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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Disposable Microfluidic Immunoarray Device for Sensitive Breast Cancer Biomarker Detection

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Author(s):
de Oliveira, Ricardo A. G. ; Materon, Elsa M. ; Melendez, Matias E. ; Carvalho, Andre L. ; Faria, Ronaldo C.
Total Authors: 5
Document type: Journal article
Source: ACS APPLIED MATERIALS & INTERFACES; v. 9, n. 33, p. 27433-27440, AUG 23 2017.
Web of Science Citations: 18
Abstract

Breast cancer is the most common cancer in women worldwide. The detection of biomarkers has played a significant role in the early,diagnosis and prognosis of breast cancer. Herein, we describe the construction of a disposable microfluidic immunoarray device (D mu ID) for the rapid and low-cost detection of CAL5-3 (carbohydrate antigen 15-3), a protein biomarker for breast cancer. The D mu ID was constructed using a simple and rapid prototyping technique and was applied to detect CA15-3. in cancer patients, The D mu ID Construction was. based on the use, of a double-sided adhesive card with a microfluidic channel and a screen-printed array with 8 electrodes. Beth? the immunoarray and micro fluidic Channel were designed using an inexpensive home Cutter printer and using low-cost Materials. The immunoarray was modified using the layer-by-layer technique aiming at immobilizing the primary antibody. For the biomarker detection, magnetic particles (MPs) modified with polyclonal antibodies and peroxidase enzymes were used as a strategy for capture, separation, and preconcentration of the biomarker, in addition to :amplification of the electroanalytical signal. The preconcentration and amplification strategies integrated with the nanostructured immunosensors of the D mu ID meaningfully contributed toward the detection of CA15-3 with a limit of detection (LoD) of 6 mu U-4 mL(-1), requiring as low as mu L of serum samples for 8 simultaneous detections. The obtained LoD was 1200 times lower compared to those of other immunosensors previously reported in the literature. The D mu ID was applied for the detection of CA15-3 in real samples of breast cancer patients and was found to present an excellent correlation with the well-established commercial electrochemiluminescence immunoassay.. The association of the D mu ID with nanostructured surfaces and analyte capturing with bioconjugated paramagnetic particles is essentially a promising breakthrough for the low-cost and accurate detection of cancer biomarkers. (AU)

FAPESP's process: 15/19890-1 - Development of methods for diagnosis of diseases using magnetic particles and an array of imunossensors in a disposable microfluidic system
Grantee:Ronaldo Censi Faria
Support Opportunities: Regular Research Grants