Label-Free biochips for accurate detection of prostate cancer in the clinic: Dual biomarkers and circulating tumor cells

Lung Hsuan Pan, See Tong Pang, Po Yu Fang, Cheng Keng Chuang, Hung Wei Yang*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

14 Scopus citations

Abstract

Early diagnosis of prostate cancer (PCa) is essential for the prevention of metastasis and for early treatment; therefore, we aimed to develop a simple, accurate, and multi-analyte assay system for early PCa diagnosis in this study. Experimental design: We fabricated three kinds of biochips then integrated into microfluidic device for simultaneous detection of vascularendothelial growth factor (VEGF), prostate-specific antigen (PSA), and PCa circulating tumor cells (CTC) in human serum for accurate diagnosis of PCa. Then the integrated device can be put in the ELISA reader for signal analysis after sample incubation, no necessary of further fluorescence staining or microscopy counting. Result: The integrated device has wide liner detection ranges (0.05-25 ng/mL for both PSA and VEGF, and 5-300 cells/mL for PCa CTC), as well as high levels of sensitivity and selectivity, and demonstrated a high correlation with an enzyme-linked immunosorbent assay for sample detection in patients. Also, the presented biochips could maintain their stability when stored at 37°C for 49 days without significant differences in the red-shift (<5%). Conclusions: We have successfully developed a multi-analyte sensing system for rapid and easy detection of PSA, VEGF, and PC3 cells in PCa samples using label-free glass-based chips. This method presents the advantages of a broad working range, high specificity, label-free, high-speed, stability, and low cost detection method for point-of-care testing of PCa.

Original languageEnglish
Pages (from-to)4289-4300
Number of pages12
JournalTheranostics
Volume7
Issue number17
DOIs
StatePublished - 2017

Bibliographical note

Publisher Copyright:
© Ivyspring International Publisher.

Keywords

  • Circulating tumor cells
  • Label-free biochip
  • PSA
  • Prostate cancer diagnosis
  • VEGF

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