1
|
Du XY, Yang JY. Biomimetic microfluidic chips for toxicity assessment of environmental pollutants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 919:170745. [PMID: 38340832 DOI: 10.1016/j.scitotenv.2024.170745] [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: 10/30/2023] [Revised: 01/31/2024] [Accepted: 02/04/2024] [Indexed: 02/12/2024]
Abstract
Various types of pollutants widely present in environmental media, including synthetic and natural chemicals, physical pollutants such as radioactive substances, ultraviolet rays, and noise, as well as biological organisms, pose a huge threat to public health. Therefore, it is crucial to accurately and effectively explore the human physiological responses and toxicity mechanisms of pollutants to prevent diseases caused by pollutants. The emerging toxicological testing method biomimetic microfluidic chips (BMCs) exhibit great potential in environmental pollutant toxicity assessment due to their superior biomimetic properties. The BMCs are divided into cell-on-chips and organ-on-chips based on the distinctions in bionic simulation levels. Herein, we first summarize the characteristics, emergence and development history, composition and structure, and application fields of BMCs. Then, with a focus on the toxicity mechanisms of pollutants, we review the applications and advances of the BMCs in the toxicity assessment of physical, chemical, and biological pollutants, respectively, highlighting its potential and development prospects in environmental toxicology testing. Finally, the opportunities and challenges for further use of BMCs are discussed.
Collapse
Affiliation(s)
- Xin-Yue Du
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Jin-Yan Yang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China..
| |
Collapse
|
2
|
Li J, Chen M, Ke S, Tian J, Yu H, Liu X, Yu BY. Generation of a high-affinity DNA aptamer for on-site screening of toxic aristolochic acid I in herbal medicines and botanical products. Anal Chim Acta 2023; 1264:341302. [PMID: 37230722 DOI: 10.1016/j.aca.2023.341302] [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: 02/26/2023] [Revised: 04/12/2023] [Accepted: 04/28/2023] [Indexed: 05/27/2023]
Abstract
Aristolochic Acid I (AAI) is an environmental and foodborne toxin found in the Aristolochia and Asarum species of plants that are widespread all over the world. Therefore, there is an urgent need to develop a sensitive and specific biosensor for identifying AAI. Aptamers as a powerful biorecognition element provide the most viable options for solving this problem. In this study, we used library-immobilized SELEX to isolate an AAI-specific aptamer with a KD value of 86 ± 13 nM. To verify the practicability of the selected aptamer, a label-free colorimetric aptasensor was designed. This aptasensor exhibited a low detection limit of 225 nM. Besides, it had been further applied for the determination of AAI in real samples and the recoveries ranged from 97.9% to 102.4%. In the future, AAI aptamer will provide a promising tool for safety evaluation in various fields of agriculture, food, and medication.
Collapse
Affiliation(s)
- Jiwei Li
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Meiqi Chen
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Sisi Ke
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Jiangwei Tian
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Haixiang Yu
- Department of Surgery, Duke University Medical Center, Durham, NC, 27710, USA.
| | - Xiufeng Liu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China.
| | - Bo-Yang Yu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| |
Collapse
|
3
|
Lin CC, Lin PY, Han Z, Tsai CY, Beck DE, Hsieh S. Rapid identification and detection of aristolochic acids in the herbal extracts by Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 300:122918. [PMID: 37269653 DOI: 10.1016/j.saa.2023.122918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/16/2023] [Accepted: 05/24/2023] [Indexed: 06/05/2023]
Abstract
Herbs containing aristolochic acids (AAs) have already been proven to be highly carcinogenic and nephrotoxic. In this study, a novel surface-enhanced Raman scattering (SERS) identification method was developed. Ag-APS nanoparticles with a particle size of 3.53 ± 0.92 nm were produced by combining silver nitrate and 3-aminopropylsilatrane. The reaction between the carboxylic acid group of aristolochic acid I (AAI) and amine group of Ag-APS NPs was used to form amide bonds, and thus, concentrate AAI, rendering it easy to detect via SERS and amplified to obtain the best SERS enhancement effect. Detection limit was calculated to be approximately 40 nM. Using the SERS method, AAI was successfully detected in the samples of four Chinese herbal medicines containing AAI. Therefore, this method has a high potential to be applied in the future development of AAI analysis and rapid qualitative and quantitative analysis of AAI in dietary supplements and edible herbs.
Collapse
Affiliation(s)
- Chin-Chung Lin
- Department of Emergency Medicine, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan
| | - Pei-Ying Lin
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Zhenyuan Han
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Chen-Yu Tsai
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - David E Beck
- Oxford Instruments Asylum Research, Inc., 7416 Hollister Ave., Santa Barbara, CA 93117, USA
| | - Shuchen Hsieh
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| |
Collapse
|
4
|
Wang X, Lu Q, Dou L, Liu M, Li P, Yu W, Yu X, Wang Z, Wen K. Broad-specificity indirect competitive enzyme-linked immunosorbent assay for aristolochic acids: Computer-aided hapten design and molecular mechanism of antibody recognition. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 859:159941. [PMID: 36347294 DOI: 10.1016/j.scitotenv.2022.159941] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/19/2022] [Accepted: 10/31/2022] [Indexed: 06/16/2023]
Abstract
Long-term dietary exposure of aristolochic acids (AAs)-contaminated food proved to be one of the main culprits of Endemic Nephropathy, renal failure; and urothelial cancer. The antibodies utilized in immunoassays for AAs suffer from low affinity and failure of recognition to the family of AAs. This study, we prepared a broad-specificity monoclonal antibody (mAb) 5H5 with highly and uniform affinity for AAs by help of computational chemistry fully exposing the AAs common structures of methoxy and hydroxyl groups. The mAb 5H5 exhibited half inhibitory concentrations of AAA, AAB, AAC, AAD were 0.03, 0.06, 0.05, 0.03 ng/mL. To explain the broad-specificity profile of mAb 5H5, molecular docking was performed. Results shown that multiple conformations of AAs can be flexibly oriented in the spacious cavity of single-chain variable fragment antibody (scFv) 5H5 and the specific hydron bonds were formed by ASN62 and GLY64 of scFV 5H5 to the nitro group of AAs which gave an explanation of the high cross-reactivity of mAb 5H5. The ELISA based on the broad-specificity mAb 5H5with detection limits of 0.04-0.11 μg/kg and 0.02-0.06 μg/kg for four AAs in flour and soil samples, respectively. The study provided a promising method for the family of AAs in environmental and food samples.
Collapse
Affiliation(s)
- Xiaonan Wang
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Qingpeng Lu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Leina Dou
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Minggang Liu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Peipei Li
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Wenbo Yu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Xuezhi Yu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Zhanhui Wang
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Kai Wen
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China.
| |
Collapse
|
5
|
Guo W, Shi Z, Zhang J, Zeng T, He Y, Cai Z. Analysis of aristolochic acid I in mouse serum and tissues by using magnetic solid-phase extraction and UHPLC-MS/MS. Talanta 2021; 235:122774. [PMID: 34517632 DOI: 10.1016/j.talanta.2021.122774] [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: 06/10/2021] [Revised: 07/25/2021] [Accepted: 07/31/2021] [Indexed: 10/20/2022]
Abstract
A method combining magnetic solid-phase extraction (MSPE) and ultra-high-pressure liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) was developed for the analysis of aristolochic acids I (AAI) in mouse serum and tissues. The magnetic covalent organic frameworks (MNP@COF)-based MSPE exhibited high adsorption capacity towards AAI (93.1 mg/g) in optimal conditions. After MSPE extraction, AAI was separated with C18 column using gradient elution and quantified (m/z 342.21 → 298.13) by UHPLC-MS/MS with monitor reaction monitoring (MRM) mode. This MSPE-based UHPLC-MS/MS method was validated with respected to lower limit of quantification (LLOQ), linearity, recovery, precision and accuracy of intra- and inter-day, and matrix effect. Good calibration linearities at the range of 1-500 ng/L for AAI in biological matrices (serum, kidney, and liver) with high correlation coefficient (R2) > 0.9970, and high enrichment factors (mean values from 1038 to 1045) were obtained. This method was highly sensitive to determine AAI with LLOQ within the range of 4.62-5.24 ng/L in extracted serum, kidney, and liver samples. Recoveries at 5, 50, 100 and 300 ng/L in biological samples ranged from 93.2 to 104.0%, and intra- and inter day accuracy and precision (defined as bias and coefficient of variation, respectively) were below ± 15%. The method was successfully applied in the analysis of biological samples collected from mice exposed with AAI with concentrations range of 0.007-0.041 μg/L for consecutive four days. The established method might be applied for the investigation of risk assessment and toxicity induced by long-time use of AAI-containing herbs or dietary supplements.
Collapse
Affiliation(s)
- Wenjing Guo
- Ministry of Education Key Laboratory of Analytical Science for Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Zhangsheng Shi
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, 999077, SAR, Hong Kong, China
| | - Jing Zhang
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, 999077, SAR, Hong Kong, China
| | - Ting Zeng
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, 999077, SAR, Hong Kong, China
| | - Yu He
- Ministry of Education Key Laboratory of Analytical Science for Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Zongwei Cai
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, 999077, SAR, Hong Kong, China.
| |
Collapse
|
6
|
Ou AF, Chen ZJ, Zhang YF, He QY, Xu ZL, Zhao SQ. Preparation of Anti-Aristolochic Acid I Monoclonal Antibody and Development of Chemiluminescent Immunoassay and Carbon Dot-Based Fluoroimmunoassay for Sensitive Detection of Aristolochic Acid I. Foods 2021; 10:foods10112647. [PMID: 34828932 PMCID: PMC8622072 DOI: 10.3390/foods10112647] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/26/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022] Open
Abstract
Aristolochic acid (AA) toxicity has been shown in humans regarding carcinogenesis, nephrotoxicity, and mutagenicity. Monitoring the AA content in drug homologous and healthy foods is necessary for the health of humans. In this study, a monoclonal antibody (mAb) with high sensitivity for aristolochic acid I (AA-I) was prepared. Based on the obtained mAb, a chemiluminescent immunoassay (CLEIA) against AA-I was developed, which showed the 50% decrease in the RLUmax (IC50) value of 1.8 ng/mL and the limit of detection (LOD) of 0.4 ng/mL. Carbon dots with red emission at 620 nm, namely rCDs, were synthesized and employed in conventional indirect competitive enzyme-linked immunosorbent assay (icELISA) to improve the assay sensitivity of a fluoroimmunoassay (FIA). Oxidized 3,3'',5,5''-tetramethylbenzidine dihydrochloride (oxTMB) can quench the emission of the rCDs through the inner-filter effect; therefore, the fluorescence intensity of rCDs can be regulated by the concentration of mAb. As a result, the assay sensitivity of FIA was improved by five-fold compared to CLEIA. A good relationship between the results of the proposed assays and the standard ultra-high performance liquid chromatography-triple quadrupole mass spectrometer (UPLC-QQQ-MS/MS) of real samples indicated good accuracy and practicability of CLEIA and FIA.
Collapse
Affiliation(s)
- Ai-Fen Ou
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China; (A.-F.O.); (Q.-Y.H.)
- Department of Food, Guangzhou City Polytechnic, Guangzhou 510006, China
| | - Zi-Jian Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China; (Z.-J.C.); (Y.-F.Z.); (Z.-L.X.)
| | - Yi-Feng Zhang
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China; (Z.-J.C.); (Y.-F.Z.); (Z.-L.X.)
| | - Qi-Yi He
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China; (A.-F.O.); (Q.-Y.H.)
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China; (Z.-J.C.); (Y.-F.Z.); (Z.-L.X.)
| | - Su-Qing Zhao
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China; (A.-F.O.); (Q.-Y.H.)
- Correspondence:
| |
Collapse
|
7
|
Zhang M, Liu H, Han Y, Bai L, Yan H. On-line enrichment and determination of aristolochic acid in medicinal plants using a MOF-based composite monolith as adsorbent. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1159:122343. [PMID: 32905990 DOI: 10.1016/j.jchromb.2020.122343] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 08/10/2020] [Accepted: 08/20/2020] [Indexed: 12/26/2022]
Abstract
In this study, modified UiO-66-NH2 and N-methylolacrylamide (NMA) were used as common monomers to prepare a metal organic framework (MOF)-based composite monolith through in-situ polymerization, which was used as a new adsorbent to purify and enrich aristolochic acid-I (AA-I) in medicinal plants. The MOF-based composite monolithic column was characterized by nitrogen adsorption-desorption isotherm, mercury intrusion porosimetry and scanning electron microscopy (SEM). The adsorption ability of MOF-based composite monolith for AA-I was compared with that of the polymer monolith without MOF added. The results proved that the addition of UiO-66-NH2 can increase both the specific surface area and the permeability of the monolith. Moreover, the adsorption amount of AA-I on the monolith improved. This proposed on-line solid phase extraction (SPE) method showed good linear relationship in the range 0.044 ~ 400 μg/mL with r = 0.9994; the limit of detection (LOD) was 13.08 ng/mL and the limit of quantification (LOQ) was 44.00 ng/mL; the intra-day and inter-day accuracies were less than 0.97%; the inter-column accuracies was less than 6.11%; the recovery was in the range of 91.11%~106.48%. The method was found to be easy, accurate and convenient for on-line enrichment and purification of AA-I in medicinal plants.
Collapse
Affiliation(s)
- Miaomiao Zhang
- Key Laboratory of Public Health Safety of Hebei Province, College of Pharmacy, Hebei University, Baoding, 071002, China, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
| | - Haiyan Liu
- Key Laboratory of Public Health Safety of Hebei Province, College of Pharmacy, Hebei University, Baoding, 071002, China, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
| | - Yamei Han
- Key Laboratory of Public Health Safety of Hebei Province, College of Pharmacy, Hebei University, Baoding, 071002, China, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
| | - Ligai Bai
- Key Laboratory of Public Health Safety of Hebei Province, College of Pharmacy, Hebei University, Baoding, 071002, China, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
| | - Hongyuan Yan
- Key Laboratory of Public Health Safety of Hebei Province, College of Pharmacy, Hebei University, Baoding, 071002, China, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
| |
Collapse
|
8
|
Preparation of sensitive monoclonal antibodies against triptolide and establishment of a rapid and cost-effective icELISA method for authentication of Tripterygium wilfordii and related products. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
9
|
Ye J, Cai X, Zhou Q, Yan Z, Li K. Molecularly imprinted ratiometric fluorescent probe for visual and fluorescent determination of aristolochic acid I based on a Schiff-base fluorescent compound. Mikrochim Acta 2020; 187:623. [PMID: 33090285 DOI: 10.1007/s00604-020-04598-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 10/07/2020] [Indexed: 10/23/2022]
Abstract
A molecularly imprinted ratiometric fluorescent probe (MIRF probe) was synthesized for the determination of aristolochic acid I (AAI) based on the Schiff-base fluorescent compound N,N'-bis(o-carboxybenzylidene)-p-4,4'-diaminobiphenyl (BDDB). The BDDB was immobilized in the silica nanoparticle (BDDB@SiO2) as an internal standard material. The blue-emitting BDDB@SiO2 and the yellow-emitting carbon quantum dots (y-CDs) were wrapped in the molecularly imprinted polymer (MIP) to provide a reliable reference signal at 440 nm and a fluorescent response signal at 530 nm at the excitation wavelength of 365 nm, respectively. In the preparation of the MIP of the MIRF probe, 4-vinylbenzoic acid as the functional monomer and AAI as the template molecule were used. An imprinting factor of 2.25 was obtained. Under the optimum conditions, the fluorescent response signal at 530 nm was quenched gradually by AAI in the range 1.0 to 120.0 μmol/L, while the reference signal at 440 nm remained unchanged. The limit of detection was 0.45 μmol/L, and the fluorescent color of the MIRF probe changed gradually from yellow to green to blue, which illustrated that the developed probe had a specific AAI recognition ability, a good anti-interference ability, and a sensitively visual determination ability. The probe was successfully applied to the AAI determination in traditional Chinese medicine (TCM) Asarum. The results showed that it had satisfactory recoveries (95.5-107.3%) and low relative standard deviations (2.0%). Furthermore, this method has a potential for the onsite naked eye determination of AAI in TCM samples.Graphical abstract.
Collapse
Affiliation(s)
- Jianping Ye
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Xin Cai
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Qing Zhou
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Zhihong Yan
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Kang Li
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| |
Collapse
|
10
|
Zhang M, Liu H, Han Y, Bai L, Yan H. A review on the pharmacological properties, toxicological characteristics, pathogenic mechanism and analytical methods of aristolochic acids. TOXIN REV 2020. [DOI: 10.1080/15569543.2020.1811344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Miaomiao Zhang
- Key Laboratory of Public Health Safety of Hebei Province, College of pharmacy, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding, China
| | - Haiyan Liu
- Key Laboratory of Public Health Safety of Hebei Province, College of pharmacy, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding, China
| | - Yamei Han
- Key Laboratory of Public Health Safety of Hebei Province, College of pharmacy, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding, China
| | - Ligai Bai
- Key Laboratory of Public Health Safety of Hebei Province, College of pharmacy, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding, China
| | - Hongyuan Yan
- Key Laboratory of Public Health Safety of Hebei Province, College of pharmacy, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding, China
| |
Collapse
|
11
|
Zhang Y, ShiYang X, Zhang Y, Li Y, Shi X, Xiong B. Exposure to aristolochic acid I compromises the maturational competency of porcine oocytes via oxidative stress-induced DNA damage. Aging (Albany NY) 2020; 11:2241-2252. [PMID: 31004078 PMCID: PMC6520013 DOI: 10.18632/aging.101911] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 04/05/2019] [Indexed: 12/23/2022]
Abstract
Aristolochic acid (AA) is a class of carcinogenic and nephrotoxic nitrophenanthrene carboxylic acids naturally found in Aristolochia plants. These plants have been widely used as herbal medicines and also enter the human food chain as the persistent soil pollutants. It has been known that AA exposure is implicated in multiple cancer types, kidney failure and ovarian dysfunction. However, whether AA exposure would influence the oocyte quality has not yet determined. Here, we document that AAI has the negative effects on the competency of oocyte maturation and fertilization. We show that AAI exposure leads to the oocyte meiotic failure via impairing the meiotic apparatus, displaying a prominently defective spindle assembly, actin dynamics and mitochondrial integrity. AAI exposure also causes the abnormal distribution of cortical granules and ovastacin, which is consistent with the observation that fewer sperm bound to the zona pellucida surrounding the unfertilized AAI-exposed eggs, contributing to the fertilization failure. In addition, AAI exposure induces the increased levels of ROS, DNA damage and early apoptosis in porcine oocytes. Collectively, we demonstrate that AAI exposure perturbs the oocyte meiotic progression and fertilization capacity via disruption of both nuclear maturation and cytoplasmic maturation of oocyte, which might be caused by the excessive oxidative stress-induced DNA damage and apoptosis.
Collapse
Affiliation(s)
- Yu Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiayan ShiYang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yuwei Zhang
- Research Center of Combine Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Yu Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaoyan Shi
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Bo Xiong
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| |
Collapse
|
12
|
Huang YT, Wu TS, Lu CC, Yu FY, Liu BH. Aristolochic acid I interferes with the expression of BLCAP tumor suppressor gene in human cells. Toxicol Lett 2018; 291:129-137. [DOI: 10.1016/j.toxlet.2018.03.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 03/10/2018] [Accepted: 03/28/2018] [Indexed: 10/17/2022]
|
13
|
Hu Y, Wu HL, Yin XL, Gu HW, Xiao R, Wang L, Fang H, Yu RQ. Interference-free spectrofluorometric quantification of aristolochic acid I and aristololactam I in five Chinese herbal medicines using chemical derivatization enhancement and second-order calibration methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 175:229-238. [PMID: 28040573 DOI: 10.1016/j.saa.2016.12.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 12/12/2016] [Accepted: 12/19/2016] [Indexed: 06/06/2023]
Abstract
A rapid interference-free spectrofluorometric method combined with the excitation-emission matrix fluorescence and the second-order calibration methods based on the alternating penalty trilinear decomposition (APTLD) and the self-weighted alternating trilinear decomposition (SWATLD) algorithms, was proposed for the simultaneous determination of nephrotoxic aristolochic acid I (AA-I) and aristololactam I (AL-I) in five Chinese herbal medicines. The method was based on a chemical derivatization that converts the non-fluorescent AA-I to high-fluorescent AL-I, achieving a high sensitive and simultaneous quantification of the analytes. The variables of the derivatization reaction that conducted by using zinc powder in acetose methanol aqueous solution, were studied and optimized for best quantification results of AA-I and AL-I. The satisfactory results of AA-I and AL-I for the spiked recovery assay were achieved with average recoveries in the range of 100.4-103.8% and RMSEPs <0.78ngmL-1, which validate the accuracy and reliability of the proposed method. The contents of AA-I and AL-I in five herbal medicines obtained from the proposed method were also in good accordance with those of the validated LC-MS/MS method. In light of high sensitive fluorescence detection, the limits of detection (LODs) of AA-I and AL-I for the proposed method compare favorably with that of the LC-MS/MS method, with the LODs <0.35 and 0.29ngmL-1, respectively. The proposed strategy based on the APTLD and SWATLD algorithms by virtue of the "second-order advantage", can be considered as an attractive and green alternative for the quantification of AA-I and AL-I in complex herbal medicine matrices without any prior separations and clear-up processes.
Collapse
Affiliation(s)
- Yong Hu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Hai-Long Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China.
| | - Xiao-Li Yin
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Hui-Wen Gu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Rong Xiao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Li Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Huan Fang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Ru-Qin Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China
| |
Collapse
|
14
|
Analysis of aristolochic acids, aristololactams and their analogues using liquid chromatography tandem mass spectrometry. Chin J Nat Med 2016; 14:626-40. [DOI: 10.1016/s1875-5364(16)30074-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Indexed: 11/17/2022]
|
15
|
Chan W, Pavlović NM, Li W, Chan CK, Liu J, Deng K, Wang Y, Milosavljević B, Kostić EN. Quantitation of Aristolochic Acids in Corn, Wheat Grain, and Soil Samples Collected in Serbia: Identifying a Novel Exposure Pathway in the Etiology of Balkan Endemic Nephropathy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:5928-5934. [PMID: 27362729 DOI: 10.1021/acs.jafc.6b02203] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
While to date investigations provided convincing evidence on the role of aristolochic acids (AAs) in the etiology of Balkan endemic nephropathy (BEN) and upper urothelial cancer (UUC), the exposure pathways by which AAs enter human bodies to cause BEN and UUC remain obscure. The goal of this study is to test the hypothesis that environmental pollution by AAs and root uptake of AAs in the polluted soil may be one of the pathways by which AAs enter the human food chain. The hypothesis driving this study was that the decay of Aristolochia clematitis L., a AA-containing herbaceous plant that is found growing widespread in the endemic regions, could release free AAs to the soil, which could be taken up by food crops growing nearby, thereby transferring this potent human nephrotoxin and carcinogen into their edible parts. Using the highly sensitive and selective high-performance liquid chromatography coupled with fluorescence detection method, we identified and quantitated in this study for the first time AAs in corn, wheat grain, and soil samples collected from the endemic village Kutles in Serbia. Our results provide the first direct evidence that food crops and soil in the Balkans are contaminated with AAs. It is possible that the presence of AAs in edible parts of crops originating from the AA-contaminated soil could be one of the major pathways by which humans become exposed to AAs.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Biljana Milosavljević
- Institute for Forensic Medicine Medical Faculty, University of Niš , 18000 Niš, Serbia
| | - Emina N Kostić
- Clinic of Nephrology, Clinical Center Niš , 18000 Niš, Serbia
| |
Collapse
|
16
|
Wang Y, Chan W. Determination of aristolochic acids by high-performance liquid chromatography with fluorescence detection. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:5859-5864. [PMID: 24920127 DOI: 10.1021/jf501609j] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nephrotoxic and carcinogenic aristolochic acids (AAs) are naturally occurring nitrophenanthrene carboxylic acids in the herbal genus Aristolochia. The misuse of AA-containing herbs in preparing slimming drugs has caused hundred of cases of kidney disease in Belgium women in a slimming regime in the early 1990s. Accumulating evidence also suggested that prolong dietary intake of AA-contaminated food is one of the major causes to the Balkan endemic nephropathy that was first observed in the late 1950s. Therefore, analytical methods of high sensitivity are extremely important for safeguarding human exposure to AA-containing herbal medicines, herbal remedies, and food composites. In this paper, we describe the development of a new high-performance liquid chromatography coupled fluorescence detector (HPLC-FLD) method for the sensitive determination of AAs. The method makes use of a novel cysteine-induced denitration reaction that "turns on" the fluorescence of AAs for fluorometric detections. Our results showed that the combination of cysteine-induced denitration and HPLC-FLD analysis allows for sensitive quantification of AA-I and AA-II at detection limits of 27.1 and 25.4 ng/g, respectively. The method was validated and has been successfully applied in quantifying AAs in Chinese herbal medicines.
Collapse
Affiliation(s)
- Yinan Wang
- Department of Chemistry, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong
| | | |
Collapse
|
17
|
Li XW, Morinaga O, Tian M, Uto T, Yu J, Shang MY, Wang X, Cai SQ, Shoyama Y. Development of an Eastern blotting technique for the visual detection of aristolochic acids in Aristolochia and Asarum species by using a monoclonal antibody against aristolochic acids I and II. PHYTOCHEMICAL ANALYSIS : PCA 2013; 24:645-653. [PMID: 23761269 DOI: 10.1002/pca.2448] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2012] [Revised: 04/22/2013] [Accepted: 04/22/2013] [Indexed: 06/02/2023]
Abstract
INTRODUCTION Aristolochic acids (AAs) are naturally occurring nephrotoxicants and human carcinogens. Aristolochic acid I (AA-I) and aristolochic acid II (AA-II) are two important AAs with clear toxicity. OBJECTIVE To obtain a monoclonal antibody (MAb) recognising AA-I and AA-II and develop an Eastern blotting technique for the specific visualisation and easy determination of AA-I and AA-II in plant extracts or tissues of Aristolochia and Asarum species. METHODS A hybridoma secreting MAb against AAs was prepared by cell fusion with splenocytes derived from a mouse immunised with AA-I-keyhole limpet haemocyanin (KLH) conjugate and the myeloma cell line SP2/0-Ag14. AA-I and AA-II were separated by thin-layer chromatography (TLC) and then blotted onto a positively charged polyethersulphone (PES) membrane using a modified carbodiimide method. The resulting membrane-bound AA-protein conjugates were linked to the newly prepared MAb and then to the secondary antibody labelled with peroxidase. 4-Chloro-1-naphthol was then added as the peroxidase substrate for staining. RESULTS MAb 2A10-10B showed a high specificity for AA-I (100%) and AA-II (69.3%) and low cross reactivity (≤ 2.2%) toward analogues that may disrupt detection of AA-I and AA-II in plants. An established Eastern blotting method was applied to the immunohistolocalisation of AA-I and AA-II in dry plant tissues, and this analysis showed that the phelloderm, cortex and phloem of Aristolochia manshuriensis stem may contain higher amounts of total AA-I and AA-II as compared with the pith and xylem. CONCLUSION This method was extremely useful for the visual screening of AA-I and AA-II among easily mistaken herbal medicines.
Collapse
Affiliation(s)
- Xiao-Wei Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, PR China; Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, Nagasaki, 859-3298, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Xu YQ, Li XW, Liu GX, Wang X, Shang MY, Li XM, Cai SQ. Comparative study of the contents of analogues of aristolochic acid in two kinds of Aristolochiae Fructus by high-performance liquid chromatography. J Nat Med 2012; 67:113-22. [PMID: 22484602 DOI: 10.1007/s11418-012-0664-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Accepted: 03/07/2012] [Indexed: 11/30/2022]
Abstract
Aristolochiae Fructus ("Madouling") is derived from the fruits of Aristolochia contorta and A. debilis (Aristolochiaceae). These two species contain potentially nephrotoxic constituents, but are officially used in China. Distinction of constituents and toxicity between these two species remains unclear. A high-performance liquid chromatography method was developed and validated for the simultaneous determination of seven analogues of aristolochic acid (aristolochic acids I, II, IIIa, IVa and VIIa), as well as aristololactams I and II in Aristolochiae Fructus. Chromatographic separation was achieved on a Zorbax SB-C(18) column with a gradient mobile phase comprising acetonitrile and 1 % acetic acid-30 mM triethylamine (20:1, v/v) buffer. Analytes were detected with a diode array detector at 250 and 260 nm. The contents of seven constituents in samples (11 batches of A. contorta fruits, 15 batches of A. debilis fruits and 33 commercial samples of Madouling) were determined. The content of aristolochic acid IVa was higher than that of aristolochic acid VIIa in A. contorta fruits, whereas the opposite was true in A. debilis fruits. This feature can be used to distinguish the two species from each other and identify the resource plant of Madouling. Through a morphological method and a newly found principle based on the ratio AA-IVa/AA-VIIa, we found that the 33 commercial samples collected from 12 provinces in China were all derived from the fruits of A. contorta.
Collapse
Affiliation(s)
- Yu-Qiong Xu
- School of Pharmaceutical Sciences, Peking University, Beijing, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
19
|
Chiang SY, Shih WC, Liao HT, Shu PC, Wey MT, Huang HF, Wu KY. Analysis of urinary aristolactams by on-line solid-phase extraction coupled with liquid chromatography–tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:2494-500. [DOI: 10.1016/j.jchromb.2011.06.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2011] [Revised: 06/27/2011] [Accepted: 06/29/2011] [Indexed: 01/29/2023]
|
20
|
Yu FY, Wu TS, Chen TW, Liu BH. Aristolochic acid I induced oxidative DNA damage associated with glutathione depletion and ERK1/2 activation in human cells. Toxicol In Vitro 2011; 25:810-6. [PMID: 21300145 DOI: 10.1016/j.tiv.2011.01.016] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Revised: 12/29/2010] [Accepted: 01/28/2011] [Indexed: 01/17/2023]
Abstract
Aristolochic acid I (AAI) has been widely found in herbal remedies and linked to the development of nephropathy and urothelial carcinoma in humans. This study elucidated the mechanism of oxidative stress and DNA damage mediated by AAI in human cells. Treatment of human promyelocytic leukemia cells (HL-60) and human renal proximal tubular cells (HK-2) with AAI led to a dose-dependent increase of reactive oxygen species (ROS). AAI also elevated the levels of DNA strand breaks and 8-hydroxy guanosine in HL-60 and HK-2 cells. Antioxidants, including Tiron, N-acetyl-l-cysteine (NAC) and glutathione (GSH), effectively suppressed the AAI-induced ROS and AAI-elicited genotoxicity, indicating that AAI induced the DNA damage through oxidative stress. GSH depletion was also found in AAI-treated cultures and proceeded prior to ROS formation. Exposure of HL-60 cells with AAI activated both ERK1/2 and p38 kinase phosphorylation, while only MEK1/2 inhibitor, U0126, significantly decreased AAI-mediated ROS. Preincubation of cells with thiol-containing compounds (NAC and GSH) inhibited the caspase 3 activity triggered by AAI, but non-thiol Tiron did not show a similar effect. This study demonstrated that AAI treatment results in oxidative stress-related DNA damage through GSH depletion and ERK1/2 activation; AAI-induced apoptosis is associated with GSH loss, but is independent of ROS generation.
Collapse
Affiliation(s)
- Feng-Yih Yu
- Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan
| | | | | | | |
Collapse
|
21
|
Liu MC, Lin TH, Wu TS, Yu FY, Lu CC, Liu BH. Aristolochic acid I suppressed iNOS gene expression and NF-κB activation in stimulated macrophage cells. Toxicol Lett 2011; 202:93-9. [PMID: 21291967 DOI: 10.1016/j.toxlet.2011.01.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 12/15/2010] [Accepted: 01/25/2011] [Indexed: 11/25/2022]
Abstract
Aristolochic acid I (AAI) is a phytotoxin that has been found in various herbal remedies and linked to the development of human carcinogenesis. To investigate the playing role of AAI in the function of macrophages, lipopolysaccharide (LPS)-stimulated macrophage cells RAW264.7 were employed as a model to examine the effect of AAI on the expression of the inducible nitric oxide synthase (iNOS) gene. AAI reduced the expression of iNOS mRNA and protein, as well as the production of NO in LPS-stimulated macrophages. Treatment of transfected macrophages with AAI effectively suppressed the luciferase activities of the iNOS promoter which is activated by LPS. The results of promoter deletion and electrophoretic gel mobility shift assay (EMSA) indicated that the NF-κB binding site at nucleotides -86 to -76 was the major site that was most responsible for the inhibitory effect of AAI. Moreover, the presence of AAI substantially reduced the phosphorylation of the inhibitory κBα (IκBα) protein in LPS-stimulated cultures. AAI also down-regulated the LPS-induction of TNF-α, a NF-κB regulated gene. On the other hand, AAI did not modulate the luciferase activities of reporter construct that contained iNOS mRNA 3'-UTR. Taken together, the data herein suggest that in activated macrophages, AAI effectively down-regulated the expression of iNOS gene by interfering with the activation of NF-κB at the transcription level. The stability of iNOS mRNA was not the target of AAI inhibition.
Collapse
Affiliation(s)
- Ming-Chao Liu
- Department of Biomedical Sciences, Chung Shan Medical University, No. 110, Chien-Kuo N. Road, Section 1, Taichung 40203, Taiwan
| | | | | | | | | | | |
Collapse
|
22
|
Guo L, Yue H, Cai Z. A novel pre-column fluorescent derivatization method for the sensitive determination of aristolochic acids in medicinal herbs by high-performance liquid chromatography with fluorescence detection. J Pharm Biomed Anal 2010; 53:37-42. [DOI: 10.1016/j.jpba.2010.03.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2010] [Revised: 03/06/2010] [Accepted: 03/11/2010] [Indexed: 10/19/2022]
|
23
|
He SP, Tan GY, Li G, Tan WM, Nan TG, Wang BM, Li ZH, Li QX. Development of a sensitive monoclonal antibody-based enzyme-linked immunosorbent assay for the antimalaria active ingredient artemisinin in the Chinese herb Artemisia annua L. Anal Bioanal Chem 2008; 393:1297-303. [PMID: 19066864 DOI: 10.1007/s00216-008-2527-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 11/11/2008] [Accepted: 11/12/2008] [Indexed: 11/24/2022]
Abstract
Artemisinin is an endoperoxide sesquiterpene lactone isolated from the Chinese medicinal plant Artemisia annua L. It has been widely used in South-East Asia and Africa as an effective drug against sensitive and multidrug-resistant Plasmodium falciparum malaria. A monoclonal antibody (mAb), designated as 3H2, was generated with artesunate-bovine serum albumin conjugate as the immunogen. mAb 3H2 was used to develop a highly sensitive and specific indirect competitive enzyme-linked immunosorbent assay (icELISA) for artemisinin. The concentration of analyte producing 50% of inhibition (IC(50)) and the working range of the icELISA were 1.3 and 0.2-5.8 ng/mL, respectively. The mAb 3H2 recognized the artemisinin analogs artesunate, dihydroartemisinin, and artemether with cross-reactivity of 650%, 57%, and 3%, respectively, but negligibly recognized deoxyartemisinin and the artemisinin precursors arteannuin B and artemisinic acid. The average recoveries of artemisinin fortified in A. annua samples at concentrations from 156 to 5,000 microg/g determined by icELISA ranged from 91% to 98%. The icELISA was applied for the determination of artemisinin in different wild A. annua samples and the results were confirmed by high-performance liquid chromatography (HPLC) analysis. The correlation coefficient (R(2)) between the two assays was larger than 0.99, demonstrating a good agreement between the icELISA and HPLC results. This ELISA is suitable for quality assurance of A. annua L. materials.
Collapse
Affiliation(s)
- Su-Ping He
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Wang Y, Jin Y, Zhou C, Qu H, Cheng Y. Discovering active compounds from mixture of natural products by data mining approach. Med Biol Eng Comput 2008; 46:605-11. [DOI: 10.1007/s11517-008-0323-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2007] [Accepted: 02/19/2008] [Indexed: 10/22/2022]
|