Han Hyeonjeong, Jung Jik-Han, Lee Hyoungjin, Lee Junsung, Jang Seong-Hoon, Goh Unbyeol, Yoon Jooeun, Park Ji-Ho
Department of Bio and Brain Engineering, and KAIST Institute for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
ACS Biomater Sci Eng. 2023 Apr 10;9(4):1919-1927. doi: 10.1021/acsbiomaterials.2c01490. Epub 2023 Mar 15.
Nanoparticle-based drug delivery has been widely used for effective anticancer treatment. However, a key challenge restricting the efficacy of nanotherapeutics is limited tissue penetration within solid tumors. Here, we report a targeted fusogenic liposome (TFL) that can selectively deliver lipophilic cargo to the plasma membranes of tumor cells. TFL is prepared by directly attaching tumor-targeting peptides to the surface of FL instead of the cationic moieties. The lipophilic cargo loaded in the membrane of TFL is transferred to the plasma membranes of tumor cells and subsequently packaged in the extracellular vesicles (EVs) released by the cells. Systemically administered TFL accumulates in the perivascular region of tumors, where the lipophilic cargo is unloaded to the tumor cell membranes and distributed autonomously throughout the tumor tissue extracellular vesicle-mediated intercellular transfer. When loaded with a lipophilic pro-apoptotic drug, thapsigargin (Tg), TFL significantly inhibits tumor growth in a mouse colorectal cancer model. Furthermore, the combination treatment with TFL (Tg) potentiates the antitumor efficacy of FDA-approved liposomal doxorubicin, whose therapeutic effect is limited to perivascular regions without significant toxicity.
基于纳米颗粒的药物递送已被广泛用于有效的抗癌治疗。然而,限制纳米疗法疗效的一个关键挑战是实体肿瘤内组织穿透有限。在此,我们报告了一种靶向融合脂质体(TFL),它可以将亲脂性货物选择性地递送至肿瘤细胞的质膜。TFL是通过将肿瘤靶向肽直接连接到FL的表面而不是阳离子部分来制备的。装载在TFL膜中的亲脂性货物被转移到肿瘤细胞的质膜,随后被包装在细胞释放的细胞外囊泡(EVs)中。全身给药的TFL在肿瘤的血管周围区域积累,亲脂性货物在那里被卸载到肿瘤细胞膜上,并通过细胞外囊泡介导的细胞间转移在整个肿瘤组织中自主分布。当装载亲脂性促凋亡药物毒胡萝卜素(Tg)时,TFL在小鼠结直肠癌模型中显著抑制肿瘤生长。此外,TFL(Tg)联合治疗增强了FDA批准的脂质体阿霉素的抗肿瘤疗效,其治疗效果仅限于血管周围区域且无明显毒性。