Department of Anesthesiology, The First Hospital of China Medical University, No. 155, Nanjing North Street, Heping District, Shenyang, 110001, Liaoning Province, China.
Department of breast surgery, The First Hospital of China Medical University, Shenyang, 110001, Liaoning Province, China.
J Nanobiotechnology. 2024 Aug 9;22(1):473. doi: 10.1186/s12951-024-02717-9.
BACKGROUND: Hepatocellular carcinoma (HCC) is a highly malignant tumor known for its hypoxic environment, which contributes to resistance against the anticancer drug Sorafenib (SF). Addressing SF resistance in HCC requires innovative strategies to improve tumor oxygenation and effectively deliver therapeutics. RESULTS: In our study, we explored the role of KPNA4 in mediating hypoxia-induced SF resistance in HCC. We developed hemoglobin nanoclusters (Hb-NCs) capable of carrying oxygen, loaded with indocyanine green (ICG) and SF, named HPRG@SF. In vitro, HPRG@SF targeted HCC cells, alleviated hypoxia, suppressed KPNA4 expression, and enhanced the cytotoxicity of PDT against hypoxic, SF-resistant HCC cells. In vivo experiments supported these findings, showing that HPRG@SF effectively improved the oxygenation within the tumor microenvironment and countered SF resistance through combined photodynamic therapy (PDT). CONCLUSION: The combination of Hb-NCs with ICG and SF, forming HPRG@SF, presents a potent strategy to overcome drug resistance in hepatocellular carcinoma by improving hypoxia and employing PDT. This approach not only targets the hypoxic conditions that underlie resistance but also provides a synergistic anticancer effect, highlighting its potential for clinical applications in treating resistant HCC.
背景:肝细胞癌 (HCC) 是一种高度恶性肿瘤,以其缺氧环境为特征,这导致其对抗癌药物索拉非尼 (SF) 产生耐药性。解决 HCC 中的 SF 耐药性需要创新策略来改善肿瘤氧合并有效输送治疗药物。
结果:在我们的研究中,我们探讨了 KPNA4 在介导 HCC 中缺氧诱导的 SF 耐药性中的作用。我们开发了能够携带氧气的血红蛋白纳米簇 (Hb-NCs),并将其与吲哚菁绿 (ICG) 和 SF 负载,命名为 HPRG@SF。在体外,HPRG@SF 靶向 HCC 细胞,减轻缺氧,抑制 KPNA4 表达,并增强 PDT 对缺氧、SF 耐药 HCC 细胞的细胞毒性。体内实验支持了这些发现,表明 HPRG@SF 通过联合光动力疗法 (PDT) 有效改善了肿瘤微环境中的氧合作用,并克服了 SF 耐药性。
结论:将 Hb-NCs 与 ICG 和 SF 结合形成 HPRG@SF,提出了一种通过改善缺氧和利用 PDT 来克服肝细胞癌药物耐药性的有效策略。这种方法不仅针对耐药性的缺氧条件,而且还提供了协同的抗癌作用,突出了其在治疗耐药性 HCC 中的临床应用潜力。
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