Wang Luyao, Zhu Ye, Huang Chengying, Pan Qiuming, Wang Junxi, Li Hongrui, Huang Yudi, Yi Guozhong, Li Zhiyong, Qi Songtao, Huang Guanglong, Qu Shanqiang
Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China.
The First Clinical School of Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China.
Genes Dis. 2025 May 9;12(6):101678. doi: 10.1016/j.gendis.2025.101678. eCollection 2025 Nov.
Ferroptosis, a distinct regulated cell death process characterized by iron retention and lipid peroxidation, plays a crucial role in the survival of cancer stem cells (CSCs), key contributors to cancer initiation, progression, and recurrence. CSCs exhibit enhanced iron uptake and altered lipid metabolism, allowing them to evade conventional therapies and persist within the cancer microenvironment. Their resilience is linked to low reactive oxygen species levels, aiding survival under oxidative stress. Key regulatory pathways, including the cystine/glutathione axis, significantly modulate CSCs' sensitivity to ferroptosis by maintaining a balance between antioxidant defenses and pro-oxidative stressors. Targeting ferroptosis in CSCs offers promising therapeutic avenues for enhancing treatment efficacy and overcoming resistance. Strategies such as pharmacological inhibition of the SLC7A11 transporter, which reduces cysteine availability and glutathione levels, can potentiate ferroptosis in CSCs. Additionally, inducing dysregulation of iron metabolism or lipid peroxidation can selectively compromise CSCs' survival. Nanoparticle drug delivery systems that increase intracellular iron and reactive oxygen species levels are proving effective in targeting CSCs with minimal impact on normal cells. Ultimately, a comprehensive understanding of the interplay between ferroptosis and CSCs' biology is essential for developing innovative strategies aimed at eradicating these elusive cells, thereby improving cancer treatment outcomes and reducing recurrence rates.
铁死亡是一种独特的程序性细胞死亡过程,其特征为铁潴留和脂质过氧化,在癌症干细胞(CSCs)的存活中起关键作用,而癌症干细胞是癌症起始、进展和复发的主要促成因素。癌症干细胞表现出铁摄取增强和脂质代谢改变,使其能够逃避传统疗法并在癌症微环境中持续存在。它们的抗逆性与低活性氧水平有关,有助于在氧化应激下存活。包括胱氨酸/谷胱甘肽轴在内的关键调节途径,通过维持抗氧化防御和促氧化应激源之间的平衡,显著调节癌症干细胞对铁死亡的敏感性。针对癌症干细胞中的铁死亡提供了增强治疗效果和克服耐药性的有前景的治疗途径。诸如对SLC7A11转运蛋白进行药理学抑制等策略,可减少半胱氨酸可用性和谷胱甘肽水平,从而增强癌症干细胞中的铁死亡。此外,诱导铁代谢失调或脂质过氧化可选择性地损害癌症干细胞的存活。增加细胞内铁和活性氧水平的纳米颗粒药物递送系统,已被证明在靶向癌症干细胞方面有效,且对正常细胞影响最小。最终,全面了解铁死亡与癌症干细胞生物学之间的相互作用,对于制定旨在根除这些难以捉摸的细胞的创新策略至关重要,从而改善癌症治疗结果并降低复发率。
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