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1. US6107066 - Detection of transmembrane potentials by optical methods

Office United States of America
Application Number 08765860
Application Date 08.05.1997
Publication Number 6107066
Publication Date 22.08.2000
Grant Number 6107066
Grant Date 22.08.2000
Publication Kind A
IPC
C12Q 1/02
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
1Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
02involving viable microorganisms
C12N 13/00
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
13Treatment of microorganisms or enzymes with electrical or wave energy, e.g. magnetism, sonic waves
C07D 209/00
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
209Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
C07D 209/08
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
209Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
02condensed with one carbocyclic ring
04Indoles; Hydrogenated indoles
08with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to carbon atoms of the hetero ring
C07D 239/00
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
239Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
C07D 239/60
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
239Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
02not condensed with other rings
24having three or more double bonds between ring members or between ring members and non-ring members
28with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
46Two or more oxygen, sulfur or nitrogen atoms
60Three or more oxygen or sulfur atoms
CPC
G01N 33/582
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
48Biological material, e.g. blood, urine
50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
58involving labelled substances
582with fluorescent label
C07D 209/08
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
209Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
02condensed with one carbocyclic ring
04Indoles; Hydrogenated indoles
08with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to carbon atoms of the hetero ring
C07D 239/60
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
239Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
02not condensed with other rings
24having three or more double bonds between ring members or between ring members and non-ring members
28with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
46Two or more oxygen, sulfur or nitrogen atoms
60Three or more oxygen or sulfur atoms
C07D 239/62
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
239Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
02not condensed with other rings
24having three or more double bonds between ring members or between ring members and non-ring members
28with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
46Two or more oxygen, sulfur or nitrogen atoms
60Three or more oxygen or sulfur atoms
62Barbituric acids
C07D 239/66
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
239Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
02not condensed with other rings
24having three or more double bonds between ring members or between ring members and non-ring members
28with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
46Two or more oxygen, sulfur or nitrogen atoms
60Three or more oxygen or sulfur atoms
66Thiobarbituric acids
C07D 311/16
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
311Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
02ortho- or peri-condensed with carbocyclic rings or ring systems
04Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
06with oxygen or sulfur atoms directly attached in position 2
08not hydrogenated in the hetero ring
16substituted in position 7
Applicants The Regents of the University of California
Inventors Tsien Roger Y.
Gonzalez Jesus E.
Agents Gray Cary Ware & Freidenrich LLP
Haile Lisa A.
Priority Data 08481977 07.06.1995 US
Title
(EN) Detection of transmembrane potentials by optical methods
Abstract
(EN)

Methods and compositions are provided for determining the potential of a membrane. In one aspect, the method comprises: PA1 (a) introducing a first reagent comprising a hydrophobic fluorescent ion 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, as described by the Nernst equation, PA1 (b) introducing a second reagent which labels the first face or the second face of the membrane, which second reagent comprises a chromophore capable of undergoing energy transfer by either (i) donating excited state energy to the fluorescent ion, or (ii) accepting excited state energy from the fluorescent ion, PA1 (c) exposing the membrane to radiation; PA1 (d) measuring energy transfer between the fluorescent ion and the second reagent, and PA1 (e) relating the energy transfer to the membrane potential. PAL Energy transfer is typically measured by fluorescence resonance energy transfer. In some embodiments the first and second reagents are bound together by a suitable linker. PAL In one aspect the method is used to identify compounds which modulate membrane potentials in biological membranes.

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