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Related Concept Videos

Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
DNA Damage can Stall the Cell Cycle02:36

DNA Damage can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
DNA Damage Can Stall the Cell Cycle02:36

DNA Damage Can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
Cancers Originate from Somatic Mutations in a Single Cell02:21

Cancers Originate from Somatic Mutations in a Single Cell

Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
Restarting Stalled Replication Forks02:37

Restarting Stalled Replication Forks

DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart, a...

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Related Experiment Video

Updated: May 18, 2026

Quantifying Replication Stress in Ovarian Cancer Cells Using Single-Stranded DNA Immunofluorescence
06:25

Quantifying Replication Stress in Ovarian Cancer Cells Using Single-Stranded DNA Immunofluorescence

Published on: February 10, 2023

Aberrant DNA replication in cancer.

Motoshi Suzuki1, Takashi Takahashi1

  • 1Division of Molecular Carcinogenesis, Nagoya University Graduate School of Medicine, Nagoya, Japan.

Mutation Research
|September 13, 2012
PubMed
Summary

Genomic instability, a key factor in cancer susceptibility, may arise from errors in DNA replication or translesion synthesis. This review explores the role of DNA replication proteins in cancer development.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Background:

  • Genomic instability is implicated in cancer susceptibility, but its origins are not fully understood.
  • A leading hypothesis links genomic instability to error-prone DNA replication or translesion DNA synthesis.
  • While mutations in core DNA replication proteins are found in cancers, severe defects are typically lethal.

Purpose of the Study:

  • To review and discuss the potential involvement of DNA replication proteins in carcinogenesis.
  • To explore the mechanisms by which DNA replication fidelity impacts cancer development.
  • To synthesize current understanding of DNA replication's role in cancer susceptibility.

Main Methods:

  • Literature review of recent developments in DNA replication and cancer research.

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Visualization of DNA Replication in the Vertebrate Model System DT40 using the DNA Fiber Technique
07:18

Visualization of DNA Replication in the Vertebrate Model System DT40 using the DNA Fiber Technique

Published on: October 27, 2011

Related Experiment Videos

Last Updated: May 18, 2026

Quantifying Replication Stress in Ovarian Cancer Cells Using Single-Stranded DNA Immunofluorescence
06:25

Quantifying Replication Stress in Ovarian Cancer Cells Using Single-Stranded DNA Immunofluorescence

Published on: February 10, 2023

Visualization of DNA Replication in the Vertebrate Model System DT40 using the DNA Fiber Technique
07:18

Visualization of DNA Replication in the Vertebrate Model System DT40 using the DNA Fiber Technique

Published on: October 27, 2011

  • Analysis of existing data on mutations in DNA replication proteins and their association with cancer.
  • Discussion of hypotheses linking DNA replication fidelity to genomic instability.

    • Main Results:

    • Core DNA replication proteins, despite their essential role, can be implicated in cancer when their function is compromised.
    • Error-prone DNA replication and aberrant translesion synthesis are plausible contributors to genomic instability.
    • The precise mechanisms linking specific replication protein alterations to carcinogenesis require further investigation.

    Conclusions:

    • DNA replication proteins may play a significant, albeit complex, role in the development of cancer.
    • Understanding these roles is crucial for developing novel cancer prevention and treatment strategies.
    • Further research is needed to elucidate the specific pathways and protein functions involved in replication-associated carcinogenesis.