通过向BRD4调节的突性巨细胞极化,灵感来自断体的纳米疗法有效地减轻了骨关节炎
Yi-Di Xu1, Xiang-Chao Liang2, Zhi-Peng Li1
1Department of Bone and Joint Surgery, The First Affiliated Hospital of Jinan University, Key Laboratory of Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, Guangdong 510630, China.
Biomaterials
|February 8, 2024
概括
用JQ1载荷纳米脂质体 (JQ1@PSLs) 向代蛋白-4 (BRD4) 减少M1巨细胞偏振和关节炎症的关节炎症. 这种新疗法有效地向巨细胞,为骨关节炎治疗提供了一种有前途的方法.
科学领域:
- 免疫学 免疫学 免疫学
- 纳米医学是一种纳米医学.
- 骨关节炎研究 骨关节炎研究
背景情况:
- 含甲基蛋白4 (BRD4) 对于天生的免疫力至关重要,但它在突巨细胞和关节炎症中的作用尚未得到充分研究.
- 以前的研究表明,BRD4抑制诱导瘤相关巨细胞的亡.
研究的目的:
- 为了研究BRD4在骨关节炎 (OA) 期间的突巨细胞中的作用.
- 开发和评估BRD4抑制纳米脂质体 (JQ1@PSLs) 用于针对性OA治疗.
主要方法:
- 在人类和小鼠OA同胞体中评估BRD4表达.
- 使用了特定于骨髓细胞的BRD4条件淘汰小鼠 (Lyz2-cre; BRD4flox/flox).
- 构建和表征含有JQ1 (JQ1@PSLs) 的含有酸的纳米脂质体 (PSLs).
- 评估了JQ1@PSLs被巨细胞和纤维细胞样同胞细胞 (FLSs) 在体外和体内吸收.
- 在OA小鼠模型中通过关节内注射给药JQ1@PSLs.
主要成果:
- 在OA synovium中的M1巨细胞中,BRD4的表达很高.
- 在OA模型中,BRD4的条件淘汰减少了M1巨细胞积累和突炎症.
- JQ1@PSLs证明了巨细胞的优先吸收.
- 关节内JQ1@PSLs减少了M1极化,突炎症,关节疼痛和软骨退化.
- JQ1@PSLs通过向巨细胞中的BRD4来抑制TRPA1的表达.
结论:
- 在OA中,BRD4是M1巨细胞积累和结膜炎症的关键调解者.
- JQ1@PSLs有效向和调节炎性巨细胞,为OA提供了一种新的治疗策略.
- 这种基于纳米脂质体的方法作为针对性OA治疗的"特洛伊木马".
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