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Porphyromonas gingivalis 囊泡控制骨质细胞 - 巨血统命运

Elizabeth Leon¹, Shin Nakamura^1,2, Satoru Shindo¹

¹Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL 33314, USA.

International journal of molecular sciences

|January 28, 2026

概括

Porphyromonas gingivalis 外膜囊泡 (OMVs) 影响骨质细胞和巨细胞的分化. 早期的OMV抑制骨质细胞形成并促进M1巨细胞,而晚些时候的暴露会增强骨质细胞.

科学领域:

口腔微生物学口腔微生物学
免疫学免疫学免疫学
细胞生物学细胞生物学

背景情况:

Porphyromonas gingivalis (Pg) 是慢性牙周炎的一个关键病原体.
Pg释放的外膜囊泡 (OMVs) 传播毒性因素.
Pg-OMVs对单细胞-巨细胞/骨质细胞分化的影响尚不清楚.

研究的目的:

研究Pg-OMVs对骨质细胞 (OC) 和巨细胞 (MΦ) 与RAW264.7细胞分化的影响.
为了确定Pg-OMV暴露的时间是否影响差异化结果.
探索OC-STAMP在Pg-OMV介导作用中的作用.

主要方法:

从Pg W83.3中分离出来的OMV.
用OMV和RANKL对待RAW264.7细胞,使用三个不同的表格.
评估了骨质细胞形成,M1巨分化和关键标记物的表达 (dc-stamp,oc-stamp,nfatc1,acp5).
使用一种针对OC-STAMP的单克隆抗体来阻止其功能.

主要成果:

同时暴露于Pg-OMV和RANKL抑制了骨质细胞形成,并促进了M1极化.
延迟的Pg-OMV暴露增强了骨质细胞形成,并减少了M1极化.
在延迟暴露组中,OC-STAMP抗体部分逆转了增强的骨质细胞形成.
Pg-OMV细胞水平与骨质细胞形成相反相关.

结论:

Pg-OMV对OC/MΦ血统分化表现出特定阶段的影响.
早期Pg-OMV暴露会抑制骨质细胞的形成,并有利于M1巨细胞.
后来的Pg-OMV暴露促进了骨质细胞的形成,而没有M1极化.
Pg-OMVs可能会显著影响牙周病变的进展和组织损伤.

关键词:

在OC/MΦ单位.它们是 Porphyromonas gingivalis.巨细胞的两极分化骨质细胞生成 (osteoclastogenesis) 是一个过程.外膜囊泡的外膜囊泡是什么?牙周炎的发病因子是牙周炎的病原体.

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