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Published on: January 18, 2017
[Aspirin inhibits proliferation and expression of p44/42 MAPK phosphorylation in vascular endothelial cells]
Hui Liu1, Ping Ouyang, Zhen-hua Liu
1Department of Neurology, Zhujiang Hospital, First Military Medical University, Guangzhou 510282, China.
Objective:
To observe the effects of aspirin on vascular endothelial cell proliferation in vitro and on the activity of p44/p42 mitogen-activated protein kinase (MAPK) phosphorylation.
Methods:
ECV 304 cells cultured in vitro were treated with aspirin (1, 2, 5, and 10 mmol/L, respectively) and observed for their proliferation in comparison with the control group. The ratio of cell proliferation was determined by non-radioactive MTS/PES assay. The expression of phosphorylated p44/42 MAPK protein was evaluated by the immunoblotting technique using anti-p44/42 phospho-MAPK antibody.
Results:
The proliferation rate of the endothelial cell was 1.533+/-0.286 in the control group, and 0.459+/-0.107, 0.708+/-0.125, 0.953+/-0.149 and 1.253+/-0.225 in aspirin-treated groups corresponding to aspirin concentrations of 10, 5, 2 and 1 mmol/L, respectively. It was shown that aspirin significantly inhibited the vascular endothelial cell proliferation at the concentration above 1 mmol/L (P<0.05), in a dose-dependent manner as compared with the control group (P<0.05). The expression of phosphorylated p44/42 MAPK protein was significantly inhibited by aspirin.
Conclusions:
Aspirin decreases vascular endothelial cell proliferation, and arrest of endothelial cell proliferation may be an important mechanism by which aspirin produces protective effect against acute coronary disease.
Insights
Aspirin significantly inhibits vascular endothelial cell proliferation in a dose-dependent manner. This anti-proliferative effect, linked to reduced p44/p42 MAPK phosphorylation, may explain aspirin's protective role in acute coronary disease.
Area of Science:
- Cardiovascular Pharmacology
- Cell Biology
- Molecular Medicine
Context:
- Vascular endothelial cells are crucial for blood vessel health.
- Aspirin is widely used for cardiovascular disease prevention.
- Understanding aspirin's cellular mechanisms is vital.
Purpose:
- To investigate aspirin's effect on endothelial cell proliferation in vitro.
- To examine aspirin's impact on p44/p42 mitogen-activated protein kinase (MAPK) phosphorylation.
Summary:
- Aspirin significantly inhibited ECV 304 cell proliferation in a dose-dependent manner above 1 mmol/L.
- Aspirin treatment led to a significant reduction in phosphorylated p44/p42 MAPK protein expression.
- Results indicate aspirin's anti-proliferative action on endothelial cells.
Impact:
- Aspirin's ability to decrease endothelial cell proliferation is a key finding.
- This mechanism may contribute to aspirin's protective effects against acute coronary disease.
- Provides insight into the cellular basis of aspirin's therapeutic benefits.
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