在状细胞炎症中,中酶体 stromal 细胞衍生的细胞外囊泡的免疫调节潜力
Robert Ossendorff1, Sibylle Grad2, Tobias Tertel3
1Department of Orthopedics and Trauma Surgery, University Hospital Bonn, Bonn, Germany.
Frontiers in immunology
|August 11, 2023
概括
介酶干细胞/介酶干细胞细胞外囊泡 (MSC-EVs) 通过促进体生成,显示出对骨关节炎 (OA) 治疗的潜力. 然而,特定的MSC-EV批量也可以刺激炎症,强调需要解决功能异质性以有效治疗OA.
科学领域:
- 生物医学工程 生物医学工程
- 再生医学是一种再生医学.
- 细胞生物学 细胞生物学
背景情况:
- 骨关节炎 (OA) 是一种普遍存在的退行性关节疾病,其疾病修饰治疗方法有限.
- 介质细胞干细胞/干细胞细胞外囊泡 (MSC-EVs) 正在研究其恢复关节平衡的潜力.
- 目前的OA疗法主要提供症状缓解,而不解决潜在的疾病进展.
研究的目的:
- 为了评估特征性MSC-EVs对3D冠状细胞炎症模型中的冠状体生成的影响.
- 研究MSC-EVs在促炎条件下对状细胞的合成和代谢基因表达和基因基因生产的影响.
- 评估MSC-EVs作为骨关节炎疾病修饰疗法的潜力.
主要方法:
- 牛关节软细胞在3D颗粒中培养,并暴露在TNFα,特定的MSC-EV制剂或组合中.
- 测量DNA,糖氨酸糖甘 (GAG),原蛋白,IL-6和NO水平的量化.
- 分析基因表达的合成,代谢,脱差,增大和炎症标志物的基因表达.
- 组织学和免疫组织化学评估 (萨夫拉宁O/快速绿色,COL I,COL II).
主要成果:
- TNFα诱导了冠状细胞的亲催化状态,增加了NO和IL-6,升调了催化基因,并降低了催化标志物.
- 补充MSC-EV通常会增强GAG保留,并上调原体标志物PRG-4.
- 一个MSC-EV批量 (41.5-EVi1) 增加了炎症 (IL-8) 和代谢标志物,而另一个 (84-EVi) 显示出更高的冠状动能.
- 组织学分析证实了84-EVi制剂的优越的原效应.
结论:
- 在炎症性环境中,MSC-EVs可以调节状细胞的行为,促进基质生产,但也可能诱导炎症.
- 在MSC-EV制剂中存在功能异质性,有些药物表现出有益的冠状体效应,而其他药物则促进炎症.
- 需要进一步的研究来规范MSC-EV的生产和选择,以利用它们的治疗潜力来治疗OA.
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