在一项新的研究中,来自美国国家卫生研究院(NIH)等多家机构的研究人员取得三项突破。他们发现HIV的一个新的可被疫苗攻击的脆弱位点、一种结合这个靶位点的广泛中和抗体,以及这种抗体如何阻止这种病毒感染细胞。相关研究结果发表在2016年5月13日那期Science期刊上,论文标题为“Fusion peptide of HIV-1 as a site of vulnerability to neutralizing antibody”。
Fusion peptide of HIV-1 as a site of vulnerability to neutralizing antibody
ABSTRACT The HIV-1 fusion peptide, comprising 15 to 20 hydrophobic residues at the N terminus of the Env-gp41 subunit, is a critical component of the virus-cell entry machinery. Here, we report the identification of a neutralizing antibody, N123-VRC34.01, which targets the fusion peptide and blocks viral entry by inhibiting conformational changes in gp120 and gp41 subunits of Env required for entry. Crystal structures of N123-VRC34.01 liganded to the fusion peptide, and to the full Env trimer, revealed an epitope consisting of the N-terminal eight residues of the gp41 fusion peptide and glycan N88 of gp120, and molecular dynamics showed that the N-terminal portion of the fusion peptide can be solvent-exposed. These results reveal the fusion peptide to be a neutralizing antibody epitope and thus a target for vaccine design.
原文链接:http://science.sciencemag.org/content/352/6287/828
专业病毒学相关领域学术交流平台“中国病毒学论坛QQ群:15898015”
来源:生物谷 作者: hantavirus 时间: 2016-8-17 13:43
期待疫苗早日开发成功!