D-luciferin derivatives, their application and processes for the detection of ligands marked with an enzyme in the determination of biochemical substances
First Claim
1. D-luciferin derivatives which are enzyme substrates, which release luciferin upon reaction with enzyme and which have a formula (I):
- ##STR35## and wherein said luciferin derivative is D-luciferyl-L-N-alpha-arginine (R1 is L-H-alpha-arginin, R2 is H);
D-luciferyl-L-phenylalanin (R1 is --NH--CH(CH2 C6 H5)--COOH, R2 is H);
D-luciferyl-L-methionine (R1 is --NH--CH((CH2 SCH3)--COOH, R2 is H);
D-luciferyl-L-glycine (R1 is --NH--CH2 COOH, R2 is H);
D-luciferin-O-sulfate (R1 is OH, R2 is --SO2 --OH);
D-luciferin-O-phosphate (R1 is --OH, R2 is --P(O)--(OH)2);
D-luciferin-O-(C1)glucose(R1 is OH and R2 is glucose);
orD-luciferin-O-(C1)galactose (R1 is OH and R2 is galactose).
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Abstract
The object of the invention consists of D-luciferin derivatives of General Formula (I) ##STR1## wherein R1 =OH, alkoxy, alkenyloxy, amino acid, NH2 or oligopeptide and
R2 =H; H2 PO3 --; HSO3 --; alkyl or alkenyl, optionally substituted by phenyl; aryl; ##STR2## with R3 =alkyl or alkenyl, optionally substituted by phenyl; mono- or disaccharide or nucleotide.
An object of the invention is further the use of said luciferin derivatives for the detection of ligands in the determination of biochemical substances, in particular in enzyme immuno assays, in blot processes and in nucleic acid hybridization. These ligands are attached to an enzyme (enzyme conjugate). In the process, for example an antigen, a hapten or an antibody is conjugated with an enzyme. The enzyme conjugate is capable of releasing luciferin from the luciferin derivative. The luciferin released is reacted with luciferase. The amount of light emitted in the process is determined. From the data obtained in this manner, the quantity of the substances to be determined may be derived.
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Citations
5 Claims
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1. D-luciferin derivatives which are enzyme substrates, which release luciferin upon reaction with enzyme and which have a formula (I):
- ##STR35## and wherein said luciferin derivative is D-luciferyl-L-N-alpha-arginine (R1 is L-H-alpha-arginin, R2 is H);
D-luciferyl-L-phenylalanin (R1 is --NH--CH(CH2 C6 H5)--COOH, R2 is H); D-luciferyl-L-methionine (R1 is --NH--CH((CH2 SCH3)--COOH, R2 is H); D-luciferyl-L-glycine (R1 is --NH--CH2 COOH, R2 is H); D-luciferin-O-sulfate (R1 is OH, R2 is --SO2 --OH); D-luciferin-O-phosphate (R1 is --OH, R2 is --P(O)--(OH)2); D-luciferin-O-(C1)glucose(R1 is OH and R2 is glucose);
orD-luciferin-O-(C1)galactose (R1 is OH and R2 is galactose). - View Dependent Claims (2, 3)
- ##STR35## and wherein said luciferin derivative is D-luciferyl-L-N-alpha-arginine (R1 is L-H-alpha-arginin, R2 is H);
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4. In a chemical test wherein a ligand conjugated to an enzyme (enzyme-ligand conjugate) is reacted with its biochemical co-reactant to produce a combination (enzyme-ligand+coreactant) and wherein the enzyme-ligand conjugate, which is either contained in said combination or not, is detected by its reaction with a substrate for such enzyme whereby a measurable species is released and wherein the improvement comprises using as an enzyme substrate a compound which releases luciferin and has a formula (I):
- ##STR36## wherein R1 is a hydroxy or amino group;
a linear or branched C1 -C20 alkoxy or C2 -C20 alkenyloxy group;
an L-amino acid radical bound by the alpha-amino group;
or an oligopeptide radical with up to 10 L-amino acid units, bound by the α
-amino group of the terminal amino acid unit and R2 is hydrogen atom;
a H2 PO3 -- or HSO3 group;
a linear or branched C1 -C20 alkyl or C2 -C20 alkenyl group, optionally substituted by one or several phenyl radicals;
an aryl group with 6 to 18 carbon atoms;
a group of the formula (II);
##STR37## wherein R3 is a linear or branched C1 -C20 alkyl or a C2 -C20 alkenyl group optionally substituted by a phenyl radical;
or a C6 -C18 aryl group;
a naturally occurring nucleotide radical with 1 to 3 phosphate groups attached by means of the phosphate group or groups;
or a glucosidically attached mono- or disaccharide;
which comprises reacting the enzyme conjugate with said luciferin derivative to release luciferin;
the released luciferin reacts with the enzyme luciferase of the fire fly Photinus pyralis and the amount of light emitted is measured quantitatively and the quantity of the substance to be detected is obtained from the data. - View Dependent Claims (5)
- ##STR36## wherein R1 is a hydroxy or amino group;
Specification