过度负担的铁性压力会损害牙形态发生
Haisheng Wang1, Xiaofeng Wang1,2, Liuyan Huang1,2
1State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
eLife
|November 22, 2023
概括
铁灭,细胞死亡途径,在牙发育中起作用. 虽然ferroptotic压力增加,酶Gpx4平衡它,防止发育缺陷,除非压力过大.
科学领域:
- 细胞生物学 细胞生物学
- 发展生物学 发展生物学
- 生物化学 生物化学
背景情况:
- 调节的细胞死亡,特别是非亡的形式,如铁亡,在器官发育中至关重要.
- 铁质,以依赖铁的脂质过氧化为特征,由铁质压力和抗脂质过氧化系统之间的平衡来调节.
- 脂质和铁代谢,是铁亡的核心,也对器官生成至关重要.
研究的目的:
- 通过使用ex vivo牙胚芽培养模型,研究铁灭菌在器官生成中的作用和影响.
- 检查牙发育过程中铁性应激的存在和影响.
主要方法:
- 使用了一种ex vivo牙胚芽培养模型.
- 在牙发育过程中评估铁性应激水平和谷氨过氧化酶4 (Gpx4) 的表达.
- 使用埃拉斯来观察对牙形态发生的影响,抑制了铁亡.
主要成果:
- 在牙发育过程中,ferroptotic应激和Gpx4表达同时增加.
- 抑制铁亡部分挽救了牙形态发生中的埃拉斯诱导的缺陷.
- 过度的ferroptotic压力,由erastin诱导,显著抑制了牙形态发生.
结论:
- 在牙器官生成过程中存在铁性压力,但通过增加Gpx4表达来有效管理.
- 虽然受控的铁亡可能是发育的组成部分,但过度的铁亡应激会损害牙形态发生.
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