Detection of transmembrane potentials using N,N,N′-trialkyl thiobarbituric acid-derived polymethine oxonols
US8329390B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2005 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Aug 25, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/52
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates generally to the detection and measurement of transmembrane potentials using an N,N,N′-trialkyl thiobarbituric acid-derived polymethine oxonol (shown below). In particular, the present invention is directed to compositions and optical methods for determining transmembrane potentials across the plasma membrane of biological cells using a slightly hydrophobic N,N,N′-trialkyl thiobarbituric acid-derived polymethine oxonols. The method comprises a slightly hydrophobic N,N,N′-trialkyl thiobarbituric acid-derived polymethine oxonol anion capable of redistributing from a first face of the membrane to a second face of the membrane in response to changes in the potential of the membrane. In one aspect the method is used to identify compounds which modulate membrane potentials in biological membranes.wherein R1, R2, and R3 are independently selected from the group consisting of hydrogen, alkyl, haloalkyl and heteroalkyl; n is an integer from 1 to 3; Z is Na, K, ammonium or other biologically acceptable salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.