Related Experiment Videos
Serological relationship between rat and human carcinoembryonic antigen
J G Kim1, S A Wilhelm, C J Abeyounis
1Department of Microbiology, School of Medicine, State University of New York, Buffalo.
International Archives of Allergy and Applied Immunology
|January 1, 1988
Summary
Human and rat carcinoembryonic antigen (CEA) share similar antigenic properties, as demonstrated by cross-reactivity in enzyme immunoassays. These findings suggest that human and rat CEA are analogous molecules with shared determinants.
Area of Science:
- Immunology
- Biochemistry
- Oncology
Background:
- Carcinoembryonic antigen (CEA) is a tumor marker.
- Understanding cross-reactivity between species is crucial for diagnostic development.
Purpose of the Study:
- To investigate the antigenic similarities between human and rat CEA.
- To determine if antibodies against human CEA cross-react with rat CEA and vice versa.
Main Methods:
- Enzyme immunoassays were performed using rabbit antiserum to rat CEA and monkey antiserum to human CEA.
- Cross-reactivity was assessed by testing antisera against extracts of human and rat CEA, as well as normal tissues.
Main Results:
- Rabbit anti-rat CEA antiserum showed high activity with human CEA, inhibited by both human and rat CEA.
- Monkey anti-human CEA antiserum showed strong activity against rat CEA, inhibited by both rat and human CEA.
- No significant cross-reactivity was observed with normal tissues or blood group substances.
Conclusions:
- Human and rat CEA share common antigenic determinants.
- These findings suggest that human and rat CEA are analogous molecules.