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He L, Zhang S, Ji H, Wang M, Peng D, Yan F, Fang S, Zhang H, Jia C, Zhang Z. Protein-templated cobaltous phosphate nanocomposites for the highly sensitive and selective detection of platelet-derived growth factor-BB. Biosens Bioelectron 2015; 79:553-60. [PMID: 26749096 DOI: 10.1016/j.bios.2015.12.095] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 12/25/2015] [Accepted: 12/26/2015] [Indexed: 10/22/2022]
Abstract
We synthesized novel Co3(PO4)2-based nanocomposites with 3D porous architectures via self-assembly; here, bovine serum albumin (BSA) and aptamer were used as organic phases to produce Co3(PO4)2@BSA and Co3(PO4)2@Apt nanocomposites, respectively. The formation mechanism of Co3(PO4)2-based nanocomposites was described based on characterizations of their physio-chemical performance, and the developed nanocomposites were applied as scaffold materials to construct a novel electrochemical aptasensor and detect platelet-derived growth factor-BB (PDGF-BB). The PDGF-BB targeting aptamer must be immobilized onto the Co3(PO4)2@BSA-modified electrode to detect PDGF-BB, whereas Co3(PO4)2@Apt-based aptasensor may be directly used to determine the target protein. Electrochemical impedance spectroscopy results showed that the developed Co3(PO4)2@BSA- and Co3(PO4)2@Apt-based aptasensors present highly sensitive detection ability toward PDGF-BB. Due to the special nanoflower structure, the Co3(PO4)2@BSA-based aptasensor features a detection limit of 3.7 pg mL(-1); while the limit of detection of the Co3(PO4)2@Apt-based aptasensor is 61.5 pg mL(-1), which is the possible bioactivity loss of the aptamer in Co3(PO4)2@Apt nanocomposite. The two detection limits obtained are still much lower than or comparable with those of previously reported aptasensors. The Co3(PO4)2@BSA- and Co3(PO4)2@Apt-based aptasensors showed high selectivity, stability, and applicability for detecting the desired protein. This finding indicates that the Co3(PO4)2-based nanocomposites could be used as an electrochemical biosensor for various detection procedures in the biomedical field.
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Affiliation(s)
- Linghao He
- State Laboratory of Surface and Interface Science of Henan Province, Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Shuai Zhang
- State Laboratory of Surface and Interface Science of Henan Province, Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Hongfei Ji
- State Laboratory of Surface and Interface Science of Henan Province, Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Minghua Wang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration,Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Donglai Peng
- State Laboratory of Surface and Interface Science of Henan Province, Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Fufeng Yan
- State Laboratory of Surface and Interface Science of Henan Province, Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Shaoming Fang
- State Laboratory of Surface and Interface Science of Henan Province, Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China; Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration,Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Hongzhong Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration,Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Chunxiao Jia
- State Laboratory of Surface and Interface Science of Henan Province, Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China; Henan Collaborative Innovation Center of Food Production and Safety, Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Zhihong Zhang
- State Laboratory of Surface and Interface Science of Henan Province, Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China; Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration,Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China.
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Ratautaite V, Topkaya SN, Mikoliunaite L, Ozsoz M, Oztekin Y, Ramanaviciene A, Ramanavicius A. Molecularly Imprinted Polypyrrole for DNA Determination. ELECTROANAL 2013. [DOI: 10.1002/elan.201300063] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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