Cell Growth and Division Dynamics in Prokaryotic and Eukaryotic Systems

Cell growth and division constitute fundamental processes by which organisms maintain homeostasis, adapt to environmental cues and propagate genetic material. In prokaryotes, cell enlargement and proliferation are tightly coordinated by spatial and temporal regulators that monitor cell size and ensure the organised formation of a division septum. Central to this process is the polymerisation of the tubulin-like protein FtsZ at mid-cell, whose assembly is antagonised by membrane-associated Min proteins to prevent aberrant ring formation at poles. Bacterial cells thus adopt an “adder” strategy in which a constant volume increment between birth and division yields narrow size distributions under varied nutrient conditions. By contrast, eukaryotic cells progress through distinct cell-cycle phases (G1, S, G2 and M), orchestrated by cyclin-dependent kinases and checkpoints that integrate growth signals and DNA replication status. Biosynthetic activities such as protein and lipid synthesis are dynamically regulated across the cycle, giving rise to metabolic oscillations that match resource allocation to changing demands. In both kingdoms, gene expression scales with cell volume through mechanisms that balance transcriptional and translational capacity against genome copy number, while extreme deviations from optimal size can dilute cytoplasmic content, impair signal transduction and contribute to senescence. A unified view of growth-division dynamics thus embraces conserved biochemical modules alongside system-specific strategies that secure size homeostasis, coordinate metabolism and underlie applications in antibiotic development, tissue engineering and ageing research.

Research from Nature Portfolio

Recent studies have demonstrated that altering the relative expression of Min proteins in Escherichia coli modulates the timing and location of FtsZ ring formation, driving a reproducible shift to a new steady-state cell size. Overexpression of one Min component delays the onset of septal ring assembly until the cell reaches the adjusted threshold volume, thereby illustrating how spatial inhibitors contribute to size control and population-level variability in division timing. In a eukaryotic model, single-cell measurements in budding yeast have revealed that key biosynthetic processes are temporally segregated: protein synthesis peaks twice during G1 and S/G2/M phases, whereas lipid and polysaccharide production occur predominantly in S/G2/M. Integrating these dynamic rates into a thermodynamic-stoichiometric framework uncovered phase-specific flux changes in central metabolism, including accelerated glucose uptake in G1 and phase-shifted respiration cycles, thereby linking metabolic oscillations to the changing demands of cell-cycle progression.

Cell Growth and Division Dynamics in Prokaryotic and Eukaryotic Systems publication trend

The graph below shows the total number of articles in cell growth and division dynamics in prokaryotic and eukaryotic systems across all publications each year (not limited to Nature Index journals).

Technical terms

FtsZ: A tubulin-like GTPase that polymerises at the future division site in bacteria to form the cytokinetic Z-ring.

Min proteins: Membrane-associated inhibitors in bacteria that oscillate pole to pole to prevent premature FtsZ assembly at cell ends.

Biosynthetic oscillations: Phase-dependent fluctuations in metabolic fluxes and macromolecule synthesis aligned with cell-cycle stages.

Transcriptional burst frequency: The rate at which a gene transitions into an active state to produce RNA transcripts in pulses.

Cytoplasmic dilution: Reduction in intracellular macromolecule concentration caused by excessive volume increase without proportional biosynthesis.

References

1. Bacterial cell-size changes resulting from altering the relative expression of Min proteins. Nature Communications (2023).
2. Temporal segregation of biosynthetic processes is responsible for metabolic oscillations during the budding yeast cell cycle. Nature Metabolism (2023).
3. Cell-cycle dependence of bursty gene expression: insights from fitting mechanistic models to single-cell RNA-seq data. Nucleic Acids Research (2025).
4. Inflating bacterial cells by increased protein synthesis. Molecular Systems Biology (2015).
5. Excessive Cell Growth Causes Cytoplasm Dilution And Contributes to Senescence. Cell (2019).
6. Homeostasis of protein and mRNA concentrations in growing cells. Nature Communications (2018).