内皮特异性CXCL12在组织修复和瘤进展期间调节新血管化
Andrew C Hostler1, William W Hahn1, Michael S Hu2
1Department of Surgery, The University of Arizona College of Medicine, Tucson, Arizona, USA.
概括
内皮C-X-C动机化学因子连接体12 (CXCL12) 对于组织修复和瘤生长至关重要. 它的特定删除会影响新血管和细胞通信,突出其在愈合和癌症进展中的作用.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 在瘤学瘤学.
背景情况:
- C-X-C 基因化基因连接体12 (CXCL12),也称为干细胞衍生因子1 (SDF-1),参与胚胎发生,造血,瘤病理生理学和新血管化.
- 精确的细胞特异性功能和机制CXCL12,特别是在新血管和组织修复,仍然不完全理解.
- 以前的研究表明,缺氧诱导因子 (HIF) -1 影响CXCL12表达,以应对缺血性损伤.
研究的目的:
- 研究CXCL12在新血管化,组织修复和瘤进展中的细胞特异性作用.
- 阐明内皮特异性CXCL12影响细胞交叉声和循环细胞招募的机制.
- 确定内皮特异性CXCL12缺失对胚胎发生,形态发生和缺血组织存活的影响.
主要方法:
- 使用了有条件的CXCL12淘汰赛小鼠模型,具有内皮特异性删除 (eKO).
- 采用了小鼠的准生物和先进的转录基因技术.
- 分析了组织生存,修复,瘤进展,胚胎发生和形态发生.
主要成果:
- 细胞内皮特异性删除CXCL12 (eKO) 调节缺血组织存活率和改变的组织修复和瘤进展.
- 内皮细胞CXCL12的损失破坏了内皮细胞和纤维细胞之间必要的交叉,这对于肌体生长和血管化是必不可少的.
- 内皮特异性CXCL12信号导致了新血管化中涉及的循环细胞的招募,正如转录组分析所确定的那样.
结论:
- 内皮特异性CXCL12在神经血管对组织损伤和瘤进展的反应中发挥着关键作用.
- 内皮细胞CXCL12对于维持内皮细胞-纤维细胞通信和促进血管化至关重要.
- 向内皮细胞CXCL12可能为调节疾病背景下的新血管化提供治疗潜力.
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