Related Experiment Videos
Genetic engineering and a schistosome vaccine
Veterinary Parasitology
|June 1, 1984
Summary
Developing a schistosomiasis vaccine using recombinant DNA technology focuses on identifying key surface antigens from the parasite
Area of Science:
- Parasitology
- Vaccinology
- Molecular Biology
Background:
- Early schistosomiasis vaccine attempts were empirical and largely unsuccessful.
- Recombinant DNA technology offers a novel approach to vaccine development.
- The schistosomula stage is a primary target for immune responses against schistosomiasis.
Purpose of the Study:
- To identify schistosomula surface antigens for vaccine development.
- To clone the genes encoding these target antigens.
- To explore potential diagnostic reagents for schistosomiasis.
Main Methods:
- Utilizing recombinant DNA technology for vaccine candidate identification.
- Preparing complementary DNA (cDNA) clones from egg and adult parasite messenger RNA (mRNA).
- Employing "message" selection to identify relevant antigen precursors via in vitro translation.
Main Results:
- Identified at least five schistosomula surface-antigen precursors from adult mRNA.
- Found that some identified peptides are also encoded by egg mRNA.
- Cloned an egg-specific peptide with potential immunodiagnostic value for Schistosoma mansoni.
Conclusions:
- Schistosomula surface antigens are promising candidates for a schistosomiasis vaccine.
- Molecular cloning of these antigens facilitates further vaccine development.
- Identified parasite molecules may serve dual roles as vaccine components and diagnostic tools.