S. Watanabe et al., CULTURED RETINAL PERICYTES STIMULATE IN-VITRO ANGIOGENESIS OF ENDOTHELIAL-CELLS THROUGH SECRETION OF A FIBROBLAST GROWTH FACTOR-LIKE MOLECULE, Atherosclerosis, 130(1-2), 1997, pp. 101-107
Interaction between cultured endothelial cells (EC) and pericytes (PC)
was studied in vitro to clarify the mechanism of diabetic proliferati
ve retinopathy. Conditioned medium (CM) from retinal PC strongly incre
ased the proliferation and moderately stimulated migration of retinal
EC. Moreover, CM from PC caused stimulation of angiogenesis of retinal
EC and umbilical cord vein EC in vitro at the same extent as basic fi
broblast growth factor (bFGF). PC also stimulated angiogenesis by EC i
n mixed cultures. The angiogenic, proliferative and migration activiti
es in CM from PC were inhibited by an antibody to bFGF. These data sug
gest that PC play an important role in angiogenesis through secretion
of an FGF-like molecule. (C) 1997 Elsevier Science Ireland Ltd.