简介:天生的免疫系统认识到通过编码germline的模式识别受体(PRR)入侵病原体,它得到天生的抗菌剂和煽动性的回答并且开始适应免疫控制或消除感染。像使用费的受体(TLR)和retinoic酸可诱导的基因(RIG-I)我是关键天生的有免疫力的PRR并且被精致的机制紧调整响应外国侵略者保证有益的结果。尽管许多在文学的焦点在发炎的蛋白质管理者的学习上,microRNAs(miRNAs)作为煽动性的过程的某些特征的重要控制器出现了。几miRNAs被TLR和RIG-I激活作为TLR并且RIG-I发信号的反馈管理者在myeloid房间和行为导致。在这评论,我们包括地讨论miRNA网络怎么对TLR并且RIG-I在煽动性的回答的开始和结束发信号和他们的角色作出回应的最近的理解。增加的证据也显示编码病毒的miRNAs和细胞的miRNAs在病毒的复制有重要功能并且招待抗病毒的豁免。
简介:AbstractPhenuiviridae, a member of the Bunyavirales order, can lead to significant human morbidity and mortality. Various phenuiviruses target specific cellular proteins and have strategies to counteract the effects of type I interferon (IFN). Previous studies have shown that phenuiviruses infection inhibits the synthesis of type I IFNs, and viral nonstructural proteins (NSs) had been further identified as an IFN antagonist. This study found that the NSs proteins of Dabie bandavirus (DBV), Sandfly fever Sicilian virus (SFSV), and Uukuniemi virus (UUKV) can inhibit Sendai virus-induced activation of IFN-β promoter and phosphorylation of IFN regulatory factor 3 (IRF3). Moreover, detailed analysis revealed that the phenuivirus NSs protein could directly interact with retinoic acid inducible gene-I (RIG-I) and degrade it via a proteasome-dependent pathway. In short, this study demonstrate a novel mechanism of phenuiviruses to resist host antiviral immunity, which may help understand these pathogens and suggest novel therapeutic approaches.
简介:目的:研究岗藿抗感汤对流感患者临床症状及调节免疫的影响。方法:本研究选择流感患者60例,随机分为岗藿抗感汤组30例、磷酸奥司他韦胶囊组(可威)30例。通过使用岗藿抗感汤治疗流行性感冒,并对患者进行感冒症状分级量化评分及测定患者外周血RIG-I(IFN-α、IFN-β)、Th1/Th2(IFN-γ/IL-4)细胞比值表达,从而了解岗藿抗感汤在流行性感冒发生发展中如何参与调节免疫及对临床症状的影响,为指导临床治疗提供依据。结果:岗藿抗感汤组连续给药5d,可缩短患者退热时间,改善其感冒症状,升高RIG-I(IFN-α、IFN-β)(P〈0.05),也对增高的IFN-γ及IFN-γ/IL-4比值有降低作用(P〈0.05)。结论:岗藿抗感汤具有抑制流感病毒Th1细胞亚群优势反应的作用,同时可激活RIG-I诱导I型干扰素的产生,抑制流感病毒的复制。
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