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Content archived on 2022-12-23

A New Vector for Antigen Preparation for Diagnosis, Vaccination and Epidemiological Surveillance of L. Infantum and L. Major

Objective

- To develop a novel vaccine candidate through isolation of appropriate antigens and cloning these into the pseudomonas lipoprotein vector;
- To verify the efficiency of these vaccines in mice and dog models, the latter to be developed in Algeria and Morocco.
Expected Outcome

- Improved knowledge of the genetic basis of antigens of L. infantum and L. major;
- Several antigens isolated, cloned on pseudomonas and tested in different animal models with regard to their vaccination efficiency;
- Novel approach to develop and test a vaccine that might be useful also for other vaccine preparations.

Results

- Production of L. major lipoprotein/GP63 fusion protein.
- Cloning of L. infantum GP63 gene.
- Use of GP63 fusion protein to detect antibodies in human infection by L. major and L. infantum.
- Use of GP63 fusion protein to elicit antibodies in mice and detection of GP63 variants in old and new world Leishmania.
- Establishment of canine models for L. infantum and L. major infection.
- Characterisation of GP63 from field isolates and cloning and subcloning of regions of interest of GP63 (protein analysis, gene expression, gene structures);
- Cloning of the GP63 genes into the Pseudomonas vector;
- Acquisition of basic data on specific immunological responses of the human and canine populations at risk;
- Testing of cloned GP63 with regard to their immunogenic activity in dog and mouse models followed by immunising dog-models with the most efficient clones;
- Development of a candidate vaccine based on the identified immunising clones;
- Testing of resistance of immunised animals against natural parasites less or more virulent (L. major / mouse model) or recent field isolates (L. infantum / dog model);
- Development of a diagnosis technology based on antigens and to be carried out on blood samples.

Topic(s)

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Call for proposal

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Coordinator

Vrije Universiteit Brussel
EU contribution
No data
Address
2,Pleinlaan
1050 Bruxelles
Belgium

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Total cost
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Participants (3)