Targeted Delivery of c(RGDfk)‐Modified Liposomes to Bone Marrow Through In Vivo Hitchhiking Neutrophils for Multiple Myeloma Therapy

骨髓 多发性骨髓瘤 药物输送 癌症研究 体内 医学 肿瘤微环境 脂质体 药理学 药品 免疫学 化学 生物 生物化学 肿瘤细胞 生物技术 有机化学
作者
Huiwen Liu,Bo Zhang,Hongrui Chen,Honglan Wang,Xifeng Qin,Chunyan Sun,Zhiqing Pang,Yu Hu
出处
期刊:Advanced Science [Wiley]
标识
DOI:10.1002/advs.202409895
摘要

Abstract Multiple myeloma (MM) is a prevalent bone marrow disorder. The challenges in managing MM include selecting chemotherapy regimens that effectively modulate the myeloma microenvironment and delivering them to the bone marrow with high efficacy and minimal toxicity. Herein, a novel bone marrow targeting strategy using c(RGDfk) peptide‐modified liposomes loaded with chemotherapeutics is developed, which can specifically recognize and hitchhike neutrophils following systemic administration, capitalizing on their natural aging process to facilitate precise drug delivery to the bone marrow, thus minimizing off‐target effects. On the one hand, c(RGDfk)‐functionalized liposomes containing carfilzomib (CRLPs) successfully transformed macrophages from M2 phenotype to M1 phenotype, enhancing immunotherapeutic responses. On the other hand, c(RGDfk)‐functionalized liposomes encapsulating BMS‐202 (BRLPs), a small molecule checkpoint inhibitor, interrupted the PD‐1/PD‐L1 axis and promoted the infiltration of cytotoxic T cells. The co‐administration of CRLPs and BRLPs successfully delivered drugs to bone marrow, leading to significant modulation of the myeloma microenvironment, reduced tumor growth, and improved survival time of MM‐bearing mouse models. These findings introduced an alternative approach to modulating the myeloma microenvironment and underscored the efficacy of hitchhiking neutrophils for bone marrow drug delivery. This strategy show advantages over traditional drug delivery methods in terms of improved efficacy and lowered toxicity.
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