MiR-874-3p通过向核素来抑制脂肪细胞中TNF-α诱导的炎症
1Department of Pediatrics, Jurong City People's Hospital, No. 66, Ersheng Road, Jurong, 212400, Jiangsu, China. xxx19820709@sohu.com.
Journal of molecular histology
|January 17, 2026
概括
在肥胖儿童中下调的MicroRNA-874-3p可以防止炎症. 它通过向核和抑制NF-kappaB信号传递来降低脂肪细胞中的瘤亡因子-α效应.
科学领域:
- 分子生物学分子生物学
- 生物化学 生物化学
- 细胞生物学 细胞生物学
背景情况:
- 微RNAs (miRNAs) 被研究为儿童早期肥胖的生物标志物.
- 在超重/肥胖儿童中,MiR-874-3p的调控下降,但其作用尚不清楚.
研究的目的:
- 阐明miR-874-3p在儿童肥胖症进展中的功能和机制.
- 为了研究miR-874-3p在瘤坏死因子-α (TNF-α) 诱导的脂肪细胞炎症中的作用.
主要方法:
- 使用人类辛普森-戈拉比-贝梅尔综合征 (SGBS) 脂肪细胞刺激TNF-α建立了体外细胞模型.
- 评估了细胞活力 (CCK-8测定),促炎性细胞因子 (ELISA),miR-874-3p表达 (RT-qPCR) 和蛋白质水平 (西式涂抹).
- 使用 luciferase 记者测定验证了 miR-874-3p 和核素 (NCL) 之间的相互作用.
主要成果:
- 过度表达miR-874-3p抵消了TNF-α诱导的细胞活力的抑制,并减少了促炎性细胞因子的产生.
- 核素 (NCL) 被确定为miR-874-3p的直接目标.
- miR-874-3p使NCL介导的核因子kappa B (NF-κB) 信号失活,NCL上调逆转了miR-874-3p过度表达的影响.
结论:
- 在SGBS脂肪细胞中,MiR-874-3p对TNF-α诱导的炎症起着保护作用.
- 该机制涉及NCL的下调和随后的NF-κB信号的失活.
- MiR-874-3p有可能成为儿童肥胖相关炎症的治疗点.
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