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Modelling of fracture in soft biological tissues

Project description

Advanced tissue fracture model

The retinal pigment epithelium (RPE) is a monolayer of pigmented cells that supports photoreceptors, regulates nutrient exchange and removes waste. When the RPE ruptures, it disrupts these essential functions, leading to vision loss and retinal degeneration. Despite its importance, RPE fracture remains poorly understood. With the support of the Marie Skłodowska-Curie Actions programme, the BIOFRAC project aims to develop an advanced numerical model of RPE fracture. Researchers will follow an innovative micromechanical approach and combine experimental and clinical data to generate a computational model for assessing RPE fracture risks in age-related macular degeneration. BIOFRAC research is expected to help understand disease progression and pave the way towards therapeutic interventions.

Objective

Blood vessel rupture in brain aneurysm is fatal in 40% of cases; vision loss initiated by Retina Pigment Epithelium rupture affected 60 million people in 2020. This proposal establishes new approaches to simulate these systems and the fellowship develops a unique skillset to solve problems involving tissue fracture, having major impact on future medical intervention. Soft tissues are essential in our body and their failure to maintain mechanical integrity leads to diseases. Despite its importance, present understanding of fracture in tissues is limited. Fracture significantly alters the mechanics of tissues and experiments alone are unable to disentangle the interacting processes occurring concurrently at the crack tip and in the bulk material. Hence, a mathematical approach is needed to understand how fracture propagates at cell level up to failure. Models that account for all the complex processes that occur during fracture are still missing. BIOFRAC aims to develop an accurate numerical model of tissue fracture by adopting an innovative micromechanical approach—supported by laboratory and clinical experiments—to account for the multi-physical complexities by means of a novel constitutive relationship. This approach will allow us to predict crack evolution up to catastrophic failure. BIOFRAC focuses on the study of a single layer of epithelial cells—a simple yet clinically relevant tissue that lines many organs. Using this system, BIOFRAC seeks to uncover the biophysical and mechanical processes that control fracture initiation and propagation. The approach will then be used to address ophthalmological problems by development of a novel computational model for Retinal Pigment Epithelium able to quantify the risks of fracture during Age-related Macular Degeneration treatment. BIOFRAC will stimulate more studies of disease evolution and novel therapy. The new skills will boost my career by placing me at the forefront of tissue failure research.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2022-PF-01

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Coordinator

POLITECNICO DI MILANO
Net EU contribution
€ 172 750,08
Address
PIAZZA LEONARDO DA VINCI 32
20133 Milano
Italy
Region
Nord-Ovest Lombardia Milano
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data

Partners (1)