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发明公开
CN102690789A 分泌破伤风外毒素单克隆抗体的杂交瘤细胞株及由其制备的单克隆抗体、Fab抗体与应用 失效 - 权利终止

分泌破伤风外毒素单克隆抗体的杂交瘤细胞株及由其制备的单克隆抗体、Fab抗体与应用
摘要：
本发明涉及一种分泌破伤风梭菌外毒素单克隆抗体的鼠源杂交瘤细胞株，保藏号为CCTCC NO.C201257；本发明还涉及由该鼠源杂交瘤细胞株制备的破伤风梭菌外毒素单克隆抗体；本发明还提供一种Fab抗体，其包括κ链和Fd链，所述κ链和Fd链从上述的杂交瘤细胞株的总RNA中扩增获得。本发明还涉及预防或治疗破伤风梭菌感染的药物，其包含上述的破伤风梭菌外毒素单克隆抗体和/或Fab抗体，及药学上可接受的载体。本发明采用天然破伤风外毒素筛选到一种能有效中和破伤风外毒素的单克隆抗体，并以此为基础采用基因工程抗体技术制备了能在体外规模化生产的、具有中和毒素效力的Fab基因工程抗体。
摘要（英）：

The invention relates to a mouse hybridoma cell strain secreting a clostridium tetani bacillus exotoxin monoclonal antibody, wherein the strain has a preservation number of CCTCC (China Center for Type Culture Collection) NO. C201257. The invention further relates to a clostridium tetani bacillus exotoxin monoclonal antibody prepared by the mouse hybridoma cell strain; the invention further provides an Fab antibody, comprising a kappa chain and an Fd chain; the kappa chain and the Fd chain are obtained by amplifying from total RNA (ribonucleic acid) of the hybridoma cell strain. The invention further relates to a medicine for preventing or treating clostridium tetani bacillus infection, comprising the clostridium tetani bacillus exotoxin monoclonal antibody and/or the Fab antibody, and a pharmaceutically acceptable carrier. According to the invention, a monoclonal antibody for effectively neutralizing tetanus exotoxin is screened with natural tetanus exotoxin, and an Fab gene engineering antibody which is produced by large scale in vitro and which has toxin neutralizing effect is prepared with a gene engineering antibody technology on the basis of the monoclonal antibody.

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