摘要:
The invention relates to a process for producing and obtaining anaphylatoxin- and cocytotaxin-containing leucotaxine preparations and anaphylatoxin and cocytotaxin proteins in molecularly homogeneous, biologically active form from contact-activated mammalian serum by the following steps: separation of the proteins from other serum constituents to obtain a serum protein concentrate fraction, separation of a part of accompanying foreign blood proteins from anaphylatoxin and cocytotaxin present in the said protein concentrate fraction, isolation of the leucotaxine preparation by chromatography on hydroxyapatite, and optionally further purification and/or separation of the leucotaxine preparation into anaphylatoxin and cocytotaxin proteins by chromatographical methods. The invention is characterized in that, prior to chromatography on hydroxyapatite, in the above-mentioned process, a major fraction of accompanying foreign blood constituents is separated from the said serum protein concentrate fraction by fractional elution and/or precipitation with a water-soluble alcohol and/or at least one molecular sieve filtration.
摘要:
PROBLEM TO BE SOLVED: To identify therapeutic and diagnostic uses for naturally occurring soluble EPCR, and further to characterize naturally occurring soluble EPCR. SOLUTION: An altered endothelial protein C receptor has a carboxyl-terminal cystein residue that has been substituted by another amino acid or that has not been palmitoylated. An altered endothelial protein C receptor has not been glycosylated. An isolated endothelial protein C receptor has been selectively spliced. An isolated soluble endothelial protein C receptor has been truncated by a naturally occurring proteolytic cleavage site before a transmembrane domain. COPYRIGHT: (C)2008,JPO&INPIT