实验动物与比较医学 ›› 2023, Vol. 43 ›› Issue (6): 612-618.DOI: 10.12300/j.issn.1674-5817.2023.035

• 动物实验技术与方法 • 上一篇    下一篇

Big-BALB/c小鼠亚系选育前后的抗体制备效率比较研究

王丹1(), 张晓璐2, 王妍3, 傅博2, 王文栋2, 刘京3, 张甦寅3, 武怡荷3, 吴德国1, 杜小燕2, 战大伟3, 章秀林4()(), 李长龙2()()   

  1. 1.中国科学院遗传学与发育生物学研究所, 北京 100101
    2.首都医科大学基础医学院, 北京 100069
    3.斯贝福(北京)生物技术有限公司, 北京 102100
    4.中国医学科学院阜外医院, 北京 100037
  • 收稿日期:2023-03-17 修回日期:2023-06-12 出版日期:2023-12-25 发布日期:2024-01-06
  • 通讯作者: 章秀林(1995—),女,博士,研究实习员,主要从事医学遗传学研究。E-mail: xiulinzh@163.com。ORCID: 0000-0003-2964-4769
    李长龙(1976—),男,博士,副教授/副研究员,主要从事实验动物资源开发及遗传与发育研究。E-mail: li-changlong@126.com。ORCID: 0000-0001-6832-785X
  • 作者简介:王 丹(1980—),女,本科,工程师,主要从事单克隆抗体制备及水生动物饲养工作。E-mail: danwang@genetics.ac.cn。ORCID:0009-0007-2203-7890
  • 基金资助:
    国家重点研发计划项目课题“基因编辑、SPF级和无菌级实验动物质量评价技术标准研究”(2022YFF0711005);国家重点研发计划青年科学家项目“基于SNP技术建立我国常用实验动物遗传质量评价技术体系”(2021YFF0703200);国家自然科学基金“长爪沙鼠长期感染的幽门螺杆菌遗传变异及对胃内微生物种群和病理变化的影响”(32070537);北京市自然科学基金-北京市教育委员会重点项目“幽门螺杆菌调节RXR诱发长爪沙鼠胃癌的机制研究”(KZ20210025037)

Study on the Antibody Production Efficiency in Modified Big-BALB/c Mice

Dan WANG1(), Xiaolu ZHANG2, Yan WANG3, Bo FU2, Wendong WANG2, Jing LIU3, Suyin ZHANG3, Yihe WU3, Deguo WU1, Xiaoyan DU2, Dawei ZHAN3, Xiulin ZHANG4()(), Changlong LI2()()   

  1. 1.The Institute of Genetics and Developmental Biology in Chinese Academy of Science, Beijing 100101, China
    2.School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
    3.SPF (Beijing) Biotechnology Co. , Ltd. , Beijing 102100, China
    4.Fuwai Hospital of Chinese Academy of Medical Sciences. , Beijing 100037, China
  • Received:2023-03-17 Revised:2023-06-12 Published:2023-12-25 Online:2024-01-06
  • Contact: ZHANG Xiulin (ORCID: 0000-0003-2964-4769), E-mail: xiulinzh@163.com;
    LI Changlong (ORCID: 0000-0001-6832-785X), E-mail: li-changlong@126.com.

摘要:

目的 比较利用BALB/c和Big-BALB/c(简称B-BALB/c)两种亚系小鼠制备鼠痘及鼠肝炎单克隆抗体的效率,为今后通过杂交瘤进行体内诱导单克隆抗体制备时实验动物的选择提供参考。 方法 从常规繁育的BALB/c小鼠群体中选择4周龄体重超过正常动物5%(后期选种标准为超过10%)的个体进行选种并单独繁育,经10代选育制备B-BALB/c小鼠亚系。选择10~11周龄、雌雄各半的BALB/c小鼠和B-BALB/c小鼠各40只,分别接种用液体石蜡预处理后的鼠痘单克隆抗体杂交瘤细胞株G23或鼠肝炎单克隆抗体杂交瘤细胞株Y15,然后通过体内诱生法获取含单克隆抗体的小鼠腹水,利用间接ELISA法检验抗体效价,按照品系、性别和接种杂交瘤类型对小鼠进行分组,分析腹水产量、抗体效价和抗体产量以评估两种亚系小鼠的抗体制备效率。 结果 经10代选育后获得的10周龄雄性和雌性B-BALB/c小鼠体重分别比同周龄BALB/c小鼠增加了22.3%和12.8%。抗体制备过程中,B-BALB/c小鼠的耐受力比BALB/c小鼠更好,能够适应二次腹水采集;与BALB/c小鼠相比,B-BALB/c小鼠腹水产量和抗体效价均显著提高,尤以杂交瘤细胞株G23接种组更明显(均P<0.000 1)。接种杂交瘤细胞株G23或Y15后,B-BALB/c小鼠的平均抗体产量(14.99×104 U和33.22×104 U)高于BALB/c小鼠(5.33×104 U和19.31×104 U)(均P<0.01)。接种杂交瘤细胞株G23后,B-BALB/c小鼠的平均单位体重的抗体产量(0.55×104 U/g)高于BALB/c小鼠(0.23×104 U/g)(P<0.000 1)。接种杂交瘤细胞株Y15后,雌性B-BALB/c和BALB/c小鼠的单位体重抗体产量高于同亚系的雄性B-BALB/c小鼠(均P<0.01)。 结论 B-BALB/c小鼠在单克隆抗体体内诱导制备中可作为BALB/c小鼠的替代选择,能够达到减少实验动物使用数量、降低人力成本并提高抗体制备效率的目的。

关键词: 单克隆抗体, 制备效率, 杂交瘤, BALB/c小鼠, Big-BALB/c小鼠

Abstract:

Objective To compare the preparation efficiency of mouse pox and mouse hepatitis antibodies between two substrains of BALB/c and Big-BALB/c (B-BALB/c) mice, and to provide a theoretical basis and reference for the selection of laboratory animals in the preparation of monoclonal antibodies induced in vivo through hybridoma. Methods Individuals weighing more than 5% of the weight of normal animals at 4 weeks of age (the criterion for late selection is more than 10%) were selected from a population of conventionally bred BALB/c mice and bred individually, and a subline of B-BALB/c mice was prepared after 10 generations of selection. A total of 40 BALB/c mice and 40 B-BALB/c mice aged 10 to 11 weeks, half male and half female, were selected and inoculated with the mousepox monoclonal antibody hybridoma cell line G23 or the murine hepatitis monoclonal antibody hybridoma cell line Y15 pre-treated with liquid paraffin, respectively. Mice ascites containing monoclonal antibodies were obtained by in vivo induction. The antibody titer was tested by indirect ELISA. The mice were grouped based on the sub-strains, gender and inoculation type of hybridoma to analyze the ascites production, antibody titer and antibody production, and to evaluate the antibody preparation efficiency of the two BALB/c mouse sub-strains. Results After 10 generations of breeding, the body weight of 10-week-old male and female B-BALB/c mice increased by 22.3% and 12.8%, respectively, compared with BALB/c mice of the same age. Compared with BALB/c mice, B-BALB/c mice had better tolerance and adaptation to secondary ascites collection. Compared with BALB/c mice, the ascites production and antibody titer during the preparation of antibodies in B-BALB/c mice were significantly increased, especially in the hybridoma cell line G23 vaccination group (both P<0.000 1) . After inoculation with the hybridoma cell lines G23 or Y15, the average antibody production of B-BALB/c mice (14.99×104 U and 33.22×104 U) was higher than that of BALB/c mice (5.33×104 U and 19.31×104 U) (both P<0.01). After inoculation with hybridoma cell line G23, the average antibody production per unit body weight of B-BALB/c mice (0.55×104 U/g) was higher than that of BALB/c mice (0.23×104 U/g) (P<0.000 1). And the antibody production per unit body weight of female B-BALB/c or BALB/c mice was higher than that of male B-BALB/c or BALB/c mice (both P<0.01). Conclusion B-BALB/c mice can be used as an alternative to BALB/c mice in the in vivo induction of monoclonal antibody preparation, which can achieve the purpose of reducing the number of experimental animals used, lowering the labor cost, and improving the efficiency of antibody preparation.

Key words: Monocloning antibody, Production efficiency, Hybridomas, BALB/c mice, Big-BALB/c mice

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