Cell Cycle Regulation Mechanisms in Eukaryotic Systems
Summary
The eukaryotic cell cycle is orchestrated by a series of tightly regulated transitions that ensure faithful replication and segregation of genetic material. Progression through G1, S, G2 and M phases is governed by the periodic activation and inactivation of cyclin-dependent kinases (CDKs) in complex with their cyclin partners. Phosphorylation and dephosphorylation events, mediated by specific kinases and phosphatases, establish irreversible switches and feedback loops that drive entry into DNA synthesis and mitosis. Ubiquitin-mediated proteolysis of cyclins via the anaphase-promoting complex (APC/C) ensures orderly exit from mitosis and reset of the system. Checkpoint mechanisms monitor DNA integrity and spindle assembly, halting progression if errors are detected. In addition, ancillary regulators such as polo-like kinases, Aurora kinases and the CDC25 phosphatases fine-tune mitotic onset and chromosome alignment. Together, these interlinked networks provide robustness against fluctuations in signalling, preserve genomic stability and prevent uncontrolled proliferation. Dysregulation of cell cycle controls underlies numerous pathologies, notably cancer, and has informed the development of targeted inhibitors that have entered clinical use. Contemporary research continues to elucidate how cell-cycle modules integrate environmental cues, metabolic status and developmental signals to coordinate tissue growth, regeneration and stem-cell differentiation on a global scale.
Research from Nature Portfolio
No recent Nature Portfolio content available.
Cell Cycle Regulation Mechanisms in Eukaryotic Systems publication trend
The graph below shows the total number of articles in cell cycle regulation mechanisms in eukaryotic systems across all publications each year (not limited to Nature Index journals).
Technical terms
Cyclin-dependent kinase (CDK): A serine/threonine kinase whose activity is regulated by binding to cyclin subunits and by phosphorylation, central to driving cell-cycle transitions.
Cyclin B1: A regulatory subunit that binds to CDK1 (p34cdc2) to form the maturation-promoting factor (MPF), essential for entry into mitosis.
Maturation-promoting factor (MPF): The active CDK1–Cyclin B complex that triggers chromatin condensation, nuclear envelope breakdown and spindle assembly at the onset of mitosis.
Phosphorylation: The reversible covalent addition of a phosphate group to specific amino acids on proteins, used to control enzyme activity and protein interactions.
Anaphase-promoting complex (APC/C): A multi-subunit E3 ubiquitin ligase that targets cyclins and securin for degradation, enabling sister-chromatid separation and mitotic exit.
References
- A CDK activity buffer ensures mitotic completion. Journal of Cell Science (2022).
- Requirement for CCNB1 in mouse spermatogenesis. Cell Death & Disease (2017).
About these summaries
This Nature Research Intelligence Topic summary is created with the cited references and a large language model. We take care to ground generated text with facts, and have systems in place to gain human feedback on the overall quality of the process in line with our AI principles. We strive to create accurate and useful summaries for people unfamiliar with the research topic and that supports this goal. These pages are a beta release and will be updated as we learn how best to help people gain value from a research topic summary.
Turn complex research questions into confident strategic decisions
When you're under pressure to set direction, justify investment, or understand your competitive position, you need more than raw data — you need trusted insights you can act on.
Benchmark your performance against global peers using robust, methodologically sound analysis.
Combine quantitative metrics with qualitative expert insight to uncover strengths, gaps and emerging opportunities.
Gain tailored, decision-ready recommendations aligned to your strategic priorities.
Talk to us to learn more about our data dashboards and bespoke strategy reports.
Grow research skills, confidence and careers with training built for every stage of the research lifecycle.
Developed with Nature Portfolio journal Editors and internationally renowned experts. Discover three ways to learn:
Self-paced, online courses in convenient bite-sized units, covering key skills across scientific writing, publishing, grant writing, data analysis, and more.
Expert trainer-led workshops with hands-on exercises and real-time feedback across core research skills, delivered via interactive group sessions.
Editor-led workshops combining core principles in writing and publishing, personalised 1:1 feedback from Nature Portfolio Editors and hands-on exercises.
Explore course catalogues and workshop agendas, enquire about the options or request institutional pricing.