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YKL-40 Knockdown 降低了卵巢粒状细胞中的氧化应激损伤
Tingting Tang1, Jinyu Gao1, Xiangyang Pan1
1Reproductive Medicine Center, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China.
Genetic testing and molecular biomarkers
|April 18, 2024
概括
在多囊性卵巢综合征 (PCOS) 卵泡液和卵巢中YKL-40的升高表明在氧化应激中发挥了作用. 在卵巢颗粒细胞中减少YKL-40可以减轻氧化损伤和炎症.
科学领域:
- 生殖内分泌学 生殖内分泌学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 氧化应激是多囊性卵巢综合征 (PCOS) 发病的一个关键因素.
- YKL-40,一种类似于基因酶的蛋白质,在PCOS中升高,但其在卵巢氧化应激中的特定作用尚不清楚.
- 了解YKL-40的功能对于开发用于PCOS的新型抗氧化疗法至关重要.
研究的目的:
- 在PCOS的背景下,调查YKL-40在氧化应激中的作用.
- 为了确定YKL-40在氧化应激下对卵巢颗粒细胞 (OGCs) 的 Knockdown 作用.
- 探索YKL-40对细胞功能和参与PCOS病理生理学的信号通路的影响.
主要方法:
- 用ELISA测量了PCOS和对照女性的卵泡液中的YKL-40水平.
- 通过免疫组织化学评估卵巢YKL-40表达在莱特醇诱导的PCOS大鼠模型中.
- 利用过氧化 (H2O2) 诱导KGN细胞 (OGCs) 的氧化应激,并使用siRNA进行YKL-40敲击,随后进行各种测试以评估细胞反应和信号通路 (PI3K/AKT/NF-κB).
主要成果:
- 与对照人群相比,PCOS患者的卵泡液和PCOS大鼠的卵巢组织中的YKL-40水平显著更高.
- H2O2治疗增加了OGC中的YKL-40表达.
- 在经过H2O2处理的OGC中,YKL-40 Knockdown改善了细胞增殖,增强了抗氧化酶活性 (T-SOD,GSH-Px,CAT),降低了MDA和炎症标志物 (IL-1β,IL-6,IL-8,TNF-α),减少了细胞亡,并激活了PI3K/AKT通路,同时抑制了NF-κB激活.
结论:
- 在PCOS中,YKL-40是上调调节的,其表达是由氧化应激引起的.
- 击败YKL-40保护卵巢颗粒细胞免受氧化应激诱导的损伤.
- YKL-40在PCOS病理生理学中起着重要作用,可能通过调节PI3K/AKT/NF-κB信号通路.
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