COMP-Ang1: A designed angiopoietin-1 variant with nonleaky angiogenic activity

Chung Hyun Cho, Richard A. Kammerer, Hyuek Jong Lee, Michel O. Steinmetz, Young Shin Ryu, Sung Ho Lee, Kunio Yasunaga, Kyung Tae Kim, Injune Kim, Han Ho Choi, Won Kim, Sung Hyun Kim, Sung Kwang Park, Gyun Min Lee, Gou Young Koh

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Angiopoietin-1 (Ang1) has potential therapeutic applications in inducing angiogenesis, enhancing endothelial cell survival, and preventing vascular leakage. However, production of Ang1 is hindered by aggregation and insolubility resulting from disulfide-linked higher-order structures. Here, by replacing the N-terminal portion of Ang1 with the short coiled-coil domain of cartilage oligomeric matrix protein (COMP), we have generated a soluble, stable, and potent Ang1 variant, COMP-Ang1. This variant is more potent than native Ang1 in phosphorylating the tyrosine kinase with Ig and epidermal growth factor homology domain 2 (Tie2) receptor and Akt in primary cultured endothelial cells, enhancing angiogenesis in vitro and increasing adult angiogenesis in vivo. Thus, COMP-Ang1 is an effective alternative to native Ang1 for therapeutic angiogenesis in vivo.
    Original languageEnglish
    Pages (from-to)5547-5552
    Number of pages5
    JournalProceedings of the National Academy of Sciences of the United States of America
    Volume101
    Issue number15
    DOIs
    Publication statusPublished - 13 Apr 2004

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