PMID- 31617507 OWN - NLM STAT- MEDLINE DCOM- 20200421 LR - 20200421 IS - 1364-5528 (Electronic) IS - 0003-2654 (Linking) VI - 144 IP - 22 DP - 2019 Nov 4 TI - A biomimetic fluorescent nanosensor based on imprinted polymers modified with carbon dots for sensitive detection of alpha-fetoprotein in clinical samples. PG - 6760-6772 LID - 10.1039/c9an01065c [doi] AB - A biomimetic fluorescent nanosensor based on molecularly imprinted polymers modified with carbon dots (CDs@MIPs) has been prepared for rapid, selective and sensitive detection of alpha-fetoprotein (AFP) in clinical samples. The nanosensor was produced using vinyl-functionalized CDs (V-CDs) as transducer elements and support materials, AFP as the template protein, N-isopropylacrylamide (NIPAM) and 4-vinylphenylbronic acid (VPBA) as the thermo-responsive and pH-responsive monomer, respectively, and ammonium peroxodisulphate (APS) and N,N'-methylene bisacrylamide (MBA) as the initiator and cross-linker, respectively. The newly synthesized nanosensor was characterized by FT-IR, TEM, XRD and elemental analysis, which unambiguously confirmed the successful formation of the nanosensor. The fluorescence quenching degree of CDs@MIPs exhibited a good linear response to AFP in a concentration range of 10 to 100 ng mL-1, the limit of detection (LOD) of 0.474 ng mL-1, and high recoveries at three spiking levels of AFP ranging from 97.05% to 102.00%, with relative standard deviations (RSDs) below 4.2% being obtained. Moreover, the proposed CDs@MIPs were successfully exploited to detect AFP in human serum samples. This study successfully established a novel method for rapid, convenient, and highly sensitive and selective detection of AFP, which provides new ideas for the detection of tumor markers. FAU - Sun, Chenghong AU - Sun C AD - School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu 211166, China. chenlina@njmu.edu.cnl. FAU - Pan, Linli AU - Pan L FAU - Zhang, Lei AU - Zhang L FAU - Huang, Jiaojiao AU - Huang J FAU - Yao, Dandan AU - Yao D FAU - Wang, Chong-Zhi AU - Wang CZ FAU - Zhang, Yu AU - Zhang Y FAU - Jiang, Nan AU - Jiang N FAU - Chen, Lina AU - Chen L FAU - Yuan, Chun-Su AU - Yuan CS LA - eng PT - Journal Article PL - England TA - Analyst JT - The Analyst JID - 0372652 RN - 0 (4-vinylphenyl boronic acid) RN - 0 (AFP protein, human) RN - 0 (Acrylamides) RN - 0 (Boronic Acids) RN - 0 (Fluorescent Dyes) RN - 0 (Polymers) RN - 0 (Sulfates) RN - 0 (Vinyl Compounds) RN - 0 (alpha-Fetoproteins) RN - 7440-44-0 (Carbon) RN - B7GFF17L9U (N-isopropylacrylamide) RN - EDK4RIE19C (N,N'-methylenebisacrylamide) SB - IM MH - Acrylamides/chemistry MH - Biomimetic Materials/*chemistry MH - Boronic Acids/chemistry MH - Carbon/chemistry MH - Fluorescent Dyes/*chemistry MH - Humans MH - Limit of Detection MH - Molecular Imprinting/methods MH - Polymerization MH - Polymers/chemical synthesis/*chemistry MH - Quantum Dots/*chemistry MH - Spectrometry, Fluorescence/methods MH - Sulfates/chemistry MH - Vinyl Compounds/chemistry MH - alpha-Fetoproteins/*analysis EDAT- 2019/10/17 06:00 MHDA- 2020/04/22 06:00 CRDT- 2019/10/17 06:00 PHST- 2019/10/17 06:00 [pubmed] PHST- 2020/04/22 06:00 [medline] PHST- 2019/10/17 06:00 [entrez] AID - 10.1039/c9an01065c [doi] PST - ppublish SO - Analyst. 2019 Nov 4;144(22):6760-6772. doi: 10.1039/c9an01065c.