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NanoFusion

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Effect of nanoparticles on membrane fusion

Nanoparticles (NPs) of different sizes, shapes, materials, and surface chemistry have been increasingly incorporated in modern formulations. In these applications, it is ubiquitous that NPs are exposed to biological media and come... ver más

31/05/2024

UNIVERSITY OF BRIS...

225K€

Presupuesto del proyecto: 225K€

Líder del proyecto

UNIVERSITY OF BRISTOL No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2024-05-31

MSCA-IF-2020: Individual Fellowships Objective:The goal of the Individual Fellowships is to enhance the creative and innovative potential...

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1 Participantes

UNIVERSITY OF BRISTOL

224.93K€ | Lider

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Duración del proyecto: 37 meses Fecha Inicio: 2021-04-08
Fecha Fin: 2024-05-31

Líder del proyecto

UNIVERSITY OF BRISTOL No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 225K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Nanoparticles (NPs) of different sizes, shapes, materials, and surface chemistry have been increasingly incorporated in modern formulations. In these applications, it is ubiquitous that NPs are exposed to biological media and come into intimate contact with cells. There is currently an urgent need to bridge the gap in our knowledge of NP toxicity in order to fulfil the potential of nanomaterial application. Such an understanding is also critical to the public perception of the safety of nanomaterials. Gaining cellular entry is a major route for NPs to impart toxicity. Studies using cell viability assays provide useful phenomenological information on the toxicity of specific NPs against specific cells under specific conditions, which however gives limited mechanistic insights into how NP physical properties are correlated with their cellular entrance and consequent toxicity. Physicochemical experiments using quantitative methods to probe the fundamental process of NP cellular entrance are lacking. A directly relevant fundamental area on the mechanisms of NP cellular entrance but remains largely unexplored is how NPs would affect the mechanism of membrane fusion - specifically, how the presence of NPs may lower the energetic barrier in the membrane fusion process. The scientific innovation of this project is to directly measure, using the surface force apparatus (SFA), in situ and in real time, interactions and fusion between model membranes (i.e. supported lipid bilayers) in the presence of NPs and as a function of lipid compositions and physicochemical properties of NPs. Direct visualisation of membrane contact in the SFA allows the role of NPs in the spatiotemporal structural evolution of membrane fusion, as the membranes engage in contact, compression, adhesion and fusion. These measurements will lead to unprecedented results, shedding light on the fundamentals of NP-mediated membrane fusion, relevant to our understanding of how NP gain cellular entry.

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