Wei Xiaofan, Manandhar Laxman, Kim Hyunsoo, Chhetri Arun, Hwang Jaetaek, Jang Gyuho, Park Channy, Park Raekil
Department of Biomedical Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea.
Antioxidants (Basel). 2025 Jan 23;14(2):126. doi: 10.3390/antiox14020126.
Peroxisomes generate reactive oxygen species (ROS) and also play a role in protecting cells from the damaging effects of such radicals. Dysfunctional peroxisomes are recognized by receptors and degraded by a selective type of macroautophagy called pexophagy. Oxidative stress is one of the signals that activates pexophagy through multiple signaling pathways. Conversely, impaired pexophagy results in the accumulation of damaged peroxisomes, which in turn leads to elevated ROS levels and oxidative stress, resulting as cellular dysfunction and the progression of diseases such as neurodegeneration, cancer, and metabolic disorders. This review explores the molecular mechanisms driving pexophagy and its regulation by oxidative stress with a particular focus on ROS. This highlights the role of peroxisomal proteins and ROS-mediated signaling pathways in regulating pexophagy. In addition, emerging evidence suggests that the dysregulation of pexophagy is closely linked to neurological disorders, underscoring its potential as a therapeutic target. Understanding the intricate crosstalk between pexophagy and oxidative stress provides new insights into the maintenance of cellular homeostasis and offers promising directions for addressing neurological disorders that are tightly associated with pexophagy and oxidative stress.
过氧化物酶体产生活性氧(ROS),并且在保护细胞免受此类自由基的损伤作用方面也发挥作用。功能失调的过氧化物酶体可被受体识别,并通过一种称为过氧化物酶体自噬的选择性巨自噬方式进行降解。氧化应激是通过多种信号通路激活过氧化物酶体自噬的信号之一。相反,过氧化物酶体自噬受损会导致受损过氧化物酶体的积累,进而导致ROS水平升高和氧化应激,从而导致细胞功能障碍以及神经退行性变、癌症和代谢紊乱等疾病的进展。本综述探讨了驱动过氧化物酶体自噬的分子机制及其受氧化应激的调节,特别关注ROS。这突出了过氧化物酶体蛋白和ROS介导的信号通路在调节过氧化物酶体自噬中的作用。此外,新出现的证据表明,过氧化物酶体自噬的失调与神经疾病密切相关,凸显了其作为治疗靶点的潜力。了解过氧化物酶体自噬与氧化应激之间复杂的相互作用,为维持细胞稳态提供了新的见解,并为解决与过氧化物酶体自噬和氧化应激密切相关的神经疾病提供了有前景的方向。
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