Quantum dots-based fluoroimmunoassay for anti-Zika virus IgG antibodies detection

Publication date: Available online 27 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Jéssika F.F. Ribeiro, Maria I.A. Pereira, Lara G. Assis, Paulo E. Cabral Filho, Beate S. Santos, Giovannia A.L. Pereira, Claudilene R. Chaves, Gubio S. Campos, Sílvia I. Sardi, Goreti Pereira, Adriana FontesAbstractZika virus (ZIKV) has been declared a public health emergency of international concern. ZIKV has been associated with some neurological disorders, and their long-term effects are not completely understood. The majority of the methods for ZIKV diagnosis are based on the detection of IgM antibodies, which are the first signs of immunological response. However, the detection of IgG antibodies can be an important approach for ZIKV past infection diagnosis, especially for pregnant women, helping the comprehension/treatment of this disease. There has been a growing interest in applying nanoparticles for the efficient ZIKV or antibodies detection. Quantum dots (QD) are unique fluorescent semiconductor nanoparticles, highly versatile for biological applications. In the present study, we explored the special QD optical properties to develop an immunofluorescence assay for anti-ZIKV IgG antibodies detection. Anti-IgG antibodies were successfully conjugated with QDs and applied in a fluorescence sensing nanoplatform. After optimization using IgG antibodies, the conjugates were employed to detect anti-ZIKV IgG antibodies in polystyrene microplates sensitize...
Source: Journal of Photochemistry and Photobiology B: Biology - Category: Speech-Language Pathology Source Type: research