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Imatinib reduces non-alcoholic fatty liver disease in obese mice by targeting inflammatory and lipogenic pathways in macrophages and liver.
Scientific Reports ( IF 4.6 ) Pub Date : 2018-Oct-17 , DOI: 10.1038/s41598-018-32853-w
Shefaa AlAsfoor , Theresa V. Rohm , Angela J. T. Bosch , Thomas Dervos , Diego Calabrese , Matthias S. Matter , Achim Weber , Claudia Cavelti-Weder

Macrophages have been recognized as key players in non-alcoholic fatty liver disease (NAFLD). Our aim was to assess whether pharmacological attenuation of macrophages can be achieved by imatinib, an anti-leukemia drug with known anti-inflammatory and anti-diabetic properties, and how this impacts on NAFLD. We analyzed the pro- and anti-inflammatory gene expression of murine macrophages and human monocytes in vitro in the presence or absence of imatinib. In a time-resolved study, we characterized metabolic disease manifestations such as hepatic steatosis, systemic and adipose tissue inflammation as well as lipid and glucose metabolism in obese mice at one and three months of imatinib treatment. Our results showed that imatinib lowered pro-inflammatory markers in murine macrophages and human monocytes in vitro. In obese mice, imatinib reduced TNFα-gene expression in peritoneal and liver macrophages and systemic lipid levels at one month. This was followed by decreased hepatic steatosis, systemic and adipose tissue inflammation and increased insulin sensitivity after three months. As the transcription factor sterol regulatory element-binding protein (SREBP) links lipid metabolism to the innate immune response, we assessed the gene expression of SREBPs and their target genes, which was indeed downregulated in the liver and partially in peritoneal macrophages. In conclusion, targeting both inflammatory and lipogenic pathways in macrophages and liver as shown by imatinib could represent an attractive novel therapeutic strategy for patients with NAFLD.

中文翻译:

伊马替尼可通过靶向巨噬细胞和肝脏中的炎症和脂肪生成途径,减轻肥胖小鼠的非酒精性脂肪肝疾病。

巨噬细胞已被认为是非酒精性脂肪肝疾病(NAFLD)的关键参与者。我们的目的是评估伊马替尼(一种具有已知的抗炎和抗糖尿病特性的抗白血病药物)是否可以实现巨噬细胞的药理学减毒,以及这对NAFLD的影响。我们在存在或不存在伊马替尼的情况下分析了小鼠巨噬细胞和人单核细胞的促炎和抗炎基因表达。在一项时间分辨的研究中,我们对伊马替尼治疗1个月和3个月后肥胖小鼠的代谢性疾病表现进行了表征,例如肝脂肪变性,全身性和脂肪组织炎症以及脂质和葡萄糖代谢。我们的结果表明,伊马替尼在体外可降低鼠巨噬细胞和人单核细胞中的促炎性标志物。在肥胖的老鼠中 伊马替尼在一个月时降低了腹膜和肝巨噬细胞中的TNFα基因表达以及全身脂质水平。随后三个月后,肝脏脂肪变性减少,全身和脂肪组织炎症降低,胰岛素敏感性增加。由于转录因子固醇调节元件结合蛋白(SREBP)将脂质代谢与先天免疫反应联系在一起,因此我们评估了SREBPs及其靶基因的基因表达,其在肝脏和部分腹膜巨噬细胞中的表达均被下调。总之,以伊马替尼显示,靶向巨噬细胞和肝脏中的炎症和脂肪生成途径可能代表了NAFLD患者的一种有吸引力的新颖治疗策略。随后三个月后,肝脏脂肪变性减少,全身和脂肪组织炎症降低,胰岛素敏感性增加。由于转录因子固醇调节元件结合蛋白(SREBP)将脂质代谢与先天免疫反应联系在一起,因此我们评估了SREBPs及其靶基因的基因表达,其在肝脏和部分腹膜巨噬细胞中的表达均被下调。总之,以伊马替尼显示,靶向巨噬细胞和肝脏中的炎症和脂肪生成途径可能代表了NAFLD患者的一种有吸引力的新颖治疗策略。随后三个月后,肝脏脂肪变性减少,全身和脂肪组织炎症降低,胰岛素敏感性增加。由于转录因子固醇调节元件结合蛋白(SREBP)将脂质代谢与先天免疫反应联系在一起,因此我们评估了SREBPs及其靶基因的基因表达,其在肝脏和部分腹膜巨噬细胞中的表达均被下调。总之,以伊马替尼显示,靶向巨噬细胞和肝脏中的炎症和脂肪生成途径可能代表了NAFLD患者的一种有吸引力的新颖治疗策略。由于转录因子固醇调节元件结合蛋白(SREBP)将脂质代谢与先天免疫反应联系在一起,因此我们评估了SREBPs及其靶基因的基因表达,其在肝脏和部分腹膜巨噬细胞中的表达均被下调。总之,以伊马替尼显示,靶向巨噬细胞和肝脏中的炎症和脂肪生成途径可能代表了NAFLD患者的一种有吸引力的新颖治疗策略。由于转录因子固醇调节元件结合蛋白(SREBP)将脂质代谢与先天免疫反应联系在一起,因此我们评估了SREBPs及其靶基因的基因表达,其在肝脏和部分腹膜巨噬细胞中的表达均被下调。总之,以伊马替尼显示,靶向巨噬细胞和肝脏中的炎症和脂肪生成途径可能代表了NAFLD患者的一种有吸引力的新颖治疗策略。
更新日期:2018-10-17
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