脂质体靶向共递送雷帕霉素和奥沙利铂抑制结直肠癌的肿瘤生长和转移。
Targeted co-delivery of rapamycin and oxaliplatin by liposomes suppresses tumor growth and metastasis of colorectal cancer.
机构信息
Department of Pharmacy, Biomedicine Research Center, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou 510150, China.
Department of Spinal Surgery, The Second Affiliated Hospital of Guangzhou Medical University, No. 250, Changgangdong Road, Guangzhou 510260, China.
出版信息
Biomed Pharmacother. 2024 Sep;178:117192. doi: 10.1016/j.biopha.2024.117192. Epub 2024 Aug 3.
The activation of tumor cell immunogenicity through oxaliplatin (OXP)-induced immunogenic cell death (ICD) has significant implications in cancer treatment. However, the anti-tumor effect of OXP monotherapy still has many shortcomings, and the systemic administration of OXP leads to low drug concentration at the tumor site, which is susceptible to systemic toxic side effects. In this study, a combined therapeutic strategy using folate-modified nanoliposomes co-delivered with rapamycin (Rapa) and OXP (abbreviated as FA@R/O Lps) is proposed for the treatment of colorectal cancer (CRC). Rapa and OXP can directly inhibit tumor cell proliferation and induce apoptosis. OXP induces ICD by triggering the release of danger signals, such as HMGB1, ATP, and calreticulin. FA@R/O Lps with a particle size of about 134.1±1.8 nm and a small dispersion were successfully prepared. This novel liposomal system can be used to target and increase drug accumulation in tumors. In-vivo experiments showed that FA@R/O Lps successfully inhibit CRC growth and liver metastasis, and simultaneously reduce off-target toxicity. In particular, FA@R/O Lps showed greater therapeutic effects than free Rapa/OXP and R/O Lps. Taken together, this study provides a novel combination of Rapa and OXP, and a nano-delivery system for enhanced anti-CRC efficacy. The results suggest that FA@R/O Lps could be a promising strategy for the treatment of CRC.
奥沙利铂(OXP)诱导免疫原性细胞死亡(ICD)激活肿瘤细胞免疫原性在癌症治疗中具有重要意义。然而,OXP 单药治疗的抗肿瘤作用仍存在诸多不足,且 OXP 全身给药导致肿瘤部位药物浓度低,易发生全身毒性副作用。在本研究中,提出了一种使用叶酸修饰的载雷帕霉素(Rapa)和奥沙利铂(OXP)的纳米脂质体(FA@R/O Lps)联合治疗结直肠癌(CRC)的策略。Rapa 和 OXP 可直接抑制肿瘤细胞增殖并诱导细胞凋亡。OXP 通过触发危险信号(如 HMGB1、ATP 和钙网蛋白)的释放来诱导 ICD。成功制备了粒径约为 134.1±1.8nm、分散性较小的 FA@R/O Lps。这种新型脂质体系统可用于靶向并增加肿瘤内药物积累。体内实验表明,FA@R/O Lps 成功抑制 CRC 生长和肝转移,同时降低了脱靶毒性。特别是,FA@R/O Lps 显示出比游离 Rapa/OXP 和 R/O Lps 更好的治疗效果。综上所述,本研究提供了 Rapa 和 OXP 的新组合和增强抗 CRC 疗效的纳米递药系统。结果表明,FA@R/O Lps 可能是治疗 CRC 的一种有前途的策略。