1
|
Kong RM, Han X, Li P, Zhao Y, Kong W, Xiang MH, Xia L, Qu F. An ATMND/SGI based three-way junction ratiometric fluorescent probe for rapid and sensitive detection of bleomycin. Analyst 2024; 149:2097-2102. [PMID: 38421038 DOI: 10.1039/d3an02186f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
In this work, we developed a rapid and sensitive label-free ratiometric fluorescent (FL) probe for the detection of bleomycin (BLM). The probe consists of a DNA sequence (D6) and two fluorophore groups, 2-amino-5,6,7-trimethyl-1,8-naphthalene (ATMND) and SYBR Green I (SGI). The D6 sequence could be folded into a three-way junction structure containing a C-C mismatch position in the junction pocket. The unique "Y" structure not only could entrap ATMND in the mismatch pocket with high affinity, leading to FL quenching at 408 nm, but also embed SGI in the grooves of the double-stranded portion, resulting in FL enhancement at 530 nm. In the presence of BLM-Fe(II), the "Y" structure of D6 was destroyed due to the specific cleavage of the BLM recognition site, the 5'-GT-3' site in D6. This caused the release of ATMND and SGI and thus the ratiometric signal change of FL enhancement by ATMND and FL quenching by SGI. Under optimal conditions, the ratiometric probe exhibited a linear correlation between the intensity ratio of F408/F530 and the concentration of BLM in the range of 0.5-1000 nM, with a detection limit of 0.2 nM. In addition, the probe was applied to detect BLM in human serum samples with satisfactory results, indicating its good clinical application potential.
Collapse
Affiliation(s)
- Rong-Mei Kong
- Key Laboratory of Life-Organic Analysis of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China.
| | - Xue Han
- Key Laboratory of Life-Organic Analysis of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China.
| | - Peihua Li
- Key Laboratory of Life-Organic Analysis of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China.
| | - Yan Zhao
- Key Laboratory of Life-Organic Analysis of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China.
| | - Weiheng Kong
- Key Laboratory of Life-Organic Analysis of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China.
| | - Mei-Hao Xiang
- Key Laboratory of Life-Organic Analysis of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China.
| | - Lian Xia
- Key Laboratory of Life-Organic Analysis of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China.
| | - Fengli Qu
- Key Laboratory of Life-Organic Analysis of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China.
| |
Collapse
|
2
|
Li P, Xie Z, Zhuang L, Deng L, Huang J. DNA-templated copper nanocluster: A robust and universal fluorescence switch for bleomycin assay. Int J Biol Macromol 2023; 234:123756. [PMID: 36812975 DOI: 10.1016/j.ijbiomac.2023.123756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 02/12/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023]
Abstract
Bleomycin (BLM) is widely utilized for cancer treatment due to the outstanding antitumor activity, but BLM with imprecisely controlled dosage may lead to lethal consequences. It is thus a profound task to accurately monitor the BLM levels in clinical settings. Herein, we propose a straightforward, convenient, and sensitive sensing method for BLM assay. Poly-T DNA-templated copper nanoclusters (CuNCs) are fabricated with strong fluorescence emission and uniform size distribution and served as fluorescence indicators for BLM. The high binding affinity of BLM for Cu2+makes it able to inhibit fluorescence signals generated from CuNCs. This is the underlying mechanism rarely explored and can be utilized for effective BLM detection. A detection limit of 0.27 μM (according to 3σ/s rule) is achieved in this work. And the precision, producibility, and practical useability are also confirmed with satisfactory results. Furthermore, the accuracy of the method is verified by high-performance liquid chromatography (HPLC). To sum up, the established strategy in this work exhibits the advantages of convenience, rapidness, low cost, and high precision. The construction of BLM biosensors is important to achieve the best therapeutic effect with minimal toxicity, which opens a new avenue for monitoring antitumor drugs in clinical settings.
Collapse
Affiliation(s)
- Peng Li
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, PR China; Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, PR China
| | - Zhuohao Xie
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, PR China; Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, PR China
| | - Liuyan Zhuang
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, PR China
| | - Liehua Deng
- Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, PR China.
| | - Jiahao Huang
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, PR China; Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, PR China.
| |
Collapse
|
3
|
Acar Y, Kandemir BB, Bayraç AT. A label-free G-quadruplex and ThT mediated fluorescent sensor for detection of Cu2+ from water samples. TALANTA OPEN 2022. [DOI: 10.1016/j.talo.2022.100159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
|