用于瘤治疗的酶响应性解性多
Renyong Yin1, Penqi Wan2, Zhihui Guo1
1Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, PR China.
一种新型的性酸酶响应型多前体 (C12-PLL/PA) 通过将瘤内的负电荷转化为正电荷,有效地向并摧毁癌细胞. 这种酶激活的解聚合物显示出显著的瘤抑制与最小的副作用,提供一个更安全的癌症治疗方法.
科学领域:
- 生物材料科学 生物材料科学
- 聚合物化学 聚合物化学
- 癌症治疗方法 癌症治疗方法
背景情况:
- 模仿宿主防御的阴离子解聚合物对癌症治疗有希望.
- 现有的阴离子聚合物面临着快速清除和目标外毒性的挑战.
- 需要选择性瘤和更安全的解性聚合物策略至关重要.
研究的目的:
- 开发一种酶响应性性多前体,用于增强体内癌症治疗.
- 设计一种可在瘤微环境内选择性激活的聚合物.
- 为了减轻与高阴离子聚合物相关的毒性.
主要方法:
- 合成一种性酸酶 (ALP) 响应的多前体 (C12-PLL/PA).
- 在瘤中通过细胞外ALP对C12-PLL/PA进行水解,产生活性C12-PLL.
- 在4T1乳腺瘤模型中评估膜-活动,癌细胞破坏和体内瘤抑制.
主要成果:
- 通过瘤特异性ALP活性,C12-PLL/PA可选择性地转化为活性,膜性C12-PLL形式.
- 激活的多有效地破坏癌细胞膜,诱导快速亡.
- 在4T1正型乳腺瘤模型中观察到显著的瘤生长抑制,副作用可以忽略不计.
结论:
- 用酸盐部分屏蔽 cationic 群组创建了一个安全和有效的 oncolytic 聚前体.
- 酶响应激活为瘤特异性输送和降低全身毒性提供了一个有希望的策略.
- 这种方法为设计下一代酶激活解聚合物用于癌症治疗提供了宝贵的参考.
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