Godi Anna, Facchetti Alessandra, Bissett Sara L, Cocuzza Clementina, Miller Elizabeth, Beddows Simon
Virus Reference Department, Public Health England, London, United Kingdom.
Virus Reference Department, Public Health England, London, United Kingdom Department of Surgery and Translational Medicine, University of Milan-Bicocca, Monza, Italy.
J Virol. 2015 Dec 30;90(6):3247-52. doi: 10.1128/JVI.02859-15.
We investigated naturally occurring variation within the major (L1) and minor (L2) capsid proteins of human papillomavirus genotype 45 (HPV45). Pseudoviruses (PsVs) representing HPV45 sublineages A1, A2, A3, B1, and B2 exhibited comparable particle-to-infectivity ratios and morphologies but demonstrated both increased (A2, A3, and B1) and decreased (B2) sensitivities to cross-neutralization by HPV vaccine antibodies compared to that of the A1 sublineage. Mutant PsVs identified HI loop residue 357 as being critical for conferring this differential sensitivity.
我们研究了人乳头瘤病毒45型(HPV45)主要衣壳蛋白(L1)和次要衣壳蛋白(L2)的自然发生变异。代表HPV45亚系A1、A2、A3、B1和B2的假病毒(PsV)表现出相当的颗粒感染率和形态,但与A1亚系相比,对HPV疫苗抗体交叉中和的敏感性既有增加(A2、A3和B1)的情况,也有降低(B2)的情况。突变假病毒确定HI环残基357是赋予这种差异敏感性的关键因素。