Abstract:
:The known endothelial mitogens stimulate growth of vascular endothelial cells without regard to their tissue of origin. Here we report a growth factor that is expressed largely in one type of tissue and acts selectively on one type of endothelium. This molecule, called endocrine-gland-derived vascular endothelial growth factor (EG-VEGF), induced proliferation, migration and fenestration (the formation of membrane discontinuities) in capillary endothelial cells derived from endocrine glands. However, EG-VEGF had little or no effect on a variety of other endothelial and non-endothelial cell types tested. Similar to VEGF, EG-VEGF possesses a HIF-1 binding site, and its expression is induced by hypoxia. Both EG-VEGF and VEGF resulted in extensive angiogenesis and cyst formation when delivered in the ovary. However, unlike VEGF, EG-VEGF failed to promote angiogenesis in the cornea or skeletal muscle. Expression of human EG-VEGF messenger RNA is restricted to the steroidogenic glands, ovary, testis, adrenal and placenta and is often complementary to the expression of VEGF, suggesting that these molecules function in a coordinated manner. EG-VEGF is an example of a class of highly specific mitogens that act to regulate proliferation and differentiation of the vascular endothelium in a tissue-specific manner.
journal_name
Naturejournal_title
Natureauthors
LeCouter J,Kowalski J,Foster J,Hass P,Zhang Z,Dillard-Telm L,Frantz G,Rangell L,DeGuzman L,Keller GA,Peale F,Gurney A,Hillan KJ,Ferrara Ndoi
10.1038/35091000keywords:
subject
Has Abstractpub_date
2001-08-30 00:00:00pages
877-84issue
6850eissn
0028-0836issn
1476-4687pii
35091000journal_volume
412pub_type
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