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Xu N, Li X, Luan F, Tian C, Zhang Z, Chen L, Zhuang X. Ratiometric fluorescent and electrochemiluminescent dual modal assay for detection of 2,6-pyridinedicarboxylic acid as an anthrax biomarker. Anal Chim Acta 2024; 1288:342181. [PMID: 38220309 DOI: 10.1016/j.aca.2023.342181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/23/2023] [Accepted: 12/25/2023] [Indexed: 01/16/2024]
Abstract
2,6-pyridinedicarboxylic acid (DPA) is an excellent biomarker of Bacillus anthracis (B. anthracis). The sensitive detection of DPA, especially through visual point-of-care testing, was significant for accurate and rapid diagnosis of anthrax to timely prevent anthrax disease or biological terrorist attack. Herein, a ratiometric fluorescent (R-FL) and electrochemiluminescent (ECL) dual-mode detection platform with a lanthanide ion-based metal-organic framework (Ln-MOF, i.e., M/Y-X: M = Eu, Y = Tb, and X = 4,4',4″-s-triazine-1,3,5-triyltri-m-aminobenzoic acid) was developed. Eu/Tb-TATAB nanoparticles were constructed to identify DPA. The R-FL detection platform quantitatively detected DPA by monitoring the I545/I617 ratio of the characteristic fluorescence peak intensities of Tb3+ ions and Eu3+ ions. The ECL sensing platform successfully quantified DPA by exploiting the burst effect of DPA on the ECL signal. The above methods had highly sensitive and rapid detection of DPA in water and serum samples. The results showed that this dual-mode detection platform may be projected to be a powerful instrument for preventing related biological warfare and bio-terrorism.
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Affiliation(s)
- Ning Xu
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China
| | - Xin Li
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China
| | - Feng Luan
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China
| | - Chunyuan Tian
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China
| | - Zhiyang Zhang
- Shandong Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
| | - Lingxin Chen
- Shandong Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China.
| | - Xuming Zhuang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China.
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Cao Y, Gong X, Li L, Li H, Zhang X, Guo DY, Wang F, Pan Q. Xylenol orange-modified CdTe quantum dots as a fluorescent/colorimetric dual-modal probe for anthrax biomarker based on competitive coordination. Talanta 2023; 261:124664. [PMID: 37209586 DOI: 10.1016/j.talanta.2023.124664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 05/22/2023]
Abstract
Bacillus anthracis spores can make humans infected with vicious anthrax, so it is significant to detect their biomarker 2,6-pyridinedicarboxylic acid (DPA). The development of dual-modal methods for DPA detection that are more flexible in practical applications remains a challenge. Herein, colorimetric xylenol orange (XO) was modified on fluorescent CdTe quantum dots (QDs) for dual-modal detection of DPA through competitive coordination. After the binding of XO on CdTe QDs via coordination with Cd2+, CdTe QDs displayed quenched red fluorescence and the bound XO was presented as red color. The competitive coordination of DPA with Cd2+ made XO released from CdTe QDs, causing the enhanced red fluorescence of CdTe QDs and the yellow color of free XO. On this basis, DPA was rapidly (1 min) quantified through fluorescent and colorimetric modes within the ranges of 0.1-5 μM and 0.5-40 μM, respectively. The detection limits for DPA were calculated as low as 42 nM and 240 nM, respectively assigned to fluorescent and colorimetric modes. The level of urinary DPA was further measured. Satisfactory relative standard deviations (fluorescent mode: 0.1%-10.2%, colorimetric mode: 0.8%-1.8%) and spiked recoveries (fluorescent mode: 100.0%-115.0%, colorimetric mode: 86.0%-96.6%) were obtained.
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Affiliation(s)
- Yatian Cao
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Science, Hainan University, Haikou, 570228, China; School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
| | - Xiaolong Gong
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Science, Hainan University, Haikou, 570228, China
| | - Le Li
- NHC Key Laboratory of Tropical Disease Control, School of Tropical Medicine and Laboratory Medicine, Hainan Medical University, Haikou, 571199, China
| | - Huihui Li
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Science, Hainan University, Haikou, 570228, China.
| | - Xuanming Zhang
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Science, Hainan University, Haikou, 570228, China; School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
| | - Dong-Yu Guo
- Department of Clinical Laboratory, Xiamen Huli Guoyu Clinic, Co., Ltd., Xiamen, 361000, China.
| | - Fuxiang Wang
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Science, Hainan University, Haikou, 570228, China
| | - Qinhe Pan
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Science, Hainan University, Haikou, 570228, China; School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China.
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Chen L, Liu D, Zheng L, Yi S, He H. A structure-dependent ratiometric fluorescence sensor based on metal-organic framework for detection of 2,6-pyridinedicarboxylic acid. Anal Bioanal Chem 2021; 413:4227-4236. [PMID: 34009443 DOI: 10.1007/s00216-021-03369-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 01/15/2023]
Abstract
In the present work, a structure-dependent ratiometric fluorescence (RF) sensor constructed with boric acid-modified carbon quantum dots (B-CQDs) and Tb-MOF(MOF-76) was developed for sensing 2,6-pyridinedicarboxylic acid (DPA). Based on the distinct fluorescent responses of B-CQDs and MOF-76 to DPA, MOF-76/B-CQDs can be developed as a RF sensor for DPA detection. In this RF sensor, the reticulated cross-linked structure of MOF-76/B-CQDs can be destroyed by DPA due to a strong coordination effect between DPA and the Tb of MOF-76, resulting in the quenching of the fluorescence of B-CQD and the restoration of the fluorescence of MOF-76 after the addition of DPA. Benefiting from the confinement effect of the special structure change, the presented sensor showed high sensitivity toward DPA with a detection limit of 3.05 μM and excellent selectivity over the monochromatic fluorescence sensor.
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Affiliation(s)
- Li Chen
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing, 211198, China
| | - Donghao Liu
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing, 211198, China.,Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing, 211198, China
| | - Limin Zheng
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing, 211198, China
| | - Simin Yi
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing, 211198, China
| | - Hua He
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing, 211198, China. .,Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing, 211198, China. .,Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing, 211198, China.
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