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Analysis of protein corona formation on nanoparticles by DNA barcodes

Objective

Nanoparticles (from 1 to 1000 nM in diameter) are widely used in point-of-care diagnostics due to their large surface area and versatile biofunctionalization. However, when used in matrices such as blood plasma and other complex biological fluids, nanoparticles are known to attract proteins that form coronas around the nanoparticles. These coronas block binding sites, cause non-specific interactions, and cause aggregation among the nanoparticles, resulting in lower signals, higher background, and large variabilities in the assays. Proteomics studies have analyzed the overall protein corona composition on different nanoparticles, depending on size, surface chemistry etc. Microscopic studies have been used to monitor the kinetics of corona formation on nanoparticles in simplified systems. However, protein-protein interactions and cooperative effects in corona formation, and their interference in diagnostic assays involving affinity reagents, have not been studied yet in a comprehensive way. In this proposal, I will adress those questions using DNA-assisted protein technology, where proteins are labeled with DNA barcode tags. The ligation of proximal barcodes will reveal protein-protein co-localizations within coronas and their interactions with affinity reagents such as antibodies. The analysis will give unique insight in the internal structure of coronas and will shed light on the origin of corona-induced nanoparticle-nanoparticle aggregation processes and nanoparticle-surface interactions, which is very important for nanoparticle-based point-of-care diagnostics.

Fields of science (EuroSciVoc)

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Programme(s)

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Topic(s)

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Funding Scheme

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MSCA-IF-EF-ST - Standard EF

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Call for proposal

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(opens in new window) H2020-MSCA-IF-2015

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Coordinator

TECHNISCHE UNIVERSITEIT EINDHOVEN
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.

€ 165 598,80
Address
GROENE LOPER 3
5612 AE Eindhoven
Netherlands

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Region
Zuid-Nederland Noord-Brabant Zuidoost-Noord-Brabant
Activity type
Higher or Secondary Education Establishments
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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.

€ 165 598,80
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