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Updated: Dec 23, 2025

Analysis of Cell Cycle Position in Mammalian Cells
Published on: January 21, 2012
Mammalian cell cycle cyclins
Diego Martínez-Alonso1, Marcos Malumbres1
1Cell Division and Cancer Group, Spanish National Cancer Research Centre (CNIO) Madrid, Spain.
Abstract:
Proper progression throughout the cell division cycle depends on the expression level of a family of proteins known as cyclins, and the subsequent activation of cyclin-dependent kinases (Cdks). Among the numerous members of the mammalian cyclin family, only a few of them, cyclins A, B, C, D and E, are known to display critical roles in the cell cycle. These functions will be reviewed here with a special focus on their relevance in different cell types in vivo and their implications in human disease.
Insights
Cell cycle progression relies on cyclins and cyclin-dependent kinases (Cdks). This review focuses on key mammalian cyclins A, B, C, D, and E, their roles in various cell types, and links to human diseases.
Area of Science:
- Molecular Biology
- Cell Biology
- Biochemistry
Background:
- Cell division is a fundamental biological process.
- Cyclins and cyclin-dependent kinases (Cdks) are key regulators of the cell cycle.
- Dysregulation of cell cycle control is implicated in various diseases, including cancer.
Purpose of the Study:
- To review the critical roles of specific mammalian cyclins (A, B, C, D, and E) in cell cycle progression.
- To highlight the cell-type-specific functions of these cyclins in vivo.
- To discuss the implications of cyclin dysregulation in human diseases.
Main Methods:
- Literature review of existing research on cyclins and cell cycle regulation.
- Analysis of studies focusing on cyclins A, B, C, D, and E.
- Examination of in vivo data and human disease associations.
Main Results:
- Cyclins A, B, C, D, and E are essential regulators of the mammalian cell cycle.
- These cyclins exhibit distinct functions in different cell types and developmental stages.
- Aberrant cyclin expression is linked to the pathogenesis of numerous human diseases.
Conclusions:
- Understanding the precise roles of cyclins in cell cycle control is crucial for comprehending normal development and disease.
- Targeting cyclin-dependent pathways holds potential for therapeutic interventions in human diseases.
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