Paper-based electrochemiluminescence origami cyto-device for multiple cancer cells detection using porous AuPd alloy as catalytically promoted nanolabels.

Abstract

The detection of cancer cells is important and fundamental for cancer diagnosis and therapy, which has attracted considerable interest recently. Although traditional cyto-sensors have been widely explored due to their high sensitivity and selectivity, it is still a challenge to develop a low-cost, portable, disposable, fast, and easy-to-use cancer cell detection method for applying in the field of cancer diagnosis and therapy. Herein, to address these challenges, we developed a microfluidic paper-based electrochemiluminescence origami cyto-device (μ-PECLOC), in which aptamers modified 3D macroporous Au-paper electrodes were employed as the working electrodes and efficient platforms for the specific cancer cells capture. Owing to the effective disproportionation of hydrogen peroxide and specific recognition of mannose on cell surface, concanavalin-A conjugated porous AuPd alloy nanoparticles were introduced into this μ-PECLOC as the catalytically promoted nanolabels for peroxydisulfate ECL system. Under the optimal conditions, the proposed μ-PECLOC exhibited excellent analytical performance with good stability, reproducibility, and accuracy, towards the cyto-sensing of four types of cancer cells indicating the potential applications to facilitate effective and multiple early cancer diagnosis and clinical treatment.

• Authors: Ludan Wu, Chao Ma, Lei Ge, Qingkun Kong, Mei Yan, Shenguang Ge, Jinghua Yu
• Journal: Biosensors & bioelectronics (Biosens Bioelectron) Vol. 63 Pg. 450-457 (Jan 15 2015) ISSN: 1873-4235 [Electronic] England
• PMID: 25128625 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2014 Elsevier B.V. All rights reserved.

Chemical References

• Alloys
• Aptamers, Nucleotide
• Palladium
• Gold

Topics

• Alloys
• Aptamers, Nucleotide (genetics)
• Biosensing Techniques (instrumentation)
• Cell Line, Tumor
• Conductometry (instrumentation)
• Electrodes
• Equipment Design
• Equipment Failure Analysis
• Gold (chemistry)
• Humans
• Immunoassay (instrumentation)
• Luminescent Measurements (instrumentation)
• Metal Nanoparticles (chemistry, ultrastructure)
• Microfluidic Analytical Techniques (instrumentation)
• Neoplasms, Experimental (diagnosis, genetics, immunology)
• Palladium (chemistry)
• Paper
• Reproducibility of Results
• Sensitivity and Specificity
• Tissue Array Analysis (instrumentation)