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Mouse 24p3 protein has an effect on L929 cell viability
Pei-Tzu Li1, Ying-Chu Lee, Namasivayam Elangovan
1Institute of Biochemical Science, College of Life Science, National Taiwan University, Taipei, Taiwan.
International Journal of Biological Sciences
|February 17, 2007
Summary
Mouse uterine 24p3 protein causes cell cycle arrest and DNA damage in L929 cells. This leads to significant cell death, indicating a potential role in regulating cell fate.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Mouse uterine 24p3 protein is an acute phase protein secreted by L929 cells.
- Dexamethasone stimulation induces 24p3 protein expression in L929 cells.
Purpose of the Study:
- To investigate the effects of 24p3 protein on L929 cell morphology, viability, and cell cycle progression.
- To determine the mechanism of cell death induced by 24p3 protein.
Main Methods:
- L929 cells were cultured in a medium supplemented with 24p3 protein.
- Cell cycle progression was analyzed by observing S-phase accumulation.
- Cell viability and DNA damage were assessed using PI/annexin V double staining and cell counting.
- Reactive oxygen species (ROS) levels were measured.
Main Results:
- Exposure to 24p3 protein for 72 hours resulted in significant S-phase arrest, blocking cell cycle progression.
- Prolonged exposure (96 hours) led to decreased cell numbers and increased DNA damage.
- PI/annexin V staining confirmed significant cell death after 96 hours of incubation with 24p3 protein.
- Increased ROS levels were observed.
Conclusions:
- 24p3 protein induces S-phase arrest in the cell cycle of L929 cells.
- This cell cycle arrest leads to DNA damage and subsequent cell death.
- 24p3 protein plays a role in L929 cell death pathways.
