Process for detecting an antibody using a nucleic acid amplification probe
First Claim
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1. A process for detecting the presence or absence of at least one specific antibody in a sample containing an antibody or mixture of antibodies, which process comprises:
- (a) contacting the sample with an antigen which binds to said antibody to form an antibody-antigen complex,(b) treating the sample to remove any of said antibody or said antigen which are not bound,(c) treating the sample with a first oligonucleotide under conditions such that a portion of said first oligonucleotide binds to said antibody-antigen complex and a portion of said first oligonucleotide does not bind to said antibody-antigen complex, wherein said portion of said first oligonucleotide which does not bind to said antibody-antigen complex forms a double-stranded RNA polymerase binding site and a nucleotide sequence transcribing RNA when hybridized to a complementary nucleotide sequence in the absence of nucleic acid extension,(d) treating the sample to remove any of first oligonucleotide which is not bound to said antibody-antigen complex,(e) treating the sample with a second oligonucleotide under hybridizing conditions such that said second oligonucleotide hybridizes to said portion of said first oligonucleotide which does not bind to said antibody-antigen complex and forms a double-stranded RNA polymerase binding site and nucleotide sequence transcribing RNA,(f) treating the sample with RNA polymerase and nucleotide triphosphates such that said nucleotide sequence formed between a portion of said first oligonucleotide and a portion of said second oligonucleotide results in the synthesis of RNA transcripts from the nucleotide sequence transcribing RNA, and(g) determining whether said RNA transcripts were synthesized.
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Abstract
A process for detecting the presence or absence of a specific nucleic acid sequence or antibody in a sample using an oligonucleotide to bind to the nucleic acid sequence or antibody to be detected, forming double-stranded nucleic acid sequence using the bound oligonucleotide in conjunction with another oligonucleotide or DNA synthesis, synthesizing RNA transcripts from the thus-formed double-stranded nucleic acid sequence, and detecting the existence of the RNA transcripts, and oligonucleotides and kits useful in carrying out such a process.
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Citations
6 Claims
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1. A process for detecting the presence or absence of at least one specific antibody in a sample containing an antibody or mixture of antibodies, which process comprises:
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(a) contacting the sample with an antigen which binds to said antibody to form an antibody-antigen complex, (b) treating the sample to remove any of said antibody or said antigen which are not bound, (c) treating the sample with a first oligonucleotide under conditions such that a portion of said first oligonucleotide binds to said antibody-antigen complex and a portion of said first oligonucleotide does not bind to said antibody-antigen complex, wherein said portion of said first oligonucleotide which does not bind to said antibody-antigen complex forms a double-stranded RNA polymerase binding site and a nucleotide sequence transcribing RNA when hybridized to a complementary nucleotide sequence in the absence of nucleic acid extension, (d) treating the sample to remove any of first oligonucleotide which is not bound to said antibody-antigen complex, (e) treating the sample with a second oligonucleotide under hybridizing conditions such that said second oligonucleotide hybridizes to said portion of said first oligonucleotide which does not bind to said antibody-antigen complex and forms a double-stranded RNA polymerase binding site and nucleotide sequence transcribing RNA, (f) treating the sample with RNA polymerase and nucleotide triphosphates such that said nucleotide sequence formed between a portion of said first oligonucleotide and a portion of said second oligonucleotide results in the synthesis of RNA transcripts from the nucleotide sequence transcribing RNA, and (g) determining whether said RNA transcripts were synthesized. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification