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Suppression of miR-203-3p inhibits lipopolysaccharide induced human intervertebral disc inflammation and degeneration through upregulating estrogen receptor α.
Gene Therapy ( IF 5.1 ) Pub Date : 2020-01-02 , DOI: 10.1038/s41434-019-0118-z
Zhongxu Cai 1 , Kunpeng Li 2 , Keshi Yang 2 , Dawei Luo 2 , Hui Xu 2
Affiliation  

Accumulating evidence demonstrates that estrogen receptor α (ERα) and microRNAs (miRNAs) play crucial roles in intervertebral disc degeneration (IDD). However, the specific miRNA that related with ERα during IDD development remains unknown. Therefore, we aimed to explore the role of ERα-related miRNA in the IDD model. Nucleus pulposus (NP) cells were isolated from IDD patients. ERα-related miRNAs were selected and verified in NP tissues from IDD patients using quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Also, the related cytokine mRNA levels were detected by qRT-PCR. Protein levels were determined by Western blot. The concentrations of inflammatory cytokines in culture supernatants were detected by enzyme-linked immunosorbent assay. MiR-203-3p was found to be upregulated in NP tissues of high-grade IDD patients compared with low-grade IDD patients, and negatively associated with ERα expression. MiR-203-3p directly targeted ERα in NP cells of IDD patients. After lipopolysaccharides (LPS) stimulation, miR-203-3p expression increased, while ERα expression decreased in NP cells. MiR-203-3p inhibition suppressed the effect of LPS on ERα expression and IDD related genes, while ERα downregulation rescued the effect of LPS. In conclusion, suppression the expression of miR-203-3p could inhibit LPS-induced human intervertebral disc inflammation and degeneration through upregulating ERα.

中文翻译:

抑制 miR-203-3p 通过上调雌激素受体 α 抑制脂多糖诱导的人椎间盘炎症和变性。

越来越多的证据表明,雌激素受体 α (ERα) 和 microRNAs (miRNAs) 在椎间盘退变 (IDD) 中起关键作用。然而,在 IDD 发育过程中与 ERα 相关的特定 miRNA 仍然未知。因此,我们旨在探索 ERα 相关 miRNA 在 IDD 模型中的作用。从 IDD 患者中分离出髓核 (NP) 细胞。使用定量逆转录聚合酶链反应 (qRT-PCR) 在 IDD 患者的 NP 组织中选择和验证 ERα 相关 miRNA。此外,通过qRT-PCR检测相关细胞因子mRNA水平。通过蛋白质印迹测定蛋白质水平。酶联免疫吸附法检测培养上清液中炎性细胞因子的浓度。与低级别 IDD 患者相比,发现 MiR-203-3p 在高级别 IDD 患者的 NP 组织中上调,并且与 ERα 表达呈负相关。MiR-203-3p 直接靶向 IDD 患者 NP 细胞中的 ERα。脂多糖(LPS)刺激后,miR-203-3p表达增加,而ERα表达在NP细胞中减少。MiR-203-3p 抑制抑制了 LPS 对 ERα 表达和 IDD 相关基因的影响,而 ERα 下调挽救了 LPS 的作用。总之,抑制 miR-203-3p 的表达可以通过上调 ERα 抑制 LPS 诱导的人椎间盘炎症和退行性变。在 NP 细胞中 miR-203-3p 表达增加,而 ERα 表达减少。MiR-203-3p 抑制抑制了 LPS 对 ERα 表达和 IDD 相关基因的影响,而 ERα 下调挽救了 LPS 的作用。总之,抑制 miR-203-3p 的表达可以通过上调 ERα 抑制 LPS 诱导的人椎间盘炎症和退行性变。在 NP 细胞中 miR-203-3p 表达增加,而 ERα 表达减少。MiR-203-3p 抑制抑制了 LPS 对 ERα 表达和 IDD 相关基因的影响,而 ERα 下调挽救了 LPS 的作用。总之,抑制 miR-203-3p 的表达可以通过上调 ERα 抑制 LPS 诱导的人椎间盘炎症和退行性变。
更新日期:2020-01-02
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