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PRMT6 mediates CSE induced inflammation and apoptosis

机译:PRMT6介导CSE诱导的炎症和细胞凋亡

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摘要

Cigarette smoke extract (CSE) induces apoptosis and inflammation, but the mechanism is unknown. Arginine methyltransferase (PRMT6) catalyzes the asymmetric di-methylation of histone H3 arginine 2 (H3R2me2a) to control global level transcription. We hypothesized that PRMT6 mediates CSE induced apoptosis and inflammation through H3R2me2a. The apoptosis after CSE treatment in human umbilical vein endothelial cells (HUVECs) was fully measured with real-time reverse transcription PCR, western blotting and Annexin-V staining. Meanwhile, the inflammation in HUVECs after CSE exposure was detected with real-time reverse transcription PCR, western blotting and ELISA. CSE treatment promoted apoptosis and inflammation in HUVECs, coinciding with the decreased protein abundance of PRMT6. Meanwhile, HUVECs transfected with PRMT6 expressing plasmid inhibited the CSE-induced apoptosis and inflammation. Also, the inhibition of PRMT6 promoted the apoptosis and inflammation in HUVECs induced by CSE. Notably, H3R2me2a was associated with the modulation of PRMT6 in CSE induced apoptosis and inflammation in HUVECs. In conclusion, PRMT6 mediates CSE induced apoptosis and inflammation through H3R2me2a in HUVECs. (C) 2014 Elsevier B.V. All rights reserved.
机译:香烟烟雾提取物(CSE)诱导细胞凋亡和炎症,但其机制尚不清楚。精氨酸甲基转移酶(PRMT6)催化组蛋白H3精氨酸2(H3R2me2a)的不对称二甲基化,以控制全局水平的转录。我们假设PRMT6通过H3R2me2a介导CSE诱导的细胞凋亡和炎症。实时逆转录PCR,Western印迹和Annexin-V染色完全测量了CSE处理后人脐静脉内皮细胞(HUVEC)中的凋亡。同时,通过实时逆转录PCR,Western印迹和ELISA检测了CSE暴露后HUVEC中的炎症。 CSE治疗促进了HUVEC的凋亡和炎症,这与PRMT6蛋白质丰度的降低相吻合。同时,用表达PRMT6的质粒转染的HUVEC抑制了CSE诱导的细胞凋亡和炎症。而且,PRMT6的抑制促进了CSE诱导的HUVEC中的细胞凋亡和炎症。值得注意的是,H3R2me2a与CSE诱导的HUVEC细胞凋亡和炎症反应中PRMT6的调节有关。总之,PRMT6通过HUVEC中的H3R2me2a介导CSE诱导的细胞凋亡和炎症。 (C)2014 Elsevier B.V.保留所有权利。

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