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METHOD OF PREPARING THE HIGH-PURIFIED MONOCOMPONENT INSULIN
METHOD OF PREPARING THE HIGH-PURIFIED MONOCOMPONENT INSULIN
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机译:制备高纯度单组分胰岛素的方法
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摘要
FIELD: medicine, biotechnology. SUBSTANCE: insulin-sodium containing 85% monofraction, not less, is fed on chromatography column filled with sulfocationite-exchange resin КУ-23И (particle size is 200-300 mcm). Insulin is eluted with 0.018-0.022 M phosphate linear buffer and insulin is isolated by isoelectric precipitation. Insulin is dissolved in 1 M acetic acid and fed on chromatography column filled with Sephadex G-50 Sf (Pharmacia firm) and insulin is eluted with 1 M acetic acid. Part of insulin-containing eluate that is eluted at the range from 0.6-0.7 to 0.9-1.0 packing volume of column is fed to column inlet for recirculation and elution is continued with 1 M acetic acid. Monopeak insulin obtained after this circulatory gel-chromatography stage is fed on column filled with anione-exchange silica gel PAE-300 (Amicon firm; particle size is from 35 to 70 mcm). Insulin is eluted at the rate from 20 to 45 ml/cm2×h-1, using exponential gradient of sodium chloride concentration. The obtained insulin has 98.5% monofraction (not less), 0.5% deamidoinsulin (not above), 1.0% nonidentified impurities (by HPLC method) and 10 p.p.m. proinsulin and its derivatives (not above). The yield of product by mass is from 55% to 65% of initial insulin-sodium. EFFECT: improved method of insulin preparing, increased yield. 2 ex, 2 dwg
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机译:领域:医学,生物技术。物质:将含有不少于85%的胰岛素钠的胰岛素钠送入装有亚硫酸氢盐交换树脂КУ-23И(粒度为200-300 mcm)的色谱柱上。用0.018-0.022 M磷酸盐线性缓冲液洗脱胰岛素,并通过等电沉淀分离胰岛素。将胰岛素溶解在1 M乙酸中,并送入装有Sephadex G-50 Sf(Pharmacia公司)的色谱柱中,并用1 M乙酸洗脱胰岛素。将部分以0.6-0.7至0.9-1.0的色谱柱填充体积洗脱的含胰岛素洗脱液送入色谱柱入口进行再循环,并继续用1 M乙酸洗脱。将在该循环凝胶色谱法步骤后获得的单峰胰岛素进料到装有阴离子交换硅胶PAE-300(Amicon公司;粒径为35至70 mcm)的色谱柱上。使用氯化钠浓度的指数梯度,以20至45 ml / cm 2 Sup>×h -1 Sup>的速率洗脱胰岛素。所得的胰岛素具有98.5%的单级分(不少于),0.5%的脱酰胺基胰岛素(不高于此),1.0%的未鉴定的杂质(通过HPLC法)和10p.p.m。胰岛素原及其衍生物(非上述)。产品的质量产率为初始胰岛素钠的55%至65%。效果:改进的胰岛素制备方法,增加了产量。 2 ex,2 dwg
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