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Api AM, Belsito D, Botelho D, Bruze M, Burton GA, Cancellieri MA, Chon H, Dagli ML, Dekant W, Deodhar C, Fryer AD, Jones L, Joshi K, Kumar M, Lapczynski A, Lavelle M, Lee I, Liebler DC, Moustakas H, Muldoon J, Penning TM, Ritacco G, Romine J, Sadekar N, Schultz TW, Selechnik D, Siddiqi F, Sipes IG, Sullivan G, Thakkar Y, Tokura Y. RIFM fragrance ingredient safety assessment, ethyl benzoylacetate, CAS registry number 94-02-0. Food Chem Toxicol 2024; 183 Suppl 1:114310. [PMID: 38056815 DOI: 10.1016/j.fct.2023.114310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/30/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023]
Affiliation(s)
- A M Api
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - D Belsito
- Member Expert Panel for Fragrance Safety, Columbia University Medical Center, Department of Dermatology, 161 Fort Washington Ave., New York, NY, 10032, USA
| | - D Botelho
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - M Bruze
- Member Expert Panel for Fragrance Safety, Malmo University Hospital, Department of Occupational & Environmental Dermatology, Sodra Forstadsgatan 101, Entrance 47, Malmo, SE-20502, Sweden
| | - G A Burton
- Member Expert Panel for Fragrance Safety, School of Natural Resources & Environment, University of Michigan, Dana Building G110, 440 Church St., Ann Arbor, MI, 58109, USA
| | - M A Cancellieri
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - H Chon
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - M L Dagli
- Member Expert Panel for Fragrance Safety, University of Sao Paulo, School of Veterinary Medicine and Animal Science, Department of Pathology, Av. Prof. dr. Orlando Marques de Paiva, 87, Sao Paulo, CEP 05508-900, Brazil
| | - W Dekant
- Member Expert Panel for Fragrance Safety, University of Wuerzburg, Department of Toxicology, Versbacher Str. 9, 97078, Würzburg, Germany
| | - C Deodhar
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - A D Fryer
- Member Expert Panel for Fragrance Safety, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd., Portland, OR, 97239, USA
| | - L Jones
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - K Joshi
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - M Kumar
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - A Lapczynski
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - M Lavelle
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - I Lee
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - D C Liebler
- Member Expert Panel for Fragrance Safety, Vanderbilt University School of Medicine, Department of Biochemistry, Center in Molecular Toxicology, 638 Robinson Research Building, 2200 Pierce Avenue, Nashville, TN, 37232-0146, USA
| | - H Moustakas
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - J Muldoon
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - T M Penning
- Member of Expert Panel for Fragrance Safety, University of Pennsylvania, Perelman School of Medicine, Center of Excellence in Environmental Toxicology, 1316 Biomedical Research Building (BRB) II/III, 421 Curie Boulevard, Philadelphia, PA, 19104-3083, USA
| | - G Ritacco
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - J Romine
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - N Sadekar
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - T W Schultz
- Member Expert Panel for Fragrance Safety, The University of Tennessee, College of Veterinary Medicine, Department of Comparative Medicine, 2407 River Dr., Knoxville, TN, 37996- 4500, USA
| | - D Selechnik
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - F Siddiqi
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - I G Sipes
- Member Expert Panel for Fragrance Safety, Department of Pharmacology, University of Arizona, College of Medicine, 1501 North Campbell Avenue, P.O. Box 245050, Tucson, AZ, 85724-5050, USA
| | - G Sullivan
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA.
| | - Y Thakkar
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA
| | - Y Tokura
- Member Expert Panel for Fragrance Safety, The Journal of Dermatological Science (JDS), Department of Dermatology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, 431-3192, Japan
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Li C, Lin X, Wang S, Guan D, Wang X, Yang B, Zhou X, Li J, Xiong B, Liu Y, Sun Y. A New Brominated Isocoumarin from the Marine Starfish-Associated Fungus Aspergillus sp. WXF1904. Chem Biodivers 2024; 21:e202301706. [PMID: 38079052 DOI: 10.1002/cbdv.202301706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 12/05/2023] [Indexed: 02/22/2024]
Abstract
Based on the one strain many compounds strategy, a new brominated isocoumarin, 5-bromo-6,8-dihydroxy-3,7-dimethylisocoumarin (1), along with four new natural products, methyl 3-bromo-2,4-dihydroxy-6-methylbenzoate (2), methyl 2-bromo-4,6-dihydroxybenzoate (3), (E)-3-(3-bromo-4-hydroxyphenyl) acrylic acid (4) and 4-hydroxy-3-methyl-6-phenyl-2H-pyran-2-one (5), and four known compounds, methyl orsellinate (6), 4-hydroxy-3-methyl-6-(1-methyl-1-propenyl)-2H-pyran-2-one (7), pilobolusate (8) and cis-ferulic acid (9), were isolated from the ethyl acetate extract of the fungus Aspergillus sp. WXF1904 under the condition of adding bromine salt to the production medium. The structures of the new compounds were established by analysis of NMR and MS data. Compounds (1-9) were evaluated for inhibitory activity of acetylcholinesterase and pancreatic lipase, the new compound 1, known compounds 6 and 7 displayed weak inhibitory activity against acetylcholinesterase, compounds 2, 5, 7 and 8 showed weak inhibitory activity against pancreatic lipase.
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Affiliation(s)
- Chao Li
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Provincial Key Laboratory of Biotechnology of Shaanxi Province, the College of Life Sciences, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Xiuping Lin
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Shiwei Wang
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Provincial Key Laboratory of Biotechnology of Shaanxi Province, the College of Life Sciences, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
| | - Da Guan
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Xiaofang Wang
- Marine Environmental Engineering Center, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China
| | - Bin Yang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Xuefeng Zhou
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Jianfang Li
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Provincial Key Laboratory of Biotechnology of Shaanxi Province, the College of Life Sciences, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
| | - Bentao Xiong
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Provincial Key Laboratory of Biotechnology of Shaanxi Province, the College of Life Sciences, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Yanmei Sun
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Provincial Key Laboratory of Biotechnology of Shaanxi Province, the College of Life Sciences, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
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3
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Fadilah F, Andrajati R, Arsianti A, Paramita RI, Erlina L, Istiadi KA, Yanuar A. Synthesis and in vitro Activity of Eugenyl Benzoate Derivatives as BCL-2 Inhibitor in Colorectal Cancer with QSAR and Molecular Docking Approach. Asian Pac J Cancer Prev 2023; 24:2973-2981. [PMID: 37774047 PMCID: PMC10762746 DOI: 10.31557/apjcp.2023.24.9.2973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 09/15/2023] [Indexed: 10/01/2023] Open
Abstract
OBJECTIVE This study is aimed to acquiring new compounds of Eugenyl benzoate (2-methoxy-4-(prop-2-en-1-yl)phenyl benzoate) derivatives that can inhibit HT29 colorectal cancer cells. METHODS In this research, we used several chemical reactions to synthesize novel compounds, such as Esterification, Demethylation, Halohydrin, and Sharpless reaction. Cytotoxicity assays were performed to test the inhibitory activity of compounds against HT29 colon cancer cells. QSAR analysis were carried out to analyse the relationship of chemical structure of the novel compounds with their cytotoxic activity. RESULT Ten novel compounds were successfully synthesized and tested in vitro against the HT29 cell. The IC50 of the novel compounds were between 26.56 µmol/ml - 286.81 µmol/ml which compound 4-[(2S)-2,3-dihydroxypropyl]-2-methoxyphenyl 2-hydroxybenzoate (9) showed as best active compound as BCL-2 inhibitors better than other synthesized compounds and Eugenol as well. QSAR analysis of the in vitro results gave a Log equation: 1/IC50 = -0.865-0.210 (LogP)2 + 1,264 (logP)-0.994 CMR (n = 10; r = 0.706; SE: 0.21; F = 0.497, sig = 7.86). The equation shows the log variable P and CMR affect IC50. The properties of hydrophobicity (log P) are more instrumental than the ones of steric (CMR). CONCLUSION The active compound (9) given best activities as BCL-2 inhibitors than other eugenol derivatives. QSAR indicates the logP and CMR have effect on its colorectal cytotoxic activity which the hydrophobicity parameter (logP) plays more role than the steric parameter (CMR).
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Affiliation(s)
- Fadilah Fadilah
- Department of Medical Chemistry, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia.
- Bioinformatics Core Facilities, Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia.
- Drug Development Research Center, Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia.
- Master’s Program in Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia.
| | | | - Ade Arsianti
- Department of Medical Chemistry, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia.
- Drug Development Research Center, Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia.
| | - Rafika Indah Paramita
- Department of Medical Chemistry, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia.
- Bioinformatics Core Facilities, Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia.
- Master’s Program in Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia.
| | - Linda Erlina
- Department of Medical Chemistry, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia.
- Bioinformatics Core Facilities, Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia.
- Master’s Program in Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia.
| | - Khaerunissa Anbar Istiadi
- Drug Development Research Center, Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia.
| | - Arry Yanuar
- Faculty of Pharmacy, Universitas Indonesia, Depok, Indonesia.
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4
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Losa R, Lorton C, Retailleau P, Bignon J, Voituriez A. Fluorinated 2-Azetines: Synthesis, Applications, Biological Tests, and Development of a Catalytic Process. Org Lett 2023; 25:5140-5144. [PMID: 37390327 DOI: 10.1021/acs.orglett.3c01888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2023]
Abstract
An efficient and straightforward phosphine-promoted tandem aza-Michael addition/intramolecular Wittig reaction was developed for the synthesis of polyfunctionalized 2-azetines. After demonstrating that this transformation could be made catalytic in phosphine through in situ reduction of phosphine oxide with phenylsilane, different post-transformation steps have been demonstrated, including an original [2 + 2] photodimerization. Preliminary biological tests highlighted that these fluorinated 1,2-dihydroazete-2,3-dicarboxylates exhibited significant cytotoxicity against the human tumor cell line.
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Affiliation(s)
- Romain Losa
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Charlotte Lorton
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Pascal Retailleau
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Jérôme Bignon
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Arnaud Voituriez
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
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5
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Baranowska K, Mońka M, Bojarski P, Józefowicz M. Insight into Molecular Interactions of Two Methyl Benzoate Derivatives with Bovine Serum Albumin. Int J Mol Sci 2021; 22:11705. [PMID: 34769135 PMCID: PMC8584066 DOI: 10.3390/ijms222111705] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 11/16/2022] Open
Abstract
The nature and mechanisms of interaction between two selected methyl benzoate derivatives (methyl o-methoxy p-methylaminobenzoate-I and methyl o-hydroxy p-methylaminobenzoate-II) and model transport protein bovine serum albumin (BSA) was studied using steady-state and time-resolved spectroscopic techniques. In order to understand the role of Trp residue of BSA in the I-BSA and II-BSA interaction, the effect of free Trp amino acid on the both emission modes (LE-locally excited (I and II) and ESIPT-excited state intramolecular proton transfer (II)) was investigated as well. Experimental results show that the investigated interactions (with both BSA and Trp) are mostly conditioned by the ground and excited state complex formation processes. Both molecules form stable complexes with BSA and Trp (with 1:1 stoichiometry) in the ground and excited states. The binding constants were in the order of 104 M-1. The absorption- and fluorescence-titration experiments along with the time-resolved fluorescence measurements show that the binding of the I and II causes fluorescence quenching of BSA through the static mechanism, revealing a 1:1 interaction. The magnitude and the sign of the thermodynamic parameters, ΔH, ΔS, and ΔG, determined from van't Hoff relationship, confirm the predominance of the hydrogen-bonding interactions for the binding phenomenon. To improve and complete knowledge of methyl benzoate derivative-protein interactions in relation to supramolecular solvation dynamics, the time-dependent fluorescence Stokes' shifts, represented by the normalized spectral response function c(t), was studied. Our studies reveal that the solvation dynamics that occurs in subpicosecond time scale in neat solvents of different polarities is slowed down significantly when the organic molecule is transferred to BSA cavity.
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Affiliation(s)
| | | | | | - Marek Józefowicz
- Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, Wita Stwosza 57, 80-308 Gdańsk, Poland; (K.B.); (M.M.); (P.B.)
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6
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He X, Dong J, Han H, Sun N, Shi W, Lu X, Jia H, Lu X. A Novel Electrochemical Aptasensor for the Ultrasensitive Detection of Adenosine Triphosphate Based on DNA-Templated Copolymers. ACS Appl Mater Interfaces 2021; 13:35561-35567. [PMID: 34296595 DOI: 10.1021/acsami.1c10173] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Adenosine triphosphate (ATP) is a small but significant biological molecule that plays an important role in regulating cellular metabolism processes. Accurate and sensitive analytical techniques for detecting ATP are urgently needed. Herein, a new electrochemical aptasensor was designed in light of DNA-templated copolymers that parallel to the electrode for sensitive gauging of ATP. The ATP aptamer decorated by the electronic medium ferrocene can be regarded as a ″bridge″ connecting two DNA-templated copolymers. When ATP exists, because of the extraordinary binding selectivity of DNA-templated copolymers for target ATP, the rapid electron transfer of ferrocene was beneficial to the sensitive detection of target ATP. Specifically, our parallel DNA copolymers are more stable than upright DNA copolymers and have a faster signal transmission because of the close distance to the electrode; meanwhile, the nonspecific pollution is less. Consequently, the developed novel aptasensor exhibited a wide range of linear response toward ATP that was from 0.1 to 10 000 pM and high selectivity with a detection limit down to 11.5 fM. The electrochemical aptasensor has a broad application prospect in the detection of small biological molecules.
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Affiliation(s)
- Xiaoyan He
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P.R. China
| | - Jiandi Dong
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P.R. China
| | - Huimin Han
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P.R. China
| | - Nan Sun
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P.R. China
| | - Wenyu Shi
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P.R. China
| | - Xiong Lu
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P.R. China
| | - Hui Jia
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P.R. China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P.R. China
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7
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Hokazono E, Ota E, Goto T, Fukumoto S, Kayamori Y, Uchiumi T, Osawa S. Development of a protein assay with copper chelator chromeazurol B, based on the biuret reaction. Anal Biochem 2021; 630:114320. [PMID: 34343480 DOI: 10.1016/j.ab.2021.114320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/20/2021] [Accepted: 07/28/2021] [Indexed: 11/15/2022]
Abstract
This study aimed to provide a novel and highly sensitive protein assay based on the biuret reaction and using chromeazurol B, a metal chelate compound. The method consists of two reagents and an automated analyzer. First, a complex of copper and protein (biuret reaction) is formed. Second, a chelating reagent containing chromeazurol B forms a three-dimensional complex of protein, copper, and chromeazurol B at neutral pH, resulting in highly sensitive coloration. The intra-assay (n = 20) variation for the three levels was 3.54 % or lower at each concentration. Each response with α, β-, and γ-globulin was 103.8 % and 104.3 %, respectively, against albumin. The molar absorption coefficient (ε) of the present method was 2.5 × 105 m2/mol against human albumin, higher than that of the commercially available Lowry method (ε = 8.7 × 104 m2/mol), which is based on the same principle. The correlation test for the pyrogallol method with 30 urine samples showed good performance (r = 0.961). The method described here (the Biuret-based CAB method) is a more sensitive and rapid assay than the Lowry method, and it may also be applied to biological samples because of its similar reactivity towards various proteins.
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Affiliation(s)
- Eisaku Hokazono
- Division of Biological Science and Technology Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Japan.
| | - Eri Ota
- Division of Biological Science and Technology Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Japan; Research Center for Micro Blood Analysis, Leisure, Inc., Japan
| | - Taiki Goto
- Division of Biological Science and Technology Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Japan
| | - Saori Fukumoto
- Division of Biological Science and Technology Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Japan
| | - Yuzo Kayamori
- Division of Biological Science and Technology Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Japan
| | - Takeshi Uchiumi
- Division of Biological Science and Technology Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Japan
| | - Susumu Osawa
- Research Center for Micro Blood Analysis, Leisure, Inc., Japan; Medical Laboratory Sciences, Health Sciences, School of Health Sciences at Narita, International University of Health and Welfare Graduate School, Japan
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8
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Lozano ML, Segú-Vergés C, Coma M, Álvarez-Roman MT, González-Porras JR, Gutiérrez L, Valcárcel D, Butta N. Elucidating the Mechanism of Action of the Attributed Immunomodulatory Role of Eltrombopag in Primary Immune Thrombocytopenia: An In Silico Approach. Int J Mol Sci 2021; 22:ijms22136907. [PMID: 34199099 PMCID: PMC8269123 DOI: 10.3390/ijms22136907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/18/2021] [Accepted: 06/23/2021] [Indexed: 12/13/2022] Open
Abstract
Eltrombopag is a thrombopoietin receptor (MPL) agonist approved for the treatment of primary immune thrombocytopenia (ITP). Recent evidence shows that some patients may sustain platelet counts following eltrombopag discontinuation. The systemic immunomodulatory response that resolves ITP in some patients could result from an increase in platelet mass, caused either by the direct action of eltrombopag on megakaryocytes through MPL stimulation, or potential MPL-independent actions on other cell types. To uncover the possible mechanisms of action of eltrombopag, in silico analyses were performed, including a systems biology-based approach, a therapeutic performance mapping system, and structural analyses. Through manual curation of the available bibliography, 56 key proteins were identified and integrated into the ITP interactome analysis. Mathematical models (94.92% mean accuracy) were obtained to elucidate potential MPL-dependent pathways in non-megakaryocytic cell subtypes. In addition to the effects on megakaryocytes and platelet numbers, the results were consistent with MPL-mediated effects on other cells, which could involve interferon-gamma, transforming growth factor-beta, peroxisome proliferator-activated receptor-gamma, and forkhead box protein P3 pathways. Structural analyses indicated that effects on three apoptosis-related proteins (BCL2L1, BCL2, BAX) from the Bcl-2 family may be off-target effects of eltrombopag. In conclusion, this study proposes new hypotheses regarding the immunomodulatory functions of eltrombopag in patients with ITP.
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MESH Headings
- Benzoates/chemistry
- Benzoates/pharmacology
- Benzoates/therapeutic use
- Biomarkers
- Disease Management
- Disease Susceptibility
- Humans
- Hydrazines/chemistry
- Hydrazines/pharmacology
- Hydrazines/therapeutic use
- Immunomodulation/drug effects
- Models, Biological
- Models, Molecular
- Molecular Targeted Therapy/methods
- Protein Interaction Mapping
- Protein Interaction Maps
- Purpura, Thrombocytopenic, Idiopathic/drug therapy
- Purpura, Thrombocytopenic, Idiopathic/etiology
- Purpura, Thrombocytopenic, Idiopathic/metabolism
- Pyrazoles/chemistry
- Pyrazoles/pharmacology
- Pyrazoles/therapeutic use
- Receptors, Thrombopoietin/antagonists & inhibitors
- Receptors, Thrombopoietin/chemistry
- Receptors, Thrombopoietin/metabolism
- Signal Transduction/drug effects
- Structure-Activity Relationship
- T-Lymphocytes/drug effects
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- Treatment Outcome
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Affiliation(s)
- Maria L. Lozano
- Hospital General Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, CB15/00055-CIBERER, 30007 Murcia, Spain
- Correspondence: (M.L.L.); (N.B.)
| | - Cristina Segú-Vergés
- Anaxomics Biotech S.L., Diputació 237, 1°, 1, 08007 Barcelona, Spain; (C.S.-V.); (M.C.)
| | - Mireia Coma
- Anaxomics Biotech S.L., Diputació 237, 1°, 1, 08007 Barcelona, Spain; (C.S.-V.); (M.C.)
| | - María T. Álvarez-Roman
- Unidad de Trombosis y Hemostasia, Servicio de Hematología, Hospital Universitario La Paz, Instituto de Investigación Hospital Universitario La Paz (IdiPAZ), Paseo de la Castellana 261, 28046 Madrid, Spain;
| | - José R. González-Porras
- Unidad de Hemostasia y Trombosis, Servicio de Hematología, Hospital Universitario de Salamanca, Instituto de Investigación Biomédica de Salamanca (IBSAL), Paseo de San Vicente, 58-182, 37007 Salamanca, Spain;
| | - Laura Gutiérrez
- Grupo de Investigación en Plaquetas, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Departamento de Medicina, Universidad de Oviedo, 33071 Oviedo, Spain;
| | - David Valcárcel
- Servicio Hematología, Vall d´Hebron Insitute of Oncology (VHIO), Hospital Univesitario Vall d’Hebron, Universitat Autònoma de Barcelona, Centro Cellex, Natzaret, 115-117, 08035 Barcelona, Spain;
| | - Nora Butta
- Instituto de Investigación HospitaUniversitario La Paz (IdiPAZ), Paseo de la Castellana 261, 28046 Madrid, Spain
- Correspondence: (M.L.L.); (N.B.)
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9
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Soto N, Ferrer K, Díaz K, González C, Taborga L, Olea AF, Carrasco H, Espinoza L. Synthesis and Biological Activity of New Brassinosteroid Analogs of Type 24-Nor-5β-Cholane and 23-Benzoate Function in the Side Chain. Int J Mol Sci 2021; 22:ijms22094808. [PMID: 34062717 PMCID: PMC8124218 DOI: 10.3390/ijms22094808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 04/22/2021] [Accepted: 04/24/2021] [Indexed: 11/16/2022] Open
Abstract
Brassinosteroids are polyhydroxysteroids that are involved in different plants’ biological functions, such as growth, development and resistance to biotic and external stresses. Because of its low abundance in plants, much effort has been dedicated to the synthesis and characterization of brassinosteroids analogs. Herein, we report the synthesis of brassinosteroid 24-nor-5β-cholane type analogs with 23-benzoate function and 22,23-benzoate groups. The synthesis was accomplished with high reaction yields in a four-step synthesis route and using hyodeoxycholic acid as starting material. All synthesized analogs were tested using the rice lamina inclination test to assess their growth-promoting activity and compare it with those obtained for brassinolide, which was used as a positive control. The results indicate that the diasteroisomeric mixture of monobenzoylated derivatives exhibit the highest activity at the lowest tested concentrations (1 × 10−8 and 1 × 10−7 M), being even more active than brassinolide. Therefore, a simple synthetic procedure with high reaction yields that use a very accessible starting material provides brassinosteroid synthetic analogs with promising effects on plant growth. This exploratory study suggests that brassinosteroid analogs with similar chemical structures could be a good alternative to natural brassinosteroids.
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Affiliation(s)
- Nitza Soto
- Departamento de Química, Universidad Técnica Federico Santa María, Valparaíso, CP 2340000, Chile; (N.S.); (K.F.); (K.D.); (C.G.); (L.T.)
| | - Karoll Ferrer
- Departamento de Química, Universidad Técnica Federico Santa María, Valparaíso, CP 2340000, Chile; (N.S.); (K.F.); (K.D.); (C.G.); (L.T.)
| | - Katy Díaz
- Departamento de Química, Universidad Técnica Federico Santa María, Valparaíso, CP 2340000, Chile; (N.S.); (K.F.); (K.D.); (C.G.); (L.T.)
| | - César González
- Departamento de Química, Universidad Técnica Federico Santa María, Valparaíso, CP 2340000, Chile; (N.S.); (K.F.); (K.D.); (C.G.); (L.T.)
| | - Lautaro Taborga
- Departamento de Química, Universidad Técnica Federico Santa María, Valparaíso, CP 2340000, Chile; (N.S.); (K.F.); (K.D.); (C.G.); (L.T.)
| | - Andrés F. Olea
- Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, Santiago, CP 8900000, Chile;
- Correspondence: (A.F.O.); (L.E.); Tel.: +56-32-2654425 (L.E.)
| | - Héctor Carrasco
- Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, Santiago, CP 8900000, Chile;
| | - Luis Espinoza
- Departamento de Química, Universidad Técnica Federico Santa María, Valparaíso, CP 2340000, Chile; (N.S.); (K.F.); (K.D.); (C.G.); (L.T.)
- Correspondence: (A.F.O.); (L.E.); Tel.: +56-32-2654425 (L.E.)
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10
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Peng F, Tan Y, Zhang S, Yu X, Chen H, Dang X, Liu X. Moisture-sensitive metal-organic framework constructed from cobalt and 4-(4-pyridyl) benzoic acid for dispersive solid-phase extraction of polycyclic aromatic hydrocarbons in apple. J Sep Sci 2021; 44:1706-1715. [PMID: 33624922 DOI: 10.1002/jssc.202001158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 02/16/2021] [Accepted: 02/18/2021] [Indexed: 11/07/2022]
Abstract
A moisture-sensitive metal-organic framework CoII (pybz)2 ·2DMF was synthesized and applied as the adsorbent of dispersive solid-phase extraction. The structure changed after water treatment due to the fact that two chelate carboxylate groups on the skeleton were transformed to monodentate because of the coordination of water molecules. The material showed good adsorption for fluorene, phenanthrene, fluoranthene, and pyrene in water because of the π-π conjugation and π-complexation effects. Coupled with high-performance liquid chromatography, a dispersive solid-phase extraction method of determining the content of fluorene, phenanthrene, fluoranthene, and pyrene in apple samples was established after optimizing the extraction conditions. Methanol containing 4% acetic acid was used as the effective eluent. The linearities were 0.5-1000 μg/kg for fluorene, phenanthrene and 5-1000 μg/kg for fluoranthene, pyrene. The limits of detection were 0.06-0.6 μg/kg, and the recoveries were 94.4-116.4%. The method has a high sensitivity for the determination of four polycyclic aromatic hydrocarbons in apple samples.
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Affiliation(s)
- Fan Peng
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan, P. R. China
| | - Yuyan Tan
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan, P. R. China
| | - Shanshan Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan, P. R. China
| | - Xiaofang Yu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan, P. R. China
| | - Huaixia Chen
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan, P. R. China
| | - Xueping Dang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan, P. R. China
| | - Xiaolan Liu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan, P. R. China
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11
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Ferrer K, Díaz K, Kvasnica M, Olea AF, Cuellar M, Espinoza L. Synthesis of New Brassinosteroid 24-Norcholane Type Analogs Conjugated in C-3 with Benzoate Groups. Molecules 2021; 26:1173. [PMID: 33671806 PMCID: PMC7927124 DOI: 10.3390/molecules26041173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/13/2021] [Accepted: 02/18/2021] [Indexed: 12/14/2022] Open
Abstract
The metabolism of brassinosteroid leads to structural modifications in the ring skeleton or the side alkyl chain. The esterification and glycosylation at C-3 are the most common metabolic pathways, and it has been suggested that conjugate brassinosteroids are less active or inactive. In this way, plants regulate the content of active brassinosteroids. In this work, the synthesis of brassinosteroid 24-norcholane type analogs conjugated at C-3 with benzoate groups, carrying electron donor and electron attractant substituents on the aromatic ring, is described. Additionally, their growth-promoting activities were evaluated using the Rice Lamina Inclination Test (RLIT) and compared with that exhibited by brassinolide (used as positive control) and non-conjugated analogs. The results indicate that at the lowest tested concentrations (10-8-10-7 M), all analogs conjugated at C-3 exhibit similar or higher activities than brassinolide, and the diasteroisomers with S configuration at C-22 are the more active ones. Increasing concentration (10-6 M) reduces the biological activities of analogs as compared to brassinolide.
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Affiliation(s)
- Karoll Ferrer
- Departamento de Química, Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile; (K.F.); (K.D.)
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences, Palacký University, Šlechtitelů 27, 78371 Olomouc, Czech Republic
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Katy Díaz
- Departamento de Química, Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile; (K.F.); (K.D.)
| | - Miroslav Kvasnica
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences, Palacký University, Šlechtitelů 27, 78371 Olomouc, Czech Republic
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Andrés F. Olea
- Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, El Llano Subercaseaux 2801, Santiago 8900000, Chile;
| | - Mauricio Cuellar
- Facultad de Farmacia, Escuela de Química y Farmacia, Universidad de Valparaíso, Av. Gran Bretaña 1093, Valparaíso 2340000, Chile;
| | - Luis Espinoza
- Departamento de Química, Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile; (K.F.); (K.D.)
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12
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Grajek H, Purchała M. Chromatographic study of electron acceptor-donor properties of of 4-(trans-4'-n-alkylcyclohexyl) benzoates. J Chromatogr A 2021; 1641:461994. [PMID: 33676112 DOI: 10.1016/j.chroma.2021.461994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 02/06/2021] [Accepted: 02/08/2021] [Indexed: 11/20/2022]
Abstract
A new approach of characterizing the specific properties of 4-(trans-4'-n-alkylcyclohexyl) benzoates, based on the interaction of the acidic and basic testing substances, for their form Crystalline, Smectic B and Nematic have been proposed. The testing substances selected for our study have been considered in the light of the results obtained in the previous research and the data available in the literature for other liquid crystals with different structures. The DN values denoting the electron donor number in the Gutmann scale and the AN* values indicating the acceptor number in the Riddle-Fowkes scale have been chosen in the estimation of the electron acceptor parameter KA and electron donor parameter KD values. The temperature-dependent quotients of KA to KD are employed for the assessment of the electron donor-acceptor properties of 4-(trans-4'-n-alkylcyclohexyl) benzoates. The 4-(trans-4'-n-alkyl cyclohexyl) benzoates tested have the affinity to act as a donor of electrons concerning electron acceptor of the testing substance. The sizes and shapes effects of the testing substances (or penetrants) and the LCs tested (or solvents while in mesophases) are taken into account. The inverse gas chromatography tests were supported by the Quantitative Structure-Activity Relationship modelling technique to determine which part (or group) of liquid crystals tested was dominant in the interaction with the testing substances.
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Affiliation(s)
- Henryk Grajek
- Institute of Chemistry, Military University of Technology, Warsaw, Poland.
| | - Marcin Purchała
- Institute of Chemistry, Military University of Technology, Warsaw, Poland
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13
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Carmona-Jiménez Y, Palma M, Guillén-Sánchez DA, García-Moreno MV. Study of the Cluster Thinning Grape as a Source of Phenolic Compounds and Evaluation of Its Antioxidant Potential. Biomolecules 2021; 11:biom11020227. [PMID: 33562786 PMCID: PMC7914544 DOI: 10.3390/biom11020227] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/01/2021] [Accepted: 02/02/2021] [Indexed: 12/29/2022] Open
Abstract
Thinning is a common viticulture practice in warm climates, and it is applied to increase the quality of the harvest. Thinning clusters are usually discarded, and they are considered another oenological industry waste. To valorize this by-product, the phenolic content and antioxidant activity of three red varieties (Tempranillo, Cabernet Sauvignon, and Syrah), thinned at three different times between veraison and harvest, were studied: the first at the beginning of the veraison stage, in a low ripening stage; the second in an intermediate ripening stage; and, finally, the third sampling in the highest ripening stage. These by-products showed high values of total phenolic contents (10.66–11.75 mg gallic acid equivalent/g), which is of the same order as or even higher than that found in grape pomace. In thinned grape were identified 24 phenolic compounds, being the flavan-3-ols (catechin and epicatechin) of particular interest, with mean contents ranging from 105.1 to 516.4 mg/kg of thinned grape. Antioxidant activity similar to that of the vintage grape was found. It is concluded that thinned grape is a good source of phenolic compounds. Its content does not depend mainly on the grape variety; however, it has been possible to establish differences based on the maturity stage of the thinning grapes: the intermediate ripeness stage, with a Brix degree in the range of 15–16 for this area, would be the optimum collection time for cluster thinning. In this intermediate ripeness stage, thinning grapes present a higher antioxidant activity and there is also appreciable anthocyanin content, which is not found for the lowest ripeness stage, since these samples present an intermediate composition in all the families of determined phenolic compounds: anthocyanins, flavonols, flavan-3-ols, cinnamic acids, and benzoic acids. It is important to note that the experiments in this study have been carried out with whole tinned grapes, without separating the skin or the seeds.
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14
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Li J, Gao G, Tang X, Yu M, He M, Sun T. Isomeric Effect of Nano-Inhibitors on Aβ 40 Fibrillation at The Nano-Bio Interface. ACS Appl Mater Interfaces 2021; 13:4894-4904. [PMID: 33486955 DOI: 10.1021/acsami.0c21906] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Chemical and physical properties of nanobio interface substantially affect the conformational transitions of adjacent biomolecules. Previous studies have reported the chiral effect and charge effect of nanobio interface on the misfolding, aggregation, and fibrillation of amyloid protein. However, the isomeric effect of nanobio interface on protein/peptides amyloidosis is still unclear. Here, three isomeric nanobio interfaces were designed and fabricated based on the same sized gold nanoclusters (AuNCs) modified with 4-mercaptobenzoic acid (p-MBA), 3-mercaptobenzoic acid (m-MBA), and 2-mercaptobenzoic acid (o-MBA). Then three isomeric AuNCs were employed as models to explore the isomeric effect on the misfolding, aggregation, and fibrillation of Aβ40 at nanobio interfaces. Site-specific replacement experiments on the basis of theoretical analysis revealed the possible mechanism of Aβ40 interacting with isomeric ligands of AuNCs at the nanobio interfaces. The distance and orientation of -COOH group from the surface of AuNCs can affect the electrostatic interaction between isomeric ligands and the positively charged residues (R5, K16, and K28) of Aβ40, which may affect the inhibition efficiency of isomeric AuNCs on protein amyloidosis. Actually, the amyloid fibrillation kinetics results together with atomic force microscope (AFM) images, dynamic light scattering (DLS) results and circular dichroism (CD) spectra indeed proved that all the three isomeric AuNCs could inhibit the misfolding, aggregation and fibrillation of Aβ40 in a dose-dependent manner, and the inhibition efficiency was definitely different from each other. The inhibition efficiency of o-MBA-AuNCs was higher than that of m-MBA-AuNCs and p-MBA-AuNCs at the same dosage. These results provide an insight for isomeric effect at nanobio interfaces, and open an avenue for structure-based nanodrug design target Alzheimer's disease (AD) and even other protein conformational diseases.
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Affiliation(s)
- Jianhang Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, No.122 Luoshi Road, Wuhan 430070, China
| | - Guanbin Gao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, No.122 Luoshi Road, Wuhan 430070, China
| | - Xintong Tang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, No.122 Luoshi Road, Wuhan 430070, China
| | - Meng Yu
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, No.122 Luoshi Road, Wuhan 430070, China
| | - Meng He
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, No.122 Luoshi Road, Wuhan 430070, China
| | - Taolei Sun
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, No.122 Luoshi Road, Wuhan 430070, China
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15
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Abbinante VM, Zampieri M, Barreca G, Masciocchi N. Preparation and Solid-State Characterization of Eltrombopag Crystal Phases. Molecules 2020; 26:molecules26010065. [PMID: 33375645 PMCID: PMC7795200 DOI: 10.3390/molecules26010065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 12/19/2020] [Accepted: 12/22/2020] [Indexed: 11/16/2022]
Abstract
Eltrombopag, of C25H22N4O4 chemical formula, is a drug used against thrombocytopenia, marketed worldwide under different tradenames in the form of its bis-olamine salt. The free acid (CAS no. 496775-61-2) is an intermediate species used for the final drug isolation and is reported to crystallize in more than 20 distinct crystal forms, including a large number of hydrates and solvates. Their identification, and, ultimately, their quantification in industrial lots require the usage of accurately measured X-ray powder diffraction pattern, as well as the assessment of the metrical features (crystal symmetry and lattice parameters), nowadays accessible by powerful crystallographic software. Here, the complete indexing of 13 monophasic samples, prepared using literature or newly tailored crystallization methods, jointly to simultaneous thermogravimetric and calorimetric analyses and to variable temperature X-ray diffraction studies, provide a clear picture of the stability fields of the different crystal phases and their mutual interconversion processes, leading, in a few cases, to new and unexpected crystalline polymorphs or solvates of the pristine unsolvated Form I.
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Affiliation(s)
- Vincenzo Mirco Abbinante
- Dipartimento di Scienza e Alta Tecnologia & To.Sca.Lab., Università dell’Insubria, via Valleggio 11, 22100 Como, Italy;
| | - Massimo Zampieri
- Chemessentia srl, via Bovio 6, 28100 Novara, Italy;
- Correspondence: (M.Z.); (N.M.); Tel.: +39-0321-650-255 (M.Z.); +39-031-238-6613 (N.M.)
| | | | - Norberto Masciocchi
- Dipartimento di Scienza e Alta Tecnologia & To.Sca.Lab., Università dell’Insubria, via Valleggio 11, 22100 Como, Italy;
- Correspondence: (M.Z.); (N.M.); Tel.: +39-0321-650-255 (M.Z.); +39-031-238-6613 (N.M.)
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16
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Rashid M, Rafique H, Roshan S, Shamas S, Iqbal Z, Ashraf Z, Abbas Q, Hassan M, Qureshi ZUR, Asad MHHB. Enzyme Inhibitory Kinetics and Molecular Docking Studies of Halo-Substituted Mixed Ester/Amide-Based Derivatives as Jack Bean Urease Inhibitors. Biomed Res Int 2020; 2020:8867407. [PMID: 33426080 PMCID: PMC7775144 DOI: 10.1155/2020/8867407] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/28/2020] [Accepted: 12/15/2020] [Indexed: 12/22/2022]
Abstract
A series of halo-substituted mixed ester/amide-based analogues 4a-l have been prepared as jack bean urease inhibitor, which showed good to excellent inhibition of enzyme activity. The role of halo-substituted benzoyl moieties and alkyl substituted anilines in urease inhibitory kinetics was also investigated. The alkyl-substituted anilines 1a-b reacted with chloroacetyl chloride to afford intermediates 2a-b, which were then reacted with different halo-substituted benzoic acids 3a-f to prepare the title compounds 4a-l. The chemical structures of final products 4a-l were ascertained by FTIR, 1H NMR, 13C NMR, and mass spectra. The compound 4b showed remarkable activity with IC501.6 ± 0.2 nM, better than the standard thiourea having IC50472.1 ± 135.1 nM. The 2-chloro-substituted phenyl ring on one side of compound 4b and 4-isopropyl-substituted benzene on the other side play an essential role in inhibition of urease activity. Lineweaver-Burk plots (kinetics study) indicated about 4b derivative as a mixed type of inhibitor. The virtual screening performed against urease enzyme (PDBID 4H9M) showed that compounds 4b and 4e have binding energies of -7.8 and -7.9 Kcal/mol, respectively. Based upon our results, it was found that derivative 4b is a highly potent urease inhibitor, better than the standard thiourea.
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Affiliation(s)
- Muhammad Rashid
- Department of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
| | - Hummera Rafique
- Department of Chemistry, University of Gujrat, Gujrat 50700, Pakistan
| | - Sadia Roshan
- Department of Zoology, University of Gujrat, Gujrat 50700, Pakistan
| | - Shazia Shamas
- Department of Zoology, University of Gujrat, Gujrat 50700, Pakistan
| | - Zafar Iqbal
- Department of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
| | - Zaman Ashraf
- Department of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
| | - Qamar Abbas
- Department of Physiology, University of Sindh, Jamshoro, Pakistan
| | - Mubashir Hassan
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore, Pakistan
| | | | - Muhammad Hassham Hassan Bin Asad
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad Campus, Pakistan
- Institute of Fundamental Medicine, Department of Genetics, Kazan Federal University, Russia
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17
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Macrì R, Musolino V, Gliozzi M, Carresi C, Maiuolo J, Nucera S, Scicchitano M, Bosco F, Scarano F, Ruga S, Zito MC, Guarnieri L, Bombardelli E, Mollace V. Ferula L. Plant Extracts and Dose-Dependent Activity of Natural Sesquiterpene Ferutinin: From Antioxidant Potential to Cytotoxic Effects. Molecules 2020; 25:molecules25235768. [PMID: 33297504 PMCID: PMC7731292 DOI: 10.3390/molecules25235768] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/04/2020] [Accepted: 12/06/2020] [Indexed: 02/07/2023] Open
Abstract
The employment studies of natural extracts in the prevention and treatment of several diseases highlighted the role of different species of genus Ferula L., belonging to the Apiaceae family, dicotyledonous plants present in many temperate zones of our planet. Ferula communis L. is the main source of sesquiterpene ferutinin, a bioactive compound studied both in vitro and in vivo, because of different effects, such as phytoestrogenic, antioxidant, anti-inflammatory, but also antiproliferative and cytotoxic activity, performed in a dose-dependent and cell-dependent way. The present review will focus on the molecular mechanisms involved in the different activities of Ferutinin, starting from its antioxidant potential at low doses until its ionophoric property and the subsequent mitochondrial dysfunction induced through administration of high doses, which represent the key point of its anticancer action. Furthermore, we will summarize the data acquired from some experimental studies on different cell types and on several diseases. The results obtained showed an important antioxidant and phytoestrogenic regulation with lack of typical side effects related to estrogenic therapy. The preferential cell death induction for tumor cell lines suggests that ferutinin may have anti-neoplastic properties, and may be used as an antiproliferative and cytotoxic agent in an estrogen dependent and independent manner. Nevertheless, more data are needed to clearly understand the effect of ferutinin in animals before using it as a phytoestrogen or anticancer drug.
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Affiliation(s)
- Roberta Macrì
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
- Correspondence: (R.M.); (V.M.); Tel./Fax: +39-0961-3694301 (R.M. & V.M.)
| | - Vincenzo Musolino
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
- Correspondence: (R.M.); (V.M.); Tel./Fax: +39-0961-3694301 (R.M. & V.M.)
| | - Micaela Gliozzi
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
| | - Cristina Carresi
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
| | - Jessica Maiuolo
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
| | - Saverio Nucera
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
| | - Miriam Scicchitano
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
| | - Francesca Bosco
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
| | - Federica Scarano
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
| | - Stefano Ruga
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
| | - Maria Caterina Zito
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
| | - Lorenza Guarnieri
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
| | - Ezio Bombardelli
- Nutramed S.c.a.r.l., Complesso Ninì Barbieri, Roccelletta di Borgia, 88021 Catanzaro, Italy;
| | - Vincenzo Mollace
- Institute of Research for Food Safety & Health IRC-FSH, University Magna Graecia, 88100 Catanzaro, Italy; (M.G.); (C.C.); (J.M.); (S.N.); (M.S.); (F.B.); (F.S.); (S.R.); (M.C.Z.); (L.G.); (V.M.)
- Nutramed S.c.a.r.l., Complesso Ninì Barbieri, Roccelletta di Borgia, 88021 Catanzaro, Italy;
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18
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Ang KP, Chan PF, Hamid RA. Antiproliferative activity exerted by tricyclohexylphosphanegold(I) n-mercaptobenzoate against MCF-7 and A2780 cell lines: the role of p53 signaling pathways. Biometals 2020; 34:141-160. [PMID: 33196940 DOI: 10.1007/s10534-020-00269-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 11/04/2020] [Indexed: 12/28/2022]
Abstract
Based on the recent studies depicting the potential of heterometallic gold complexes as potent antiproliferative agents, herein we first reported the preliminary mechanistic data on the in-vitro antiproliferative activity of tricyclohexylphosphanegold(I) n-mercaptobenzoate, Cy3PAu(n-MBA) where n = 2 (1), 3 (2) and 4 (3), and MBA = mercaptobenzoic acid, treated using MCF-7 breast cancer and A2780 ovarian cancer cells, respectively. 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay was used to assess the cytotoxicity of both cancer cells treated with 1-3, respectively. The IC50 of 1-3 were applied to the subsequent assays including cell invasion and thioredoxin reductase (TrxR) as well as ubiquitin activities specifically on Lys48 and Lys63-linked polyubiquitin chains via flowcytometric analysis. The mechanistic effect of 1-3 towards both cells were evaluated on human p53 signaling gene expressions via RT2 profiler Polymerase Chain Reductase (PCR) array. 1-3 were found to be highly cytotoxic towards both MCF-7 and A2780 cancer cell lines with the compounds were more sensitive towards the latter cells. 1-3 also suppressed TrxR and cell invasion activities by modulating p53 related genes related with proliferation, invasion and TrxR activities i.e. CCNB1, TP53, CDK4 etc. 1-3 also regulated Lys48 and Lys63-linked polyubiquitination by reactivation of p53, suggesting the ability of this gene in regulating inhibition of cytoskeletal reorganization via epithelial-mesenchymal transition (EMT), required for tumor progression. Taken together, the overall findings denoted that 1-3 exerted potent antiproliferative activity in MCF-7 and A2780 cells via activation of the p53 signaling pathway.
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Affiliation(s)
- Kok Pian Ang
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Pit Foong Chan
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Roslida Abd Hamid
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
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19
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Zhang G, Rodemer W, Sinitsa I, Hu J, Selzer ME. Source of Early Regenerating Axons in Lamprey Spinal Cord Revealed by Wholemount Optical Clearing with BABB. Cells 2020; 9:cells9112427. [PMID: 33172031 PMCID: PMC7694618 DOI: 10.3390/cells9112427] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/04/2020] [Accepted: 11/04/2020] [Indexed: 12/22/2022] Open
Abstract
Many studies of axon regeneration in the lamprey focus on 18 pairs of large identified reticulospinal (RS) neurons, whose regenerative abilities have been individually quantified. Their axons retract during the first 2 weeks after transection (TX), and many grow back to the site of injury by 4 weeks. However, locomotor movements begin before 4 weeks and the lesion is invaded by axons as early as 2 weeks post-TX. The origins of these early regenerating axons are unknown. Their identification could be facilitated by studies in central nervous system (CNS) wholemounts, particularly if spatial resolution and examination by confocal microscopy were not limited by light scattering. We have used benzyl alcohol/benzyl benzoate (BABB) clearing to enhance the resolution of neuronal perikarya and regenerated axons by confocal microscopy in lamprey CNS wholemounts, and to assess axon regeneration by retrograde and anterograde labeling with fluorescent dye applied to a second TX caudal or rostral to the original lesion, respectively. We found that over 50% of the early regenerating axons belonged to small neurons in the brainstem. Some propriospinal neurons located close to the TX also contributed to early regeneration. The number of early regenerating propriospinal neurons decreased with distance from the original lesion. Descending axons from the brainstem were labeled anterogradely by application of tracer to a second TX close to the spinal-medullary junction. This limited contamination of the data by regenerating spinal axons whose cell bodies are located rostral or caudal to the TX and confirmed the regeneration of many small RS axons as early as 2 weeks post-TX. Compared with the behavior of axotomized giant axons, the early regenerating axons were of small caliber and showed little retraction, probably because they resealed rapidly after injury.
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Affiliation(s)
- Guixin Zhang
- Shriners Hospitals Pediatric Research Center (Center for Neural Repair and Rehabilitation), Philadelphia, PA 19140, USA; (G.Z.); (W.R.); (J.H.)
| | - William Rodemer
- Shriners Hospitals Pediatric Research Center (Center for Neural Repair and Rehabilitation), Philadelphia, PA 19140, USA; (G.Z.); (W.R.); (J.H.)
| | - Isabelle Sinitsa
- College of Science and Technology, Temple University, Philadelphia, PA 19122, USA;
| | - Jianli Hu
- Shriners Hospitals Pediatric Research Center (Center for Neural Repair and Rehabilitation), Philadelphia, PA 19140, USA; (G.Z.); (W.R.); (J.H.)
| | - Michael E. Selzer
- Shriners Hospitals Pediatric Research Center (Center for Neural Repair and Rehabilitation), Philadelphia, PA 19140, USA; (G.Z.); (W.R.); (J.H.)
- Department of Neurology, the Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, Philadelphia, PA 19140, USA
- Correspondence:
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20
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Scarpitti BT, Morrison AM, Buyanova M, Schultz ZD. Comparison of 4-Mercaptobenzoic Acid Surface-Enhanced Raman Spectroscopy-Based Methods for pH Determination in Cells. Appl Spectrosc 2020; 74:1423-1432. [PMID: 32731744 PMCID: PMC7747936 DOI: 10.1177/0003702820950768] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Measurements of cellular pH are used to infer information such as stage of cell cycle, presence of cancer and other diseases, as well as delivery or effect of a therapeutic drug. Surface-enhanced Raman spectroscopy (SERS) of nanoparticle-based pH probes have been used to interrogate intracellular pH, with the significant advantage of avoiding photobleaching compared to fluorescent indicators. 4-Mercaptobenzoic acid (MBA) is a commonly used pH-sensitive reporter molecule. Intracellular pH sensing by SERS requires analysis of the observed MBA spectrum and spectral interference can affect the pH determination. Background from common cell containers, imaging too few particles, signal-to-noise ratios, and degradation of reporter molecules are among the factors that may alter appropriate SERS-based pH determination in cells. Here, we have compared common methods of spectral analysis to see how different factors alter the calculated pH in Raman maps of MBA functionalized Au nanostars in SW620 cancer cells. The methods included in our comparison use the relative intensity of the ν(COO-) stretch, chemometric analysis of the ν8a mode, and analyzing the frequency shift of the ν8a mode. These methods show different sensitivity to some of these sources of error in live cell experiments. pH determination based on Raman frequency shift appears to give a more reliable pH determination, though in high signal-to-noise environments, intensity ratios may provide better sensitivity to small changes in pH for cellular imaging.
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21
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Abuelizz HA, Awad HM, Marzouk M, Nasr FA, Bakheit AH, Naglah AM, Al-Shakliah NS, Al-Salahi R. Exploiting the 4-hydrazinobenzoic acid moiety for the development of anticancer agents: Synthesis and biological profile. Bioorg Chem 2020; 102:104098. [PMID: 32702510 DOI: 10.1016/j.bioorg.2020.104098] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/26/2020] [Accepted: 07/10/2020] [Indexed: 12/24/2022]
Abstract
Thirteen 4-hydrazinobenzoic acid derivatives were elaborated and characterized by spectral analyses (NMR and MS). Evaluation of their in vitro cytotoxic activity showed that some of the targets demonstrated potent inhibitory effects against HCT-116 and MCF-7 cancer cells. The IC50 values ranged between 21.3 ± 4.1 and 28.3 ± 5.1 µM, respectively, whereas those of doxorubicin (reference drug) ranged between 22.6 ± 3.9 and 19.7 ± 3.1 µM, respectively. The active targets 6, 7 and 9 exhibited very weak cytotoxicity on normal cells (RPE-1) and showed higher IC50 values against HCT-116 and MCF-7 cells in comparison to doxorubicin. Furthermore, compounds 7, 9 and 10 inhibited the proliferation of MCF-7 by the induction of apoptosis. The bioassay results in the regression plots generated in 3D QSAR models were in agreement and correlated with the anticancer results of the target molecules. The 4-hydazinobenzoic acid derivatives can be used as cornerstones for further structural modifications as future anticancer agents.
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Affiliation(s)
- Hatem A Abuelizz
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Hanem M Awad
- Department of Tanning Materials and Leather Technology, National Research Centre, 33 El-Bohouth St. (Former El-Tahrir St.), Dokki, Cairo 12622, Egypt
| | - Mohamed Marzouk
- Department of Tanning Materials and Leather Technology, National Research Centre, 33 El-Bohouth St. (Former El-Tahrir St.), Dokki, Cairo 12622, Egypt
| | - Fahd A Nasr
- Medicinal Aromatic, and Poisonous Plants Research Center, College of Pharmacy, King Saud University, PO Box 2457, Riyadh, 11451, Saudi Arabia
| | - Ahmed H Bakheit
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia; Department of Chemistry, Faculty of Science and Technology, El-Neelain University, P.O. Box 12702, Khartoum 11121, Sudan
| | - Ahmed M Naglah
- Department of Pharmaceutical Chemistry, Drug Exploration and Development Chair (DEDC), College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; Peptide Chemistry Department, Chemical Industries Research Division, National Research Centre, 33 El-Bohouth St. (Former El-Tahrir St.), Dokki, Cairo 12622, Egypt
| | - Nasser S Al-Shakliah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Rashad Al-Salahi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia.
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22
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Leong SX, Koh LK, Koh CSL, Phan-Quang GC, Lee HK, Ling XY. In Situ Differentiation of Multiplex Noncovalent Interactions Using SERS and Chemometrics. ACS Appl Mater Interfaces 2020; 12:33421-33427. [PMID: 32578974 DOI: 10.1021/acsami.0c08053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Probing changes of noncovalent interactions is crucial to study the binding efficiencies and strengths of (bio)molecular complexes. While surface-enhanced Raman scattering (SERS) offers unique molecular fingerprints to examine such interactions in situ, current platforms are only able to recognize hydrogen bonds because of their reliance on manual spectral identification. Here, we differentiate multiple intermolecular interactions between two interacting species by synergizing plasmonic liquid marble-based SERS platforms, chemometrics, and density functional theory. We demonstrate that characteristic 3-mercaptobenzoic acid (probe) Raman signals have distinct peak shifts upon hydrogen bonding and ionic interactions with tert-butylamine, a model interacting species. Notably, we further quantify the contributions from each noncovalent interaction coexisting in different proportions. As a proof-of-concept, we detect and categorize biologically important nucleotide bases based on molecule-specific interactions. This will potentially be useful to study how subtle changes in biomolecular interactions affect their structural and binding properties.
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Affiliation(s)
- Shi Xuan Leong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Li Keng Koh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Charlynn Sher Lin Koh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Gia Chuong Phan-Quang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Xing Yi Ling
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
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23
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Zarafu I, Matei L, Bleotu C, Ionita P, Tatibouët A, Păun A, Nicolau I, Hanganu A, Limban C, Nuta DC, Nemeș RM, Diaconu CC, Radulescu C. Synthesis, Characterization, and Biologic Activity of New Acyl Hydrazides and 1,3,4-Oxadiazole Derivatives. Molecules 2020; 25:E3308. [PMID: 32708236 PMCID: PMC7396991 DOI: 10.3390/molecules25143308] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/10/2020] [Accepted: 07/21/2020] [Indexed: 02/01/2023] Open
Abstract
Starting from isoniazid and carboxylic acids as precursors, thirteen new hydrazides and 1,3,4-oxadiazoles of 2-(4-substituted-phenoxymethyl)-benzoic acids were synthesized and characterized by appropriate means. Their biological properties were evaluated in terms of apoptosis, cell cycle blocking, and drug metabolism gene expression on HCT-8 and HT-29 cell lines. In vitro antimicrobial tests were performed by the microplate Alamar Blue assay for the anti-mycobacterial activities and an adapted agar disk diffusion technique for other non-tubercular bacterial strains. The best antibacterial activity (anti-Mycobacterium tuberculosis effects) was proved by 9. Compounds 7, 8, and 9 determined blocking of G1 phase. Compound 7 proved to be toxic, inducing apoptosis in 54% of cells after 72 h, an effect that can be predicted by the increased expression of mRNA caspases 3 and 7 after 24 h. The influence of compounds on gene expression of enzymes implicated in drug metabolism indicates that synthesized compounds could be metabolized via other pathways than NAT2, spanning adverse effects of isoniazid. Compound 9 had the best antibacterial activity, being used as a disinfectant agent. Compounds 7, 8, and 9, seemed to have antitumor potential. Further studies on the action mechanism of these compounds on the cell cycle may bring new information regarding their biological activity.
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Affiliation(s)
- Irina Zarafu
- Faculty of Chemistry, University of Bucharest, 050663 Bucharest, Romania; (P.I.); (A.P.); (I.N.)
| | - Lilia Matei
- “Stefan S Nicolau” Institute of Virology, Romanian Academy, 030304 Bucharest, Romania; (L.M.); (C.B.); (C.C.D.)
- Research Institute of the University of Bucharest (ICUB), Life, Environmental and Earth Sciences Division, University of Bucharest, 060023 Bucharest, Romania;
| | - Coralia Bleotu
- “Stefan S Nicolau” Institute of Virology, Romanian Academy, 030304 Bucharest, Romania; (L.M.); (C.B.); (C.C.D.)
- Research Institute of the University of Bucharest (ICUB), Life, Environmental and Earth Sciences Division, University of Bucharest, 060023 Bucharest, Romania;
| | - Petre Ionita
- Faculty of Chemistry, University of Bucharest, 050663 Bucharest, Romania; (P.I.); (A.P.); (I.N.)
| | - Arnaud Tatibouët
- Institute of Organic and Analytical Chemistry ICOA-UMR7311, University of Orleans, 45067 Orleans, France;
| | - Anca Păun
- Faculty of Chemistry, University of Bucharest, 050663 Bucharest, Romania; (P.I.); (A.P.); (I.N.)
| | - Ioana Nicolau
- Faculty of Chemistry, University of Bucharest, 050663 Bucharest, Romania; (P.I.); (A.P.); (I.N.)
| | - Anamaria Hanganu
- Research Institute of the University of Bucharest (ICUB), Life, Environmental and Earth Sciences Division, University of Bucharest, 060023 Bucharest, Romania;
- Institute of Organic Chemistry “C.D. Nenitescu” of the Romanian Academy, 060023 Bucharest, Romania
| | - Carmen Limban
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (C.L.); (D.C.N.)
| | - Diana Camelia Nuta
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (C.L.); (D.C.N.)
| | - Roxana Maria Nemeș
- National Institute of Pneumology Marius Nasta, 050152 Bucharest, Romania;
| | - Carmen Cristina Diaconu
- “Stefan S Nicolau” Institute of Virology, Romanian Academy, 030304 Bucharest, Romania; (L.M.); (C.B.); (C.C.D.)
| | - Cristiana Radulescu
- Faculty of Sciences and Arts, “Valahia” University of Targoviste, 130004 Targoviste, Romania
- Institute of Multidisciplinary Research for Science and Technology, Valahia University of Targoviste, 13004 Targoviste, Romania
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24
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Pantelis KN, Perlepe PS, Grammatikopoulos S, Lampropoulos C, Tang J, Stamatatos TC. 4f-Metal Clusters Exhibiting Slow Relaxation of Magnetization: A {Dy 7} Complex with An Hourglass-like Metal Topology. Molecules 2020; 25:molecules25092191. [PMID: 32392886 PMCID: PMC7249001 DOI: 10.3390/molecules25092191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 04/29/2020] [Accepted: 05/03/2020] [Indexed: 11/18/2022] Open
Abstract
The reaction between Dy(NO3)3∙6H2O and the bulky Schiff base ligand, N-naphthalidene-2-amino-5-chlorobenzoic acid (nacbH2), in the presence of the organic base NEt3 has led to crystallization and structural, spectroscopic and magnetic characterization of a new heptanuclear [Dy7(OH)6(OMe)2(NO3)1.5(nacb)2(nacbH)6(MeOH)(H2O)2](NO3)1.5 (1) compound in ~40% yield. Complex 1 has a unique hourglass-like metal topology, among all previously reported {Dy7} clusters, comprising two distorted {Dy4(μ3-OH)3(μ3-OMe)}8+ cubanes that share a common metal vertex (Dy2). Peripheral ligation about the metal core is provided by the carboxylate groups of four η1:η1:η1:μ single-deprotonated nacbH− and two η1:η1:η2:η1:μ3 fully-deprotonated nacb2− ligands. Complex 1 is the first structurally characterized 4f-metal complex bearing the chelating/bridging ligand nacbH2 at any protonation level. Magnetic susceptibility studies revealed that 1 exhibits slow relaxation of magnetization at a zero external dc field, albeit with a small energy barrier of ~5 K for the magnetization reversal, most likely due to the very fast quantum-tunneling process. The combined results are a promising start to further explore the reactivity of nacbH2 upon all lanthanide ions and the systematic use of this chelate ligand as a route to new 4f-metal cluster compounds with beautiful structures and interesting magnetic dynamics.
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Affiliation(s)
| | - Panagiota S. Perlepe
- Chemistry Department, University of Patras, 265 04 Patras, Greece; (K.N.P.); (P.S.P.); (S.G.)
| | | | - Christos Lampropoulos
- Department of Chemistry, University of North Florida, 1 UNF Dr., Jacksonville, FL 32224, USA;
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
| | - Theocharis C. Stamatatos
- Chemistry Department, University of Patras, 265 04 Patras, Greece; (K.N.P.); (P.S.P.); (S.G.)
- Correspondence: ; Tel.: +30-2610-996008
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25
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Jaros SW, Król J, Bażanów B, Poradowski D, Chrószcz A, Nesterov DS, Kirillov AM, Smoleński P. Antiviral, Antibacterial, Antifungal, and Cytotoxic Silver(I) BioMOF Assembled from 1,3,5-Triaza-7-Phoshaadamantane and Pyromellitic Acid. Molecules 2020; 25:E2119. [PMID: 32369972 PMCID: PMC7249189 DOI: 10.3390/molecules25092119] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 04/28/2020] [Accepted: 04/29/2020] [Indexed: 12/12/2022] Open
Abstract
The present study reports the synthesis, characterization, and crystal structure of a novel bioactive metal-organic framework, [Ag4(µ-PTA)2(µ3-PTA)2(µ4-pma)(H2O)2]n·6nH2O (bioMOF 1), which was assembled from silver(I) oxide, 1,3,5-triaza-7-phosphaadamantane (PTA), and pyromellitic acid (H4pma). This product was isolated as a stable microcrystalline solid and characterized by standard methods, including elemental analysis, 1H and 31P{1H} NMR and FTIR spectroscopy, and single crystal X-ray diffraction. The crystal structure of 1 disclosed a very complex ribbon-pillared 3D metal-organic framework driven by three different types of bridging ligands (µ-PTA, µ3-PTA, and µ4-pma4-). Various bioactivity characteristics of bioMOF 1 were investigated, revealing that this compound acts as a potent antimicrobial against pathogenic strains of standard Gram-negative (Escherichia coli, Pseudomonas aeruginosa) and Gram-positive (Staphylococcus aureus) bacteria, as well as a yeast (Candida albicans). Further, 1 showed significant antiviral activity against human adenovirus 36 (HAdV-36). Finally, bioMOF 1 revealed high cytotoxicity toward an abnormal epithelioid cervix carcinoma (HeLa) cell line with low toxicity toward a normal human dermal fibroblast (NHDF) cell line. This study not only broadens the family of PTA-based coordination polymers but also highlights their promising multifaceted bioactivity.
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Affiliation(s)
- Sabina W. Jaros
- Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wrocław, Poland;
| | - Jarosław Król
- Department of Veterinary Microbiology, Wrocław University of Environmental and Life Sciences, Norwida 31, 50-375 Wrocław, Poland; (J.K.); (B.B.)
| | - Barbara Bażanów
- Department of Veterinary Microbiology, Wrocław University of Environmental and Life Sciences, Norwida 31, 50-375 Wrocław, Poland; (J.K.); (B.B.)
| | - Dominik Poradowski
- Department of Animal Physiology and Biostructure, Wrocław University of Environmental and Life Sciences, Kożuchowska 1, 51-631 Wrocław, Poland; (D.P.); (A.C.)
| | - Aleksander Chrószcz
- Department of Animal Physiology and Biostructure, Wrocław University of Environmental and Life Sciences, Kożuchowska 1, 51-631 Wrocław, Poland; (D.P.); (A.C.)
| | - Dmytro S. Nesterov
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049–001 Lisbon, Portugal;
- Research Institute of Chemistry, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya st., 117198 Moscow, Russia
| | - Alexander M. Kirillov
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049–001 Lisbon, Portugal;
- Research Institute of Chemistry, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya st., 117198 Moscow, Russia
| | - Piotr Smoleński
- Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wrocław, Poland;
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Adeoye O, Bártolo I, Conceição J, da Silva AB, Duarte N, Francisco AP, Taveira N, Cabral-Marques H. Pyromellitic dianhydride crosslinked soluble cyclodextrin polymers: Synthesis, lopinavir release from sub-micron sized particles and anti-HIV-1 activity. Int J Pharm 2020; 583:119356. [PMID: 32325245 DOI: 10.1016/j.ijpharm.2020.119356] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 03/30/2020] [Accepted: 04/18/2020] [Indexed: 12/24/2022]
Abstract
We report the synthesis of water soluble cyclodextrin (CD) polymers prepared by crosslinking pyromellitic dianhydride (PMDA) with two CD derivatives (methyl-β-CD - MβCD and (2-hydroxy)propyl-β-CD - HPβCD) and their evaluation as functional sub-micron sized carriers in the development of antiretroviral drug delivery systems. Using the protease inhibitor lopinavir (LPV) as model drug, LPV loaded CD polymers (pHPβCD and pMβCD) were prepared and fully characterized. The physicochemical characterization and in vitro drug release confirmed the successful synthesis of pHPβCD and pMβCD, the formation of sub-micron sized particles and a 12-14 fold increase in LPV solubility. Cytotoxicity assays indicated that both pHPβCD and pMβCD were able to improve the safety profile of LPV while the viral infectivity assay revealed a concentration independent anti-HIV-1 effect for both pHPβCD and pMβCD with a maximum percentage inhibition (MPI) of 79 and 91% respectively. After LPV loading, the antiviral profile of pHPβCD was reversed to the sigmoidal dose-response profile of LPV, while pMβCD maintained its dose-independent profile followed by a LPV mediated increase in viral inhibition. Overall, both pHPβCD and pMβCD demonstrated anti-HIV-1 activity, while drug loaded pMβCD indicated its potential as functional sub-micron sized drug delivery polymers for achieving synergistic anti-HIV activity.
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Affiliation(s)
- Oluwatomide Adeoye
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Inês Bártolo
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Jaime Conceição
- UCIBIO/REQUIMTE, MedTech - Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Oporto, Portugal
| | - Andreia Bento da Silva
- Faculdade de Farmácia da Universidade de Lisboa (FFULisboa), Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Noélia Duarte
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Ana Paula Francisco
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Nuno Taveira
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal; Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz, Caparica, Portugal
| | - Helena Cabral-Marques
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal.
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Abdullah Alshabanah L, Al-Mutabagani LA, Ahmed HA, Hagar M. Induced Wide Nematic Phase by Seven-Ring Supramolecular H-Bonded Systems: Experimental and Computational Evaluation. Molecules 2020; 25:E1694. [PMID: 32272753 PMCID: PMC7180779 DOI: 10.3390/molecules25071694] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 03/31/2020] [Accepted: 04/03/2020] [Indexed: 11/25/2022] Open
Abstract
New seven-ring systems of dipyridine derivative liquid crystalline 2:1 supramolecular H-bonded complexes were formed between 4-n-alkoxyphenylazo benzoic acids and 4-(2-(pyridin-4-yl)diazenyl)phenyl nicotinate. Mesomorphic behaviors of the prepared complexes were investigated using a combination of differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). Fermi bands attributed to the presence of intermolecular H-bond interactions were confirmed by FT-IR spectroscopy. All prepared complexes possessed an enantiotropic nematic phase with a broad temperature nematogenic range. Phases were confirmed by miscibility with a standard nematic (N) compound. A comparison was constructed to investigate the influence of the incorporation of the azophenyl moiety on the mesomeric behavior of corresponding five-membered complexes. It was found that the present complexes observed induced a wide nematic phase with relatively higher temperature ranges than the five aromatic systems. Density functional theory (DFT ) suggested the nonlinear geometry of the formed complex. The results of the DFT explained the nematic mesophase formation. Moreover, the π-π stacking of the aromatic moiety in the phenylazo acid plays an effective role in the mesomorphic thermal stability. The energy difference between the frontier molecular orbitals, HOMO (highest occupied) and LUMO (lowest occupied), and the molecular electrostatic potential (MEP) of the prepared complexes were estimated by DFT calculations. The results were used to illustrate the observed nematic phase for all H-bonded supramolecular complexes. Finally, photophysical studies were discussed which were carried out by UV spectroscopy connected to a hot stage.
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Affiliation(s)
- Latifah Abdullah Alshabanah
- Chemistry Department, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia; (L.A.A.); (L.A.A.-M.)
| | - Laila A. Al-Mutabagani
- Chemistry Department, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia; (L.A.A.); (L.A.A.-M.)
| | - Hoda A. Ahmed
- Department of Chemistry, Faculty of Science, Cairo University, Cairo 12613, Egypt
- Chemistry Department, College of Sciences, Yanbu, Taibah University, Yanbu 30799, Saudi Arabia
| | - Mohamed Hagar
- Chemistry Department, College of Sciences, Yanbu, Taibah University, Yanbu 30799, Saudi Arabia
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21321, Egypt
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Planke T, Cirnski K, Herrmann J, Müller R, Kirschning A. Synthetic and Biological Studies on New Urea and Triazole Containing Cystobactamid Derivatives. Chemistry 2020; 26:4289-4296. [PMID: 31834653 PMCID: PMC7186842 DOI: 10.1002/chem.201904073] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Indexed: 12/02/2022]
Abstract
Cystobactamids belong to the group of arene-based oligoamides that effectively inhibit bacterial type IIa topoisomerases. Cystobactamid 861-2 is the most active member of these antibiotics. Most amide bonds present in the cystobactamids link benzoic acids with anilines and it was found that some of these amide bonds undergo chemical and enzymatic hydrolysis, especially the one linking ring C with ring D. This work reports on the chemical synthesis and biological evaluation of thirteen new cystobactamids that still contain the methoxyaspartate hinge. However, we exchanged selected amide bonds either by the urea or the triazole groups and modified ring A in the latter case. While hydrolytic stability could be improved with these structural substitutes, the high antibacterial potency of cystobactamid 861-2 could only be preserved in selected cases. This includes derivatives, in which the urea group is positioned between rings A and B and where the triazole is found between rings C and D.
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Affiliation(s)
- Therese Planke
- Institut für Organische Chemie und Biomolekulares Wirkstoffzentrum (BMWZ), Leibniz Universität Hannover, Schneiderberg 1B, 30167, Hannover, Germany
| | - Katarina Cirnski
- Abteilung Mikrobielle Naturstoffe, Helmholtz Institut für Pharmazeutische Forschung Saarland, Helmholtz Zentrum für Infektionsforschung und Universität des Saarlandes, Campus E8.1, 66123, Saarbrücken, Germany
- Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Inhoffenstraße 7, 38124, Braunschweig, Germany
| | - Jennifer Herrmann
- Abteilung Mikrobielle Naturstoffe, Helmholtz Institut für Pharmazeutische Forschung Saarland, Helmholtz Zentrum für Infektionsforschung und Universität des Saarlandes, Campus E8.1, 66123, Saarbrücken, Germany
- Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Inhoffenstraße 7, 38124, Braunschweig, Germany
| | - Rolf Müller
- Abteilung Mikrobielle Naturstoffe, Helmholtz Institut für Pharmazeutische Forschung Saarland, Helmholtz Zentrum für Infektionsforschung und Universität des Saarlandes, Campus E8.1, 66123, Saarbrücken, Germany
- Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Inhoffenstraße 7, 38124, Braunschweig, Germany
| | - Andreas Kirschning
- Institut für Organische Chemie und Biomolekulares Wirkstoffzentrum (BMWZ), Leibniz Universität Hannover, Schneiderberg 1B, 30167, Hannover, Germany
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Ding T, Zhou Y, Qin JJ, Yang LJ, Zhang WD, Shen YH. Chemical constituents from wetland soil fungus Penicillium oxalicum GY1. Fitoterapia 2020; 142:104530. [PMID: 32114035 DOI: 10.1016/j.fitote.2020.104530] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/22/2020] [Accepted: 02/23/2020] [Indexed: 11/15/2022]
Abstract
A new azo compound, penoxalin (1), a new isochroman carboxylic acid, penisochroman B (3), two new natural products, penisochroman A (2) and 2,6-dihydroxy-4-[(2R)-2-hydroxyheptyl] benzoic acid (4), together with four known compounds (5-8) were isolated from wetland soil fungus Penicillium oxalicum GY1. All structures were elucidated by extensive NMR spectroscopic evidences together with mass spectrometry. The absolute configuration of penoxalin (1) was determined by calculated ECD spectrum, while the absolute configuration of new natural product penisochroman A (2) was established for the first time by single crystal X-ray diffraction. In addition, all compounds were evaluated for their cytotoxic activity in vitro. 2, 6-Dihydroxy-4-[(2R)-2-hydroxyheptyl] benzoic acid (4) displayed significant cytotoxicity against human esophageal carcinoma cells OE19 with an IC50 value of 5.50 μM.
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Affiliation(s)
- Ting Ding
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 201203, China
| | - Yuan Zhou
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Jiang-Jiang Qin
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China; Institute of Cancer and Basic Medicine, Chinese Academy of Sciences, Cancer Hospital of the University of Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou, China
| | - Luo-Jie Yang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Wei-Dong Zhang
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 201203, China; School of Pharmacy, The Second Military Medical University, Shanghai 200433, China.
| | - Yun-Heng Shen
- School of Pharmacy, The Second Military Medical University, Shanghai 200433, China.
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Xi Y, Yang X, Zhang H, Liu H, Watson P, Yang F. Binding interactions of halo-benzoic acids, halo-benzenesulfonic acids and halo-phenylboronic acids with human transthyretin. Chemosphere 2020; 242:125135. [PMID: 31669991 DOI: 10.1016/j.chemosphere.2019.125135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/15/2019] [Accepted: 10/16/2019] [Indexed: 06/10/2023]
Abstract
The anionic form-dependent binding interaction of halo-phenolic substances with human transthyretin (hTTR) has been observed previously. This indicates that ionizable compounds should be the primary focus in screening potential hTTR disruptors. Here, the potential binding potency of halo-benzoic acids, halo-benzenesulfonic acids/sulfates and halo-phenylboronic acids with hTTR was determined and analyzed by competitive fluorescence displacement assay integrated with computational methods. The laboratorial results indicated that the three test groups of model compounds exhibited a distinct binding affinity to hTTR. All the tested halo-phenylboronic acids, some of the tested halo-benzoic acids and halo-benzenesulfonic acids/sulfates were shown to be inactive with hTTR. Other halo-benzoic acids and halo-benzenesulfonic acids/sulfates were moderate and/or weak hTTR binders. The binding affinity of halo-benzoic acids and halo-benzenesulfonic acids/sulfates with hTTR was similar. The low distribution ability of the model compounds from water to hTTR may be the reason why they exhibited the binding potency observed with hTTR. By introducing other highly hydrophobic compounds, we observed that the binding affinity between compounds and hTTR increased with increasing molecular hydrophobicity. Those results indicated that the highly hydrophobic halo-benzoic acids and halo-benzenesulfonic acids/sulfates may be high-priority hTTR disruptors. Finally, a binary classification model was constructed employing three predictive variables. The sensitivity (Sn), specificity (Sp), predictive accuracy (Q) values of the training set and validation set were >0.83, indicating that the model had good classification performance. Thus, the binary classification model developed here could be used to distinguish whether a given ionizable compound is a potential hTTR binder or not.
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Affiliation(s)
- Yue Xi
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Xianhai Yang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - Hongyu Zhang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Huihui Liu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - Peter Watson
- Department of Civil and Environmental Engineering, University of Connecticut, Storrs, 06268, CT, United States
| | - Feifei Yang
- Department of Civil and Environmental Engineering, University of Connecticut, Storrs, 06268, CT, United States
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31
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Jiang J, Li J, Liu C, Liu R, Liang X, Zhou Y, Pan L, Chen H, Ma Z. Study on the substitution effects of zinc benzoate terpyridine complexes on photoluminescence, antiproliferative potential and DNA binding properties. J Biol Inorg Chem 2020; 25:311-324. [PMID: 32112291 DOI: 10.1007/s00775-020-01763-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 02/08/2020] [Indexed: 01/26/2023]
Abstract
Six zinc(II) complexes, [Zn(OCOPh)2LR] (R = 1, 2, 3, 4, 5, 6) were synthesized by the reaction of zinc benzoate and six para-substituted 4-phenyl-terpyridine complexes and their structures were confirmed by elemental analysis, FT-IR, 1H NMR and X-ray single crystal diffraction analysis. Their photoluminescent properties in solid and in solutions of DMSO were studied. Three human cancer cell lines were used for antiproliferative potential: human lung cancer cell line (A549), human esophageal cancer cell line (Eca-109) and human breast cancer cell line (MCF-7). The results have shown that these zinc complexes have good inhibitory effects on cancer cells, which are better than that of the commonly used clinical drug cisplatin. The ability of the complexes to binding to CT-DNA was studied by UV spectroscopy and fluorescence titration, while the interaction between the complexes and CT-DNA, AT6, GC6 short-chain DNA sequences and G-quadruplex were analyzed by circular dichroism (CD). It is found that these complexes can bind to DNA, and the binding mode is mainly intercalator. The docking of the complexes with the DNA fragment was simulated using molecular docking software. All the results clearly display that the substituents at these ligands of the complexes have the substitution effects on the properties of photoluminescence, antiproliferative potential and DNA binding study.
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Affiliation(s)
- Jinzhang Jiang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
| | - Jiahe Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
| | - Chengzhang Liu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
| | - Rongping Liu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
| | - Xing Liang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
| | - Yanling Zhou
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China.
| | - Lixia Pan
- National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Nanning, 530004, PR China.
| | - Hailan Chen
- School of Animal Science and Technology, Guangxi University, Nanning, 530004, PR China.
| | - Zhen Ma
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China.
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Guo L, Lin J, Niu S, Liu S, Liu L. Pestalotiones A-D: Four New Secondary Metabolites from the Plant Endophytic Fungus Pestalotiopsis Theae. Molecules 2020; 25:molecules25030470. [PMID: 31979166 PMCID: PMC7037426 DOI: 10.3390/molecules25030470] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 01/19/2020] [Accepted: 01/20/2020] [Indexed: 01/05/2023] Open
Abstract
Two new xanthone derivatives, pestalotiones A (1) and B (2), one new diphenyl ketone riboside, pestalotione C (7), and one new diphenyl ether, pestalotione D (8), along with five known compounds isosulochrin dehydrate (3), 3,8-dihydroxy-6-methyl-9-oxo-9H-xanthene-1-carboxylate (4), isosulochrin (5), chloroisosulochrin (6), and pestalotether D (9), were isolated from the crude extract of the plant endophytic fungus Pestalotiopsis theae (N635). The structures of the new compounds were unambiguously deduced by HRESIMS and 1D/2D-NMR spectroscopic data. Compound 6 showed modest cytotoxicity against the HeLa cell line with an IC50 value of 35.2 μM. Compound 9 also showed cytotoxic to the HeLa and MCF-7 cell lines, with IC50 values of 60.8 and 22.6 μM, respectively. Additionally, compounds 1 and 2 exhibited antioxidant activity in scavenging DPPH radical with IC50 values of 54.2 and 59.2 μg/mL, respectively.
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Affiliation(s)
- Longfang Guo
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (L.G.); (S.L.)
- University of Chinese Academy of Sciences, Beijing 100039, China
| | - Jie Lin
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry, Jiangsu Second Normal University, Nanjing 210003, China;
| | - Shubin Niu
- School of Biological Medicine, Beijing City University, Beijing 100083, China;
| | - Shuchun Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (L.G.); (S.L.)
| | - Ling Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (L.G.); (S.L.)
- Correspondence: ; Tel.: 86-10-648-06153
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Li P, He H, Zhang Y, Yang R, Xu L, Chen Z, Huang Y, Bao L, Xiao G. Glycosyl ortho-(1-phenylvinyl)benzoates versatile glycosyl donors for highly efficient synthesis of both O-glycosides and nucleosides. Nat Commun 2020; 11:405. [PMID: 31964883 PMCID: PMC6972911 DOI: 10.1038/s41467-020-14295-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 12/19/2019] [Indexed: 12/11/2022] Open
Abstract
Both of O-glycosides and nucleosides are important biomolecules with crucial rules in numerous biological processes. Chemical synthesis is an efficient and scalable method to produce well-defined and pure carbohydrate-containing molecules for deciphering their functions and developing therapeutic agents. However, the development of glycosylation methods for efficient synthesis of both O-glycosides and nucleosides is one of the long-standing challenges in chemistry. Here, we report a highly efficient and versatile glycosylation method for efficient synthesis of both O-glycosides and nucleosides, which uses glycosyl ortho-(1-phenylvinyl)benzoates as donors. This glycosylation protocol enjoys the various features, including readily prepared and stable donors, cheap and readily available promoters, mild reaction conditions, good to excellent yields, and broad substrate scopes. In particular, the applications of the current glycosylation protocol are demonstrated by one-pot synthesis of several bioactive oligosaccharides and highly efficient synthesis of nucleosides drugs capecitabine, galocitabine and doxifluridine.
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Affiliation(s)
- Penghua Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Haiqing He
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Yunqin Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Rui Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Lili Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Zixi Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Yingying Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Limei Bao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Guozhi Xiao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China.
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Mostafiz MM, Hassan E, Shim JK, Lee KY. Insecticidal efficacy of three benzoate derivatives against Aphis gossypii and its predator Chrysoperla carnea. Ecotoxicol Environ Saf 2019; 184:109653. [PMID: 31526922 DOI: 10.1016/j.ecoenv.2019.109653] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/02/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
Plant-derived benzoates are known to have insecticidal and repellent activities, however, these effects have been evaluated thoroughly in only a few groups of insects. In this study, the insecticidal activities of three commercially available benzoates, methyl benzoate (MB), ethyl benzoate (EB), and vinyl benzoate (VB), were assessed against the cotton aphid, Aphis gossypii Glover, and its lacewing predator, Chrysoperla carnea Stephens. MB showed the highest contact toxicity against nymphs and adults of A. gossypii, as compared to those of EB and VB. Treatments with 1% MB, EB, and VB were 100.0%, 93.0% and 60.0% effective, respectively, against third-instar nymphs and 100.0%, 69.0%, and 39.0% effective, respectively, against adults of A. gossypii, as evaluated 24 h after application. A mixture of MB + EB showed higher efficacy than other benzoate combinations against A. gossypii. The efficacy of MB, EB, and VB against A. gossypii on cucumber plants under greenhouse conditions was 93.7%, 68.5%, and 56.6%, respectively. In addition, treatments with 1% MB, EB, and VB were 20.0%, 24.0%, and 12.0% effective, respectively, against first-instar larvae and 6.7%, 13.3%, and 6.7% effective, respectively, against adults of C. carnea at 24 h after treatment. Our results showed that the tested benzoates were less toxic to the predator C. carnea than to the pest A. gossypii. In addition, the aphid population was significantly lower in a treatment combining predation by C. carnea followed by use of 1% MB, compared with treatments of either 1% MB or predators alone. This study suggests that plant-derived benzoates are potential biopesticides for aphid control and are compatible with natural enemies in integrated pest management.
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Affiliation(s)
- Md Munir Mostafiz
- Division of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Errol Hassan
- School of Agriculture and Food Sciences, The University of Queensland Gatton, Queensland, 4343, Australia
| | - Jae-Kyoung Shim
- Division of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea; Institute of Plant Medicine, Kyungpook National University, Daegu, Republic of Korea; Institute of Agricultural Science and Technology, Kyungpook National University, Daegu, Republic of Korea
| | - Kyeong-Yeoll Lee
- Division of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea; Institute of Plant Medicine, Kyungpook National University, Daegu, Republic of Korea; Sustainable Agriculture Research Center, Kyungpook National University, Gunwi, Republic of Korea.
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Wei Q, Lin J, Liu F, Wen C, Li N, Huang G, Luo Z. Synthesis of MBA-Encoded Silver/Silica Core-Shell Nanoparticles as Novel SERS Tags for Biosensing Gibberellin A 3 Based on Au@Fe 3O 4 as Substrate. Sensors (Basel) 2019; 19:E5152. [PMID: 31775290 PMCID: PMC6928791 DOI: 10.3390/s19235152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/13/2019] [Accepted: 11/23/2019] [Indexed: 12/25/2022]
Abstract
A surface-enhanced Raman scattering (SERS) tag is proposed for high-sensitivity detection of gibberellin A3 (GA3). Silver nanoparticles (AgNPs) were synthesized using citrate reduction. 4-Mercaptobenzoic acid (MBA) was used for the Raman-labeled molecules, which were coupled to the surface of the AgNPs using sulfydryls. MBA was coated with silica using the Stöber method to prevent leakage. GA3 antibodies were attached via the active functional groups N-Hydroxysuccinimide (NHS) and N-Ethyl-N'-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC) to construct a novel immuno-AgNPs@SiO2 SERS tags. The captured SERS substrates were fabricated through Fe3O4 nanoparticles and gold nanoparticles (AuNPs) using chemical methods. These nanoparticles were characterized using ultraviolet-visible spectroscopy (UV-Vis), dynamic light scattering, Raman spectroscopy, transmission electron microscope (TEM), and X-ray diffraction (XRD). This immuno-AgNPs@SiO2 SERS tags has a strong SERS signal based on characterizations via Raman spectroscopy. Based on antigen-antibody reaction, the immuno-Au@Fe3O4 nanoparticles can capture the GA3 and AgNPs@SiO2 SERS tags. Due to the increasing number of captured nanoprobes, the SERS signal from MBA was greatly enhanced, which favored the sensitive detection of GA3. The linear equation for the SERS signal was y = -13635x + 202211 (R2 = 0.9867), and the limit of detection (LOD) was 10-10 M. The proposed SERS tags are also applicable for the detection of other food risk factors.
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Affiliation(s)
- Qingmin Wei
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Colleges and Universities Key Laboratory for Efficient Use of Agricultural Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China; (Q.W.); (J.L.); (F.L.); (N.L.)
| | - Jianjuan Lin
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Colleges and Universities Key Laboratory for Efficient Use of Agricultural Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China; (Q.W.); (J.L.); (F.L.); (N.L.)
| | - Fa Liu
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Colleges and Universities Key Laboratory for Efficient Use of Agricultural Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China; (Q.W.); (J.L.); (F.L.); (N.L.)
| | - Changchun Wen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, China;
| | - Na Li
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Colleges and Universities Key Laboratory for Efficient Use of Agricultural Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China; (Q.W.); (J.L.); (F.L.); (N.L.)
| | - Guobao Huang
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Colleges and Universities Key Laboratory for Efficient Use of Agricultural Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China; (Q.W.); (J.L.); (F.L.); (N.L.)
| | - Zhihui Luo
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Colleges and Universities Key Laboratory for Efficient Use of Agricultural Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China; (Q.W.); (J.L.); (F.L.); (N.L.)
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Ianni F, Saluti G, Galarini R, Fiorito S, Sardella R, Natalini B. Enantioselective high-performance liquid chromatography analysis of oxygenated polyunsaturated fatty acids. Free Radic Biol Med 2019; 144:35-54. [PMID: 31055130 DOI: 10.1016/j.freeradbiomed.2019.04.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/11/2019] [Accepted: 04/29/2019] [Indexed: 11/16/2022]
Abstract
Oxygenated polyunsaturated fatty acids (PUFAs)play an outstanding role in the physiological and pathological regulation of several biological processes. These oxygenated metabolites can be produced both enzimatically, yielding almost pure enantiomers, and non-enzymatically. The free radical-mediated non-enzymatic oxidation commonly produces racemic mixtures which are used as biomarkers of oxidative stress and tissue damage. The biological activity of oxygenated PUFAs is often associated with only one enantiomer, making it necessary of availing of lipidomics platforms allowing to disclose the role of single enantiomers in health and disease. Polysaccharide-based chiral stationary phases (CSPs) play a dominating part in this setting. As for the cellulose backbone, 4-methylbenzoate derivatives exhibit very high chiral recognition ability towards this class of compounds. Concerning the phenylcarbamate derivatives of cellulose and amylose, the tris(3,5-dimethylphenylcarbamate) variants show the best enantioresolving ability for a variety of oxygenated PUFAs. Moreover, also the amylose tris(5-chloro-2-methylphenylcarbamate)-based selector produces relevant chromatographic performances. The extreme versatility of those CSPs mostly depends on their compatibility with the most relevant elution modes: normal- and reversed-phase, as well as polar organic/ionic-mode. In this review article, a selection of enantioseparation studies of different oxygenated PUFAs is reported, with both tris(benzoates) and tris(phenylcarbamates) of cellulose and amylose.
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Affiliation(s)
- Federica Ianni
- University of Perugia, Department of Pharmaceutical Sciences, Via Fabretti 48, 06123 Perugia, Italy
| | - Giorgio Saluti
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati", Via G. Salvemini 1, 06126 Perugia, Italy
| | - Roberta Galarini
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati", Via G. Salvemini 1, 06126 Perugia, Italy
| | - Serena Fiorito
- University "G. d'Annunzio" of Chieti-Pescara, Department of Pharmacy, Via dei Vestini 31, 66100 Chieti Scalo, Italy
| | - Roccaldo Sardella
- University of Perugia, Department of Pharmaceutical Sciences, Via Fabretti 48, 06123 Perugia, Italy.
| | - Benedetto Natalini
- University of Perugia, Department of Pharmaceutical Sciences, Via Fabretti 48, 06123 Perugia, Italy
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Vargas-Pérez M, González FJE, Frenich AG. Evaluation of the behaviour of propoxycarbazone herbicide in soils and water under different conditions. Post-targeted study. Ecotoxicol Environ Saf 2019; 183:109506. [PMID: 31386940 DOI: 10.1016/j.ecoenv.2019.109506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/26/2019] [Accepted: 07/30/2019] [Indexed: 06/10/2023]
Abstract
The aim of this study is to understand the levels and behaviour of the herbicide propoxycarbazone in environmental compartments, which are poorly characterized considering degradation products that might reach either surface water as groundwater or soil samples. To this end, an analytical method, based on ultra-high performance liquid chromatography (UHPLC) coupled with Orbitrap mass spectrometry (MS), has been developed to determine the parent compound and its transformation products in soils and water. In addition, a set of laboratory trials has been designed to address the dissipation process of propoxycarbazone formulation in both environmental substrates. The study revealed that the dissipation in water followed a first order kinetics and a non-linear "First Order Multi Compartment" model (FOMC) to soil. Relevant advances have been also achieved in terms of the analytical methodology, as far as the UHPLC-Orbitrap-MS technique allows the development of a retrospective screening of pesticide transformation products in water and soils. For this purpose, an accurate-mass database has been built and used for the post-run screening analysis with 9 transformation products. Photodegradation presumably plays an important role in the dissipation of propoxycarbazone. The results of UHPLC-Orbitrap-MS revealed that four transformation products were formed during the degradation process of the herbicide.
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Affiliation(s)
- Marta Vargas-Pérez
- Research Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics, Center for Research in Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL),University of Almeria, Agrifood Campus of International Excellence, CeiA3, E-04120, Almeria, Spain
| | - Francisco Javier Egea González
- Research Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics, Center for Research in Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL),University of Almeria, Agrifood Campus of International Excellence, CeiA3, E-04120, Almeria, Spain
| | - Antonia Garrido Frenich
- Research Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics, Center for Research in Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL),University of Almeria, Agrifood Campus of International Excellence, CeiA3, E-04120, Almeria, Spain.
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Shetnev A, Shlenev R, Efimova J, Ivanovskii S, Tarasov A, Petzer A, Petzer JP. 1,3,4-Oxadiazol-2-ylbenzenesulfonamides as privileged structures for the inhibition of monoamine oxidase B. Bioorg Med Chem Lett 2019; 29:126677. [PMID: 31537422 DOI: 10.1016/j.bmcl.2019.126677] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/05/2019] [Accepted: 09/08/2019] [Indexed: 12/31/2022]
Abstract
The present study investigates the monoamine oxidase (MAO) inhibition properties of a series of ten 5-aryl-1,3,4-oxadiazol-2-ylbenzenesulfonamides. The target compounds were synthesized by dehydration of the corresponding N,N'-diacylhydrazines with phosphorus oxychloride to yield the 1,3,4-oxadiazole cycle with concomitant transformation of the sulfonamide to the sulfonyl chloride group. Treatment with aqueous ammonia in acetonitrile regenerated the target sulfonamides. The results of the enzymology document that these compounds are potent and specific MAO-B inhibitors with the most potent compound exhibiting an IC50 value of 0.0027 µM. An analysis of the structure-activity relationships shows that the 4-benzenesulfonamides are significantly more potent MAO-B inhibitors than the corresponding 3-benzenesulfonamides, and that the corresponding N,N'-diacylhydrazine synthetic precursors are weak MAO inhibitors. Although MAO inhibition by oxadiazole compounds are known, this is the first report of nanomolar MAO inhibition potencies recorded for sulfonamide derivatives. MAO-B specific inhibitors such as those discovered here may be of interest in the treatment of neurodegenerative disorders such as Parkinson's disease.
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Affiliation(s)
- Anton Shetnev
- Pharmaceutical Technology Transfer Center, Ushinsky Yaroslavl State Pedagogical University, 108 Respublikanskaya St., Yaroslavl 150000, Russian Federation
| | - Roman Shlenev
- Yaroslavl State Technical University, Yaroslavl 150023, Russian Federation
| | - Julia Efimova
- Pharmaceutical Technology Transfer Center, Ushinsky Yaroslavl State Pedagogical University, 108 Respublikanskaya St., Yaroslavl 150000, Russian Federation
| | - Sergey Ivanovskii
- Pharmaceutical Technology Transfer Center, Ushinsky Yaroslavl State Pedagogical University, 108 Respublikanskaya St., Yaroslavl 150000, Russian Federation
| | - Alexey Tarasov
- Yaroslavl State Technical University, Yaroslavl 150023, Russian Federation
| | - Anél Petzer
- Pharmaceutical Chemistry and Centre of Excellence for Pharmaceutical Sciences, North-West University, Potchefstroom 2520, South Africa
| | - Jacobus P Petzer
- Pharmaceutical Chemistry and Centre of Excellence for Pharmaceutical Sciences, North-West University, Potchefstroom 2520, South Africa.
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Chitneni SK, Koumarianou E, Vaidyanathan G, Zalutsky MR. Observations on the Effects of Residualization and Dehalogenation on the Utility of N-Succinimidyl Ester Acylation Agents for Radioiodination of the Internalizing Antibody Trastuzumab. Molecules 2019; 24:molecules24213907. [PMID: 31671554 PMCID: PMC6864793 DOI: 10.3390/molecules24213907] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 10/24/2019] [Accepted: 10/29/2019] [Indexed: 11/16/2022] Open
Abstract
Trastuzumab is an antibody used for the treatment of human epidermal growth factor receptor 2 (HER2)-overexpressing breast cancers. Since trastuzumab is an internalizing antibody, two factors could play an important role in achieving high uptake and prolonged retention of radioactivity in HER2-positive tumors after radioiodination-residualizing capacity after receptor-mediated internalization and susceptibility to dehalogenation. To evaluate the contribution of these two factors, trastuzumab was radiolabeled using the residualizing reagent N-succinimidyl 4-guanidinomethyl-3-[*I]iodobenzoate ([*I]SGMIB) and the nonresidualizing reagent N-succinimidyl-3-[*I]iodobenzoate ([*I]SIB), both of which are highly dehalogenation-resistant. Paired-label uptake and intracellular retention of [125I]SGMIB-trastuzumab and [131I]SIB-trastuzumab was compared on HER2-expressing BT474 human breast carcinoma cells. Tumor uptake and normal tissue distribution characteristics for the two labeled conjugates were assessed in mice bearing BT474M1 xenografts. The internalization and intracellular retention of initially-bound radioactivity in BT474 cells was similar for the two labeled conjugates up to 4 h, but were significantly higher for [125I]SGMIB-trastuzumab at 6 and 24 h. Similarly, [*I]SGMIB labeling resulted in significantly higher uptake and retention of radioactivity in BT474M1 xenografts at all studied time points. Moreover, tumor-to-tissue ratios for [125I]SGMIB-trastuzumab were consistently higher than those for [131I]SIB-trastuzumab starting at 12 h postinjection. Thus, optimal targeting of HER2-positive breast cancers with a radioiodinated trastuzumab conjugate requires an acylation agent that imparts residualizing capacity in addition to high stability towards dehalogenation in vivo.
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Affiliation(s)
- Satish K Chitneni
- Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA.
| | - Eftychia Koumarianou
- Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA.
- ABX-CRO Advanced Pharmaceutical Services, D-01307 Dresden, Germany.
| | | | - Michael R Zalutsky
- Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA.
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Yang L, Xu L, Wu X, Fang H, Zhong S, Wang Z, Bu J, Yuan X. Atomic Force Microscope Guided SERS Spectra Observation for Au@Ag-4MBA@PVP Plasmonic Nanoparticles. Molecules 2019; 24:E3789. [PMID: 31640276 PMCID: PMC6833001 DOI: 10.3390/molecules24203789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/08/2019] [Accepted: 10/17/2019] [Indexed: 11/29/2022] Open
Abstract
Recently polymer encapsulated surface-enhanced-Raman-scattering (SERS) probes with internal noble metal core-shell structure has found growing applications in biomedical applications. Here we studied the SERS spectra of Au@Ag-4MBA@PVP (4MBA: 4-mercaptobenzoic acid; PVP: polyvinylpyrrolidone) plasmonic nanoparticles produced from a chemical reduction method. By linking the atomic force microscope (AFM) with the homebuilt confocal Raman spectrometer thus to use AFM images as guidance, we realized the measurement of the SERS spectra from separated nanoparticles. We investigated the cases for single nanoparticles and for dimer structures and report several observed results including SERS spectra linearly scaled with laser power, abrupt boosting and abnormal shape changing of SERS spectra for dimer structures. Based on the finite element method simulation, we explained the observed ratio of SERS signals between the dimer structure and the single nanoparticle, and attributed the observed abnormal spectra to the photothermal effect of these plasmonic nanoparticles. Our study provides valuable guidance for choosing appropriate laser power when applying similar SERS probes to image biological cells.
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Affiliation(s)
- Liu Yang
- Nanophotonics Research Center, Shenzhen University, Shenzhen 518060, China.
- Institute of Modern Optics, Nankai University, Tianjin 30071, China.
| | - Libei Xu
- Nanophotonics Research Center, Shenzhen University, Shenzhen 518060, China.
| | - Xiuju Wu
- Nanophotonics Research Center, Shenzhen University, Shenzhen 518060, China.
| | - Hui Fang
- Nanophotonics Research Center, Shenzhen University, Shenzhen 518060, China.
| | - Shenfei Zhong
- Advanced Photonic Center, Southeast University, Nanjing 210096, China.
| | - Zhuyuan Wang
- Advanced Photonic Center, Southeast University, Nanjing 210096, China.
| | - Jing Bu
- College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, China.
| | - Xiaocong Yuan
- Nanophotonics Research Center, Shenzhen University, Shenzhen 518060, China.
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Pham XH, Hahm E, Huynh KH, Son BS, Kim HM, Jeong DH, Jun BH. 4-Mercaptobenzoic Acid Labeled Gold-Silver-Alloy-Embedded Silica Nanoparticles as an Internal Standard Containing Nanostructures for Sensitive Quantitative Thiram Detection. Int J Mol Sci 2019; 20:E4841. [PMID: 31569479 PMCID: PMC6801479 DOI: 10.3390/ijms20194841] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/20/2019] [Accepted: 09/26/2019] [Indexed: 12/21/2022] Open
Abstract
In this study, SiO2@Au@4-MBA@Ag (4-mercaptobenzoic acid labeled gold-silver-alloy-embedded silica nanoparticles) nanomaterials were investigated for the detection of thiram, a pesticide. First, the presence of Au@4-MBA@Ag alloys on the surface of SiO2 was confirmed by the broad bands of ultraviolet-visible spectra in the range of 320-800 nm. The effect of the 4-MBA (4-mercaptobenzoic acid) concentration on the Ag shell deposition and its intrinsic SERS (surface-enhanced Raman scattering) signal was also studied. Ag shells were well coated on SiO2@Au@4-MBA in the range of 1-1000 µM. The SERS intensity of thiram-incubated SiO2@Au@4-MBA@Ag achieved the highest value by incubation with 500 µL thiram for 30 min, and SERS was measured at 200 µg/mL SiO2@Au@4-MBA@Ag. Finally, the SERS intensity of thiram at 560 cm-1 increased proportionally with the increase in thiram concentration in the range of 240-2400 ppb, with a limit of detection (LOD) of 72 ppb.
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Affiliation(s)
- Xuan-Hung Pham
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Eunil Hahm
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Kim-Hung Huynh
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Byung Sung Son
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Hyung-Mo Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Dae Hong Jeong
- Department of Chemistry Education, Seoul National University, Seoul 151-742, Korea.
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
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Hassan SA. Strong dependence of the nano-bio interactions on core morphology and layer composition of ultrasmall nanostructures. J Chem Phys 2019; 151:105102. [PMID: 31521088 PMCID: PMC6910586 DOI: 10.1063/1.5115192] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 08/16/2019] [Indexed: 01/29/2023] Open
Abstract
The interactions between nanoparticles (NPs) and proteins, cells, and tissues, broadly known as nano-bio interactions, depend on the NP size and shape and on the characteristics of the NP coating layer, such as density, thickness, and chemical makeup. The dependence of nano-membrane interactions on the design parameters of ultrasmall nanostructures is studied by computer simulations. Considered here are spheres, plates, rings, rods, tubes, and helices made up of either bare magnetite or passivated gold, interacting with charged or zwitterionic membranes. The analysis reveals a strong dependence on shape, size, and layer composition of various quantities that characterize the nano-bio behavior, including binding modes and affinities. This sensitivity can be exploited to design nanostructures that bind preferentially to membranes or that stabilize or disrupt membrane structural integrity. The method used here is general and not limited to the ultrasmall regime, so it can be adopted to study other nano-bio interactions systematically. The implications for the distribution of NPs in cells and tissues (biodistribution) and for passive and active transmembrane transport are discussed, both important processes in biomedicine.
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Affiliation(s)
- Sergio A. Hassan
- Center for Molecular Modeling, OIR/CIT, National Institutes of Health, U.S. DHHS, Bethesda, Maryland 20892-0001, USA
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43
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Wangtrakuldee P, Adeniji AO, Zang T, Duan L, Khatri B, Twenter BM, Estrada MA, Higgins TF, Winkler JD, Penning TM. A 3-(4-nitronaphthen-1-yl) amino-benzoate analog as a bifunctional AKR1C3 inhibitor and AR antagonist: Head to head comparison with other advanced AKR1C3 targeted therapeutics. J Steroid Biochem Mol Biol 2019; 192:105283. [PMID: 30641225 PMCID: PMC6625945 DOI: 10.1016/j.jsbmb.2019.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/02/2019] [Accepted: 01/04/2019] [Indexed: 01/23/2023]
Abstract
Drugs used for the treatment of castration resistant prostate cancer (CRPC) include Abiraterone acetate (Zytiga®) and Enzalutamide (XTANDI®). However, these drugs provide clinical benefit in metastatic disease for only a brief period before drug resistance emerges. One mechanism of drug resistance involves the overexpression of type 5 17-β-hydroxysteroid dehydrogenase (aldo-keto reductase 1C3 or AKR1C3), a major enzyme responsible for the formation of intratumoral androgens that activate the androgen receptor (AR). 3-((4-Nitronaphthalen-1-yl)amino)benzoic acid 1 is a "first-in-class" AKR1C3 competitive inhibitor and AR antagonist. Compound 1 was compared in a battery of in vitro studies with structurally related N-naphthyl-aminobenzoates, and AKR1C3 targeted therapeutics e.g. GTx-560 and ASP9521, as well as with R-bicalutamide, enzalutamide and abiraterone acetate. Compound 1 was the only naphthyl derivative that was a selective AKR1C3 inhibitor and AR antagonist in direct competitive binding assays and in AR driven reporter gene assays. GTx-560 displayed weak activity as a direct AR antagonist but had high potency in the AR reporter gene assay consistent with its ability to inhibit the co-activator function of AKR1C3. By contrast ASP9521 did not act as either an AR antagonist or block AR reporter gene activity. Compound 1 was the only compound that showed comparable potency to inhibit AKR1C3 and act as a direct AR antagonist. Compound 1 blocked the formation of testosterone in LNCaP-AKR1C3 cells, and the expression of PSA driven by the AKR1C3 substrate (4-androstene-3,17-dione) and by an AR agonist, 5α-dihydrotestosterone consistent with its bifunctional role. Compound 1 blocked the nuclear translocation of the AR at similar concentrations to enzalutamide and caused disappearance of the AR from cell lysates. R-biaclutamide and enzalutamide inhibited AKR1C3 at concentrations 200x greater than compound 1, suggesting that its bifunctionality can be explained by a shared pharmacophore that can be optimized.
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Affiliation(s)
- Phumvadee Wangtrakuldee
- Department of Systems Pharmacology and Translational Therapeutics and the Center for Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, 1315 BRBII/III, 421 Curie Boulevard, Philadelphia, PA 19104-6160, USA
| | - Adegoke O Adeniji
- Department of Systems Pharmacology and Translational Therapeutics and the Center for Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, 1315 BRBII/III, 421 Curie Boulevard, Philadelphia, PA 19104-6160, USA
| | - Tianzhu Zang
- Department of Systems Pharmacology and Translational Therapeutics and the Center for Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, 1315 BRBII/III, 421 Curie Boulevard, Philadelphia, PA 19104-6160, USA
| | - Ling Duan
- Department of Systems Pharmacology and Translational Therapeutics and the Center for Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, 1315 BRBII/III, 421 Curie Boulevard, Philadelphia, PA 19104-6160, USA
| | - Buddha Khatri
- Department of Chemistry, University of Pennsylvania, 231 S. 34thStreet, Philadelphia, PA 19104-6323, USA
| | - Barry M Twenter
- Department of Chemistry, University of Pennsylvania, 231 S. 34thStreet, Philadelphia, PA 19104-6323, USA
| | - Michelle A Estrada
- Department of Chemistry, University of Pennsylvania, 231 S. 34thStreet, Philadelphia, PA 19104-6323, USA
| | - Tyler F Higgins
- Department of Chemistry, University of Pennsylvania, 231 S. 34thStreet, Philadelphia, PA 19104-6323, USA
| | - Jeffrey D Winkler
- Department of Chemistry, University of Pennsylvania, 231 S. 34thStreet, Philadelphia, PA 19104-6323, USA
| | - Trevor M Penning
- Department of Systems Pharmacology and Translational Therapeutics and the Center for Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, 1315 BRBII/III, 421 Curie Boulevard, Philadelphia, PA 19104-6160, USA.
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Kamal S, Akhter N, Noreen R, Salman M, Khan SG, Roheen T, Yaqoob N, Kamal A, Siddique WA. A new approach to design 3(3-sulfamoylbenzamido) benzoic acid containing transition metal complexes: Characterization and Biological activities. Pak J Pharm Sci 2019; 32:2317-2324. [PMID: 31894061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Zn, Cu, Co and Ni are biocompatible metals as they are active center of many enzymes in the human body. Incorporation of these biocompatible metals into 3-(o-Sulfamoylphenyl) carbamoylbenzoic acid (I) makes them able to prove an excellent antimicrobial agent. In the present study Ni (II), Co (II), Cu(II) and Zn (II) complexes (III-VI) were synthesized from ligand (I) derive from 3-(o-Sulfamoylphenyl) carbamoylbenzoic acid and zinc, nickel, cobalt acetate tetrahydrate/copper acetate monohydrate. Synthesized complexes (III-VI) were characterized by FT-IR, 1H NMR and 13CNMR. III-VI have 81-93% yield while melting points recorded were in the range of 209-239oC. Purity of ligands and their respective complexes was confirmed by TLC. Results of antibacterial properties suggested that III, IV, V and VI were highly active against gram +ve (S. epidermidis, B. subtilis. S. aureus, S. mutans) and gram -ve bacteria (E. coli and P. aruginosa). Comparison was also performed to check whether metal complexes or ligand with its derivative exhibit best result against all tested strains. The anthelmintic activity of the complexes III-VI against tape worm, liver fluke, thread worm, and hook worm using three different concentrations (15, 30, 45mg/mL), significantly (p<0.01) paralyzed the worms followed by death, which was comparable with that of the standard. Overall results indicated that S. epidermidis, S. mutans, E. coli and B. subtilis are very sensitive to complex III & IV and can be used for treatment of bacterial infections whereas Complex-V, could a potent target for anti-parasite therapy.
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Affiliation(s)
- Shagufta Kamal
- Department of Biochemistry, Govt. College University, Faisalabad, Pakistan
| | - Naheed Akhter
- Department of Allied Health Professional, Govt. College University, Faisalabad, Pakistan
| | - Razia Noreen
- Department of Biochemistry, Govt. College University, Faisalabad, Pakistan
| | - Mahwish Salman
- Department of Biochemistry, Govt. College University, Faisalabad, Pakistan
| | - Samreen Gul Khan
- Department of Chemistry, Govt. College University, Faisalabad, Pakistan
| | - Taleeha Roheen
- Department of Chemistry, University of Sargodha, Sargodha, Pakistan
| | - Nazia Yaqoob
- Deparment of Chemistry, Govt. College Women University, Faisalabad, Pakistan
| | - Amna Kamal
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
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45
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Chen W, Li S, Wang J, Sun K, Si Y. Metal and metal-oxide nanozymes: bioenzymatic characteristics, catalytic mechanism, and eco-environmental applications. Nanoscale 2019; 11:15783-15793. [PMID: 31432841 DOI: 10.1039/c9nr04771a] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Phenolic contaminants (R-OH) are a category of highly toxic organic compounds that are widespread in aquatic ecosystems and can induce carcinogenic risk to wildlife and humans; natural enzymes as green catalysts are capable of step-polymerizing these compounds to produce diverse macromolecular self-coupling products via radical-mediated C-C and C-O-C bonding at either the ortho- or para-carbon position, thereby evading the bioavailability and ecotoxicity of these compounds. Intriguingly, certain artificial metal and metal-oxide nanomaterials are known as nanozymes. They not only possess the unique properties of nanomaterials but also display intrinsic enzyme-mimicking activities. These artificial nanozymes are expected to surmount the shortcomings, such as low stability, easy inactivation, difficult recycling, and high cost, of natural enzymes, thus contributing to eco-environmental restoration. This review highlights the available studies on the enzymatic characteristics and catalytic mechanisms of natural enzymes and artificial metal and metal-oxide nanozymes in the removal and transformation of R-OH. These advances will provide key research directions beneficial to the multifunctional applications of artificial nanozymes in aquatic ecosystems.
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Affiliation(s)
- Wenjun Chen
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China.
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Jagleniec D, Ziach K, Dąbrowa K, Romański J. The Effect of Substitution Pattern on Binding Ability in Regioisomeric Ion Pair Receptors Based on an Aminobenzoic Platform. Molecules 2019; 24:molecules24162990. [PMID: 31426565 PMCID: PMC6720599 DOI: 10.3390/molecules24162990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 08/12/2019] [Accepted: 08/14/2019] [Indexed: 12/30/2022] Open
Abstract
A series of ditopic ion pair receptors equipped with 4-nitrophenylurea and 1-aza-18-crown-6-ether linked by ortho-(1), meta-(2), and para-(3) substituted benzoic acid were readily synthesized in three steps from commercially available materials. The binding properties of these regioisomeric receptors were determined using UV-vis and 1H NMR spectroscopy in MeCN and in the solid state by single-crystal X-ray diffraction crystallography. The solution studies revealed that, apart from carboxylates, all the anions tested formed stronger complexes in the presence of sodium cations. Receptors 2 and 3 were found to interact with ion pairs with remarkably higher affinity than ortho-substituted 1. 1H NMR titration experiments showed that both urea NH protons interacted with anions with comparable strength in the case of receptors 2 and 3, but only one of the NHs was effective in anion binding in the case of receptor 1. X-ray analysis of the crystal structure of receptor 1 and 1·NaPF6 complex showed that binding was hampered due to the formation of an intramolecular hydrogen bond. Analysis of the crystal structures of 2·NaBr and 3·NaBr complexes revealed that proper mutual orientation of binding domains was responsible for the improved binding of the sodium salts.
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Affiliation(s)
- Damian Jagleniec
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Krzysztof Ziach
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Kajetan Dąbrowa
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Jan Romański
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
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Hada AM, Potara M, Suarasan S, Vulpoi A, Nagy-Simon T, Licarete E, Astilean S. Fabrication of gold-silver core-shell nanoparticles for performing as ultrabright SERS-nanotags inside human ovarian cancer cells. Nanotechnology 2019; 30:315701. [PMID: 30974419 DOI: 10.1088/1361-6528/ab1857] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This paper presents the fabrication and characterization of new gold-silver core-shell nanoparticles labeled with para-mercaptobenzoic acid (4MBA) molecules and demonstrates their use as surface-enhanced Raman spectroscopy (SERS)-nanotags with ultra-bright traceability inside cells and ability to convey spectrally-coded information about the intracellular pH by means of SERS. Unlike previous reported studies, our fabrication procedure includes in the first step the synthesis of chitosan-coated gold nanoparticles as a seed material with subsequent growing of a silver shell. The bimetallic core-shell structure is revealed by transmission electron microscopy, high-angle annular dark field scanning transmission electron microscopy, energy-dispersive x-ray elemental mapping and the presence of two interacting localized surface plasmon resonance modes in UV-vis extinction spectrum. The high SERS activity and sensitivity of as fabricated 4MBA-chit-Au-AgNPs nano-constructs to different pH in solution is investigated under 532 and 633 nm laser lines excitation. Next, in view of future studies in cancer diagnosis, the in vitro antiproliferative effects of SERS-nanotags against human ovarian adenocarcinoma cells (NIH:OVCAR-3) are evaluated. The capacity to operate as bright SERS nanotags with precise localization at a single cell level as well as intracellular pH indicators is clearly demonstrated by performing cell imaging under scanning confocal Raman microscopy.
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Affiliation(s)
- Alexandru-Milentie Hada
- Department of Biomolecular Physics, Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu Str. 1, 400084 Cluj-Napoca, Romania. Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University, T. Laurian Str. 42, 400271 Cluj-Napoca, Romania
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Guo Y, Wang R, Yan C, Wang P, Rao L, Wang C. Developing boron nitride-pyromellitic dianhydride composite for removal of aromatic pollutants from wastewater via adsorption and photodegradation. Chemosphere 2019; 229:112-124. [PMID: 31078026 DOI: 10.1016/j.chemosphere.2019.04.196] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 04/15/2019] [Accepted: 04/25/2019] [Indexed: 06/09/2023]
Abstract
A series of boron nitride-pyromellitic dianhydride composites have been successfully synthesized by calcinating the mixtures of boron nitride (BN) and pyromellitic dianhydride (PA) at 350 °C, in which the composite (BNPA2) has the largest adsorption quantity (65.1 mg/g) for rhodamine B (RhB) and the best photo-removal efficiency for RhB under visible light irradiation. 1H NMR characterizations for BN, PA and BNPA2 suggest that this composite is formed via the reaction between the OH groups in BN and PA. BNPA2 can also adsorb neutral red (NR), methyl orange (MO), tetracycline (TC) and atrazine (AT). NR and MO can be photo-removed by BNPA2 under visible light irradiation. Colorless TC and AT can also be degraded by BNPA2 under visible light irradiation, suggesting that BNPA2 is visible light responsible photocatalyst. BNPA2 has the highest photo-removal efficiency for the cationic RhB and NR, followed by the anionic MO. This is from that BNPA2 has negative surface. When anionic MO mixes with cationic RhB (or NR) together, BNPA2 prefers to remove cationic RhB (or NR) from the mixture solution under visible light irradiation and the removal efficiency of anionic MO by BNPA2 is also increased. Thus, electrostatic interactions between dyes and BNPA2 as well as between dyes play significant role in the removal process. •O2- makes a main contribution for this photo-removal of these aromatic pollutants (dyes, TC and AT) by BNPA2 under visible light irradiation. Furthermore, the removal performance of BNPA2 for RhB, TC and AT can be effectively regenerated by visible light irradiation.
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Affiliation(s)
- Yong Guo
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210093, PR China
| | - Ruxia Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210093, PR China
| | - Congcong Yan
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210093, PR China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210093, PR China.
| | - Lei Rao
- College of Mechanics and Materials, Hohai University, Nanjing, 210093, PR China
| | - Chao Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210093, PR China
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Jiang CS, Ge YX, Cheng ZQ, Wang YY, Tao HR, Zhu K, Zhang H. Discovery of New Selective Butyrylcholinesterase (BChE) Inhibitors with Anti-Aβ Aggregation Activity: Structure-Based Virtual Screening, Hit Optimization and Biological Evaluation. Molecules 2019; 24:molecules24142568. [PMID: 31311169 PMCID: PMC6680840 DOI: 10.3390/molecules24142568] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/11/2019] [Accepted: 07/12/2019] [Indexed: 11/30/2022] Open
Abstract
In this study, a series of selective butyrylcholinesterase (BChE) inhibitors was designed and synthesized from the structural optimization of hit 1, a 4-((3,4-dihydroisoquinolin-2(1H)-yl)methyl)benzoic acid derivative identified by virtual screening our compound library. The in vitro enzyme assay results showed that compounds 9 ((4-((3,4-dihydroisoquinolin-2(1H)-yl)methyl)phenyl)(pyrrolidin-1-yl)methanone) and 23 (N-(2-bromophenyl)-4-((3,4-dihydroisoquinolin-2(1H)-yl)methyl)benzamide) displayed improved BChE inhibitory activity and good selectivity towards BChE versus AChE. Their binding modes were probed by molecular docking and further validated by molecular dynamics simulation. Kinetic analysis together with molecular modeling studies suggested that these derivatives could target both the catalytic active site (CAS) and peripheral anionic site (PAS) of BChE. In addition, the selected compounds 9 and 23 displayed anti-Aβ1–42 aggregation activity in a dose-dependent manner, and they did not show obvious cytotoxicity towards SH-SY5Y neuroblastoma cells. Also, both compounds showed significantly protective activity against Aβ1-42-induced toxicity in a SH-SY5Y cell model. The present results provided a new valuable chemical template for the development of selective BChE inhibitors.
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Affiliation(s)
- Cheng-Shi Jiang
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China.
| | - Yong-Xi Ge
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
| | - Zhi-Qiang Cheng
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
| | - Yin-Yin Wang
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
| | - Hong-Rui Tao
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Meteria Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Kongkai Zhu
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China.
| | - Hua Zhang
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China.
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50
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Moural TW, White DSD, Choy CJ, Kang C, Berkman CE. Crystal Structure of Phosphoserine BlaC from Mycobacterium tuberculosis Inactivated by Bis(Benzoyl) Phosphate. Int J Mol Sci 2019; 20:E3247. [PMID: 31269656 PMCID: PMC6650796 DOI: 10.3390/ijms20133247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 06/28/2019] [Accepted: 06/29/2019] [Indexed: 11/16/2022] Open
Abstract
Mycobacterium tuberculosis, the pathogen responsible for tuberculosis (TB), is the leading cause of death from infectious disease worldwide. The class A serine β-lactamase BlaC confers Mycobacterium tuberculosis resistance to conventional β-lactam antibiotics. As the primary mechanism of bacterial resistance to β-lactam antibiotics, the expression of a β-lactamase by Mycobacterium tuberculosis results in hydrolysis of the β-lactam ring and deactivation of these antibiotics. In this study, we conducted protein X-ray crystallographic analysis of the inactivation of BlaC, upon exposure to the inhibitor bis(benzoyl) phosphate. Crystal structure data confirms that serine β-lactamase is phosphorylated at the catalytic serine residue (Ser-70) by this phosphate-based inactivator. This new crystallographic evidence suggests a mechanism for phosphorylation of BlaC inhibition by bis(benzoyl) phosphate over acylation. Additionally, we confirmed that bis(benzoyl) phosphate inactivated BlaC in a time-dependent manner.
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Affiliation(s)
- Timothy W Moural
- Department of Chemistry, Washington State University, Pullman, WA 99164, USA
- Department of Entomology, Pennsylvania State University, University Park, PA 16802, USA
| | | | - Cindy J Choy
- Department of Chemistry, Washington State University, Pullman, WA 99164, USA
| | - Chulhee Kang
- Department of Chemistry, Washington State University, Pullman, WA 99164, USA.
| | - Clifford E Berkman
- Department of Chemistry, Washington State University, Pullman, WA 99164, USA.
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