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首页> 外文期刊>Journal of Cellular Physiology >Transcription Factor MEF2C Suppresses Endothelial Cell Inflammation via Regulation of NF-kappa B and KLF2
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Transcription Factor MEF2C Suppresses Endothelial Cell Inflammation via Regulation of NF-kappa B and KLF2

机译:转录因子MEF2C抑制内皮nf -κB细胞通过调节炎症

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Endothelial cells play a major role in the initiation and perpetuation of the inflammatory process in health and disease, including their pivotal role in leukocyte recruitment. The role of pro-inflammatory transcription factors in this process has been well-described, including NF-B. However, much less is known regarding transcription factors that play an anti-inflammatory role in endothelial cells. Myocyte enhancer factor 2C (MEF2C) is a transcription factor known to regulate angiogenesis in endothelial cells. Here, we report that MEF2C plays a critical function as an inhibitor of endothelial cell inflammation. Tumor necrosis factor (TNF)- inhibited MEF2C expression in endothelial cells. Knockdown of MEF2C in endothelial cells resulted in the upregulation of pro-inflammatory molecules and stimulated leukocyte adhesion to endothelial cells. MEF2C knockdown also resulted in NF-B activation in endothelial cells. Conversely, MEF2C overexpression by adenovirus significantly repressed TNF- induction of pro-inflammatory molecules, activation of NF-B, and leukocyte adhesion to endothelial cells. This inhibition of leukocyte adhesion by MEF2C was partially mediated by induction of KLF2. In mice, lipopolysaccharide (LPS)-induced leukocyte adhesion to the retinal vasculature was significantly increased by endothelial cell-specific ablation of MEF2C. Taken together, these results demonstrate that MEF2C is a novel negative regulator of inflammation in endothelial cells and may represent a therapeutic target for vascular inflammation. J. Cell. Physiol. 230: 1310-1320, 2015. (c) 2014 Wiley Periodicals, Inc., A Wiley Company
机译:内皮细胞中发挥重要作用启动及延续的炎症在健康和疾病过程,包括他们在白细胞招募关键的作用。促炎的转录因子过程已经被很好的描述,包括NF-B。然而,更有关转录因子发挥在内皮细胞抗炎作用。肌细胞增强因子2 c (MEF2C)转录因子调节在内皮细胞血管生成。作为一个报告MEF2C扮演了一个关键职能抑制剂的内皮细胞炎症。坏死因子(TNF)——抑制MEF2C表达式在内皮细胞。内皮细胞导致的upregulation促炎症分子和刺激内皮细胞白细胞粘附。击倒也导致NF-B激活内皮细胞。过度的腺病毒显著抑制肿瘤坏死因子-诱导的促炎症分子,激活NF-B和白细胞内皮细胞粘附。白细胞粘附MEF2C部分由KLF2的感应。脂多糖(LPS)全身的白细胞视网膜血管粘附大大增加了内皮特异性MEF2C消融。这些结果说明MEF2C是一部小说负调节内皮炎症细胞和可能代表的治疗目标血管炎症。1310 - 1320年,2015年。Inc .威利公司

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