慢性肺炎患者表现出明显的基因表达,加速细胞衰老,以及对M2巨细胞的偏差
Camila Oliveira da Silva1, Jeane de Souza Nogueira1, Adriana Paulino do Nascimento2
1Laboratory of Histocompatibility and Cryopreservation, University of the State of Rio de Janeiro, Rio de Janeiro 20550-900, Brazil.
International journal of molecular sciences
|June 28, 2023
概括
慢性阻塞性肺病 (COPD) 涉及改变基因表达和缩短端粒. 慢性肺炎患者也显示向M2巨细胞的转变,表明新的治疗点.
科学领域:
- 肺部医学 肺部医学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 慢性阻塞性肺病 (COPD) 是主要的死亡原因,其特点是空气流量限制和各种临床表现.
- 关键的表型包括喘/COPD重叠 (ACO),恶化和肺气,严重程度从轻度到非常严重.
- 了解炎症,细胞衰老和免疫反应的分子基础对于COPD的发病过程至关重要.
研究的目的:
- 在COPD患者中研究EP300,HDAC2,HDAC3和HDAC4的基因表达.
- 评估与COPD相关的端粒长度和M1/M2巨细胞分化.
- 探索这些分子因素与COPD表型和严重程度之间的关联.
主要方法:
- 评估了105名COPD患者,42名吸烟者和73名非吸烟者对照组.
- 测量了EP300,HDAC2,HDAC3和HDAC4.4的基因表达水平.
- 评估端粒长度和巨细胞分化标志物 (M1/M2).
主要成果:
- 在轻度,中度和重度的慢性肺炎以及肺气和恶化现象型中观察到HDAC2的减少表达.
- 在中度和重度的慢性肺炎中发现了减少的HDAC3表达,以及在肺表型中.
- 在轻度的COPD中发现了增加的HDAC4表达,而在严重的COPD中出现了减少的EP300表达. 吸烟者和COPD患者都表现出端粒缩短.
- 慢性肺炎患者对M2巨细胞标记物的倾向更大.
结论:
- 在EP300和HDAC基因的遗传变化与COPD表型和严重程度相关.
- 端粒缩短在吸烟者和COPD患者中普遍存在.
- 在COPD中观察到的M2巨细胞的患病率表明了开发个性化治疗策略的潜在影响.
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