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首页> 外文期刊>Journal of cellular physiology. >Posttranscriptional regulation of MMP-9 by HuR contributes to IL-ip-induced pterygium fibroblast migration and invasion
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Posttranscriptional regulation of MMP-9 by HuR contributes to IL-ip-induced pterygium fibroblast migration and invasion

机译:转录后的调控MMP-9户珥有助于IL-ip-induced翼状胬肉成纤维细胞迁移和入侵

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摘要

Inflammation is considered to be critical in the pterygium progression and recurrence. However, the underlying molecular mechanism is not well understood. Herein, we investigated the potential role of RNA binding protein human antigen R (HuR) responsible for the impact of inflammation on pterygium development. The expression of HuR and matrix metallopeptidase-9 (MMP-9) in pterygium and normal conjunctiva was detected with immunohistochemistry and quantitative reverse transcription polymerase chain reaction (qRT-PCR). The influence of interleukin-1β (IL-1β) on HuR expression and cellular distribution was determined with western blot and immunofluorescence. The pterygium fibroblast (PTF) migration was determined with scratch wound healing assay and Transwell migration assay. MMP-9 production was determined with qRT-PCR and gelatin zymography. The interaction between HuR and MMP-9 was investigated with RNP immunoprecipitation (IP) followed by RT-PCR and messenger RNA (mRNA) stability analysis. HuR and MMP-9 expression are elevated in pterygium, especially progressive pterygium compared with normal conjunctiva. IL-1β could increase the expression and nucleus-cytoplasm shuttle of HuR in cultured PTFs. HuR mediated the stimulatory effect of IL-1β on PTF migration and MMP-9 production. HuR bound to MMP-9 mRNA and in turn increased it stability. Our results suggest that posttranscriptional regulation of MMP-9 via stabilizing mRNA by HuR might contribute to the stimulatory effect of inflammatory factor IL-1β on pterygium progression. These findings shed light on the pathogenesis of pterygium and provide a promising target for adjuvant treatment of pterygium.
机译:在炎症被认为是至关重要的翼状胬肉进展和复发。潜在的分子机制并不好理解。角色的RNA结合蛋白人工抗原R(虚)负责炎症的影响翼状胬肉的发展。在翼状胬肉矩阵metallopeptidase-9 (MMP-9)和正常结膜被发现免疫组织化学和定量反转录聚合酶链反应(存在)。户珥(il - 1β)表达和细胞分布与免疫印迹和决定免疫荧光。(PTF)迁移决心与刮伤治疗试验和Transwell迁移试验。MMP-9生产中存在和决定明胶zymography。和RNP MMP-9被调查其次是rt - pcr和免疫沉淀反应(IP)信使核糖核酸(mRNA)稳定性分析。MMP-9表达式在翼状胬肉升高,尤其是进步的翼状胬肉与之相比正常结膜。表达和nucleus-cytoplasm户珥的航天飞机在培养ptf。影响il - 1β在PTF迁移和MMP-9生产。增加了它的稳定性。MMP-9通过转录后的调控户珥可能有助于稳定mRNA刺激炎症因子的影响il - 1β在翼状胬肉进展。翼状胬肉发病机理和提供一个有前途的辅助治疗的目标翼状胬肉。

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