1)广西医科大学基础医学院生理学教研室,南宁 530021;2)广西高校区域性疾病基础研究重点实验室(广西医科大学),南宁 530021
国家自然科学基金(U22A20374)资助项目。
1)Department of Physiology, School of Basic Medical Sciences, Guangxi Medical University, Nanning 530021, China;2)Key Laboratory of Basic Research on Regional Diseases (Guangxi Medical University), Nanning 530021, China
This work was supported by a grant from The National Natural Science Foundation of China (U22A20374).
肝癌是世界上发病率较高的致死性恶性肿瘤之一,在化疗、靶向治疗或经导管动脉化疗栓塞术(transcatheter arterial chemoembolization,TACE)之后容易出现复发以及产生耐药的情况,这主要是因为肿瘤细胞对缺氧、营养不良及药物刺激具有很强的适应性。而近年来的研究显示,溶酶体是细胞内的一个降解、物质循环、信号整合及死亡调控的重要细胞器,对于肝癌治疗及耐药性的产生起着重要的作用。在药物的作用下,肿瘤细胞一般通过加强溶酶体的酸化、增加溶酶体降解作用、维持细胞内的自噬通量、激活转录因子EB/转录因子E3(transcription factor EB/transcription factor E3,TFEB/TFE3)介导的溶酶体生物合成以及把药物摄取到溶酶体内隔离等方式维持细胞内环境平衡,使进入肿瘤细胞的化疗药物剂量减少,逃避化疗的伤害。而中草药单体具有结构多样性及多靶点调节的功能,可以抑制溶酶体的酸化、阻断保护性的自噬、破坏溶酶体的膜完整性、调控铁死亡敏感性及影响溶酶体生物合成等途径,破坏肿瘤细胞对微环境应激的适应性,并可联合索拉非尼、阿霉素等药物发挥抗肿瘤的作用。本文以肝癌微环境中的溶酶体稳态为核心,总结了以溶酶体为靶点的天然产物联合化疗药物治疗肝癌的作用机理、增敏措施及转化难题等内容,以期为逆转肝癌耐药及优化个体化联合治疗方案提供新的方法和思路。
Liver cancer is one of the world""s serious diseases today because of its high frequency and fatality rate, genetic differences, and limited effectiveness of late-stage therapy. Although chemotherapy, targeted therapy, immunotherapy, ablation and transarterial chemoembolisation (TACE) have improved the disease control of some patients, recurrence and acquired resistance are still common, especially for tumors that are hypoxic, nutrient-deprived, acidic-stressed, vascularly insufficient and exposed to repeated drug pressure. A bad environment will cause a change in the quality-control system and metabolism of cancer cells, and as a result, lysosomes have started to alter. In addition to the above catabolic functions of lysosomes, they also take part in autophagic flux, substrate recycling, iron and lipid metabolism, nutrient sensing, drug distribution, membrane repair and cell death signalling. Under the stress of therapy in liver cancer cells, increased lysosomal acidification and enhanced terminal degradation lead to prolonged autophagy; TFEB/TFE3 promotes the formation of new lysosomes and lysophagosomes to sequester weakly basic drugs, thereby reducing the concentration of active drugs and mitigating proteotoxicity and oxidative stress to promote cell survival. The above processes produce a lysosome-dependent resistant phenotype that is particularly relevant to sorafenib and doxorubicin and other drugs whose effectiveness can be reduced by protective autophagy or changes in intracellular location. Conversely, the same dependency on lysosomal homeostasis is also a vulnerability. Natural products and monomeric compounds derived from Chinese herbal medicines have various structures, multiple target regulation capabilities, and the potential to act on several lysosome-related nodes simultaneously. Based on the evidence in this review, it is believed that such compounds may sensitise liver cancer cells by inhibiting V-ATPase-mediated acid hydrolysis, obstructing late-stage autophagy-mediated degradation, disrupting lysosomal calcium or membrane homeostasis, causing lysosomal membrane permeabilisation, reducing compensatory lysosomal biogenesis, promoting ferritin degradation and ferroptosis, or enhancing acid-responsive intracellular delivery. Agents that impair lysosomal function and protective autophagy, compounds that convert enlarged or drug-sequestering lysosomes into lethal targets, and nanodelivery systems that exploit the acidic environment of endolysosomes to co-deliver natural products with chemotherapeutic drugs are examples. Lysosome-targeted intervention will have different effects under different circumstances; for example, inhibiting autophagy may result in an increase in cytotoxic stress in some areas, whereas overstimulation of autophagy or iron release from lysosomes may induce autophagic cell death or ferroptosis in other areas. Therefore, the design of therapy should take into account the status of the tumour microenvironment, autophagic flux, lysosomal pH, TFEB/TFE3 activity, drug sequestration capacity, ferroptosis sensitivity, dosing sequence and delivery route. This review systematically examines the lysosomal homeostasis in the microenvironment of liver cancer, the mechanisms through which lysosomal adaptation contributes to chemoresistance, and the rationale for combining natural products with standard agents such as sorafenib and doxorubicin. Based on basic lysosome biology, pharmacodynamic and delivery data have also been collected; as a result, some applications for future studies have been proposed, such as dynamic monitoring of autophagy flux, in vivo spatial measurements of lysosomal functions, rational optimisation of combination therapy timings, and safety assessments in immunocompetent liver cancer models prior to clinical translation. Translation difficulties are also evident, such as insufficient tumour selectivity, pharmacokinetic limitations, compensatory lysosomal regeneration, toxicity to normal liver and immune cells, and a lack of validated predictive biomarkers. A new way will be found to use biomarkers to divide the patient group, optimize nanoparticles for better delivery, design specific schedules for combined treatments based on the problem they cause within the cell, etc., thereby overcoming drug resistance and reducing the harm patients suffer from toxic treatments. This system can help select biomarkers and rational drug pairs for the next round of lysosome-centred precision trials.
黄春萍,黎永卓,周静.溶酶体稳态与肝癌化疗耐药:靶向溶酶体的天然产物联合策略[J].生物化学与生物物理进展,2026,53(7):1867-1883 HUANG Chun-Ping, LI Yong-Zhuo, ZHOU Jing. Lysosomal Homeostasis and Chemoresistance in Liver Cancer: Natural Product-based Combination Strategies Targeting Lysosomes[J]. Progress in Biochemistry and Biophysics,2026,53(7):1867-1883
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