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Investigating micro-RNA Dynamics using Paramagnetic NMR Spectroscopy

Project description

Unveiling the functional diversity of RNA

Our view on the potential functions of RNA molecules has completely changed over the years with the discovery of small non-coding RNAs. The capacity of microRNAs to regulate gene expression affects more than half of protein-coding genes in humans. However, we lack fundamental insight into the association between RNA structure and motion, and biological function. To address this need, the EU-funded PARAMIR project will employ nuclear magnetic resonance spectroscopy to study the structure and dynamics of RNA molecules. Results will provide fundamental insight into important biological processes and open new avenues for RNA-oriented drug discovery.

Objective

Over the last decades, new discoveries have revealed an ever-increasing diversity of RNA functions, profoundly modifying the conceptual framework of molecular biology. This is the case of micro-RNAs (miRNA), a fascinating class of small non-coding RNA that play essential roles in RNA induced gene silencing and are estimated to target up to 60% of protein-coding genes in humans.
RNA functional diversity is often triggered by conformational changes, so capturing the dynamics of these molecules is key to a precise understanding of their function, which in turn is essential to control their activity. Nuclear Magnetic Resonance (NMR) spectroscopy is extremely well suited to investigate dynamical processes. However, the sparsity of measureable NMR data in a RNA sample represents a major bottleneck, preventing so far an accurate description of RNA conformational fluctuations.
This project aims to overcome this barrier by developing paramagnetic NMR for RNA. By chemically modifying an RNA, I will introduce paramagnetic tags to strategic positions so as to acquire NMR data from otherwise silent substrate. Adequate computational and analytical models will be developed to decode the experimental data into an atomic-level description of dynamics.
These goals require a leap forward with respect to today’s approaches. I propose to achieve this by combining innovative sample preparation strategies and NMR experiments, high magnetic fields, and MD simulations. With these methods, I will enable the determination of the dynamic landscape of let-7, the first miRNA discovered in humans, involved in cell proliferation and differentiation and oncogenesis.
This project will yield a broadly applicable method for the structural and dynamic characterization of RNA with unprecedented details. This knowledge will improve our fundamental biochemical and biophysical conception of RNA, opening new avenues for bioengineering and establishing the bases for rational RNA-oriented drug discovery.

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Keywords

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Programme(s)

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Topic(s)

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Funding Scheme

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ERC-STG - Starting Grant

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Call for proposal

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(opens in new window) ERC-2018-STG

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Host institution

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
Net EU contribution

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.

€ 1 633 500,00
Total cost

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.

€ 1 633 500,00

Beneficiaries (1)

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