Q UANTIFYING METABOLIC FLUXES IN CANCER AND STEM CELLS An integrative approach monitoring metabolic reprogramming Christin Zasada Kempa Lab - Integrative.

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Presentation transcript:

Q UANTIFYING METABOLIC FLUXES IN CANCER AND STEM CELLS An integrative approach monitoring metabolic reprogramming Christin Zasada Kempa Lab - Integrative Proteomics & Metabolomics

Genome-regulatory code 2 Genomics three billion DNA base pairs 20’ ’000 protein-coding genes Transcriptomics 2 % of the genome Proteomics ~ Metabolomics

Reprogramming of metabolism 3 Warburg effect regulation CCM enzymes hypoxia nutrient availability carbon re-routing oncogenic regulation mitochondrial activity

Quantitative information turns functional 4 Proteomics pulsed stable isotope resolved metabolomics (pSIRM) LC-MS/MS label-free, SILAC quantification ~ 3500 proteins GC-MS approach identification ~ 100 metabolites absolute quantification ~ 40 metabolites application of stable isotopes —> time-resolved —> position-specific —> indirect measurement of flux

Non-stationary metabolic flux analysis 5 Model parameter 168 labeling data point 5 measured rates 14 measured pool sizes in cooperation with Katharina Nöh and Sebastian Niedenführ Forschungszentrum Jülich GmBH Niedenführ S, Nöh K, Wiechert W Current Opinion in Biotechnology 2015, 34:82–90 Flux information InputOutput Pathways coverage Glycolysis TCA-Cycle Pentose-Phosphate Pathway Glutaminolysis Amino acid synthesis Biosynthesis Time courses for: Glucose Glutamine metabolic steady & isotopic non-stationary

6 GC-MS fragment mapping to molecule level

Monitoring metabolic reprogramming - experimental setup 7 13 C-Glucose 13 C-Glutamine 13 C-Pyruvate Proteomics hESC-DFhESC MDA-MB231 DFiPSC HFF1 NFH2 BJ1 in cooperation with R. Bucowiecki and A. Prigione (MDC, Berlin, Germany)

Re-arrangement of carbon fate 8

Routing of 13 C-Pyruvic acid 9 LFQ Int

Summary 10

Acknowledgments 11 Alessandro Prigione Raul Bukowiecki MDC Berlin-Buch, Germany Katharina Nöh Sebastian Niedenführ Forschungszentrum Jülich Germany … thank you for your attention