Colorimetric detection of nucleic acid amplification
US11584957B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2020 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Nov 19, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q1/6846
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Colorimetry is used to detect amplification reaction products. A sample is contacted with a reaction mix under conditions such that an amplification reaction occurs and produces an amplification reaction product if the sample contains a target nucleic acid template molecule. The reaction mix includes an enzyme for catalyzing the amplification reaction, and at least one halochromic agent. If the target nucleic acid template molecule is present, the amplification reaction changes the starting pH of the reaction mix to cause a detectable colorimetric change of the halochromic agent, thereby indicating the presence of the target nucleic acid. If the target nucleic acid template molecule is not present, the amplification reaction does not generate an adequate number of protons to sufficiently change the starting pH of the reaction mix to cause a detectable colorimetric change of the halochromic agent, thereby indicating that the amplification reaction product has not been produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.