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矩阵力学通过JAK1/STAT3信号通路调节骨髓衍生的中性粒细胞的极化状态
Ting Jiang1, Xin-Yue Tang1, Yi Mao2
1Department of Orthodontics, Shanghai Ninth People's Hospital, Shanghai Key Laboratory of Stomatology, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai 200011, PR China; Oral Bioengineering Lab, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, PR China.
更硬的矩阵促进中性粒细胞 (Neus) 采用抗炎 (N2) 现型,增强血管发芽. 这种转变是由JAK1/STAT3途径调解的,为组织工程提供了洞察力.
科学领域:
- 生物材料科学 生物材料科学
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 基质刚度是一个关键的机械暗示,通过机械传导调节细胞行为.
- 中性粒细胞 (Neus) 对于炎症和再生至关重要,但它们对矩阵刚性的反应尚不清楚.
- 了解Neus对性的反应对于开发有效的工程组织模拟器至关重要.
研究的目的:
- 调查基质刚度对中性粒细胞 (Neu) 表型和功能的影响.
- 探索潜在的分子机制,特别是JAK1/STAT3通路,涉及度介导的Neu调制.
- 评估调节硬度的Neus在促进血管化的潜力.
主要方法:
- 开发一个具有不同硬度 (1.5,2.6和5.7kPa) 的3D水凝培养系统.
- 评估Neu活力,表型 (N1与N2),反应性氧物种 (ROS) 生产和细胞因子分泌.
- 使用大动脉环测定对血管发芽的评估.
- RNA测序以确定分子通路,包括受基质刚度影响的JAK1/STAT3信号.
主要成果:
- 中性粒细胞 (Neus) 在3D培养系统中表现出更好的完整性和活力.
- 较硬的矩阵诱导了抗炎性 (N2) Neu 现型,其特征是粘附分子表达减少,ROS 生产降低,抗炎性细胞因子分泌增加.
- 在更硬的矩阵上培养的中性粒细胞在大动脉环测定中显著增强了血管发芽.
- RNA测序显示,更硬的矩阵激活了Neus中的JAK1/STAT3通路,而JAK1抑制减少了N2标记物CD182.2.的表达.
结论:
- 矩阵刚度是一个关键因素,可以引导中性粒细胞 (Neu) 表型向抗炎 (N2) 状态.
- JAK1/STAT3信号通路调解了Neu表型中观察到的依赖于硬度的转变.
- 这些发现为设计利用矩阵力学调节免疫反应和促进再生的工程组织提供了基础,可能有利于治疗缺血性疾病和骨缺陷.
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