解码曼诺斯受体-mAb相互作用:高曼诺斯N-甘氨酸和甘氨酸配对的重要性
Julia Baumeister1,2, Maximilian Meudt1,3, Sybille Ebert4
1Analytical Development Biologicals, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss, Germany.
mAbs
|September 9, 2024
概括
这项研究表明,曼诺糖受体 (MR) 与单克隆抗体 (mAbs) 上的高曼诺糖N-甘结合,这可能解释了更快的清除速度,并告知了治疗性抗体开发策略.
科学领域:
- 生物制药开发 生物制药开发
- 葡萄糖生物学 葡萄糖生物学
- 免疫学 免疫学 免疫学
背景情况:
- 治疗性单克隆抗体 (mAb) 的质量属性,如N-糖化,影响药理动力学 (PK) 和疗效.
- 在mAbs上的高曼诺斯N-甘氨酸与加速血液清理和减少半衰期有关.
- 假设曼诺酶受体 (MR,CD206) 可以调解这种清除,但与mAbs的直接相互作用仍然未被证明.
研究的目的:
- 系统地研究和证明曼诺斯受体 (MR) 和单克隆抗体 (mAbs) 与高曼诺斯的N-甘氨酸之间的直接相互作用.
- 为了阐明MR与mAbs.上的不同高曼诺斯糖基对的结合特征.
主要方法:
- 新型分析技术的开发和应用:MR表面等离子体共振和MR亲和色谱.
- 研究MR-mAb结合亲和力与高曼诺斯含量,糖对类型,mAb格式和序列的关系.
主要成果:
- 首次系统地证明了MR与含高曼诺斯N-甘氨酸的mAbs的Fc区域结合.
- MR-mAb相互作用取决于高曼诺斯含量,但独立于mAb序列或格式.
- 相对称的高曼诺斯葡萄糖对与不对称的葡萄糖对相比,对MR的结合亲和力更强.
结论:
- 这些发现提供了强有力的证据,证明MR介导的mAbs清除与高曼诺斯的N-glycans.
- 了解这种相互作用对于优化mAb开发策略和改善基于IgG的治疗方法的PK概况至关重要.
- 这项研究强调了在治疗抗体设计中控制高曼诺斯糖形式的重要性.
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