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Upregulation of microRNA-195 ameliorates calcific aortic valve disease by inhibiting VWF via suppression of the p38-MAPK signaling pathway.
International Journal of Cardiology ( IF 3.5 ) Pub Date : 2020-01-08 , DOI: 10.1016/j.ijcard.2020.01.001
Lieming Yang 1 , Dawei Wu 1 , Mengqi Li 1 , Xinyuan Zhu 1 , Yikui Tian 1 , Zhi Chen 1 , Mingbiao Li 1 , Hao Zhang 1 , Degang Liang 1
Affiliation  

BACKGROUND Growing evidence has indicated that microRNAs (miRNAs) are involved in the progression of calcific aortic valve disease (CAVD), a progressive pathological condition with no effective pharmacological therapy. This study was set out with the aim to investigate possible roles of miR-195 in CAVD. METHODS AND RESULTS Initially, the differential expressed genes (DEGs) associated with CAVD were screened out and miRNAs potentially regulating VWF were predicted from microarray analysis. Next, we quantified VWF and miR-195 expression in isolated aortic valve interstitial cells (AVICs) and aortic valve tissues, followed by confirmation of the target relationship between miR-195 and VWF using the dual luciferase reporter assay. Furthermore, we evaluated the biological functions of miR-195 and VWF on ALP activity, cell differentiation, and the levels of miR-195, VWF, Runx2, OCN, ALP, p38 and phosphorylated p38 in AVICs. VWF was highly expressed, while miR-195 was poorly expressed in CAVD. Furthermore, miR-195 targeted VWF and negatively regulated its expression. Upregulation of miR-195 or silencing VWF could reduce ALP activity, calcified deposition, and the mRNA and protein levels of Runx2, OCN, and ALP by inhibiting the p38-MAPK signaling pathway, thereby ameliorating aortic valve calcification in vitro. CONCLUSIONS On all accounts, miR-195 can potentially inhibit aortic valve calcification by repressing VWF and p38-MAPK signaling pathway, highlighting a theoretical basis for pharmacological treatment of CAVD.

中文翻译:

上调 microRNA-195 通过抑制 p38-MAPK 信号通路抑制 VWF 来改善钙化性主动脉瓣疾病。

背景越来越多的证据表明,microRNAs (miRNAs) 与钙化性主动脉瓣疾病 (CAVD) 的进展有关,CAVD 是一种进行性病理状况,没有有效的药物治疗。本研究旨在调查 miR-195 在 CAVD 中的可能作用。方法和结果 最初,筛选出与 CAVD 相关的差异表达基因 (DEG),并通过微阵列分析预测可能调节 VWF 的 miRNA。接下来,我们量化了分离的主动脉瓣间质细胞 (AVIC) 和主动脉瓣组织中的 VWF 和 miR-195 表达,然后使用双荧光素酶报告基因测定确认 miR-195 和 VWF 之间的靶标关系。此外,我们评估了 miR-195 和 VWF 对 ALP 活性、细胞分化、以及 AVICs 中 miR-195、VWF、Runx2、OCN、ALP、p38 和磷酸化 p38 的水平。VWF 高表达,而 miR-195 在 CAVD 中低表达。此外,miR-195 靶向 VWF 并负调控其表达。上调 miR-195 或沉默 VWF 可通过抑制 p38-MAPK 信号通路降低 ALP 活性、钙化沉积以及 Runx2、OCN 和 ALP 的 mRNA 和蛋白水平,从而改善体外主动脉瓣钙化。结论 总而言之,miR-195 可通过抑制 VWF 和 p38-MAPK 信号通路潜在地抑制主动脉瓣钙化,为 CAVD 的药物治疗提供了理论基础。miR-195 靶向 VWF 并负调控其表达。上调 miR-195 或沉默 VWF 可通过抑制 p38-MAPK 信号通路降低 ALP 活性、钙化沉积以及 Runx2、OCN 和 ALP 的 mRNA 和蛋白水平,从而改善体外主动脉瓣钙化。结论 总而言之,miR-195 可以通过抑制 VWF 和 p38-MAPK 信号通路潜在地抑制主动脉瓣钙化,为 CAVD 的药物治疗提供了理论基础。miR-195 靶向 VWF 并负调控其表达。上调 miR-195 或沉默 VWF 可通过抑制 p38-MAPK 信号通路降低 ALP 活性、钙化沉积以及 Runx2、OCN 和 ALP 的 mRNA 和蛋白水平,从而改善体外主动脉瓣钙化。结论 总而言之,miR-195 可通过抑制 VWF 和 p38-MAPK 信号通路潜在地抑制主动脉瓣钙化,为 CAVD 的药物治疗提供了理论基础。
更新日期:2020-01-08
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