Department of Dermatology, Affiliated Hospital of Weifang Medical University, Weifang 261031, China.
ACS Biomater Sci Eng. 2024 Jan 8;10(1):588-598. doi: 10.1021/acsbiomaterials.3c01223. Epub 2023 Dec 20.
Melanoma is a malignant tumor that originates from melanocytes. The incidence of melanoma is increasing worldwide, partially because of its insensitivity to radiotherapy or chemotherapy. Therefore, effective treatments for melanoma are urgently required. In this study, we employed folic acid-modified sulfasalazine long-circulating liposomes (FA-SSZ-Lips) to precisely target drug delivery to melanoma cells, eliciting ferroptosis effectively. The synthesized FA-SSZ-Lips were characterized as small spheres of a double-layer membrane, a particle size of 110.1 nm, and a ζ-potential of -22.8 ± 0.66 mV. FA-SSZ-Lips are effective drug carriers with SSZ-loading ratio and SSZ release rate of 6.2 ± 0.10%, and 72.63 ± 1.40%, respectively. The liposomes enhanced SSZ solubility, and the folic acid modifications increased the liposome targeting to melanoma cells. Compared with SSZ alone, FA-SSZ-Lips more strongly inhibited B16F10 cell growth, significantly disrupted the intracellular redox balance, and induced ferroptosis. After treatment, considerable differences were observed in the tumor volumes between FA-SSZ-Lips and phosphate-buffered saline control groups. The tumor growth-inhibition value of the FA-SSZ-Lips group reached 70.09%. Thus, FA-SSZ-Lips exhibited favorable antitumor effects and and are a promising strategy for melanoma treatment.
黑色素瘤是一种起源于黑色素细胞的恶性肿瘤。全球范围内黑色素瘤的发病率正在上升,部分原因是其对放疗或化疗不敏感。因此,迫切需要有效的黑色素瘤治疗方法。在这项研究中,我们使用叶酸修饰的柳氮磺胺吡啶长循环脂质体(FA-SSZ-Lips)将药物精确靶向递送至黑色素瘤细胞,有效地引发铁死亡。合成的 FA-SSZ-Lips 被表征为双层膜的小球,粒径为 110.1nm,ζ-电位为-22.8±0.66mV。FA-SSZ-Lips 是有效的药物载体,SSZ 的载药率和 SSZ 的释放率分别为 6.2±0.10%和 72.63±1.40%。脂质体提高了 SSZ 的溶解度,而叶酸修饰增加了脂质体对黑色素瘤细胞的靶向性。与 SSZ 单独治疗相比,FA-SSZ-Lips 更强烈地抑制 B16F10 细胞生长,显著破坏细胞内氧化还原平衡,并诱导铁死亡。治疗后,FA-SSZ-Lips 组和磷酸盐缓冲盐水对照组之间的肿瘤体积有明显差异。FA-SSZ-Lips 组的肿瘤生长抑制值达到 70.09%。因此,FA-SSZ-Lips 表现出良好的抗肿瘤效果,是治疗黑色素瘤的一种有前途的策略。