Different responses of selenoproteins to the altered expression of selenoprotein W in chicken myoblasts

Different responses of selenoproteins to the altered expression of selenoprotein W in chicken myoblasts
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鸡成肌细胞中硒蛋白对硒蛋白W表达改变的不同反应

DOI:
10.1039/c4ra11502c
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发表时间:
2014-11
期刊:
RSC Adv
影响因子:
--
通讯作者:
Shiwen Xu
Shiwen Xu
中科院分区:
其他
文献类型:
--
作者:
Xia Zhao;Pervez Ahmed Khoso;Ziwei Zhang;Shiwen Xu

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本研究的目的是研究硒蛋白W(Sepw 1)在调节其他硒蛋白的表达中的作用。在本研究中,我们沉默和过度表达的Sepw 1在鸡成肌细胞的表达,随后处理成肌细胞与活性氧(ROS)清除剂,N-乙酰-L-半胱氨酸(NAC),和H2 O2。此后,25硒蛋白的表达水平和某些抗氧化酶,谷胱甘肽过氧化物酶(Gpx),超氧化物歧化酶(SOD)和过氧化氢酶(CAT)的活性进行了分析。此外,主成分分析(PCA)被用来确定最重要的参数,可以用作关键因素。结果表明,Sepw 1作为一种高表达的硒蛋白(仅低于Gpx 1、Selk、Sels和Sep 15),能与H2 O2相互作用(P < 0.05),影响部分硒蛋白(Gpx 3、Gpx 4、Txnrd 1、Selt、Selh、Sepp 1、Sels和Sep 15,P < 0.05)的表达及细胞对H2 O2的敏感性。Sepw 1的过表达和沉默均影响硒蛋白的mRNA水平。然而,硒蛋白改变Sepw 1表达的反应是不同的。上述结果表明,Sepw 1在H2 O2代谢中发挥着特殊的作用,可能通过氧化还原途径调控某些硒蛋白的表达。因此,这些结果表明,Sepw 1是鸡成肌细胞的一个重要的抗氧化硒蛋白。
The aim of the present study was to examine the role of Selenoprotein W (Sepw1) in modulating the expression of other selenoproteins. In the present study, we silenced and overexpressed the expression of Sepw1 in chicken myoblasts and subsequently treated the myoblasts with a reactive oxygen species (ROS) scavenger, N-acetyl-L-cysteine (NAC), and H2O2. Thereafter, the levels of expression of 25 selenoproteins and the activities of certain antioxidative enzymes, glutathione peroxidase (Gpx), superoxide dismutase (SOD), and catalase (CAT) were analyzed. In addition, principal component analysis (PCA) was used to define the most important parameters that could be used as key factors. The results indicated that as a highly expressed selenoprotein (only lower than Gpx1, Selk, Sels and Sep15), Sepw1 could interact with H2O2 (P < 0.05) and influence the expression of some selenoproteins (Gpx3, Gpx4, Txnrd1, Selt, Selh, Sepp1, Sels and Sep15, P < 0.05) and the sensitivity of the cells to H2O2. Both the overexpression and silencing of Sepw1 influenced the mRNA levels of selenoproteins. However, the responses of selenoproteins to altered Sepw1 expression were different. The results indicated that Sepw1 played a special role in H2O2 metabolism and may modulate the expression of certain selenoproteins through the redox pathway. Therefore, these results indicate that Sepw1 is an essential antioxidative selenoprotein in chicken myoblasts.
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