Angiopoietin-2 is required for postnatal angiogenesis and lymphatic patterning, and only the latter role is rescued by angiopoietin-1

Nicholas W. Gale, Gavin Thurston, Sean F. Hackett, Roumiana Renard, Quan Wang, Joyce McClain, Cliff Martin, Charles Witte, Marlys H. Witte, David Jackson, Chitra Suri, Peter A. Campochiaro, Stanley J. Wiegand, George D. Yancopoulos

Research output: Contribution to journalArticle

741 Scopus citations

Abstract

VEGF and Angiopoietin-1 requisitely collaborate during blood vessel development. While Angiopoietin-1 obligately activates its Tie2 receptor, Angiopoietin-2 can activate Tie2 on some cells, while it blocks Tie2 activation on others. Our analysis of mice lacking Angiopoietin-2 reveals that Angiopoietin-2 is dispensable for embryonic vascular development but is requisite for subsequent angiogenic remodeling. Unexpectedly, mice lacking Angiopoietin-2 also exhibit major lymphatic vessel defects. Genetic rescue with Angiopoietin-1 corrects the lymphatic, but not the angiogenesis, defects, suggesting that Angiopoietin-2 acts as a Tie2 agonist in the former setting, but as an antagonist in the latter setting. Our studies define a vascular growth factor whose primary role is in postnatal angiogenic remodeling and also demonstrate that members of the VEGF and Angiopoietin families collaborate during development of the lymphatic vasculature.

Original languageEnglish (US)
Pages (from-to)411-423
Number of pages13
JournalDevelopmental Cell
Volume3
Issue number3
DOIs
StatePublished - Sep 1 2002

ASJC Scopus subject areas

  • Molecular Biology
  • Biochemistry, Genetics and Molecular Biology(all)
  • Developmental Biology
  • Cell Biology

Fingerprint Dive into the research topics of 'Angiopoietin-2 is required for postnatal angiogenesis and lymphatic patterning, and only the latter role is rescued by angiopoietin-1'. Together they form a unique fingerprint.

  • Cite this

    Gale, N. W., Thurston, G., Hackett, S. F., Renard, R., Wang, Q., McClain, J., Martin, C., Witte, C., Witte, M. H., Jackson, D., Suri, C., Campochiaro, P. A., Wiegand, S. J., & Yancopoulos, G. D. (2002). Angiopoietin-2 is required for postnatal angiogenesis and lymphatic patterning, and only the latter role is rescued by angiopoietin-1. Developmental Cell, 3(3), 411-423. https://doi.org/10.1016/S1534-5807(02)00217-4