The effect of coculture with human smooth muscle cells on the proliferation, the IL-1 beta secretion, the PDGF production and tube formation of human aortic endothelial cells.
Endothelial cells (ECs) and smooth muscle cells (SMCs), which are the major component cells of blood vessels, produce various bioactive substances and communicate with each other through them. Although several studies of the interaction between ECs and SMCs have been reported, the effect of coculture with SMCs on ECs is still obscure. To clarify the interaction of ECs and SMCs, we examined the effect of coculture with SMCs on the proliferation, the IL-1 beta secretion, the PDGF production and tube formation of ECs, using the coculture model: transferable wells and collagen gel. IL-1 and PDGF are considered to be related to progression of atherosclerosis. Proliferation and tube formation of ECs are associated with repair of vessels. In the transferable well system coculture with SMCs stimulated the proliferation of ECs, and enhanced the IL-1 beta secretion of ECs and in the collagen gel system coculture with SMCs induced the tube formation of ECs, and appeared to enhance the PDGF production of ECs. In conclusion, the effect of coculture with SMCs on ECs has two conflicting aspects: progression of atheroscleosis and angiogenesis. These results suggest that an imbalance of their effects may lead to pathological events.
Asakawa
H
H
Department of Internal Medicine, Itami City Hospital, Hyogo, Japan. hasakawa@osk.3web.ne.jp
Kobayashi
T
T
D001011:Aorta / Q000378:metabolism / Q000648:ultrastructure; D018920:Coculture Techniques; D004730:Endothelium, Vascular / Q000378:metabolism* / Q000648:ultrastructure; D005169:Factor VIII / Q000032:analysis; D006801:Humans; D007375:Interleukin-1 / Q000378:metabolism*; D009131:Muscle, Smooth, Vascular / Q000378:metabolism* / Q000648:ultrastructure; D010982:Platelet-Derived Growth Factor / Q000096:biosynthesis*; D013194:Staining and Labeling
D007375:Interleukin-1; D010982:Platelet-Derived Growth Factor; D005169:Factor VIII