阿伦德罗纳酸改变了EVs通过原始264.7骨质细胞的释放
Lorraine Perciliano de Faria1, Victor E Arana-Chavez1, Lexie Shannon Holliday2
1Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil.
概括
阿伦德罗纳酸 (ALN) 影响骨细胞体中细胞外囊泡 (EV) 的释放. 高ALN度降低了总EVs,有利于较小的囊泡,影响了直接再吸收抑制之外的骨重塑.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 骨生物学 骨生物学 骨生物学
背景情况:
- 氨酸 (ALN) 是一种含有的双酸盐,通过抑制骨质细胞活性,对治疗骨疾病至关重要.
- 对于ALN对骨质细胞细胞外囊泡 (EV) 释放的影响尚不完全理解.
研究的目的:
- 研究ALN对骨质细胞释放的EV数量和尺寸分布的影响.
- 探索不同的ALN度如何影响EV配置文件和骨质细胞功能.
主要方法:
- 骨干细胞从Raw 264.7细胞中使用RANK-ligand进行分化,并在具有不同ALN度 (10-μM, 100-μM) 或载体的骨片上培养.
- 从条件介质中分离出EV,分析包括酸耐酸酸酶 (TRAP) 染色,actin环的法洛伊丁染色和纳米粒子跟踪分析 (NTA).
主要成果:
- 高ALN度 (100-μM) 显著降低了TRAP阳性多核细胞和活性环形成,证实了骨质细胞形成和活性受损.
- 在100μM ALN组中,NTA显示了较低的总EV度,较小的EV (<100 nm) 显著增加,这是外体的特征.
结论:
- 阿伦德罗纳酸会改变骨质细胞衍生的EV的释放特征,特别是在更高度下.
- 这些EV数量和大小的变化可能会影响细胞间通信和骨重塑过程,超出ALN直接抑制骨再吸收的范围.
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