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Huang L, Qin S, Wen C, Xu Y, Lin Z, Wang Y. An off-on fluorescence method for acid phosphatase assay based on the inner filter effect of MnO 2 nanosheets on vitamin B 2. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 315:124263. [PMID: 38593539 DOI: 10.1016/j.saa.2024.124263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/21/2024] [Accepted: 04/06/2024] [Indexed: 04/11/2024]
Abstract
Fluorescence analysis has attracted much attention due to its rapidity and sensitivity. The present work describes a novel fluorescence detection method for acid phosphatase (ACP) on the basis of inner-filter effect (IFE), where MnO2 nanosheets (MnO2 NSs) and vitamin B2 (VB2) are served as absorbers and fluorophores, respectively. In the absence of ACP, the absorption band of MnO2 NSs overlaps well with the excitation band of VB2, resulting in effective IFE and inhibition of VB2 fluorescence. In the presence of ACP, 2-phospho-L-ascorbic acid trisodium salt (AAP) is hydrolyzed to generate ascorbic acid (AA), which efficiently trigger the reduction of MnO2 NSs into Mn2+ ions, causing the weakening of the MnO2 NSs absorption band and the recovery of VB2 fluorescence. Further investigation indicates that the fluorescence recovery degree of VB2 increases with the increase of ACP concentration. Under selected experimental conditions, the proposed method can achieve sensitive detection of ACP in the ranges of 0.5-4.0 mU/mL and 4.0-15 mU/mL along with a limit of detection (LOD) as low as 0.14 mU/mL. Finally, this method was successfully applied for the detection of ACP in human serum samples with satisfactory recoveries in the range of 95.0 %-108 %.
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Affiliation(s)
- Li Huang
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530003, China
| | - Shangying Qin
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530003, China
| | - Chuang Wen
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530003, China
| | - Yuanjin Xu
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530003, China.
| | - Zhongwei Lin
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530003, China
| | - Yilin Wang
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530003, China.
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2
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Chen Y, Xu L, Zhao S, Miao C, Chen Y, Wang Z, Feng F, Lin M, Weng S. One-pot hydrothermal synthesis of silicon, nitrogen co-doped carbon dots for enhancing enzyme activity of acid phosphatase (ACP) to dopamine and for cell imaging. Talanta 2024; 278:126451. [PMID: 38917549 DOI: 10.1016/j.talanta.2024.126451] [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: 02/02/2024] [Revised: 06/06/2024] [Accepted: 06/18/2024] [Indexed: 06/27/2024]
Abstract
Developing water-soluble nanomaterials with high photoluminescence emission and high yield for biological analysis and imaging is urgently needed. Herein, water-soluble blue emitting silicon and nitrogen co-doped carbon dots (abbreviated as Si-CDs) of a high photoluminescence quantum yield of 80 % were effectively prepared with high yield rate (59.1 %) via one-step hydrothermal treatment of N-[3-(trimethoxysilyl)propyl]ethylenediamine (DAMO) and trans-aconitic acid. Furthermore, the Si-CDs demonstrate environmental robustness, photo-stability and biocompatibility. Given the importance of the potentially abnormal levels of acid phosphatase (ACP) in cancer diagnosis, developing a reliable and sensitive ACP measurement method is of significance for clinical research. The Si-CDs unexpectedly promote the catalytic oxidation of ACP on dopamine (DA) to polydopamine under acidic conditions through the produced reactive oxygen species (ROS). Correspondingly, a fluorescence response strategy using Si-CDs as the dual functions of probes and promoting enzyme activity of ACP on catalyzing DA was constructed to sensitively determine ACP. The quantitative analysis of ACP displayed a linear range of 0.1-60 U/L with a detection limit of 0.056 U/L. The accurate detection of ACP was successfully achieved in human serum through recovery tests. As a satisfactory fluorescent probe, Si-CDs were successfully applied to fluorescent imaging of A549 cells in cytoplasmic with long-term and safe staining. The Si-CDs have the dual properties of outstanding fluorescent probes and auxiliary oxidase activity, indicating their great potential in multifunctional applications.
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Affiliation(s)
- Yuanting Chen
- Department of Pharmacy, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China; Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou, 350001, China
| | - Linlin Xu
- Department of Pharmacy, Maternal and Child Health Hospital of Fuzhou Second General Hospital, Fuzhou, 350001, China; Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Sheng Zhao
- Department of Pharmacy, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China; Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou, 350001, China
| | - Chenfang Miao
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Yuyuan Chen
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Zhenzhen Wang
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Feng Feng
- Department of Pharmacy, Fujian Provincial Governmental Hospital, Affiliated Hospital of Fujian Health College, Fuzhou, 350003, China.
| | - Mingrui Lin
- Department of Pharmacy, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou, 350001, China.
| | - Shaohuang Weng
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China.
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Song Q, Gao H, Sun S, Li Y, Wu X, Yang J, Wang B, Zhang Y, Wang L. Two-pronged microenvironmental modulation of metal-oxidase cascade catalysis and metabolic intervention for synergistic tumor immunotherapy. Acta Biomater 2024; 173:378-388. [PMID: 37925121 DOI: 10.1016/j.actbio.2023.10.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 10/26/2023] [Accepted: 10/29/2023] [Indexed: 11/06/2023]
Abstract
Immunotherapy is an emerging treatment modality for tumors after surgery, radiotherapy, and chemotherapy. Despite the potential for eliminating primary tumor cells and depressing cancer metastasis, immunotherapy has huge challenges including low tumor immunogenicity and undesirable immunosuppressive tumor microenvironment (TME). Herein, the two-pronged microenvironmental modulation nanoplatform is developed to overcome these limitations. Specifically, hollow mesoporous MnO2 (HM) nanoparticles with pH responsive property are prepared and modified with glucose oxidase (GOX) by amide bond, which are further loaded with a potent glutaminase inhibitor CB839 to obtain HM-GOX/CB839. Under the low pH values in TME, HM was disintegrated, thereby releasing Mn2+, GOX and CB839. On the one hand, Mn2+ can convert H2O2 that increased by GOX catalysis in tumors into highly toxic hydroxyl radicals (•OH) and further induce immunogenic cell death (ICD) through the metal-oxidase cascade catalytic reaction, enhancing immunogenicity. On the other hand, GOX and CB839 can block glycolytic and glutamine metabolism pathways, respectively, which effectively reduce the number of immunosuppressive cells and reshape TME, improving anti-tumor immune efficacy. It is demonstrated that HM-GOX/CB839 can effectively activate the body's immunity and inhibit tumor growth and metastasis, providing a potential strategy for comprehensive tumor therapy. STATEMENT OF SIGNIFICANCE: Integrated microenvironmental modulation of metal-oxidase cascade catalysis and metabolic intervention offers a potential avenue for tumor immunotherapy. Under this premise, we constructed a two-pronged microenvironmental modulation nanoplatform (HM-GOX/CB839). On the one hand, the metal oxidase cascade could catalyze the generation of hydroxyl radicals (•OH) and induce immunogenic cell death (ICD), enhancing immunogenicity; on the other hand, metabolic intervention reprogrammed tumor microenvironment to relieve immunosuppression and thereby enhancing anti-tumor immune response. The resulting data demonstrated that HM-GOX/CB839 effectively inhibited tumor growth and metastasis, providing therapeutic potential for cancer immunotherapy.
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Affiliation(s)
- Qingling Song
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou 450001, China
| | - Hui Gao
- Department of Pharmacy, The First Hospital of Yulin (The Second Affiliated Hospital of Yan'an University), China
| | - Shuxin Sun
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou 450001, China
| | - Yao Li
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou 450001, China
| | - Xiaocui Wu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou 450001, China
| | - Junfei Yang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou 450001, China
| | - Baojin Wang
- Gynecology, the Third Affiliated Hospital of Zhengzhou University, China; Henan International Joint Laboratory of Ovarian Malignant Tumor, China.
| | - Yun Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou 450001, China.
| | - Lei Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou 450001, China.
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Qin J, Jiang X, Yan Z, Zhao H, Zhao P, Yao Y, Chen X. Heavy metal content and microbial characteristics of soil plant system in Dabaoshan mining area, Guangdong Province. PLoS One 2023; 18:e0285425. [PMID: 37294818 PMCID: PMC10256142 DOI: 10.1371/journal.pone.0285425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 04/21/2023] [Indexed: 06/11/2023] Open
Abstract
The disordered mining of Dabaoshan lead-zinc mineral resources in Shaoguan has brought serious harm to the regional ecological environment. In order to investigate the heavy metal pollution status and microbial characteristics of soil plant system in mining area, The distribution of heavy metals in the soil, the activity of soil microorganisms and the accumulation characteristics of heavy metals in the dominant plant Miscanthus floridulus were studied. The results indicated that metal element contents of Miscanthus floridulus in sequence were: Zn>Pb>Cu> Cd. This study demonstrated that the elemental content of the Miscanthus floridulus plant showed Zn>Pb>Cu>Cd, with Zn being the most significantly correlated with soil elements, followed by Pb. Compared with the control group, the Miscanthus floridulus-soil system possessed obviously different soil microbial features: intensiver in microbial basal respiration strength, and higher microbial eco-physiological parameters Cmic/Corg and qCO2, but lower in soil microbial biomass. The results showed the soil enzymatic activities decreased significantly with increase of contamination of heavy metals, especially dehydrogenase and urease activities. With the increase of the content of heavy metals in the mining area soil, the intensity of soil biochemical action in the mining area (Q1, Q2) soil decreased significantly, and the biochemical action showed a significant negative correlation with the content of heavy metals in the soil. Compared with the non mining area (Q8) soil, the intensity of soil ammonification, nitrification, N fixation and cellulose decomposition decreased by 43.2%~71.1%, 70.1%~92.1%, 58.7%~87.8% and 55.3%~79.8% respectively. The decrease of soil microbial activity weakened the circulation rate and energy flow of C and N nutrients in the soil of the mining area.
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Affiliation(s)
- Jianqiao Qin
- Guangdong Provincial Key Laboratory of Environmental Health and Land Resource, School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing, 526061, China
| | - Xueding Jiang
- School of Environmental and Chemical Engineering, Foshan University, Foshan, 528000, China
| | | | - Huarong Zhao
- School of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, China
| | - Peng Zhao
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People’s Republic of China, Guangzhou, 510655, China
| | - Yibo Yao
- Guangdong Provincial Academy of Environmental Scienc, Guangzhou, 510045, China
| | - Xi Chen
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China
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5
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Liu Q, Song P, Zhang W, Wang Z, Yang K, Luo J, Zhu L, Gui L, Tao Y, Ge F. Acid-Sensitive Nanoparticles Based on Molybdenum Disulfide for Photothermal-Chemo Therapy. ACS Biomater Sci Eng 2022; 8:1706-1716. [PMID: 35291764 DOI: 10.1021/acsbiomaterials.1c01390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The combination of multiple treatments has recently been investigated for tumor treatment. In this study, molybdenum disulfide (MoS2) with excellent photothermal conversion performance was used as the core, and manganese dioxide (MnO2), which responds to the tumor microenvironment, was loaded on its surface by liquid deposition to form a mesoporous core-shell structure. Then, the chemotherapeutic drug Adriamycin (DOX) was loaded into the hole. To further enhance its water solubility and stability, the surface of MnO2 was modified with mPEG-NH2 to prepare the combined antitumor nanocomposite MoS2@DOX/MnO2-PEG (MDMP). The results showed that MDMP had a diameter of about 236 nm, its photothermal conversion efficiency was 33.7%, and the loading and release rates of DOX were 13 and 65%, respectively. During in vivo and in vitro studies, MDMP showed excellent antitumor activity. Under the combined treatment, the tumor cell viability rate was only 11.8%. This nanocomposite exhibits considerable potential for chemo-photothermal combined antitumor therapy.
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Affiliation(s)
- Qin Liu
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, People's Republic of China
| | - Ping Song
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, People's Republic of China
| | - Weiwei Zhang
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, People's Republic of China
| | - Zhenyu Wang
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, People's Republic of China
| | - Kai Yang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection & School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, Jiangsu, China
| | - Jianquan Luo
- Institute of Process Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Longbao Zhu
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, People's Republic of China
| | - Lin Gui
- Department of Microbiology and Immunology, Wannan Medical College, Wuhu, Anhui 241002, Peoples Republic of China
| | - Yugui Tao
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, People's Republic of China
| | - Fei Ge
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, People's Republic of China
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Xu W, Qing X, Liu S, Yang D, Dong X, Zhang Y. Hollow Mesoporous Manganese Oxides: Application in Cancer Diagnosis and Therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106511. [PMID: 35043579 DOI: 10.1002/smll.202106511] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/30/2021] [Indexed: 06/14/2023]
Abstract
The precision, minimal invasiveness, and integration of diagnosis and treatment are critical factors for tumor treatment at the present. Although nanomedicine has shown the potential in tumor precision treatment, nanocarriers with high efficiency, excellent targeting, controlled release, and good biocompatibility still need to be further explored. Hollow mesoporous manganese oxides nanomaterials (HM-MONs), as an efficient drug delivery carrier, have attracted substantial attention in applications of tumor diagnosis and therapy due to their unique properties, such as tumor microenvironment stimuli-responsiveness, prominent catalytic activity, excellent biodegradation, and outstanding magnetic resonance imaging ability. The HM-MONs can not only enhance the therapeutic efficiency but also realize multimodal diagnosis of tumors. Consequently, it is necessary to introduce applications based on HM-MONs in cancer diagnosis and therapy. In this review, the representative progress of HM-MONs in synthesis is discussed. Then, several promising applications in drug delivery, bio-imaging, and bio-detection are highlighted. Finally, the challenges and perspectives of the anticancer applications are summarized, which is expected to provide meaningful guidance on further research.
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Affiliation(s)
- Wenjing Xu
- School of Medicine, Southeast University, Nanjing, 210009, China
| | - Xin Qing
- School of Medicine, Southeast University, Nanjing, 210009, China
| | - Shengli Liu
- Hepatopancreatobiliary Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210011, China
| | - Dongliang Yang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, China
| | - Xiaochen Dong
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, China
| | - Yewei Zhang
- School of Medicine, Southeast University, Nanjing, 210009, China
- Hepatopancreatobiliary Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210011, China
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Li S, Wang Y, Mu S, Zhang J, Liu X, Rizvi SFA, Zhang H, Ding N, Wu L. A feasible self-assembled near-infrared fluorescence sensor for acid phosphatase detection and cell imaging. Analyst 2021; 146:5558-5566. [PMID: 34515720 DOI: 10.1039/d1an01218e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The single signal amplification strategy is significant for detecting various disease biomarkers but is restricted by its limited accuracy. The multi-signal and multi-mode methods have overcome this deficiency. Acid phosphatase (ACP) is an important intracellular enzyme but one-step cell imaging material-based probes are scarce for ACP. Herein, we designed a one-step self-assembled polymer probe using neutral red (NR), modified-(pyridoxal-5'-phosphate (PLP)) and Eu3+. The polymer exhibited non-emission and excellent stability. Upon the catalytic hydrolysis reaction of ACP, the polymer exhibited two strong fluorescence signals at 373 nm and 613 nm and an appreciable decline of absorbance at 395 nm. The probe has excellent selectivity and higher sensitivity with a limit of detection as low as 0.02 mU mL-1. It possesses favorable biocompatibility and has been successfully used to detect and image intracellular ACP in several living cells.
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Affiliation(s)
- Shuangqin Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
| | - Yaya Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
| | - Shuai Mu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
| | - Jinlong Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
| | - Xiaoyan Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
| | - Syed Faheem Askari Rizvi
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
| | - Haixia Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
| | - Nana Ding
- College of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu 730030, China.
| | - Lan Wu
- College of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu 730030, China.
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Zhang T, He W, Song X, Wu D, Xia Y, Liu Y, Wu L, Sun W, Lin F, Chen J. A colorimetric sensor for acid phosphatase activity detection based on acridone derivative as visible-light-stimulated oxidase mimic. Anal Chim Acta 2021; 1155:338357. [PMID: 33766320 DOI: 10.1016/j.aca.2021.338357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/21/2021] [Accepted: 02/26/2021] [Indexed: 01/14/2023]
Abstract
Currently, organic artificial enzymes as biocatalysts have been extensively used to construct various colorimetric sensors. However, exploiting a potential organic artificial enzyme with high catalytic efficiency still remains a challenge. To address this issue, herein, we synthesize an acridone derivative 10-benzyl-2-amino-acridone (BAA). The synthesized BAA exhibits an intrinsic visible-light-stimulated oxidase-like activity, which is capable of oxidizing various chromogenic substrates without destructive hydrogen peroxide (H2O2) under visible light stimulation, resulting in colored products. The reaction system can be regulated by switching light on and off, which is milder and more reliable means than others H2O2-dependent. The photocatalytic mechanism of BAA is investigated in detail. However, l-ascorbic acid (AA), an antioxidant generating from the acid phosphatase (ACP)-mediated hydrolysis of 2-phospho-l-ascorbic acid (AAP), is able to inhibit the catalytic activity of BAA. Based on the above properties, a facile, photo-switchable and low-cost colorimetric sensing strategy is developed for ACP detection. The linear range is 0.05-2.5 U/L (r = 0.9994), and the limit of detection (LOD) is 0.0415 U/L. Moreover, the proposed sensing system can be applied for monitoring ACP activity in practical samples, demonstrating promising applications in clinical analysis and biosensor platform.
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Affiliation(s)
- Tao Zhang
- Department of Orthopedics Institute, Fuzhou Second Hospital Affiliated to Xiamen University, Fuzhou, 350007, PR China
| | - Wenhui He
- Department of Orthopedics Institute, Fuzhou Second Hospital Affiliated to Xiamen University, Fuzhou, 350007, PR China; Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350122, PR China
| | - Xiaodan Song
- Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350122, PR China; Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350122, PR China
| | - Dongzhi Wu
- Department of Orthopedics Institute, Fuzhou Second Hospital Affiliated to Xiamen University, Fuzhou, 350007, PR China
| | - Yaokun Xia
- Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350122, PR China; Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350122, PR China
| | - Yan Liu
- Department of Orthopedics Institute, Fuzhou Second Hospital Affiliated to Xiamen University, Fuzhou, 350007, PR China
| | - Linzhao Wu
- Department of Orthopedics Institute, Fuzhou Second Hospital Affiliated to Xiamen University, Fuzhou, 350007, PR China
| | - Weiming Sun
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350122, PR China; Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350122, PR China.
| | - Fengfei Lin
- Department of Orthopedics Institute, Fuzhou Second Hospital Affiliated to Xiamen University, Fuzhou, 350007, PR China; Department of Orthopaedic Trauma, Fuzhou Second Hospital Affiliated to Xiamen University, Fuzhou, 350007, PR China.
| | - Jinghua Chen
- Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350122, PR China; Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350122, PR China.
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