Portrait of Constantinos Xenophontos

Constantinos Xenophontos

Postdoctoral researcher in microbial ecology, Milan

Microbial ecologist studying how bacteria grow, cooperate and cheat, and how those interactions change the way populations respond to antibiotics.

How bacteria grow, cooperate and cheat, and how those interactions change the way populations respond to antibiotics.

I am a microbial ecologist and postdoctoral researcher in Gabriele Micali’s Microbial Ecology Lab at IRCCS Humanitas Research Hospital in Milan. I work with small synthetic bacterial communities, asking how cross-feeding, public goods and cheating shape their composition, and what those interactions do to antibiotic tolerance.

I run growth experiments in plate readers, microfluidic chambers and continuous-culture bioreactors, and I write the analysis pipelines that turn those time series into growth rates, lineages and dose–response curves. The code is on the Software page.

I did my doctoral research in microbial ecology at Friedrich Schiller University Jena and the German Centre for Integrative Biodiversity Research (iDiv), where I tested ecological theory with synthetic bacterial communities and models of public-goods cheating. Before that I trained in ecology and evolution at Imperial College London and in biology at the University of Hull.

Recent

  • May 2026 Talk at Microfluidic Horizons 2026, where I also served on the organising committee.
  • Dec 2025 Poster at the BES Annual Meeting 2025.
  • Jul 2025 Talk and poster at FEMS Micro 2025: Stronger at the seams: antibiotic stress enhances amino acid leakage and cross-feeding.

Interests

  • Microbial interactions: cross-feeding, public goods, cooperation and cheating
  • Bacterial growth dynamics and antibiotic tolerance
  • Quantitative methods for growth-curve, timelapse and bioreactor data
  • Open, reproducible analysis tooling in R and Python