Markus Ralser group

Dynamic and evolution of metabolic networks

Metabolism has been for a long time as a static series of biochemical reactions. Recent research however reveals that cellular metabolism is indeed highly dynamic, and is implicated in many biologically important phenomena, such as aging, cellular robustness, and adaptation to ever changing environments. These properties bring metabolism center-stage bot for developing therapies against cancer and neurodegenerative disorders and for understanding the ageing process.

We investigate regulatory functions of the metabolic network and how its dynamics is maintained. A model situation where the metabolome has regulatory function is the adaptation to stress conditions. When cells are exposed to oxidants, when cells age or when a cancer cell starts proliferation, their metabolism changes. We found that under those conditions the metabolic network can reconfigure very quickly, and that metabolism can temporarily adjust without requiring regulation at the transcriptome and proteome layer. There is also evidence that these quick metabolic adjustments can be involved in the induction of transcriptional stress responses.

We address these questions often in the yeast Saccharomyces cerevisiae. Working with this single-cellular eukaryote removes some complexity from our investigations, as a plethora of genetic and biochemical techniques are available, reducing bias resulting from altered metabolic activity that is found in cell culture systems, allowing us to work with hundreds of mutants in parallel. To study the metabolic network, we use quantitative mass spectrometry coupled to high-pressure and/or nano-flow liquid chromatography for targeted analysis of proteins and small molecules.

Our research team was founded as the 'Molecular Biology of Metabolism group' at the Department of Vertebrate Genomics, Max Planck Institute for Molecular Genetics in Berlin in 2007. It then moved to the Department of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge. The laboratory also has a team based in Dept of Systems Biology Centre, University of Cambridge.

Selected publications

Ralser group

Dr Markus Ralser

Markus Ralser

Recent publications

Our research themes

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Markus is a new group leader, currently located at the University of Cambridge and will be joining NIMR in April 2014. 

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