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Aggarwal R, Jain N, Dubey GP. Design, synthesis and characterization of tetra substituted 2,3-dihydrothiazole derivatives as DNA and BSA targeting agents: advantages of the visible-light-induced multicomponent approach. RSC Adv 2024; 14:23152-23176. [PMID: 39040709 PMCID: PMC11262567 DOI: 10.1039/d4ra02331e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 06/22/2024] [Indexed: 07/24/2024] Open
Abstract
This report describes the visible-light-induced one-pot multicomponent regioselective synthesis of a series of 5-aroyl-3-((arylidene)amino)-2-((arylidene)hydrazono)-4-methyl-2,3-dihydrothiazoles as DNA and BSA targeting agents. The multicomponent condensation of thiocarbohydrazide and aldehydes with α-bromo-1,3-diketones, generated in situ by the bromination of unsymmetrical 1,3-diketones with NBS using white LED light as an environmental friendly source in the presence of EtOAc solvent furnished the titled 2,3-dihydrothiazole derivatives in excellent yields. The exact regioisomeric structure was identified unambiguously by employing multinuclear 2D-NMR spectroscopy [1H-13C] HMBC; [1H-13C] HMQC and [1H-15N] HMBC. Furthermore, the binding characteristics of the synthesized 2,3-dihydrothiazole derivatives were assessed with double-stranded calf-thymus DNA duplex (ct-DNA) and bovine serum albumin (BSA). Initial screening of all the synthesized 2,3-dihydrothiazole derivatives using various in silico techniques including molecular reactivity analysis, Lipinski rule and molecular docking, concluded 5-(4'-chlorobenzoyl)-3-((4''-methoxybenzylidene)amino)-2-(4'''-methoxybenzylidene)hydrazono)-4-methyl-2,3-dihydrothiazole derivative 6a as the most suitable compound for studying binding interaction with DNA and BSA. Additionally, to illustrate the ex vivo binding mode of 6a with DNA and BSA, several spectroscopic techniques viz. UV-visible, circular dichroism (CD), steady-state fluorescence and competitive displacement assays were carried out.
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Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University Kurukshetra 136119 Haryana India
- CSIR-National Institute of Science Communication and Policy Research New Delhi 110012 India +91-9896740740
| | - Naman Jain
- Department of Chemistry, Kurukshetra University Kurukshetra 136119 Haryana India
| | - Gyan Prakash Dubey
- Department of Chemistry, Kurukshetra University Kurukshetra 136119 Haryana India
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Yin J, Wu S, Yang Y, Wang D, Ma Y, Zhao Y, Sheth S, Huang H, Song B, Chen Z. In Addition to Damaging the Plasma Membrane, Phenolic Monoterpenoid Carvacrol Can Bind to the Minor Groove of DNA of Phytopathogenic Fungi to Potentially Control Tea Leaf Spot Caused by Lasiodiplodia theobromae. PHYTOPATHOLOGY 2024; 114:700-716. [PMID: 37856707 DOI: 10.1094/phyto-07-23-0263-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Carvacrol expresses a wide range of biological activities, but the studies of its mechanisms focused on bacteria, mainly involving the destruction of the plasma membrane. In this study, carvacrol exhibited strong activities against several phytopathogenic fungi and demonstrated a novel antifungal mechanism against Lasiodiplodia theobromae. RNA sequencing indicated that many genes of L. theobromae hyphae were predominately induced by carvacrol, particularly those involved in replication and transcription. Hyperchromic, hypsochromic, and bathochromic effects in the UV-visible absorption spectrum were observed following titration of calf thymus DNA (ctDNA) and carvacrol, which indicated the formation of a DNA-carvacrol complex. Circular dichroism (CD) spectroscopy indicated that the response of DNA to carvacrol was similar to that of 4',6-diamidino-2-phenylindole (DAPI) but different from that of ethidium bromide (EB), implying the ionic bonds between carvacrol and ctDNA. Fluorescence spectrum (FS) analysis indicated that carvacrol quenched the fluorescence of double-stranded DNA (dsDNA) more than single-stranded DNA, indicating that carvacrol mainly bound to dsDNA. A displacement assay showed that carvacrol reduced the fluorescence intensity of the DNA-DAPI complex through competition with DAPI, but this did not occur for DNA-EB. The FS assay revealed that carvacrol bound to the AAA sequence on the minor groove of ds-oligonucleotides. The hydroxyl of carvacrol was verified to bind to ctDNA through a comparative test in which structural analogs of carvacrol, including thymol and 4-ethyl-1,2-dimethyl, were analyzed. The current study indicated carvacrol can destruct plasma membranes and bind to the minor groove of DNA, inhibiting fungal proliferation by disturbing the stability of dsDNA.
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Affiliation(s)
- Jiayu Yin
- National Key Laboratory of Green Pesticide, Guiyang, Guizhou 550025, China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
| | - Shuang Wu
- National Key Laboratory of Green Pesticide, Guiyang, Guizhou 550025, China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
| | - Yongli Yang
- National Key Laboratory of Green Pesticide, Guiyang, Guizhou 550025, China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
| | - Delu Wang
- College of Forestry, Guizhou University, Guiyang, Guizhou 550025, China
| | - Yue Ma
- National Key Laboratory of Green Pesticide, Guiyang, Guizhou 550025, China
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China
| | - Yongtian Zhao
- National Key Laboratory of Green Pesticide, Guiyang, Guizhou 550025, China
- School of Life Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, Guizhou, China
| | - Sujitraj Sheth
- National Key Laboratory of Green Pesticide, Guiyang, Guizhou 550025, China
| | - Honglin Huang
- National Key Laboratory of Green Pesticide, Guiyang, Guizhou 550025, China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
| | - Baoan Song
- National Key Laboratory of Green Pesticide, Guiyang, Guizhou 550025, China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
| | - Zhuo Chen
- National Key Laboratory of Green Pesticide, Guiyang, Guizhou 550025, China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
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3
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Li J, Ni Y, Wang J, Zhu Y, Wang A, Zhu X, Sun X, Wang S, Li D, Zhou H. Precisely modulating the chromatin tracker via substituent engineering: reporting pathological oxidative stress during mitosis. Chem Sci 2024; 15:3949-3956. [PMID: 38487223 PMCID: PMC10935666 DOI: 10.1039/d3sc06342a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 01/05/2024] [Indexed: 03/17/2024] Open
Abstract
An in-depth understanding of cancer-cell mitosis presents unprecedented advantages for solving metastasis and proliferation of tumors, which has aroused great interest in visualizing the behavior via a luminescence tool. We developed a fluorescent molecule CBTZ-yne based on substituent engineering to acquire befitting lipophilicity and electrophilicity for anchoring lipid droplets and the nucleus, in which the low polarity environment and nucleic acids triggered a "weak-strong" fluorescence and "short-long" fluorescence-lifetime response. Meaningfully, CBTZ-yne visualized chromatin condensation, alignment, pull-push, and separation as well as lipid droplet dynamics, for the first time, precisely unveiling the asynchronous cellular mitosis processes affected by photo-generation reactive oxygen species according to the subtle change of fluorescence-lifetime. Our work suggested a new guideline for tracking the issue of the proliferation of malignant tumors in photodynamic therapy.
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Affiliation(s)
- Jinsong Li
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Institute of Physical Science and Information Technology, Center of Free Electron Laser & High Magnetic Field, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Key Laboratory of Functional Inorganic Materials Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University Hefei 230601 P. R. China
| | - Yingyong Ni
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Institute of Physical Science and Information Technology, Center of Free Electron Laser & High Magnetic Field, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Key Laboratory of Functional Inorganic Materials Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University Hefei 230601 P. R. China
| | - Junjun Wang
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Institute of Physical Science and Information Technology, Center of Free Electron Laser & High Magnetic Field, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Key Laboratory of Functional Inorganic Materials Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University Hefei 230601 P. R. China
| | - Yicai Zhu
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Institute of Physical Science and Information Technology, Center of Free Electron Laser & High Magnetic Field, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Key Laboratory of Functional Inorganic Materials Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University Hefei 230601 P. R. China
| | - Aidong Wang
- Key Laboratory of Drug Design, Huangshan University Huangshan 245021 P. R. China
| | - Xiaojiao Zhu
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Institute of Physical Science and Information Technology, Center of Free Electron Laser & High Magnetic Field, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Key Laboratory of Functional Inorganic Materials Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University Hefei 230601 P. R. China
| | - Xianshun Sun
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Institute of Physical Science and Information Technology, Center of Free Electron Laser & High Magnetic Field, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Key Laboratory of Functional Inorganic Materials Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University Hefei 230601 P. R. China
| | - Sen Wang
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Institute of Physical Science and Information Technology, Center of Free Electron Laser & High Magnetic Field, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Key Laboratory of Functional Inorganic Materials Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University Hefei 230601 P. R. China
| | - Dandan Li
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Institute of Physical Science and Information Technology, Center of Free Electron Laser & High Magnetic Field, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Key Laboratory of Functional Inorganic Materials Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University Hefei 230601 P. R. China
| | - Hongping Zhou
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Institute of Physical Science and Information Technology, Center of Free Electron Laser & High Magnetic Field, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Key Laboratory of Functional Inorganic Materials Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University Hefei 230601 P. R. China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University Wuhu 241000 P. R. China
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4
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Dos Santos JC, Alves JEF, de Azevedo RDS, de Lima ML, de Oliveira Silva MR, da Silva JG, da Silva JM, de Carvalho Correia AC, do Carmo Alves de Lima M, de Oliveira JF, de Moura RO, de Almeida SMV. Study of nitrogen heterocycles as DNA/HSA binder, topoisomerase inhibitors and toxicological safety. Int J Biol Macromol 2024; 254:127651. [PMID: 37949265 DOI: 10.1016/j.ijbiomac.2023.127651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 10/19/2023] [Accepted: 10/23/2023] [Indexed: 11/12/2023]
Abstract
Four new nitrogen-containing heterocyclic derivatives (acridine, quinoline, indole, pyridine) were synthesized and their biological properties were evaluated. The compounds showed affinity for DNA and HSA, with CAIC and CAAC displaying higher binding constants (Kb) of 9.54 × 104 and 1.06 × 106, respectively. The fluorescence quenching assay (Ksv) revealed suppression values ranging from 0.34 to 0.64 × 103 M-1 for ethidium bromide (EB) and 0.1 to 0.34 × 103 M-1 for acridine orange (AO). Molecular docking confirmed the competition of the derivatives with intercalation probes at the same binding site. At 10 μM concentrations, the derivatives inhibited topoisomerase IIα activity. In the antiproliferative assays, the compounds demonstrated activity against MCF-7 and T47-D tumor cells and nonhemolytic profile. Regarding toxicity, no acute effects were observed in the embryos. However, some compounds caused enzymatic and cardiac changes, particularly the CAIC, which increased SOD activity and altered heart rate compared to the control. These findings suggest potential antitumor action of the derivatives and indicate that substituting the acridine core with different cores does not interfere with their interaction and topoisomerase inhibition. Further investigations are required to assess possible toxicological effects, including reactive oxygen species generation.
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Affiliation(s)
- Jéssica Celerino Dos Santos
- Molecular Biology Laboratory, University of Pernambuco (UPE), Multicampi Garanhuns, Garanhuns, PE 55290-000, Brazil
| | | | | | - Maksuelly Libanio de Lima
- Molecular Biology Laboratory, University of Pernambuco (UPE), Multicampi Garanhuns, Garanhuns, PE 55290-000, Brazil
| | | | - Josefa Gerlane da Silva
- Molecular Biology Laboratory, University of Pernambuco (UPE), Multicampi Garanhuns, Garanhuns, PE 55290-000, Brazil
| | - Jamire Muriel da Silva
- Department of Pharmacy, Laboratory of Synthesis and Vectorization of Molecules, State University of Paraíba (UEPB), Campus Campina Grande, 58429-500, PB, Brazil
| | | | - Maria do Carmo Alves de Lima
- Chemistry and Therapeutic Innovation Laboratory (LQIT), Department of Antibiotics, Federal University of Pernambuco, Recife, PE, Brazil
| | | | - Ricardo Olímpio de Moura
- Department of Pharmacy, Laboratory of Synthesis and Vectorization of Molecules, State University of Paraíba (UEPB), Campus Campina Grande, 58429-500, PB, Brazil
| | - Sinara Mônica Vitalino de Almeida
- Molecular Biology Laboratory, University of Pernambuco (UPE), Multicampi Garanhuns, Garanhuns, PE 55290-000, Brazil; Keizo Asami Immunopathology Laboratory (LIKA), Federal University of Pernambuco, Recife, PE, Brazil; Chemistry and Therapeutic Innovation Laboratory (LQIT), Department of Antibiotics, Federal University of Pernambuco, Recife, PE, Brazil.
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5
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Sawada H, Mase K, Koyama R, Suenaga A. Inhibitory Effect on RT-PCR and Restriction Enzyme Activity by Ommochrome and Its Mechanism. Zoolog Sci 2023; 40:431-436. [PMID: 38064369 DOI: 10.2108/zs230068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 09/20/2023] [Indexed: 12/18/2023]
Abstract
To explore the physiological role and/or pharmacological effects of ommochrome, which is a natural organic pigment widely distributed in Protostomia, we attempted to investigate the influence of ommochrome on RT-PCR and activities of restriction enzymes. It was found that ommin, an ommochrome purified from the diapause eggs of Bombyx mori, inhibited the RT-PCR and restriction enzyme activities. The mechanism of these inhibitory reactions is assumed to be the direct binding of ommochrome to DNA rather than acting against the enzymes because, similarly to actinomycin D, there is a phenoxazine ring in the structure of ommin that is known to be intercalated to DNA. To reveal the ommin/DNA interaction, it was investigated by computational approaches such as molecular docking, molecular dynamics simulation, and free energy calculation. From the computational analyses, it was expected that ommin would bind to DNA with almost the same strength as actinomycin D and intercalate into DNA. This is the first report on the pharmacological effect of ommochrome and its inhibitory mechanism obtained from biochemical and computational analyses.
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Affiliation(s)
- Hiroshi Sawada
- Department of Biosciences, College of Humanities and Sciences, Nihon University, Setagaya-ku, Tokyo 156-8550, Japan,
| | - Keisuke Mase
- Department of Biosciences, College of Humanities and Sciences, Nihon University, Setagaya-ku, Tokyo 156-8550, Japan
| | - Rimi Koyama
- Department of Biosciences, College of Humanities and Sciences, Nihon University, Setagaya-ku, Tokyo 156-8550, Japan
| | - Atsushi Suenaga
- Department of Biosciences, College of Humanities and Sciences, Nihon University, Setagaya-ku, Tokyo 156-8550, Japan
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Aggarwal R, Jain N, Dubey GP, Singh S, Chandra R. Visible Light-Prompted Regioselective Synthesis of Novel 5-Aroyl/hetaroyl-2',4-dimethyl-2,4'-bithiazoles as DNA- and BSA-Targeting Agents. Biomacromolecules 2023; 24:4798-4818. [PMID: 37729507 DOI: 10.1021/acs.biomac.3c00554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Organic transformations mediated by visible light have gained popularity in recent years as they are green, renewable, inexpensive, and clean and yield excellent products. The present study describes cyclo-condensation of 2-methylthiazole-4-carbothioamide with differently substituted α-bromo-1,3-diketones achieved by utilizing a white light-emitting diode (LED) (9W) to accomplish the regioselective synthesis of novel 5-aroyl/hetaroyl-2',4-dimethyl-2,4'-bithiazole derivatives as DNA/bovine serum albumin (BSA)-targeting agents. The structure characterization of the exact regioisomer was achieved unequivocally by heteronuclear two-dimensional nuclear magnetic resonance (2D-NMR) spectroscopy [1H-13C] HMBC; [1H-13C] HMQC; and [1H-15N] HMBC. In silico toxicity studies indicated that the synthesized compounds exhibit low toxicity risks and adhere to the rules of oral bioavailability without any exception. Computational molecular modeling of the bithiazole derivatives with the dodecamer sequence of the DNA duplex and BSA identified 5-(4-chlorobenzoyl)-2',4-dimethyl-2,4'-bithiazole 7g as the most suitable derivative that can interact effectively with these biomolecules. Furthermore, theoretical results concurred with the ex vivo binding mode of the 7g with calf thymus DNA (ct-DNA) and BSA through a variety of spectroscopic techniques, viz., ultraviolet-visible (UV-visible), circular dichroism (CD), steady-state fluorescence, and competitive displacement assay, along with viscosity measurements.
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Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
- CSIR-National Institute of Science Communication and Policy Research, New Delhi 110012, India
| | - Naman Jain
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
| | - Gyan Prakash Dubey
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
| | - Snigdha Singh
- Department of Chemistry, University of Delhi, New Delhi 110007, India
| | - Ramesh Chandra
- Department of Chemistry, University of Delhi, New Delhi 110007, India
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Silva DVSPD, Nascimento PHDB, Rocha JVRD, Marques DSC, Brayner FA, Alves LC, Araújo HDAD, Cruz Filho IJD, Albuquerque MCPDA, Lima MDCAD, Aires ADL. In vitro activity, ultrastructural analysis and in silico pharmacokinetic properties (ADMET) of thiazole compounds against adult worms of Schistosoma mansoni. Acta Trop 2023; 245:106965. [PMID: 37295486 DOI: 10.1016/j.actatropica.2023.106965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/03/2023] [Accepted: 06/06/2023] [Indexed: 06/12/2023]
Abstract
The present work aimed to carry out in vitro biological assays of thiazole compounds against adult worms of Schistosoma mansoni, as well as the in silico determination of pharmacokinetic parameters to predict the oral bioavailability of these compounds. In addition to presenting moderate to low cytotoxicity against mammalian cells, thiazole compounds are not considered hemolytic. All compounds were initially tested at concentrations ranging from 200 to 6.25 μM against adult worms of S. mansoni parasites. The results showed the best activity of PBT2 and PBT5 at a concentration of 200 μM, which caused 100% mortality after 3 h of incubation. While at 6 h of exposure, 100% mortality was observed at the concentration of 100 µM. Subsequent studies with these same compounds allowed classifying PBT5, PBT2, PBT6 and PBT3 compounds, which were considered active and PBT1 and PBT4 compounds, which were considered inactive. In the ultrastructural analysis the compounds PBT2 and PBT5 (200 µM) promoted integumentary changes with exposure of the muscles, formation of integumentary blisters, integuments with abnormal morphology and destruction of tubercles and spicules. Therefore, the compounds PBT2 and PBT5 are promising antiparasitics against S. mansoni.
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Affiliation(s)
| | - Pedro Henrique do Bomfim Nascimento
- Departamento de Antibióticos, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50.670-901, Recife, PE, Brazil
| | - João Victor Ritinto da Rocha
- Centro de Ciências Médicas - Programa de Pós-graduação em Medicina Tropical, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
| | - Diego Santa Clara Marques
- Departamento de Antibióticos, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50.670-901, Recife, PE, Brazil
| | - Fábio André Brayner
- Departamento de Parasitologia, Instituto Aggeu Magalhães, Avenida Prof. Moraes Rego, 1235, Cidade Universitária. CEP 50670-901, Recife, PE, Brazil; Instituto Keizo Asami - iLIKA, UFPE, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50670-901, Recife-PE, Brazil
| | - Luiz Carlos Alves
- Departamento de Parasitologia, Instituto Aggeu Magalhães, Avenida Prof. Moraes Rego, 1235, Cidade Universitária. CEP 50670-901, Recife, PE, Brazil; Instituto Keizo Asami - iLIKA, UFPE, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50670-901, Recife-PE, Brazil
| | - Hallysson Douglas Andrade de Araújo
- Instituto Keizo Asami - iLIKA, UFPE, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50670-901, Recife-PE, Brazil; Departamento de Bioquímica. Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50.670-901, Recife, PE, Brazil
| | - Iranildo José da Cruz Filho
- Centro de Biociências, Programa de Pós-graduação em Morfotecnologia, Universidade Federal de Pernambuco, Recife, Brazil; Departamento de Antibióticos, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50.670-901, Recife, PE, Brazil
| | | | - Maria do Carmo Alves de Lima
- Departamento de Parasitologia, Instituto Aggeu Magalhães, Avenida Prof. Moraes Rego, 1235, Cidade Universitária. CEP 50670-901, Recife, PE, Brazil
| | - André de Lima Aires
- Centro de Biociências, Programa de Pós-graduação em Morfotecnologia, Universidade Federal de Pernambuco, Recife, Brazil; Centro de Ciências Médicas - Programa de Pós-graduação em Medicina Tropical, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil; Instituto Keizo Asami - iLIKA, UFPE, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50670-901, Recife-PE, Brazil.
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8
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Al-Otaibi JS, Mary YS, Mary YS, Thomas R. Evidences of noncovalent interactions between indole and dichloromethane under different solvent conditions. J Mol Model 2023; 29:246. [PMID: 37442832 DOI: 10.1007/s00894-023-05623-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023]
Abstract
CONTEXT Theoretical investigation of indole (IND) and its binary combination with dichloromethane (DC) in various solvents were computed to track the impact of molecular interactions on spectral characteristics. When transitioning from plain drug to complexes, different modes of IND display a substantial shift in peak location. The 3561.26 cm-1 band shows (~15.58 cm-1) red shift upon dilution. The geometry in various solvents was calculated using quantum chemical calculation utilizing density functional theory (DFT). The highest ALIE values are located at the indole skeleton and on complexation with DC, and the ring atoms become more electron rich. The atom-centered density matrix propagation (ADMP) molecular dynamic (MD) calculation shows that the geometries optimized through the DFT calculation match the global minima effectively. MD simulations indicate that indole is more stable in water and methanol. METHODS DFT studies have been employed to study the interaction between indole and dichloromethane. CAM-B3LYP/6-311++G(d)(6D,7F) level of theory was employed using Gaussian 16 W suite. Quantum topological descriptors were discussed using quantum theory of atoms in molecules (QTAIM) with the help of Multiwfn software. Reduced density gradient (RDG) plot describes the nature of the interaction, while average local ionization energy (ALIE) explained the variation in local ionization energy of the molecular surface before and after complexation.
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Affiliation(s)
- Jamelah S Al-Otaibi
- Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia.
| | | | | | - Renjith Thomas
- Department of Chemistry, St. Berchmans College (Autonomous), Mahatma Gandhi University, Changanassery, Kerala, India
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9
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Jacob IT, da Cruz Filho IJ, Alves JEF, de Melo Souza F, de Azevedo RDS, Marques DSC, de Lima Souza TRC, Dos Santos KL, da Rocha Pitta MG, de Melo Rêgo MJB, Oliveira JF, Almeida SMV, do Carmo Alves de Lima M. Interaction study with DNA/HSA, anti-topoisomerase IIα, cytotoxicity and in vitro antiproliferative evaluations and molecular docking of indole-thiosemicarbazone compounds. Int J Biol Macromol 2023; 234:123606. [PMID: 36773880 DOI: 10.1016/j.ijbiomac.2023.123606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/20/2023] [Accepted: 02/05/2023] [Indexed: 02/11/2023]
Abstract
In this work we will discuss the antiproliferative evaluation and the possible mechanisms of action of indole-thiosemicarbazone compounds LTs with anti-inflammatory activity, previously described in the literature. In this perspective, some analyzes were carried out, such as the study of binding to human serum albumin (HSA) and to biological targets: DNA and human topoisomerase IIα (topo). Antiproliferative study was performed with DU-145, Jukart, MCF-7 and T-47D tumor lines and J774A.1, besides HepG2 macrophages and hemolytic activity. In the HSA interaction tests, the highest binding constant was 3.70 × 106 M-1, referring to LT89 and in the fluorescence, most compounds, except for LT76 and LT87, promoted fluorescent suppression with the largest Stern-Volmer constant for the LT88 3.55 × 104. In the antiproliferative assay with DU-145 and Jurkat strains, compounds LT76 (0.98 ± 0.10/1.23 ± 0.32 μM), LT77 (0.94 ± 0.05/1.18 ± 0.08 μM) and LT87 (0.94 ± 0.12/0.84 ± 0.09 μM) stood out, due to their IC50 values mentioned above. With the MCF-7 and T-47D cell lines, the lowest IC50 was presented by LT81 with values of 0.74 ± 0.12 μM and 0.68 ± 0.10 μM, respectively, followed by the compounds LT76 and LT87. As well as the positive control amsacrine, the compounds LT76, LT81 and LT87 were able to inhibit the enzymatic action of human Topoisomerase IIα.
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Affiliation(s)
- Iris Trindade Jacob
- Department of Antibiotics, Federal University of Pernambuco, 50670-901, Brazil
| | | | | | - Felipe de Melo Souza
- Universidade de Pernambuco (UPE), Multicampi Garanhuns, Garanhuns, PE 55290-000, Brazil
| | | | | | | | | | | | | | - Jamerson Ferreira Oliveira
- University for the International Integration of Afro-Brazilian Lusophony (UNILAB), 62790-970 Redenção, CE, Brazil
| | - Sinara Mônica Vitalino Almeida
- Laboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, 50670-901, Brazil; Universidade de Pernambuco (UPE), Multicampi Garanhuns, Garanhuns, PE 55290-000, Brazil.
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10
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Synthesis, characterization, antioxidant and antiparasitic activities new naphthyl-thiazole derivatives. Exp Parasitol 2023; 248:108498. [PMID: 36907541 DOI: 10.1016/j.exppara.2023.108498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 02/10/2023] [Accepted: 03/03/2023] [Indexed: 03/14/2023]
Abstract
In this work, 13 thiosemicarbazones (1a - m) and 16 thiazoles (2a - p) were obtained, which were properly characterized by spectroscopic and spectrometric techniques. The pharmacokinetic properties obtained in silico revealed that the derivatives are in accordance with the parameters established by lipinski and veber, showing that such compounds have good bioavailability or permeability when administered orally. In assays of antioxidant activity, thiosemicarbazones showed moderate to high antioxidant potential when compared to thiazoles. In addition, they were able to interact with albumin and DNA. Screening assays to assess the toxicity of compounds to mammalian cells revealed that thiosemicarbazones were less toxic when compared to thiazoles. In relation to in vitro antiparasitic activity, thiosemicarbazones and thiazoles showed cytotoxic potential against the parasites Leishmania amazonensis and Trypanosoma cruzi. Among the compounds, 1b, 1j and 2l stood out, showing inhibition potential for the amastigote forms of the two parasites. As for the in vitro antimalarial activity, thiosemicarbazones did not inhibit Plasmodium falciparum growth. In contrast, thiazoles promoted growth inhibition. This study shows in a preliminary way that the synthesized compounds have antiparasitic potential in vitro.
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11
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Hu AH, Duan QX, Xiong XY, Kang Z, Bai AM, Yin MM, Hu YJ. Revealing the effects of ligands of silver nanoclusters on the interactions between them and ctDNA: Abstraction to visualization. Int J Biol Macromol 2023; 236:123965. [PMID: 36906202 DOI: 10.1016/j.ijbiomac.2023.123965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 03/01/2023] [Accepted: 03/04/2023] [Indexed: 03/11/2023]
Abstract
Silver nanoclusters (AgNCs) have been widely applied in the field of biology, drug therapy and cell imaging in the last decade. In order to study the biosafety of AgNCs, GSH-AgNCs and DHLA-AgNCs were synthesized using glutathione (GSH) and dihydrolipoic acid (DHLA) as ligands, and their interactions with calf thymus DNA (ctDNA) from abstraction to visualization were studied. The results of spectroscopy, viscometry and molecular docking demonstrated that GSH-AgNCs mainly bound to ctDNA in a groove mode, while DHLA-AgNCs were both groove and intercalation binding. Fluorescence experiments suggested that the quenching mechanism of both AgNCs to the emission of ctDNA-probe were both in static mode, and thermodynamic parameters demonstrated that the main forces between GSH-AgNCs and ctDNA were hydrogen bonds and van der Waals forces, while hydrogen bonds and hydrophobic forces contributed to the binding of DHLA-AgNCs to ctDNA. The binding strength demonstrated that DHLA-AgNCs bound to ctDNA more strongly than that of GSH-AgNCs. The results of circular dichroism (CD) spectroscopy reflected small effects of both AgNCs on the structure of ctDNA. This study will support the theoretical foundation for the biosafety of AgNCs and have a guiding significance for the preparation and application of AgNCs.
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Affiliation(s)
- Ao-Hong Hu
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Qi-Xuan Duan
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Xin-Yuan Xiong
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Zhuo Kang
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Ai-Min Bai
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Miao-Miao Yin
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China.
| | - Yan-Jun Hu
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China.
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Cruz Filho IJDA, Oliveira JFDE, Santos ACS, Pereira VRA, Lima MCADE. Synthesis of 4-(4-chlorophenyl)thiazole compounds: in silico and in vitro evaluations as leishmanicidal and trypanocidal agents. AN ACAD BRAS CIENC 2023; 95:e20220538. [PMID: 37132749 DOI: 10.1590/0001-3765202320220538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 02/23/2023] [Indexed: 05/04/2023] Open
Abstract
Neglected tropical diseases are a diverse group of communicable pathologies that mainly prevail in tropical and subtropical regions. Thus, the objective of this work was to evaluate the biological potential of eight 4-(4-chlorophenyl)thiazole compounds. Tests were carried out in silico to evaluate the pharmacokinetic properties, the antioxidant, cytotoxic activities in animal cells and antiparasitic activities were evaluated against the different forms of Leishmania amazonensis and Trypanosoma cruzi in vitro. The in silico study showed that the evaluated compounds showed good oral availability. In a preliminary in vitro study, the compounds showed moderate to low antioxidant activity. Cytotoxicity assays show that the compounds showed moderate to low toxicity. In relation to leishmanicidal activity, the compounds presented IC50 values that ranged from 19.86 to 200 µM for the promastigote form, while for the amastigote forms, IC50 ranged from 101 to more than 200 µM. The compounds showed better results against the forms of T. cruzi with IC50 ranging from 1.67 to 100 µM for the trypomastigote form and 1.96 to values greater than 200 µM for the amastigote form. This study showed that thiazole compounds can be used as future antiparasitic agents.
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Affiliation(s)
- Iranildo José DA Cruz Filho
- Federal University of Pernambuco (UFPE), Department of Antibiotics, Av. Prof. Moraes Rego, 1235, Cidade Universitária, 50670-901 Recife, PE, Brazil
| | - Jamerson F DE Oliveira
- University of International Integration of Afro-Brazilian Lusophony (UNILAB), Av. da Abolição, 3, Centro 62790-970 Redenção, CE, Brazil
| | - Aline Caroline S Santos
- Oswaldo Cruz Pernambuco Foundation (Fiocruz/PE), Department of Immunology, Av. Prof. Moraes Rego, 1235, Cidade Universitária 50670-901 Recife, PE, Brazil
| | - Valéria R A Pereira
- Oswaldo Cruz Pernambuco Foundation (Fiocruz/PE), Department of Immunology, Av. Prof. Moraes Rego, 1235, Cidade Universitária 50670-901 Recife, PE, Brazil
| | - Maria Carmo A DE Lima
- Federal University of Pernambuco (UFPE), Department of Antibiotics, Av. Prof. Moraes Rego, 1235, Cidade Universitária, 50670-901 Recife, PE, Brazil
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Exploring the HSA/DNA/lung cancer cells binding behavior of p-Synephrine, a naturally occurring phenyl ethanol amine with anti-adipogenic activity: multi spectroscopic, molecular dynamic and cellular approaches. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Gordon AT, Hosten EC, Ogunlaja AS. Cu(II)-Catalysed Hydrocarboxylation of Imines Utilizing CO 2 to Synthesize α-Unsaturated Aminocarboxylic Acids. Pharmaceuticals (Basel) 2022; 15:ph15101240. [PMID: 36297352 PMCID: PMC9610938 DOI: 10.3390/ph15101240] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 09/30/2022] [Accepted: 10/02/2022] [Indexed: 11/07/2022] Open
Abstract
Here, we report the Cu(II)-photocatalysed hydrocarboxylation of imines (C=N) from a series of synthesized Schiff Base derivatives, namely (E)-1-(4-((4-methylbenzylidene)amino)phenyl)ethanone, (E)-1-(3-((5-bromo-2-hydroxybenzylidene)amino)phenyl)ethanone, (E)-4-((5-bromo-2-hydroxybenzylidene)amino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one, and (E)-1,5-dimethyl-4-((4-methylbenzylidene)amino)-2-phenyl-1H-pyrazol-3(2H)-one, with carbon dioxide (CO2) to generate disubstituted amino acids. Under mild conditions (atmospheric pressure of CO2, room temperature, and 30 W Blue LED light), good to excellent yields confirming the formation of substituted amino acid unsaturated acid derivatives were obtained. Single crystal X-ray diffraction (SC-XRD) and UV-Vis diffuse reflectance spectroscopy (UV-Vis-DRS) confirmed the square pyramidal geometry of the Cu(II) photocatalyst. Docking and DFT calculations of the substituted amino acid unsaturated acid derivatives showed their potential as antimicrobial molecules.
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Synthesis and Evaluation of Antiproliferative Activity, Topoisomerase IIα Inhibition, DNA Binding and Non-Clinical Toxicity of New Acridine-Thiosemicarbazone Derivatives. Pharmaceuticals (Basel) 2022; 15:ph15091098. [PMID: 36145320 PMCID: PMC9506480 DOI: 10.3390/ph15091098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/16/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
In this study, we report the synthesis of twenty new acridine–thiosemicarbazone derivatives and their antiproliferative activities. Mechanisms of action such as the inhibition of topoisomerase IIα and the interaction with DNA have been studied for some of the most active derivatives by means of both in silico and in vitro methods, and evaluations of the non-clinical toxicities (in vivo) in mice. In general, the compounds showed greater cytotoxicity against B16-F10 cells, with the highest potency for DL-08 (IC50 = 14.79 µM). Derivatives DL-01 (77%), DL-07 (74%) and DL-08 (79%) showed interesting inhibition of topoisomerase IIα when compared to amsacrine, at 100 µM. In silico studies proposed the way of bonding of these compounds and a possible stereoelectronic reason for the absence of enzymatic activity for CL-07 and DL-06. Interactions with DNA presented different spectroscopic effects and indicate that the compound CL-07 has higher affinity for DNA (Kb = 4.75 × 104 M−1; Ksv = 2.6 × 103 M−1). In addition, compounds selected for non-clinical toxicity testing did not show serious signs of toxicity at the dose of 2000 mg/kg in mice; cytotoxic tests performed on leukemic cells (K-562) and its resistant form (K-562 Lucena 1) identified moderate potency for DL-01 and DL-08, with IC50 between 11.45 and 17.32 µM.
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Zhao D, Liu Y, Li Y, Chen Y. A green synthesis and antibacterial activity of ferrocene-based thiazole derivatives in choline chloride/glycerol eutectic solvent. RSC Adv 2022; 12:22054-22059. [PMID: 36043099 PMCID: PMC9362733 DOI: 10.1039/d2ra04587g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 08/02/2022] [Indexed: 12/02/2022] Open
Abstract
In this work, a green Hantzsch synthesis of 4-ferrocenylthiazole derivatives has been accomplished successfully. The Hantzsch reaction between bromoacetylferrocene and various aryl thioureas, 1-alkylindole-3- or 9-alkylcarbazole-3-carbothioamides proceeded efficiently in a deep eutectic solvent (DES) that is, choline chloride/glycerol (ChCl/Gly) (1 : 2 molar ratio) at 80 °C, avoiding the use of common volatile organic solvents. Moreover, the DES media could be reused up to three times without any appreciable decrease in the yield. The synthetic strategy has the attractive features such as mild and environmentally benign reaction conditions, experimental simplicity, easy work-up procedure and good yields. Subsequently, a preliminary screening for in vitro antibacterial activities of all these newly-synthesized compounds revealed that the halo-substituted (F, Cl, Br) compounds 3f-h showed significant antibacterial activities against Gram (+) bacterial B. subtilis and Gram (-) E. coli, among which the fluoro-substituted 3f possessed the best activity with the MIC value of 7.8125 μg mL-1, being higher than the reference drug ciprofoxacin (15.625 μg mL-1).
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Affiliation(s)
- Di Zhao
- College of Chemistry and Chemical Engineering, Bohai University Jinzhou 121013 China
| | - Yanying Liu
- Research Institute of Jinzhou Petrochemical Company Jinzhou 121013 China
| | - Yang Li
- College of Chemistry and Chemical Engineering, Bohai University Jinzhou 121013 China
| | - Yu Chen
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University Shenyang 110016 China
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Chaudhary S, Kumar P, Kaushik M. Exploring the interaction of guanidine ligands Amiloride, Rimeporide and Cariporide with DNA for understanding their role as inhibitors of Na +/H + exchangers (NHEs): A spectroscopic and molecular docking investigation. Int J Biol Macromol 2022; 213:834-844. [PMID: 35675859 DOI: 10.1016/j.ijbiomac.2022.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/26/2022] [Accepted: 06/02/2022] [Indexed: 11/05/2022]
Abstract
The inhibition of Na+/H+ Exchangers (NHEs) has shown efficacy in the pathology of several diseases like tumors, cardiovascular, and neurological disorders. The role of guanidine ligands such as amiloride, cariporide, and rimeporide as NHE inhibitors is very well documented but their interaction studies with genomic DNA are still unexplored. In this study, a combination of various biophysical and molecular docking studies was employed to investigate their binding aspects.UV-Visible, fluorescence, and circular dichroism (CD) studies indicated that guanidine ligands bind to the grooves of Calf Thymus DNA (ctDNA). Fluorescence titration studies depict that amiloride binds to ctDNA with a binding constant in the order of 102 M-1 and free energy change (ΔG0) of -14.05 KJ mol-1. Competitive fluorescence studies indicated the minor groove binding property of amiloride, whereas major groove binding mode was deduced for rimeporide and cariporide. Molecular docking studies were also found to be in accordance with the experimental results, revealing the information about the binding energy of the guanidine ligand-ctDNA complex. The docked structures depicted binding energy of -6.4 kcal mol-1 for amiloride and - 6.6 kcal mol-1 for rimeporide and cariporide. Such physicochemical studies of DNA-ligand interactions may facilitate the understanding of the mechanisms of NHE inhibition.
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Affiliation(s)
- Swati Chaudhary
- Department of Applied Sciences, Maharaja Surajmal Institute of Technology, GGSIP University, New Delhi 110058, India
| | - Pankaj Kumar
- Department of Chemistry, University of Delhi, Delhi 110007, India; Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi 110007, India
| | - Mahima Kaushik
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi 110007, India.
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Alves JEF, Lucena MLC, de Souza Lucena AE, das Merces AAD, de Azevedo RDS, Sousa GLS, de Moura RO, Alves de Lima MDC, de Carvalho Júnior LB, de Almeida SMV. A simple method for obtaining human albumin and its use for in vitro interaction assays with indole-thiazole and indole-thiazolidinone derivatives. Int J Biol Macromol 2021; 192:126-137. [PMID: 34562539 DOI: 10.1016/j.ijbiomac.2021.09.109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/15/2021] [Accepted: 09/17/2021] [Indexed: 12/20/2022]
Abstract
This work aimed to develop a simple and low-cost method to obtain human serum albumin (HSA) and its consequent application for in vitro drug interaction assays. The HSA was purified by classic principles of plasma precipitation and thermocoagulation, using a multiple-stage fractionation. The quality of the final product was assessed by electrophoresis, protein dosage by the Lowry method and the pharmacopeial thermal stability. At the end, an isotonic solution of HSA with a total protein concentration of 2.7 mg·mL-1 was obtained, which was visualized as a single band corresponding to the molecular weight of 66 kDa. After the thermal stability test, there was no indication of turbidity or color change of the solution. Finally, the HSA was useful for interaction assays with indole-thiazole and indole-thiazolidinone derivatives through UV-vis absorption and fluorescence spectroscopic studies, as well as by docking molecular analysis. Derivatives quenched the intrinsic fluorescence of HSA, disrupted the tryptophan residues microenvironment, and probably bind at Sudlow's site I. Therefore, the simplified methodology developed in this work proved to be effective in obtaining HSA that can be applied to research goals including drug interaction assays.
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Affiliation(s)
| | | | | | | | - Rafael David Souto de Azevedo
- Laboratório de Biologia Molecular, Universidade de Pernambuco (UPE), Multicampi Garanhuns, Garanhuns, PE 55290-000, Brazil
| | - Gleyton Leonel Silva Sousa
- Programa de Doutorado em Química, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23897-000, Brazil
| | - Ricardo Olimpio de Moura
- Departamento de Ciências Biológicas e da Saúde, Universidade Estadual da Paraíba, João Pessoa, PB 58429-500, Brazil
| | - Maria do Carmo Alves de Lima
- Laboratório de Química e Inovação Terapêutica (LQIT) - Departamento de Antibióticos, Universidade Federal de Pernambuco, Recife, PE 50670-901, Brazil
| | | | - Sinara Mônica Vitalino de Almeida
- Laboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, Recife, PE 50670-901, Brazil; Laboratório de Biologia Molecular, Universidade de Pernambuco (UPE), Multicampi Garanhuns, Garanhuns, PE 55290-000, Brazil.
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Mostovaya O, Padnya P, Shiabiev I, Mukhametzyanov T, Stoikov I. PAMAM-calix-dendrimers: Synthesis and Thiacalixarene Conformation Effect on DNA Binding. Int J Mol Sci 2021; 22:ijms222111901. [PMID: 34769329 PMCID: PMC8585033 DOI: 10.3390/ijms222111901] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 10/29/2021] [Accepted: 10/30/2021] [Indexed: 12/16/2022] Open
Abstract
A convenient method for the synthesis of the first generation PAMAM dendrimers based on the thiacalix[4]arene has been developed for the first time. Three new PAMAM-calix-dendrimers with the macrocyclic core in cone, partial cone, and 1,3-alternate conformations were obtained with high yields. The interaction of the obtained compounds with salmon sperm DNA resulted in the formation of the associates of the size up to 200 nm, as shown by the UV-Vis spectroscopy, DLS, and TEM. It was demonstrated by the CD method that the structure of the DNA did not undergo significant changes upon binding. The PAMAM-calix-dendrimer based on the macrocycle in cone conformation stabilized DNA and prevented its degradation.
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Affiliation(s)
| | - Pavel Padnya
- Correspondence: (P.P.); (I.S.); Tel.: +7-843-233-7241 (I.S.)
| | | | | | - Ivan Stoikov
- Correspondence: (P.P.); (I.S.); Tel.: +7-843-233-7241 (I.S.)
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Synthesis under microwaves irradiation, structure elucidation, docking study for inhibiting COVID-19 and DFT calculations of novel azoles incorporated indole moiety. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Shirani MA, Maleki MH, Asadi P, Dinari M. Benzothiazolopyridine compounds: Facial synthesis, characterization, and molecular docking study on estrogen and progesterone receptors. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130792] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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