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Mol Immunol:外泌体长非编码RNA GAS5能够抑制Th1分化和促进Th2分化

2020-01-06 AlexYang MedSci原创

辅助T细胞(Th)1/2分化的不平衡参与了过敏性鼻炎(AR)的发展。最近的研究阐释了外泌体对Th1/Th2分化的调控功能。然而,外泌体中调节上述响应的关键调节因子仍旧不清楚。最近,有研究人员从AR患者的鼻粘液(AR-EXO)和卵清蛋白(OVA)刺激的鼻上皮细胞(OVVA-EXO)中分离了外泌体,并检测了长非编码RNA GAS5(LncGAS5)的表达。结果表明了LncGAS5在AR上皮样本、AR-

辅助T细胞(Th)1/2分化的不平衡参与了过敏性鼻炎(AR)的发展。最近的研究阐释了外泌体对Th1/Th2分化的调控功能。然而,外泌体中调节上述响应的关键调节因子仍旧不清楚。

最近,有研究人员从AR患者的鼻粘液(AR-EXO)和卵清蛋白(OVA)刺激的鼻上皮细胞(OVVA-EXO)中分离了外泌体,并检测了长非编码RNA GAS5(LncGAS5)的表达。结果表明了LncGAS5在AR上皮样本、AR-EXO和OVA-EXO中表达上调。AR-EXO和CD4+ T细胞的共孵育能够抑制Th1的分化和促进Th2的分化,且在AR-EXO中受LncGAS5介导。AR-EXO中的LncGAS5能够抑制EZH2的转录和表达,同样能够抑制T-bet在mRNA和蛋白水平的表达。功能获得和缺失试验表明了LncGAS5能够部分的通过下调T-bet和EZH2的表达来介导Th1/Th2的分化。

最后,研究人员指出,他们的发现阐释了AR上皮来源的外泌体中,LncGAS5是介导Th1/Th2的分化的关键的因子,为AR的治疗提供了一种可能的靶标。

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    2020-01-18 d830384
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    2020-01-09 许安
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