Cell Cycle Progression
Cell Cycle Progression - Related Videos
11:23
Measuring Cell Cycle Progression Kinetics with Metabolic Labeling and Flow Cytometry
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Cited by 13 •
2012
Tracking subtle changes in the progression and kinetics of cell cycle stages can be accomplished by use of a combination of metabolic labeling of nucleic acids with BrdU and total genomic DNA staining via Propidium Iodide. This method avoids the need of chemical synchronization of cycling cells, thereby preventing the introduction of non-specific DNA damage, which in turn affects cell cycle progression.
09:32
Cell Cycle Analysis
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2023
Cell cycle refers to the set of events through which a cell grows, replicates its genome, and ultimately divides into two daughter cells through the process of mitosis. Because the amount of DNA in a cell shows characteristic changes throughout the cycle, techniques known as cell cycle analysis can be used to separate a population of cells according to the different phases of cell cycle they are in, based on their varying DNA content.This video will cover the principles behind cell cycle...
08:52
Temporal Tracking of Cell Cycle Progression Using Flow Cytometry without the Need for Synchronization
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Cited by 7 •
2015
This protocol describes the use of bromodeoxyuridine (BrdU) uptake to permit the temporal tracking of cells that were in S phase at a specific point in time. Addition of DNA dyes and antibody labeling facilitates detailed analysis of the fate of the S phase cells at later times.
03:34
Cell Cycle Analysis: An Approach to Study Cell Cycle Regulation of miRNA-transfected Lung Cancer Cells
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2023
miRNA or microRNA are key regulators of cell cycle progression. This video describes a flow cytometry-based cell cycle analysis of lung cancer cells transfected with miRNA, to study the effect of miRNA on cell cycle regulation. Inhibition of proliferation by halting cell cycle progression has shown potential to be a promising approach for cancer treatment.
09:51
Assessing Cell Cycle Progression of Neural Stem and Progenitor Cells in the Mouse Developing Brain after Genotoxic Stress
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Cited by 2 •
2014
Administration of two analogs of thymidine, EdU and BrdU, in pregnant mice allows the analysis of cell cycle progression in neural and progenitor cells in the embryonic mouse brain. This method is useful to determine the effects of genotoxic stress, including ionizing radiation, during brain development.
FAQs
Cyclins regulate progression by activating cyclin-dependent kinases, or CDKs, at appropriate points in the cycle. These activated protein complexes promote movement through G1, S, G2, and M phases rather than allowing transitions to occur indiscriminately. Their timed activity coordinates growth, genetic-material duplication, and division, helping cells maintain an ordered sequence of events.
Checkpoints examine whether DNA remains intact, genetic material has been completely replicated, and chromosomes are properly attached before the cycle advances. These controls prevent a cell from carrying damaged DNA into later stages or distributing incompletely prepared chromosomes during division. As a result, checkpoint activity is closely linked to genomic stability and accurate daughter-cell formation.
The phases represent different cellular requirements that must occur in sequence. G1 supports growth, S duplicates genetic material, G2 follows replication and prepares for division, and M carries out chromosome separation and cell division. Distinguishing these stages allows researchers to determine where progression is delayed, whether replication is complete, and which control point may be failing.
Researchers can evaluate progression by asking whether cells move through each phase in order and whether checkpoints respond to DNA damage, incomplete replication, or faulty chromosome attachment. Abnormal advancement despite these problems indicates weakened regulation. Such findings help connect defective cell-cycle control with loss of genomic stability and the biological basis of uncontrolled proliferation.
Cancer biology focuses on how disrupted regulation can permit uncontrolled cell proliferation. Because cyclin-dependent kinase activity and checkpoint decisions govern major transitions, these mechanisms provide important subjects for drug-development research. Studying where regulation fails can clarify why abnormal growth occurs and can guide investigation of approaches intended to influence proliferation through cell-cycle control.
Coordinated progression enables cells to produce daughter cells during tissue growth and renewal, while controlled division also supports reproduction. In developmental and regenerative research, examining this coordination helps explain how cell populations expand without losing genomic stability. The same framework can reveal why impaired regulation may interfere with tissue maintenance or produce excessive proliferation.