Tunable GUMBOS-based sensor array for label-free detection and discrimination of proteins

2016 ◽  
Vol 4 (8) ◽  
pp. 1414-1422 ◽  
Author(s):  
Waduge Indika S. Galpothdeniya ◽  
Frank R. Fronczek ◽  
Mingyan Cong ◽  
Nimisha Bhattarai ◽  
Noureen Siraj ◽  
...  
Keyword(s):  
Sensor Array ◽  
Label Free ◽  
Organic Salts ◽  
Label Free Detection

We report a sensor array approach, based on a novel group of 6-(p-toluidino)-2-naphthalenesulfonate (TNS)-based organic salts, for sensitive and label-free sensing of proteins.

Label-free detection and discrimination of poly-brominated diphenylethers using molecularly imprinted photonic cross-reactive sensor arrays

2014 ◽  
Vol 50 (91) ◽  
pp. 14133-14136 ◽  
Author(s):  
Dan Xu ◽  
Wei Zhu ◽  
Chen Wang ◽  
Tian Tian ◽  
Jian Li ◽  
...  
Keyword(s):  
Sensor Array ◽  
Sensor Arrays ◽  
Label Free ◽  
Molecularly Imprinted ◽  
Label Free Detection

Molecularly imprinted photonic polymers were used as sensing elements for efficiently creating a cross-reactive sensor array, as well as the sensitive and label-free detection of trace PBDEs was realized.

scholarly journals Rapid label-free detection of E. coli using antimicrobial peptide assisted impedance spectroscopy

2015 ◽  
Vol 7 (23) ◽  
pp. 9744-9748 ◽  
Author(s):  
Keren Jiang ◽  
Hashem Etayash ◽  
Sarfuddin Azmi ◽  
Selvaraj Naicker ◽  
Mahtab Hassanpourfard ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Impedance Spectroscopy ◽  
Antimicrobial Peptide ◽  
Rapid Detection ◽  
Sensor Array ◽  
Label Free ◽  
E Coli ◽  
Sensor Platform ◽  
Label Free Detection

A compact, label-free sensor array for rapid detection ofEscherichia coli(E. coli) using antimicrobial peptide assisted impedimetric sensor platform.

Label-free detection of β-amyloid peptides (Aβ40 and Aβ42): a colorimetric sensor array for plasma monitoring of Alzheimer's disease

Nanoscale ◽  
2018 ◽  
Vol 10 (14) ◽  
pp. 6361-6368 ◽  
Author(s):  
Forough Ghasemi ◽  
M. Reza Hormozi-Nezhad ◽  
Morteza Mahmoudi
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Sensor Array ◽  
Colorimetric Sensor ◽  
Label Free ◽  
Aβ Peptides ◽  
Amyloid Peptides ◽  
Colorimetric Sensor Array ◽  
Label Free Detection ◽  
Β Amyloid

A nanoparticle-based colorimetric sensor array for identification of structurally similar Aβ peptides (Aβ40 and Aβ42) for monitoring of Alzheimer's disease at early stages.

scholarly journals The Role of Surface Chemistry in the Efficacy of Protein and DNA Microarrays for Label-Free Detection: An Overview

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1026
Author(s):  
Elisa Chiodi ◽  
Allison M. Marn ◽  
Matthew T. Geib ◽  
M. Selim Ünlü
Keyword(s):  
Surface Chemistry ◽  
Surface Functionalization ◽  
Dna Microarrays ◽  
Label Free ◽  
Polymeric Coatings ◽  
Label Free Detection ◽  
Particle Imaging ◽  
Single Particle Imaging ◽  
The Impact

The importance of microarrays in diagnostics and medicine has drastically increased in the last few years. Nevertheless, the efficiency of a microarray-based assay intrinsically depends on the density and functionality of the biorecognition elements immobilized onto each sensor spot. Recently, researchers have put effort into developing new functionalization strategies and technologies which provide efficient immobilization and stability of any sort of molecule. Here, we present an overview of the most widely used methods of surface functionalization of microarray substrates, as well as the most recent advances in the field, and compare their performance in terms of optimal immobilization of the bioreceptor molecules. We focus on label-free microarrays and, in particular, we aim to describe the impact of surface chemistry on two types of microarray-based sensors: microarrays for single particle imaging and for label-free measurements of binding kinetics. Both protein and DNA microarrays are taken into consideration, and the effect of different polymeric coatings on the molecules’ functionalities is critically analyzed.

scholarly journals Label-Free Electrochemical Sensor for Rapid Bacterial Pathogen Detection Using Vancomycin-Modified Highly Branched Polymers

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1872
Author(s):  
Holger Schulze ◽  
Harry Wilson ◽  
Ines Cara ◽  
Steven Carter ◽  
Edward N. Dyson ◽  
...  
Keyword(s):  
Pathogen Detection ◽  
Electrochemical Impedance ◽  
Point Of Care ◽  
Branched Polymers ◽  
Label Free ◽  
Conformation Change ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Staphylococcus Carnosus ◽  
Label Free Detection

Rapid point of care tests for bacterial infection diagnosis are of great importance to reduce the misuse of antibiotics and burden of antimicrobial resistance. Here, we have successfully combined a new class of non-biological binder molecules with electrochemical impedance spectroscopy (EIS)-based sensor detection for direct, label-free detection of Gram-positive bacteria making use of the specific coil-to-globule conformation change of the vancomycin-modified highly branched polymers immobilized on the surface of gold screen-printed electrodes upon binding to Gram-positive bacteria. Staphylococcus carnosus was detected after just 20 min incubation of the sample solution with the polymer-functionalized electrodes. The polymer conformation change was quantified with two simple 1 min EIS tests before and after incubation with the sample. Tests revealed a concentration dependent signal change within an OD600 range of Staphylococcus carnosus from 0.002 to 0.1 and a clear discrimination between Gram-positive Staphylococcus carnosus and Gram-negative Escherichia coli bacteria. This exhibits a clear advancement in terms of simplified test complexity compared to existing bacteria detection tests. In addition, the polymer-functionalized electrodes showed good storage and operational stability.

H2O2-sensitive quantum dots for the label-free detection of glucose

Talanta ◽  
2010 ◽  
Vol 82 (3) ◽  
pp. 997-1002 ◽  
Author(s):  
Mei Hu ◽  
Jing Tian ◽  
Hao-Ting Lu ◽  
Li-Xing Weng ◽  
Lian-Hui Wang
Keyword(s):  
Quantum Dots ◽  
Label Free ◽  
Label Free Detection
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