be oligomerized in a controlled fashion.
16 Citations
80 Claims
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1. A method for determining an oligonucleotide having an assayable activity for a target molecule comprising the steps of:
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(a) preparing a group of sets of oligonucleotides of substantially the same length, each oligonucleotide comprising at least three nucleotide, by; (i) defining a common position in the oligonucleotides of the sets, and (ii) synthesizing said sets of oligonucleotides such that each set has a different nucleotide in said common position, the nucleotides which are not in said common position being randomized; (b) assaying each of the sets for activity against the target molecule; (c) selecting the set having the highest activity; (d) preparing a further group of sets of oligonucleotides of said substantially same length, each of the sets of said further group having in the previously defined common position the nucleotide appearing in that position in the set selected in step (c), and having in an additional defined common position a different nucleotide, the nucleotides in the positions of the oligonucleotides which are not in a defined common position being randomized; (e) assaying each of the sets of said further group for said assayable activity; (f) selecting the set of said further group having the highest assayable activity; and (g) repeating steps (d) through (f) until an oligonucleotide having said assayable activity for said target molecule is determined. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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3. The method of claim 3 wherein steps (i) through (k) are performed iteratively until no additional oligonucleotides having an increase in said assayable activity is identified.
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27. A method for determining an oligonucleotide having an assayable activity for a target molecule comprising the steps of:
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(a) binding a group of target molecules to a solid support; (b) incubating the solid support with a group of oligonucleotides nucleotides labeled with a detectable label having all positions randomized, under binding conditions; (c) detecting the presence or absence of binding wherein binding of an oligonucleotide indicates activity of the oligonucleotide for one or more target molecules, thereby identifying selected target molecules; (d) preparing a group of sets of oligonucleotides of substantially the same length, each oligonucleotide comprising at least three nucleotides, by; (i) defining a common position in the oligonucleotides of the sets, and (ii) synthesizing said sets of oligonucleotides such that each set has a different nucleotide in said common position, the nucleotides which are not in said common position being randomized; (e) assaying each of the sets for activity against said selected target molecules; (f) selecting the set having the highest activity; (g) preparing a further group of sets of oligonucleotides of said substantially same length, each of the sets of said further group having in the previously defined common position the nucleotide appearing in that position in the set selected in step (f), and having in an additional defined common position a different nucleotide, the nucleotides in the positions of the oligonucleotides which are not in a defined common position being randomized; (h) assaying each of the sets of said further group for said assayable activity for said selected target molecules; (i) selecting the set of said further group having the highest activity; and (j) repeating steps (g) through (i) until an oligonucleotide having an assayable activity for a target molecule is determined. - View Dependent Claims (28)
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29. A method for determining an oligonucleotide cassette having an assayable activity for a target molecule comprising the steps of:
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(a) preparing a group of sets of oligonucleotides of substantially the same length, each oligonucleotide comprising at least three nucleotides, by; (i) defining a common position in the oligonucleotides of the sets, and (ii) synthesizing said sets of oligonucleotides such that each set has a different nucleotide in said common position, the nucleotides which are not in said common position being randomized; (b) assaying each of the sets for activity against the target molecule; (c) selecting the set having the highest activity; (d) preparing a further group of sets of oligonucleotides of said substantially same length, each of the sets of said further group having in the previously defined common position the nucleotide appearing in that position in the set selected in step (c), each set of said further group of sets having a different nucleotide in an additional defined common position, the nucleotides in the positions of the oligonucleotides which are not in a defined common position being randomized; (e) assaying each of the sets of said further group for specific activity for the target molecule; (f) selecting the set of said further group having the highest activity; and (g) repeating steps (d) through (f) until an oligonucleotide cassette having said assayable activity for said target molecule is determined. - View Dependent Claims (30)
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31. A method for determining an oligonucleotide having an assayable activity for a target molecule comprising the steps of:
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(a) preparing a group of sets of oligonucleotides of substantially the same length, each oligonucleotide comprising at least one predefined oligonucleotide cassette and at least one flanking region by; (i) defining a common position in said flanking region of the oligonucleotides of the sets, and (ii) synthesizing said sets of oligonucleotides such that each set has a different nucleotide in said common position, the nucleotides of said flanking region which are not in said common position being randomized; (b) assaying each of the sets for activity against the target molecule; (c) selecting the set having the highest activity; (d) preparing a further group of sets of oligonucleotides of said substantially same length, each of the sets of said further group having in the previously defined common position the nucleotide appearing in that position in the set selected in step (c), each set of said further group of sets having a different nucleotide in an additional defined common position, the nucleotides in the positions of the oligonucleotides which are not in a defined position being randomized; (e) assaying each of the sets of said further group for said assayable activity; (f) selecting the set of said further group having the highest activity; (g) repeating steps (d) through (f) until an oligonucleotide having said assayable activity for said target molecule is determined. - View Dependent Claims (32, 33)
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34. A method of determining an optimal set of monomers for oligomers having an assayable activity for a target molecule comprising:
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(a) preparing a group of sets of oligomers of substantially the same length, each oligomer comprising at least three monomer units, by; (i) selecting a group of monomer units, and (ii) synthesizing sets of randomized oligomers, each set of randomized oligomers using all but at least one defined monomer unit from said group of monomer units, said excluded monomer unit being different for each set of oligomers; (b) assaying each of the sets for activity against the target molecule; (c) identifying each set of oligomers which expresses little or no activity against the target molecule; (d) selecting monomers for inclusion in said optimal set wherein each defined monomer unit excluded from the sets identified in step (c) are selected. - View Dependent Claims (35, 36, 37, 38, 39, 40)
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41. A method for determining an oligonucleotide having an assayable activity for a non-antibody target molecule comprising the steps of:
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(a) preparing a group of sets of oligonucleotides of substantially the same length, each oligonucleotide comprising at least three nucleotides, by; (i) defining a common position in the oligonucleotides of the sets, and (ii) synthesizing said sets of oligonucleotides such that each set has a different nucleotide in said common position, the nucleotides which are not in said common position being randomized; (b) assaying each of the sets for activity against the target molecule; (c) selecting the set having the highest activity; (d) preparing a further group of sets of oligonucleotides of said substantially same length, each of the sets of said further group having in the previously defined common position the nucleotide appearing in that position in the set selected in step (c), and having in an additional defined common position a different nucleotide, the nucleotides in the positions of the oligonucleotides which are not in a defined common position being randomized; (e) assaying each of the sets of said further group for said assayable activity; (f) selecting the set of said further group having the highest assayable activity; and (g) repeating steps (d) through (f) until an oligonucleotide having said assayable activity for said target molecule is determined. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. A method for determining an oligonucleotide having an assayable activity for a non-antibody target molecule comprising the steps of:
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(a) binding a group of target molecules to a solid support; (b) incubating the solid support with a group of oligonucleotides labeled with a detectable label having all positions randomized, under binding conditions; (c) detecting the presence or absence of binding wherein binding of an oligonucleotide indicates activity of the oligonucleotide for one or more target molecules, thereby identifying selected target molecules; (d) preparing a group of sets of oligonucleotides of substantially the same length, each oligonucleotide comprising at least three nucleotides, by; (i) defining a common position in the oligonucleotides of the sets, and (ii) synthesizing said sets of oligonucleotides such that each set has a different nucleotide in said common position, the nucleotides which are not in said common position being randomized; (e) assaying each of the sets for activity against said target molecules; (f) selecting the set having the highest activity; (g) preparing a further group of sets of oligonucleotides of said substantially same length, each of the sets of said further group having in the previously defined common position the nucleotide appearing in that position in the set selected in step (f), and having in an additional defined common position a different nucleotide, the nucleotides in the positions of the oligonucleotides which are not in a defined common position being randomized; (h) assaying each of the sets of said further group for said assayable activity for said selected target molecules; (i) selecting the set of said further group having the highest activity; and (j) repeating steps (g) through (i) until an oligonucleotide having said assayable activity for a target molecule is determined. - View Dependent Claims (68)
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69. A method for determining an oligonucleotide cassette having an assayable activity for a non-antibody target molecule comprising the steps of:
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(a) preparing a group of sets of oligonucleotides of substantially the same length, each oligonucleotide comprising at least three nucleotides, by; (i) defining a common position in the oligonucleotides of the sets, and (ii) synthesizing said sets of oligonucleotides such that each set has a different nucleotide in said common position, the nucleotides which are not in said common position being randomized; (b) assaying each of the sets for activity against the target molecule; (c) selecting the set having the highest activity; (d) preparing a further group of sets of oligonucleotides of said substantially same length, each of the sets having in the previously defined common position the nucleotide appearing in that position in the set selected in step (c), each set of said further group of sets having a different nucleotide in an additional defined common position, the nucleotides in the positions of the oligonucleotides which are not in a defined common position being randomized; (e) assaying each of the sets of said further group for assayable activity for the target molecule; (f) selecting the set of said further group having the highest activity; and (g) repeating steps (d) through (f) until an oligonucleotide cassette having said assayable activity for said target molecule is determined. - View Dependent Claims (70)
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71. A method for determining an oligonucleotide having an assayable activity for a non-antibody target molecule comprising the steps of:
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(a) preparing a group of sets of oligonucleotides of substantially the same length, each oligonucleotide comprising at least one predefined oligonucleotide cassette and at least one flanking region by; (i) defining a common position in said flanking region of the oligonucleotides of the sets, and (ii) synthesizing said sets of oligonucleotides such that each set has a different nucleotide in said common position, the nucleotides of said flanking region which are not in said common position being randomized; (b) assaying each of the sets for activity against the target molecule; (c) selecting the set having the highest activity; (d) preparing a further group of sets of oligonucleotides of said substantially same length, each of the sets of said further group having in the previously defined common position the nucleotide appearing in that position in the set selected in step (c), each set of said further group of sets having a different nucleotide in an additional defined common position, the nucleotides in the positions of the oligonucleotides which are not in a defined position being randomized; (e) assaying each of the sets of said further group for said assayable activity; (f) selecting the set of said further group having the highest activity; and (g) repeating steps (d) through (f) until an oligonucleotide having said assayable activity for said target molecule is determined. - View Dependent Claims (72, 73)
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74. A method of determining an optimal set of monomers for oligomers having an assayable activity for a non-antibody target molecule comprising:
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(a) preparing a group of sets of oligomers of substantially the same length, each oligomer comprising at least three monomer units, by; (i) selecting a group of monomer units, and (ii) synthesizing sets of randomized oligomers, each set of randomized oligomers using all but at least one defined monomer unit from said group of monomer units, said excluded monomer unit being different for each set of oligomers; (b) assaying each of the sets for activity against the target molecule; (c) identifying each set of oligomers which expresses little or no activity against the target molecule; (d) selecting monomers for inclusion in said optimal set wherein each defined monomer unit excluded from the sets identified in step (c) are selected. - View Dependent Claims (75, 76, 77, 78, 79, 80)
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Specification