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A Rapid and Simple Method for Simultaneous Determination of Three Breast Cancer Related Micrornas Based on Magnetic Nanoparticles Modified With S9.6 Antibody Publisher Pubmed



Ghanbari R1 ; Attaripour Isfahani A1 ; Pirmoradian S1 ; Rezaei H2 ; Radfar S3 ; Kheirollahi M4
Authors
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Authors Affiliations
  1. 1. Department of Biological Science and Technology, Najafabad Branch, Islamic Azad University, Najafabad, Iran
  2. 2. Genetics Division, Biology Department, Faculty of Sciences, University of Isfahan, Isfahan, 81746-73441, Iran
  3. 3. Stem Cell and Regenerative Medicine Center of Excellence, Tehran University of Medical Science, Tehran, Iran
  4. 4. Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

Source: Analytical Biochemistry Published:2023


Abstract

Cancer progression is typically associated with the simultaneous changes of multiple microRNA (miR) levels. Therefore, simultaneous determination of multiple miR biomarkers exhibits great promise in early diagnosis of cancers. This research seeks to discuss a simple biosensing method for the ultrasensitive and specific detection of the three miRs related to the breast cancer based on S9.6 antibody coated magnetic beads, titanium phosphate nanospheres, and screen-printed carbon electrode. To prepare signaling probes, three hairpin DNAs (hDNAs) were labeled with three encoding titanium phosphate nanospheres with large quantities of different heavy metal ions (zinc, cadmium, lead), which have been utilized to discriminate the signals of three microRNA targets in relation with the corresponding heavy metal ions. After that, these hairpin structures hybridize with miR-21, miR-155 and miR-10b to form miR-21/hDNA1, miR-155/hDNA2 and miR-10b/hDNA3 complexes, which were captured by S9.6 antibodies (one anti-DNA/RNA antibody) pre-modified on magnetic bead surface. Therefore, the specific preconcentration of targets from complex matrixes can be carried out using magnetic actuation, increasing the sensitivity and specificity of the detection. The biosensor was suitably applied for direct and rapid detection of multiple microRNAs in real sample. It was observed that there were no significant differences between the results obtained by the suggested method and qRT-PCR as a reference method. So, this method makes an ultrasensitive novel platform for miRNAs expression profiling in clinical diagnosis and biomedical research. © 2023 Elsevier Inc.
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