当前位置: X-MOL 学术Arch. Biochem. Biophys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
CPEB1 or CPEB4 knockdown suppresses the TAK1 and Smad signalings in THP-1 macrophage-like cells and dermal fibroblasts.
Archives of Biochemistry and Biophysics ( IF 3.9 ) Pub Date : 2020-02-27 , DOI: 10.1016/j.abb.2020.108322
Hui Song Cui 1 , So Young Joo 2 , Yoon Soo Cho 2 , June-Bum Kim 3 , Cheong Hoon Seo 2
Affiliation  

Post-burn hypertrophic scar (HTS) is a form of excessive dermal fibrosis characterized by cutaneous scarring, which is common in patients following burn injury. Moreover, at least 50% of HTS are accompanied by inflammation. Cytoplasmic polyadenylation element binding (CPEB) proteins are key mRNA-binding proteins that control the translation of several mRNAs. However, their potential roles in treating dermal fibrosis and scarring remain unknown. Therefore, in this study, we aimed to investigate the effects of small interfering RNA (siRNA)-mediated knockdown of CPEB1 or CPEB4 in human THP-1 macrophages and dermal fibroblasts treated with LPS and TGF-β1. We found significantly increased CPEB1 and CPEB4 mRNA and protein levels in LPS-treated THP-1 cells and TGF-β1-treated fibroblasts. CPEB1 and CPEB4 knockdowns suppressed LPS-activated TAK1 signaling cascades by reducing the levels of TNF-α and phosphorylated TAK1, p38, ERK, JNK, and NF-κB-p65 in THP-1 cells. CPEB1 and CPEB4 knockdowns also attenuated TGF-β1-activated Smad-dependent and -independent signaling cascades by reducing the levels of TAK1, p38, ERK, JNK, and phosphorylated Smad 2 and Smad 1/5/8 in fibroblasts. Furthermore, CPEB1 or CPEB4 knockdown markedly decreased the levels of fibrosis markers, including α-SMA, type I collagen, and fibronectin in fibroblasts. Our findings indicate that CPEB1 and CPEB4 are involved in the regulation of the TAK1 and Smad signalings in human macrophages and dermal fibroblasts. These activities may play a role in cutaneous scarring responses.

中文翻译:

CPEB1或CPEB4敲低抑制THP-1巨噬细胞样细胞和皮肤成纤维细胞中的TAK1和Smad信号传导。

烧伤后肥厚性瘢痕(HTS)是一种以皮肤疤痕为特征的过度皮肤纤维化,在烧伤后的患者中很常见。而且,至少50%的HTS伴有炎症。细胞质聚腺苷酸化元素结合(CPEB)蛋白是关键的mRNA结合蛋白,可控制几种mRNA的翻译。然而,它们在治疗皮肤纤维化和瘢痕形成中的潜在作用仍然未知。因此,在这项研究中,我们旨在研究小分子干扰RNA(siRNA)介导的CPEB1或CPEB4敲除对人THP-1巨噬细胞和LPS和TGF-β1处理的真皮成纤维细胞的影响。我们发现,LPS处理的THP-1细胞和TGF-β1处理的成纤维细胞中CPEB1和CPEB4 mRNA和蛋白水平显着增加。通过降低THP-1细胞中的TNF-α和磷酸化的TAK1,p38,ERK,JNK和NF-κB-p65的水平,CPEB1和CPEB4的敲低可抑制LPS激活的TA​​K1信号级联反应。通过降低成纤维细胞中TAK1,p38,ERK,JNK和磷酸化Smad 2和Smad 1/5/8的水平,CPEB1和CPEB4的敲低还减弱了TGF-β1激活的Smad依赖性和非依赖性信号级联。此外,CPEB1或CPEB4的敲低显着降低了成纤维细胞中纤维化标记物的水平,包括α-SMA,I型胶原和纤连蛋白。我们的发现表明,CPEB1和CPEB4参与了人类巨噬细胞和皮肤成纤维细胞中TAK1和Smad信号的调控。这些活动可能在皮肤瘢痕形成反应中起作用。和THP-1细胞中的NF-κB-p65。通过降低成纤维细胞中TAK1,p38,ERK,JNK和磷酸化Smad 2和Smad 1/5/8的水平,CPEB1和CPEB4的敲低还减弱了TGF-β1激活的Smad依赖性和非依赖性信号级联。此外,CPEB1或CPEB4的敲低显着降低了成纤维细胞中纤维化标记物的水平,包括α-SMA,I型胶原和纤连蛋白。我们的发现表明,CPEB1和CPEB4参与了人类巨噬细胞和皮肤成纤维细胞中TAK1和Smad信号的调控。这些活动可能在皮肤瘢痕形成反应中起作用。和THP-1细胞中的NF-κB-p65。通过降低成纤维细胞中TAK1,p38,ERK,JNK和磷酸化Smad 2和Smad 1/5/8的水平,CPEB1和CPEB4的敲低还减弱了TGF-β1激活的Smad依赖性和非依赖性信号级联。此外,CPEB1或CPEB4的敲低显着降低了成纤维细胞中纤维化标记物的水平,包括α-SMA,I型胶原和纤连蛋白。我们的发现表明,CPEB1和CPEB4参与了人类巨噬细胞和皮肤成纤维细胞中TAK1和Smad信号的调控。这些活动可能在皮肤瘢痕形成反应中起作用。CPEB1或CPEB4的敲低显着降低了成纤维细胞中纤维化标记物的水平,包括α-SMA,I型胶原和纤连蛋白。我们的发现表明,CPEB1和CPEB4参与了人类巨噬细胞和皮肤成纤维细胞中TAK1和Smad信号的调控。这些活动可能在皮肤瘢痕形成反应中起作用。CPEB1或CPEB4敲低显着降低了成纤维细胞中纤维化标志物的水平,包括α-SMA,I型胶原和纤连蛋白。我们的发现表明,CPEB1和CPEB4参与了人类巨噬细胞和皮肤成纤维细胞中TAK1和Smad信号的调控。这些活动可能在皮肤瘢痕形成反应中起作用。
更新日期:2020-02-27
down
wechat
bug