Title |
Stimulation of angiogenesis and survival of endothelial cells by human monoclonal Tie2 receptor antibody
|
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Published in |
Clinical Materials, February 2015
|
DOI | 10.1016/j.biomaterials.2015.01.062 |
Pubmed ID | |
Authors |
Byungtae Hwang, Sang-Hyun Lee, Jang-Seong Kim, Ji Hyun Moon, In Cheul Jeung, Na Geum Lee, Jongjin Park, Hyo Jeong Hong, Young-Lai Cho, Haiyoung Jung, Young-Jun Park, Seon-Jin Lee, Hee Gu Lee, Won Kon Kim, Baek Soo Han, Kwang-Hee Bae, Sang J. Chung, Young-Guen Kwon, Sang Chul Lee, Sang Jick Kim, Jeong-Ki Min |
Abstract |
Angiopoietin-1 (Ang1) and its endothelium-specific receptor, tyrosine kinase with Ig and epidermal growth factor homology domain 2 (Tie2), play critical roles in vascular development. Although the Ang1/Tie2 system has been considered a promising target for therapeutic neovascularization, several imitations of large-scale production have hampered the development of recombinant Ang1 for therapeutics. In this study, we produced a fully human agonistic antibody against Tie2, designated 1-4h, and tested the applicability of 1-4h as an alternative to native Ang1 in therapeutic angiogenesis. 1-4h significantly enhanced the phosphorylation of Tie2 in a dose- and time-dependent manner in human Tie2-expressing HEK293 cells and human umbilical vein endothelial cells. Moreover, 1-4h induced the activation of Tie2-mediated intracellular signaling such as AKT, eNOS, MAPK, and Focal Adhesion Kinase p125(FAK). In addition, 1-4h increased the chemotactic motility and capillary-like tube formation of endothelial cells in vitro and enhanced the survival of serum-deprived endothelial cells. Taken together, our data clearly suggest that a human Tie2 agonistic antibody is a potentially useful therapeutic approach for the treatment of several ischemic diseases including delayed-wound healing and ischemic heart and limb diseases. |
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Demographic breakdown
Readers by professional status | Count | As % |
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Immunology and Microbiology | 2 | 7% |
Other | 5 | 17% |
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