Luminol encapsulated liposome as a signal generator for the detection of specific antigen-antibody reactions and nucleotide hybridization

• Main Authors: Pakavadee Rakthong, Akarin Intaramat, Kavi Ratanabanangkoon
• Other Authors: Mahidol University
• Format: Article
• Published: 2018
• Subjects: Chemistry
• Online Access: https://repository.li.mahidol.ac.th/handle/123456789/28936

Liposomes prepared with biotinylated phospholipids and luminol entrapped were shown to be of 187 nm in size, 59% of which were unilamellar and with 43% luminol trapping efficiency. Liposome prepared from biotinylated phospholipids with a longer hydrophilic PEG2000 spacer, but not with the shorter hydrophobic caproyl one, bound efficiently and specifically with immobilized streptavidin in a microplate assay. The interactions of dinitrophenol and tobramycin with their respective antibodies, and the hybridization of 20-mers oligonucleotides were studied using the liposome as a signal generator. These reactions were shown to be specific with limits of detection of 0.58 μM, 0.96 μM and 18 nM, respectively. 2010 © The Japan Society for Analytical Chemistry.