Txnip表达促进JNK介导的神经元死亡,以应对活性氧物种
Brenda García-Hernández1, Julio Morán1
1División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico.
Frontiers in molecular neuroscience
|August 7, 2023
概括
活性氧物种 (ROS) 通过FOXO3激活增加TXNIP表达,促进神经元死亡. 降低TXNIP的调节减少了这种细胞死亡,突出了TXNIP作为神经退行性疾病的治疗点.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- TXNIP (铁素相互作用蛋白) 涉及到各种疾病,包括神经退行.
- 氧化应激和活性氧物种 (ROS) 在神经元亡中起着至关重要的作用.
- 由于TXNIP参与疾病进展,因此被提议作为治疗点.
研究的目的:
- 阐明调节神经元死亡期间Txnip表达的分子机制.
- 调查TXNIP在小脑颗粒神经元中亡的进展中的作用.
- 探索针对神经退行性疾病中TXNIP的治疗潜力.
主要方法:
- 脑小粒神经元和神经母细胞瘤细胞系的初级培养.
- 使用稳素和低条件诱导亡.
- 测量ROS产量,Txnip mRNA水平和蛋白质表达.
- 染色体免疫沉 (ChIP) 来评估转录因子的结合.
- 核转位测定FOXO3核转位测定.
- RNA干扰 (shRNA) 来降低Txnip表达的调节.
主要成果:
- 稳素和低治疗增加了神经元中的ROS产量和Txnip mRNA水平.
- 发现FOXO3转录因子与Txnip促进体相互作用并转移到核中.
- 使用shRNA降低TXNIP的调节显著降低了由稳氨酸诱导的神经元死亡.
- ROS通过FOXO3激活促进Txnip表达,由Akt抑制介导.
结论:
- 在神经元亡过程中,TXNIP表达通过FOXO3激活通过ROS进行上调.
- 在神经元细胞死亡的进展中,TXNIP起着至关重要的作用.
- 针对TXNIP可能为涉及氧化应激的神经退行性疾病提供治疗策略.
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