鉴定骨髓衍生抑制细胞和利波卡林-2作为脊椎间盘退化治疗点
Changmeng Zhang1, Haoyun Li2, Hongfei Wang1
1Department of Orthopaedics and Traumatology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|June 26, 2025
概括
早期的椎间盘退化 (IVDD) 涉及到表达LCN2的保护性骨髓衍生抑制细胞 (MDSCs). 先进的IVDD显示炎症巨细胞增加,LCN2可能作为IVDD的治疗剂.
科学领域:
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
- 整形外科 整形外科 整形外科
背景情况:
- 炎症和免疫细胞透是椎间盘退化 (IVDD) 的关键特征.
- 之前对IVDD的单细胞RNA测序 (scRNA-seq) 研究集中在细胞核中,忽视了免疫细胞动态.
- 整合全基因组关联研究 (GWAS) 与scRNA-seq (scDRS) 提供了一种新的方法来识别IVDD中与疾病相关的细胞亚群.
研究的目的:
- 在椎间盘退化 (IVDD) 期间调查特定阶段的免疫细胞变化.
- 应用单细胞疾病相关性评分 (scDRS) 来识别IVDD中的GWAS风险丰富的免疫亚群.
- 阐明LCN2表达的骨髓衍生抑制细胞 (MDSCs) 在IVDD病变发生中的功能作用,并探索LCN2作为治疗点.
主要方法:
- 使用scRNA-seq对IVDD进行特定阶段的转录组分析,与Pfirrmann分级相关联.
- 应用scDRS将GWAS数据与免疫细胞亚群的scRNA-seq发现整合起来.
- 使用LCN2淘汰赛小鼠和体外巨细胞极化试验进行功能验证.
主要成果:
- 观察到免疫细胞种群的转变,从早期IVDD中的高LCN2MDSC到晚期IL1B+巨细胞.
- scDRS将IL1B+ M1类巨细胞确定为GWAS风险丰富亚种群.
- 高LCN2的MDSC通过ANXA1表现出免疫调节作用,抑制炎症;LCN2在体外促进了修复性巨细胞表型.
结论:
- 高LCN2的MDSCs代表了早期IVDD中的免疫保护子群.
- IL1B+巨细胞与先进的IVDD和GWAS风险位置有关.
- 通过调节巨细胞极化和抑制炎症,LCN2对IVDD具有治疗潜力.
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