Publication Type Journal Article
Title Flexible ZnO-mAb nanoplatforms for selective peripheral blood mononuclear cell immobilization
Authors K. Sowri Babu Pedro F. Pinheiro Catia Marques Gonçalo C. Justino Suzana M. Andrade Marta M. Alves
Groups BioMol MPPM CSSE
Journal SCIENTIFIC REPORTS
Year 2020
Month September
Volume 10
Number 1
Pages
Abstract Cancer is the second cause of death worldwide. This devastating disease requires specific, fast, and affordable solutions to mitigate and reverse this trend. A step towards cancer-fighting lies in the isolation of natural killer (NK) cells, a set of innate immune cells, that can either be used as biomarkers of tumorigenesis or, after autologous transplantation, to fight aggressive metastatic cells. In order to specifically isolate NK cells (which express the surface NKp30 receptor) from peripheral blood mononuclear cells, a ZnO immunoaffinity-based platform was developed by electrodeposition of the metal oxide on a flexible indium tin oxide (ITO)-coated polyethylene terephthalate (PET) substrate. The resulting crystalline and well-aligned ZnO nanorods (NRs) proved their efficiency in immobilizing monoclonal anti-human NKp30 antibodies (mAb), obviating the need for additional procedures for mAb immobilization. The presence of NK cells on the peripheral blood mononuclear cell (PBMCs) fraction was evaluated by the response to their natural ligand (B7-H6) using an acridine orange (AO)-based assay. The successful selection of NK cells from PBMCs by our nanoplatform was assessed by the photoluminescent properties of AO. This easy and straightforward ZnO-mAb nanoplatform paves the way for the design of biosensors for clinic diagnosis, and, due to its inherent biocompatibility, for the initial selection of NK cells for autotransplantation immunotherapies.
DOI http://dx.doi.org/10.1038/s41598-020-72133-0
ISBN
Publisher NATURE RESEARCH
Book Title
ISSN 2045-2322
EISSN
Conference Name
Bibtex ID ISI:000573274900030
Observations
Back to Publications List