Temporal segregation of biosynthetic processes is responsible for metabolic oscillations during the budding yeast cell cycle

Temporal segregation of biosynthetic processes is responsible for metabolic oscillations during the budding yeast cell cycle

Takhaveev, V.
Özsezen, S.
Smith, E.N.
Zylstra, A.
Chaillet, M.L.
Chen, H.
Papagiannakis, A.
Milias-Argeitis, A.
Heinemann, M.

2023

Many cell biological and biochemical mechanisms controlling the fundamental process of eukaryotic cell division have been identified; however, the temporal dynamics of biosynthetic processes during the cell division cycle are still elusive. Here, we show that key biosynthetic processes are temporally segregated along the cell cycle. Using budding yeast as a model and single-cell methods to dynamically measure metabolic activity, we observe two peaks in protein synthesis, in the G1 and S/G2/M phase, whereas lipid and polysaccharide synthesis peaks only once, during the S/G2/M phase. Integrating the inferred biosynthetic rates into a thermodynamic-stoichiometric metabolic model, we find that this temporal segregation in biosynthetic processes causes flux changes in primary metabolism, with an acceleration of glucose-uptake flux in G1 and phase-shifted oscillations of oxygen and carbon dioxide exchanges. Through experimental validation of the model predictions, we demonstrate that primary metabolism oscillates with cell-cycle periodicity to satisfy the changing demands of biosynthetic processes exhibiting unexpected dynamics during the cell cycle. © 2023. The Author(s).

Biological Transport
Cell Cycle
Cell Division
Oxygen
Saccharomycetales

http://resolver.tudelft.nl/uuid:bc0dff81-6bfd-4a69-93b6-84cfaff883ac

https://doi.org/10.1038/s42255-023-00741-x

982833

Nature Metabolism, 5 (5), 294-313

642738, 847675/European Commission (EC) VI.C.192.003/Nederlandse Organisatie voor Wetenschappelijk Onderzoek (Netherlands Organisation for Scientific Research)

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