1
|
Li X, Wang Y, Hu S, Zong W, Liu R. New mechanistic insights of nanoplastics synergistic cadmium induced overactivation of trypsin: Joint analysis from protein multi-level conformational changes and computational modeling. JOURNAL OF HAZARDOUS MATERIALS 2024; 480:135817. [PMID: 39303611 DOI: 10.1016/j.jhazmat.2024.135817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2024] [Revised: 09/09/2024] [Accepted: 09/10/2024] [Indexed: 09/22/2024]
Abstract
Nanoplastics (NPs) are emerging global contaminants that can exacerbate the animal toxicity and cytotoxicity of cadmium (Cd). However, the mechanisms by which NPs influence the toxic effects of Cd on key functional proteins within the body remain unknown. In this study, trypsin, a protein that is prone to coexist with NPs in the digestive tract, was selected as the target protein. The effects and mechanisms of NPs on Cd2+-induced structural damage at multiple levels and alterations in the biological function of trypsin were investigated using multi-spectroscopy techniques, enzyme activity assays, and computational modeling. Results indicated that the Cd2+-induced decrease and red shift of the trypsin backbone peak were exacerbated by the presence of NPs, leading to more serve backbone loosening. Furthermore, compared to Cd2+, NPs@Cd2+ caused a more pronounced reduction in the α-helix content of trypsin. These structural changes led to the opening of the trypsin pocket and the overactivation of the enzyme (NPs@Cd2+: 227.22%; Cd2+: 53.35%). Ultimately, the formation of a "protein corona" around NPs@Cd2+ and the metal contact of Cd2+ to the trypsin surface were identified as the mechanisms by which NPs enhanced the protein toxicity of Cd2+. This study elucidates, for the first time, the effects and underlying mechanisms of NPs on the toxicity of key functional proteins of Cd2+. These findings offer novel mechanistic insights and critical evidence essential for evaluating the risks associated with NPs.
Collapse
Affiliation(s)
- Xiangxiang Li
- School of Environmental Science and Engineering, China - America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Yanzhe Wang
- School of Environmental Science and Engineering, China - America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Shaoyang Hu
- School of Environmental Science and Engineering, China - America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Wansong Zong
- College of Geography and Environment, Shandong Normal University, 88# East Wenhua Road, Jinan, Shandong 250014, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, China - America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China.
| |
Collapse
|
2
|
Cui Z, He F, Li X, Li Y, Huo C, Wang H, Qi Y, Tian G, Zong W, Liu R. Response pathways of superoxide dismutase and catalase under the regulation of triclocarban-triggered oxidative stress in Eisenia foetida: Comprehensive mechanism analysis based on cytotoxicity and binding model. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 854:158821. [PMID: 36116645 DOI: 10.1016/j.scitotenv.2022.158821] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 06/15/2023]
Abstract
Triclocarban (TCC) is an emerging environmental contaminant, posing potential ecological risks. Displaying a high accumulation effect and 120-day half-life in the soil environment, the toxic effects of TCC to soil organisms have been widely reported. Previous studies have confirmed that TCC can induce the oxidative stress and changes in superoxide dismutase (SOD) and catalase (CAT) activities in earthworms, but the underlying mechanisms of oxidative stress and disorder in antioxidant enzyme activities induced by TCC have not yet been elucidated. Here, we explored the multiple response mechanisms of SOD and CAT under the regulation of oxidative stress induced by TCC. Results indicated that higher-dose (0-2.0 mg/L) TCC exposure triggered the overproduction of ROS in Eisenia foetida coelomocytes, causing oxidative damage and a decrease in cell viability that was response to ROS accumulation. The TCC-induced inhibition of intracellular SOD/CAT activity was found under the regulation of oxidative stress (SOD: 29.2 %; CAT: 18.5 %), and this effect was blunted by antioxidant melatonin. At the same time, the interaction between antioxidative enzymes and TCC driven by various forces (SOD: electrostatic interactions; CAT: van der Waals forces and hydrogen bonding) led to inhibited SOD activity (9.84 %) and enhanced CAT activity (17.5 %). Then, to elucidate the binding mode of TCC, we explored the changes in SOD and CAT structure (protein backbone and secondary structure), the microenvironment of aromatic amino acids, and aggregation behavior through multispectral techniques. Molecular docking results showed that TCC inhibited SOD activity in a substrate competitive manner and enhanced CAT activity by the stabilizing effects of TCC on the heme groups. Collectively, this study reveals the response mechanisms of SOD/CAT under the regulation of TCC-triggered oxidative stress and shed a new light on revealing the toxic pathways of exogenous pollutants on antioxidant-related proteins function.
Collapse
Affiliation(s)
- Zhihan Cui
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Falin He
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Xiangxiang Li
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Yuze Li
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Chengqian Huo
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Hao Wang
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Yuntao Qi
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Guang Tian
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Wansong Zong
- College of Geography and Environment, Shandong Normal University, 88# East Wenhua Road, Jinan, Shandong 250014, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China.
| |
Collapse
|
3
|
Li X, Chu S, Song Z, He F, Cui Z, Liu R. Discrepancy of apoptotic events in mouse hepatocytes and catalase performance: Size-dependent cellular and molecular toxicity of ultrafine carbon black. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126781. [PMID: 34396976 DOI: 10.1016/j.jhazmat.2021.126781] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/17/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
The diversification of the production process and application of ultrafine carbon black (UFCB), one of the nanomaterials, make the difference in particle sizes that exposed to environment. Currently, few size-dependent toxicity studies of UFCB pay attention to targeted effects on detoxification organs. And there is a research gap in the size-dependent molecular toxicity of UFCB. Based on this, mouse hepatocytes and catalase (CAT) were used as targeted receptors for UFCB size-dependent cellular and molecular toxicity studies. Results indicate that UFCB13 nm induced higher ROS and lipid peroxidation levels. And the cell viability decreased to 22.5%, which is sharp contrast to UFCB50 nm (45.3%) and UFCB95 nm (55.1%). Mitochondrial dysfunction and a 25.2% early apoptosis rate are the further manifestation of the stronger cytotoxicity of UFCB13 nm. At the molecular level, the exposure of UFCB with better dispersity resulted in more significant changes in the CAT backbone and secondary structure, fluorescence sensitization and enzyme function inhibition. The combined experiments show that the cellular uptake and dispersity of UFCB are the dominating factors for the discrepancy in size-dependent cellular and molecular toxicity, respectively. This study provides a theoretical basis for the necessary circumvention and substitution of UFCB in engineering applications.
Collapse
Affiliation(s)
- Xiangxiang Li
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Shanshan Chu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Zhaosheng Song
- Jining Ecological Environment Technology Guarantee Center, D301 Jining Provincial Games Command Center, 272000 PR China
| | - Falin He
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Zhihan Cui
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China.
| |
Collapse
|
4
|
Zhou H, Li M, Diao N, Wu S, Wang J, Wu P. A removing resonance fluorescence method for light scattering spectroscopy. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2021.139244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
5
|
|
6
|
Zhao L, Zhang H, Zhang J, Zong W, Liu R. Spectroscopic characterization, calorimetric study and molecular docking to evaluate the bioconjugation of maltol with hemoglobin. LUMINESCENCE 2019; 34:290-296. [PMID: 30723991 DOI: 10.1002/bio.3607] [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: 08/20/2018] [Revised: 11/01/2018] [Accepted: 12/06/2018] [Indexed: 11/12/2022]
Abstract
Maltol, a food additive, is extensively used in our daily life. To date, its biological safety is still debated. In this article, binding interaction of maltol with bovine hemoglobin (BHb), an important functional protein, was studied by molecular docking research and spectroscopic and calorimetric measurements. We found that maltol could cause structural changes of BHb. By interacting with Glu 101 (1.27 Å) and Lys 104 (2.49 Å) residues, maltol changed the cavity structure and induced a microenvironment change around tryptophan (Trp) residue. Thermodynamic parameters obtained from isothermal titration calorimetry (ITC) measurement showed that hydrophobic forces were the main forces existing in this system. The association constant of K (8.0 ± 3.4 × 104 M-1 ) shows the mild ligand-protein binding for maltol with BHb. The α-helix amount in BHb increased (59.6-62.6%) with different concentrations of maltol and the intrinsic fluorescence intensity was quenched by maltol, indicating the conformation changes and denaturation of BHb. This work presents the interactions of maltol with BHb at the molecular level and obtains evidence that maltol induces adverse effects to proteins in vitro.
Collapse
Affiliation(s)
- Lining Zhao
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, Qingdao, P. R. China
| | - Hao Zhang
- Laboratory of Immunology for Environment and Health, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Science), Jinan, P. R. China
| | - Jing Zhang
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, Qingdao, P. R. China
| | - Wansong Zong
- College of Population, Resources and Environment, Shandong Normal University, Jinan, P. R. China
| | - Rutao Liu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, Qingdao, P. R. China
| |
Collapse
|
7
|
Hu S, Yuan D, Liu Y, Zhao L, Guo H, Niu Q, Zong W, Liu R. The toxic effects of alizarin red S on catalase at the molecular level. RSC Adv 2019; 9:33368-33377. [PMID: 35529134 PMCID: PMC9073274 DOI: 10.1039/c9ra02986a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 10/03/2019] [Indexed: 11/21/2022] Open
Abstract
Alizarin red S (ARS) is a widespread mordant dye derived from alizarin. However, it was reported to be mutagenic and carcinogenic probably because it could induce oxidative damages in organisms. Catalase (CAT) is an important antioxidant enzyme defensing oxidative damages induced by xenobiotics. The underlying mechanisms of ARS interacting with CAT have not been clarified yet. This study is conducted to characterize the functional and conformational changes on CAT by ARS and the binding details to further investigate their interaction mechanisms. Under exposure of ARS at 5 μM, CAT activity was significantly decreased to 76.2%. Inhibition of CAT probably resulted in promotion of intracellular oxidative stress and pro-oxidant property of ARS. The interaction between ARS and CAT was proved to be spontaneous and exothermic. However, limited structural changes were observed according to spectroscopic results. Results showed that ARS prefers to bind with residues buried in the active site and could alter the activity of CAT, which were agree with the molecular docking results. This work proves the adverse effects of ARS on CAT mainly at molecular level and further highlights its potential risks to heath. Alizarin red S is confirmed to be toxic to catalase at molecular level attributing to the structural and functional changes of catalase.![]()
Collapse
Affiliation(s)
- Shimeng Hu
- School of Environmental Science and Engineering
- Shandong University
- America CRC for Environment & Health
- Shandong Province
- Qingdao
| | - Dong Yuan
- Department of Chemistry and Chemical Engineering
- Qilu Normal University
- Jinan 250013
- P. R. China
| | - Yang Liu
- Department of Chemistry and Chemical Engineering
- Qilu Normal University
- Jinan 250013
- P. R. China
| | - Lining Zhao
- School of Environmental Science and Engineering
- Shandong University
- America CRC for Environment & Health
- Shandong Province
- Qingdao
| | - Hongli Guo
- School of Environmental Science and Engineering
- Shandong University
- America CRC for Environment & Health
- Shandong Province
- Qingdao
| | - Qigui Niu
- School of Environmental Science and Engineering
- Shandong University
- America CRC for Environment & Health
- Shandong Province
- Qingdao
| | - Wansong Zong
- College of Population, Resources and Environment
- Shandong Normal University
- Jinan 250014
- P. R. China
| | - Rutao Liu
- School of Environmental Science and Engineering
- Shandong University
- America CRC for Environment & Health
- Shandong Province
- Qingdao
| |
Collapse
|
8
|
Zhang X, Zhang R, Zong W, Liu R. Interactions of three bisphenol analogues with hemoglobin investigated by spectroscopy and molecular docking. J Mol Recognit 2018; 32:e2758. [DOI: 10.1002/jmr.2758] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 06/21/2018] [Accepted: 06/30/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Xun Zhang
- School of Environmental Science and EngineeringShandong University, China‐America CRC for Environment & Health, Shandong Province Qingdao Shandong China
| | - Rui Zhang
- School of Environmental Science and EngineeringShandong University, China‐America CRC for Environment & Health, Shandong Province Qingdao Shandong China
| | - Wansong Zong
- College of Population, Resources and EnvironmentShandong Normal University Jinan Shandong China
| | - Rutao Liu
- School of Environmental Science and EngineeringShandong University, China‐America CRC for Environment & Health, Shandong Province Qingdao Shandong China
| |
Collapse
|
9
|
Zhao L, Hu S, Meng Q, Xu M, Zhang H, Liu R. The binding interaction between cadmium-based, aqueous-phase quantum dots with Candida rugosa
lipase. J Mol Recognit 2018; 31:e2712. [DOI: 10.1002/jmr.2712] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 01/24/2018] [Accepted: 02/18/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Lining Zhao
- School of Environmental Science and Engineering; Shandong University, China-America CRC for Environment & Health, Shandong Province; Jinan P. R. China
| | - Shimeng Hu
- School of Environmental Science and Engineering; Shandong University, China-America CRC for Environment & Health, Shandong Province; Jinan P. R. China
| | - Qiwei Meng
- School of Environmental Science and Engineering; Shandong University, China-America CRC for Environment & Health, Shandong Province; Jinan P. R. China
| | - Mengchen Xu
- School of Environmental Science and Engineering; Shandong University, China-America CRC for Environment & Health, Shandong Province; Jinan P. R. China
| | - Hao Zhang
- Laboratory of Immunology for Environment and Health, Shandong Analysis and Test Center; Qilu University of Technology (Shandong Academy of Sciences); Jinan China
| | - Rutao Liu
- School of Environmental Science and Engineering; Shandong University, China-America CRC for Environment & Health, Shandong Province; Jinan P. R. China
| |
Collapse
|
10
|
Shamsipur M, Memari Z, Ganjali MR, Norouzi P, Faridbod F. Highly sensitive gold nanoparticles-based optical sensing of DNA hybridization using bis(8-hydroxyquinoline-5-solphonate)cerium(III) chloride as a novel fluorescence probe. J Pharm Biomed Anal 2016; 118:356-362. [DOI: 10.1016/j.jpba.2015.10.046] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 10/31/2015] [Accepted: 10/31/2015] [Indexed: 02/04/2023]
|
11
|
A highly sensitive label-free resonance light scattering assay of carcinoembryonic antigen based on immune complexes. Anal Chim Acta 2012; 747:99-105. [DOI: 10.1016/j.aca.2012.08.033] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 08/13/2012] [Accepted: 08/17/2012] [Indexed: 11/17/2022]
|
12
|
Bi S, Wang Y, Pang B, Yan L, Wang T. An investigation on the interaction of DNA with hesperetin/apigenin in the presence of CTAB by resonance Rayleigh light scattering technique and its analytical application. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 90:158-164. [PMID: 22336048 DOI: 10.1016/j.saa.2012.01.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 12/31/2011] [Accepted: 01/16/2012] [Indexed: 05/31/2023]
Abstract
Two new systems for measuring DNA at nanogram levels by a resonance Rayleigh light scattering (RLS) technique with a common spectrofluorometer were proposed. In the presence of cetyltrimethylammonium bromide (CTAB), the interaction of DNA with hesperetin and apigenin (two effective components of Chinese herbal medicine) could enhance RLS signals with the maximum peak at 363 and 433 nm respectively. The enhanced intensity of RLS was directly proportional to the concentration of DNA in the range of 0.022-4.4 μg mL(-1) for DNA-CTAB-hesperetin system and 0.013-4.4 μg mL(-1) for DNA-CTAB-apigenin system. The detection limit was 2.34 ng mL(-1) and 2.97 ng mL(-1) respectively. Synthetic samples were measured satisfactorily. The recovery of DNA-CTAB-hesperetin system was 97.3-101.9% and that of DNA-CTAB-apigenin system was 101.2-109.5%.
Collapse
Affiliation(s)
- Shuyun Bi
- College of Chemistry, Changchun Normal University, Changchun, PR China.
| | | | | | | | | |
Collapse
|
13
|
Azab HA, Hussein BHM, El-Falouji AI. Synthesis of novel Eu(III) luminescent probe based on 9- acridinecarboxylic acid skelton for sensing of ds-DNA. J Fluoresc 2011; 22:639-49. [PMID: 22065175 DOI: 10.1007/s10895-011-1000-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2011] [Accepted: 10/14/2011] [Indexed: 10/15/2022]
Abstract
Eu(III)-9-acridinecarboxylate (9-ACA) complex was synthesized and characterized by elemental analysis, conductivity measurement, IR spectroscopy, thermal analysis, mass spectroscopy, (1)H-NMR, fluorescence and ultraviolet spectra. The results indicated that the composition of this complex is [Eu(III)-(9-ACA)(2)(NCS)(C(2)H(5)OH)(2)] 2.5 H(2)O and the oxygen of the carbonyl group coordinated to Eu(III). The interaction between the complex with nucleotides guanosine 5'- monophosphate (5'-GMP), adenosine 5'-diphosphates (5'-ADP), inosine (5'-IMP) and CT-DNA was studied by fluorescence spectroscopy. The fluorescence intensity of Eu(III)-9-acridinecarboxylate complex was enhanced with the addition of CT-DNA. The effect of pH values on the fluorescence intensity of Eu(III) complex was investigated. Under experimental conditions, the linear range was 9-50 ng mL(-1) for calf thymus DNA (CT- DNA) and the corresponding detection limit was 5 ng mL(-1). The results showed that Eu(III)-(9-ACA)(2) complex binds to CT-DNA with stability constant of 2.41 × 10(4) M.
Collapse
Affiliation(s)
- Hassan A Azab
- Chemistry Department, Faculty of Science, Suez Canal University, Ismailia, Egypt.
| | | | | |
Collapse
|
14
|
He Y, Yan Q, Song G, Chen J. Spectral study of interaction between poly(L-lysine)-poly(ethylene glycol)-poly(L-lysine) and nucleic acids. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:1431-1438. [PMID: 21516339 DOI: 10.1007/s10856-011-4314-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Accepted: 04/03/2011] [Indexed: 05/30/2023]
Abstract
Polymer-DNA interactions have attracted considerable interests due to their important application in DNA transfection and cellular drug delivery technologies. In this work, a new detection assay for DNA is proposed with a tri-block copolymer poly(L-lysine)-poly(ethylene glycol)-poly(L-lysine) by resonance light scattering technique with the linear ranges from 0.0656 to 6.56 μg ml⁻¹. The detection limit for DNA is 0.42 ng ml⁻¹. Most coexisting substances do not interfere in the detection. UV-spectra and FTIR-spectra were employed to demonstrate the mechanisms of the interaction that the conformation of the DNA changes because the microenvironment of DNA changes.
Collapse
Affiliation(s)
- Yu He
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Function Molecules, Hubei University, Wuhan 430062, People's Republic of China
| | | | | | | |
Collapse
|
15
|
Zhou H, Wu X, Meng F, Yang J, Wang M. Nucleic acids determination using the complex of eriochrome black T and silver nanoparticles in a resonance light scattering technique. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 78:681-686. [PMID: 21183399 DOI: 10.1016/j.saa.2010.11.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Revised: 11/15/2010] [Accepted: 11/30/2010] [Indexed: 05/30/2023]
Abstract
A novel method for the determination of nucleic acids by using silver nanoparticle (AgNPs)-eriochrome black T (EBT) as a resonance light scattering (RLS) probe has been developed. Under optimum conditions, there are linear relationships between the quenching extent of RLS intensity and the concentration of nucleic acids in the range of 4.0×10(-9)-4.0×10(-7), 4.0×10(-7)-1.6×10(-6) g mL(-1) for fish sperm DNA (fsDNA) and 4.0×10(-8)-2.0×10(-6) g mL(-1) for yeast RNA (yRNA). Their detection limits (S/N=3) are 2.0 ng mL(-1) and 21 ng mL(-1), respectively. The results indicate that AgNPs can form wirelike aggregates and nanoslices in the presence of the EBT. Whereas, when nucleic acids are added into the AgNPs-EBT system, the dynamic balance of AgNPs-EBT system is destroyed and the nanoparticles undergo dispersion again, leading to the RLS intensity of AgNPs-EBT system quenching. Meanwhile, the conformation of fsDNA is changed by the synergistic effect of AgNPs and EBT.
Collapse
Affiliation(s)
- Haiping Zhou
- Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Shanda Nanlu 27#, Jinan 250100, PR China
| | | | | | | | | |
Collapse
|
16
|
Hui-Ling W, Wen-You L, Xi-Wen H, Peng-Yuan Y, Hong L. Interactions of Night Blue with Nucleic Acids and Determination of Nucleic Acids Using Resonance Light Scattering Technique. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20030210318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
17
|
|
18
|
Wu M, Wu W, Lian X, Lin X, Xie Z. Synthesis of a novel fluorescent probe and investigation on its interaction with nucleic acid and analytical application. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2008; 71:1333-1340. [PMID: 18511336 DOI: 10.1016/j.saa.2008.04.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2008] [Revised: 03/27/2008] [Accepted: 04/14/2008] [Indexed: 05/26/2023]
Abstract
A novel fluorescent probe N-(N-(2-(4-morpholinyl)ethyl)-4-acridinecarboxamide)-alpha-alanine (N-(N-(ME)-4-ACA)-alpha-ALA) was synthesized. The structure was characterized by 1H NMR, MS, elemental analysis, fluorescent and ultraviolet spectra. This new compound exhibited high binding affinity to DNA, intense fluorescence and high water solubility. Experiment indicated that the fluorescent intensity was quenched when DNA was added. A method for DNA determination based on the quenching fluorescence (lambda(ex)=258nm, lambda(em)=451nm) of N-(N-(ME)-4-ACA)-alpha-ALA was established. Under optimal conditions (pH 7.2, CN-(N-(ME)-4-ACA)-alpha-ALA)=3 x 10(-6) mol L(-1)), the linear range is 0.1-4.0 microg mL(-1) for both fish semen (fsDNA) and calf thymus DNA (ct-DNA). The corresponding determination limits are 4.6 ng mL(-1) for fsDNA and 5.1 ng mL(-1) for ct-DNA, respectively. The relative standard deviation is 1.0%. Thus this compound can be used as a DNA fluorescent probe. The experiments proved that the interaction mode between N-(N-(ME)-4-ACA)-alpha-ALA and DNA was groove binding. The modified Rosenthal's graphical method gave the binding constant of 1.0 x 10(6) L mol(-1) and a binding size of 0.31 base pairs per bound drug molecule.
Collapse
Affiliation(s)
- Menghui Wu
- Department of Chemistry, Fuzhou University, Fuzhou 350002, China
| | | | | | | | | |
Collapse
|
19
|
Xiao X, Wang Y, Chen Z, Li Q, Liu Z, Li G, Lü C, Xue J, Li Y. Resonance light scattering method for the determination of anionic surfactant with acridine orange. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2008; 71:398-402. [PMID: 18280203 DOI: 10.1016/j.saa.2008.01.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2007] [Revised: 12/27/2007] [Accepted: 01/01/2008] [Indexed: 05/25/2023]
Abstract
The resonance Rayleigh scattering (RRS), second-order scattering (SOS) and frequency-double scattering (FDS) spectra of sodium dodecylbenzene sulfonate (SDBS) (anionic surfactant (AS)) with acridine orange (AO) system were studied. Experimental results showed that when lambda(em) = lambda(ex) = 537 nm, the RRS peak of AO was greatly enhanced with the increase of SDBS concentration at a pH range of 1.8-4.0. The linear range of the calibration curve for SDBS was 0.028-8.71 mg L(-1) with a detection limit of 8.36 microg L(-1) when the AO concentration was 2.5 x 10(-5)mol L(-1). The method has been applied to the determination of trace amount of AS in environmental water samples with satisfactory results. In addition, when lambda(em) = 321 nm and lambda(ex) = 642 nm, the intensity of FDS was proportional to the SDBS concentration ranging from 0.014 to 8.71 mg L(-1) and the correlation coefficient was 0.993 with a detection limit of 4.31 microg L(-1); when lambda(em) = 642 nm and lambda(ex) = 321 nm, the intensity of SOS was proportional to the SDBS concentration ranging from 0.050 to 8.71 mg L(-1), and the correlation coefficient was 0.993 with a detection limit of 14.9 microg L(-1).
Collapse
Affiliation(s)
- Xilin Xiao
- College of Public Health, University of South China, Hengyang 421001, PR China.
| | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Interaction among Cadmium Sulfide Nanoparticles, Acridine Orange, and Deoxyribonucleic Acid in Fluorescence Spectra and a Method for Deoxyribonucleic Acid Determination. J Fluoresc 2008; 18:727-32. [DOI: 10.1007/s10895-008-0335-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2007] [Accepted: 01/30/2008] [Indexed: 10/22/2022]
|
21
|
Chen Y, Gao D, Tian Y, Ai P, Zhang H, Yu A. Resonance light scattering technique for the determination of proteins with polymethacrylic acid (PMAA). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2007; 67:1126-30. [PMID: 17097337 DOI: 10.1016/j.saa.2006.09.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2006] [Revised: 09/22/2006] [Accepted: 09/30/2006] [Indexed: 05/12/2023]
Abstract
As a resonance light scattering (RLS) probe, the polyelectrolyte polymethacrylic acid (PMAA) was applied in this assay. The bovine serum albumin (BSA) and human serum albumin (HSA) were determined by the electrostatic interaction of PMAA and proteins. At pH 3.8 Na(2)HPO(4)-citric acid buffer solution, the RLS intensities of PMAA-BSA (HSA) system were greatly enhanced. The characteristic peaks were appeared at the wavelength 320, 546 and 594 nm. The optimization conditions of the reaction were also examined and selected. Under the selected conditions, the RLS intensities were proportional to the protein concentrations in the range of (0.0200-2.00) x 10(-6) mol/L for BSA and (0.0200-2.40) x 10(-6) mol/L for HSA. The influences of some foreign substances were also examined. The synthetic samples containing proteins and some real samples were analyzed and the results obtained were satisfactory.
Collapse
Affiliation(s)
- Yanhua Chen
- College of Chemistry, Jilin University, Changchun 130012, PR China
| | | | | | | | | | | |
Collapse
|
22
|
Wang F, Yang J, Wu X, Wang F, Ding H. Investigation of the interaction between curcumin and nucleic acids in the presence of CTAB. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2007; 67:385-90. [PMID: 17005442 DOI: 10.1016/j.saa.2006.07.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2006] [Revised: 07/15/2006] [Accepted: 07/19/2006] [Indexed: 05/12/2023]
Abstract
It is found that nucleic acid can enhance the resonance light scattering (RLS) enhancement effect of curcumin (CU) in the presence of cationic surfactant cetyltrimethylammonium bromide (CTAB). The investigation indicates that in BR (pH 4.3) buffer, both the positive CTAB and negative yeast RNA (yRNA) combine and form a positive large association, then which is bound on the two carbon atoms of the carbonyls of CU through hydrogen bond and hydrophobic force and form CU-CTAB-yRNA ternary complex, resulting in the RLS enhancement of this system. Based on it, a sensitive method for determination of nucleic acids at ngml(-1) is established.
Collapse
Affiliation(s)
- Feng Wang
- Key Lab of Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China
| | | | | | | | | |
Collapse
|
23
|
Xiao JB, Yang CS, Ren FL, Jiang XY, Xu M. Rapid determination of ciprofloxacin lactate in drugs by the Rayleigh light scattering technique. MEASUREMENT SCIENCE AND TECHNOLOGY 2007. [DOI: 10.1088/0957-0233/18/3/039] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
24
|
Cui F, Wang L, Cui Y. Determination of bismuth in pharmaceutical products using methyltriphenylphosphonium bromide as a molecular probe by resonance light scattering technique. J Pharm Biomed Anal 2007; 43:1033-8. [PMID: 17184952 DOI: 10.1016/j.jpba.2006.10.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2006] [Revised: 09/16/2006] [Accepted: 10/05/2006] [Indexed: 11/16/2022]
Abstract
A method for the determination of bismuth in pharmaceutical products using methyltriphenylphosphonium bromide as a molecular probe based on the resonance light scattering (RLS) technique was developed. In the presence of Tween-20, bismuth reacts with a large excess of I(-) to form [BiI(4)](-), which further reacts with methyltriphenylphosphonium bromide (MTPB) to form an ion-association compound. This resulted in a significant enhancement of RLS intensity and the appearance of the corresponding RLS spectral characteristics. The enhanced RLS intensity was directly proportional to the concentration of Bi(III) in the range of 0.001-1.50 microg/ml for the system. The detection limit was 0.98 ng/ml. The characteristics of RLS spectra of the complex, the optimum conditions and the influencing factors were investigated. The method has high selectivity and was applied to the determination of Bi(III) in pharmaceutical products with satisfactory results, which were in agreement with those of the official method and atomic absorbance spectrometry (AAS).
Collapse
Affiliation(s)
- Fengling Cui
- School of Chemistry and Environmental Science, Key Laboratory for Environmental Pollution Control Technology of Henan Province, Henan Normal University, Xinxiang 453007, PR China.
| | | | | |
Collapse
|
25
|
Gao D, Tian Y, Liang F, Bi S, Li T, Chen Y, Zhang H, Yu A. Investigation on hyperin-cetyltrimethylammonium bromide-fibronectin system by resonance light-scattering technique. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2007; 66:52-7. [PMID: 16822714 DOI: 10.1016/j.saa.2006.02.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2005] [Accepted: 02/15/2006] [Indexed: 05/10/2023]
Abstract
A simple, highly sensitive assay for fibronectin (Fn) was reported using resonance light-scattering (RLS) technique based on the enhanced RLS intensity of hyperin-cetyltrimethylammonium bromide (CTMAB)-Fn system. The interaction system of hyperin-CTMAB-Fn was investigated using spectral methods. Mechanistic investigations show that the main reason of the enhanced RLS intensity of Fn is the formation of three-component complex (hyperin-CTMAB-Fn), in which CTMAB acts as a bridge between hyperin and Fn. The effects of pH, surfactant, concentration of CTMAB and hyperin, incubation time and foreign substances on the enhancement of RLS intensity were studied. Under the optimum conditions, the enhancement of RLS intensity is in proportion to the concentration of Fn in the range of 1.9-248ng/ml. The synthetic samples containing Fn were analyzed and results obtained were satisfied.
Collapse
Affiliation(s)
- Dejiang Gao
- College of Chemistry, Jilin University, Changchun 130012, China
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Ou-Yang YF, Wang YS, Mi XW, Xue JH, Wang Y. Resonance Light Scattering of 1-Hydroxypyrene-Ethyl Violet-Anionic Surfactant System and Its Analytical Application. ANAL SCI 2007; 23:533-7. [PMID: 17495397 DOI: 10.2116/analsci.23.533] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A novel method for the rapid and sensitive analysis of 1-hydroxypyrene (1-OHP) in human urine has been developed that uses a resonance light scattering (RLS) technique. The assay was based on the interaction of ethyl violet (EV) with 1-hydroxypyrene to form an ion-associate complex, which resulted in the enhancement of RLS intensity and the appearance of new RLS spectra. In the presence of anionic surfactant, the maximum RLS peak of the system was located at 396 nm at pH 8.0. Under the optimum conditions, it was found that the enhanced RLS intensity was directly proportional to the concentration of 1-hydroxypyrene in the range of 4.0 - 982 microg l(-1). The detection limit was 1.2 microg l(-1) and the recoveries of 1-hydroxypyrene were 92.8 - 102.3% (n = 6). The proposed method was successfully applied to the analysis of human urine samples. The results of 1-hydroxypyrene were in agreement with those obtained by the method of high-performance liquid chromatography.
Collapse
|
27
|
Lai S, Chang X, Tian L, Wang S, Bai Y, Zhai Y. Fluorometric determination of DNA using nano-SiO2 particles as an effective dispersant and stabilizer for acridine orange. Mikrochim Acta 2006. [DOI: 10.1007/s00604-006-0669-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
28
|
Fang F, Zheng H, Li L, Wu Y, Chen J, Zhuo S, Zhu C. Determination of nucleic acids with a near infrared cyanine dye using resonance light scattering technique. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2006; 64:698-702. [PMID: 16650797 DOI: 10.1016/j.saa.2005.07.071] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2005] [Accepted: 07/25/2005] [Indexed: 05/08/2023]
Abstract
A new method for the determination of nucleic acids has been developed based on the enhancement effect of resonance light scattering (RLS) with a cationic near infrared (NIR) cyanine dye. Under the optimal conditions, the enhanced RLS intensity at 823 nm is proportional to the concentration of nucleic acids in the range of 0-400 ng mL-1 for both calf thymus DNA (CT DNA) and fish sperm DNA (FS DNA), 0-600 ng mL-1 for snake ovum RNA (SO RNA). The detection limits are 3.5 ng mL-1, 3.4 ng mL-1 and 2.9 ng mL-1 for CT DNA, FS DNA and SO RNA, respectively. Owing to performing in near infrared region, this method not only has high sensitivity endowed by RLS technique but also avoids possible spectral interference from background. It has been applied to the determination of nucleic acids in synthetic and real samples and satisfactory results were obtained.
Collapse
Affiliation(s)
- Fang Fang
- Anhui Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China
| | | | | | | | | | | | | |
Collapse
|
29
|
Chen Z, Liu J, Han Y, Zhu L. A novel histidine assay using tetraphenylporphyrin manganese (III) chloride as a molecular recognition probe by resonance light scattering technique. Anal Chim Acta 2006. [DOI: 10.1016/j.aca.2006.04.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
30
|
Jia Z, Yang J, Wu X, Sun C, Liu S, Wang F, Zhao Z. The sensitive determination of nucleic acids using resonance light scattering quenching method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2006; 64:555-9. [PMID: 16386949 DOI: 10.1016/j.saa.2005.07.052] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2005] [Accepted: 07/29/2005] [Indexed: 05/06/2023]
Abstract
It is found that in hexamethylene tetramine (HMTA)-HCl buffer of pH 7.00, nucleic acids can quench the resonance light scattering (RLS) of europium (III) (Eu3+)-2-thenoyltrifluoroacetne (TTA)-1,10-phenanthroline (Phen) system. Based on this, a sensitive method for the determination of nucleic acids is proposed. The experiments indicate that under the optimum conditions, the quenched RLS intensity is in proportion to the concentration of nucleic acids in the range of 1.0x10(-10) to 2.0x10(-6) g ml-1 for fish sperm (fsDNA), 1.0x10(-11) to 1.0x10(-6) g ml-1 for yeast RNA (yRNA), 5.0x10(-11) to 5.0x10(-7) g ml-1 for calf thymus DNA (ctDNA). Their detection limits (S/N=3) are 0.03, 0.006 and 0.002 ng ml-1, respectively. Therefore, the proposed method is the most sensitive RLS method for the determination of nucleic acids so far. The interaction between nucleic acids and Eu3+-TTA-Phen is also discussed.
Collapse
Affiliation(s)
- Zhen Jia
- Key Laboratory of Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China
| | | | | | | | | | | | | |
Collapse
|
31
|
Determination of nucleic acids based on the fluorescence quenching of Hoechst 33258 at pH 4.5. Anal Chim Acta 2006. [DOI: 10.1016/j.aca.2006.03.106] [Citation(s) in RCA: 120] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
32
|
Simple and sensitive assay for nucleic acids by use of the resonance light-scattering technique with the anionic dye methyl blue in the presence of cetyltrimethylammonium bromide. Mikrochim Acta 2006. [DOI: 10.1007/s00604-006-0620-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
33
|
Gao D, Tian Y, Ding L, Liang F, Bi S, Chen Y, Yu A, Zhang H. Determination of human complement factor C4 using resonance light-scattering technique with sodium dodecylbenzene sulphonate probe. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2006; 64:430-4. [PMID: 16384741 DOI: 10.1016/j.saa.2005.07.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2005] [Accepted: 07/20/2005] [Indexed: 05/05/2023]
Abstract
Based on the interaction between human complement factor C4 (human C4) and sodium dodecylbenzene sulphonate (SDBS) and the resonance light-scattering (RLS) technique, a highly sensitive assay for human C4 using resonance light-scattering technique was developed. At pH 2.8 Na2HPO4-citric acid buffer solution, the RLS intensities of SDBS system at 283, 503 and 600 nm were obviously enhanced in the presence of human C4. The effects of surfactant, pH, incubation time, concentration of SDBS and foreign substances on the enhanced RLS intensity of system were investigated. Under the optimum conditions, the enhanced RLS intensity is directly proportional to the concentration of human C4 in the range of (0.5-120)x10(-6)gl-1 and the linear regression equation was obtained with high correlation coefficient. This RLS technique was applied to the determination of human C4 in some synthetic samples with good recovery. Moreover, it was found that the electrostatic interaction is the main binding force between SDBS and human C4.
Collapse
Affiliation(s)
- Dejiang Gao
- College of Chemistry, Jilin University, Linyuan Road 1788, Changchun 130012, China
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Li A, Zhao H, Jin L, Zheng D. Nucleic Acids Analysis with Nano-Ag-Tb(III) by a Resonance Light Scattering Technique. ANAL SCI 2006; 22:775-9. [PMID: 16770061 DOI: 10.2116/analsci.22.775] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The nano-Ag-terbium(III)-mucleic acids system was observed by a resonance light scattering (RLS) technique for the first time, and the quantitative analysis of nucleic acids at nanogram levels was established. Studies showed that the RLS intensity of the nano-Ag-terbium(III) system can be obviously enhanced by nucleic acid, which was characterized by the RLS spectrum and the UV-Vis spectrum. In this system, the nanoparticles were only of a definite size and in a limited particle concentration region. Further research indicated that under the optimum conditions, the enhanced intensity of RLS is in proportion to the concentration of nucleic acids in the ranges of 7.0 x 10(-9) g ml(-1) to 8.0 x 10(-6) g ml(-1) for calf thymus DNA (ctDNA), 2.0 x 10(-8) g ml(-1) to 1.0 x 10(-6) g ml(-1) for fish sperm DNA (fsDNA) and 1.0 x 10(-9) g ml(-1) to 1.0 x 10(-7) g ml(-1) for yeast RNA (yRNA). The detection limits were 1.4 ng ml(-1) for ctDNA, 1.2 ng ml(-1) for fsDNA and 0.85 ng ml(-1) for yRNA, respectively. Synthetic and real samples were determined satisfactorily.
Collapse
Affiliation(s)
- Aiyun Li
- Department of Chemistry, Beijing Normal University, P. R. China
| | | | | | | |
Collapse
|
35
|
Liu XD, Huang CZ, Guo HP, Huang YM. Resonance Light Scattering Imaging Detection of Single Suprahelical Species of DNA Induced by Porphine-5,10,15,20-tetrakis(p-phenyltrimethylaminium). CHINESE J CHEM 2006. [DOI: 10.1002/cjoc.200690027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
36
|
Wu X, Yang JH, Sun S, Guo C, Ran D, Zheng J. Determination of nucleic acids based on the quenching effect on resonance light scattering of the Y(III)–1,6-bi(1′-phenyl-3′-methyl-5′-pyrazolone-4′-)hexane-dione system. LUMINESCENCE 2006; 21:129-34. [PMID: 16502393 DOI: 10.1002/bio.896] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Nucleic acids can quench resonance light scattering (RLS) intensity of the Y(III)-1,6-bi(1'-phenyl-3'-methyl-5'-pyrazolone-4'-)hexane-dione(BPMPHD) complex in the pH range 5.0-5.8. Under optimal conditions, there are linear relationships between the quenching of RLS and the concentration of nucleic acids in the range 6.3 x 10(-8)-2.1 x 10(-5) g/mL for fish sperm DNA (fsDNA), 1.2 x 10(-8)-5.0 x 10(-5) g/mL for calf thymus DNA (ctDNA) and 6.0 x 10(-8)-2.0 x 10(-5) g/mL for yeast RNA (yRNA). The detection limits (3 s) of fsDNA, ctDNA and yRNA are 0.7 ng/mL, 3.8 ng/mL and 4.2 ng/mL, respectively.
Collapse
Affiliation(s)
- Xia Wu
- Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | | | | | | | | | | |
Collapse
|
37
|
Wu X, Sun S, Yang J, Wang M, Liu L, Guo C. Study on the interaction between nucleic acid and Eu3+-oxolinic acid and the determination of nucleic acid using the resonance light scattering technique. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2005; 62:896-901. [PMID: 15951231 DOI: 10.1016/j.saa.2005.03.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2005] [Revised: 03/31/2005] [Accepted: 03/31/2005] [Indexed: 05/02/2023]
Abstract
At pH 9.75, the resonance light scattering (RLS) intensity of OA-Eu3+ system is greatly enhanced by nucleic acid. Based on this phenomenon, a new quantitative method for nucleic acid in aqueous solution has been developed. Under the optimum condition, the enhanced RLS is proportional to the concentration of nucleic acid in the range of 1.0x10(-9) to 1.0x10(-6)g/ml for herring sperm DNA, 8.0x10(-10) to 1.0x10(-6) g/ml for calf thymus DNA and 1.0x10(-9) to 1.0x10(-6) g/ml for yeast RNA, and their detection limits are 0.020, 0.011 and 0.010 ng/ml, respectively. Synthetic samples and actual samples were satisfactorily determined. In addition, the interaction mechanism between nucleic acid and OA-Eu3+ is also investigated.
Collapse
Affiliation(s)
- Xia Wu
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, Shandong, PR China
| | | | | | | | | | | |
Collapse
|
38
|
Ding F, Zhao H, Xia L, Jin L. The second-order scattering study of the Tb(III)-RNA and determination of RNA. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2005; 62:377-82. [PMID: 16099706 DOI: 10.1016/j.saa.2005.01.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2004] [Accepted: 01/14/2005] [Indexed: 05/04/2023]
Abstract
The second-order scattering technique (SOS), using a common spectrofluorometer, was first developed as a sensitive instrumental analysis method for determination of the ribonucleic acid (RNA). The results indicate that RNA had a weak SOS peak and the Tb(III) ion can greatly enhance the SOS intensity of RNA with the maximum peak located at 612.0 nm. Mechanism study shows that the peak results from the long-range assembly of Tb(III) ion on the molecular surface of RNA. At the pH 7.50 and with cetyltrimethylammonium bromide (CTMAB) (6.0 x 10(-5)M), the enhanced SOS intensity was in proportion to the concentration of RNA in the range of 2.0 x 10(-8) to 2.0 x 10(-5)g/ml. The detection limit was 1.96 ng/ml. The relative standard deviation (five replicates) was within +/-5% in the linear range. This method has been used satisfactorily for the determination of both synthetic and real samples. In comparison with most other methods for the determination of ribonucleic acids, this method is more sensitive.
Collapse
Affiliation(s)
- Fen Ding
- Department of Chemistry, Beijing Normal University, Beijing 100875, PR China
| | | | | | | |
Collapse
|
39
|
Guang Chen Z, Feng Ding W, Lian Ren F, Han Y, Liu JB. A High-Sensitivity Assay of Nucleic Acids with Tetraphenyl Porphyrin Cobalt Chlorine by Resonance Light Scattering Technique. ANAL LETT 2005. [DOI: 10.1080/00032710500316217] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
40
|
Chen Z, Ding W, Ren F, Liu J, Liang Y. A simple and sensitive assay of nucleic acids based on the enhanced resonance light scattering of zwitterionics. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.06.057] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
41
|
Wei Q, Zhang H, Du B, Li Y, Zhang X. Sensitive Determination of DNA by Resonance Light Scattering with Pentamethoxyl Red. Mikrochim Acta 2005. [DOI: 10.1007/s00604-005-0375-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
42
|
Ding F, Zhao H, Chen S, Ouyang J, Jin L. Study of the interaction of nucleic acid with europium(III) and CTMAB and determination of nucleic acids at nanogram levels by the second-order scattering. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2004.12.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
43
|
Wu X, Wang Y, Wang M, Sun S, Yang J, Luan Y. Determination of nucleic acids at nanogram level using resonance light scattering technique with Congo Red. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2005; 61:361-366. [PMID: 15582801 DOI: 10.1016/j.saa.2004.04.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2004] [Accepted: 04/10/2004] [Indexed: 05/24/2023]
Abstract
Based on the enhancement of the resonance light scattering (RLS) of Congo Red (CR) by nucleic acid, a new quantitative method for nucleic acid is developed. In the Tris-HCl buffer (pH 10.5), the weak light scattering of CR is greatly enhanced by addition of nucleic acid and CTMAB, the maximum peak is at 560 nm and the enhanced intensity of RLS is in proportion to the concentration of nucleic acid. The linear range is 1.0 x 10(-9) to 1.0 x 10(-6) g ml(-1), 7.5 x 10(-8) to 1.0 x 10(-6) g ml(-1) and 7.5 x 10(-8) to 2.5 x 10(-6) g ml(-1) for herring sperm DNA, calf thymus DNA and yeast RNA, and the detection limits are 0.019, 0.89 and 1.2 ng ml(-1) (S/N = 3), respectively. Actual biological samples were satisfactorily determined.
Collapse
Affiliation(s)
- Xia Wu
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, Shandong, PR China
| | | | | | | | | | | |
Collapse
|
44
|
Backscattering light detection of nucleic acids with tetraphenylporphyrin–Al(III)–nucleic acids at liquid/liquid interface. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.05.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
45
|
Liu R, Yang J, Sun C, Wu X, Li L, Su B. Study on the interaction between nucleic acids and cationic surfactants. Colloids Surf B Biointerfaces 2004; 34:59-63. [PMID: 15261091 DOI: 10.1016/j.colsurfb.2003.11.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/05/2003] [Indexed: 11/27/2022]
Abstract
The interactions of nucleic acids and cationic surfactants (cetylpyridine bromide (CPB) and cetyltrimethylammonium bromide (CTMAB)) in aqueous solution have been studied using the techniques of resonance light scattering (RLS) spectroscopy, the absorption spectroscopy, zeta potential assay and NMR assignment measurement. It is considered that CPB or CTMAB can assemble on the surface of nucleic acid via electrostatic and hydrophobic forces, which results in the formation of large associate of nucleic acid-cationic surfactant and RLS enhancement of nucleic acid. Besides these forces, the pi-pi stacking force between CPB and nucleic acid also exists in the associate. In comparison with CTMAB, CPB has larger enhancement on RLS of nucleic acid, which is attributed to that the enhancement of the former is only due to the absorption of the bases of nucleic acid, while the enhancement of the latter is own to the synergetic resonance caused by the absorption of both bases of nucleic acid and the pyridyl in CPB. These results have important implication for understanding the influence of surfactants on nucleic acid functionality in life science.
Collapse
Affiliation(s)
- Rutao Liu
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | | | | | | | | | | |
Collapse
|
46
|
Zhu C, Zhuo S, Li Y, Wang L, Zhao D, Chen J, Wu Y. Determination of nucleic acids with tetra-(N-hexadecylpyridiniumyl) porphyrin sensitized by cetyltrimethylammonium bromide (CTMAB) using a Rayleigh light-scattering technique. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2004; 60:959-964. [PMID: 15036109 DOI: 10.1016/s1386-1425(03)00325-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2003] [Accepted: 07/11/2003] [Indexed: 05/24/2023]
Abstract
Using a common spectrofluorometer to measure the intensity of Rayleigh light-scattering (RLS), a method for determination of nucleic acids has been developed. At pH 10.24 and ionic strength 0.01 mol l-1 (NaCl), the Rayleigh light-scattering of the tetra-(N-hexadecylpyridiniumyl) porphyrin (TC16PyP) is greatly enhanced by nucleic acids in the presence of cetyltrimethylammonium bromide (CTMAB), with the scattering peak located at 311.8 nm. The enhanced RLS intensity is in proportion to the concentration of calf thymus DNA (ctDNA) in the range 0.2-6.0 microg ml-1 and to that of fish sperm DNA (fsDNA) in the range 0.05-3.0microg ml-1. The limits of detection are 0.016 microg ml-1 for calf thymus DNA and 0.023 microg ml-1 for fish sperm DNA when the concentration of TPP was chosen 2.0 x 10(-6) mol l-1. Four synthetic samples were determined satisfactorily.
Collapse
Affiliation(s)
- Changqing Zhu
- College of Chemistry and Materials Science, Anhui Normal Unversity, Wuhu 241000, PR China.
| | | | | | | | | | | | | |
Collapse
|
47
|
Zhou YL, Li YZ. The interaction of poly(ethylenimine) with nucleic acids and its use in determination of nucleic acids based on light scattering. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2004; 60:377-384. [PMID: 14670501 DOI: 10.1016/s1386-1425(03)00243-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
For the first time, poly(ethylenimine) (PEI) was used to determine nucleic acids with a light scattering technique using a common spectrofluorometer. The interaction of PEI with DNA results in greatly enhanced intensity of light scattering at 300 nm, which is caused by the formation of the big particles between DNA and PEI. Based on this, a new quantitative method for nucleic acid determination in aqueous solutions has been developed. Under the optimum conditions, the enhanced intensity of light scattering is proportional to the concentration of nucleic acid in the range of 0.01-10.0 microg ml(-1) for herring sperm DNA (hsDNA), 0.02-10.0 microg ml(-1) for calf thymus DNA (ctDNA), 0.02-20.0 microg ml(-1) for yeast RNA (yRNA). The detection limits are 5.3, 9.9, and 13.7 ng ml(-1), respectively. Synthetic samples were determined satisfactorily. At the same time, the light scattering technique has been successfully used to obtain the information on the effects of pH and ionic strength on the formation and the stability of the DNA/PEI complex, which is important in some fields such as genetic engineering and gene transfer. Using ethidium bromide (EB) as a fluorescent probe, the binding of PEI with hsDNA was studied. Both the binding constant of EB with DNA and the number of binding sites per nucleotide decrease with increasing concentration of PEI, indicating noncompetitive inhibition of EB binding to DNA in the presence of PEI. And the association constant of PEI to DNA obtained is 1.2 x 10(5) M(-1). IR-spectra show that PEI interacts with DNA through both the phosphate groups and the bases of DNA and the formation of DNA/PEI complex may cause the change of the conformation of the DNA secondary structure, which is also proved by UV-spectra.
Collapse
Affiliation(s)
- Ying-lin Zhou
- The Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Department of Chemical Biology, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | | |
Collapse
|
48
|
Huang CZ, Li YF. Resonance light scattering technique used for biochemical and pharmaceutical analysis. Anal Chim Acta 2003. [DOI: 10.1016/s0003-2670(03)00630-5] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
49
|
Study of the interaction of nucleic acids with acridine orange-CTMAB and determination of nucleic acids at nanogram levels based on the enhancement of resonance light scattering. Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(03)00967-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
50
|
Wang Y, Yang J, Wu X, Li L, Sun S, Su B, Zhao Z. Progress of Spectral Probes for Nucleic Acids. ANAL LETT 2003. [DOI: 10.1081/al-120023702] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|