Fibronectin and asialoglyprotein receptor mediate hepatitis B surface antigen binding to the cell surface

Fibronectin and asialoglyprotein receptor mediate hepatitis B surface antigen binding to the cell surface
复制标题

纤连蛋白和去唾液酸蛋白受体介导乙型肝炎表面抗原与细胞表面的结合

DOI:
10.1007/s00705-010-0657-5
复制
发表时间:
2010-04
期刊:
Arch Virol
影响因子:
--
通讯作者:
杨静
杨静
中科院分区:
其他
文献类型:
--
作者:
杨静

文献摘要

参考文献

被引文献

相似文献

纤维连接蛋白和脱唾液酸糖蛋白受体(ASGPR)已被一些研究者确定为B型肝炎病毒(HBV)包膜蛋白的伴侣。由于纤连蛋白是ASGPR的天然配体,我们推测HBV可能通过纤连蛋白附着在肝细胞表面表达的ASGPR上。为了验证这一假设,我们首先通过免疫共沉淀证实ASGPR,纤连蛋白和HBsAg在HepG2.2.15细胞中相互结合,并通过GST下拉鉴定可能的结合结构域。此外,通过测量HBsAg与细胞的结合,我们发现ASGPR和纤连蛋白增强了HBsAg与HepG2细胞的结合能力,甚至增强了HBsAg与293T和CHO细胞的结合能力,这些细胞通常不结合HBV。总之,我们的研究结果表明,纤连蛋白和ASGPR介导HBsAg结合到细胞表面,这为这两种蛋白质在介导HBV结合到肝细胞中的潜在作用提供了进一步的证据。
Both fibronectin and the asialoglycoprotein receptor (ASGPR) have been identified by some investigators as partners for hepatitis B virus (HBV) envelope proteins. Because fibronectin is a natural ligand for ASGPR, we speculated that HBV might attach to ASGPR expressed on the hepatocyte surface via fibronectin. To test this hypothesis, we first confirmed by co-immunoprecipitation that ASGPR, fibronectin and HBsAg bind to each other in HepG2.2.15 cells, and possible binding domains were identified by GST pull-down. In addition, by measuring binding of HBsAg to cells, we found that ASGPR and fibronectin enhanced the binding capability of HBsAg to HepG2 cells, and even to 293T and CHO cells, which normally do not bind HBV. In conclusion, our findings suggest that both fibronectin and ASGPR mediate HBsAg binding to the cell surface, which provides further evidence for the potential roles of these two proteins in mediating HBV binding to liver cells.
纤连蛋白对于乙型肝炎病毒体外繁殖至关重要:可能是潜在的细胞靶点?
DOI: 10.1016/j.bbrc.2006.03.204
发表时间: 2006-06
期刊: Biochem Biophys Res Commun.
影响因子: --
作者:
Jing Yang;Xiaoran Ding;Shengqi Wang
通讯作者: Shengqi Wang
DOI: 10.1084/jem.176.6.1561
发表时间: 1992-12-01
期刊: The Journal of experimental medicine
影响因子: --
作者:
通讯作者: --
DOI: 10.1073/pnas.84.4.1005
发表时间: 1987-02-01
影响因子: 11.1
作者:
SELLS, MA;CHEN, ML;ACS, G
通讯作者: ACS, G
DOI: 10.1262/jrd.51.47
发表时间: 2005-02
期刊: The Journal of reproduction and development
影响因子: --
作者:
Masashi Takahashi;Misa Takahashi;S. Hamano;Hitomi Takahashi;A. Okano
通讯作者: Masashi Takahashi;Misa Takahashi;S. Hamano;Hitomi Takahashi;A. Okano
DOI: 10.1093/clinids/9.supplement_4.s404
发表时间: 1987-07
期刊: Reviews of infectious diseases
影响因子: --
作者:
J. Keski‐oja;A. Hautanen;I. Julkunen
通讯作者: J. Keski‐oja;A. Hautanen;I. Julkunen