Reassessing Bacterial Cell Cycle Regulation: Revealing Novel Regulatory Principles in Realistic Environments

This project aims to investigate the bacterial cell cycle of Streptococcus pneumoniae under clinically relevant stresses to identify new antimicrobial targets against antibiotic resistance.

Subsidie
€ 1.499.926
2025

Projectdetails

Introduction

Antibiotic resistance is quickly becoming one of the greatest healthcare challenges of our time. It is soon expected to claim more lives annually than the COVID-19 pandemic or cancer. Yet, the urgency of this problem is not reflected in our efforts to solve it.

Background

Because blocking bacterial growth is key in treating disease, greater insight into the bacterial cell cycle is needed. Currently, the bacterial cell cycle is primarily studied under optimal lab conditions. This is equivalent to studying the behaviour of an animal kept prisoner in a zoo. Although valuable observations can be made, essential information will be missed.

Research Objective

To obtain a more accurate view of bacterial growth, I will investigate the cell cycle of the major human pathogen Streptococcus pneumoniae while applying clinically relevant stresses. Based on my first-hand experience with the S. pneumoniae cell cycle, I hypothesize that many cell cycle regulatory mechanisms have been overlooked thus far because of their relatively low importance in optimal growth conditions, which are rarely encountered in reality.

Methodology

I will identify genes involved in such cell cycle regulatory mechanisms at a genome-wide scale using an innovative approach I developed for this purpose. In contrast to fitness-based nonspecific read-outs, I will perform FACS-seq (fluorescence-activated cell sorting-based sequencing) to select mutants in which specific cell cycle processes are altered based on appropriate fluorescent read-outs.

  1. Identify selected mutants.
  2. Characterize the molecular mechanisms involved.
  3. Investigate their level of conservation.

Expected Outcomes

My research will substantially advance our understanding of how bacteria regulate their cell cycle when exposed to real-life stresses. My results can therefore provide a starting point for the development of new antimicrobial therapies that target mechanisms important for growth in vivo. Given the emerging antibiotic resistance crisis, such efforts are urgently needed.

Financiële details & Tijdlijn

Financiële details

Subsidiebedrag€ 1.499.926
Totale projectbegroting€ 1.499.926

Tijdlijn

Startdatum1-1-2025
Einddatum31-12-2029
Subsidiejaar2025

Partners & Locaties

Projectpartners

  • UNIVERSITE CATHOLIQUE DE LOUVAINpenvoerder

Land(en)

Belgium

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