【血管生成抑制素K1-4】人血管生成抑制因子Kringles

【血管生成抑制素K1-4】人血管生成抑制因子Kringles 1-4，Human Angiostatin Kringles 1-4，Angiostatin K1-4

产品名称：【血管生成抑制素K1-4】人血管生成抑制因子Kringles 1-4-Human Angiostatin Kringles 1-4

产品货号：PRO-604

产品规格：10ug///1mg///2ug

来源宿主：人体液中提取纯化

保存建议：【血管生成抑制素K1-4】人血管生成抑制因子Kringles 1-4-Human Angiostatin Kringles 1-4Lyophilized Angiostatin Kringles 1-4 although stable at room temperature for 3 weeks， should be stored desiccated below -18℃. Upon reconstitution Angiostatin Kringles1-4 should be stored at 4℃ between 2-7 days and for future use below -18℃.For long term storage it is recommended to add a carrier protein （0.1% HSA or BSA）.Please prevent freeze-thaw cycles.

背景资料：There are several proteolytic fragments or specific domains of proteins that act as inhibitors of angiogenesis. These include fragments of plasminogen such as Angiostatin protein kringles 1-4 and kringles 1-5， Endostatin， Restin， PEX， the N-terminal fragment of prolactin， and the Nterminally truncated platelet factor. Angiostatin is a proteolytic protein fragment of plasminogen that is comprised of the first 4 kringle regions. Angiostatin k1-4 prevents the growth of endothelial cells， and its systemic administration inhibits the growth of primary carcinomas in mice. Angiostatin Kringles 1-3 segment has a larger inhibitory activity than the Angiostatin kringles 1-4 fragment. The protease-activated angiostatin kringles 1-5 is the most potent plasminogen fragment with over 50 times larger endothelial cell specific inhibitory activity. Angiostatin kringles 1-5 systemic administration inhibits growth of fibrosarcoma and significantly reduces neovascularization.Angiostatin is an angiogenesis inhibitor in mouse serum and urine. Angiostatin is a 38 kDa protein fragment of the plasminogen composed of the 1st 4 kringle domains of plasminogen. Angiostatin K1-4 is also named plasminogen kringles 1-4 and PK1-4.Angiostatin protein is manufactured by the protelytic cleavage of plasminogen by a serine protease from several prostate carcinoma cell lines. The manufacturing of angiostatin by pancreatic cancer cells can be inhibited by TGF-beta 1 along with plasminogen activator inhibitor type-1 （PAI1）.

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