过氧化素2减轻氧化应激诱导的上皮重塑在慢性鼻炎与鼻多
Ru Gao1, Yu Chen1, Honghui Liu1
1Department of Otolaryngology-Head and Neck Surgery, the Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China.
American journal of rhinology & allergy
|October 17, 2025
概括
过氧化素2 (PRDX2) 在具有鼻息肉的慢性鼻炎 (CRSwNP) 中降低调节,加剧氧化应激和上皮重塑. 恢复PRDX2水平可以通过抑制TGF-β1/Smad通路来减轻疾病的进展.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 带鼻息肉的慢性鼻炎 (CRSwNP) 是一种复杂的炎症状况,标志着鼻上皮质显著重塑.
- 氧化应激和蛋白质表达的改变与CRSwNP的发病有关,但特定的分子机制仍然不完全理解.
研究的目的:
- 为了研究二氧化素2 (PRDX2) 在CRSwNP.的病变发生过程中的作用.
- 阐明PRDX2影响鼻上皮质重塑和疾病进展的机制.
主要方法:
- 从CRSwNP患者和健康对照对鼻腔组织的蛋白质组学分析.
- 使用免疫光 (IF) 和逆转录量化聚合酶链反应 (RT-PCR) 验证差异表达基因 (DEG).
- 使用鼻上皮细胞 (NEC) 进行体外研究,以评估PRDX2对活性氧物种 (ROS) 和上皮-介质细胞过渡 (EMT) 的影响,以及其对TGF-β1/SMAD信号通路的影响.
主要成果:
- 蛋白质组学在CRSwNP组织中发现了一个独特的蛋白质表达特征,与氧化应激相关.
- 在CRSwNP鼻上皮质中观察到高ROS水平,发现PRDX2显著下调.
- 在NEC中过度表达PRDX2减轻了H2O2诱导的ROS产生,EMT,并抑制了TGF-β1 / SMAD信号通路的激活.
结论:
- 累积的ROS在CRSwNP的发病过程中起着至关重要的作用.
- 在CRSwNP中,PRDX2作为ROS诱导的上皮质重塑的关键调节者.
- 调节PRDX2活性,特别是通过恢复其水平,通过向TGF-β1/Smad通路,为CRSwNP提供了潜在的治疗策略.
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