smTI · Visualisation of translation initiation reaction on single mRNA molecules in vivo
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2021-05-01 → 2023-04-30
- EU contribution
- €187,572
- Participants
- 1
- Scheme
- MSCA-IF
Lines connect the coordinator with its partners.
Results in brief
Visualisation of translation initiation reaction on single mRNA molecules in vivo
Translation, an essential process in cell biology, controls the production of proteins. It is regulated at multiple stages, including initiation, elongation, and termination, through complex molecular networks. Understanding how translation is regulated is essential for unraveling various biological processes, such as development, but the underlying dynamics remain unclear. The objective of the project, which received from the Marie-Curie action, was threefold: 1. Develop a new method to visualize translation initiation in individual cells. 2. Uncover the dynamics and key mechanisms involved in translation initiation. 3. Provide a universally applicable method to study cellular processes. Thanks to the support received, the project has focused on developing an innovative approach to visualize translation processes at the single molecule levels. We successfully developed an advanced live-cell single-molecule imaging technique, utilizing nanostructures called zero-mode waveguides. In addition, we investigated translational dynamics using a new single-molecule imaging technique and acquired new insights into the molecular diversity involved in translation. The findings of this project significantly contribute to our understanding of how proteins are produced in cells. By visualizing translation processes and studying their intricacies, we have gained valuable insights that can be applied across various biological sciences. This knowledge has the potential to drive further advancements and discoveries in diverse biological fields.
Data: CORDIS, © European Union
Project objective
Translation initiation is a key step in the regulation of protein synthesis and is regulated by at least 12 different initiation factors in eukaryotes (eIFs). However, the underlying dynamics of this process remain unclear. I propose to develop a single-molecule live-cell imaging method that can be broadly applied to study the dynamics of translation initiation on individual mRNAs in human cells. The aim of the project is to visualise the binding and release of eIFs and ribosomal subunits on single mRNA molecules in real-time during translation initiation. This method, combined with imaging the synthesis of a nascent polypeptide on a single mRNA, will address the role of dynamic eIFs assembly in heterogeneous mRNA translation events, such as translational bursting and start site selection. The project will uncover the real-time dynamics of translation initiation, reveal the key mechanism of translation regulation, and provide a powerful and generally applicable method to study translation initiation and other RNA-binding protein interactions with mRNAs. The project will be developed with a leading research group for translation imaging. I introduce single-molecule imaging techniques that would facilitate new research in the group and enable transfer of ideas. The project will expand my research experience, skills, and professional networks, thereby enhancing my career development as an independent researcher.
Original text from CORDIS.
Participants
- KONINKLIJKE NEDERLANDSE AKADEMIE VAN WETENSCHAPPEN - KNAW · AMSTERDAMCoordinatorNetherlands
Links
- View on CORDIS
- DOI: 10.3030/101026470
- https://www.hubrecht.eu/marie-curie-grants-sora-yang-daniel-krueger/
Data: CORDIS, © European Union
