布莱米辛诱导的肺纤维化和功能障碍是由G6PD缺乏症加剧的
Christina Signoretti1, Samuel Fatehi1, Rhonda Drewes2
1Department of Pharmacology, New York Medical College, Valhalla NY, USA.
American journal of physiology. Lung cellular and molecular physiology
|December 16, 2025
概括
葡萄糖-6-酸盐脱酶 (G6PD) 的遗传变异在老鼠中加剧了肺纤维化,增加了原和氧化应激. 这突显了纤维化发展中的代谢途径失调.
科学领域:
- 肺部医学 肺部医学
- 代谢研究研究 代谢研究
- 遗传学 是一个遗传学.
背景情况:
- 肺纤维化 (PF) 是一种具有高死亡率的衰弱性肺部疾病.
- 氧化应激和代谢变化与PF有关,但葡萄糖代谢在细胞外基质 (ECM) 合成中的作用尚不清楚.
- 了解这些途径对于开发有针对性的疗法至关重要.
研究的目的:
- 为了研究改变的代谢途径,有助于白胺硫酸盐 (BLM) 诱导的肺纤维化.
- 为了确定一种葡萄糖-6-酸脱酶 (G6PD) 变体 (S188F) 对大鼠BLM诱导的PF的影响.
主要方法:
- 在G6PD变种 (G6PDS188F) 和野生型 (WT) 鼠中使用 nebulized bleomycin sulfate (BLM) 诱导肺纤维化.
- 组织学分析 (马森三色,阿什克罗夫特评分) 和对原沉积的氧量化.
- 基于质谱的蛋白质组学,空间蛋白质组学和代谢组学,以识别蛋白质和代谢物变化.
主要成果:
- 与WT大鼠相比,BLM在G6PDS188F大鼠中诱导了更大的肺组织体积和原沉积.
- 蛋白质组学证实G6PDS188F + BLM肺中的亲纤维蛋白 (例如,原1a1) 的表达增加.
- 在G6PDS188F大鼠中,BLM增加了KEAP1,降低了NRF2活性,增加了氧化谷氨和下调的精子.
结论:
- 在老鼠中,G6PDS188F变种加剧了BLM诱导的肺纤维化.
- 在这个模型中,失调的聚胺代谢和抗氧化状态 (氧化应激) 有助于增加ECM合成.
- 研究结果表明,G6PD变异可能会影响PF易感性和进展.
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