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  • Title: Purification and characterization of recombinant murine endostatin in E. coli.
    Author: You WK, So SH, Lee H, Park SY, Yoon MR, Chang SI, Kim HK, Joe YA, Hong YK, Chung SI.
    Journal: Exp Mol Med; 1999 Dec 31; 31(4):197-202. PubMed ID: 10630374.
    Abstract:
    Endostatin, a carboxyl-terminal fragment of collagen XVIII is known as an anti-angiogenic agent, that specifically inhibits the proliferation of endothelial cell and the growth of several primary tumor. We report here the purification and characterization of the recombinant murine endostatin (rmEndostatin) which was expressed in a prokaryotic expression system. This rmEndostatin has similar physiochemical properties of yeast-produced recombinant endostatin, and it also specifically inhibits the proliferation and migration of bovine capillary endothelial cells stimulated by basic fibroblast growth factor. The biological activity of rmEndostatin was also shown by its anti-angiogenic ability on the chorioallantoic membrane of chick embryo in vivo. In this article, we demonstrate the refolding and purification of rmEndostatin, expressed using E. coli system, to a biologically active and soluble form. In addition, these results confirm the activity of endostatin as a potent anti-angiogenic agent.
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