在外置工程中,使用构造强化抗体对卡德林内细胞结核进行外置工程
bioRxiv : the preprint server for biology
|September 4, 2024
概括
针对P-cadherin (一种在癌症中过度表达的蛋白质) 的抗体可以被设计为药物输送. 捕获P-cadherin在X-二次体构造中触发了它通过一种新的信号通路的内部化.
科学领域:
- 分子生物学分子生物学
- 细胞粘附 细胞粘附
- 癌症生物学 癌症生物学
- 免疫学 免疫学 免疫学
背景情况:
- P-cadherin是一种细胞-细胞粘附蛋白,在各种恶性癌症中经常过度表达.
- 它是基于抗体的药物递送系统的一个有希望的目标.
- 诱导P-cadherin内部化的工程抗体的机制尚不清楚.
研究的目的:
- 阐明在抗体结合后P-cadherin内部化背后的分子机制.
- 建立用于工程抗体的指导方针,以促进针对P-cadherin的细胞内药物输送.
主要方法:
- 利用了生物物理,生物化学和细胞生物学技术的组合.
- 研究了由单克隆抗体CQY684.4诱导的P-cadherin的构造变化.
- 分析了p120-catenin在P-cadherin内细胞分裂中的作用.
主要成果:
- 单克隆抗体CQY684将P-cadherin捕获到特定的X-二次体结构中,稳定了粘合结构.
- 这种稳定的X-二次体形成导致p120-catenin的解离,这是已知的抑制卡德林内细胞分裂的抑制剂.
- p120-catenin的解离促进了P-cadherin的周转,并将抗体-P-cadherin复合体引导到 lysosome.
结论:
- 已经确定了一种新型的调节P-cadherin内细胞分裂的外部-内信号机制.
- 这种机制涉及抗体诱导的P-cadherin X-二极体的稳定,p120-catenin解离,以及 lysosomal 向.
- 这些发现为设计抗P-cadherin抗体提供了基础,用于在癌症治疗中有效的细胞内药物输送.
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