为鉴定禽流感病毒(AIV)感染状态下的差异表达蛋白,本研究将H5N1亚型AIV感染组与对照组小鼠肺组织蛋白样品分别进行双向电泳分离,并采用ImageMaster 2D Platinum 6.0软件进行分析。在AIV感染72h后,共有9个表达差异显著的蛋白点(ratio〉2,p〈0.05),而且该蛋白在感染组均呈上调表达。将差异蛋白进行串联质谱分析,并对其中7个蛋白进行鉴定,包括:interferon-induced protein with tetratricopeptide repeats 3(IFIT-3)、ATP依赖的干扰素反应蛋白1(ADIR1)、γ干扰素诱导的p47鸟苷三磷酸酶(IRG)、T细胞受体a TA27、气味受体S86、胞苷单磷酸激酶2(Cmpk2)和肌球蛋白。将前3个蛋白基因采用荧光定量PCR方法进行mRNA水平的验证,所获得的结果与双向电泳结果一致。本研究为在蛋白质组水平进一步分析H5N1亚型AIV与宿主相互作用奠定了基础。
In this study, the differentially expressed proteins were investigated in H5N1 avian influenza virus (AIV) infected mice by two dimensional gel electrophoresis (2-DE). The lung tissue lysis from the AIV infected or control groups were extracted at 72 hours post-inoculation and separated by 2-DE. Nine protein spots were found to have notably differential expression between the 2 groups (ratio2, p0.05), up-regulated in the AIV infected mice. Seven of them were identified by MALDI-TOF/TOF, including ATP-dependent interferon response protein1 (ADIR1), interferon-induced protein with tetratricopeptide repeats 3 (IFIT-3), T cell receptor alpha TA27, Interferon-gamma-inducible p47 GTPase (IRG), Cytidine monophosphate kinase 2 (Cmpk2 protein), odorant receptor S86, myosin light chain 1/3. Moreover, the transcriptional levels of 3 genes (ADIR, IFIT-3, and IRG) were verified by real-time PCR, which was completely consistent with the proteomic analysis result. Our data could provide an insight into the AIV-host interactions.