N-1-carboxyalkyl derivatives of LSD
First Claim
1. An enzyme immunoassay method for determining LSD in a sample comprising:
- (a) contacting said sample with(i) an enzyme donor polypeptide conjugate of the form;
##STR8## wherein Z is an enzyme donor polypeptide of β
-galactosidase;
R1 =an alkyl, cycloalkyl or aryl group having 1 to 10 carbon atoms;
R2 =a bond or ##STR9## wherein R3 =an alkyl, cycloalkyl, or aryl group having 2 to 10 carbon atoms; and
n=1 to p where p=MW of Z/1000;
(ii) an enzyme acceptor polypeptide wherein said enzyme acceptor polypeptide is characterized by forming with said enzyme donor polypeptide conjugate an active enzyme complex having β
-galactosidase activity in the absence of an antibody to LSD;
(iii) an antibody specific for LSD, wherein said enzyme donor conjugate is capable of competitively binding to said antibody, thereby inhibiting the formation of active enzyme complex; and
(iv) a substrate for β
-galactosidase; and
(b) measuring the rate of conversion of said substrate by said active enzyme complex as a measure of the amount of LSD in said sample.
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Abstract
Novel derivatives of LSD having the formula ##STR1## wherein R1 is an alkyl, cycloalkyl or aryl group having 1 to 10 carbon atoms, preferably an alkyl group having 1 carbon atom;
R2 is a bond or ##STR2## wherein R3 is alkyl, cycloalkyl or aryl group having 2 to 10 carbon atoms, preferably an alkyl group having 2 or 5 carbon atoms; Z is an immunogenic carrier substance, an enzyme donor polypeptide or a label selected from the group consisting of an enzyme, a substance having fluorescent or luminescent properties and a radioactive substance; and n is 1 to p where p equals MW of Z/1000. The derivatives include maleimide conjugates of an immunogenic poly(amino acid), an enzyme donor polypeptide or a labeling substance such as an enzyme, a fluorescent substance or a radioactive substance. Novel activated hapten intermediates useful in the preparation of the conjugates and methods for synthesis of the hapten intermediates and their conjugate derivatives are also disclosed.
13 Citations
23 Claims
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1. An enzyme immunoassay method for determining LSD in a sample comprising:
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(a) contacting said sample with (i) an enzyme donor polypeptide conjugate of the form;
##STR8## wherein Z is an enzyme donor polypeptide of β
-galactosidase;
R1 =an alkyl, cycloalkyl or aryl group having 1 to 10 carbon atoms;R2 =a bond or ##STR9## wherein R3 =an alkyl, cycloalkyl, or aryl group having 2 to 10 carbon atoms; and n=1 to p where p=MW of Z/1000; (ii) an enzyme acceptor polypeptide wherein said enzyme acceptor polypeptide is characterized by forming with said enzyme donor polypeptide conjugate an active enzyme complex having β
-galactosidase activity in the absence of an antibody to LSD;(iii) an antibody specific for LSD, wherein said enzyme donor conjugate is capable of competitively binding to said antibody, thereby inhibiting the formation of active enzyme complex; and (iv) a substrate for β
-galactosidase; and(b) measuring the rate of conversion of said substrate by said active enzyme complex as a measure of the amount of LSD in said sample.
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2. An enzyme immunoassay method for determining LSD in a sample comprising:
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(a) contacting said sample with (i) an enzyme donor polypeptide conjugate of β
-galactosidase;(ii) an enzyme acceptor polypeptide wherein said enzyme acceptor polypeptide is characterized by forming with said enzyme donor polypeptide conjugate an active enzyme complex having β
-galactosidase activity in the absence of an antibody to LSD;(iii) an antibody to a compound of the form;
##STR10## wherein Z is an immunogenic carrier substance;
R1 =an alkyl, cycloalkyl or aryl group having 1 to 10 carbon atoms;R2 =a bond or ##STR11## wherein R3 =an alkyl, cycloalkyl, or aryl group having 2 to 10 carbon atoms; and n=1 top where p=MW of Z/1000, wherein said enzyme donor conjugate is capable of competitively binding to said antibody thereby inhibiting the formation of active enzyme complex; and (iv) a substrate for β
-galactosidase; and(b) measuring the rate of conversion of said substrate by said active enzyme complex as a measure of the amount of LSD in said sample.
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3. A set of reagents for determining the presence of LSD or its metabolites in a urine sample by enzyme immunoassay, comprising:
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a first reagent containing a conjugate of LSD and an enzyme or enzyme donor polypeptide; and a second reagent containing an antibody capable of binding, the conjugate of the first reagent in a manner that is inhibitable by LSD. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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12. An enzyme immunoassay method for determining the presence of LSD or LSD metabolites in a sample, comprising
a) contacting an antibody capable of binding LSD with any LSD or LSD metabolites in the sample; -
b) contacting the antibody with a conjugate of LSD and an enzyme or enzyme donor polypeptide; and c) measuring any complexes formed between the conjugated and the antibody. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification