Journal: Biosensors
Article Title: Surface Plasmon Resonance as a Potential Diagnostic Tool for the Detection of CXC Chemokine Receptor 4 (CXCR4) on Extracellular Vesicles
doi: 10.3390/bios16030174
Figure Lengend Snippet: Establishing a standardized SPR label-free bioassay for EV detection using rEVs. ( A ) The calibration curves using a series of rEV concentrations and anti-CD9, anti-CD63, anti-CD81 and anti-CXCR4 antibodies. The RUs were plotted as a function of the rEV concentrations (particles/mL). Simple linear regression was fitted using GraphPad prism software version 10.6. The LOD was calculated using (3.3*σ)/S = LOD, with σ being the standard deviation of the curve and S the slope of the curve. The error bars represent standard deviations (n = 3). ( B ) Stability and repeatability of the chip with different mouse antibodies. The capture levels are stable for at least 100 cycles. ( C ) Binding response from the three measurements of rEVs at a concentration of 1 × 10 9 particles/mL, illustrating interday precision.
Article Snippet: This study leverages surface plasmon resonance (SPR) Biacore TM technology to unveil the diagnostic potential of detecting CXCR4 on extracellular vesicles (EVs).
Techniques: Bioassay, Software, Standard Deviation, Binding Assay, Concentration Assay