根据GenBank中鸭IFN-α基因（GenBank登录号：JF894229）序列设计并合成引物,并以鸭β-actin基因（GenBank登录号：GU564232）为内参,采用SYBR Green I染料法,建立检测鸭IFN-αmRNA的实时荧光定量Real-time PCR方法（RT-PCR）。将IFN-...根据GenBank中鸭IFN-α基因（GenBank登录号：JF894229）序列设计并合成引物,并以鸭β-actin基因（GenBank登录号：GU564232）为内参,采用SYBR Green I染料法,建立检测鸭IFN-αmRNA的实时荧光定量Real-time PCR方法（RT-PCR）。将IFN-α和β-actin基因分别克隆至pMD18-T载体上,鉴定出阳性重组质粒为标准品（p-IFN-α和p-β-actin）,分别建立番鸭IFN-α和β-actin实时荧光定量RT-PCR方法。结果表明,Ct值在13.27~27.54与11.86~25.32范围内呈现良好的线性关系,相关系数均大于0.99（r〉0.99）,扩增产物的熔解曲线分析均各自只出现1个特异性单峰,无引物二聚体,Tm值分别为（93.6±0.26）℃和（85.3±0.15）℃,最低检测限分别为9.37×102copies/μL和3.71×101copies/μL,检测周期从样品的处理到荧光定量PCR结束仅需4 h左右。本研究建立的鸭IFN-α基因实时荧光定量PCR灵敏度高、特异性强、检测周期短,为番鸭IFN-αmRNA的定量分析奠定了基础。展开更多
To investigate the expression of plasmacytoid dendritic cells （pDCs）, interferon regulatory factor-7 （IRF-7） and interferon alpha （IFN- α ） mRNA in skin lesions of patients with psoriasis vulgaris, the expressi...To investigate the expression of plasmacytoid dendritic cells （pDCs）, interferon regulatory factor-7 （IRF-7） and interferon alpha （IFN- α ） mRNA in skin lesions of patients with psoriasis vulgaris, the expressions of plasmacytoid dendritic cells, IRF-7, IFN-α mRNA in the lesional skin of psoriasis vulgaris were detected by immunohistochemical technique （SP） and RT-PCR. Normal skin of healthy volunteers, serving as control, was also tested. The immunohistochemical study showed that the expression of pDCs in the psoriatic lesions was significantly higher than that in the normal controls. RT-PCR showed that the mRNA expression of IRF-7 was much higher than that in normal controls, but no difference in the expression of IFN-α mRNA was found between two groups. Our findings indicate that up-regulated expression of pDCs, IRF-7mRNA might be involved in the pathogenesis of psoriasis.展开更多
文摘根据GenBank中鸭IFN-α基因（GenBank登录号：JF894229）序列设计并合成引物,并以鸭β-actin基因（GenBank登录号：GU564232）为内参,采用SYBR Green I染料法,建立检测鸭IFN-αmRNA的实时荧光定量Real-time PCR方法（RT-PCR）。将IFN-α和β-actin基因分别克隆至pMD18-T载体上,鉴定出阳性重组质粒为标准品（p-IFN-α和p-β-actin）,分别建立番鸭IFN-α和β-actin实时荧光定量RT-PCR方法。结果表明,Ct值在13.27~27.54与11.86~25.32范围内呈现良好的线性关系,相关系数均大于0.99（r〉0.99）,扩增产物的熔解曲线分析均各自只出现1个特异性单峰,无引物二聚体,Tm值分别为（93.6±0.26）℃和（85.3±0.15）℃,最低检测限分别为9.37×102copies/μL和3.71×101copies/μL,检测周期从样品的处理到荧光定量PCR结束仅需4 h左右。本研究建立的鸭IFN-α基因实时荧光定量PCR灵敏度高、特异性强、检测周期短,为番鸭IFN-αmRNA的定量分析奠定了基础。
文摘To investigate the expression of plasmacytoid dendritic cells （pDCs）, interferon regulatory factor-7 （IRF-7） and interferon alpha （IFN- α ） mRNA in skin lesions of patients with psoriasis vulgaris, the expressions of plasmacytoid dendritic cells, IRF-7, IFN-α mRNA in the lesional skin of psoriasis vulgaris were detected by immunohistochemical technique （SP） and RT-PCR. Normal skin of healthy volunteers, serving as control, was also tested. The immunohistochemical study showed that the expression of pDCs in the psoriatic lesions was significantly higher than that in the normal controls. RT-PCR showed that the mRNA expression of IRF-7 was much higher than that in normal controls, but no difference in the expression of IFN-α mRNA was found between two groups. Our findings indicate that up-regulated expression of pDCs, IRF-7mRNA might be involved in the pathogenesis of psoriasis.
