Platelet‐Drug Conjugates Engineered via One‐step Fusion Approach for Metastatic and Postoperative Cancer Treatment
Zhengjie Zhao, Yinxian Yang, Tao Sheng, Yuhang Bao, Ruixi Yu, Xinmin Yu, Shuangxu Jia, Qing Wu, Chaojie Zhu, Xinyuan Shen, Wentao Zhang, Ziyi Lu, Kangfan Ji, Xiaofeng Chen, Xinyun Jiang, Yuqi Zhang, Zhen Gu, Jicheng Yu, Jicheng Yu
Abstract
The exploration of cell-based drug delivery systems for cancer therapy has gained growing attention. Approaches to engineering therapeutic cells with multidrug loading in an effective, safe, and precise manner while preserving their inherent biological properties remain of great interest. Here, we report a strategy to simultaneously load multiple drugs in platelets in a one-step fusion process. We demonstrate doxorubicin (DOX)-encapsulated liposomes conjugated with interleukin-15 (IL-15) could fuse with platelets to achieve both cytoplasmic drug loading and surface cytokine modification with a loading efficiency of over 70 % within minutes. Due to their inherent targeting ability to metastatic cancers and postoperative bleeding sites, the engineered platelets demonstrated a synergistic therapeutic effect to suppress lung metastasis and postoperative recurrence in mouse B16F10 melanoma tumor models.