The effect of the LysoPC-induced endothelial cell conditioned medium on proliferating cell nuclear antigen expression of the calf thoracic aorta smooth muscle cells.
- Author:
Honglian ZHOU
1
;
Jihua YAO
;
Shu YU
Author Information
1. Department of Integration, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030.
- Publication Type:Journal Article
- MeSH:
Animals;
Aorta;
cytology;
Cattle;
Cell Division;
drug effects;
Cells, Cultured;
Culture Media, Conditioned;
Lysophosphatidylcholines;
pharmacology;
Muscle, Smooth, Vascular;
cytology;
metabolism;
Platelet-Derived Growth Factor;
metabolism;
Proliferating Cell Nuclear Antigen;
metabolism
- From:
Journal of Huazhong University of Science and Technology (Medical Sciences)
2002;22(1):28-30
- CountryChina
- Language:English
-
Abstract:
In order to study the effect of and mechanism of lysophosphatidylcholine (LysoPC) on proliferation of the calf thoracic aorta smooth muscle cells (ASMCs), the ASMCs were used to observe the effects of LysoPC-induced endothelial cell conditioned medium on the DNA content and proliferating cell nuclear antigen (PCNA) expression in the calf thoracic ASMCs by flow cytometry and Western Blot technique. It was found that LysoPC-induced endothelial cell conditioned medium could significantly promote PCNA expression of the calf ASMCs, induce the converting of ASMCs from G0/G1 phase to S phase of DNA synthesis, and increase the tyrosine phosphorylation protein expression. Tyrosine protein kinase inhibitor (TPKi) RG50864 could obviously inhibit proliferation of LysoPC-induced ASMCs in a dose-dependence manner. The results indicated that the effect of LysoPC promoting the proliferation of ASMCs is partly evoked by endothelial cell derived growth factors such as PDGF and so on.
