2018
Cyclopropylamine plasma polymer surfaces for label-free SPR and QCM immunosensing of Salmonella
MAKHNEVA, Ekaterina, Zdeněk FARKA, Petr SKLÁDAL a Lenka ZAJÍČKOVÁZákladní údaje
Originální název
Cyclopropylamine plasma polymer surfaces for label-free SPR and QCM immunosensing of Salmonella
Autoři
MAKHNEVA, Ekaterina (643 Rusko, domácí), Zdeněk FARKA (203 Česká republika, domácí), Petr SKLÁDAL (203 Česká republika, domácí) a Lenka ZAJÍČKOVÁ (203 Česká republika, garant, domácí)
Vydání
Sensors and Actuators B: Chemical, Amsterdam, Elsevier B.V. 2018, 0925-4005
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10406 Analytical chemistry
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 6.393
Kód RIV
RIV/00216224:14740/18:00101169
Organizační jednotka
Středoevropský technologický institut
UT WoS
000444637600056
Klíčová slova anglicky
Plasma polymerization; Amine films; Surface plasmon resonance; Quartz crystal microbalance; Immunosensor; Label-free detection
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 23. 4. 2019 09:00, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
We report on the first successful application of nitrogen-containing functional surfaces prepared by plasma polymerization in surface plasmon resonance (SPR) immunosensing. The plasma polymers (PPs) were deposited from cyclopropylamine (CPA) vapors onto gold surfaces of SPR and quartz crystal microbalance (QCM) sensors. It provided an excellent platform for a stable immobilization of antibodies using glutaraldehyde (GA) activation. The performance of the SPR immunosensor was proven by a model pair of monoclonal antibody (Ab) AL-01 and human serum albumin as well as by the selective detection of bacterial pathogen Salmonella Typhimurium using the immobilized anti-Salmonella Ab. A baseline drift of the measured SPR signal, caused by the long-term reactivity of CPA plasma polymers, was well stabilized by 18 h immersion in phosphate buffered saline prior to the GA activation. The immunosensors can be successfully regenerated several times using 10 mM NaOH. The limit of detection of 10^5 CFU/mL and a wide linear response were achieved for Salmonella. The assay parameters are comparable to the conventional label-free methods. However, the replacement of conventional immobilization matrix with the CPA PPs offers an advantage of excellent adhesion to gold QCM and SPR surfaces achieved by fast and eco-friendly procedure compatible with the vacuum deposition of gold.
Návaznosti
GA18-12774S, projekt VaV |
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LM2015043, projekt VaV |
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LQ1601, projekt VaV |
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