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Title: In-situ synthesized V2CTx MXene-based immune tag for the electrochemical detection of Interleukin 6 (IL-6) from breast cancer cells
Award ID(s):
1805514
PAR ID:
10430231
Author(s) / Creator(s):
; ; ; ;
Date Published:
Journal Name:
Biosensors and Bioelectronics
Volume:
237
Issue:
C
ISSN:
0956-5663
Page Range / eLocation ID:
115512
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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  1. Abstract

    The aim of this study was to develop a high‐performance liquid chromatography–tandem mass spectrometry method for the determination of 6‐cyanodopamine, 6‐nitrodopamine, 6‐nitrodopa, 6‐nitroadrenaline and 6‐bromodopamine in human plasma samples. Strata‐X 33 μm solid‐phase extraction cartridges were used for the extraction of the catecholamines from human plasma samples. The catecholamines were separated in a 150 × 3 mm Shim‐pack GIST C18‐AQ column with 3 μm particle size, placed in an oven at 40°C and perfused with 82% mobile phase A (acetonitrile–H2O; 90:10, v/v) + 0.4% acetic acid and 18% mobile phase B (deionized H2O) + 0.2% formic acid at a flow rate of 340 μl/min in isocratic mode. The injected volume was 4 μl and the run lasted 4 min. The method was linear from 0.1 to 20 ng/ml and the lower limit of quantification was 0.1 ng/ml for all analytes. The method was applied to evaluate the plasma levels of catecholamines in plasma of patients with chronic kidney disease and allowed the detection for the first time of circulating levels of the novel catecholamines 6‐bromodopamine and 6‐cyanodopamine.

     
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