CN102757930A - 超低IgG新生牛血清生产工艺 - Google Patents

超低IgG新生牛血清生产工艺 Download PDF

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CN102757930A
CN102757930A CN2011101057893A CN201110105789A CN102757930A CN 102757930 A CN102757930 A CN 102757930A CN 2011101057893 A CN2011101057893 A CN 2011101057893A CN 201110105789 A CN201110105789 A CN 201110105789A CN 102757930 A CN102757930 A CN 102757930A
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igg
spa
serum
affinity chromatography
newly
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李卓
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CHANGCHUN ANBEI BIOLOGICAL TECHNOLOGY Co Ltd
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CHANGCHUN ANBEI BIOLOGICAL TECHNOLOGY Co Ltd
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Abstract

本发明涉及一种超低IgG新生牛血清生产工艺。通过亲和层析工艺去除胎牛和新生牛血清中的γ球蛋白,使FBS γ球蛋白含量减到IgG≤5ug/ml水平,而保持生物学活性不变;通过金黄色葡萄球菌A蛋白(SPA)与亲和层析技术相结合的生产工艺进行分离IgG或其亚型及片段(如Fc、Fab);SPA能与人及多种哺乳动物血清IgG分子中的Fc片段结合;SPA除与IgG结合外,还能与血清中少量的IgM和IgA结合;SPA菌对各类免疫球蛋白的吸附率:IgG为90%~98%、IgM为2%~30%、IgA为1.5%~20%;SPA-Sepharose4B亲和层析去除牛血清中r-IgG,超低IgG胎牛和新生牛血清的r-IgG≤5~10ug/ml。

Description

超低IgG新生牛血清生产工艺
技术领域
本发明涉及超低IgG新生牛血清生产工艺。
背景技术
牛血清是人用生物制品疫苗、动物疫苗产品中重要的原材料之一,关系到人和动物的健康和社会的和谐,所以牛血清产品一直受各国政策的扶持。牛血清主要用于科研院所的中心实验室、人用生物制品疫苗及动物疫苗的生产和研究等领域。随着生物技术的快速发展,牛血清的需求量与日俱增。超低IgG胎牛血清和新生牛血清的生产单位国内没有,所以,该产品不仅市场前景十分广阔,而且填补一项空白,并对国际学术界的影响具有推动作用,其成功必然会带来巨大的经济效益和社会效益。
发明内容
本发明的目的在于提供一种超低IgG新生牛血清生产工艺,主要是利用金黄色葡萄球菌A蛋白(SPA)与亲和层析技术相结合的生产工艺进行分离IgG或其亚型及片段(如Fc、Fab)等。SPA能与人及多种哺乳动物血清IgG分子中的Fc片段结合。SPA除与IgG结合外,还能与血清中少量的IgM和IgA结合。SPA菌对各类免疫球蛋白的吸附率:IgG为90%~98%、IgM为2%~30%、IgA为1.5%~20%。SPA-Sepharose4B亲和层析去除牛血清中r-IgG生产工艺是技术关键。而超低IgG胎牛和新生牛血清的生产工艺(r-IgG≤5~10ug/ml)为本发明的创新点。
本发明的超低IgG胎牛血清和新生牛血清,是利用亲和层析工艺去除胎牛和新生牛血清中的γ球蛋白,使FBS γ球蛋白含量减到IgG≤5ug/ml水平,而保持生物学活性不变。随着基因工程技术、细胞工程技术、酶工程技术和发酵工程技术的不断发展,特别是生物医药领域疫苗的快速发展,都是通过细胞培养来实现的。而且细胞是病毒、蛋白的表达载体,细胞质量直接影响蛋白的表达量或病毒的滴度,故筛选、驯化优质细胞是关键。细胞培养的发展,培养基的质量又是关键,而培养基的主要成份中动物血清对细胞的生长繁殖发挥着重要,甚至是难以替代的作用。在动物血清的应用中牛血清又是最为广泛的,而牛血清中IgG含量的高低对于细胞的表达和提高抗体的滴度非常重要,所以超低IgG牛血清生产工艺的研究迫在眉睫。
本发明主要技术是利用SPA-Sepharose4B的亲和层析法去除牛血清中r球蛋白。主要技术指标是牛血清中免疫球蛋白(r-IgG)含量达到≤5~10ug/ml,而生物活性不变。主要技术经济指标:本发明的超低IgG新生牛特别是的生产单位国内没有。所以,其成功必然会带来巨大的经济效益和社会效益。本发明是在比较现有成熟技术基础上,进行优化组合并融合国际先进技术而完善建立的。其适用于规模化生产,填补了国内空白。
本发明的超低IgG新生牛血清生产工艺,是通过亲和层析工艺去除胎牛和新生牛血清中的γ球蛋白,使FBS γ球蛋白含量减到IgG≤5ug/ml水平,而保持生物学活性不变;通过金黄色葡萄球菌A蛋白(SPA)与亲和层析技术相结合的生产工艺进行分离IgG或其亚型及片段(如Fc、Fab);SPA能与人及多种哺乳动物血清IgG分子中的Fc片段结合;SPA除与IgG结合外,还能与血清中少量的IgM和IgA结合;SPA菌对各类免疫球蛋白的吸附率:IgG为90%~98%、IgM为2%~30%、IgA为1.5%~20%;SPA-Sepharose4B亲和层析去除牛血清中r-IgG,超低IgG胎牛和新生牛血清的r-IgG≤5~10ug/ml。
本发明的社会效益:
(1)填补国内的空白,打破国外市场的垄断地位:该项目国内刚刚起步,创业项目的完成必将填补国内的空白,打破国外同类产品对国内牛血清市场的垄断地位。
(2)促进生物制药业的健康发展:全面完成后公司生产的牛血清可以广泛应用于国内各生物尖端领域,保证生物制药业和试验的科学性,促进生物制品事业的健康发展和社会的和谐稳定。
(3)促进就业:项目完成后,可吸纳生产、研发和销售人员。
本发明用的主要原材料是犊牛血和成牛血的下游副产品,废牛血的综合利用将极大促进畜牧业的健康发展,既提高农民的收入,同时又治理环境。
具体实施方式
本发明的超低IgG新生牛血清生产工艺,是通过亲和层析工艺去除胎牛和新生牛血清中的γ球蛋白,使FBS γ球蛋白含量减到IgG≤5ug/ml水平,而保持生物学活性不变;通过金黄色葡萄球菌A蛋白(SPA)与亲和层析技术相结合的生产工艺进行分离IgG或其亚型及片段(如Fc、Fab);SPA能与人及多种哺乳动物血清IgG分子中的Fc片段结合;SPA除与IgG结合外,还能与血清中少量的IgM和IgA结合;SPA菌对各类免疫球蛋白的吸附率:IgG为90%~98%、IgM为2%~30%、IgA为1.5%~20%;SPA-Sepharose4B亲和层析去除牛血清中r-IgG,超低IgG胎牛和新生牛血清的r-IgG≤5~10ug/ml。

Claims (1)

1.一种超低IgG新生牛血清生产工艺,其特征在于:通过亲和层析工艺去除胎牛和新生牛血清中的γ球蛋白,使FBS γ球蛋白含量减到IgG≤5ug/ml水平,而保持生物学活性不变;通过金黄色葡萄球菌A蛋白(SPA)与亲和层析技术相结合的生产工艺进行分离IgG或其亚型及片段(如Fc、Fab);SPA能与人及多种哺乳动物血清IgG分子中的Fc片段结合;SPA除与IgG结合外,还能与血清中少量的IgM和IgA结合;SPA菌对各类免疫球蛋白的吸附率:IgG为90%~98%、IgM为2%~30%、IgA为1.5%~20%;SPA-Sepharose4B亲和层析去除牛血清中r-IgG,超低IgG胎牛和新生牛血清的r-IgG≤5~10ug/ml。
CN2011101057893A 2011-04-27 2011-04-27 超低IgG新生牛血清生产工艺 Pending CN102757930A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107001432A (zh) * 2014-11-17 2017-08-01 通用电气医疗集团生物工艺研发股份公司 突变的免疫球蛋白结合多肽
CN110804578A (zh) * 2019-11-19 2020-02-18 内蒙古维克生生物技术股份有限公司 一种牛血清去除IgG的生产方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107001432A (zh) * 2014-11-17 2017-08-01 通用电气医疗集团生物工艺研发股份公司 突变的免疫球蛋白结合多肽
CN107001432B (zh) * 2014-11-17 2022-02-18 思拓凡生物工艺研发有限公司 突变的免疫球蛋白结合多肽
CN110804578A (zh) * 2019-11-19 2020-02-18 内蒙古维克生生物技术股份有限公司 一种牛血清去除IgG的生产方法

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Application publication date: 20121031