Dnmt3a介导的DNA甲基化调节P. gingivalis抑制的水泥细胞矿化部分通过线粒体依赖的亡途径
Heyu Liu1, Li Ma1,2, Huiyi Wang1
1State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
Inflammation
|January 9, 2025
概括
Porphyromonas gingivalis 通过抑制 DNA 甲基转移酶 3A (Dnmt3a) 来降低水泥细胞矿化,从而导致细胞亡. 这项研究阐明了Dnmt3a在水泥生成中的作用及其被口腔细菌破坏.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 牙周病学 牙周病学
背景情况:
- 在生理和病理过程中,DNA甲基转移酶3A (Dnmt3a) 对DNA甲基化至关重要.
- 通过Dnmt3a,Porphyromonas gingivalis对水泥细胞 (负责水泥形成的细胞) 的影响仍然不清楚.
研究的目的:
- 调查Dnmt3a在水泥区矿化中的作用.
- 为了确定 Porphyromonas gingivalis 是否通过 Dnmt3a 介导的 DNA 甲基化影响水泥细胞.
主要方法:
- 分析了Dnmt3a表达在老鼠周周病变和不同的年龄.
- 与Dnmt3a过度表达的水泥细胞共同培养P. gingivalis,并进行Dnmt3a淘汰/抑制.
- 评估了水泥细胞矿化,DNA甲基化,细胞灭绝和基因表达通过qPCR,西部涂抹,ALP活性,阿利扎林红色,RNA测序和流细胞计.
主要成果:
- 在水泥细胞矿化过程中,Dnmt3a表达和全球DNA甲基化增加,但周围炎症减少.
- P. gingivalis 减少了DNA甲基化和水泥细胞矿化.
- Dnmt3a的淘汰和甲基化抑制损害了水泥细胞矿化,与线粒体依赖的亡相关.
结论:
- P. gingivalis通过沉默Dnmt3a来抑制水泥细胞的水泥生成,从而触发了依赖于线粒体的亡.
- Dnmt3a在维持水泥细胞矿化方面发挥着关键作用,是P. gingivalis.的目标.
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