通过CRISPR-Cas9系统,优化CHO细胞中的重组蛋白质生产,通过杀Caspase 8关联蛋白2基因
Ali Kheirandish1, Soofia Sorourian2, Abbas Behzad Behbahani1
1Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, 71348-14336, Iran.
Molecular biotechnology
|November 29, 2025
概括
在中国仓鼠卵巢 (CHO) 细胞中抑制卡斯帕8-关联蛋白2 (CASP8AP2) 增强生物制药生产. 缺少CASP8AP2的CHO细胞表现出蛋白质表达的增加和对有毒化合物的耐药性,从而提高生物过程的效率.
科学领域:
- 生物技术是生物技术.
- 细胞生物学 细胞生物学
- 生物加工是一种生物加工.
背景情况:
- 中国仓鼠卵巢 (CHO) 细胞对于生产复杂生物制药至关重要.
- 提高CHO细胞生产率对于满足日益增长的生物制剂需求至关重要.
- 卡斯帕酶8-关联蛋白2 (CASP8AP2) 调节细胞亡和细胞存活,成为提高生产力的目标.
研究的目的:
- 为了研究沉默CASP8AP2对CHO细胞生产力和抵抗力的影响.
- 评估CASP8AP2作为改善生物制药制造的目标的潜力.
主要方法:
- 采用CRISPR介导的同质独立向整合 (HITI) 来使CHO细胞中的CASP8AP2沉默.
- 使用甲酸盐 (NaBu) 进行了细胞活力测试,以评估耐药性.
- 使用记者蛋白 (JRed和光酶) 来量化蛋白质的产量.
主要成果:
- 与野生类型细胞相比,CASP8AP2缺乏的CHO细胞克隆对NaBu的抵抗性增加,IC50值更高.
- 沉默克隆显示显著增强JRed (高达1.9倍) 和 luciferase (高达1.7倍) 的表达.
- 增强的蛋白质生产与S阶段的细胞循环停止相关.
结论:
- 通过基因沉默准CASP8AP2是一种有前途的策略,可以提高CHO细胞的生产率和生物处理效率.
- 需要对治疗生物制剂和生物反应器设置进行进一步研究,以确认工业可扩展性.
- 转录组分析将提供更深入的洞察力,了解受CASP8AP2.2影响的亡和代谢途径的潜在机制.
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