时间限制的养可以通过抑制NOX-4/ROS/p38 MAPK通路来防止电离辐射诱导的造血干细胞损伤
Qidong Huo1, Tongpeng Yue1, Wenxuan Li1
1Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, China.
International immunopharmacology
|February 24, 2024
概括
时间限制性养 (TRF) 保护造血系统免受辐射损伤. 这项研究表明,TRF增强干细胞功能,减少全身辐射 (TBI) 后的氧化应激.
科学领域:
- 辐射生物学 辐射生物学
- 血液学 血液学 血液学
- 代谢研究的研究.
背景情况:
- 电离辐射 (IR) 暴露,特别是全身辐射 (TBI),会对造血系统造成重大损害.
- 缓解辐射诱导的造血损伤对于管理辐射暴露至关重要.
- 限时养 (TRF) 已被认为具有各种条件的潜在健康益处.
研究的目的:
- 调查时间限制养 (TRF) 对全身辐射 (TBI) 诱导的造血损伤的保护作用.
- 阐明基底的分子机制,其中TRF减轻辐射损伤在造血系统.
主要方法:
- 小鼠接受了4Gy的全身辐射 (TBI).
- 时间限制养 (TRF) 是作为一种潜在的保护策略而实施的.
- 评估了造血干细胞的比例和功能.
- 分析了分子通路,包括NOX-4/ROS/p38 MAPK,核因子红色素2相关因子2,谷氨过氧化酶和乳腺素的哺乳动物点.
主要成果:
- 在TBI后,TRF显著增加了造血干细胞的比例并改善了其功能.
- 在造血干细胞中,TRF抑制了NOX-4/ROS/p38 MAPK通路.
- TRF调节了核因子红素2相关因子2的表达,并增强了谷氨过氧酶活性,减少了活性氧物种 (ROS).
- 通过抑制哺乳动物目标的拉巴胺素 (mTOR) 途径,TRF减轻了血代谢异常.
结论:
- 限时养 (TRF) 显示出对TBI诱导的造血损伤有显著的保护作用.
- 通过TRF介导的保护包括抑制NOX-4/ROS/p38 MAPK通路和增强抗氧化能力.
- 通过调节mTOR通路,TRF还对血代谢产生积极影响,这表明它有可能成为治疗辐射损伤的新治疗策略.
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