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Circular RNA VMA21 protects against intervertebral disc degeneration through targeting miR-200c and X linked inhibitor-of-apoptosis protein
Annals of the Rheumatic Diseases ( IF 20.3 ) Pub Date : 2018-01-17 , DOI: 10.1136/annrheumdis-2017-212056
Xiaofei Cheng , Liang Zhang , Kai Zhang , Guoying Zhang , Ying Hu , Xiaojiang Sun , Changqing Zhao , Hua Li , Yan Michael Li , Jie Zhao

Objectives Circular RNAs (circRNAs) have been proven to function as competing endogenous RNAs to interact with microRNAs (miRNAs) and influence the expression of miRNA target mRNAs. In this study, we investigated whether circRNAs could act as competing endogenous RNAs to regulate the pathological process of intervertebral disc degeneration (IVDD). Methods The role and mechanism of a circRNA, circVMA21, in IVDD were explored in nucleus pulposus (NP) cells and degenerative NP tissues from patients and rat models. The interaction between circVMA21 and miR-200c as well as the target mRNA, X linked inhibitor-of-apoptosis protein (XIAP), was examined. Results The decreased expression of XIAP in the inflammatory cytokines-treated NP cells and the degenerative NP tissues was directly associated with excessive apoptosis and imbalance between anabolic and catabolic factors of extracellular matrix. miR-200c regulated NP cell viability and functions through inhibiting XIAP. circVMA21 acted as a sponge of miR-200c and functioned in NP cells through targeting miR-200c and XIAP. Intradiscal injection of circVMA21 alleviated IVDD in the rat model. Conclusions CircVMA21 could alleviate inflammatory cytokines-induced NP cell apoptosis and imbalance between anabolism and catabolism of extracellular matrix through miR-200c-XIAP pathway. It provides a potentially effective therapeutic strategy for IVDD.

中文翻译:

环状 RNA VMA21 通过靶向 miR-200c 和 X 连锁凋亡抑制蛋白防止椎间盘退变

目的 环状 RNA (circRNA) 已被证明可作为竞争性内源 RNA 与微小 RNA (miRNA) 相互作用并影响 miRNA 靶标 mRNA 的表达。在这项研究中,我们研究了 circRNA 是否可以作为竞争性内源性 RNA 来调节椎间盘退变(IVDD)的病理过程。方法 在患者和大鼠模型的髓核 (NP) 细胞和退行性 NP 组织中探索 circRNA circVMA21 在 IVDD 中的作用和机制。检查了 circVMA21 和 miR-200c 以及目标 mRNA、X 连锁的凋亡抑制蛋白 (XIAP) 之间的相互作用。结果 炎性细胞因子处理的 NP 细胞和退行性 NP 组织中 XIAP 表达的降低与细胞外基质的过度凋亡和合成代谢和分解代谢因子之间的失衡直接相关。miR-200c 通过抑制 XIAP 调节 NP 细胞的活力和功能。circVMA21 充当 miR-200c 的海绵并通过靶向 miR-200c 和 XIAP 在 NP 细胞中起作用。circVMA21 椎间盘内注射减轻了大鼠模型中的 IVDD。结论 CircVMA21可通过miR-200c-XIAP通路缓解炎性细胞因子诱导的NP细胞凋亡及细胞外基质合成代谢失衡。它为 IVDD 提供了一种潜在有效的治疗策略。miR-200c 通过抑制 XIAP 调节 NP 细胞的活力和功能。circVMA21 充当 miR-200c 的海绵并通过靶向 miR-200c 和 XIAP 在 NP 细胞中起作用。circVMA21 椎间盘内注射减轻了大鼠模型中的 IVDD。结论 CircVMA21可通过miR-200c-XIAP通路缓解炎性细胞因子诱导的NP细胞凋亡及细胞外基质合成代谢失衡。它为 IVDD 提供了一种潜在有效的治疗策略。miR-200c 通过抑制 XIAP 调节 NP 细胞的活力和功能。circVMA21 充当 miR-200c 的海绵并通过靶向 miR-200c 和 XIAP 在 NP 细胞中起作用。circVMA21 椎间盘内注射减轻了大鼠模型中的 IVDD。结论 CircVMA21可通过miR-200c-XIAP通路缓解炎性细胞因子诱导的NP细胞凋亡及细胞外基质合成代谢失衡。它为 IVDD 提供了一种潜在有效的治疗策略。结论 CircVMA21可通过miR-200c-XIAP通路缓解炎性细胞因子诱导的NP细胞凋亡及细胞外基质合成代谢失衡。它为 IVDD 提供了一种潜在有效的治疗策略。结论 CircVMA21可通过miR-200c-XIAP通路缓解炎性细胞因子诱导的NP细胞凋亡及细胞外基质合成代谢失衡。它为 IVDD 提供了一种潜在有效的治疗策略。
更新日期:2018-01-17
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