Identification of B cell epitopes reactive to human papillomavirus type-16L1- derived peptides.

Abstract:

BACKGROUND:Persistent infection of human papillomavirus (HPV) types 16 and 18 causes cervical cancer. To better understand immune responses to the prophylactic vaccine, HPV 16/18 L1 virus-like particles (HPV-VLPs), we investigated B cell epitopes of HPV16 L1-derived peptides. METHODS:Sera from mice immunized with HPV-16/18 L1 VLPs were analyzed for their IgG titers against 10 different HPV16 L1-derived peptides (20-mer) that contain human leukocyte antigen (HLA)-class I A-2, A-24 and class II DR. RESULTS:One 20-mer peptide at positions 300 to 319 was identified as a common B cell epitope in both Balb/c (H-2d) and C57BL/6 (H-2b) mice. Mapping analysis showed that the 10-amino-acid sequence at positions 304 to 313 was an immunogenic portion. It is of note that the binding capability of this 10-mer peptide to the HLA-A2 and HLA-A24 molecules was confirmed by the HLA class I stabilization assay. In addition, one unique 20-mer was determined as a B cell epitope in each strain. CONCLUSIONS:These results might provide new information for better understanding of immune responses to HPV 16 L1.

journal_name

Virol J

journal_title

Virology journal

authors

Fukui A,Matsueda S,Kawano K,Tsuda N,Komatsu N,Shichijo S,Sasada T,Hattori S,Ushijima K,Itoh K,Kamura T

doi

10.1186/1743-422X-9-199

subject

Has Abstract

pub_date

2012-09-14 00:00:00

pages

199

issn

1743-422X

pii

1743-422X-9-199

journal_volume

9

pub_type

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