This proposal focuses on the detection of HIV antigens in blood. The antigen detection system will involve optimization of a sandwich type capture ELISA by investigation of a large set of antiviral antibodies coupled with the development of novel signal amplification techniques called """"""""enzyme channeling"""""""" and """"""""cycling reactions."""""""" Immunoglobulins will be obtained from human plasma and affinity purified. Antibodies will be similarly prepared from rabbits immunized with lysed virions and from rabbits immunized with viral components (p24 and envelope glycoproteins) obtained from viral purifications, DNA cloning and peptide synthesis. Monoclonal antibodies will also be prepared. Suitable noncompetitive antigens as references and for specificity using human blood proteins and unrelated virus controls. Extensive effort will then be placed on the enhancement of the immunoassay by innovative techniques which exploit coupled enzyme reactions in both the solid and liquid phases of the assay system. Based on similar assays that have been developed, the investigators project the development of an extraordinarily simple, rapid and sensitive test.

Agency
National Institute of Health (NIH)
Institute
Division of Blood Diseases And Resources (NHLBI)
Type
Research and Development Contracts (N01)
Project #
N01HB067017-006
Application #
3645664
Study Section
Project Start
1986-09-30
Project End
1991-09-29
Budget Start
1990-06-27
Budget End
1991-09-29
Support Year
Fiscal Year
1990
Total Cost
Indirect Cost
Name
Johns Hopkins University
Department
Type
Schools of Medicine
DUNS #
045911138
City
Baltimore
State
MD
Country
United States
Zip Code
21218
Coutlee, F; Yang, B Z; Bobo, L et al. (1990) Enzyme immunoassay for detection of hybrids between PCR-amplified HIV-1 DNA and a RNA probe: PCR-EIA. AIDS Res Hum Retroviruses 6:775-84
Yolken, R H; Coutlee, F; Viscidi, R P (1989) New prospects for the diagnosis of viral infections. Yale J Biol Med 62:131-9
Viscidi, R; Farzadegan, H; Leister, F et al. (1988) Enzyme immunoassay for detection of human immunodeficiency virus antigens in cell cultures. J Clin Microbiol 26:453-8