Project description
Deciphering gene expression in parasites
Kinetoplastids are unicellular eukaryotic parasites that cause diseases like sleeping sickness, Chagas disease, and leishmaniasis. They exhibit a unique gene expression pattern producing long RNA chains from multiple genes which are subsequently processed into individual mRNAs. The ERC-funded TranSplice project aims to shed light on this process which is known as SL trans-splicing. The research team will employ techniques such as cryo-electron microscopy and genome editing to delineate the mechanism of SL trans-splicing. Apart from fundamental knowledge, project findings will uncover new drug targets and pave the way for new therapies against kinetoplastid-related diseases.
Objective
Kinetoplastids are unicellular eukaryotic parasites responsible for severe human pathologies, such as sleeping sickness, Chagas disease and leishmaniasis. Kinetoplastids have diverged early during evolution and harbor many intriguing cellular and molecular peculiarities. Among these is their remarkably streamlined nuclear genome characterized by a high gene density and significantly divergent and specialized gene expression systems. A main example of such divergence is the polycistronic transcription of all their genes producing long messenger RNA precursors (pre-mRNAs) containing tens to hundreds of coding sequences. These pre-mRNAs are dissected into monocistronic mRNAs by SL trans-splicing, a process during which a spliced leader (SL) RNA is intermolecularly fused to the 5’end of all mRNAs by the trans-spliceosome. Although this machinery is essential for gene expression, the lack of structural information and the high divergence of its RNA and protein elements have hindered a mechanistic understanding of how kinetoplastids employ SL trans-splicing to generate their entire mRNA transcriptome. Here, we will use innovative approaches to provide the structural and mechanistic basis of SL trans-splicing in kinetoplastids by using cutting-edge structural biology techniques and state-of-the-art genetic and in silico tools. By combining genome editing, purification of endogenous trans-splicing machineries, high-resolution cryo-electron microscopy, AI-based interactome approaches, and novel in vivo assays, we will reveal the mechanism of SL snRNP biogenesis, the molecular basis for SL snRNP intermolecular recognition and activation by the trans-spliceosome, and the central mechanism of trans-splicing orchestrated by the highly divergent kinetoplastids trans-spliceosome. The outcome of this research will transform our understanding of RNA trans-splicing in eukaryotes and will pave the way for developing new drugs that specifically target this unique and essential pathway.
Fields of science (EuroSciVoc)
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.
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.
- natural sciences biological sciences biochemistry biomolecules proteins
- natural sciences physical sciences optics microscopy
- natural sciences biological sciences genetics RNA transcriptomes
- medical and health sciences basic medicine pathology
- natural sciences biological sciences genetics genomes
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.1 - European Research Council (ERC)
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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.
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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.
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(opens in new window) ERC-2024-STG
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4000 LIEGE
Belgium
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