皮肤黑色素瘤中的线粒体氧化磷酸化。
Mitochondrial oxidative phosphorylation in cutaneous melanoma.
机构信息
Bob Champion Research and Education Building, Norwich Medical School, University of East Anglia, Norwich, UK.
Department of Haematology, Norfolk and Norwich University Hospital, Norwich, UK.
出版信息
Br J Cancer. 2021 Jan;124(1):115-123. doi: 10.1038/s41416-020-01159-y. Epub 2020 Nov 18.
The Warburg effect in tumour cells is associated with the upregulation of glycolysis to generate ATP, even under normoxic conditions and the presence of fully functioning mitochondria. However, scientific advances made over the past 15 years have reformed this perspective, demonstrating the importance of oxidative phosphorylation (OXPHOS) as well as glycolysis in malignant cells. The metabolic phenotypes in melanoma display heterogeneic dynamism (metabolic plasticity) between glycolysis and OXPHOS, conferring a survival advantage to adapt to harsh conditions and pathways of chemoresistance. Furthermore, the simultaneous upregulation of both OXPHOS and glycolysis (metabolic symbiosis) has been shown to be vital for melanoma progression. The tumour microenvironment (TME) has an essential supporting role in promoting progression, invasion and metastasis of melanoma. Mesenchymal stromal cells (MSCs) in the TME show a symbiotic relationship with melanoma, protecting tumour cells from apoptosis and conferring chemoresistance. With the significant role of OXPHOS in metabolic plasticity and symbiosis, our review outlines how mitochondrial transfer from MSCs to melanoma tumour cells plays a key role in melanoma progression and is the mechanism by which melanoma cells regain OXPHOS capacity even in the presence of mitochondrial mutations. The studies outlined in this review indicate that targeting mitochondrial trafficking is a potential novel therapeutic approach for this highly refractory disease.
肿瘤细胞中的瓦博格效应与糖酵解的上调有关,即使在正常氧条件下和完全功能的线粒体存在下,也能产生 ATP。然而,过去 15 年的科学进步改变了这一观点,证明了氧化磷酸化(OXPHOS)和糖酵解在恶性细胞中的重要性。黑色素瘤的代谢表型显示出糖酵解和 OXPHOS 之间异质的动态变化(代谢可塑性),赋予了适应恶劣条件和化疗耐药途径的生存优势。此外,同时上调 OXPHOS 和糖酵解(代谢共生)对于黑色素瘤的进展至关重要。肿瘤微环境(TME)在促进黑色素瘤的进展、侵袭和转移中起着重要的支持作用。TME 中的间充质基质细胞(MSCs)与黑色素瘤表现出共生关系,保护肿瘤细胞免受凋亡,并赋予化疗耐药性。由于 OXPHOS 在代谢可塑性和共生中的重要作用,我们的综述概述了 MSCs 中的线粒体从 MSC 向黑色素瘤肿瘤细胞的转移如何在黑色素瘤进展中发挥关键作用,以及黑色素瘤细胞如何在存在线粒体突变的情况下重新获得 OXPHOS 能力的机制。本综述中概述的研究表明,靶向线粒体转运是治疗这种高度难治性疾病的一种潜在新方法。