Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325035, China.
Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China.
J Nanobiotechnology. 2024 Aug 20;22(1):498. doi: 10.1186/s12951-024-02778-w.
Microcarrier is a promising drug delivery system demonstrating significant value in treating cancers. One of the main goals is to devise microcarriers with ingenious structures and functions to achieve better therapeutic efficacy in tumors. Here, inspired by the nucleus-cytoplasm structure of cells and the material exchange reaction between them, we develop a type of biorthogonal compartmental microparticles (BCMs) from microfluidics that can separately load and sequentially release cyclooctene-modified doxorubicin prodrug (TCO-DOX) and tetrazine-modified indocyanine green (Tz-ICG) for tumor therapy. The Tz-ICG works not only as an activator for TCO-DOX but also as a photothermal agent, allowing for the combination of bioorthogonal chemotherapy and photothermal therapy (PTT). Besides, the modification of DOX with cyclooctene significantly decreases the systemic toxicity of DOX. As a result, the developed BCMs demonstrate efficient in vitro tumor cell eradication and exhibit notable tumor growth inhibition with favorable safety. These findings illustrate that the formulated BCMs establish a platform for bioorthogonal prodrug activation and localized delivery, holding significant potential for cancer therapy and related applications.
微载体是一种很有前途的药物输送系统,在治疗癌症方面显示出了巨大的价值。其主要目标之一是设计具有巧妙结构和功能的微载体,以在肿瘤中实现更好的治疗效果。在这里,受细胞核质结构和它们之间物质交换反应的启发,我们通过微流控技术开发了一种双正交隔室微颗粒(BCMs),它可以分别装载并顺序释放环辛烯修饰的阿霉素前药(TCO-DOX)和四嗪修饰的吲哚菁绿(Tz-ICG),用于肿瘤治疗。Tz-ICG 不仅可以作为 TCO-DOX 的激活剂,还可以作为光热剂,实现生物正交化学疗法和光热疗法(PTT)的联合。此外,用环辛烯修饰 DOX 显著降低了 DOX 的全身毒性。因此,所开发的 BCMs 在体外肿瘤细胞消除方面表现出高效,并具有显著的肿瘤生长抑制作用和良好的安全性。这些发现表明,所构建的 BCMs 为生物正交前药激活和局部递药建立了一个平台,为癌症治疗和相关应用提供了巨大的潜力。