Glycopolysialylation of non-blood coagulation proteins

    公开(公告)号:AU2015242970A1

    公开(公告)日:2015-11-05

    申请号:AU2015242970

    申请日:2015-10-13

    Abstract: A water soluble polymer, in particular polysialic acid (PSA) or a modified PSA (mPSA), is conjugated to an oxidized carbohydrate moiety of a glycoprotein other than a blood coagulation protein or to a ganglioside or drug delivery system by contacting the oxidized carbohydrate moiety with the water soluble polymer, wherein said water soluble polymer contains an aminooxy group and an oxime linkage is formed between the oxidized carbohydrate moiety and the aminooxy group on the water soluble polymer or wherein said water soluble polymer contains a hydrazide group and a hydrazone linkage is formed between the oxidized carbohydrate moiety and the hydrazide group on the water soluble polymer. Conjugates of aminooxy- or hydrazide-water soluble polymer, such as PSA and mPSA, are thus obtained in which the PSA or mPSA is attached via a carbohydrate moiety.

    Conjugado de factor viia - ácido (poli)siálico con una vida media in vivo prolongada

    公开(公告)号:ES2521490T3

    公开(公告)日:2014-11-12

    申请号:ES07865679

    申请日:2007-12-14

    Abstract: Constructo proteináceo modificado químicamente que comprende a) una molécula de factor VII activado (FVIIa) seleccionado entre el grupo consistente en FVIIa plasmático y FVIIa recombinante (rFVIIa) y un derivado biológicamente activo de FVIIa que presenta una identidad de secuencia de aminoácidos superior al 90% con respecto al FVIIa de longitud completa; y b) al menos un ácido polisiálico que comprende de 1 a 4 unidades de ácido siálico unido a dicha molécula de FVIIa; donde el ácido polisiálico se enlaza de forma covalente directamente con al menos un residuo aminoácido de dicha molécula de FVIIa; y donde la vida media in vivo de dicho constructp en la sangre de un mamífero se prolonga en comparación con la vida media in vivo de una molécula de FVIIa que no está modificada químicamente.

    Preparative Purification Process for Human Furin

    公开(公告)号:AU2013245489A1

    公开(公告)日:2013-11-07

    申请号:AU2013245489

    申请日:2013-10-16

    Abstract: Recombinant truncated human furin was expressed in CHO cells and concentrated approximately 50-fold by ultrafiltration and diafiltration. The concentrate was purified by column chromatography on Capto-MMC TM resulting in a 30-50 fold purification factor and a yield of at least 60%. The at least 20% pure preparation obtained after Capto-MMC T M chromatography had already a purification degree allowing on-column maturation of pro-VWF. Then an additional Arginine Sepharose chromatography purification was carried out. This two column process for purification of truncated human furin resulted in an almost pure furin preparation with a specific activity of approximately 290,000 U furin/mg protein and a yield of about 50%.

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