百氧化素V 保护抗UVB诱导的角质细胞损伤
Sin Ri Kim1, Ji Won Park2, Byung-Hoon Lee2
1Graduate School of Pharmaceutical Sciences, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea.
Antioxidants (Basel, Switzerland)
|July 29, 2023
概括
百氧化素V保护皮肤细胞免受UVB损伤,通过去除活性氧物种,防止线粒体功能障碍和亡. 增强百氧化素V可能有助于预防阳光引起的皮肤损伤.
科学领域:
- 细胞生物学 细胞生物学
- 皮肤病学 皮肤病学
- 生物化学 生物化学
背景情况:
- 紫外线B (UVB) 辐射诱导皮肤角质细胞中的活性氧物种 (ROS).
- 线粒体和NADPH氧化酶是UVB暴露皮肤中ROS的主要来源.
- 氧化V (PrxV) 是一种能中和过氧化 (H2O2) 的酶.
研究的目的:
- 研究Peroxiredoxin V (PrxV) 在表皮角质细胞中对UVB诱导的ROS损伤的保护作用.
- 为了确定PrxV在UVB暴露后如何影响线粒体和细胞质H2O2水平.
- 阐明PrxV在预防UVB诱导的皮肤细胞损伤方面的机制.
主要方法:
- 使用光指示器测量线粒体和细胞质H2O水平.
- 使用PrxV-knockdown HaCaT的人类角质细胞来评估PrxV耗尽的影响.
- 评估线粒体功能,亡标志物和其他相关的细胞过程.
主要成果:
- 紫外线辐射的PrxV-knockdown角质细胞呈现出高的线粒体和细胞质H2O2.
- PrxV的耗尽导致其他过氧素 (PrxIII,PrxI,PrxII) 的失活,并增加了氧化应激.
- 缺乏PrxV的细胞显示出显著的线粒体功能障碍和对亡的敏感性增加.
结论:
- PrxV通过直接降低H2O2,并间接维持其他过氧化的活性来保护表皮皮质角质细胞免受UVB损伤.
- PrxV在预防UVB诱导的线粒体功能障碍和皮肤细胞中亡方面发挥着至关重要的作用.
- 增加PrxV活性可能是减轻UVB诱导皮肤损伤的潜在策略.
关键词:
灭症 (apoptosis) 是一种死亡的过程.角质细胞 (keratinocytes) 是一种细胞.线粒体功能障碍 线粒体功能障碍过氧化素 V 过氧化素有活性氧物种的反应性氧物种.紫外线B型辐射的辐射.更多相关视频
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