兰克IVVY图案在骨质细胞形成中起着至关重要的作用
Shenyuan Chen1, Zhenqi Shi2, Joel Jules2
1Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA; The Affiliated Stomatological Hospital of Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases, Chongqing, China.
Bone
|December 12, 2024
概括
这是一个RANK受体.
科学领域:
- 骨生物学和骨质细胞形成
- 细胞信号传递的分子机制
- 口腔微生物学和牙周病
背景情况:
- RANKL-RANK信号传递对于骨质细胞分化和骨再吸收至关重要.
- 兰克具有一个TRAF独立的动机 (IVVY),对于骨质细胞系的承诺至关重要.
- 在特定刺激诱导的骨质结晶生成中IVVY基因的作用尚不清楚.
研究的目的:
- 为了研究RANK IVVY动机在骨质细胞形成中的体内和体外功能.
- 确定IVVY基因在Porphyromonas gingivalis诱导的骨质细胞形成中的作用.
- 阐明IVVY基因调节骨质细胞分化的分子机制.
主要方法:
- 产生具有RANK IVVY基因 (RANKAF/AF) 失活突变的诺金小鼠.
- 微计算机断层扫描 (μCT) 和对小鼠大腿骨的体形测量分析.
- 使用骨髓巨细胞 (BMM) 进行M-CSF和RANKL刺激的体外骨质细胞分化试验,包括Porphyromonas gingivalis挑战.
主要成果:
- 在RANKAF/AF小鼠中,由于体内骨质细胞形成受损,肌骨质量增加.
- 尽管NF-B,ERK,p38和JNK信号保持完整,但BMM在体外未能形成骨质细胞.
- 在RANKAF/AF BMMs中,RANKL诱导的c-Fos和NFATc1的表达受损,影响Porphyromonas gingivalis诱导的骨质结晶发生.
结论:
- 兰克IVVY图案对于体内和体外骨质细胞形成是必不可少的.
- 在 Porphyromonas gingivalis 介导的骨质细胞形成中,IVVY 基因起着至关重要的作用.
- IVVY动机通过调节c-Fos和NFATc1表达来调节骨质细胞分化,以应对RANKL和 Porphyromonas gingivalis.
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