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Koike S, Saito Y, Ogasawara Y. Novel Fluorometric Assay of Antiglycation Activity Based on Methylglyoxal-Induced Protein Carbonylation. Antioxidants (Basel) 2023; 12:2030. [PMID: 38136150 PMCID: PMC10740428 DOI: 10.3390/antiox12122030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 12/24/2023] Open
Abstract
Advanced glycation end products (AGEs), which can have multiple structures, are formed at the sites where the carbonyl groups of reducing sugars bind to the free amino groups of proteins through the Maillard reaction. Some AGE structures exhibit fluorescence, and this fluorescence has been used to measure the formation and quantitative changes in carbonylated proteins. Recently, fluorescent AGEs have also been used as an index for the evaluation of compounds that inhibit protein glycation. However, the systems used to generate fluorescent AGEs from the reaction of reducing sugars and proteins used for the evaluation of antiglycation activity have not been determined through appropriate research; thus, problems remain regarding sensitivity, quantification, and precision. In the present study, using methylglyoxal (MGO), a reactive carbonyl compound to induce glycation, a comparative analysis of the mechanisms of formation of fluorescent substances from several types of proteins was conducted. The analysis identified hen egg lysozyme (HEL) as a protein that produces stronger fluorescent AGEs faster in the Maillard reaction with MGO. It was also found that the AGE structure produced in MGO-induced in HEL was argpyrimidine. By optimizing the reaction system, we developed a new evaluation method for compounds with antiglycation activity and established an efficient evaluation method (HEL-MGO assay) with greater sensitivity and accuracy than the conventional method, which requires high concentrations of bovine serum albumin and glucose. Furthermore, when compounds known to inhibit glycation were evaluated using this method, their antiglycation activities were clearly and significantly measured, demonstrating the practicality of this method.
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Affiliation(s)
| | | | - Yuki Ogasawara
- Department of Analytical Biochemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan; (S.K.); (Y.S.)
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Yu LP, Li YJ, Wang T, Tao YX, Zhang M, Gu W, Yu J, Yang XX. In vivo recognition of bioactive substances of Polygonum multiflorum for protecting mitochondria against metabolic dysfunction-associated fatty liver disease. World J Gastroenterol 2023; 29:171-189. [PMID: 36683716 PMCID: PMC9850952 DOI: 10.3748/wjg.v29.i1.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/01/2022] [Accepted: 12/05/2022] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Metabolic dysfunction-associated fatty liver disease (MAFLD) is a severe threat to human health. Polygonum multiflorum (PM) has been proven to remedy mitochondria and relieve MAFLD, but the main pharmacodynamic ingredients for mitigating MAFLD remain unclear.
AIM To research the active ingredients of PM adjusting mitochondria to relieve high-fat diet (HFD)-induced MAFLD in rats.
METHODS Fat emulsion-induced L02 adipocyte model and HFD-induced MAFLD rat model were used to investigate the anti-MAFLD ability of PM and explore their action mechanisms. The adipocyte model was also applied to evaluate the activities of PM-derived constituents in liver mitochondria from HFD-fed rats (mitochondrial pharmacology). PM-derived constituents in liver mitochondria were confirmed by ultra-high-performance liquid chromatography/mass spectrometry (mitochondrial pharmacochemistry). The abilities of PM-derived monomer and monomer groups were evaluated by the adipocyte model and MAFLD mouse model, respectively.
RESULTS PM repaired mitochondrial ultrastructure and prevented oxidative stress and energy production disorder of liver mitochondria to mitigate fat emulsion-induced cellular steatosis and HFD-induced MAFLD. PM-derived constituents that entered the liver mitochondria inhibited oxidative stress damage and improved energy production against cellular steatosis. Eight chemicals were found in the liver mitochondria of PM-administrated rats. The anti-steatosis ability of one monomer and the anti-MAFLD activity of the monomer group were validated.
CONCLUSION PM restored mitochondrial structure and function and alleviated MAFLD, which may be associated with the remedy of oxidative stress and energy production. The identified eight chemicals may be the main bioactive ingredients in PM that adjusted mitochondria to prevent MAFLD. Thus, PM provides a new approach to prevent MAFLD-related mitochondrial dysfunction. Mitochondrial pharmacology and pharmacochemistry further showed efficient strategies for determining the bioactive ingredients of Chinese medicines that adjust mitochondria to prevent diseases.
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Affiliation(s)
- Li-Ping Yu
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, Yunnan Province, China
- College of Pharmaceutical Science, Yunnan Key Laboratory of Southern Medicine Utilization, Kunming 650500, Yunnan Province, China
| | - Yan-Juan Li
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, Yunnan Province, China
- College of Pharmaceutical Science, Yunnan Key Laboratory of Southern Medicine Utilization, Kunming 650500, Yunnan Province, China
| | - Tao Wang
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, Yunnan Province, China
- College of Pharmaceutical Science, Yunnan Key Laboratory of Southern Medicine Utilization, Kunming 650500, Yunnan Province, China
| | - Yu-Xuan Tao
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, Yunnan Province, China
- College of Pharmaceutical Science, Yunnan Key Laboratory of Southern Medicine Utilization, Kunming 650500, Yunnan Province, China
| | - Mei Zhang
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, Yunnan Province, China
- College of Pharmaceutical Science, Yunnan Key Laboratory of Southern Medicine Utilization, Kunming 650500, Yunnan Province, China
| | - Wen Gu
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, Yunnan Province, China
- College of Pharmaceutical Science, Yunnan Key Laboratory of Southern Medicine Utilization, Kunming 650500, Yunnan Province, China
| | - Jie Yu
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, Yunnan Province, China
- College of Pharmaceutical Science, Yunnan Key Laboratory of Southern Medicine Utilization, Kunming 650500, Yunnan Province, China
| | - Xing-Xin Yang
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, Yunnan Province, China
- College of Pharmaceutical Science, Yunnan Key Laboratory of Southern Medicine Utilization, Kunming 650500, Yunnan Province, China
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In vivo identification of the pharmacodynamic ingredients of Polygonum cuspidatum for remedying the mitochondria to alleviate metabolic dysfunction–associated fatty liver disease. Biomed Pharmacother 2022; 156:113849. [DOI: 10.1016/j.biopha.2022.113849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/08/2022] [Accepted: 10/06/2022] [Indexed: 11/21/2022] Open
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A Novel Method for Identifying Parkin Binding Agents in Complex Preparations of Herbal Medicines. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:3260243. [PMID: 35087614 PMCID: PMC8789414 DOI: 10.1155/2022/3260243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/11/2021] [Accepted: 12/04/2021] [Indexed: 11/24/2022]
Abstract
Parkin is a crucial E3 ubiquitin ligase for initiating mitophagy through the PINK1/Parkin pathway. Regulating the expression and activity of parkin can remedy mitophagy and human disease. We developed an efficient method to isolate natural parkin ligands from herbal medicines by combining centrifugal ultrafiltration and liquid chromatography/mass spectrometry. The heterologous expression technology identified functionally active and pure parkin proteins. After evaluating the reliability of the method using DL-selenomethionine and DL-dithiothreitol as positive controls, this method was successfully applied to capture parkin ligands from Polygoni Cuspidati Rhizoma et Radix and Sophorae Flavescentis Radix. LC/MS identified seven novel parkin-targeting compounds, namely, 7,4′-dihydroxy-5-methoxy-8-(γ, γ-dimethylallyl)-flavanone, kushenol I, kurarinone, sophoraflavanone G, torachrysone-8-O-glucoside, apigenin, and emodin, supported by the molecular docking analysis. Five of the seven novel compounds (kushenol I, kurarinone, sophoraflavanone G, apigenin, and emodin) can activate parkin in in vitro autoubiquitination assays. Meanwhile, kushenol I and kurarinone had antisteatosis activity in fat emulsion-damaged human hepatocytes. These results confirmed the effectiveness of the method for identifying parkin ligands from complex preparations, useful to advance drug discovery from medicinal herbs.
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Cucu AA, Baci GM, Dezsi Ş, Nap ME, Beteg FI, Bonta V, Bobiş O, Caprio E, Dezmirean DS. New Approaches on Japanese Knotweed ( Fallopia japonica) Bioactive Compounds and Their Potential of Pharmacological and Beekeeping Activities: Challenges and Future Directions. PLANTS (BASEL, SWITZERLAND) 2021; 10:2621. [PMID: 34961091 PMCID: PMC8705504 DOI: 10.3390/plants10122621] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 11/14/2021] [Accepted: 11/24/2021] [Indexed: 05/17/2023]
Abstract
Known especially for its negative ecological impact, Fallopia japonica (Japanese knotweed) is now considered one of the most invasive species. Nevertheless, its chemical composition has shown, beyond doubt, some high biological active compounds that can be a source of valuable pharmacological potential for the enhancement of human health. In this direction, resveratrol, emodin or polydatin, to name a few, have been extensively studied to demonstrate the beneficial effects on animals and humans. Thus, by taking into consideration the recent advances in the study of Japanese knotweed and its phytochemical constituents, the aim of this article is to provide an overview on the high therapeutic potential, underlining its antioxidant, antimicrobial, anti-inflammatory and anticancer effects, among the most important ones. Moreover, we describe some future directions for reducing the negative impact of Fallopia japonica by using the plant for its beekeeping properties in providing a distinct honey type that incorporates most of its bioactive compounds, with the same health-promoting properties.
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Affiliation(s)
- Alexandra-Antonia Cucu
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (A.-A.C.); (G.-M.B.); (V.B.); (D.S.D.)
| | - Gabriela-Maria Baci
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (A.-A.C.); (G.-M.B.); (V.B.); (D.S.D.)
| | - Ştefan Dezsi
- Faculty of Geography, Babeş-Bolyai University, 400084 Cluj-Napoca, Romania
| | - Mircea-Emil Nap
- Faculty of Geodesy, Technical University of Civil Engineering Bucharest, 020396 Bucharest, Romania;
- Faculty of Horticulture, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania
| | - Florin Ioan Beteg
- Faculty of Veterinary Medicine, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania;
| | - Victoriţa Bonta
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (A.-A.C.); (G.-M.B.); (V.B.); (D.S.D.)
| | - Otilia Bobiş
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (A.-A.C.); (G.-M.B.); (V.B.); (D.S.D.)
| | - Emilio Caprio
- Department of Agricultural Sciences, University of Naples “Federico II”, Via Università, Portici, 100-80055 Naples, Italy;
| | - Daniel Severus Dezmirean
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (A.-A.C.); (G.-M.B.); (V.B.); (D.S.D.)
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Dołowacka-Jóźwiak A, Matkowski A, Nawrot-Hadzik I. Antiglycoxidative Properties of Extracts and Fractions from Reynoutria Rhizomes. Nutrients 2021; 13:nu13114066. [PMID: 34836321 PMCID: PMC8622691 DOI: 10.3390/nu13114066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 11/18/2022] Open
Abstract
Hyperglycemia, when sustained over a long time in diabetes mellitus (DM), leads to biochemical and cellular abnormalities, primarily through the formation of advanced glycation end-products (AGEs). In the treatment of diabetes, beside blood-sugar-lowering medications, a consumption of herbal products that can inhibit the AGEs’ formation is recommended. This study investigated the in vitro antiglycoxidative potential of extracts and fractions from the rhizomes of Japanese, Giant, and Bohemian knotweeds (Reynoutria japonica (Houtt.), R. sachalinensis (F. Schmidt) Nakai, and R.× bohemica Chrtek et Chrtkova). Their effects on glycooxidation of bovine and human serum albumin were evaluated by incubation of the proteins with a mixture of glucose and fructose (0.5 M) and 150 µg/mL of extract for 28 days at 37 °C, followed by measuring early and late glycation products, albumin oxidation (carbonyl and free thiol groups), and amyloid-β aggregation (thioflavin T and Congo red assays). The highest antiglycoxidative activity, comparable or stronger than the reference drug (aminoguanidine), was observed for ethyl acetate and diethyl ether fractions, enriched in polyphenols (stilbenes, phenylpropanoid disaccharide esters, and free and oligomeric flavan-3-ols). In conclusion, the antiglycoxidative compounds from these three species should be further studied for potential use in the prevention and complementary treatment of DM.
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Affiliation(s)
| | - Adam Matkowski
- Department of Pharmaceutical Biology and Biotechnology, Division of Pharmaceutical Biology and Botany, Botanical Garden of Medicinal Plants, Wroclaw Medical University, 50556 Wroclaw, Poland
- Correspondence: (A.M.); (I.N.-H.)
| | - Izabela Nawrot-Hadzik
- Department of Pharmaceutical Biology and Biotechnology, Division of Pharmaceutical Biology and Botany, Botanical Garden of Medicinal Plants, Wroclaw Medical University, 50556 Wroclaw, Poland
- Correspondence: (A.M.); (I.N.-H.)
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Glavnik V, Vovk I. Extraction of Anthraquinones from Japanese Knotweed Rhizomes and Their Analyses by High Performance Thin-Layer Chromatography and Mass Spectrometry. PLANTS (BASEL, SWITZERLAND) 2020; 9:plants9121753. [PMID: 33322304 PMCID: PMC7764617 DOI: 10.3390/plants9121753] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/01/2020] [Accepted: 12/09/2020] [Indexed: 05/28/2023]
Abstract
Anthraquinones (yellow dyes) were extracted from Japanese knotweed rhizomes with twelve extraction solvents (water; ethanol(aq) (20%, 40%, 60%, 70% and 80%), ethanol, 70% methanol(aq), methanol, 70% acetone(aq), acetone and dichloromethane). The obtained sample test solutions (STSs) were analyzed using high-performance thin-layer chromatography (HPTLC) coupled to densitometry and mass spectrometry (HPTLC-MS/MS) on HPTLC silica gel plates. Identical qualitative densitometric profiles (with anthraquinone aglycones and glycosylated anthraquinones) were obtained for STSs in all the solvents except for the STS in dichloromethane, which enabled the most selective extractions of anthraquinone aglycones emodin and physcion. The highest extraction efficiency, evaluated by comparison of the total peak areas in the densitograms of all STSs scanned at 442 nm, was achieved for 70% acetone(aq). In STS prepared with 70% acetone(aq), the separation of non-glycosylated and glycosylated anthraquinones was achieved with developing solvents toluene-acetone-formic acid (6:6:1, 3:6:1 and 3:3:1 v/v) and dichloromethane-acetone-formic acid (1:1:0.1, v/v). Non-glycosylated anthraquinones were separated only with toluene-acetone-formic acid, among which the best resolution between emodin and physcion gave the ratio 6:6:1 (v/v). This solvent and dichloromethane-acetone-formic acid (1:1:0.1, v/v) enabled the best separation of glycosylated anthraquinones. Four HPTLC-MS/MS methods enabled the identification of emodin and tentative identification of its three glycosylated analogs (emodin-8-O-hexoside, emodin-O-acetyl-hexoside and emodin-O-malonyl-hexoside), while only the HPTLC-MS/MS method with toluene-acetone-formic acid (6:6:1, v/v) enabled the identification of physcion. Changes of the shapes and the absorption maxima (bathochromic shifts) in the absorption spectra after post-chromatographic derivatization provided additional proof for the detection of physcion and rejection of the presence of chrysophanol in STS.
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Screening and Characterization of Antiglycoxidant Anthocyanins from Vaccinium myrtillus Fruit Using DPPH and Methylglyoxal Pre-Column HPLC Assays. Antioxidants (Basel) 2020; 9:antiox9060512. [PMID: 32532151 PMCID: PMC7346134 DOI: 10.3390/antiox9060512] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/04/2020] [Accepted: 06/09/2020] [Indexed: 01/09/2023] Open
Abstract
Vaccinium myrtillus fruit (bilberry) is well known for its high richness in anthocyanins, which may be responsible for its preventive effects on several oxidative and carbonyl stress-related pathologies. However, limited data are available regarding the antioxidant and antiglycative contributions of its constituents. Spectrometric analyses were performed to evaluate anthocyanin content, radical scavenging and antiglycative properties of an anthocyanin-rich extract from bilberries. Additionally, original DPPH and methylglyoxal pre-column HPLC methods were instigated to allow straightforward identification of the main contributors to radical and carbonyl trapping effects. Finally, representative pure anthocyanins were evaluated using classical DPPH and antiglycation assays. Delphinidin, petunidin and cyanidin glycosides were identified as the most effective radical scavenging constituents in both HPLC and spectrometric DPPH evaluations. Potent antiglycative activities were also assessed for cyanidin, delphinidin and petunidin glucosides as attested by their respective IC50 values of 114.2 ± 7.8, 130.5 ± 2.8, and 132.4 ± 3.7 µM. Interestingly, methylglyoxal spiking evaluation demonstrated that all bilberry anthocyanins exerted noticeable and comparable α-dicarbonyl trapping effects. Anthocyanins can be regarded as potent antiglycoxidant agents that might account for some health benefits of bilberries consumption. Besides, significant differences in their contributions were successfully highlighted by the employed pre-column HPLC assays.
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Yu L, Wu AG, Wong VKW, Qu LQ, Zhang N, Qin DL, Zeng W, Tang B, Wang HM, Wang Q, Law BYK. The New Application of UHPLC-DAD-TOF/MS in Identification of Inhibitors on β-Amyloid Fibrillation From Scutellaria baicalensis. Front Pharmacol 2019; 10:194. [PMID: 30936829 PMCID: PMC6431657 DOI: 10.3389/fphar.2019.00194] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 02/14/2019] [Indexed: 11/13/2022] Open
Abstract
Literary evidence depicts that aggregated β-amyloid (Aβ) leads to the pathogenesis of Alzheimer's disease (AD). Although many traditional Chinese medicines (TCMs) are effective in treating neurodegenerative diseases, there is no effective way for identifying active compounds from their complicated chemical compositions. Instead of using a traditional herbal separation method with low efficiency, we herein apply UHPLC-DAD-TOF/MS for the accurate identification of the active compounds that inhibit the fibrillation of Aβ (1-42), via an evaluation of the peak area of individual chemical components in chromatogram, after incubation with an Aβ peptide. Using the neuroprotective herbal plant Scutellaria baicalensis (SB) as a study model, the inhibitory effect on Aβ by its individual compounds, were validated using the thioflavin-T (ThT) fluorescence assay, biolayer interferometry analysis, dot immunoblotting and native gel electrophoresis after UHPLC-DAD-TOF/MS analysis. The viability of cells after Aβ (1-42) incubation was further evaluated using both the tetrazolium dye (MTT) assay and flow cytometry analysis. Thirteen major chemical components in SB were identified by UHPLC-DAD-TOF/MS after incubation with Aβ (1-42). The peak areas of two components from SB, baicalein and baicalin, were significantly reduced after incubation with Aβ (1-42), compared to compounds alone, without incubation with Aβ (1-42). Consistently, both compounds inhibited the formation of Aβ (1-42) fibrils and increased the viability of cells after Aβ (1-42) incubation. Based on the hypothesis that active chemical components have to possess binding affinity to Aβ (1-42) to inhibit its fibrillation, a new application using UHPLC-DAD-TOF/MS for accurate identification of inhibitors from herbal plants on Aβ (1-42) fibrillation was developed.
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Affiliation(s)
- Lu Yu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau.,Laboratory of Medical Chemistry, Department of Chemistry, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China.,Sino-Portugal Traditional Chinese Medicine International Cooperation Center, Southwest Medical University, Luzhou, China
| | - An-Guo Wu
- Sichuan Key Laboratory of New Drug Discovery and Drugability Evaluation, Southwest Medical University, Luzhou, China.,Luzhou Key Laboratory of Bioactivity Screening in Traditional Chinese Medicine and Drugability Evaluation, Southwest Medical University, Luzhou, China
| | - Vincent Kam-Wai Wong
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Li-Qun Qu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Ni Zhang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Da-Lian Qin
- Sichuan Key Laboratory of New Drug Discovery and Drugability Evaluation, Southwest Medical University, Luzhou, China.,Luzhou Key Laboratory of Bioactivity Screening in Traditional Chinese Medicine and Drugability Evaluation, Southwest Medical University, Luzhou, China
| | - Wu Zeng
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Bin Tang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Hui-Miao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Qiong Wang
- Sino-Portugal Traditional Chinese Medicine International Cooperation Center, Southwest Medical University, Luzhou, China.,Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China.,School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Betty Yuen-Kwan Law
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
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Cheng G, Xing J, Pi Z, Liu S, Liu Z, Song F. α-Glucosidase immobilization on functionalized Fe3O4 magnetic nanoparticles for screening of enzyme inhibitors. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.12.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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11
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Wang J, Feng J, Xu L, Ma J, Li J, Ma R, Sun K, Wang Z, Zhang H. Ionic liquid-based salt-induced liquid-liquid extraction of polyphenols and anthraquinones in Polygonum cuspidatum. J Pharm Biomed Anal 2019; 163:95-104. [DOI: 10.1016/j.jpba.2018.09.050] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 09/23/2018] [Accepted: 09/27/2018] [Indexed: 01/03/2023]
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12
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Improved Methods for the Rapid Formation and Prevention of Advanced Glycation End Products (AGEs) In Vitro by Coupling to the Hypoxanthine/Xanthine Oxidase Assay System. Biomedicines 2018; 6:biomedicines6030088. [PMID: 30111701 PMCID: PMC6164639 DOI: 10.3390/biomedicines6030088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 08/08/2018] [Accepted: 08/10/2018] [Indexed: 01/19/2023] Open
Abstract
Advanced glycation end products (AGEs) represent a set of molecules that contribute directly to the initiation and aggravation of diseases associated with ageing. AGEs are produced by the reaction between reducing sugars (or α-dicarbonyl compounds), proteins, and amino acid residues. Previous in vitro methods using non-enzymatic procedures described in the literature require an incubation period of 1–3 weeks to generate AGEs. In this study, the reaction time for the formation of AGEs (48 and 3 h) was significantly reduced by adaptation of methods previously described in the literature and coupling them to the free radical generation system termed hypoxanthine/xanthine oxidase assay. The incorporation of this assay into the experimental system accelerated the production of AGEs as a result of the formation of reactive oxygen species (ROS), as shown by increased fluorescence. The capacity of different classes of chemical compounds (aminoguanidine, chlorogenic acid, rutin, and methanol extracts of Hancornia speciosa Gomes) to inhibit protein glycation by acting as scavenging agents of α-dicarbonyl species was evaluated. Aminoguanidine and, especially, rutin identified in the leaf extracts of H. speciosa Gomes showed a high capacity to act as scavengers of reactive carbonyl species RCS-trapping, resulting in the inhibition of AGEs formation.
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Abstract
Four naphtolic glycosides (1–4), three anthraquinones (5–7), two stilbenes (8-9), one benzyl glycoside (10), and one flavonoid (11) were isolated from the roots of Fallopia multiflora. The new compounds were elucidated to be 6-hydroxymusizin 8-O-α-D-apiofuranosyl-(1→6)-β-D-glucopyranoside (1) and 6-methoxy-3-methyl-1,6,8-trihydroxy-2-naphthoic acid 8-O-β-D-glucopyranoside (3). Compound 3 could be an important marker for chemotaxonomy of F. multiflora. Benzyl gentiobioside (10) was isolated for the first time from the family Polygonaceae.
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Tang D, Shen YB, Wang ZH, He B, Xu YH, Nie H, Zhu Q. Rapid Analysis and Guided Isolation of Astragalus Isoflavonoids by UHPLC-DAD-MS n and Their Cellular Antioxidant Defense on High-Glucose-Induced Mesangial Cell Dysfunction. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:1105-1113. [PMID: 29091441 DOI: 10.1021/acs.jafc.7b02949] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Isoflavonoids, including isoflavones, isoflavans, and pterocarpans, the principal components in Astragalus membranaceus, have a great deal of versatile health-promoting benefits. In this work, as a continuation of our search for bioactive constituents from A. membranaceus, a fast high-performance liquid chromatography-diode array detection-multiple-stage mass spectrometry method was first used to analyze the isoflavonoid profile of A. membranaceus roots extract. Twelve diverse isoflavonoids in subclasses of isoflavones, isoflavans, and pterocarpans present in glycoside/aglycone pair forms were tentatively characterized; of those 12, eight major isoflavonoids were finally isolated and simultaneously quantified by the established fast UHPLC method. Furthermore, the results confirmed for the first time that Astragalus isoflavonoid aglycones could attenuate mesangial cell proliferation and extracellular matrix (ECM) accumulation triggered by high glucose levels, and the primary mechanism might be via protecting intracellular antioxidant enzymes activities and enhancing endogenous antioxidant function to lower levels of cellular oxidative damage induced by high glucose levels. Collectively, diverse Astragalus isoflavonoid antioxidants have the potential to ameliorate high-glucose-induced mesangial cell dysfunction through the regulation of cellular antioxidant defense.
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Affiliation(s)
- Dan Tang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University , Guangzhou 510632, P. R. China
| | - Ying-Bin Shen
- Department of Food Science and Engineering, Jinan University , Guangzhou 510632, P. R. China
| | - Zhi-Hua Wang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University , Guangzhou 510632, P. R. China
| | - Bao He
- Institute of Kidney Diseases, Guangdong Consun Pharmaceutical Group , Guangzhou 510530, P. R. China
| | - You-Hua Xu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology , Macau, P. R. China
| | - Hong Nie
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University , Guangzhou 510632, P. R. China
| | - Quan Zhu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology , Macau, P. R. China
- Institute of Kidney Diseases, Guangdong Consun Pharmaceutical Group , Guangzhou 510530, P. R. China
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15
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Biospecific isolation and characterization of angiogenesis-promoting ingredients in Buyang Huanwu decoction using affinity chromatography on rat brain microvascular endothelial cells combined with solid-phase extraction, and HPLC-MS/MS. Talanta 2017; 179:490-500. [PMID: 29310265 DOI: 10.1016/j.talanta.2017.11.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 11/05/2017] [Accepted: 11/14/2017] [Indexed: 02/03/2023]
Abstract
Buyang Huanwu decoction (BHD) was reported to exert angiogenesis-promoting effects, but its active ingredients remain unknown. In this study, we developed a method to screen potential angiogenesis-promoting compounds in BHD, which involved biospecific isolation using live rat brain microvascular endothelial cells (rBMECs) and characterization using solid-phase extraction (SPE) and high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Six compounds showed binding affinity to rBMECs and were further identified as 6-hydroxykaempferol-di-O-glucoside, paeoniflorin, calycosin-7-O-β-D-glucoside, galloylpaeoniflorin, formononetin-7-O-β-D-glucoside, and (3R)-7,2'-hydroxy-3',4'-dimethoxy-isoflavan. The results indicated that five of them except 6-hydroxykaempferol-di-O-glucoside showed a protective effect against oxygen glucose deprivation/reperfusion injury in rBMECs and upregulated the secretion of vascular endothelial growth factor and basic fibroblast growth factor, suggesting a mechanism underlying their angiogenic activity. Our findings suggest that biospecific live cell-based isolation combined with SPE and HPLC-MS/MS is an effective method for screening potential bioactive components in traditional Chinese medicines.
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16
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Wang Q, Lu Z, Zhang L, Zhang Q, Wang M, Zhao H, Liu Y, Fu S, Huang Z, Xie Z, Yu H, Zhang Z, Gao X. Applying characteristic fragment filtering for rapid detection and identification of ingredients in rhubarb by HPLC coupled with linear ion trap-Orbitrap mass spectrometry. J Sep Sci 2017; 40:2854-2862. [DOI: 10.1002/jssc.201700203] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 05/02/2017] [Accepted: 05/02/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Qing Wang
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Zhiwei Lu
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Li Zhang
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Qingqing Zhang
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Meiling Wang
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Huizhen Zhao
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Yuehong Liu
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Shuang Fu
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Zhenghai Huang
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Ziye Xie
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Honghong Yu
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Zhixin Zhang
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
| | - Xiaoyan Gao
- School of Chinese Materia Medicine; Beijing University of Chinese Medicine; Beijing China
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17
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Glavnik V, Vovk I, Albreht A. High performance thin-layer chromatography-mass spectrometry of Japanese knotweed flavan-3-ols and proanthocyanidins on silica gel plates. J Chromatogr A 2016; 1482:97-108. [PMID: 28034505 DOI: 10.1016/j.chroma.2016.12.059] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 12/16/2016] [Accepted: 12/19/2016] [Indexed: 12/25/2022]
Abstract
On-line elution based TLC-MS is now a well-established technique, but the quality of the data obtained can sometimes be hampered by a severe spectral background or by strong ion suppression, especially when silica gel plates are used in combination with an acidic modifier in the developing solvent. We solved this issue simply and efficiently using two pre-developments of the plates, firstly with methanol-formic acid (10:1, v/v) and secondly with acetonitrile-methanol (2:1, v/v). This solution resulted in significant improvement in the sensitivity of HPTLC-MS methods. The applicability of this approach was proven on analysis of flavan-3-ols and proanthocyanidins in crude extracts of Japanese knotweed (Fallopia japonica Houtt.) rhizomes. Separations on HPTLC silica gel and HPTLC silica gel MS grade plates using developing solvents toluene-acetone-formic acid (3:3:1, 6:6:1, 3:6:1, v/v) and dichloromethane-acetone-formic acid (1:1:0.1, v/v) were followed by post-chromatographic derivatization with 4-dimethylaminocinnamaldehyde (DMACA) detection reagent. Examination of the stability of the analytes on the start confirmed that the plates should be developed immediately after the application of standards and sample test solutions. In a five hours stability testing after development we discovered an unexpected phenomenon of enhanced absorption at 280nm. However, based on an experiment with post-chromatographic derivatization with DMACA detection reagent, the analytes were proven to be sufficiently stable in the time frame of an HPTLC-MS analysis. This was important for development of the first HPTLC-MS and HPTLC-MSn methods for identification of flavan-3-ols and B-type proanthocyanidins from monomers up to decamers. For the first time, based on this research methodology, trimers, trimer gallates, tetramer gallates, pentamers, pentamer gallates, hexamers, hexamer gallates, heptamers, octamers, nonamers and decamers were tentatively identified in Japanese knotweed rhizomes. Additionally, all developed HPTLC-MS methods have enabled simultaneous identification of stilbenes (resveratrol, piceatannol hexoside, piceid) and anthraquinones (emodin, emodin-O-hexoside, emodin-O-(acetyl)-hexoside and emodin-O-(6'-O-malonyl)-hexoside).
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Affiliation(s)
- Vesna Glavnik
- Department of Food Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Irena Vovk
- Department of Food Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia.
| | - Alen Albreht
- Department of Food Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
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18
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Wang QL, Li J, Li XD, Ding LS, Xie J, Qing LS. A Simple Nano-SiO2-Based ELISA Method for Residue Detection of 2,4-Dichlorophenoxyacetic Acid in Bean Sprouts. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0709-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Xue Y, Dong J, Liang J. Chinese hamster ovary-sphingomyelin synthase2 biospecific extraction and liquid chromatography with tandem mass spectrometry analysis for the prediction of bioactive components of Rhizoma Polygoni Cuspidati. J Sep Sci 2016; 39:1067-72. [DOI: 10.1002/jssc.201501075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 12/06/2015] [Accepted: 12/30/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Ying Xue
- Department of Pharmaceutical Analysis, School of Pharmacy; Fudan University; Shanghai PR China
- Department of Pharmacy, Zhongshan Hospital; Fudan University; Shanghai China
| | - Jibin Dong
- Department of Pharmaceutical Analysis, School of Pharmacy; Fudan University; Shanghai PR China
| | - Jianying Liang
- Department of Pharmaceutical Analysis, School of Pharmacy; Fudan University; Shanghai PR China
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20
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Yang XX, Xu F, Wang D, Yang ZW, Tan HR, Shang MY, Wang X, Cai SQ. Development of a mitochondria-based centrifugal ultrafiltration/liquid chromatography/mass spectrometry method for screening mitochondria-targeted bioactive constituents from complex matrixes: Herbal medicines as a case study. J Chromatogr A 2015; 1413:33-46. [DOI: 10.1016/j.chroma.2015.08.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 08/06/2015] [Accepted: 08/07/2015] [Indexed: 12/11/2022]
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21
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Sohn E, Kim J, Kim CS, Jo K, Kim JS. Extract of Rhizoma Polygonum cuspidatum reduces early renal podocyte injury in streptozotocin‑induced diabetic rats and its active compound emodin inhibits methylglyoxal‑mediated glycation of proteins. Mol Med Rep 2015; 12:5837-45. [PMID: 26299942 PMCID: PMC4581740 DOI: 10.3892/mmr.2015.4214] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 07/23/2015] [Indexed: 02/01/2023] Open
Abstract
Podocyte injury contributes to renal damage and, eventually, to the occurrence of proteinuria in diabetic nephropathy. The aim of the present study was to investigate the effect of an ethanol extract from Rhizoma Polygonum cuspidatum (P. cuspidatum) on proteinuria and podocyte injury, and elucidate the underlying mechanism for streptozotocin (STZ)-induced diabetic nephropathy. The protective effects of P. cuspidatum extract (PCE) on renal podocytes in STZ-induced diabetic rats were also investigated. PCE (100 or 350 mg/kg/day) was administered to STZ-induced diabetic rats for 16 weeks, and blood glucose levels, body weight and proteinuria were measured. A double labeling technique with the terminal deoxynucleotidyl transferase dUTP nick end labeling assay was performed and synaptopodin expression was observed. In addition, cleaved caspase-3, methylglyoxal (MGO) and 8-hydroxydeoxyguanosine (8-OHdG) expression levels were measured. STZ-induced diabetic rats developed hyperglycemia and proteinuria. Increased apoptosis of the podocytes and increased cleaved caspase-3, MGO and 8-OHdG expression levels, as well as decreased synaptopodin expression were detected in the glomeruli of STZ-induced diabetic rats. However, treatment with PCE for 16 weeks restored protein levels to normal, and reduced podocyte loss and apoptosis. Levels of caspase-3 and MGO expression, as well as oxidative stress were ameliorated by PCE treatment. In addition, emodin, a biologically active ingredient of PCE, exerted an MGO scavenging effect and inhibited MGO-derived advanced glycation end-product formation. These findings indicate that PCE may be administered to prevent proteinuria and podocyte loss in STZ-induced diabetic rats partly by inhibiting podocyte apoptosis and cleaved caspase-3 expression, and by restoring the balance of oxidative stress and MGO expression.
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Affiliation(s)
- Eunjin Sohn
- Korean Medicine Based Herbal Drug Development Group, Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 305‑811, Republic of Korea
| | - Junghyun Kim
- Korean Medicine Based Herbal Drug Development Group, Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 305‑811, Republic of Korea
| | - Chan Sik Kim
- Korean Medicine Based Herbal Drug Development Group, Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 305‑811, Republic of Korea
| | - Kyuhyung Jo
- Korean Medicine Based Herbal Drug Development Group, Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 305‑811, Republic of Korea
| | - Jin Sook Kim
- Korean Medicine Based Herbal Drug Development Group, Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 305‑811, Republic of Korea
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22
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Matsuda R, Bi C, Anguizola J, Sobansky M, Rodriguez E, Vargas Badilla J, Zheng X, Hage B, Hage DS. Studies of metabolite-protein interactions: a review. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 966:48-58. [PMID: 24321277 PMCID: PMC4032809 DOI: 10.1016/j.jchromb.2013.11.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Revised: 11/14/2013] [Accepted: 11/18/2013] [Indexed: 11/25/2022]
Abstract
The study of metabolomics can provide valuable information about biochemical pathways and processes at the molecular level. There have been many reports that have examined the structure, identity and concentrations of metabolites in biological systems. However, the binding of metabolites with proteins is also of growing interest. This review examines past reports that have looked at the binding of various types of metabolites with proteins. An overview of the techniques that have been used to characterize and study metabolite-protein binding is first provided. This is followed by examples of studies that have investigated the binding of hormones, fatty acids, drugs or other xenobiotics, and their metabolites with transport proteins and receptors. These examples include reports that have considered the structure of the resulting solute-protein complexes, the nature of the binding sites, the strength of these interactions, the variations in these interactions with solute structure, and the kinetics of these reactions. The possible effects of metabolic diseases on these processes, including the impact of alterations in the structure and function of proteins, are also considered.
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Affiliation(s)
- Ryan Matsuda
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - Cong Bi
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - Jeanethe Anguizola
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - Matthew Sobansky
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - Elliott Rodriguez
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - John Vargas Badilla
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - Xiwei Zheng
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - Benjamin Hage
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - David S Hage
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA.
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