香烟烟雾提取物对KGN细胞中的血管生成和芳香酶活性的影响
Akemi Nishigaki1, Naoko Kida2, Hiroaki Tsubokura1
1Department of Obstetrics and Gynecology, Kansai Medical University, 2-5-1 Shinmachi-cho, Hirakata, Osaka, 573-1010, Japan.
Scientific reports
|April 22, 2025
概括
香烟烟雾提取物通过破坏血管新生和芳香酶活动来损害人类颗粒细胞的成熟. 这会对生殖结果和体外受精成功产生负面影响.
科学领域:
- 生殖生物学 生殖生物学
- 细胞和分子生物学是细胞和分子生物学.
- 内分泌学 在内分泌学.
背景情况:
- 吸烟与不良生殖结果和减少体外受精 (IVF) 成功有关.
- 人类颗粒细胞对卵巢功能至关重要,调节类固醇生成和卵细胞成熟.
- 香烟烟雾影响颗粒细胞功能的分子机制尚不完全理解.
研究的目的:
- 为了研究香烟烟雾提取物 (CSE) 对人体颗粒细胞 (KGN细胞系) 血管生成和芳香酶活性的影响.
- 阐明缺氧诱导因子-1α (HIF-1α) 在调解CSE对粒状细胞的影响中的作用.
主要方法:
- 人类颗粒状类似瘤细胞 (KGN) 用不同度的CSE和福斯科林进行治疗.
- 基因和蛋白质表达 (VEGF,NDRG1,HIF-1α) 通过RT-PCR,西式涂抹和ELISA进行了量化.
- 细胞被HIF-1αsiRNA转染,以评估其在CSE诱导的变化中的作用.
- 分析了与类固醇生成有关的激素水平 (孕,雌激素,) 和基因表达.
主要成果:
- 暴露于CSE显著增加了血管内皮生长因子 (VEGF),N-myc下游调节基因1 (NDRG1) 和HIF-1α的表达.
- HIF-1α siRNA 转染减弱了 CSE 诱导的 VEGF 和 NDRG1 的过度表达.
- CSE降低了孕激素和雌激素水平,同时增加了丸激素水平.
- CSE改变了类固醇生成基因表达,降低了抗穆勒尔激素 (AMH) 和AMH受体II水平,并使SMAD信号通路变得不敏感.
结论:
- 香烟烟雾提取物对人体颗粒细胞成熟产生不利影响.
- CSE破坏关键的细胞过程,包括血管生成和芳香酶活性,部分由HIF-1α.中介.
- 这些分子干扰有助于与吸烟相关的负面生殖结果.
更多相关视频
08:40Optimization of the Wound Scratch Assay to Detect Changes in Murine Mesenchymal Stromal Cell Migration After Damage by Soluble Cigarette Smoke Extract
Published on: December 3, 2015
16.9K
09:07Author Spotlight: Development and Characterization of an In Vitro Model to Study Chronic Cigarette Smoke Exposure and Its Impact on Airway Epithelial Cells in COPD Research
Published on: July 12, 2024
886
相关概念视频
Regulation of Angiogenesis and Blood Supply
2.5K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.5K
Mechanism of Angiogenesis
5.0K
Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...
5.0K
