The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2012
Filed:
Aug. 25, 2005
Zhenjun Diwu, Sunnyvale, CA (US);
Jianjun He, Sunnyvale, CA (US);
Yi Tang, Sunnyvale, CA (US);
AnaSpec Incorporated, Fremont, CA (US);
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.