Orchestration of Angiogenesis and Arteriovenous Contribution by Angiopoietins and Vascular Endothelial Growth Factor (VEGF)
Multiple classes of factors contribute to angiogenesis. In past years, the primary focus has been to understand the functions of individual classes of angiogenic factors. However, few studies have focused on the combinatorial roles of multiple classes of factors in angiogenesis. In this report, we h...
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Published in | Proceedings of the National Academy of Sciences - PNAS Vol. 99; no. 12; pp. 8219 - 8224 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
United States
National Academy of Sciences
11.06.2002
National Acad Sciences The National Academy of Sciences |
Subjects | |
Online Access | Get full text |
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Summary: | Multiple classes of factors contribute to angiogenesis. In past years, the primary focus has been to understand the functions of individual classes of angiogenic factors. However, few studies have focused on the combinatorial roles of multiple classes of factors in angiogenesis. In this report, we have investigated the in vivo angiogenic processes regulated by two major classes of angiogenic factors, the angiopoietins and vascular endothelial growth factor (VEGF). Here we show that angiopoietin-1, a factor previously considered to be proangiogenic, can offset VEGF-induced angiogenesis in vivo. We also provide direct in vivo evidence for the synergistic effect of angiopoietin-2 and VEGF on the induction of angiogenesis. Furthermore, we show that these two classes of factors control the ratio of arterial and venous blood vessel types during angiogenesis. We believe that our study is a step toward understanding how multiple classes of factors harmonize angiogenesis and blood vessel types. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Edited by Richard O. Hynes, Massachusetts Institute of Technology, Cambridge, MA, and approved April 17, 2002 To whom reprint requests should be addressed. E-mail: island1005@aol.com. R.P.V. and C.D.R. contributed equally to this work. |
ISSN: | 0027-8424 1091-6490 |
DOI: | 10.1073/pnas.122109599 |