Project description
Profiling parasitic killers to understand how and when they change disguise
African trypanosomes cause sleeping sickness in humans and are responsible for significant livestock disease. African trypanosomes evade the immune system, and even therapies and vaccines, by periodically changing their parasitic protein surface. Each parasitic genotype has about 1 000 different variant surface glycoprotein (VSG) genes, only one of which is expressed at a given time. Studies have linked tissue distribution to disease severity but many questions remain. TRYPTISSUE is investigating links between specific host tissues and VSG expression for insight into this evasive mechanism and disease progression. Enhanced understanding could lead to more effective weapons against these and other pathogens demonstrating antigenic variation.
Objective
African trypanosomes (Trypanosoma brucei, T. congolense, and T. vivax) are extracellular parasites responsible for animal African trypanosomiasis, a livestock disease in Africa and South America that results in frequent epidemics, substantial animal mortality and economic loss. Parasites evade the host immune system through the sequential replacement of their surface coat of variant surface glycoproteins (VSGs). In T. congolense, the VSG super-family is divided into 15 phylotypes, which may have new functions beyond immune evasion. In this fellowship, we propose that VSGs may be important in tissue tropism.
Despite being considered blood parasites, African trypanosomes colonise other tissues. The extent of extravascular colonisation and its impact in parasite development remain poorly understood, even though tissue distribution is linked to disease severity and may contribute to the large phenotypic variability observed in clinical cases.
In this fellowship, I aim to study antigenic expression in distinct tissue reservoirs. First, I will characterise tissue tropism of T. congolense and T. vivax by comparing gene expression patterns of their extravascular populations. Subsequently, I will investigate the role of individual T. congolense VSG phylotypes in tissue colonisation and disease progression. To achieve this, I will establish Clustered regularly interspaced short palindromic repeats (CRISPR)-associated gene 9 (Cas9) genome editing technology for the first time in T. congolense.
I propose a multi-disciplinary approach combining computational, cell, and molecular biology to reveal species-specific adaptions to tissues and the impact that particular VSG phylotypes may have in establishing or maintaining those niches. I will show that VSGs, well known proteins in trypanosomes, play important roles in disease that go beyond the classical antigenic variation dogma.
Fields of science (EuroSciVoc)
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CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- social sciences sociology demography mortality
- medical and health sciences medical biotechnology genetic engineering gene therapy
- medical and health sciences basic medicine immunology
- agricultural sciences animal and dairy science domestic animals animal husbandry
- natural sciences biological sciences molecular biology
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
MSCA-IF-EF-ST - Standard EF
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) H2020-MSCA-IF-2018
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
1649 028 Lisboa
Portugal
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.