Related Experiment Video
Updated: Sep 5, 2025

13:10
Detection and Visualization of DNA Damage-induced Protein Complexes in Suspension Cell Cultures Using the Proximity Ligation Assay
Published on: June 9, 2017
10.1K
Molecular Link between DNA Damage Response and Microtubule Dynamics.
1Department of Pharmacology, Chonnam National University Medical School, Gwangju 58128, Korea.
International Journal of Molecular Sciences
|July 9, 2022
Summary
Microtubule dynamics are crucial for maintaining genome stability during interphase. This review explores how microtubules aid in DNA damage response and repair, highlighting their role in nuclear organization and DNA mobility.
Area of Science:
- Cell Biology
- Genetics
- Molecular Biology
Background:
- Microtubules are key cytoskeletal components involved in vital cellular processes.
- Emerging evidence links microtubule networks to genome maintenance during interphase.
- Understanding this connection is crucial for comprehending cellular responses to stress.
Purpose of the Study:
- To review recent advancements in the role of microtubule dynamics in DNA damage response and repair.
- To elucidate the interplay between DNA damage checkpoints and microtubule organization.
- To discuss the contribution of microtubule networks to nuclear remodeling and DNA repair.
Main Methods:
- Literature review of recent studies on microtubule dynamics and genome maintenance.
- Analysis of how DNA damage checkpoints influence microtubule stability.
- Examination of microtubule involvement in nuclear structural changes post-DNA damage.
Main Results:
- DNA damage checkpoints actively regulate microtubule organization and stability.
- Microtubule networks facilitate nuclear remodeling, altering chromosome organization after DNA damage.
- Microtubule dynamics enhance the mobility of damaged DNA, promoting repair.
Conclusions:
- Microtubule dynamics are integral to genome organization and stability during interphase.
- The cytoskeleton, specifically microtubules, plays a significant role in cellular defense against DNA damage.
- Further research into microtubule-DNA interactions can reveal new therapeutic targets for genome instability disorders.
Related Concept Videos
Microtubule Instability
5.2K
Microtubules are hollow cylindrical filaments having a diameter of approximately 25 nm and a length that varies from 200 nm to 25 μm. GTP-bound tubulin subunits form αβ-heterodimers for microtubule assembly. These core building blocks interact longitudinally, polymerizing into protofilaments. The protofilaments then interact with one another through lateral bonding forces to form stable cylindrical microtubules. These cylindrical filaments are dynamic as they undergo repeated...
5.2K
Destabilization of Microtubules
2.8K
The destabilization of microtubules can occur during different stages of the microtubule lifecycle, such as nucleation or elongation. It can take place at either end of the microtubule or in the microtubule lattices as a whole. The lifespan of individual microtubules within a cell varies according to the cell type and stage of the cell cycle. During interphase, the lifespan of the microtubule is about 30 minutes, while during cell division, it is about 15 minutes. In axonal microtubules of...
2.8K
DNA Damage can Stall the Cell Cycle
9.3K
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...
9.3K
Drugs that Stabilize Microtubules
2.1K
Microtubules are dynamic structures that undergo cycles of catastrophe and rescue. The microtubules play a central role in cell division by forming the spindle apparatus for segregating the chromosomes. This makes them ideal targets for regulating dividing cells in tumors and malignant cancer cells. Microtubule stabilizing drugs help stabilize the microtubule formation and promote its polymerization. Paclitaxel was the first microtubule stabilizing agent used as anticancer drug in chemotherapy...
2.1K
Microtubule Formation
5.9K
Microtubules are dynamic structures that undergo continuous assembly and disassembly. They originate from specialized multi-protein complexes known as microtubule organizing centers or MTOCs. Within the MTOC, the point of origin of the microtubule is known as the minus end, while the end radiating outward is the plus end. Microtubules serve two primary functions — the organization of spindle complexes to separate sister chromatids during mitotic or meiotic cell division and the formation...
5.9K
Anaphase A and B
4.2K
Microtubules form through the end-to-end polymerization of tubulin heterodimers. Kinetochore microtubules originate from the spindle poles, and their plus-ends connect with the kinetochores on sister-chromatids. Ndc80 protein complexes, present on the kinetochore, form low-affinity links with the plus end of these kinetochore microtubules.
Plus-end depolymerization releases tubulin heterodimers from the terminal region of the microtubule. As tubulin subunits are lost, the Ndc80 complexes detach...
Plus-end depolymerization releases tubulin heterodimers from the terminal region of the microtubule. As tubulin subunits are lost, the Ndc80 complexes detach...
4.2K

