Polydiacetylene/Anti-HBs Complexes for Visible and Fluorescent Detection of HepatitisB Surface Antigen on a Nitrocellulose Membrane

Jinkyu Roh, Su Yeon Lee, Sangho Park, Dong June Ahn

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9 Citations (Scopus)

Abstract

The immunochromatographic assay (ICA) using a nitrocellulose (NC) membrane offers several advantages. This technique is a rapid and straightforward method in contrast to other immunoassays. Polydiacetylene (PDA) vesicles have unique optical properties, displaying red color and red fluorescence at the same time. In this system, red-phase PDA vesicles are used as a fluorescent dye as well as a surface for immobilized hepatitisB surface antibody (HBsAb). PDA has a remarkable stability compared with other fluorescent dyes. In this study, the most suitable PDA/HBsAb complexes are introduced for detecting hepatitisB surface antigen (HBsAg). Then, the PDA/HBsAb complexes affixed antibody is attached to NC membrane, which has two lines to confirm detection of HBsAg. The main advantage of this system is that the detection of HBsAg can be observed in both visible and fluorescent images due to the optical properties of polydiacetylene. Detection of HBsAg is observed up to 0.1ngmL-1 by fluorescent analysis and confirmed by red line on the NC membrane up to 1ngmL-1 (HBsAg) using the naked eye. Consequently, these results show that PDA/HBsAb complexes were successfully applied to ICA for the diagnosis of hepatitisB.

Original languageEnglish
JournalChemistry - An Asian Journal
DOIs
Publication statusAccepted/In press - 2017

Keywords

  • Fluorescent biosensors
  • Hepatitis B virus
  • Immunochromatographic assays
  • Nano-complexes
  • Polydiacetylene

ASJC Scopus subject areas

  • Chemistry(all)

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