中国神经再生研究(英文版) ›› 2024, Vol. 19 ›› Issue (4): 781-787.doi: 10.4103/1673-5374.382229

• 综述:脑损伤修复保护与再生 • 上一篇    下一篇

琥珀酰化修饰:脑卒中的潜在治疗目标

  

  • 出版日期:2024-04-15 发布日期:2023-09-15

Succinylation modification: a potential therapeutic target in stroke

Jie Lian1, #, Wenwu Liu2, #, Qin Hu1, * , Xiaohua Zhang1, *   

  1. 1Department of Neurosurgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; 2Department of Diving and Hyperbaric Medicine, Naval Medical Center, Naval Medical University, Shanghai, China
  • Online:2024-04-15 Published:2023-09-15
  • Contact: Qin Hu, MD, PhD, huqinle20010709@126.com; Xiaohua Zhang, MD, PhD, zxh1969@aliyun.com.
  • Supported by:
    This work was supported by the National Natural Science Foundation of China, No. 82071283 (to QH) and the Natural Science Foundation of Shanghai, No. 22ZR1437700 (to QH).

摘要:

由血氧和葡萄糖供应受损引发的缺血性细胞死亡是脑卒中引发脑损伤的主要病理生理学之一。线粒体能量代谢受损在脑卒中后几分钟就能观察到,并与神经病理学的发展密切相关。最近,一种新型的翻译后修饰,即赖氨酸琥珀酰化,已被确认在缺血后线粒体能量代谢中发挥重要作用。然而,琥珀酰化修饰在脑卒中后细胞代谢中的调控作用还不是很清楚。琥珀酰化水平是由赖氨酸残基上的琥珀酰化基团的非酶性或酶性转移和去琥珀酰化酶催化的琥珀酰化的去除来动态调节。越来越多的证据表明,琥珀酰化可以通过调节代谢酶的活性或稳定性来调节代谢途径。去乙酰化酶,特别是去乙酰化酶5,因其去琥珀酰化活性而被认为是通过去琥珀酰化众多代谢酶来调节代谢的关键因素。琥珀酰化和去琥珀酰化之间的失衡参与脑卒中的病理生理学机制。此次综述总结了脑卒中后琥珀酰化对能量代谢、活性氧生成和神经炎症的影响,以及Sirtuin 5介导的去琥珀酸化,并强调了靶向琥珀酸化/去琥珀酸化可作为治疗脑卒中的一个有希望策略。

https://orcid.org/0000-0002-2270-8822 (Qin Hu); https://orcid.org/0000-0001-9679-2767 (Xiaohua Zhang)

Abstract: Stroke is a leading cause of mortality and disability worldwide. Ischemic cell death triggered by the compromised supply of blood oxygen and glucose is one of the major pathophysiology of stroke-induced brain injury. Impaired mitochondrial energy metabolism is observed minutes after stroke and is closely associated with the progression of neuropathology. Recently, a new type of post-translational modification, known as lysine succinylation, has been recognized to play a significant role in mitochondrial energy metabolism after ischemia. However, the role of succinylation modification in cell metabolism after stroke and its regulation are not well understood. We aimed to review the effects of succinylation on energy metabolism, reactive oxygen species generation, and neuroinflammation, as well as Sirtuin 5 mediated desuccinylation after stroke. We also highlight the potential of targeting succinylation/desuccinylation as a promising strategy for the treatment of stroke. The succinylation level is dynamically regulated by the nonenzymatic or enzymatic transfer of a succinyl group to a protein on lysine residues and the removal of succinyl catalyzed by desuccinylases. Mounting evidence has suggested that succinylation can regulate the metabolic pathway through modulating the activity or stability of metabolic enzymes. Sirtuins, especially Sirtuin 5, are characterized for their desuccinylation activity and have been recognized as a critical regulator of metabolism through desuccinylating numerous metabolic enzymes. Imbalance between succinylation and desuccinylation has been implicated in the pathophysiology of stroke. Pharmacological agents that enhance the activity of Sirtuin 5 have been employed to promote desuccinylation and improve mitochondrial metabolism, and neuroprotective effects of these agents have been observed in experimental stroke studies. However, their therapeutic efficacy in stroke patients should be validated.

Key words: mitochondria metabolism, neuroprotection, sirtuin 5, stroke, succinylation modification