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Production and characterization of monoclonal antibodies specific for major capsid VP1 protein of trichodysplasia spinulosa‐associated polyomavirus
Author(s) -
Khatun Hajera,
Yamaoka Yutaro,
Matsushima Yuki,
Matsunaga Satoko,
Kimura Hirokazu,
Ho Jonhan,
Shuda Masahiro,
Ryo Akihide
Publication year - 2018
Publication title -
microbiology and immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 70
eISSN - 1348-0421
pISSN - 0385-5600
DOI - 10.1111/1348-0421.12662
Subject(s) - epitope , monoclonal antibody , biology , capsid , virology , epitope mapping , antigen , antibody , immunofluorescence , conformational epitope , immunohistochemistry , microbiology and biotechnology , immunology , virus
ABSTRACT Trichodysplasia spinulosa‐associated polyomavirus (TSPyV), a newly identified polyomavirus, has been implicated as a causative agent of trychodysplasia spinulosa (TS), a rare proliferative skin disease in severely immunocompromised hosts. Diagnosis using mAbs is a promising tool with high specificity towards the specific antigen. However, thus far, no suitable mAbs for diagnosing TS disease have been identified. In this study, mAbs specific for VP1 of TSPyV were developed and characterized. Wheat germ cell‐free synthesized VP1 protein of TSPyV was used to immunize BALB/c mice to generate hybridomas. Screening of the resultant hybridoma clones resulted in selection of five strongly positive clones that produce mAbs that react with the TSPyV‐VP1 antigen. Epitope mapping and bioinformatic analysis showed that these mAbs recognized epitopes located within highly conserved C‐terminal region of all clinical isolates of TSPyV‐VP1. Further, all these mAbs were highly effective for immunofluorescence and immunoprecipitation analysis. Three of the five mAbs exhibited no cross‐reactivity with VP1 of other related polyomaviruses. In addition, one of our mAbs (#14) provided immunohistochemical staining of skin tissue of TS disease. It can be concluded that three of the mAbs in this panel of anti‐VP1 antibodies may provide a useful set of tools for studying TSPyV infection and making the specific diagnosis.