CN Patent

CN102838677B — 重组促红细胞生成素及制备方法

Assigned to SUZHOU YUANJI BIOLOGICAL TECHNOLOGY Co Ltd · Expires 2014-10-22 · 12y expired

What this patent protects

本发明涉及化学修饰的重组促红细胞生成素及制备方法,采用基因工程技术对促红素进行重组,在促红素中引入了具有化学活泼酮基的2-氨-8-氧代壬酰残基,在聚乙二醇对重组促红素共价修饰时,聚乙二醇特异性地与2-氨-8-氧代壬酰残基反应,反应完全,且不与其他氨基酸残基发生反应,所需要的反应条件较温和,解决了现有技术中选择性差、反应条件恶劣的问题。聚乙二醇化的重组促红素的药代动力学研究结果、血细胞比容测定结果均优于天然的促红素。

USPTO Abstract

本发明涉及化学修饰的重组促红细胞生成素及制备方法,采用基因工程技术对促红素进行重组,在促红素中引入了具有化学活泼酮基的2-氨-8-氧代壬酰残基,在聚乙二醇对重组促红素共价修饰时,聚乙二醇特异性地与2-氨-8-氧代壬酰残基反应,反应完全,且不与其他氨基酸残基发生反应,所需要的反应条件较温和,解决了现有技术中选择性差、反应条件恶劣的问题。聚乙二醇化的重组促红素的药代动力学研究结果、血细胞比容测定结果均优于天然的促红素。

Drugs covered by this patent

Patent Metadata

Patent number
CN102838677B
Jurisdiction
CN
Classification
Expires
2014-10-22
Drug substance claim
No
Drug product claim
No
Assignee
SUZHOU YUANJI BIOLOGICAL TECHNOLOGY Co Ltd
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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