通过DNMT3a介导的PPARγ甲基化,通过调节NF-κB通路,促进椎间盘退化
Peng Cheng1,2, Hang-Zhi Wei3, Hai-Wei Chen1
1Department of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China.
Journal of cellular and molecular medicine
|November 21, 2023
概括
DNA甲基转移酶3a (DNMT3a) 通过促进细胞死亡和基质分解,驱动椎间盘退化 (IVDD). 抑制DNMT3a为治疗IVDD提供了一个潜在的治疗策略.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 椎间盘退化 (IVDD) 是慢性腰部疼痛的一个普遍原因.
- 驱动IVDD病变的精确分子机制仍然不完全理解.
- 表观遗传修饰越来越多地与IVDD的发展和进展有关.
研究的目的:
- 调查DNA甲基转移酶3a (DNMT3a) 和过氧体增殖器激活受体γ (PPARγ) 在IVDD中的作用.
- 阐明IVDD中DNMT3a,PPARγ和核因子-κB (NF-κB) 途径之间的表观遗传机制.
主要方法:
- 免疫组织化学和西部涂抹,以评估在人类IVDD组织中DNMT3a和PPARγ的表达.
- 在实验室中使用大鼠核脉 (NP) 细胞进行研究,以评估DNMT3a抑制对细胞亡和细胞外基质 (ECM) 降解的影响.
- 药理上抑制PPARγ以评估其与DNMT3a介导作用的相互作用.
主要成果:
- 抑制DNMT3a显著降低了IL-1β诱导的亡和 ECM降解在老鼠的NP细胞中.
- 抑制PPARγ逆转了DNMT3a抑制的保护作用,表明存在功能联系.
- 从机制上来说,DNMT3a被发现诱导PPARγ促进剂高甲基化,导致NF-κB通路的激活.
结论:
- DNMT3a通过PPARγ促进剂高甲基化激活NF-κB通路来促进IVDD,从而增加细胞亡和ECM降解.
- 针对DNMT3a介导的PPARγ/NF-κB轴为IVDD治疗提供了一个有希望的治疗途径.
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