细胞外囊泡中的循环 microRNAs 作为青春期酒精诱导神经炎症的潜在生物标志物:性别差异。
Circulating MicroRNAs in Extracellular Vesicles as Potential Biomarkers of Alcohol-Induced Neuroinflammation in Adolescence: Gender Differences.
机构信息
Department of Molecular and Cellular Pathology of Alcohol, Príncipe Felipe Research Center, 46012 Valencia, Spain.
Emergency Department, University Hospital of Salamanca-IBSAL, 37007 Salamanca, Spain.
出版信息
Int J Mol Sci. 2020 Sep 14;21(18):6730. doi: 10.3390/ijms21186730.
Current studies evidence the role of miRNAs in extracellular vesicles (EVs) as key regulators of pathological processes, including neuroinflammation and neurodegeneration. As EVs can cross the blood-brain barrier, and EV miRNAs are very stable in peripheral circulation, we evaluated the potential gender differences in inflammatory-regulated miRNAs levels in human and murine plasma EVs derived from alcohol-intoxicated female and male adolescents, and whether these miRNAs could be used as biomarkers of neuroinflammation. We demonstrated that while alcohol intoxication lowers anti-inflammatory miRNA (mir-146a-5p, mir-21-5p, mir-182-5p) levels in plasma EVs from human and mice female adolescents, these EV miRNAs increased in males. In mice brain cortices, ethanol treatment lowers mir-146a-5p and mir-21-5p levels, while triggering a higher expression of inflammatory target genes (Traf6, Stat3, and Camk2a) in adolescent female mice. These results indicate, for the first time, that female and male adolescents differ as regards the ethanol effects associated with the inflammatory-related plasma miRNAs EVs profile, and suggest that female adolescents are more vulnerable than males to the inflammatory effects of binge alcohol drinking. These findings also support the view that circulating miRNAs in EVs could be useful biomarkers for screening ethanol-induced neuroinflammation and brain damage in adolescence.
目前的研究证据表明,miRNAs 在细胞外囊泡(EVs)中作为关键调节因子在病理过程中发挥作用,包括神经炎症和神经退行性变。由于 EVs 可以穿过血脑屏障,并且 EV miRNAs 在周围循环中非常稳定,我们评估了来自酒精中毒的女性和男性青少年的人类和鼠血浆 EV 中炎症调节 miRNAs 水平的潜在性别差异,以及这些 miRNAs 是否可以用作神经炎症的生物标志物。我们证明,虽然酒精中毒会降低女性青少年人类和鼠血浆 EV 中的抗炎性 miRNA(mir-146a-5p、mir-21-5p、mir-182-5p)水平,但这些 EV miRNAs 在男性中增加。在小鼠大脑皮质中,乙醇处理会降低 mir-146a-5p 和 mir-21-5p 的水平,同时在青春期雌性小鼠中触发炎症靶基因(Traf6、Stat3 和 Camk2a)的更高表达。这些结果首次表明,女性和男性青少年在与炎症相关的血浆 miRNAs EVs 谱相关的乙醇作用方面存在差异,并表明女性青少年比男性青少年更容易受到 binge 饮酒引起的炎症影响。这些发现还支持这样一种观点,即循环中的 miRNAs 在 EVs 中可能是筛查乙醇诱导的神经炎症和青少年大脑损伤的有用生物标志物。