CN105801683B - 一种犬干扰素冻干制品 - Google Patents

一种犬干扰素冻干制品 Download PDF

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CN105801683B
CN105801683B CN201610202463.5A CN201610202463A CN105801683B CN 105801683 B CN105801683 B CN 105801683B CN 201610202463 A CN201610202463 A CN 201610202463A CN 105801683 B CN105801683 B CN 105801683B
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孙晨
苏建东
杨保收
付旭彬
梁武
李守军
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Tianjin Ringpu Bio Technology Co Ltd
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Abstract

一种犬干扰素冻干制品,涉及冻干生物制品技术领域,所述的犬干扰素冻干制品由犬干扰素原液和冻干保护剂冻干制成,其中冻干保护剂基液由pH缓冲剂及蛋白保护剂组成,所述的冻干保护剂中还包括耐热保护剂、填充剂和冻干加速剂。本发明制备的犬干扰素冻干制品,能在2~8℃条件下长期保存;由于加入了冻干加速剂,缩短了在大规模工业化生产中冻干工艺环节的冻干时间,提升了冻干效率并保证了冻干充分,保证了不同批次产品的稳定性;优选的耐热保护剂与填充剂组合提升了犬干扰素蛋白链抗断裂强度,提高了犬干扰素冻干制品的生物学活性和产品出品率。

Description

一种犬干扰素冻干制品
技术领域
本发明涉及冻干生物制品技术领域,尤其是涉及一种犬干扰素冻干制品。
背景技术
犬干扰素为正常犬机体细胞在适宜诱导剂作用下产生的一种糖蛋白物质,具有广谱抗病毒,抗肿瘤和调节机体免疫功能的作用,现已应用于临床。常见的临床制剂为犬干扰素冻干品,是一种将犬干扰素蛋白和冻干保护剂按比例混合均匀后,冷冻干燥而成的生物制品。该类制品能有效延长干扰素蛋白的保存时间,但其热稳定性差,需要在-15℃以下保存,这给干扰素的贮存和运输带来很大的困难;同时,大规模生产时的冻干工艺环节,常因为冻干时间长或冻干不够充分,造成了犬干扰素活性的丧失或导致冻干品的各项指标偏低甚至不合格。
解决上述问题的根本途径在于提高犬干扰素冻干品的热稳定性和缩短冻干工艺环节的冻干时间,提升冻干效率。为此,本专利发明人在现有技术成果的基础上,开发出一种能使犬干扰素冻干品在2~8℃条件下长期保存,并能短时间内使犬干扰素制品冻干充分的冻干保护剂。
发明内容
本发明旨在针对现有技术的缺陷,提供一种热稳定性好、效价稳定、冻干充分的犬干扰素冻干品。
为实现以上技术目的,本发明采用以下技术方案:
一种犬干扰素冻干制品,由犬干扰素原液和冻干保护剂冻干制成,其中冻干保护剂基液由pH缓冲剂及蛋白保护剂组成,所述的冻干保护剂中还包括耐热保护剂、填充剂和冻干加速剂。
上述的犬干扰素冻干品中,耐热保护剂为聚乙烯比咯烷酮、蔗糖的任一或二者的组合。
优选的,耐热保护剂为聚乙烯比咯烷酮,其浓度为50-200g/L。
上述的犬干扰素冻干品中,填充剂为甘露醇、甘氨酸的任一或二者的组合。
优选的,填充剂为甘露醇,其浓度为20-80g/L。
上述的犬干扰素冻干品中,冻干加速剂为叔丁醇,其浓度为1.8~2.7g/L。
上述的犬干扰素冻干品中,pH缓冲剂为磷酸氢二钠-磷酸二氢钾。
上述的犬干扰素冻干品中,蛋白保护剂为大豆蛋白胨。
上述的犬干扰素冻干品中,优选的耐热保护剂与填充剂组合为聚乙烯吡咯烷酮和甘露醇,该组合能使犬干扰素蛋白链抗断裂强度提升3-25倍,能保证冻干品的颜色和质地均匀,没有收缩。
上述的犬干扰素冻干品中,优选的耐热保护剂为聚乙烯比咯烷酮、优选的填充剂为甘露醇,优选的冻干加速剂为叔丁醇。
由于采用了上述技术方案,本发明具有如下有益效果:
本发明制备的犬干扰素冻干制品能在2~8℃条件下长期保存,在运输存储过程中不必要求运输环境温度保持在-15℃以下,降低了对冷链物流的要求;由于加入了冻干加速剂,缩短了在大规模工业化生产中冻干工艺环节的冻干时间,提升了冻干效率并保证了冻干充分,保证了不同批次产品的稳定性;优选的耐热保护剂与填充剂组合提升了犬干扰素蛋白链抗断裂强度,提高了犬干扰素冻干制品的生物学活性和产品出品率。
具体实施方式
本发明通过以下实施例进一步详述。需要说明的是:下述实施例是说明性的,不是限定性的,不能以下述实施例来限定本发明的保护范围。
实施例1
按照如下方法制备犬干扰素冻干制品,其特征包括如下制备过程:
按照十二结晶水磷酸氢钠2.9g/L、磷酸二氢钠0.2g/L、聚乙烯吡咯烷酮50g/L、甘露醇20g/L、大豆蛋白胨2.5g/L、叔丁醇1.8g/L配制为冻干原液,将配方原液配制好后,高压灭菌,充分混匀;取犬干扰素原液若干,将高压灭菌后的配方原液和犬干扰素原液按照5:1的比例混匀,分装,加好橡胶塞盖子,放入冻干机冻干;冻干结束后,压盖,即得犬干扰素冻干制品。
实施例2
按照如下方法制备犬干扰素冻干制品,其特征包括如下制备过程:
按照十二结晶水磷酸氢钠16.07g/L、磷酸二氢钠1.05g/L、聚乙烯吡咯烷酮125g/L、甘露醇50g/L、大豆蛋白胨1.5g/L、叔丁醇2.25g/L配制为冻干原液,将配方原液配制好后,高压灭菌,充分混匀;取犬干扰素原液若干,将高压灭菌后的配方原液和犬干扰素原液按照5:1的比例混匀,分装,加好橡胶塞盖子,放入冻干机冻干;冻干结束后,压盖,即得犬干扰素冻干制品。
实施例3
按照如下方法制备犬干扰素冻干制品,其特征包括如下制备过程:
按照十二结晶水磷酸氢钠29.85g/L、磷酸二氢钠1.98g/L、聚乙烯吡咯烷酮200g/L、甘露醇80g/L、大豆蛋白胨0.5g/L、叔丁醇2.7g/L配制为冻干原液,将配方原液配制好后,高压灭菌,充分混匀;取犬干扰素原液若干,将高压灭菌后的配方原液和犬干扰素原液按照5:1的比例混匀,分装,加好橡胶塞盖子,放入冻干机冻干;冻干结束后,压盖,即得犬干扰素冻干制品。
实施例4
按照如下方法制备犬干扰素冻干制品,其特征包括如下制备过程:
按照十二结晶水磷酸氢钠10g/L、磷酸二氢钠1.0g/L、蔗糖140g/L、甘氨酸9g/L、大豆蛋白胨1.35g/L、叔丁醇1.7g/L配制为冻干原液,将配方原液配制好后,高压灭菌,充分混匀;取犬干扰素原液若干,将高压灭菌后的配方原液和犬干扰素原液按照5:1的比例混匀,分装,加好橡胶塞盖子,放入冻干机冻干;冻干结束后,压盖,即得犬干扰素冻干制品。
实施例5
按照如下方法制备犬干扰素冻干制品,其特征包括如下制备过程:
按照十二结晶水磷酸氢钠8.7g/L、磷酸二氢钠0.6g/L、聚乙烯吡咯烷酮120g/L、蔗糖100g/L、甘露醇45g/L、甘氨酸5.0g/L、大豆蛋白胨1.2g/L、叔丁醇2.5g/L配制为冻干原液,将配方原液配制好后,高压灭菌,充分混匀;取犬干扰素原液若干,将高压灭菌后的配方原液和犬干扰素原液按照5:1的比例混匀,分装,加好橡胶塞盖子,放入冻干机冻干;冻干结束后,压盖,即得犬干扰素冻干制品。
实施例6
犬干扰素冻干制品的质量检测:
随机抽取不同批次犬干扰素冻干品分别按照以下方案检测,结果表明采用本冻干保护剂配方冻干后的犬干扰素成品质量均合格(如表1所示)。
无菌检验:按《中国生物制品规程》通则《生物制品无菌试验规程》A项进行;
安全性实验:用体重18~20g小白鼠5只,每只腹腔注射0.5ml(犬干扰素冻干品溶于1ml生理盐水),观察7d,动物应健存,每只体重增加判为合格;
外观检测:观察犬干扰素冻干品是否有塌缩、凹陷、缺损等现象,如无则判为合格;
复溶效果监测:取犬干扰素冻干品加生理盐水1ml,1min后观察是否完全溶解以及有无无肉眼可见颗粒,如无则判为合格;
含水量检测:是利用费休氏法测定,低于3%判为合格。
表1 犬干扰素冻干品质量检验结果
实施例7
犬干扰素冻干品37℃保存稳定性试验:
如表2所示:随机抽取各批次干扰素,放置于37℃温箱中,各时间点取样,以微量细胞病变抑制法测定样品的效价,计算效价降低百分率,低于5%判为合格。通过检测结果表明采用本冻干保护剂配方冻干后的犬干扰素成品37℃可稳定保存1个月以上。
表2 犬干扰素冻干品37℃保存稳定性试验(效价降低百分率)
实施例8
犬干扰素冻干品4℃保存稳定性试验:
如表3所示:随机抽取各批次干扰素,放置于4℃冰箱中,各时间点取样,以微量细胞病变抑制法测定样品的效价,计算效价降低百分率,低于5%判为合格。通过检测结果表明采用本冻干保护剂配方冻干后的犬干扰素成品4℃可稳定保存24个月以上。
表3 犬干扰素冻干品4℃保存稳定性试验(效价降低百分率)
以上对本发明的实施例进行了详细说明,但所述内容仅为本发明的较佳实施例,并不用以限制本发明。凡在本发明的申请范围内所做的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。

Claims (1)

1.一种犬干扰素冻干制品,由犬干扰素原液和冻干保护剂冻干制成,其中冻干保护剂基液由pH缓冲剂及蛋白保护剂组成,其特征在于:所述的冻干保护剂中还包括耐热保护剂、填充剂和冻干加速剂;所述的耐热保护剂为聚乙烯比咯烷酮,所述聚乙烯比咯烷酮的浓度为50-200g/L;所述的填充剂为甘露醇,所述甘露醇的浓度为20-80g/L;所述的冻干加速剂为叔丁醇,浓度为1.8~2.7g/L;所述的pH缓冲剂为磷酸氢二钠-磷酸二氢钾;所述的蛋白保护剂为大豆蛋白胨。
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