STING-OLA1-Keap1-Nrf2轴调节过早卵巢衰竭中的铁亡
Nie Zhang1, Jiaoyu Li2, Ruixin Zhang3
1Department of Obstetrics and Gynecology, NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, 230022, Anhui, China; Department of Oncology, Fuyang Hospital of Anhui Medical University, Fuyang, 236000, China; Engineering Research Center of Biopreservation and Artificial Organs, Ministry of Education, No 218 Jixi Road, Hefei, 230022, Anhui, China.
干扰素基因 (STING) 途径的循环GMP-AMP合成酶 (cGAS) 刺激器驱动铁亡,导致早产卵巢衰竭 (POF) 中的粒状细胞损失. 抑制STING或使用Icariin (ICA) 可以保护卵巢储备.
科学领域:
- 生殖生物学 生殖生物学
- 细胞机制 细胞机制
- 免疫学 免疫学 免疫学
背景情况:
- 过早卵巢衰竭 (POF) 会导致不孕不育和长期健康风险.
- 颗粒状细胞损失是POF的一个关键特征.
- 导致POF中颗粒状细胞丧失的潜在细胞机制尚不完全理解.
研究的目的:
- 阐明在早产卵巢衰竭 (POF) 中颗粒状细胞损失的机制.
- 确定治疗目标,以保持POF的卵巢储备.
主要方法:
- 使用细胞和小鼠模型研究了POF中cGAS-STING通路的作用.
- 利用基因淘汰,药物抑制和分子相互作用研究.
- 评估了天然黄类物质伊卡林 (ICA) 的治疗潜力.
主要成果:
- 通过OLA1-Keap1轴抑制Nrf2抗氧化剂信号传递,cGAS-STING通路的激活驱动POF中的铁和颗粒细胞损失.
- 在POF模型中,抑制STING或Icariin (ICA) 治疗恢复了Nrf2活性,减少了ferroptosis,并保持了卵巢完整性.
- 伊卡林 (ICA) 直接与STING结合,破坏STING-OLA1相互作用并恢复Nrf2信号传递.
结论:
- STING-OLA1-Keap1-Nrf2信号轴是过早卵巢衰竭 (POF) 中铁亡的关键驱动因素.
- 使用像Icariin (ICA) 这样的药物准STING途径显示了在POF中保持卵巢储备的治疗潜力.
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