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PhotoChromic HYdrogen PERoxide biosensors for super-resolution imaging of hydrogen peroxide microenvironments

Project description

Advanced biosensors detect metabolically active microdomains within cells

In medicine, hydrogen peroxide is used as a disinfectant. However, at the cell level, it has a key role in cellular metabolism and tissue function. The EU-funded PCHYPERs project is interested in identifying the cellular microdomains where hydrogen peroxide is produced and initiates signalling. The current work is based on HYPER biosensors that change fluorescence when they detect oxygen peroxide and can be monitored through conventional microscopy. PCHYPERs researchers aim to advance this approach through photochromic variants and super-resolution microscopy that will help identify the locations of hydrogen peroxide signalling within cells at high resolution.

Objective

In cells, hydrogen peroxide (H2O2) is deliberately produced and is key for a healthy cellular metabolism, and an adequate H2O2 production and delivery is required for correct cellular and tissue functions. The majority of this H2O2 production occurs in cellular microdomains, and the signalling actions in these microdomains are restricted to a very confined area. Most of these discoveries were made possible thanks to the use of genetically-encoded fluorescent biosensors that detect the changes in H2O2 concentration, including the HYPER family of biosensors. However, the details of these microdomains are missing because these biosensors rely on conventional fluorescence microscopy methods, which are limited in spatial resolution.

This project aims to overcome the resolution limitation in H2O2 imaging by developing photochromic variants of the HYPER biosensors, known as PCHYPERs, that can be utilized in super-resolution microscopy. This will enable to discern the gradients of metabolic H2O2 at a high resolution, helping identify the role of H2O2 as a cellular messenger in signalling pathways and the functional implications of its disturbance.

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MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

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Call for proposal

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(opens in new window) H2020-MSCA-IF-2020

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Coordinator

KATHOLIEKE UNIVERSITEIT LEUVEN
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.

€ 178 320,00
Address
OUDE MARKT 13
3000 LEUVEN
Belgium

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Region
Vlaams Gewest Prov. Vlaams-Brabant Arr. Leuven
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.

€ 178 320,00
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