Department of Biomaterials Science and Technology, Technical Medical Centre, Faculty of Science and Technology, University of Twente, Enschede, the Netherlands; Department of Pharmacy, Universitas Jenderal Soedirman, Purwokerto, Indonesia.
Department of Biomaterials Science and Technology, Technical Medical Centre, Faculty of Science and Technology, University of Twente, Enschede, the Netherlands.
J Control Release. 2020 Dec 10;328:640-652. doi: 10.1016/j.jconrel.2020.09.041. Epub 2020 Sep 24.
Liver diseases are the growing health problem with no clinically approved therapy available. Activated hepatic stellate cells (HSCs) are the key driver cells responsible for extracellular matrix deposition, the hallmark of liver fibrosis. Fibroblast growth factor 2 (FGF2) has shown to possess anti-fibrotic effects in fibrotic diseases including liver fibosis, and promote tissue regeneration. Among the fibroblast growth factor receptors (FGFRs), FGF2 interact primarily with FGFR1, highly overexpressed on activated HSCs, and inhibit HSCs activation. However, FGF2 poses several limitations including poor systemic half-life and stability owing to enzymatic degradation. The aim of this study is to improve the stability and half-life of FGF2 thereby improving the therapuetic efficacy of FGF2 for the treatment of liver fibrosis. We found that FGFR1-3 mRNA levels were overexpressed in cirrhotic human livers, while FGFR1c, 2c, 3c, 4 and FGF2 mRNA levels were overexpressed in TGFβ-activated HSCs (LX2 cells) and FGFR1 protein expression was highly increased in TGFβ-activated HSCs. Treatment with FGF2 inhibited TGFβ-induced HSCs activation, migration and contraction in vitro. FGF2 was conjugated to superparamagnetic iron-oxide nanoparticles (SPIONs) using carbodiimide chemistry, and the resulting FGF2-SPIONs were confirmed by dynamic light scattering (DLS), zeta potential, dot-blot analysis and Prussian Blue iron-staining. In vitro, treatment with FGF2-SPIONs evidenced increased therapeutic effects (attenuated TGFβ-induced HSCs activation, migration and contraction) of FGF2 in TGFβ-activated HSCs and ameliorated early liver fibrogenesis in vivo in acute carbon tetrachloride (CCl)-induced liver injury mouse model. In contrast, free FGF2 showed no significant effects in vivo. Altogether, this study presents a promising therapeutic approach using FGF2-SPIONs for the treatment of liver fibrosis.
肝脏疾病是一个日益严重的健康问题,但目前尚无临床批准的治疗方法。活化的肝星状细胞(HSCs)是负责细胞外基质沉积的关键驱动细胞,这是肝纤维化的标志。成纤维细胞生长因子 2(FGF2)已被证明在包括肝纤维化在内的纤维化疾病中具有抗纤维化作用,并促进组织再生。在成纤维细胞生长因子受体(FGFRs)中,FGF2 主要与 FGFR1 相互作用,FGFR1 在活化的 HSCs 中高度过表达,并抑制 HSCs 的活化。然而,FGF2 存在几个局限性,包括由于酶降解导致的系统半衰期和稳定性差。本研究旨在提高 FGF2 的稳定性和半衰期,从而提高 FGF2 治疗肝纤维化的治疗效果。我们发现,在肝硬化的人肝中,FGFR1-3 mRNA 水平过表达,而在 TGFβ 激活的 HSCs(LX2 细胞)中,FGFR1c、2c、3c、4 和 FGF2 mRNA 水平过表达,并且在 TGFβ 激活的 HSCs 中 FGFR1 蛋白表达显著增加。FGF2 处理抑制了 TGFβ 诱导的 HSCs 在体外的活化、迁移和收缩。FGF2 用碳二亚胺化学法与超顺磁氧化铁纳米颗粒(SPIONs)偶联,并用动态光散射(DLS)、Zeta 电位、点印迹分析和普鲁士蓝铁染色法证实了 FGF2-SPIONs 的形成。在体外,FGF2-SPIONs 的治疗显示出 FGF2 在 TGFβ 激活的 HSCs 中治疗效果的增加(减弱 TGFβ 诱导的 HSCs 活化、迁移和收缩),并在急性四氯化碳(CCl)诱导的肝损伤小鼠模型中改善了体内早期肝纤维化。相比之下,游离 FGF2 体内无明显作用。总之,本研究提出了一种使用 FGF2-SPIONs 治疗肝纤维化的有前途的治疗方法。
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