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黑色素调节ZAP70和CD40转录通过质子修饰在犬的皮质上皮细胞中
Jian Hong1,2, Saber Y Adam2, Shiqi Wang2,3
1School of Marine and Biological Engineering, Yancheng Teachers University, Yancheng 224002, China.
Veterinary sciences
|February 26, 2025
概括
黑色素 (MLT) 通过改变ZAP70和CD40位点的基因表达和基因素修饰来影响狗肠细胞. 这表明MLT可能有助于减少炎症性肠道疾病中的炎症.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 黑色素 (MLT) 是由松果腺产生的一种激素,具有抗炎性质.
- 已知MLT可以调节肠道细胞中的炎症标志物和细胞因子.
- 基因组蛋白修饰在基因表达调节中起着至关重要的作用.
研究的目的:
- 调查MLT对犬皮上皮细胞 (cIECs) 炎症基因表达的影响.
- 为了确定MLT是否通过cIECs中的基因基因修饰来影响基因表达.
- 探索MLT在炎症性肠道疾病中的潜在治疗作用.
主要方法:
- 原发性犬皮上皮细胞 (cIECs) 被培养并用MLT进行治疗.
- 使用RT-qPCR分析了各种炎症基因的mRNA表达水平.
- 进行染色体免疫沉,然后进行定量PCR (ChIP-qPCR),以评估特定基因位点的基因修饰和RNA聚合酶II丰富.
主要成果:
- MLT治疗改变了几个基因的mRNA表达,包括CD40和ZAP70的上调,以及其他基因的下调.
- MLT显著调节了NF-kappa B信号通路.
- 在ZAP70和CD40基因位点上,MLT增强了特异性基因素乙化 (H3K9ac,H3K18ac,H3K27ac) 和甲基化 (H3K4me1,H3K4me3) 的标记.
- 在这些位置观察到RNA聚合酶II和化Ser5 pol-II的丰富度增加,表明转录活性增强.
结论:
- 在CIEC中,MLT通过基因组修饰来调节ZAP70和CD40的转录.
- 这些表观遗传变化表明了MLT发挥抗炎作用的机制.
- 这些发现为管理炎症性肠道疾病提供了潜在的治疗见解.
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