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点击释放可控制的免疫细胞激活:针对瘤的IL12原药的罩揭示

Martijn H den Brok¹, Kim E de Roode^1,2, Luc H M Zijlmans¹

¹Tagworks Pharmaceuticals, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands.

Pharmaceuticals (Basel, Switzerland)

|September 27, 2025

概括

一种新的点击释放免疫疗法策略使用掩盖的INTERLEUKIN-12 (IL12) 来降低毒性. 这种方法可以通过在瘤内释放活性IL12来实现向癌症治疗,从而提高安全性和疗效.

科学领域:

生物技术是生物技术.
免疫学免疫学免疫学
药物运输药物运输药物运输

背景情况:

干白素-12 (IL12) 免疫疗法在癌症治疗中显示出前景,但受到系统性毒性限制.
目前的交付方法在实现目标激活和最大限度地减少非目标效应方面面临挑战.

研究的目的:

为IL12开发一种新的"点击释放"前药物策略,以使瘤微环境中的向激活成为可能.
用PEG和生物对等点击化学来控制释放,以化学掩盖IL12.

主要方法:

开发并优化了使用PEGylation和生物对等的逆电子需求Diels-Alder (IEDDA) 点击反应的掩盖IL12结构.
使用一种预定向策略,使用瘤向的糖尿病体与四素 (Tz) 结合.
在体外,体外和体内使用PAGE,ELISA和放射性标记进行了评估掩盖,揭露和生物分布.

主要成果:

一个优化的IL12-TCO-PEG结构证明了与瘤局部化四素反应后的有效掩蔽和随后的激活.
使用diabody-tetrazine进行预定目标,有效地在瘤中积累了点击化学成分.
在瘤内观察到选择性IL12揭露,在全身循环中释放的最小.

结论:

点击释放前药物方法为基于IL12的更安全,更有效的癌症免疫疗法提供了概念证明.
这一策略突出了生物对角点击化学的多功能性,用于在特定的生物环境中按需激活药物.

关键词:

在 IL12 中, IL12 是 IL12 的代名词.生物对等的生物对等.癌症癌症癌症癌症癌症点击点击点击点击点击点击点击点击释放的释放.细胞因子细胞因子免疫疗法免疫疗法掩盖的掩饰掩盖的掩饰聚乙烯基甘的使用方法这是一种四氨酸 (tetrazine).超环氧 octene 的使用.揭开面具揭开面具

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