Cell cycle–regulated gene expression

Cell cycle–regulated gene expression refers to the periodic and phase-specific activation and repression of sets of genes as cells progress through different phases (G1, S, G2, M) of the cell cycle[1][3][4]. This program is orchestrated mainly by the activities of transcription factors—such as E2F and FOXM1—whose own expression and activity are also cyclically regulated, and by the action of cyclins and cyclin-dependent kinases (CDKs), which control major cell cycle transitions[1][3][4][5]. Cell cycle–regulated gene expression is essential for processes including DNA replication, chromosome segregation, and cell division. Disruption of this regulation underlies uncontrolled cell proliferation seen in cancer and other diseases, and is a major focus of cancer biology research[2][3][4]. However, "cell cycle–regulated gene expression" is a process and not a single target molecule for drug action. Key context: - Numerous individual targets (e.g., CDKs, E2F transcription factors, cyclins) can be targets for drugs, but the term "cell cycle–regulated gene expression" encompasses all cell cycle-dependent gene expression as a process, lacking the specificity required for a canonical target entry[1][2][3][4]. - Drugs such as CDK inhibitors act on particular enzymes or regulators within the cell cycle, not on "cell cycle–regulated gene expression" as a distinct entity[1][3][4]. If you need structured information on a specific molecular target involved in cell cycle–regulated gene expression, please specify (e.g., "Cyclin-dependent kinase 1", "E2F1", "FOXM1").