pH-responsive allochroic nanoparticles for the multicolor detection of breast cancer biomarkers
 

pH-responsive allochroic nanoparticles for the multicolor detection of breast cancer biomarkers

Weiqing Xu, Lei Jiao, Huarong Ye, Zhenzhong Guo, Yu Wu, Hongye Yan, Wenling Gu, Dan Du, Yuehe Lin Chengzhou Zhu
Biosensors & bioelectronics, Vol.148, p.111780
01/15/2020
: 31665670
Biotechnology & Applied Microbiology Chemistry Chemistry, Analytical Life Sciences & Biomedicine Nanoscience & Nanotechnology Science & Technology Biophysics Electrochemistry Physical Sciences
Estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor-2 (HER2) are the three crucial biomarkers for the clinical diagnosis of breast cancer. Sensitive and precise detection of ER, PR, and HER2 is of great significance for the diagnosis of breast cancer. Herein, through a simple solvent-induced self-assembly process, the self-carried allochroic nanoparticles were prepared by using some hydrophobic pH indicator molecules for allochroic NPs-linked immunosorbent assay (named ALISA) of ER, PR, and HER2, respectively. Meanwhile, the introduction of bovine serum albumin (BSA) and antibody (Ab) enhanced the dispersity of the self-assembled nanoparticles as signal tags. Since the ultra-high loading and high-efficiency release of pH indicators, the ALISA exhibitssatisfactory selectivity and sensitivity, which demonstrated the great potential in the early diagnosis and postoperative monitoring of breast cancers. Furthermore, the smartphone was introduced to combine with the ALISA for point-of-care testing, indicating the high feasibility in practical applications.
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