Endothelial Cells Release A Chemoattractant For Retinal Pigment Epithelial Cells In Vitro

Peter A Campochiaro, Bert M. Glaser

Research output: Contribution to journalArticle

Abstract

Though the pathogenesis of choroidal neovascular membranes is uncertain, there is evidence to support a primary dysfunction in the retinal pigment epithelium (RPE). This suggests the possibility that a healthy RPE may provide a physical and/or chemical barrier to subretinal endothelial cell invasion. It has recently been shown that RPE cells in culture produce an inhibitor of neovascularization. Histopathologic evidence suggests that RPE cells tend to surround new blood vessels and contain them. We therefore investigated the possibility that RPE cells are guided toward endothelial cells by chemoattractants. Using a modified Boyden chamber technique, we showed that endothelial cells in culture produce a chemoattractant for RPE cells. The active component is trypsin sensitive, stable at extremes of pH (3 through 10), and nondialyzable (12,000- to 14,000-dalton cutoff). It is partially heat stable but becomes completely heat stable in the presence of 1% sodium dodecyl sulfate. These are all characteristics of the previously described endothelial cell-derived growth factor, suggesting that this mitogen might be the chemoattractant. The ability of RPE cells to be attracted to sites of new blood vessel formation may enhance their potential function as inhibitors of neovascularization.

Original languageEnglish (US)
Pages (from-to)1876-1880
Number of pages5
JournalArchives of Ophthalmology
Volume103
Issue number12
DOIs
StatePublished - 1985
Externally publishedYes

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Retinal Pigments
Retinal Pigment Epithelium
Chemotactic Factors
Endothelial Cells
Epithelial Cells
Angiogenesis Inhibitors
Blood Vessels
Cell Culture Techniques
Hot Temperature
Endothelial Growth Factors
In Vitro Techniques
Mitogens
Sodium Dodecyl Sulfate
Trypsin
Membranes

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Endothelial Cells Release A Chemoattractant For Retinal Pigment Epithelial Cells In Vitro. / Campochiaro, Peter A; Glaser, Bert M.

In: Archives of Ophthalmology, Vol. 103, No. 12, 1985, p. 1876-1880.

Research output: Contribution to journalArticle

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