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@ARTICLE{Minopoli:888501,
author = {Minopoli, Antonio and Della Ventura, Bartolomeo and Lenyk,
Bohdan and Gentile, Francesco and Tanner, Julian A. and
Offenhäusser, Andreas and Mayer, Dirk and Velotta,
Raffaele},
title = {{U}ltrasensitive antibody-aptamer plasmonic biosensor for
malaria biomarker detection in whole blood},
journal = {Nature Communications},
volume = {11},
number = {1},
issn = {2041-1723},
address = {[London]},
publisher = {Nature Publishing Group UK},
reportid = {FZJ-2020-04965},
pages = {6134},
year = {2020},
abstract = {Development of plasmonic biosensors combining reliability
and ease of use is still a challenge. Gold nanoparticle
arrays made by block copolymer micelle nanolithography
(BCMN) stand out for their scalability, cost-effectiveness
and tunable plasmonic properties, making them ideal
substrates for fluorescence enhancement. Here, we describe a
plasmon-enhanced fluorescence immunosensor for the specific
and ultrasensitive detection of Plasmodium falciparum
lactate dehydrogenase (PfLDH)—a malaria marker—in whole
blood. Analyte recognition is realized by oriented
antibodies immobilized in a close-packed configuration via
the photochemical immobilization technique (PIT), with a top
bioreceptor of nucleic acid aptamers recognizing a different
surface of PfLDH in a sandwich conformation. The combination
of BCMN and PIT enabled maximum control over the
nanoparticle size and lattice constant as well as the
distance of the fluorophore from the sensing surface. The
device achieved a limit of detection smaller than 1 pg/mL
(<30 fM) with very high specificity without any sample
pretreatment. This limit of detection is several orders of
magnitude lower than that found in malaria rapid diagnostic
tests or even commercial ELISA kits. Thanks to its overall
dimensions, ease of use and high-throughput analysis, the
device can be used as a substrate in automated multi-well
plate readers and improve the efficiency of conventional
fluorescence immunoassays.},
cin = {IBI-3},
ddc = {500},
cid = {I:(DE-Juel1)IBI-3-20200312},
pnm = {523 - Controlling Configuration-Based Phenomena (POF3-523)},
pid = {G:(DE-HGF)POF3-523},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33262332},
UT = {WOS:000598899800001},
doi = {10.1038/s41467-020-19755-0},
url = {https://juser.fz-juelich.de/record/888501},
}