在低氧微环境下,HIF-1α是人类骨髓 stromal 细胞中 IL-8 表达的重要调节者
Qiqi Huang1, Ruolan You1, Maoqing Tan1
1Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China.
Protoplasma
|December 22, 2023
概括
血液性瘤中的缺氧增加了骨髓 stromal 细胞中通过缺氧诱导因子-1α (HIF-1α) 增加的介质素-8 (IL-8). HIF-1α直接调节IL-8的转录,影响患者的预后.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 血液学 血液学 血液学
背景情况:
- 人类骨髓 stromal 细胞 (BMSCs) 分泌的介质素-8 (IL-8) 与血液性瘤的预后不佳有关.
- 缺氧是血液瘤的常见特征,导致缺氧诱导因子-1α (HIF-1α) 稳定和瘤进展.
- 低毒性条件诱导BMSC中的IL-8的产生,但潜在的机制尚不清楚.
研究的目的:
- 阐明BMSCs中缺氧诱导的IL-8表达的机制.
- 研究HIF-1α在低氧条件下调节IL-8表达中的作用.
主要方法:
- 在低氧条件下培养BMSC线.
- 评估HIF-1α和IL-8的表达水平.
- 进行了HIF-1α敲击实验.
- 分析了IL-8促进剂活性和HIF-1α结合部位.
主要成果:
- 在低氧状态下,HIF-1α和IL-8在BMSC中表达高.
- 抑制HIF-1α显著抑制IL-8的表达和分泌.
- 证实HIF-1α通过结合其促进子区域 (-147至-140) 来对IL-8进行转录调节.
结论:
- 血液性瘤中IL-8的增加部分归因于缺氧微环境.
- 在BMSC中HIF-1α激活驱动IL-8诱导和转录调节.
- 这一途径代表了血液性瘤的潜在治疗标.
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