scholarly journals High throughput Surface Plasmon Resonance imaging method for clinical detection of presence and strength of binding of IgM, IgG and IgA antibodies against SARS-CoV-2 during CoViD-19 infection

MethodsX ◽  
2021 ◽  
pp. 101432
Author(s):  
Richard B.M. Schasfoort ◽  
Jos van Weperen ◽  
Margot van Amsterdam ◽  
Judicaël Parisot ◽  
Jan Hendriks ◽  
...  
Toxins ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 280
Author(s):  
Bin Wang ◽  
Bosoon Park ◽  
Jing Chen ◽  
Xiaohua He

Shiga toxin-producing Escherichia coli (STEC) are responsible for gastrointestinal diseases reported in numerous outbreaks around the world as well as in the United States. Current detection methods have limitation to implement for rapid field-deployable detection with high volume of samples that are needed for regulatory purposes. Surface plasmon resonance imaging (SPRi) has proved to achieve rapid and label-free screening of multiple pathogens simultaneously, so it was evaluated in this work for the detection of Shiga toxins (Stx1a and Stx2a toxoids were used as the less toxic alternatives to Stx1 and Stx2, respectively). Multiple antibodies (Stx1pAb, Stx1-1mAb, Stx1-2mAb, Stx1d-3mAb, Stx1e-4mAb, Stx2pAb, Stx2-1mAb, Stx2-2mAb, and Stx2-10mAb) were spotted one by one by programed microarrayer, on the same high-throughput biochip with 50-nm gold film through multiple crosslinking and blocking steps to improve the orientation of antibodies on the biochip surface. Shiga toxins were detected based on the SPRi signal difference (ΔR) between immobilized testing antibodies and immunoglobulin G (IgG) control. Among the antibodies tested, Stx1pAb showed the highest sensitivity for Stx1 toxoid, with the limit of detection (LOD) of 50 ng/mL and detection time of 20 min. Both Stx2-1mAb and Stx2-2mAb exhibited high sensitivity for Stx2 toxoid. Furthermore, gold nanoparticles (GNPs) were used to amplify the SPRi signals of monoclonal antibodies in a sandwich platform. The LOD reached the level of picogram (pg)/mL with the help of GNP-antibody conjugate. This result proved that SPRi biochip with selected antibodies has the potential for rapid, high-throughput and multiplex detection of Shiga toxins.


2014 ◽  
Vol 53 (26) ◽  
pp. 6037 ◽  
Author(s):  
Pengfei Zhang ◽  
Le Liu ◽  
Yonghong He ◽  
Zhiyuan Shen ◽  
Jun Guo ◽  
...  

RSC Advances ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 3213-3218 ◽  
Author(s):  
Vikramjeet Singh ◽  
Zhuo Li ◽  
Xiaotong Zhou ◽  
Xiaonan Xu ◽  
Jianghui Xu ◽  
...  

A high-throughput methodology for the measurement of drug–CD kinetic rate constants.


2007 ◽  
Vol 79 (2) ◽  
pp. 702-709 ◽  
Author(s):  
Daniel Boecker ◽  
Alexander Zybin ◽  
Vlasta Horvatic ◽  
Christian Grunwald ◽  
Kay Niemax

2017 ◽  
Vol 114 (35) ◽  
pp. E7245-E7254 ◽  
Author(s):  
Shuai Zhao ◽  
Mo Yang ◽  
Wenfei Zhou ◽  
Baichao Zhang ◽  
Zhiqiang Cheng ◽  
...  

Chemical modifications on histones and DNA/RNA constitute a fundamental mechanism for epigenetic regulation. These modifications often function as docking marks to recruit or stabilize cognate “reader” proteins. So far, a platform for quantitative and high-throughput profiling of the epigenetic interactome is urgently needed but still lacking. Here, we report a 3D-carbene chip-based surface plasmon resonance imaging (SPRi) technology for this purpose. The 3D-carbene chip is suitable for immobilizing versatile biomolecules (e.g., peptides, antibody, DNA/RNA) and features low nonspecific binding, random yet function-retaining immobilization, and robustness for reuses. We systematically profiled binding kinetics of 1,000 histone “reader–mark” pairs on a single 3D-carbene chip and validated two recognition events by calorimetric and structural studies. Notably, a discovery on H3K4me3 recognition by the DNA mismatch repair protein MSH6 in Capsella rubella suggests a mechanism of H3K4me3-mediated DNA damage repair in plant.


RSC Advances ◽  
2016 ◽  
Vol 6 (26) ◽  
pp. 21900-21906 ◽  
Author(s):  
Xiao Wang ◽  
Jiying Xu ◽  
Chanjuan Liu ◽  
Yi Chen

A surface plasmon resonance imaging method to differentiate the interaction between the protein human high mobility group box 1 or human nuclear protein positive cofactor 4 (PC4) and DNAs has been developed.


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