TFEB调节细胞性铁,并以TfR1依赖的方式预防铁
Leilei Chen1, Yue Ma1, Xizhen Ma1
1Institute of Brain Science and Disease, Qingdao University, Qingdao, Shandong, China; Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Qingdao University, Qingdao, Shandong, China; Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Qingdao University, Qingdao, Shandong, China.
Free radical biology & medicine
|September 8, 2023
概括
转录因子EB (TFEB) 的过度表达清除了错误折叠的α-synuclein,并通过通过转激素受体1 (TfR1) 调节铁代谢来预防铁. 这为帕金森病 (PD) 提供了新的神经保护策略.
科学领域:
- 神经生物学 神经生物学 神经生物学
- 细胞生物学 细胞生物学
- 分子医学是分子医学.
背景情况:
- 自会清除错误折叠的α-synuclein,这是一个涉及帕金森病 (PD) 病原体的过程.
- 错误折叠的α-synuclein通过NCOA4-介导的费里丁降解促进铁化.
- 转录因子EB (TFEB) 调节自和溶酶体生物发生,但其在铁和铁代谢中的作用尚不清楚.
研究的目的:
- 阐明TFEB在调节自,铁和铁代谢中的作用,用于PD中的神经保护.
- 研究TFEB如何影响细胞铁水平和储存蛋白.
主要方法:
- 在细胞模型中过度表达TFEB.
- 评估α-synuclein清除,铁亡标志物和铁含量.
- 对转移素受体1 (TfR1) 表达和定位的分析.
- TfR1敲击实验以确认TFEB依赖的机制.
主要成果:
- 过度表达TFEB增强了α-synuclein清除,并防止了铁和铁过载.
- TFEB对TfR1进行了上调,以促进溶酶体铁的进口和储存.
- TFEB增加了费里水平,保持低性铁,并保持电活动.
- TFEB对铁代谢的调节和铁灭抑制依赖于TfR1.1.
结论:
- TFEB在调节细胞铁代谢和抑制铁亡方面发挥着至关重要的作用.
- 过度表达TFEB提供神经保护,防止铁和铁过载,可能通过TfR1.
- 这些发现为TFEB的功能提供了新的见解,并为PD提供了新的治疗途径.
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