Cell Growth and the Cell Cycle: New Insights About Persistent Questions
Overview
Cell Biology
Molecular Biology
Authors
Affiliations
Before a cell divides into two daughter cells, it typically doubles not only its DNA, but also its mass. Numerous studies in cells ranging from yeast to mammals have shown that cellular growth, stimulated by nutrients and/or growth factor signaling, is a prerequisite for cell cycle progression in most types of cells. The textbook view of growth-regulated cell cycles is that growth signaling activates the transcription of G1 Cyclin genes to induce cell proliferation, and also stimulates anabolic metabolism and cell growth in parallel. However, genetic knockout tests in model organisms indicate that this is not the whole story, and new studies show that additional, "smarter" mechanisms help to coordinate the cell cycle with growth itself. Here we summarize recent advances in this field, and discuss current models in which growth signaling regulates cell proliferation by targeting core cell cycle regulators via non-transcriptional mechanisms.
Gan G, Zhou X, Zheng Q, Gao X, Chen X, Zhang H Transl Oncol. 2025; 52:102278.
PMID: 39799750 PMC: 11770551. DOI: 10.1016/j.tranon.2025.102278.
Distinct effects of CDK8 module subunits on cellular growth and proliferation in Drosophila.
Li X, Liu M, Xing Y, Niu Y, Liu T, Sun J Development. 2024; 151(23).
PMID: 39531377 PMC: 11634032. DOI: 10.1242/dev.203111.
Lee M, Jui J, Sahu A, Goldman D Development. 2024; 151(14).
PMID: 38984586 PMC: 11369687. DOI: 10.1242/dev.203062.
Eukaryotic cell size regulation and its implications for cellular function and dysfunction.
Chadha Y, Khurana A, Schmoller K Physiol Rev. 2024; 104(4):1679-1717.
PMID: 38900644 PMC: 11495193. DOI: 10.1152/physrev.00046.2023.
Cell cycle variants during Drosophila male accessory gland development.
Box A, Ramesh N, Nandakumar S, Church S, Prasad D, Afrakhteh A G3 (Bethesda). 2024; 14(7).
PMID: 38683731 PMC: 11228851. DOI: 10.1093/g3journal/jkae089.