Identification of novel viral receptors with cell line expressing viral receptor-binding protein.

Identification of novel viral receptors with cell line expressing viral receptor-binding protein.
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用表达病毒受体结合蛋白的细胞系鉴定新型病毒受体

DOI:
10.1038/srep07935
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发表时间:
2015-01-21
期刊:
影响因子:
4.6
通讯作者:
Shao H
Shao H
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Mei M;Ye J;Qin A;Wang L;Hu X;Qian K;Shao H

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病毒细胞受体和感染可以通过病毒受体结合蛋白的表达来阻断。因此,病毒细胞受体是抗病毒策略的有吸引力的靶点,并且病毒细胞受体的鉴定对于更好地理解和控制病毒性疾病至关重要。禽肉瘤/白血病病毒(ASLV,包括A-J 10个亚群)作为病毒进入和抗逆转录病毒治疗的模型系统,已经得到了广泛的研究,并取得了许多里程碑式的发现。在这里,我们使用DF 1细胞系表达的病毒受体结合蛋白,以有效地确定鸡膜联蛋白A2(chANXA 2)作为一种新的受体逆转录病毒ALV-J(禽白血病病毒J亚群)。我们的数据表明,针对chANXA 2的抗体或siRNA显著抑制ALV-J感染,并且chANXA 2的复制和过表达允许ALV-J进入其不允许的细胞。我们的研究结果不仅将chANXA 2鉴定为抗ALV-J的新型生物标志物,而且还证明表达病毒受体结合蛋白的细胞系可以作为分离功能性受体以鉴定新型抗病毒靶点的有效工具。
The viral cell receptors and infection can be blocked by the expression of the viral receptor-binding protein. Thus, the viral cell receptor is an attractive target for anti-viral strategies and the identification of viral cell receptor is critical for better understanding and controlling viral disease. As a model system for viral entry and anti-retroviral approaches, avian sarcoma/leukosis virus (ASLV, including the A-J ten subgroups) has been studied intensively and many milestone discoveries have been achieved based on work with ASLV. Here, we used a DF1 cell line expressed viral receptor-binding protein to efficiently identify chicken Annexin A2 (chANXA2) as a novel receptor for retrovirus ALV-J (avian leukosis virus subgroup J). Our data demonstrate that antibodies or siRNA to chANXA2 significantly inhibited ALV-J infection and replication and over-expression of chANXA2 permitted the entry of ALV-J into its non-permissible cells. Our findings have not only identified chANXA2 as a novel biomarker for anti-ALV-J, but also demonstrated that cell lines with the expression of viral receptor-binding protein could be as efficient tools for isolating functional receptors to identify novel anti-viral targets.
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