Related Experiment Video
Updated: Jun 1, 2026
12:02
Studying Cell Cycle-regulated Gene Expression by Two Complementary Cell Synchronization Protocols
Published on: June 6, 2017
Control of DNA replication by cyclin-dependent kinases in development
1IGMM, CNRS UMR 5535, 1919 Route de Mende, 34293 Montpellier, France. daniel.fisher@igmm.cnrs.fr
Results and Problems in Cell Differentiation
|June 2, 2011
Summary
Cyclin-dependent kinases (CDKs) control DNA replication initiation in eukaryotes. This review explores how CDKs regulate replication origins during development, impacting cell proliferation and gene expression.
Area of Science:
- Molecular Biology
- Developmental Biology
- Cell Biology
Background:
- Cyclin-dependent kinases (CDKs) are essential for DNA replication initiation in all eukaryotes.
- Replication origin firing is regulated by CDKs at multiple levels, varying with cell type and developmental stage.
- Early animal development features rapid cell cycling, transcriptional repression, and closely spaced, non-specific replication origins.
Purpose of the Study:
- To review the multifaceted roles of CDKs in controlling DNA replication.
- To examine how CDK activity influences replication origin firing and pre-replication complex (pre-RC) formation.
- To discuss the implications of CDK functions in developmental processes.
Main Methods:
- Literature review of existing research on CDKs and DNA replication.
- Analysis of CDK roles in different eukaryotic cell types and developmental stages.
- Examination of CDK involvement in pre-RC licensing, chromatin remodeling, and origin organization.
Main Results:
- CDKs promote the conversion of licensed pre-RCs to active initiation complexes.
- CDKs can also influence pre-RC formation, replication gene transcription, and chromatin structure.
- CDK1 and CDK2 exhibit overlapping but not entirely redundant functions in DNA replication.
- CDK regulation of replication origins is modified during development.
Conclusions:
- CDKs play a critical and complex role in regulating DNA replication throughout eukaryotic development.
- Understanding CDK functions is crucial for comprehending cell proliferation control and developmental transitions.
- Further research into CDK redundancy and specificity will illuminate developmental mechanisms.
Related Concept Videos
02:38S-Cdk Initiates DNA Replication
The cell cycle is a series of events leading to DNA duplication followed by the division of cell content to form two daughter cells. The cell cycle progresses in four stages—the cell increases in size (gap 1 or G1-phase), duplicates its DNA (synthesis or S-phase), prepares to divide (gap 2 or G2-phase), and divides (mitosis or M-phase).
Two states at the origin of replication
In eukaryotes, the initiation of replication occurs at many sites on the chromosomes, called the origins of replication.
Two states at the origin of replication
In eukaryotes, the initiation of replication occurs at many sites on the chromosomes, called the origins of replication.
02:38S-Cdk Initiates DNA Replication
The cell cycle is a series of events leading to DNA duplication followed by the division of cell content to form two daughter cells. The cell cycle progresses in four stages—the cell increases in size (gap 1 or G1-phase), duplicates its DNA (synthesis or S-phase), prepares to divide (gap 2 or G2-phase), and divides (mitosis or M-phase).
Two states at the origin of replication
In eukaryotes, the initiation of replication occurs at many sites on the chromosomes, called the origins of replication.
Two states at the origin of replication
In eukaryotes, the initiation of replication occurs at many sites on the chromosomes, called the origins of replication.
02:11The Cell Cycle Control System
The cell cycle is an organized set of events that leads the cell to divide into two daughter cells, each containing chromosomes identical to the parent cell. It is the cell cycle that leads to the formation of an entire organism from a single-cell zygote. Besides, cell division also functions in the renewal or repair of tissues in adult multicellular eukaryotes. For example, in the bone marrow, the stem cells divide to form new blood cells. Although essential for several functions, cell...
01:28The Cell Cycle Control System
The cell cycle regulation directs how a cell proceeds from one phase to the next and begins mitosis. The cell cycle control system includes intracellular regulatory molecules and external triggers. They provide "stop" or "advance" signals and operate at specific cell cycle stages termed checkpoints to ensure that a particular process is completed before the cell advances to the next phase.
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and function at the cell...
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and function at the cell...
02:11The Cell Cycle Control System
The cell cycle is an organized set of events that leads the cell to divide into two daughter cells, each containing chromosomes identical to the parent cell. It is the cell cycle that leads to the formation of an entire organism from a single-cell zygote. Besides, cell division also functions in the renewal or repair of tissues in adult multicellular eukaryotes. For example, in the bone marrow, the stem cells divide to form new blood cells. Although essential for several functions, cell...
02:34Inhibition of Cdk Activity
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...