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Li Q, Yin G, Wang J, Li L, Liang Q, Zhao X, Chen Y, Zheng X, Zhao X. An emerging paradigm to develop analytical methods based on immobilized transmembrane proteins and its applications in drug discovery. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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2
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Recent advances in cell membrane-coated technology for drug discovery from natural products. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116601] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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3
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Maitra U, Stephen C, Ciesla LM. Drug discovery from natural products - Old problems and novel solutions for the treatment of neurodegenerative diseases. J Pharm Biomed Anal 2022; 210:114553. [PMID: 34968995 PMCID: PMC8792363 DOI: 10.1016/j.jpba.2021.114553] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 12/19/2021] [Accepted: 12/22/2021] [Indexed: 12/12/2022]
Abstract
The use of natural products has been shown to be a fruitful approach in the discovery of novel pharmaceuticals. In fact, many currently approved drugs originated from compounds that were first identified in nature. Chemical diversity of natural compounds cannot be matched by man-made libraries of chemically synthesized molecules. Many natural compounds interact with and modulate regulatory protein targets and can be considered evolutionarily-optimized drug-like molecules. Despite this, many pharmaceutical companies have reduced or eliminated their natural product discovery programs in the last two decades. Screening natural products for pharmacologically active compounds is a challenging task that requires high resource commitment. Novel approaches at the early stage of the drug discovery pipeline are needed to allow for rapid screening and identification of the most promising molecules. Here, we review the possible evolutionary roots for drug-like characteristics of numerous natural compounds. Since many of these compounds target evolutionarily conserved cellular signaling pathways, we propose novel, early-stage drug discovery approaches to identify drug candidates that can be used for the potential prevention and treatment of neurodegenerative diseases. Invertebrate in vivo animal models of neurodegenerative diseases and innovative tools used within these models are proposed here as a screening funnel to identify new drug candidates and to shuttle these hits into further stages of the drug discovery pipeline.
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Affiliation(s)
- Urmila Maitra
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Cayman Stephen
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Lukasz M Ciesla
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA.
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4
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Zhao X, Fu X, Yuan X, Shayiranbieke A, Xu R, Cao F, Ren J, Liang Q, Zhao X. Development and characterization of a selective chromatographic approach to the rapid discovery of ligands binding to muscarinic-3 acetylcholine receptor. J Chromatogr A 2021; 1653:462443. [PMID: 34365202 DOI: 10.1016/j.chroma.2021.462443] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 07/07/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
The pursuit of new ligands binding to muscarinic-3 acetylcholine receptor (M3R) is viewed as challenging due to the lack of screening methods with high efficiency. To address such challenges, this work developed and characterized an approach to the rapid discovery of M3R ligands using the immobilized receptor as the chromatographic stationary phase. We fused haloalkane dehalogenase (Halo) as a tag at the C-terminus of M3R. The fusion M3R was immobilized on 6-chlorocaproic acid-activated ammino-microspheres by the specific covalent reaction between the Halo-tag and the linker. Comprehensive characterizations of the immobilized M3R were performed by scanning electron microscope, X-ray photoelectron spectroscopy, and the investigation on the binding of three specific ligands to the receptor. The feasibility of the immobilized M3R in complex matrices was tested by screening the bioactive compounds in Zhisou oral liquid, assessing the interaction between the screened compounds and the receptor using zonal elution, and evaluating the in vivo activity of the targeted compounds. The results evidenced that the immobilized M3R has high specificity, good stability, and the capacity to separate M3R ligands from complex matrices. These allowed us to identify naringin, hesperidin, liquiritigenin, platycodin D, and glycyrrhizic acid as the potential ligands of M3R. The association constants of the five compounds to M3R were 4.44 × 104, 1.11 × 104, 7.20 × 104, 4.15 × 104, and 3.36 × 104 M-1. The synergistic application of the five compounds exhibited an equivalent expectorant activity to the original formula. We reasoned that the current method is possible to provide a highly efficient strategy for the discovery of receptor ligands.
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Affiliation(s)
- Xue Zhao
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Xiaoying Fu
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Xinyi Yuan
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | | | - Ru Xu
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Fang Cao
- Shaanxi Pharmaceutical Holding Group Shanhaidan Pharmaceutical Co., Ltd., Xi'an 710075, China
| | - Jianping Ren
- Medicine Researchinstitution of Shaanxi Pharmaceutical Holding Cooperation, Xi'an 710065, China
| | - Qi Liang
- College of Life Sciences, Northwest University, Xi'an 710069, China.
| | - Xinfeng Zhao
- College of Life Sciences, Northwest University, Xi'an 710069, China.
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5
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Wu X, Qiu B, Chen Y, Shi Y, Zhu J, Liu X, Zhao D. Online coupling Fe3O4@ZIF-67@α-glucosidase biomicroreactor with high performance liquid chromatography for rapid screening of α-glucosidase inhibitors in tea and their inhibitory activity research. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1159:122398. [DOI: 10.1016/j.jchromb.2020.122398] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 10/02/2020] [Accepted: 10/05/2020] [Indexed: 12/21/2022]
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Wang XY, Ding X, Yuan YF, Zheng LY, Cao Y, Zhu ZY, Zhang GQ, Chai YF, Chen XF, Hong ZY. Comprehensive two-dimensional APTES-decorated MCF7-cell membrane chromatographic system for characterizing potential anti-breast-cancer components from Yuanhu-Baizhi herbal medicine pair. J Food Drug Anal 2017; 26:823-833. [PMID: 29567254 PMCID: PMC9322241 DOI: 10.1016/j.jfda.2017.11.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/21/2017] [Accepted: 11/21/2017] [Indexed: 12/17/2022] Open
Abstract
Rhizoma corydalis and Radix Angelicae Dahurica (Yuanhu–Baizhi) herbal medicine pair has been used for thousands of years and has been reported to be potentially active in recent cancer therapy. But the exact active components or fractions remain unclear. In this study, a new comprehensive two-dimensional (2D) 3-aminopropyltriethoxysilane (APTES)-decorated MCF7-cell membrane chromatography (CMC)/capcell-C18 column/time-of-flight mass spectrometry system was established for screening potential active components and clarifying the active fraction of Yuanhu–Baizhi pair. APTES was modified on the surface of silica, which can provide an amino group to covalently link cell membrane fragments with the help of glutaraldehyde in order to improve the stability and column life span of the MCF7 CMC column. The comprehensive 2D MCF7-CMC system showed good separation and identification abilities. Our screen results showed that the retention components are mainly from the alkaloids in Yuanhu (12 compounds) and the coumarins (10 compounds) in Baizhi, revealing the active fractions of Yuanhu–Baizhi herbal medicine pair. Oxoglaucine, protopine, berberine, osthole, isopimpinellin and palmitic acid were selected as typical components to test the effects on cell proliferation and their IC50 were calculated as 38.17 μM, 29.45 μM, 45.42 μM, 132.7 μM, 156.8 μM and 90.5 μM respectively. Cell apoptosis assay showed that the drug efficacy was obtained mainly through inducing cell apoptosis. Furthermore, a synergistic assay results demonstrated that oxoglaucine (representative of alkaloids from Yuanhu) and isopimpinellin (representative of coumarins from Baizhi) showed significant synergistic efficacy with GFT, indicating that these components may act on other membrane receptors. The proposed 2D CMC system could also be equipped with other cells for further applications. Besides, the follow-up in-vitro experimental strategy using cell proliferation assay, cell apoptosis assay and synergistic assay proved to be a practical way to confirm the active fractions of herbal medicine.
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Affiliation(s)
- Xiao-Yu Wang
- School of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Xuan Ding
- Department of Pharmacy & Medical Appliance, Hangzhou Sanatorium of PLA, Hangzhou, Zhejiang 310000, China
| | - Yong-Fang Yuan
- Department of Pharmacy, Shanghai 9th People's Hospital, No. 280 Mohe Road, Shanghai 201999, China
| | - Le-Yi Zheng
- School of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Yan Cao
- School of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Zhen-Yu Zhu
- School of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Guo-Qing Zhang
- Department of Pharmacy, Eastern Hepatobiliary Surgery Hospital, No. 225 Changhai Road, Shanghai 200438, China
| | - Yi-Feng Chai
- School of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Xiao-Fei Chen
- School of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, China.
| | - Zhan-Ying Hong
- School of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, China.
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Polcari D, Hernández-Castro JA, Li K, Geissler M, Mauzeroll J. Determination of the Relationship between Expression and Functional Activity of Multidrug Resistance-Associated Protein 1 using Scanning Electrochemical Microscopy. Anal Chem 2017; 89:8988-8994. [DOI: 10.1021/acs.analchem.7b01601] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- David Polcari
- Department
of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC H3A
0B8, Canada
| | | | - Kebin Li
- Life Sciences
Division, National Research Council of Canada, 75 de Mortagne Boulevard, Boucherville, QC J4B 6Y4, Canada
| | - Matthias Geissler
- Life Sciences
Division, National Research Council of Canada, 75 de Mortagne Boulevard, Boucherville, QC J4B 6Y4, Canada
| | - Janine Mauzeroll
- Department
of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC H3A
0B8, Canada
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8
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Singh NS, Habicht KL, Moaddel R, Shimmo R. Development and characterization of mitochondrial membrane affinity chromatography columns derived from skeletal muscle and platelets for the study of mitochondrial transmembrane proteins. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1055-1056:144-148. [PMID: 28475928 DOI: 10.1016/j.jchromb.2017.04.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 04/05/2017] [Accepted: 04/12/2017] [Indexed: 12/25/2022]
Abstract
Mitochondrial membrane fragments from human platelets and monkey skeletal muscles were successfully immobilized onto immobilized artificial membrane chromatographic support for the first time, resulting in mitochondrial membrane affinity chromatography (MMAC) columns. These columns were validated by characterization of translocator protein (TSPO), where multiple concentrations of dipyridamole were run and the binding affinities (Kd) determined. Further, the relative ranking data of TSPO ligands was consistent with previously reported rankings for both, the platelet (MMAC-Platelet) and the skeletal muscle (MMAC-Muscle) column (dipyridamole>PK11195>protoporphyrin IX>rotenone). The functional immobilization of the F-ATPase/ATP synthase was demonstrated on MMAC-Muscle column. Online hydrolysis of ATP to ADP and synthesis of ATP from ADP were both demonstrated on the MMAC-Muscle column. Hydrolysis of ATP to ADP was inhibited by oligomycin A with an IC50 of 40.2±13.5nM (∼60% reduction in ATP hydrolysis, p<0.001), similar to previously reported values. Additionally, the Michaelis-Menten constant (Km) for ADP was found to be 1525±461μM based on the on column dose-dependent increase in ATP production.
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Affiliation(s)
- Nagendra Surendra Singh
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Suite 100, 21224 Baltimore, MD, USA
| | - Kaia-Liisa Habicht
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Suite 100, 21224 Baltimore, MD, USA; School of Natural Sciences and Health, Tallinn University, Narva mnt 29, 10120 Tallinn, Estonia
| | - Ruin Moaddel
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Suite 100, 21224 Baltimore, MD, USA
| | - Ruth Shimmo
- School of Natural Sciences and Health, Tallinn University, Narva mnt 29, 10120 Tallinn, Estonia.
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9
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Ding X, Cao Y, Yuan Y, Gong Z, Liu Y, Zhao L, Lv L, Zhang G, Wang D, Jia D, Zhu Z, Hong Z, Chen X, Chai Y. Development of APTES-Decorated HepG2 Cancer Stem Cell Membrane Chromatography for Screening Active Components from Salvia miltiorrhiza. Anal Chem 2016; 88:12081-12089. [PMID: 28193057 DOI: 10.1021/acs.analchem.6b02709] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xuan Ding
- School
of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, PR China
| | - Yan Cao
- School
of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, PR China
| | - Yongfang Yuan
- Department
of Pharmacy, Shanghai ninth People’s Hospital, No. 280 Mohe
Road, Shanghai 201999, PR China
| | - Zhirong Gong
- School
of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, PR China
| | - Yue Liu
- School
of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, PR China
| | - Liang Zhao
- Department
of Pharmacy, Eastern Hepatobiliary Surgery Hospital, No. 225 Changhai
Road, Shanghai 200438, PR China
| | - Lei Lv
- Department
of Pharmacy, Eastern Hepatobiliary Surgery Hospital, No. 225 Changhai
Road, Shanghai 200438, PR China
| | - Guoqing Zhang
- Department
of Pharmacy, Eastern Hepatobiliary Surgery Hospital, No. 225 Changhai
Road, Shanghai 200438, PR China
| | - Dongyao Wang
- School
of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, PR China
| | - Dan Jia
- School
of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, PR China
| | - Zhenyu Zhu
- School
of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, PR China
| | - Zhanying Hong
- School
of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, PR China
| | - Xiaofei Chen
- School
of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, PR China
| | - Yifeng Chai
- School
of Pharmacy, Second Military Medical University, No. 325 Guohe Road, Shanghai 200433, PR China
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10
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Cieśla Ł, Moaddel R. Comparison of analytical techniques for the identification of bioactive compounds from natural products. Nat Prod Rep 2016; 33:1131-45. [PMID: 27367973 PMCID: PMC5042860 DOI: 10.1039/c6np00016a] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Covering: 2000 to 2016Natural product extracts are a rich source of bioactive compounds. As a result, the screening of natural products for the identification of novel biologically active metabolites has been an essential part of several drug discovery programs. It is estimated that more than 70% of all drugs approved from 1981 and 2006, were either derived from or structurally similar to nature based compounds indicating the necessity for the development of a rapid method for the identification of novel compounds from plant extracts. The screening of biological matrices for the identification of novel modulators is nevertheless still challenging. In this review we discuss current techniques in phytochemical analysis and the identification of biologically active components.
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Affiliation(s)
- Łukasz Cieśla
- Laboratory of Clinical Investigation, Biomedical Research Center, 8C232, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Baltimore, Maryland 21224, USA.
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11
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Tsopelas F, Vallianatou T, Tsantili-Kakoulidou A. Advances in immobilized artificial membrane (IAM) chromatography for novel drug discovery. Expert Opin Drug Discov 2016; 11:473-88. [DOI: 10.1517/17460441.2016.1160886] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Fotios Tsopelas
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Athens, Zografou, Athens, Greece
- Laboratory of Inorganic and Analytical Chemistry, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | - Theodosia Vallianatou
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Athens, Zografou, Athens, Greece
| | - Anna Tsantili-Kakoulidou
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Athens, Zografou, Athens, Greece
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12
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Abstract
Chemoresistant metastatic relapse of minimal residual disease plays a significant role for poor prognosis of cancer. Growing evidence supports a critical role of cancer stem cell (CSC) behind the mechanisms for this deadly disease. This review briefly introduces the basics of the conventional chemotherapies, updates the CSC theories, highlights the molecular and cellular mechanisms by which CSC smartly designs and utilizes multiple lines of self-defense to avoid being killed by chemotherapy, and concisely summarizes recent progress in studies on CSC-targeted therapies in the end, with the hope to help guide future research toward developing more effective therapeutic strategies to eradicate tumor cells in the patients.
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Affiliation(s)
- Jihe Zhao
- Burnett School of Biomedical Sciences, University of Central Florida College of Medicine, 6900 Lake Nona Boulevard, Orlando, FL 32827, USA.
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13
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Habicht KL, Singh NS, Indig FE, Wainer IW, Moaddel R, Shimmo R. The development of mitochondrial membrane affinity chromatography columns for the study of mitochondrial transmembrane proteins. Anal Biochem 2015; 484:154-61. [PMID: 26049098 DOI: 10.1016/j.ab.2015.05.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 05/27/2015] [Accepted: 05/29/2015] [Indexed: 11/18/2022]
Abstract
Mitochondrial membrane fragments from U-87 MG (U87MG) and HEK-293 cells were successfully immobilized onto immobilized artificial membrane (IAM) chromatographic support and surface of activated open tubular (OT) silica capillary, resulting in mitochondrial membrane affinity chromatography (MMAC) columns. Translocator protein (TSPO), located in mitochondrial outer membrane as well as sulfonylurea and mitochondrial permeability transition pore (mPTP) receptors, localized to the inner membrane, were characterized. Frontal displacement experiments with multiple concentrations of dipyridamole (DIPY) and PK-11195 were run on MMAC (U87MG) column, and the binding affinities (Kd) determined were 1.08±0.49 and 0.0086±0.0006μM, respectively, consistent with previously reported values. Furthermore, binding affinities (Ki) for DIPY binding site were determined for TSPO ligands, PK-11195, mesoporphyrin IX, protoporphyrin IX, and rotenone. In addition, the relative ranking of these TSPO ligands based on single displacement studies using DIPY as marker on MMAC (U87MG) was consistent with the obtained Ki values. The immobilization of mitochondrial membrane fragments was also confirmed by confocal microscopy.
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Affiliation(s)
- K-L Habicht
- Department of Natural Sciences, Institute of Mathematics and Natural Sciences, Tallinn University, 10120 Tallinn, Estonia; Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - N S Singh
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - F E Indig
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - I W Wainer
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - R Moaddel
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - R Shimmo
- Department of Natural Sciences, Institute of Mathematics and Natural Sciences, Tallinn University, 10120 Tallinn, Estonia.
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Singh NS, Habicht KL, Dossou KSS, Shimmo R, Wainer IW, Moaddel R. Multiple protein stationary phases: a review. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 968:64-8. [PMID: 24780640 PMCID: PMC4127356 DOI: 10.1016/j.jchromb.2014.04.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 03/28/2014] [Accepted: 04/03/2014] [Indexed: 11/27/2022]
Abstract
Cellular membrane affinity chromatography stationary phases have been extensively used to characterize immobilized proteins and provide a direct measurement of multiple binding sites, including orthosteric and allosteric sites. This review will address the utilization of immobilized cellular and tissue fragments to characterize multiple transmembrane proteins co-immobilized onto a stationary phase. This approach will be illustrated by demonstrating that multiple transmembrane proteins were immobilized from cell lines and tissue fragments. In addition, the immobilization of individual compartments/organelles within a cell will be discussed and the changes in the proteins binding/kinetics based on their location.
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Affiliation(s)
- N S Singh
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Suite 100, Baltimore, MD 21224, USA
| | - K-L Habicht
- Department of Natural Sciences, Institute of Mathematics and Natural Sciences, Tallinn University, Narva mnt. 29, 10120 Tallinn, Estonia
| | - K S S Dossou
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Suite 100, Baltimore, MD 21224, USA
| | - R Shimmo
- Department of Natural Sciences, Institute of Mathematics and Natural Sciences, Tallinn University, Narva mnt. 29, 10120 Tallinn, Estonia
| | - I W Wainer
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Suite 100, Baltimore, MD 21224, USA
| | - R Moaddel
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Suite 100, Baltimore, MD 21224, USA.
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15
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Takaku T, Mikata K, Nagahori H, Sogame Y. Identification of metabolites of propyrisulfuron in rats. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 955-956:64-71. [PMID: 24631812 DOI: 10.1016/j.jchromb.2014.02.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 02/12/2014] [Accepted: 02/16/2014] [Indexed: 11/26/2022]
Abstract
The metabolites found in the urine, feces and bile of male and female rats administered with (14)C-labeled herbicide, propyrisulfuron [1-(2-chloro-6-propylimidazo[1,2-b]pyridazin-3-ylsulfonyl)-3- (4,6-dimethoxypyrimidin-2-yl)urea] were identified by high-performance liquid chromatography (HPLC) with the ultraviolet (UV) and radioisotope (RI) detectors, tandem mass spectrometry and nuclear magnetic resonance (NMR). Administered (14)C was excreted into the urine (5.7-29.8%) and feces (64.6-97.4%). Urine and bile samples were concentrated and purified using a solid-phase extraction cartridge, and fecal homogenates were extracted using acetonitrile. Conjugates were hydrolyzed with enzyme or hydrochloric acid solution for identification. The proposed major metabolic reactions of propyrisulfuron are as follows: (1) hydroxylation of the pyrimidine ring, propyl group, and imidazopyridazine ring, (2) O-demethylation, (3) cleavage of the pyrimidine ring, and (4) glucuronic acid and sulfate conjugation. The metabolic patterns found are not different among sulfonylurea herbicides.
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Affiliation(s)
- Tomoyuki Takaku
- Environmental Health Science Laboratory, Sumitomo Chemical Co., Ltd., 1-98, 3-Chome, Kasugade-Naka, Konohana-Ku, Osaka 554-8558, Japan.
| | - Kazuki Mikata
- Environmental Health Science Laboratory, Sumitomo Chemical Co., Ltd., 1-98, 3-Chome, Kasugade-Naka, Konohana-Ku, Osaka 554-8558, Japan
| | - Hirohisa Nagahori
- Environmental Health Science Laboratory, Sumitomo Chemical Co., Ltd., 1-98, 3-Chome, Kasugade-Naka, Konohana-Ku, Osaka 554-8558, Japan
| | - Yoshihisa Sogame
- Environmental Health Science Laboratory, Sumitomo Chemical Co., Ltd., 1-98, 3-Chome, Kasugade-Naka, Konohana-Ku, Osaka 554-8558, Japan
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