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Designer Biofilms: controlling cellular interactions by printing bacteria onto rationally micro-shaped surfaces.

Project description

Studying biofilm dynamics through controlled bacteria printing on micro-shaped surfaces

Bacterial biofilms are surface-attached communities of microorganisms encased in protective extracellular matrices. On medical devices or implants, they can cause persistent infection and are resilient to antibiotic treatment. On industrial equipment, they can disrupt pipelines and cause spoilage in food-processing plants. Understanding biofilm dynamics is challenging because populations often contain multiple bacterial species that grow on irregular surfaces. With the support of the Marie Skłodowska-Curie Actions programme, the DesiBio project aims to study the impact of surface shape and the spatial distribution of subpopulations on biofilm development. It will leverage microfabrication techniques, microfluidics and droplet printing to develop a modelling system that monitors bacterial interactions during biofilm growth, while controlling initial community composition and micro-surface irregularities.

Objective

Bacterial biofilms–conglomerates of bacteria held together by an extracellular matrix–play a major role in our lives including disrupting medical implants, industrial pipelines, or providing antibiotic tolerance to bacteria deep within biofilms by e.g. limiting antibiotic diffusion. It is imperative we understand biofilm population dynamics to improve both our health and industrial processes. However, biofilms are difficult to study because 1) they often contain multiple bacterial species or multiple genetic variants of a single species that form biofilm subpopulations, where the interactions of subpopulations are controlled by their spatial distribution within the biofilm and 2) they are often found growing on irregular surfaces with nooks and crevices, in contrast to most biofilm models on flat agar surfaces. To understand the biofilm dynamics, and thus to control it, it is crucial to analyze the impact of the surface shape and the spatial distribution of biofilm subpopulations on the biofilm formation and growth. However, we lack tractable methods to do so for several days necessary for a typical biofilm to stabilize. Here we propose a synergistic effort based on years of research by myself (surface irregularity, microfluidics expert) and the Imperial College Host (bacteria printing expert), where we aim to use microfabrication techniques, microfluidics, and droplet printing to develop a system to follow bacterial interactions in a growing biofilm where we control: a) the initial patterning of the community, b) surface irregularities on which the community grows, c) cell-surface interactions. We will work with Prof. Sujit Datta at Caltech (secondment) to follow mutant spread in biofilms in porous beds, and we will work with a Paris-based company Hummink to potentially the results of DesiBio for potential commercialization (non-academic placement).

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-2024-PF-01

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Coordinator

IMPERIAL COLLEGE OF SCIENCE TECHNOLOGY AND MEDICINE
Net EU contribution
€ 299 203,58
Address
SOUTH KENSINGTON CAMPUS EXHIBITION ROAD
SW7 2AZ London
United Kingdom
Region
London Inner London — West Westminster
Activity type
Higher or Secondary Education Establishments
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Total cost
No data

Partners (2)