自噬与铁死亡在非酒精性脂肪肝中作用机制及减重代谢手术的研究进展

Research progress on mechanisms of autophagy and ferroptosis in non-alcoholic fatty liver disease and effects of metabolic and bariatric surgery

  • 摘要: 非酒精性脂肪性肝病(NAFLD)是全球最常见的慢性肝病,患病率持续攀升且呈现年轻化趋势。近年研究揭示,自噬与铁死亡通过线粒体自噬受体FUNDC1形成关键串扰网络,其失衡构成NAFLD进展的核心机制。研究及指南均强调铁死亡在非酒精性脂肪性肝炎(NASH)中的致病作用,并将铁死亡抑制剂(如Liproxstatin-1)列为Ⅱ期临床重要靶点。减重代谢手术(如袖状胃切除术)可通过上调FUNDC1、抑制HIF-1α/NOX4通路,恢复自噬-铁死亡平衡,显著改善铁过载、脂质过氧化及胰岛素抵抗。多中心临床与动物实验证实,术后铁死亡标志物(4-HNE、铁蛋白)下降与HOMA-IR、HbA1c改善显著相关,且联合铁死亡抑制剂可协同增强胰岛素信号通路修复。本文系统综述该分子轴的调控机制及干预策略,为NAFLD精准治疗提供理论依据。

     

    Abstract: Non-alcoholic fatty liver disease (NAFLD) is the most prevalent chronic liver disease globally, with its incidence rate continuously rising and showing a trend of affecting younger populations. Recent studies have revealed that autophagy and ferroptosis form a critical crosstalk network via the mitochondrial autophagy receptor FUNDC1, and their imbalance constitutes the core mechanism underlying the progression of NAFLD. Both research and guidelines emphasize the pathogenic role of ferroptosis in non-alcoholic steatohepatitis (NASH) and list ferroptosis inhibitors (such as Liproxstatin-1) as important targets in phase Ⅱ clinical trials. Metabolic and bariatric surgery (such as sleeve gastrectomy) can restore the balance between autophagy and ferroptosis by upregulating FUNDC1 and inhibiting the HIF-1α/NOX4 pathway, significantly improving iron overload, lipid peroxidation, and insulin resistance. Multi-center clinical and animal experiments have confirmed that the decline in ferroptosis markers (4-HNE, ferritin) after surgery is significantly associated with improvements in HOMA-IR and HbA1c, and the combination with ferroptosis inhibitors can synergistically enhance the repair of insulin signaling pathways. This article systematically reviewed the regulatory mechanisms and intervention strategies of this molecular axis, providing a theoretical basis for the precise treatment of NAFLD.

     

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