An approach for an immunoaffinity AIDS sensor using the conservative region of the HIV envelope protein (gp41) and its monoclonal antibody

Taizo Uda, Emi Hifumi, Toshiaki Kobayashi, Kosuke Shimizu, Tetsutaro Sata, Keiki Ogino

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A monoclonal antibody for the conservative region of gp41, which is one of the HIV envelope proteins, was produced. The antigen determining site of gp41 was examined using the epitope mapping technique, followed by an enzyme linked immunosorbent assay. Some peptides had comparable affinities for the mococlonal antibody, but the peptide EGIEE, having a slighty weaker immunoaffinity than gp41, was the most preferable for the construction of an immunoaffinity AIDS sensor. For the detection of gp41, EGIEE was labelled with catalase and used as a mimic antigen; it was bound to the antibody present on an immuno-membrane and, due to the replacement reaction of the mimic antigen by gp41, indirect quantitative measurement of gp41 was possible using an oxygen electrode. Anti-gp41 antibody was also detected using a mimic antibody, which was chemically modified with polyethylene glycol. An immunoaffinity AIDS sensor was constructed using the mimic molecules which were tailored to have a suitable immunoaffinity for HIV antigen and/or antibody.

Original languageEnglish
Pages (from-to)477-483
Number of pages7
JournalBiosensors and Bioelectronics
Volume10
Issue number5
DOIs
Publication statusPublished - 1995

Keywords

  • AIDS sensor
  • HIV
  • gp41
  • monoclonal antibody
  • peptide

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Biomedical Engineering
  • Electrochemistry

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