芦丁可减轻体外小鼠肌肉细胞(C2C12)模型中脂多糖诱导的炎症反应。

Rutin attenuates inflammatory responses induced by lipopolysaccharide in an in vitro mouse muscle cell (C2C12) model.

机构信息

Department of Animal Science, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.

Department of Animal Science and Aquaculture, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia B2N 5E3, Canada.

出版信息

Poult Sci. 2019 Jul 1;98(7):2756-2764. doi: 10.3382/ps/pez037.

Abstract

White striping (WS) and woody breast (WB) are 2 of the major myopathies in the modern poultry industry. Even though the exact etiology for WS and WB is still unknown, differentially expressed genes in broiler breast muscle affected by WS and WB indicate that oxidative stress and inflammation could be involved in their occurrences. Therefore, it is very important to identify natural compounds with anti-oxidative stress and anti-inflammation properties that can reduce the occurrences of WS and WB in broiler chickens. Rutin is a polyphenol antioxidant that has been reported to be present in several plant extracts. In the current study, we established an in vitro inflammation model by using mouse muscle cells (C2C12) and evaluated the effects of rutin on lipopolysaccharide (LPS)-induced inflammatory responses in the muscle cells. Interleukin 6 (IL-6) secretion was measured by enzyme-linked immunosorbent assay. The mRNA abundance of cytokines and inducible nitric oxide synthase (iNOS) was measured by real-time PCR. Nuclear factor kappa B (NF-κB) activation was detected by electrophoretic mobility shift assay. The results showed that LPS (25 ng/ml) stimulation quickly activated NF-κB and induced significant IL-6 expression on both mRNA and protein levels (P < 0.05) in cells when compared with control cells without the LPS treatment. The rutin treatment decreased IL-6 mRNA abundance induced by LPS in a dose-dependent manner (P < 0.05). LPS-induced tumor necrosis factor-alpha and iNOS gene expression was significantly attenuated by 100 μM of rutin (P < 0.05). Moreover, LPS induced reactive oxygen species (ROS) production, and NF-κB activation was significantly blocked by 100 μM of rutin. These results suggest that rutin can attenuate LPS-induced inflammation in muscle cells and supplementation of rutin or rutin-containing plant extracts may present a promising approach to control WS and WB in broiler chickens.

摘要

白色条纹(WS)和木质胸脯(WB)是现代家禽业中的两种主要肌肉疾病。尽管 WS 和 WB 的确切病因尚不清楚,但受 WS 和 WB 影响的肉鸡胸肌中的差异表达基因表明,氧化应激和炎症可能与它们的发生有关。因此,识别具有抗氧化应激和抗炎特性的天然化合物非常重要,这些化合物可以减少肉鸡中 WS 和 WB 的发生。芦丁是一种多酚抗氧化剂,已被报道存在于几种植物提取物中。在本研究中,我们通过使用小鼠肌肉细胞(C2C12)建立了体外炎症模型,并评估了芦丁对肌肉细胞中脂多糖(LPS)诱导的炎症反应的影响。通过酶联免疫吸附测定法测量白细胞介素 6(IL-6)的分泌。通过实时 PCR 测量细胞因子和诱导型一氧化氮合酶(iNOS)的 mRNA 丰度。通过电泳迁移率变动分析检测核因子 kappa B(NF-κB)的激活。结果表明,与未用 LPS 处理的对照细胞相比,LPS(25ng/ml)刺激迅速激活了 NF-κB,并在 mRNA 和蛋白水平上诱导了显著的 IL-6 表达(P <0.05)。芦丁处理以剂量依赖性方式降低了 LPS 诱导的 IL-6 mRNA 丰度(P <0.05)。100μM 芦丁显著减弱了 LPS 诱导的肿瘤坏死因子-α和 iNOS 基因表达(P <0.05)。此外,LPS 诱导的活性氧(ROS)产生和 NF-κB 激活被 100μM 芦丁显著阻断。这些结果表明,芦丁可以减轻肌肉细胞中 LPS 诱导的炎症,补充芦丁或含有芦丁的植物提取物可能是控制肉鸡 WS 和 WB 的一种有前途的方法。

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