Rapid Evaluation of Antibacterial Carbohydrates on a Microfluidic Chip Integrated with the Impedimetric Neoglycoprotein Biosensor.
Haijie JiXueqiong YangHang ZhouFeiyun CuiQin ZhouPublished in: Biosensors (2023)
The colonization of some bacteria to their host cell is mediated by selective adhesion between adhesin and glycan. The evaluation of antiadhesive carbohydrates in vitro has great significance in discovering new antibacterial drugs. In this paper, a microfluidic chip integrated with impedimetric neoglycoprotein biosensors was developed to evaluate the antibacterial effect of carbohydrates. Mannosylated bovine serum albumin (Man-BSA) was taken as the neoglycoprotein and immobilized on the microelectrode-modified gold nanoparticles (Au NPs) to form a bionic glycoprotein nanosensing surface (Man-BSA/Au NPs). Salmonella typhimurium ( S. typhimurium ) was selected as a bacteria model owing to its selective adhesion to the mannose. Electrochemical impedance spectroscopy (EIS) was used to characterize the adhesion capacity of S. typhimurium to the Man-BSA/Au NPs and evaluate the antiadhesive efficacy of nine different carbohydrates. It was illustrated that the 4-methoxyphenyl-α-D-pyran mannoside (Phenyl-Man) and mannan peptide (Mannatide) showed excellent antiadhesive efficacy, with IC 50 values of 0.086 mM and 0.094 mM, respectively. The microfluidic device developed in this study can be tested in multiple channels. Compared with traditional methods for evaluating the antibacterial drug in vitro, it has the advantages of being fast, convenient, and cost-effective.
Keyphrases
- label free
- gold nanoparticles
- circulating tumor cells
- high throughput
- reduced graphene oxide
- single cell
- listeria monocytogenes
- sensitive detection
- silver nanoparticles
- biofilm formation
- anti inflammatory
- escherichia coli
- essential oil
- wound healing
- oxide nanoparticles
- high resolution
- ionic liquid
- pseudomonas aeruginosa
- quantum dots
- cell therapy
- staphylococcus aureus
- single molecule
- stem cells
- computed tomography
- cystic fibrosis
- magnetic resonance
- visible light
- bone marrow
- magnetic resonance imaging
- mesenchymal stem cells
- molecularly imprinted
- loop mediated isothermal amplification
- electronic health record