Fluorescence dyes and their applications for whole-cell fluorescence screening assays for caspases, peptidases, proteases and other enzymes and the use thereof
First Claim
1. A compound having the following structural formula:
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or a biologically acceptable salt or pro-reporter molecule thereof, wherein;
X is a peptide comprising aspartic acid and an N-terminal protecting group;
R8 and R9 are each independently selected from the group consisting of hydrogen, alkyl and aryl;
R10 and R11 are each independently selected from the group consisting of hydrogen and alkyl;
R1-R5 are each independently hydrogen, fluoro, chloro, bromo, iodo, haloalkyl, aryl, cycloalkyl, alkyl, alkenyl, alkynyl, aralkyl, aralkenyl, aryl alkynyl, hydroxyalkyl, nitro, amino, cyano, acylamino, acyl, hydroxy, acyloxy, alkoxy, alkylthio, and carboxy;
provided that at least one of R1, R3 and R5 is selected from the group consisting of fluoro and chloro; and
provided that said N-terminal protecting group is not an acetyl group.
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Abstract
The present invention relates to novel fluorescent dyes, novel fluorogenic and fluorescent reporter molecules and new enzyme assay processes that can be used to detect the activity of caspases and other enzymes involved in apoptosis in whole cells, cell lines and tissue samples derived from any living organism or organ. The reporter molecules and assay processes can be used in drug screening procedures to identify compounds which act as inhibitors or inducers of the caspase cascade in whole cells or tissues. The reagents and assays described herein are also useful for determining the chemosensitivity of human cancer cells to treatment with chemotherapeutic drugs. The present invention also relates to novel fluorogenic and fluorescent reporter molecules and new enzyme assay processes that can be used to detect the activity of type 2 methionine aminopeptidase, HIV protease, adenovirus protease, HSV-1 protease, HCMV protease and HCV protease.
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Citations
16 Claims
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1. A compound having the following structural formula:
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or a biologically acceptable salt or pro-reporter molecule thereof, wherein; X is a peptide comprising aspartic acid and an N-terminal protecting group;
R8 and R9 are each independently selected from the group consisting of hydrogen, alkyl and aryl;
R10 and R11 are each independently selected from the group consisting of hydrogen and alkyl;
R1-R5 are each independently hydrogen, fluoro, chloro, bromo, iodo, haloalkyl, aryl, cycloalkyl, alkyl, alkenyl, alkynyl, aralkyl, aralkenyl, aryl alkynyl, hydroxyalkyl, nitro, amino, cyano, acylamino, acyl, hydroxy, acyloxy, alkoxy, alkylthio, and carboxy;
provided that at least one of R1, R3 and R5 is selected from the group consisting of fluoro and chloro; and
provided that said N-terminal protecting group is not an acetyl group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A compound having the following structural formula:
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or a biologically acceptable salt or pro-reporter molecule thereof, wherein R6 is a N-terminal protecting group;
each AA is independently an amino acid;
n is an integer from 0-5;
m is an interger from 0-3; and
R1-R5 are each independently hydrogen, fluoro, chloro, bromo, iodo, haloalkyl, aryl, cycloalkyl, alkyl, alkenyl, alkynyl, aralkyl, aralkenyl aryl alkynyl, hydroxyalkyl, nitro, amino, cyano, acylamino, acyl, hydroxy, acyloxy, alkoxy, alkylthio, and carboxy;
provided that at least one of R1, R3 and R5 is selected from the group consisting of fluoro and chloro; and
provided that said N-terminal protecting group is not an acetyl group. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification