Related Experiment Video
Updated: Aug 23, 2025
06:25
Quantifying Replication Stress in Ovarian Cancer Cells Using Single-Stranded DNA Immunofluorescence
Published on: February 10, 2023
2.1K
Leveraging the replication stress response to optimize cancer therapy
Emily Cybulla1,2, Alessandro Vindigni3
1Division of Oncology, Department of Medicine, Washington University in St. Louis, St. Louis, MO, USA.
Nature Reviews. Cancer
|November 3, 2022
Summary
DNA damage tolerance pathways ensure genetic stability during replication stress. Understanding these pathways and their targets can improve cancer therapy response and biomarker discovery.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- High-fidelity DNA replication is essential for transmitting genetic information.
- DNA damage tolerance (DDT) pathways activate during genotoxic stress to maintain replication fork progression.
- Key DDT pathways include translesion DNA synthesis, template switching, and repriming.
Purpose of the Study:
- To review the impact of DDT pathways on genome stability.
- To explore the link between DDT, tumorigenesis, and cancer therapy response.
- To identify DDT factors as potential cancer therapeutic targets.
Main Methods:
- Literature review of DNA damage tolerance mechanisms.
- Analysis of the connection between DDT pathways and cancer development.
- Evaluation of DDT factors as potential targets for cancer therapy.
Main Results:
- DDT pathways significantly influence genome stability.
- Accumulation of single-strand DNA gaps affects cancer treatment outcomes.
- Specific DDT factors are emerging as promising cancer targets.
Conclusions:
- DDT mechanisms play a crucial role in genome stability and cancer progression.
- Targeting DDT factors offers potential for novel cancer therapies.
- Understanding DDT consequences can lead to improved cancer biomarkers and refined treatment strategies.
Related Concept Videos
02:56Treatment Resistant Cancers
3.4K
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.4K
02:50Combination Therapies and Personalized Medicine
5.0K
Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
5.0K
02:57Targeted Cancer Therapies
7.8K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.8K
02:49Cancer Therapies
7.9K
Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
7.9K
01:02The DNA Replication Fork
36.5K
An organism’s genome needs to be duplicated in an efficient and error-free manner for its growth and survival. The replication fork is a Y-shaped active region where two strands of DNA are separated and replicated continuously. The coupling of DNA unzipping and complementary strand synthesis is a characteristic feature of a replication fork. Organisms with small circular DNA, such as E. coli, often have a single origin of replication; therefore, they have only two replication...
36.5K
02:40Cancer Stem Cells and Tumor Maintenance
5.0K
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
5.0K