US5582981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for identifying an oligonucleotide aptamer specific for a target
Assignee: Gilead Sciences Inc
•
Filing: 1994-04-28
•
Granted: 1996-12-10
•
Expires: 2014-04-28
Abstract
Abstract A method for identifying oligomer sequences which specifically bind target biomolecules is described. The technique involves complexation of the support-bound target molecule with a mixture of oligonucleotides containing random sequences and sequences which serve as primer for PCR under conditions wherein a complex is formed with the specifically binding sequences, but not with the other members of the oligonucleotide mixture. The target-oligonucleotide complexes are then separated from both the support and the uncomplexed oligonucleotides and the complexed members of the oligonucleotide mixture are recovered from the separated complex and subsequently amplified using the polymerase chain reaction. The recovered oligonucleotides may be sequenced, and successive rounds of selection using complexation, separation, amplification and recovery can be employed.
Inventors
- 👤 John J. Toole
- 👤 John Latham
- 👤 Louis C. Bock
- 👤 Linda C. Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:11
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/86; C; C12; C12Q; C12Q1/00; C12Q1/68; C12Q1/6811; C12Q1/6844; C12Q1/686; G01N2333/00; G01N2333/90; G01N2333/914; G01N2333/948; G01N2333/974
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
100 words
A method for identifying an aptamer which specifically binds to thrombin, wherein the aptamer comprises the sequence 5' GGNTGG 3' wherein N is A, T Or G which method comprises: (a) incubating thrombin reversibly coupled to a support with a randomized mixture of single-stranded DNA oligonucleotide sequences under conditions wherein the member of the mixture to form a support-bound oligonucleotide-thrombin complex; (b) decoupling and recovering support-bound oligonucleotide-thrombin complex to form a free oligonucleotide-thrombin complex; (c) recovering free oligonucleotide from the free oligonucleotide-thrombin complex and recovering and amplifying the free oligonucleotide; and (d) optionally determining the sequence of the recovered oligonucleotide.
Claim 2
Independent Claim
100 words
A method for identifying an aptamer which specifically binds to thrombin, wherein the aptamer comprises the sequence 5' GGNTGG 3' wherein N is A, T Or G which method comprises: (a) incubating thrombin reversibly coupled to a support with a randomized mixture of single-stranded DNA oligonucleotide sequences under conditions wherein the member of the mixture to form a support-bound oligonucleotide-thrombin complex; (b) decoupling and recovering support-bound oligonucleotide-thrombin complex to form a free oligonucleotide-thrombin complex; (c) recovering free oligonucleotide from the free oligonucleotide-thrombin complex and recovering and amplifying the free oligonucleotide; and (d) optionally determining the sequence of the recovered oligonucleotide.
Claim 3
Dependent Claim
9 words
The method of claim 1 wherein N is T.
Claim 4
Dependent Claim
25 words
The method of claim 1 wherein the aptamer comprises the sequence 5' GGNTGG(N) Z GGNTGG 3' wherein Z is an integer from 2 to 5.
Claim 5
Dependent Claim
9 words
The method of claim 3 wherein Z is 3.
Claim 6
Dependent Claim
14 words
The method of claim 4 wherein the aptamer comprises the sequence 5' GGNTGGTGTGGNTGG 3'.
Claim 7
Dependent Claim
9 words
The method of claim 5 wherein N is T.
Claim 8
Dependent Claim
12 words
The method of claim 1 wherein the support is a lectin column.
Claim 9
Dependent Claim
12 words
The method of claim 1 wherein the support is a solid support.
Claim 10
Dependent Claim
13 words
The method of claim 1 wherein the solid support comprises agarose or sepharose.
Claim 11
Dependent Claim
12 words
The method of claim 3 wherein the support is a lectin column.
Claim 12
Dependent Claim
12 words
The method of claim 3 wherein the support is a solid support.
Claim 13
Dependent Claim
13 words
The method of claim 3 wherein the solid support comprises agarose or sepharose.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-10 | 2000-06-10 | 2000-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-10 | 2004-06-10 | 2004-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-10 | 2008-06-10 | 2008-12-10 | $7700.00 | Window Closed / Lapsed |