101
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Donthiboina K, Anchi P, Gurram S, Sai Mani G, Lakshmi Uppu J, Godugu C, Shankaraiah N, Kamal A. Synthesis and biological evaluation of substituted N-(2-(1H-benzo[d]imidazol-2-yl)phenyl)cinnamides as tubulin polymerization inhibitors. Bioorg Chem 2020; 103:104191. [PMID: 32891862 DOI: 10.1016/j.bioorg.2020.104191] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 01/24/2020] [Revised: 07/15/2020] [Accepted: 08/17/2020] [Indexed: 01/23/2023]
Abstract
A new series of N-(2-(1H-benzo[d]imidazol-2-yl)phenyl) cinnamides was prepared and evaluated for their in vitro cytotoxic activity using various cancer cell lines viz. A549 (human non-small cell lung cancer), MDA-MB-231 (human triple negative breast cancer), B16-F10 (mouse melanoma), BT-474 (human breast cancer), and 4 T1 (mouse triple negative breast cancer). In the series of tested compounds, 12h showed potent cytotoxic activity against non-small cell lung cancer cell line with IC50 value of 0.29 ± 0.02 µM. The cytoxicity of most potent compound 12h was also tested on NRK-52E (normal rat kidney epithelial cell line) and showed less cytotoxicity compared to cancer cells. Tubulin polymerization assay indicated that the compound 12h was able to impede the cell division by inhibiting tubulin polymerization. Moreover, molecular docking study also suggested the binding of 12h at the colchicine-binding site of the tubulin protein. Cell cycle analysis revealed that the compound 12h arrests G2/M phase. In addition, 12h induced apoptosis in A549 cell lines was evaluated by various staining studies like acridine orange, DAPI, analysis of mitochondrial membrane potential, annexin V-FITC, and DCFDA assays.
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Affiliation(s)
- Kavitha Donthiboina
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Pratibha Anchi
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Sowmyasree Gurram
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Geeta Sai Mani
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Jaya Lakshmi Uppu
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Chandraiah Godugu
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Ahmed Kamal
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India; School of Pharmaceutical Education and Research (SPER), Jamia Hamdard, New Delhi 110062, India.
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102
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Acar Çevik U, Sağlık BN, Osmaniye D, Levent S, Kaya Çavuşoğlu B, Karaduman AB, Atlıd Ö, Atlı Eklioğlu Ö, Kaplancıklı ZA. Synthesis, anticancer evaluation and molecular docking studies of new benzimidazole- 1,3,4-oxadiazole derivatives as human topoisomerase types I poison. J Enzyme Inhib Med Chem 2020; 35:1657-1673. [PMID: 32811204 PMCID: PMC7470102 DOI: 10.1080/14756366.2020.1806831] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this study, some benzimidazole-oxadiazole derivatives were synthesised and tested for their in vitro anticancer activities on five cancer cell lines, including HeLa, MCF7, A549, HepG2 and C6. Their structures were elucidated by IR, 1H-NMR, 13C-NMR, 2 D-NMR and HRMS spectroscopic methods. Among all screened compounds; 5a, 5b, 5d, 5e, 5k, 5l, 5n and 5o exhibited potent selective cytotoxic activities against various tested cancer cell lines. Especially, compounds 5l and 5n exhibited the most antiproliferative activity than Hoechst 33342 and doxorubicin against HeLa cell line, with IC50 of 0.224 ± 0.011 µM and 0.205 ± 0.010 µM, respectively. Furthermore, these potent lead cytotoxic agents were evaluated in terms of their inhibition potency against Topoisomerase I and it was determined that selected compounds inhibited the Topoisomerase I. Docking studies were performed and probable interactions in the DNA-Topo I enzyme complex was determined.
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Affiliation(s)
- Ulviye Acar Çevik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey.,Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Begüm Nurpelin Sağlık
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey.,Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Derya Osmaniye
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey.,Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Serkan Levent
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey.,Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Betül Kaya Çavuşoğlu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Zonguldak Bülent Ecevit University, Zonguldak, Turkey
| | - Abdullah Burak Karaduman
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Özlem Atlıd
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Özlem Atlı Eklioğlu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey.,Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Zafer Asım Kaplancıklı
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
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103
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Miyajima A, Kuroda Y, Sakemi-Hoshikawa K, Usami M, Mitsunaga K, Irie T, Ohno Y, Sunouchi M. Inhibitory and inductive effects of 4- or 5-methyl-2-mercapto benzimidazole, thyrotoxic and hepatotoxic rubber antioxidants, on several forms of cytochrome P450 in primary cultured rat and human hepatocytes. Toxicol Rep 2020; 7:979-985. [PMID: 32874920 PMCID: PMC7451710 DOI: 10.1016/j.toxrep.2020.08.003] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 07/28/2020] [Accepted: 08/03/2020] [Indexed: 10/31/2022] Open
Abstract
Effects of 4-methyl-2-mercaptobenzimidazole (4-MeMBI) and 5-methyl-2- mercaptobenzimidazole (5-MeMBI) on cytochrome P450 (CYP) activity were examined in primary cultured rat hepatocytes. Hepatocytes from male Wistar rats were cultured in the presence of 4-MeMBI or 5-MeMBI (0-400 μM), and the activity of CYPs 3A2/4 (48 and 96 h) and 1A1/2 (48 h) was determined by measuring the activity of testosterone 6β-hydroxylation and 7-ethoxyresorufin O-deethylation, respectively. As a result, 4-MeMBI and 5-MeMBI (≥12.5 μM) inhibited CYP3A2 activity. On the other hand, 4-MeMBI (≥25 μM) and 5-MeMBI (≥100 μM) induced CYP1A1/2 activity, being consistent with the previous in vivo results. In a comparative metabolism study using primary cultured human hepatocytes from two Caucasian donors, 4-MeMBI and 5-MeMBI induced the activity of CYPs 3A4 and 1A1/2 with individual variability. It was concluded from these results that 4-MeMBI, 5-MeMBI and MBI caused inhibition of CYP3A2 activity in primary cultured rat hepatocytes, suggesting their potential for metabolic drug-drug interactions. Primary cultured rat and human hepatocytes were considered to be useful for the evaluation of effects of the benzimidazole compounds on their inducibility and inhibitory activities of cytochrome P450 forms.
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Key Words
- 3-MC, 3-methylcholanthrene
- 4(5)-MeMBI, 4(or 5)-methyl-2-mercaptobenzimidazole
- 4-MeMBI, 4-methyl-2-mercaptobenzimidazole
- 5-MeMBI, 5-methyl-2-mercaptobenzimidazole
- AhR, aryl hydrocarbon receptor
- Benzimidazole
- CYP, cytochrome P450
- Cytochrome P450
- DMSO, dimethyl sulfoxide
- Drug-metabolizing activity
- EROD, 7-ethoxyresorufin O-deethylation
- Hepatocyte
- MBI, 2-mercaptobenzimidazole
- PXR, pregnane X receptor
- Primary culture
- T6βH, testosterone 6β-hydroxylation
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Affiliation(s)
- Atsuko Miyajima
- Division of Medical Devices, National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki, Kanagawa, 210-9501, Japan
| | - Yukie Kuroda
- Division of Pharmacology, National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki, Kanagawa, 210-9501, Japan
| | - Kazue Sakemi-Hoshikawa
- Division of Pharmacology, National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki, Kanagawa, 210-9501, Japan
| | - Makoto Usami
- Division of Pharmacology, National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki, Kanagawa, 210-9501, Japan.,Graduate School of Veterinary Medicine, Azabu University, 1-17-1, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Katsuyoshi Mitsunaga
- School of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Tomohiko Irie
- Division of Pharmacology, National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki, Kanagawa, 210-9501, Japan
| | - Yasuo Ohno
- Division of Pharmacology, National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki, Kanagawa, 210-9501, Japan.,Kihara Memorial Yokohama Foundation for the Advancement of Life Sciences, 1-6 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan
| | - Momoko Sunouchi
- Division of Pharmacology, National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki, Kanagawa, 210-9501, Japan
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104
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Beltran-Hortelano I, Alcolea V, Font M, Pérez-Silanes S. The role of imidazole and benzimidazole heterocycles in Chagas disease: A review. Eur J Med Chem 2020; 206:112692. [PMID: 32818869 DOI: 10.1016/j.ejmech.2020.112692] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/21/2020] [Accepted: 07/24/2020] [Indexed: 02/02/2023]
Abstract
The haemoflagellate protozoan Trypanosoma cruzi (T. cruzi) is the causative agent of Chagas disease (CD), a potentially life-threatening disease. Little by little, remarkable progress has been achieved against CD, although it is still not enough. In the absence of effective chemotherapy, many research groups, organizations and pharmaceutical companies have focused their efforts on the search for compounds that could become viable drugs against CD. Within the wide variety of reported derivatives, this review summarizes and provides a global vision of the situation of those compounds that include broadly studied heterocycles in their structures due to their applications in medicinal chemistry: imidazole and benzimidazole rings. Therefore, the intention of this work is to present a compilation, as much as possible, of all the reported information, regarding these imidazole and benzimidazole derivatives against T. cruzi, as a starting point for future researchers in this field.
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105
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Son DS, Lee ES, Adunyah SE. The Antitumor Potentials of Benzimidazole Anthelmintics as Repurposing Drugs. Immune Netw 2020; 20:e29. [PMID: 32895616 PMCID: PMC7458798 DOI: 10.4110/in.2020.20.e29] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/17/2020] [Accepted: 07/21/2020] [Indexed: 02/06/2023] Open
Abstract
The development of refractory tumor cells limits therapeutic efficacy in cancer by activating mechanisms that promote cellular proliferation, migration, invasion, metastasis, and survival. Benzimidazole anthelmintics have broad-spectrum action to remove parasites both in human and veterinary medicine. In addition to being antiparasitic agents, benzimidazole anthelmintics are known to exert anticancer activities, such as the disruption of microtubule polymerization, the induction of apoptosis, cell cycle (G2/M) arrest, anti-angiogenesis, and blockage of glucose transport. These antitumorigenic effects even extend to cancer cells resistant to approved therapies and when in combination with conventional therapeutics, enhance anticancer efficacy and hold promise as adjuvants. Above all, these anthelmintics may offer a broad, safe spectrum to treat cancer, as demonstrated by their long history of use as antiparasitic agents. The present review summarizes central literature regarding the anticancer effects of benzimidazole anthelmintics, including albendazole, parbendazole, fenbendazole, mebendazole, oxibendazole, oxfendazole, ricobendazole, and flubendazole in cancer cell lines, animal tumor models, and clinical trials. This review provides valuable information on how to improve the quality of life in patients with cancers by increasing the treatment options and decreasing side effects from conventional therapy.
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Affiliation(s)
- Deok-Soo Son
- Department of Biochemistry, Cancer Biology, Neurosciences and Pharmacology, School of Medicine, Meharry Medical College, Nashville, TN 37208, USA
| | - Eun-Sook Lee
- Department of Pharmaceutical Sciences, College of Pharmacy, Florida A&M University, Tallahassee, FL 32301, USA
| | - Samuel E Adunyah
- Department of Biochemistry, Cancer Biology, Neurosciences and Pharmacology, School of Medicine, Meharry Medical College, Nashville, TN 37208, USA
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106
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Muñoz-Patiño N, Sánchez-Eguía BN, Araiza-Olivera D, Flores-Alamo M, Hernández-Ortega S, Martínez-Otero D, Castillo I. Synthesis, structure, and biological activity of bis( benzimidazole)amino thio- and selenoether nickel complexes. J Inorg Biochem 2020; 211:111198. [PMID: 32801056 DOI: 10.1016/j.jinorgbio.2020.111198] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 06/25/2020] [Accepted: 07/13/2020] [Indexed: 12/28/2022]
Abstract
Four new nickel (II) complexes with bis(benzimidazole)thio- and selenoether-based ligands have been synthesized and characterized in the solid state by elemental analysis, IR, magnetic susceptibility and X-ray crystallography, and in solution by FAB+ mass spectrometry, UV-vis spectroscopy and cyclic voltammetry. Single-crystal X-ray diffraction analysis of the compounds revealed octahedral geometries for all nickel centers. Three of the four complexes are dimers with chloride bridges between the two Ni(II) ions. However, in solution all complexes have a monomeric formulation, based on mass spectrometry and osmometry measurements. The complexes were also screened for their cytotoxic activity on human cell lines (HeLa, SK-LU-1 and HEK-293), and compared with a related Cu(II) complex.
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Affiliation(s)
- Natalia Muñoz-Patiño
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, CU, 04510, Mexico
| | - Brenda N Sánchez-Eguía
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, CU, 04510, Mexico
| | - Daniela Araiza-Olivera
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, CU, 04510, Mexico
| | - Marcos Flores-Alamo
- Facultad de Química, División de Estudios de Posgrado, Universidad Nacional Autónoma de México, Circuito Exterior, CU, 04510, Mexico
| | - Simón Hernández-Ortega
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, CU, 04510, Mexico
| | - Diego Martínez-Otero
- Centro Conjunto de Investigación en Química Sustentable, UAEM-UNAM, 50200, Toluca, Estado de México, Mexico
| | - Ivan Castillo
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, CU, 04510, Mexico.
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Marinescu M, Cinteză LO, Marton GI, Chifiriuc MC, Popa M, Stănculescu I, Zălaru CM, Stavarache CE. Synthesis, density functional theory study and in vitro antimicrobial evaluation of new benzimidazole Mannich bases. BMC Chem 2020; 14:45. [PMID: 32724899 PMCID: PMC7382033 DOI: 10.1186/s13065-020-00697-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 07/10/2020] [Indexed: 12/18/2022] Open
Abstract
The tri-component synthesis of novel chiral benzimidazole Mannich bases, by reaction between benzimidazole, aqueous 30% formaldehyde and an amine, the biological evaluation and DFT studies of the new compounds are reported here. The 1H-NMR, 13C-NMR, FTIR spectra and elemental analysis confirm the structures of the new compounds. All synthesized compounds were screened by qualitative and quantitative methods for their in vitro antibacterial activity against 4 bacterial strains. DFT studies were accomplished using GAMESS 2012 software and HOMO-LUMO analysis allowed the calculation of electronic and structural parameters of the chiral Mannich bases. The geometry of 1-methylpiperazine, the cumulated Mullikan atomic charges of the two heteroatoms and of the methyl, and the value of the global electrophilicity index (ω = 0.0527) of the M-1 molecule is correlated with its good antimicrobial activity. It was found that the presence of saturated heterocycles from the amine molecule, 1-methyl piperazine and morpholine, respectively, contributes to an increased biological activity, compared to aromatic amino analogs, diphenylamino-, 4-nitroamino- and 4-aminobenzoic acid. The planarity of the molecules, specific bond lengths and localization of HOMO-LUMO orbitals is responsible for the best biological activities of the compounds.
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Affiliation(s)
- Maria Marinescu
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, Bucharest, 050663 Romania
| | - Ludmila Otilia Cinteză
- Department of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bucharest, 030018 Romania
| | - George Iuliu Marton
- Faculty of Applied Chemistry and Materials Science, University "Politehnica" of Bucharest, 1-7 Polizu, 011061 Bucharest, Romania
| | - Mariana-Carmen Chifiriuc
- Department of Botanic-Microbiology, Faculty of Biology, University of Bucharest, 1-3 Aleea Portocalilor, 60101 Bucharest, Romania.,Research Institute of the University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania
| | - Marcela Popa
- Department of Botanic-Microbiology, Faculty of Biology, University of Bucharest, 1-3 Aleea Portocalilor, 60101 Bucharest, Romania.,Research Institute of the University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania
| | - Ioana Stănculescu
- Department of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bucharest, 030018 Romania
| | - Christina-Marie Zălaru
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, Bucharest, 050663 Romania
| | - Cristina-Elena Stavarache
- Institute of Organic Chemistry "C.D. Nenitzescu" of the Romanian Academy, 202B Splaiul Independentei, 060023 Bucharest, Romania
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108
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Suresh AJ, Nandini S, Sangeetha K, Dhivya LS, Surya PR. Design, Synthesis and invitro biological evaluation of Pyridine,thiadazole, Benzimidazole and Acetyl thiophneAnalogues as Anti tubercular Agents Targeting enzyme InhA. Curr Comput Aided Drug Des 2020; 17:773-784. [PMID: 32713342 DOI: 10.2174/1573409916666200724152827] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 05/08/2020] [Accepted: 06/28/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Tuberculosis, is a chronic infectious disease, affects one third of the global population. Emergence of Multi-resistant (MDR) strains and high susceptibility of human immunodeficiency virus (HIV) infected persons to the disease forced to develop novel anti-tuberculosis agents and preferably have a novel mechanism of action as to avoid crossresistant with other agents. Literature survey evidences that, Pyridine, Thiadiazole , Benzimidazole; and Acetyl thiophene derivatives exhibit various pharmacological activities, including anti-mycobacterial activity. METHODS Thus, a series of Pyridine, Thiadiazole, Benzimidazole; and Acetyl thiophene based molecules were designed and docked against crucial mtb enzyme target InhA (Enoyl Acyl Carrier Protein Reductase) Enzyme. The docked molecules were screened against good docking-score and multiple interactions and opted for synthesis. Synthesized molecules were re crystallized to obtain the purity. All the purified compounds were characterized by various spectral analyses and evaluated for anti- mycobacterial activity against tuberculosis H37RV strain by Microplate Alamar Blue Assay (MABA) method. RESULTS The experimental results shown that schiff base of Pyridine (Compounds 'd' ) and Benzimidazole derivatives (Compounds 'i' ) possesses good anti-tubercular activity with a MIC below 1.6 μg /mL. Further compound 'e' of benzimdazole derivative showed good anti tubercular activity with an MIC below 6.25 μg /mL. Whereas 2 - acetyl thiopene compounds exhibited moderate anti tubercular activity at below 50μg/mL. CONCLUSION The comparative in vitro and molecular docking study analysis reveals that, compared to chalcones of Acetyl thiophne derivatives, Pyridine, thiadazole and Benzimidazole based schiff bases exhibited best anti tubercular activity.
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Affiliation(s)
- Ayyadurai J Suresh
- Department of Pharmaceutical Chemistry, College of Pharmacy, Madras Medical College, Affiliated to "The Tamil Nadu Dr. M.G.R Medical University" Chennai - 600 003, Tamil, Nadu. India
| | - Sivashankar Nandini
- Department of Pharmaceutical Chemistry, College of Pharmacy, Madras Medical College, Affiliated to "The Tamil Nadu Dr. M.G.R Medical University" Chennai - 600 003, Tamil, Nadu. India
| | - Krishnanmurthy Sangeetha
- Department of Pharmaceutical Chemistry, College of Pharmacy, Madras Medical College, Affiliated to "The Tamil Nadu Dr. M.G.R Medical University" Chennai - 600 003, Tamil, Nadu. India
| | - Loganathan S Dhivya
- Department of Pharmaceutical Chemistry, College of Pharmacy, Madras Medical College, Affiliated to "The Tamil Nadu Dr. M.G.R Medical University" Chennai - 600 003, Tamil, Nadu. India
| | - Parakkot R Surya
- Department of Pharmaceutical Chemistry, College of Pharmacy, Madras Medical College, Affiliated to "The Tamil Nadu Dr. M.G.R Medical University" Chennai - 600 003, Tamil, Nadu. India
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109
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Srour AM, Ahmed NS, Abd El-Karim SS, Anwar MM, El-Hallouty SM. Design, synthesis, biological evaluation, QSAR analysis and molecular modelling of new thiazol- benzimidazoles as EGFR inhibitors. Bioorg Med Chem 2020; 28:115657. [PMID: 32828424 DOI: 10.1016/j.bmc.2020.115657] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 06/26/2020] [Accepted: 07/15/2020] [Indexed: 02/06/2023]
Abstract
Heterocyclic rings such as thiazole and benzimidazole are considered as privileged structures, since they constitute several FDA-approved drugs for cancer treatment. In this work, a new set of 2-(2-(substituted) hydrazinyl)-4-(1-methyl-1H-benzo[d]imidazol-2-yl) thiazoles 4a-q were designed as epidermal growth factor receptor (EGFR) inhibitors and synthesized using concise synthetic methods. The new target compounds have been evaluated in vitro for their suppression activity against EGFR TK. Compounds 4n, 4h, 4i, 4a and 4d exhibited significant potency in comparison with erlotinib which served as a reference drug (IC50, 71.67-152.59 nM; IC50 erlotinib, 152.59 nM). Furthermore, MTT assay revealed that compounds 4j, 4a, 4f, 4h, 4n produced the most promising cytotoxic potency against the human breast cancer cell line (MCF-7) (IC50; 5.96-11.91 µM; IC50 erlotinib; 4.15 µM). Compound 4a showed promising activity as EGFR TK inhibitor as well as anti-breast cancer agent. In addition, 4a induced apoptotic effect and cell cycle arrest at G2/M phase preventing the mitotic cycle in MCF-7 cells. Moreover, 4a upregulated the oncogenic parameters; caspase-3, p53, Bax/Bcl-2 as well as it inhibited the level of PARP-1 enzyme. QSAR study was carried out for the new derivatives and it revealed the goodness of the models. Furthermore, molecular docking studies represented the binding modes of the promising compounds in the active pocket of EGFR.
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Affiliation(s)
- Aladdin M Srour
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Cairo 12622, Egypt
| | - Nesreen S Ahmed
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Cairo 12622, Egypt
| | - Somaia S Abd El-Karim
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Cairo 12622, Egypt.
| | - Manal M Anwar
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Cairo 12622, Egypt.
| | - Salwa M El-Hallouty
- Drug Bioassay-Cell Culture Laboratory, Department of Pharmacognosy, National Research Centre, Dokki, Giza 12622, Egypt
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Di Fusco D, Stolfi C, Di Grazia A, Dinallo V, Laudisi F, Marafini I, Colantoni A, Monteleone I, Monteleone G. Albendazole negatively regulates keratinocyte proliferation. Clin Sci (Lond) 2020; 134:907-20. [PMID: 32236445 DOI: 10.1042/CS20191215] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/24/2020] [Accepted: 04/01/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Increased keratinocyte proliferation occurs in the skin of psoriatic patients and is supposed to play a role in the pathogenesis of this disorder. Compounds interfering with keratinocyte proliferation could be useful in the management of psoriatic patients. AIM To investigate whether albendazole, an anti-helmintic drug that regulates epithelial cell function in various systems, inhibits keratinocyte proliferation in models of psoriasis. METHODS Aldara-treated mice received daily topical application of albendazole. Keratinocyte proliferation and keratin (K) 6 and K16 expression were evaluated by immunohistochemistry and Western blotting and inflammatory cells/mediators were analysed by immunohistochemistry and real-time PCR. In human keratinocytes (HEKa and HaCaT) treated with albendazole, cell cycle and proliferation, keratins and cell cycle-associated factors were evaluated by flow cytometry, colorimetric assay and Western blotting respectively. RESULTS Aldara-treated mice given albendazole exhibited reduced epidermal thickness, decreased number of proliferating keratinocytes and K6/K16 expression. Reduction of CD3- and Ly6G-positive cells in the skin of albendazole-treated mice associated with inhibition of IL-6, TNF-α, IL-1β, IL-17A, IL-36, CCL17, CXCL1, CXCL2 and CXCL5 expression. Treatment of keratinocytes with albendazole reduced K6/K16 expression and reversibly inhibited cell growth by promoting accumulation of cells in S-phase. This phenomenon was accompanied by down-regulation of CDC25A, a phosphatase regulating progression of cell cycle through S-phase, and PKR-dependent hyper-phosphorylation of eIF2α, an inhibitor of CDC25 translation. In Aldara-treated mice, albendazole activated PKR, enhanced eIF2α phosphorylation and reduced CDC25A expression. CONCLUSIONS Data show that albendazole inhibits keratinocyte proliferation and exerts therapeutic effect in a murine model of psoriasis.
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Baltrušis P, Komáromyová M, Várady M, von Samson-Himmelstjerna G, Höglund J. Assessment of the F200Y mutation frequency in the β tubulin gene of Haemonchus contortus following the exposure to a discriminating concentration of thiabendazole in the egg hatch test. Exp Parasitol 2020; 217:107957. [PMID: 32687847 DOI: 10.1016/j.exppara.2020.107957] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/24/2020] [Accepted: 07/13/2020] [Indexed: 02/01/2023]
Abstract
The ruminant livestock production sector is under threat due to the infections with gastrointestinal nematode parasites and the subsequent development of anthelmintic resistance. One of most common and pathogenic species in small ruminants is Haemonchus contortus. The ability to control the infections with this and other gastrointestinal nematodes relies heavily on the use of anthelmintic drugs. Although resistance to all major classes of anthelmintics has been shown in H. contortus, the precise mechanism of resistance acquisition is only known for benzimidazoles. F200Y (TAC) is a common point mutation in the isotype 1 β tubulin gene which is associated with an effective increase in the resistance towards benzimidazole drugs. Here, we show the utility of using this mutation as a marker in a droplet digital PCR assay to track how two H. contortus laboratory strains, characterized by different resistance levels, change with respect to this mutation, when subjected to increasing concentrations of thiabendazole. Additionally, we wanted to investigate whether exposure to a discriminating dose of thiabendazole in the egg hatch test resulted in the death of all H. contortus eggs with a susceptible genotype. We found the MHco5 strain to maintain an overall higher frequency of the F200Y mutation (80-100%) over all drug concentrations, whilst a steady, gradual increase from around 30%-60% was observed in the case of the MHco4 strain. This is further supported by the dose-response curves, displaying a much higher tolerance of the MHco5 strain (LD50 = 0.38 μg/ml) in comparison to the MHco4 strain (LD50 = 0.07 μg/ml) to the effects of thiabendazole. All things considered, we show that the F200Y mutation is still a viable and reliable marker for the detection and surveillance of benzimidazole drug resistance in H. contortus in Europe.
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Tan TK, Lim YAL, Chua KH, Chai HC, Low VL, Bathmanaban P, Affendi S, Wang D, Panchadcharam C. Characterization of benzimidazole resistance in Haemonchus contortus: integration of phenotypic, genotypic and proteomic approaches. Parasitol Res 2020; 119:2851-2862. [PMID: 32651637 DOI: 10.1007/s00436-020-06790-5] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 06/28/2020] [Indexed: 11/29/2022]
Abstract
The field strain of Haemonchus contortus has a long history of anthelmintic resistance. To understand this phenomenon, the benzimidazole resistance profile was characterized from the Malaysian field-resistant strain by integrating phenotypic, genotypic and proteomic approaches. The faecal egg count reduction test (FECRT) demonstrated that benzimidazole resistance was at a critical level in the studied strain. The primary resistance mechanism was attributed to F200Y mutation in the isotype 1 β-tubulin gene as revealed by AS-PCR and direct sequencing. Furthermore, the protein response of the resistant strain towards benzimidazole (i.e., albendazole) treatment was investigated via two-dimensional difference gel electrophoresis (2D-DIGE) and tandem liquid chromatography-mass spectrometry (LC-MS/MS). These investigations illustrated an up-regulation of antioxidant (i.e., ATP-binding region and heat-shock protein 90, superoxide dismutase) and metabolic (i.e., glutamate dehydrogenase) enzymes and down-regulation of glutathione S-transferase, malate dehydrogenase, and other structural and cytoskeletal proteins (i.e., actin, troponin T). Findings from this study are pivotal in updating the current knowledge on anthelmintic resistance and providing new insights into the defence mechanisms of resistant nematodes towards drug treatment.
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Affiliation(s)
- Tiong Kai Tan
- Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.
| | - Yvonne A L Lim
- Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia. .,Centre of Excellence for Research in AIDS (CERIA), University of Malaya, Kuala Lumpur, Malaysia.
| | - Kek Heng Chua
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Hwa Chia Chai
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Van Lun Low
- Tropical Infectious Diseases Research and Education Centre (TIDREC), University of Malaya, Kuala Lumpur, Malaysia
| | | | - Sarah Affendi
- Tropical Infectious Diseases Research and Education Centre (TIDREC), University of Malaya, Kuala Lumpur, Malaysia
| | - Daryi Wang
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
| | - Chandrawathani Panchadcharam
- Department of Veterinary Services, Ministry of Agriculture and Agro-Based Industry Malaysia, Federal Government Administrative Center, Putrajaya, Malaysia
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Arias-García R, Vera-Montenegro Y, Flores-Ramos M, Castillo R, Hernández-Campos A, Ibarra-Velarde F. Efficiency comparison of experimental fosfatriclaben with three commercial fasciolicides in experimentally infected sheep. Parasitol Res 2020; 119:2687-2693. [PMID: 32514648 DOI: 10.1007/s00436-020-06705-4] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 05/05/2020] [Indexed: 11/29/2022]
Abstract
In this work, we compare and evaluate the efficiency of fosfatriclaben with three commercial fasciolicides in experimentally infected sheep. Fosfatriclaben is a novel prodrug derived from triclabendazole; it is highly water-soluble with excellent aqueous stability at pH 7, properties that make it ideal for developing intramuscular pharmaceutical compositions in the form of solutions. In order to compare, 30 mixed breed sheep, previously diagnosed negative to fluke eggs, were infected with 200 metacercariae of Fasciola hepatica, twice. Five groups of six animals/each were formed for treatments. Group 1 (G1) was treated with closantel 5% injectable at 5 mg/kg subcutaneously, G2 with clorsulon at 2 mg/kg subcutaneously, G3 with triclabendazole at 12 mg/kg per os, G4 with fosfatriclaben at 6 mg/kg intramuscularly (dose equivalent to triclabendazole content), and G5 remained as the non-treated control. On day 110, fecal samples were examined to determine the percentage of egg reduction after treatment, and sheep were humanely euthanized. The livers were collected, the flukes were extracted, measured, and counted. Efficiency in egg reduction was of 86.8, 90.5, 98.4, and 97.3% for closantel, clorsulon, triclabendazole, and fosfatriclaben, respectively, and efficiency against flukes was of 96.2, 91.9, 99.4, and 95.7%, respectively. No statistical differences were found between treatments. It is concluded that fosfatriclaben at 6 mg/kg intramuscularly presented a high fasciolicide efficiency, similar to the best commercial fasciolicides, having advantage over its predecessor since it uses half of the dose required by triclabendazole to remove flukes in sheep under study.
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Affiliation(s)
- Rosa Arias-García
- Facultad de Medicina Veterinaria y Zootecnia, Departamento de Parasitología, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Yolanda Vera-Montenegro
- Facultad de Medicina Veterinaria y Zootecnia, Departamento de Parasitología, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Miguel Flores-Ramos
- Facultad de Medicina Veterinaria y Zootecnia, Departamento de Parasitología, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Rafael Castillo
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Alicia Hernández-Campos
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Froylán Ibarra-Velarde
- Facultad de Medicina Veterinaria y Zootecnia, Departamento de Parasitología, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México.
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Abdel-Motaal M, Almohawes K, Tantawy MA. Antimicrobial evaluation and docking study of some new substituted benzimidazole-2yl derivatives. Bioorg Chem 2020; 101:103972. [PMID: 32506017 DOI: 10.1016/j.bioorg.2020.103972] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 04/11/2020] [Accepted: 05/23/2020] [Indexed: 12/25/2022]
Abstract
Benzimidazoles incorporated biologically active heterocycles such as quinoline, triazine-3-thione, thiazole and thiadiazole, were synthesized utilizing 2-acetylbenzimidazole as a building block. The structures of the newly synthesized benzimidazoles were assured by their spectral data (IR, 1H NMR, 13C- NMR and MS spectra). Most of the synthesized candidates were screened for their in vitro antimicrobial activity against Staphylococcus aureus, Escherichia coli, Bacillus pumilus and antifungal activity against (Saccharomyces cerevisiae). As a result, 2-(2-(1-(1H-benzo[d]imidazol-2-yl)ethylidene)hydrazineyl)-5-(furan-2-yl)-1,3,4-thiadiazole (14) had the most potent inhibitory activity against all tested bacteria with no antifungal inhibition. Furthermore, to gain insight into the mode of action of the synthesized compounds as antibacterial agents, docking studies were performed for the synthesized compounds in order to evaluate their activity as anti-bacterial agents. Virtual screening of the most promising compounds was performed against two bacterial proteins (DNA gyrase subunit B, and penicillin binding protein 1a) that are known targets for some antibiotics.
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Affiliation(s)
- Marwa Abdel-Motaal
- Chemistry Department, College of Science, Qassim University, Qassim, Buraydah, Saudi Arabia; Chemistry Department, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt.
| | - Khozama Almohawes
- Chemistry Department, College of Science, Qassim University, Qassim, Buraydah, Saudi Arabia
| | - Mohamed A Tantawy
- Hormones Department, Medical Research Division, National Research Centre, Dokki, Giza, 12622, Egypt; Stem Cells Lab, Center of Excellence for Advanced Sciences, National Research Centre, Dokki, Giza 12622, Egypt
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115
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Aragón-Muriel A, Liscano-Martínez Y, Rufino-Felipe E, Morales-Morales D, Oñate-Garzón J, Polo-Cerón D. Synthesis, biological evaluation and model membrane studies on metal complexes containing aromatic N,O-chelate ligands. Heliyon 2020; 6:e04126. [PMID: 32548326 PMCID: PMC7286978 DOI: 10.1016/j.heliyon.2020.e04126] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/15/2020] [Accepted: 05/29/2020] [Indexed: 02/06/2023] Open
Abstract
Novel lanthanide (Ln) compounds [Ln(L)2]Cl.xH2O (Ln = La3+, Ce3+, Sm3+) containing aromatic N,O-chelate ligands [HL1 = 4-amino-2-(1H-benzimidazol-2-yl)phenol; HL2 = 5-amino-2-(1H-benzimidazol-2-yl)phenol] have been synthesized and structurally characterized by elemental analysis, NMR and IR spectroscopy, molar conductance measurements, and mass spectrometry (MS). The spectroscopic data suggested that the benzimidazolyl-phenol ligands act as N,O-chelate ligands through the iminic nitrogen and phenolic oxygen atoms. Elemental analysis indicated that lanthanide compounds were formed in a 1:2 stoichiometry (metal:ligand). In vitro biological evaluation was carried out using these complexes, exhibiting moderate cytotoxicity against six different human tumor cell lines (U251, human glioblastoma; HCT-15, colorectal carcinoma; MCF-7, breast epithelial adenocarcinoma; PC-3, prostate cancer; K562, myelogenous leukemia; SKLU-1, lung carcinoma) and lower toxicity against a non-cancerous cell line (COS-7, primate kidney). In addition, the antibacterial activity of the compounds was assessed against two gram-positive strains (Staphylococcus aureus ATCC 25923, Listeria monocytogenes ATCC 19115) and two gram-negative strains (Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27583) using the microdilution method. The results obtained show that the metal complexes exhibit higher biological activity than the free ligands, confirming a synergistic effect. Further benzimidazolyl-phenol derivatives were explored for the detection of bacteria using fluorescence imaging studies. Interestingly, the fluorescent properties of these compounds make them potential candidates to monitor the morphology of bacteria at different compound concentrations. Hence, the interaction of the ligand and complexes with model membranes mimicking those of bacteria was studied by using differential scanning calorimetry (DSC) and molecular dynamics (MD), showing that both compounds decreased the enthalpy of transition in two model membranes as the concentration of the compounds increased. In addition, the main transition temperature was slightly reduced as a result of these interactions.
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Affiliation(s)
- Alberto Aragón-Muriel
- Laboratorio de Investigación en Catálisis y Procesos (LICAP), Facultad de Ciencias Naturales y Exactas, Departamento de Química, Universidad del Valle, Cali 760001, Colombia
| | - Yamil Liscano-Martínez
- Grupo de Genética, Regeneración y Cáncer, Facultad de Ciencias Naturales y Exactas, Instituto de Biología, Universidad de Antioquia, Medellín 050010, Colombia
| | - Ernesto Rufino-Felipe
- Instituto de Química, Universidad Nacional Autónoma de México, Cd. Universitaria, Circuito Exterior, Coyoacán, México DF 04510, Mexico
| | - David Morales-Morales
- Instituto de Química, Universidad Nacional Autónoma de México, Cd. Universitaria, Circuito Exterior, Coyoacán, México DF 04510, Mexico
| | - Jose Oñate-Garzón
- Grupo de Investigación en Química y Biotecnología (QUIBIO), Facultad de Ciencias Básicas, Universidad Santiago de Cali, Cali 760031, Colombia
| | - Dorian Polo-Cerón
- Laboratorio de Investigación en Catálisis y Procesos (LICAP), Facultad de Ciencias Naturales y Exactas, Departamento de Química, Universidad del Valle, Cali 760001, Colombia
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116
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Nashaat S, Henen MA, El-Messery SM, Eisa H. Synthesis, state-of-the-art NMR-binding and molecular modeling study of new benzimidazole core derivatives as Pin1 inhibitors: Targeting breast cancer. Bioorg Med Chem 2020; 28:115495. [PMID: 32307260 DOI: 10.1016/j.bmc.2020.115495] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/25/2020] [Accepted: 04/05/2020] [Indexed: 12/30/2022]
Abstract
New series of benzimidazole ring core conjugated with either dithiocarbamate or thiopropyl linkers, hybridized with different secondary amines were synthesized; 5-15 and 22-31; respectively. The new compounds were characterized by different spectroscopic techniques (1H, 13C 1D & 2D NMR, ESI-MS and IR). They were screened for in vitro anticancer activity against breast cancer using MCF7 cell line. The results obtained revealed that compounds 5, 12, 15 and 25 were the most active among the synthesized series exhibiting IC50 < 10 µg/ml against DOX. To characterize targeting breast cancer on molecular level, binding to 15N-labeled Pin1 enzyme was conducted using state-of-the-art 2D NMR binding experiments. Results showed promising binding between compounds 5, 12, and 25 by chemical shift perturbation (peak shifting or peak disappearance). Molecular docking study were quite valuable to explain the binding mode of active derivatives via hydrogen bonding. Additional contact preferences and surface mapping studies stated the similarity pattern between active candidates which may pave the way for more precise anti breast cancer target optimization.
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117
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Morcoss MM, Abdelhafez ESMN, Ibrahem RA, Abdel-Rahman HM, Abdel-Aziz M, Abou El-Ella DA. Design, synthesis, mechanistic studies and in silico ADME predictions of benzimidazole derivatives as novel antifungal agents. Bioorg Chem 2020; 101:103956. [PMID: 32512267 DOI: 10.1016/j.bioorg.2020.103956] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/17/2020] [Accepted: 05/18/2020] [Indexed: 12/23/2022]
Abstract
Herein, novel three series of benzimidazole scaffold bearing hydrazone, 1,2,4-triazole and 1,3,4-oxadiazole moieties 1-3, 4a-j, 6a-c and 7 derivatives were designed, synthesized and evaluated for their antimicrobial activity. The structures of the prepared compounds were assigned using different spectroscopic techniques such as IR, 1H NMR, 13C NMR and elemental analyses. Compounds 3, 4a, 4e and 4f exhibited remarkable antifungal activity against C. albicans and C. neoformans var. grubii with MIC values ranging from 4 to 16 μg/mL. Furthermore, they were not cytotoxic against red blood cells and human embryonic kidney cells at concentration up to 32 μg/mL. The study was expanded to forecast the mechanism of action of the prepared compounds and determine sterol quantitation method (SQM) by spectrophotometric assay. On the other hand, compound 4e showed the highest inhibitory activity against lanosterol 14α-demethylase (CYP51) with IC50 value = 0.19 μg/mL compared to fluconazole as reference IC50 value = 0.62 μg/mL. Also, compounds 4d and 4f exhibited mild to moderate antibacterial activity. Moreover, molecular docking of the active target compound 4e in active site of lanosterol 14α-demethylase (CYP51) revealed that docking scores and binding mode are comparable to that of co-crystallized ligand confirming their antifungal activity. In silico ADME prediction investigations also forecasting the drug-like characters of these compounds.
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Affiliation(s)
- Martha M Morcoss
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Nahda University, 62513 Beni-Suef, Egypt.
| | | | - Reham A Ibrahem
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, 61519 Minia, Egypt
| | - Hamdy M Abdel-Rahman
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Nahda University, 62513 Beni-Suef, Egypt; Department of Medicinal Chemistry, Faculty of Pharmacy, Assiut University, 71526 Assiut, Egypt
| | - Mohamed Abdel-Aziz
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, 61519 Minia, Egypt
| | - Dalal A Abou El-Ella
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo 11566, Egypt
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118
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García-Aranda MI, Gonzalez-Padilla JE, Gómez-Castro CZ, Gómez-Gómez YM, Rosales-Hernández MC, García-Báez EV, Franco-Hernández MO, Castrejón-Flores JL, Padilla-Martínez II. Anti-inflammatory effect and inhibition of nitric oxide production by targeting COXs and iNOS enzymes with the 1,2-diphenyl benzimidazole pharmacophore. Bioorg Med Chem 2020; 28:115427. [PMID: 32205045 DOI: 10.1016/j.bmc.2020.115427] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 03/02/2020] [Accepted: 03/05/2020] [Indexed: 11/29/2022]
Abstract
Being the base of several non-communicable diseases, including cancer, inflammation is a complex process generated by tissue damage or change in the body homeostatic state. Currently, the therapeutic treatment for chronic inflammation related diseases is based on the use of selective cyclooxygenase II enzyme, COX-2, inhibitors or Coxibs, which have recently regained attention giving their preventive role in colon cancer. Thus, the discovery of new molecules that selectively inhibit COX-2 and other inflammatory mediators is a current challenge in the medicinal chemistry field. 1-Phenylbenzimidazoles have shown potential COX inhibitory activity, because they can reproduce the interaction profile of known COX inhibitors. Therefore, in the present investigation a series of 1,2-diphenylbenzimidazoles (DPBI) with different aromatic substitutions in the para position were synthesized and their interaction with COX-2 and nitric oxide synthase, iNOS, was determined in silico, in vitro and in vivo. Compound 2-(4-bromophenyl)-1-(4-nitrophenyl)-1H-benzo[d]imidazole showed the best inhibition towards COX-2, while compounds N-(4-(2-(4-bromophenyl)-1H-benzo[d]imidazol-1-yl)phenyl)acetamide and N-(4-(2-(4-chlorophenyl)-1H-benzo[d]imidazol-1-yl)phenyl)acetamide diminished the production of NO in vitro. Additionally, they had a significant anti-inflammatory activity in vivo when given orally.
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Affiliation(s)
- Mónica I García-Aranda
- Laboratorio de Química Supramolecular y Nanociencias, Unidad Profesional Interdisciplinaria de Biotecnología del Instituto Politécnico Nacional, Av. Acueducto s/n Barrio la Laguna Ticomán, Ciudad de México 07340, Mexico City, Mexico
| | - Jazmin E Gonzalez-Padilla
- Laboratorio de Biofísica y Biocatálisis, Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Casco de Santo Tomás, 11340 Mexico City, Mexico
| | - Carlos Z Gómez-Castro
- CONACyT - Universidad Autónoma del Estado de Hidalgo, km 4.5 Carretera Pachuca-Tulancingo, Col. Carboneras, Mineral de la Reforma, Hidalgo 42184, Mexico
| | - Yolanda M Gómez-Gómez
- Laboratorio de Química Supramolecular y Nanociencias, Unidad Profesional Interdisciplinaria de Biotecnología del Instituto Politécnico Nacional, Av. Acueducto s/n Barrio la Laguna Ticomán, Ciudad de México 07340, Mexico City, Mexico
| | - Martha C Rosales-Hernández
- Laboratorio de Biofísica y Biocatálisis, Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Casco de Santo Tomás, 11340 Mexico City, Mexico
| | - Efrén V García-Báez
- Laboratorio de Química Supramolecular y Nanociencias, Unidad Profesional Interdisciplinaria de Biotecnología del Instituto Politécnico Nacional, Av. Acueducto s/n Barrio la Laguna Ticomán, Ciudad de México 07340, Mexico City, Mexico
| | - Marina O Franco-Hernández
- Laboratorio de Química Supramolecular y Nanociencias, Unidad Profesional Interdisciplinaria de Biotecnología del Instituto Politécnico Nacional, Av. Acueducto s/n Barrio la Laguna Ticomán, Ciudad de México 07340, Mexico City, Mexico
| | - José L Castrejón-Flores
- Laboratorio de Cultivo Celular y Biología Molecular, Unidad Profesional Interdisciplinaria de Biotecnología del Instituto Politécnico Nacional, Av. Acueducto s/n Barrio la Laguna Ticomán, Ciudad de México 07340, Mexico City, Mexico.
| | - Itzia I Padilla-Martínez
- Laboratorio de Química Supramolecular y Nanociencias, Unidad Profesional Interdisciplinaria de Biotecnología del Instituto Politécnico Nacional, Av. Acueducto s/n Barrio la Laguna Ticomán, Ciudad de México 07340, Mexico City, Mexico.
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119
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Dey AR, Begum N, Anisuzzaman, Alim MA, Alam MZ. Multiple anthelmintic resistance in gastrointestinal nematodes of small ruminants in Bangladesh. Parasitol Int 2020; 77:102105. [PMID: 32179135 DOI: 10.1016/j.parint.2020.102105] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 02/27/2020] [Accepted: 03/11/2020] [Indexed: 10/24/2022]
Abstract
Anthelmintic resistance (AR) against gastrointestinal nematodes (GINs) of sheep and goats is a global concern. To address the problem, this study assessed the status of AR in different government and private sheep and goat farms in Bangladesh. We conducted fecal egg count reduction test (FECRT) and Egg hatch assay (EHA) experiments. For the detection of resistant larvae, pooled fecal samples from treated and non-treated groups were subjected to coproculture. Furthermore, 195 adult Haemonchus parasites were genotyped to ascertain benzimidazole (BZ) resistance allele from seven topographic zones of Bangladesh using allele specific PCR (AS-PCR). In FECRT, the percentage reduction along with 95% confidence intervals indicated that GINs were resistant to albendazole (ABZ), levamisole (LEV) and ivermectin (IVM). Coproculture revealed that Haemonchus spp., Oesophagostomum spp. and Trichostrongylus spp. were resistant to anthelmintics. ABZ resistance was also confirmed by in vitro EHA in all the farms except the private goat farm in Mymensingh. The genotype frequencies were 6% for homozygous resistant (rr), 59% for heterozygous (rS) and 35% for homozygous susceptible (SS) among different topographic zones. The allelic frequency of the mutation conferring resistance (r) ranged from 25% to 47% signifying resistance to BZ in nematodes of sheep/goats. The genotype frequencies (rr, rS and SS) and allelic frequencies (r and S) varied significantly (p˂0.05) in different zones in Bangladesh. Overall, the data suggest an alarming condition created by multiple AR in Bangladesh.
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Affiliation(s)
- Anita Rani Dey
- Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Nurjahan Begum
- Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Anisuzzaman
- Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Md Abdul Alim
- Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Mohammad Zahangir Alam
- Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
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Melville LA, Redman E, Morrison AA, Rebecca Chen PC, Avramenko R, Mitchell S, Van Dijk J, Innocent G, Sargison F, Aitken C, Gilleard JS, Bartley DJ. Large scale screening for benzimidazole resistance mutations in Nematodirus battus, using both pyrosequence genotyping and deep amplicon sequencing, indicates the early emergence of resistance on UK sheep farms. Int J Parasitol Drugs Drug Resist 2020; 12:68-76. [PMID: 32251964 PMCID: PMC7132121 DOI: 10.1016/j.ijpddr.2020.03.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/27/2020] [Accepted: 03/03/2020] [Indexed: 01/10/2023]
Abstract
Benzimidazoles (BZ) have been the anthelmintic of choice for controlling Nematodirus battus infections since their release in the 1950s. Despite heavy reliance on this single anthelmintic drug class, resistance was not identified in this nematode until 2010 (Mitchell et al., 2011). The study aimed to explore the prevalence of BZ-resistance mutations in N. battus from UK sheep flocks using deep amplicon sequencing and pyrosequencing platforms. Based on evidence from other gastrointestinal nematodes, resistance in N. battus is likely to be conferred by single nucleotide polymorphisms (SNP) within the β-tubulin isotype 1 locus at codons 167, 198 and 200. Pyrosequencing and deep amplicon sequencing assays were designed to identify the F167Y (TTC to TAC), E198A (GAA to GCA) and F200Y (TTC to TAC) SNPs. Nematodirus battus populations from 253 independent farms were analysed by pyrosequencing; 174 farm populations were included in deep amplicon sequencing and 170 were analysed using both technologies. F200Y was the most prevalent SNP identified throughout the UK, in 12-27% of the populations tested depending on assay, at a low overall individual frequency of 2.2 ± 0.6% (mean ± SEM, based on pyrosequencing results). Four out of the five populations with high frequencies (>20%) of the F200Y mutation were located in NW England. The F167Y SNP was identified, for the first time in this species, in four of the populations tested at a low frequency (1.2% ± 0.01), indicating the early emergence of the mutation. E198A or E198L were not identified in any of the isolates. Results obtained were comparable between both techniques for F200Y (Lins' CCC, rc = 0.96) with discrepancies being limited to populations with low frequencies. The recent emergence of resistance in this species will provide a unique opportunity to study the early stages of anthelmintic resistance within a natural setting and track its progress in the future.
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Affiliation(s)
- Lynsey A Melville
- Department of Disease Control, Moredun Research Institute, Pentlands Science Park, Bush Loan, EH26 0PZ, UK.
| | - Elizabeth Redman
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, CalgCary, Alberta, Canada
| | - Alison A Morrison
- Department of Disease Control, Moredun Research Institute, Pentlands Science Park, Bush Loan, EH26 0PZ, UK
| | - Pai Chia Rebecca Chen
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, CalgCary, Alberta, Canada
| | - Russell Avramenko
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, CalgCary, Alberta, Canada
| | - Sian Mitchell
- Centre for Preventive Medicine, Animal Health Trust, Lanwades Park, Kentford, Newmarket, Suffolk, CB8 7UU, UK
| | - Jan Van Dijk
- Zoetis, Birchwood Building, Springfield Drive, Leatherhead, KT22 7LP, UK
| | - Giles Innocent
- Biomathmatics and Statistics Scotland, JCMB, King's Buildings, Peter Guthrie Tait Road, Edinburgh, EH9 3FD, UK
| | - Fiona Sargison
- Department of Disease Control, Moredun Research Institute, Pentlands Science Park, Bush Loan, EH26 0PZ, UK
| | - Catriona Aitken
- Department of Disease Control, Moredun Research Institute, Pentlands Science Park, Bush Loan, EH26 0PZ, UK
| | - John S Gilleard
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, CalgCary, Alberta, Canada
| | - Dave J Bartley
- Department of Disease Control, Moredun Research Institute, Pentlands Science Park, Bush Loan, EH26 0PZ, UK
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Anastassova N, Yancheva D, Hristova-Avakumova N, Hadjimitova V, Traykov T, Aluani D, Tzankova V, Kondeva-Burdina M. New benzimidazole-aldehyde hybrids as neuroprotectors with hypochlorite and superoxide radical-scavenging activity. Pharmacol Rep 2020; 72:846-56. [PMID: 32125683 DOI: 10.1007/s43440-020-00077-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 12/24/2019] [Accepted: 12/30/2019] [Indexed: 01/08/2023]
Abstract
BACKGROUND Many neurodegenerative disorders include oxidative stress-mediated pathology. Melatonin and its metabolites act as endogenous reactive oxygen species (ROS) scavengers and antioxidants. N,N'-Disubstituted benzimidazole-2-thiones with extended side chains could exert antioxidant and neuroprotective properties due to structural similarities to melatonin. METHODS The toxicological potential of the compounds was evaluated by monitoring the synaptosomal viability and the levels of reduced glutathione (GSH) in isolated rat brain synaptosomes. The neuroprotective effects were assessed in vitro in a model of 6-hydroxydopamine (6-OHDA)-induced neurotoxicity. The capability to decrease superoxide anion radical and hypochlorite was evaluated by luminol-dependent chemiluminescent assays. RESULTS Compounds 5-7 containing residues of veratraldehyde, vanillin, and syringaldehyde at concentration 250 μM, preserved at the highest degree the synaptosomal viability and GSH levels. Further screening of compounds 5-7 at lower concentrations of 100 μM, 10 μM, and 1 μM, respectively, demonstrated that 6 and 7 do not show any toxicity within this concentration range. In the model of 6-OHDA-induced oxidative stress, 6 revealed concentration-dependent, neuroprotective, and antioxidant activities similar to melatonin. All the three compounds demonstrated ability to decrease the chemiluminescent scavenging index (CL-SI) in the hypochlorite containing system. In the superoxide system, the hydrazones exhibited different effects on the signal. CONCLUSIONS Our studies suggest that the benzimidazole-aldehyde hybrids act as direct ROS scavengers and membranes' stabilizers against free radicals. Thus, they play a role in the antioxidative defense system and have a promising potential as therapeutic neuroprotective agents for the treatment of neurodegenerative disorders.
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Scott F, Fala AM, Pennicott LE, Reuillon TD, Massirer KB, Elkins JM, Ward SE. Development of 2-(4-pyridyl)- benzimidazoles as PKN2 chemical tools to probe cancer. Bioorg Med Chem Lett 2020; 30:127040. [PMID: 32085971 PMCID: PMC7078758 DOI: 10.1016/j.bmcl.2020.127040] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/28/2020] [Accepted: 02/14/2020] [Indexed: 11/26/2022]
Abstract
Kinases are signalling proteins which have proven to be successful targets for the treatment of a variety of diseases, predominantly in cancers. However, only a small proportion of kinases (<20%) have been investigated for their therapeutic viability, likely due to the lack of available chemical tools across the kinome. In this work we describe initial efforts in the development of a selective chemical tool for protein kinase N2 (PKN2), a relatively unexplored kinase of interest in several types of cancer. The most successful compound, 5, has a measured IC50 of 0.064 μM against PKN2, with ca. 17-fold selectivity over close homologue, PKN1.
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Affiliation(s)
- Fiona Scott
- Sussex Drug Discovery Centre, University of Sussex, Sussex House, Falmer, Brighton BN1 9RH, United Kingdom.
| | - Angela M Fala
- Centro de Química Medicinal (CQMED), Centro de Biologia Molecular e Engenharia Genética (CBMEG), Universidade Estadual de Campinas (UNICAMP), Campinas, SP 13083-875, Brazil; Structural Genomics Consortium, Departamento de Genética e Evolução, Instituto de Biologia, UNICAMP, Campinas, SP 13083-886, Brazil.
| | - Lewis E Pennicott
- Sussex Drug Discovery Centre, University of Sussex, Sussex House, Falmer, Brighton BN1 9RH, United Kingdom.
| | - Tristan D Reuillon
- Sussex Drug Discovery Centre, University of Sussex, Sussex House, Falmer, Brighton BN1 9RH, United Kingdom.
| | - Katlin B Massirer
- Centro de Química Medicinal (CQMED), Centro de Biologia Molecular e Engenharia Genética (CBMEG), Universidade Estadual de Campinas (UNICAMP), Campinas, SP 13083-875, Brazil; Structural Genomics Consortium, Departamento de Genética e Evolução, Instituto de Biologia, UNICAMP, Campinas, SP 13083-886, Brazil.
| | - Jonathan M Elkins
- Structural Genomics Consortium, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7DQ, United Kingdom.
| | - Simon E Ward
- Sussex Drug Discovery Centre, University of Sussex, Sussex House, Falmer, Brighton BN1 9RH, United Kingdom; Medicines Discovery Institute, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom.
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Horak E, Babić D, Vianello R, Perin N, Hranjec M, Steinberg IM. Photophysical properties and immobilisation of fluorescent pH responsive aminated benzimidazo[1,2-a]quinoline-6-carbonitriles. Spectrochim Acta A Mol Biomol Spectrosc 2020; 227:117588. [PMID: 31703991 DOI: 10.1016/j.saa.2019.117588] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/30/2019] [Accepted: 09/30/2019] [Indexed: 06/10/2023]
Abstract
This work presents a systematic evaluation of 2-amino, 5-amino and 2,5-diamino substituted benzimidazo[1,2-a]quinoline-6-carbonitriles as novel pH probes with a potential application in pH sensing materials or as H+ fluoroionophores in bulk optode membranes. The study was carried out by varying the length, type and position of amino substituents in ten fluorescent dyes with the same benzimidazo[1,2-a]quinoline-6-carbonitrile core. The photophysical and acid-base properties of the dyes were investigated by the UV/Vis absorption and fluorescence spectroscopies, and interpreted by the electronic structure DFT calculations. pH sensing mechanisms and structure-property relations affecting the fluorescence response were discussed through a detailed analysis of the piperidine substituted derivatives 1-4. Push-pull donor-acceptor interactions stimulate strong fluorescence in the visible spectral range (up to Φ = 0.65 for 7) and induce significant changes in the photophysical properties associated with the acid-base equilibria (up to a 50-fold increase in the fluorescence intensity). pKa values in aqueous and mixed solutions (v/v H2O:EtOH 99:1, 50:50), appear suitable for monitoring acidic pH in solution. The most promising candidates were immobilised in thin polymer matrices by the spin coating technique to form fluorescent sensing materials - optodes, and examined as novel pH-sensitive fluoroionophores. In the liquid membrane environment, dyes exhibited significant increase of the apparent pKas by almost 4 units. Bright and blue emissive thin films showed pH response and dynamic range around pKa = 5, making them suitable for a wide range of optical sensing applications.
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Affiliation(s)
- Ema Horak
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička 54, 10000, Zagreb, Croatia.
| | - Darko Babić
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička 54, 10000, Zagreb, Croatia
| | - Robert Vianello
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička 54, 10000, Zagreb, Croatia.
| | - Nataša Perin
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000, Zagreb, Croatia
| | - Marijana Hranjec
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000, Zagreb, Croatia
| | - Ivana Murković Steinberg
- Department of General and Inorganic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000, Zagreb, Croatia
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Rasal NK, Sonawane RB, Jagtap SV. Potential 2,4-dimethyl-1H-pyrrole-3-carboxamide bearing benzimidazole template: Design, synthesis, in vitro anticancer and in silico ADME study. Bioorg Chem 2020; 97:103660. [PMID: 32086056 DOI: 10.1016/j.bioorg.2020.103660] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 12/01/2019] [Revised: 02/08/2020] [Accepted: 02/10/2020] [Indexed: 01/02/2023]
Abstract
A new series of 2,4-dimethyl-1H-pyrrole-3-carboxamide derivatives bearing benzimidazole moiety was synthesized through a molecular hybridization approach and evaluated for in vitro anticancer activity by NCI-60 on leukemia, melanoma, lung, colon, CNS, ovarian, renal, prostate and breast cancer cell lines at a single dose (10 µM). Among all the synthesized conjugates, some derivatives showed more or less good activity even at such a small dose, while, compound 5-(1H-benzo[d]imidazol-2-yl)-N-(1-cyclohexylethyl)-2,4-dimethyl-1H-pyrrole-3-carboxamide (8f) displayed significant antiproliferative activity specifically against MDA-MB human cancer cell lines. Compound 8f showed promising activity against MDA-MB-435 cell line of melanoma (Growth inhibition: 62.46%) and MDA-MB-468 cell line of breast (Growth inhibition: 40.24%). Computational ADME study qualified its significant physicochemical, pharmacokinetic and drug-likeness properties with good predicted oral bioavailability. Thus this new hybrid molecules would be useful for further anticancer drug development.
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Affiliation(s)
- Nishant K Rasal
- Deparment of Chemistry, Baburaoji Gholap College, Affiliated to Savitribai Phule Pune University, Sangvi, Pune 411017, India
| | - Rahul B Sonawane
- Deparment of Chemistry, Baburaoji Gholap College, Affiliated to Savitribai Phule Pune University, Sangvi, Pune 411017, India
| | - Sangeeta V Jagtap
- Deparment of Chemistry, Baburaoji Gholap College, Affiliated to Savitribai Phule Pune University, Sangvi, Pune 411017, India.
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Janani M, Senejani MA, Isfahani TM. An Efficient Synthesis of Benzimidazole and Benzothiazole Derivatives Using a Nickel(II) Metal-Organic Framework. Curr Org Synth 2020; 17:109-116. [PMID: 32003698 DOI: 10.2174/1570179417666200117110758] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 11/15/2019] [Accepted: 12/28/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND The benzimidazoles and benzothiazoles have shown relatively high pharmaceutical and biological activities. In recent years, numerous methods have been developed for synthesis of benzimidazole and benzothiazole derivatives using different catalysts. However, only some of the reported procedures are quite satisfactory and most of them have drawbacks. Herein, we report a convenient method for synthesis of benzimidazole and benzothiazole derivatives using a nickel (II) metal-organic framework (Ni- MOF) as a novel and reusable catalyst. The presence of unsaturated metal centers makes metal-organic frameworks to be used as Lewis acid catalysts. OBJECTIVE The primary objective of this study was to describe an efficient method for synthesis of benzimidazole and benzothiazole derivatives. METHOD Ni-MOF was prepared using the modified evaporation method and was characterized by FE-SEM, FT-IR, TGA, and XRD techniques.The catalyst was then used to test the synthesis of some benzimidazole and benzothiazole derivatives. The benzimidazoles and benzothiazoles were characterized by Elemental analyses, HNMR and IR techniques. RESULT A variety of aromatic aldehydes bearing electron donating groups or electron-withdrawing were reacted with 1,2-phenylenediamine or 2-aminothiophenol using Ni-MOF in good to excellent yields. CONCLUSION In summary, a new and highly efficient method was developed and reported for the synthesis of benzimidazole and benzothiazole derivatives using nickel(II) metal-organic framework. The advantages are short reaction times, good to excellent yields, the environmentally benign and simple procedure, stability, nontoxicity, recyclability, and easy separation of the catalyst.
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Affiliation(s)
- Marzieh Janani
- Department of Chemistry, Arak Branch, Islamic Azad University, Arak, Iran
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Pathak D, Choudhary S, Singh PK, Singh M, Chadha N, Silakari O. Pharmacophore-based designing of putative ROS-1 targeting agents for NSCLC. Mol Divers 2020; 25:1091-1102. [PMID: 32002714 DOI: 10.1007/s11030-020-10036-y] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 01/09/2020] [Indexed: 12/24/2022]
Abstract
Non-small cell lung cancer (NSCLC) is a fatal non-immunogenic malignancy, and proto-oncogene receptor tyrosine kinase (ROS-1) is one of its clinically relevant biomarkers. In this context, herein, we report a series of benzimidazol-2-amine derivatives which were synthesized on the basis of the pharmacophore of ROS-1 and evaluated for anti-proliferative activity. For this, the in silico receptor-ligand pharmacophore model of ROS-1, previously published by our own group, was utilized to screen out an in-house database of small molecule heterocycles. Docking analysis of the selected compounds was carried out within the active site of wild-type (WT) ROS-1 as well as Gly2032Arg mutant ROS-1 protein, which confirmed the retention of conserved interaction between selected molecules and hinge region amino acids Glu2027 and Met2029. Docking was followed by molecular dynamics simulations for the stability of the complexes and calculation of the MM-GBSA score for binding affinity. Finally, compounds were synthesized and the anti-proliferative potential of compounds was evaluated using the A549 cell line. Compounds 3a and 3b presented significant GI50 values between 23.0 and 25.4 μM, among all the tested compounds.
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Affiliation(s)
- Disha Pathak
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
| | - Shalki Choudhary
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
| | - Pankaj Kumar Singh
- Department of Chemistry and Pharmacy, University of Sassari, 07100, Sassari, Italy
| | - Manjinder Singh
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Navriti Chadha
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
| | - Om Silakari
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India.
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Bordes L, Dumont N, Lespine A, Souil E, Sutra JF, Prévot F, Grisez C, Romanos L, Dailledouze A, Jacquiet P. First report of multiple resistance to eprinomectin and benzimidazole in Haemonchus contortus on a dairy goat farm in France. Parasitol Int 2020; 76:102063. [PMID: 31978599 DOI: 10.1016/j.parint.2020.102063] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/16/2020] [Accepted: 01/19/2020] [Indexed: 11/25/2022]
Abstract
Pour-on eprinomectin was recently registered for lactating small ruminants. Given the high prevalence of benzimidazole resistance in gastrointestinal nematodes in dairy goats, many farmers use eprinomectin exclusively to treat their animals. On a French dairy goat farm, a veterinary practitioner noted a poor response to two types of eprinomectin treatment (pour-on application and injectable formulation). Therefore, we evaluated the efficacy of both formulations of eprinomectin, as well as moxidectin and fenbendazole, using the fecal egg count reduction test (FECRT) according to the World Association for the Advancement of Veterinary Parasitology (WAAVP) guidelines. Nematode species were identified at days 0 and post-treatment days 14 after bulk larval cultures, by morphology and real-time PCR. Plasma concentrations of eprinomectin were analyzed by high-performance liquid chromatography (HPLC) at post-treatment days 2 and 5 in the eprinomectin-treated groups. Egg count reductions were poor in animals treated with topical (-16.7%; 95% CI:[-237; 59]) or subcutaneous (21.5%; 95% CI:[-126; 73]) eprinomectin, and with fenbendazole (-5.8%; 95% CI:[-205; 63]). Haemonchus contortus was the main species identified by morphology and by real-time PCR before and after treatment. The plasma concentrations of eprinomectin were determined in all eprinomectin-treated animals and were above 2 ng/ml at post-treatment day 2, indicating that the lack of effect was not due to low exposure of the worms to the drug. Interestingly, moxidectin remained effective in all infected animals. This is the first report of multiple resistance to eprinomectin and benzimidazole in H. contortus on a French dairy goat farm with moxidectin as a relevant alternative.
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Affiliation(s)
- Léa Bordes
- UMR INRA/ENVT IHAP, UMT Santé des Troupeaux de Petits Ruminants, Université de Toulouse, École Nationale Vétérinaire de Toulouse, France
| | | | - Anne Lespine
- INTHERES, Université de Toulouse, INRA, ENVT, Toulouse, France
| | - Elise Souil
- UMR INRA/ENVT IHAP, UMT Santé des Troupeaux de Petits Ruminants, Université de Toulouse, École Nationale Vétérinaire de Toulouse, France
| | | | - Françoise Prévot
- UMR INRA/ENVT IHAP, UMT Santé des Troupeaux de Petits Ruminants, Université de Toulouse, École Nationale Vétérinaire de Toulouse, France
| | - Christelle Grisez
- UMR INRA/ENVT IHAP, UMT Santé des Troupeaux de Petits Ruminants, Université de Toulouse, École Nationale Vétérinaire de Toulouse, France
| | - Lola Romanos
- UMR INRA/ENVT IHAP, UMT Santé des Troupeaux de Petits Ruminants, Université de Toulouse, École Nationale Vétérinaire de Toulouse, France
| | - Aurélie Dailledouze
- UMR INRA/ENVT IHAP, UMT Santé des Troupeaux de Petits Ruminants, Université de Toulouse, École Nationale Vétérinaire de Toulouse, France
| | - Philippe Jacquiet
- UMR INRA/ENVT IHAP, UMT Santé des Troupeaux de Petits Ruminants, Université de Toulouse, École Nationale Vétérinaire de Toulouse, France.
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Jiang X, Liu Z, Yang Y, Li H, Qi X, Ren WX, Deng M, Lü M, Wu J, Liang S. A mitochondria-targeted two-photon fluorescent probe for sensing and imaging pH changes in living cells. Spectrochim Acta A Mol Biomol Spectrosc 2020; 224:117435. [PMID: 31400745 DOI: 10.1016/j.saa.2019.117435] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 06/08/2019] [Revised: 07/22/2019] [Accepted: 07/27/2019] [Indexed: 06/10/2023]
Abstract
A novel two-photon pH probe, 3-benzimidazole-7-hydroxycoumarin (BHC), was designed and synthesized based on the structures of hydroxycoumarin and benzimidazole. BHC showed good linearity in the pH ranges of 3.30-5.40 (pKa = 4.20) and 6.50-8.30 (pKa = 7.20) at a maximum emission wavelength of 480 nm. BHC in acidic and alkaline media could be distinguished by an obvious spectral shift of the maximum absorption wavelength from 390 nm to 420 nm. In addition, BHC was well localized to mitochondria and successfully applied to one-photon and two-photon imaging of pH changes in the mitochondria of HeLa cells. The findings presented herein suggest that BHC can serve as an excellent fluorescent probe for selectively sensing mitochondrial pH changes with remarkable photostability and low cytotoxicity.
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Affiliation(s)
- Xueqin Jiang
- The Pharmacy School of Southwest Medical University, Luzhou, China; The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Zengjin Liu
- The Affiliated Hospital of Traditional Chinese Medicine of Southwest Medical University, Luzhou, China
| | - Youzhe Yang
- The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Hao Li
- The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xiaoyi Qi
- The Pharmacy School of Southwest Medical University, Luzhou, China; Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China
| | - Wen Xiu Ren
- The Affiliated Hospital of Southwest Medical University, Luzhou, China; Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China
| | - Mingming Deng
- The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Muhan Lü
- The Affiliated Hospital of Southwest Medical University, Luzhou, China.
| | - Jianming Wu
- The Pharmacy School of Southwest Medical University, Luzhou, China.
| | - Sicheng Liang
- The Affiliated Hospital of Southwest Medical University, Luzhou, China; The Pharmacy School of Southwest Medical University, Luzhou, China; Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China.
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Uslu AG, Gür Maz T, Nocentini A, Banoglu E, Supuran CT, Çalışkan B. Benzimidazole derivatives as potent and isoform selective tumor-associated carbonic anhydrase IX/XII inhibitors. Bioorg Chem 2020; 95:103544. [PMID: 31915112 DOI: 10.1016/j.bioorg.2019.103544] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/06/2019] [Accepted: 12/21/2019] [Indexed: 01/01/2023]
Abstract
We describe the synthesis of a series of 2-arylbenzimidazole derivatives bearing sulfonamide functionality (4a-d, 7a-c and 10) as well as hydroxamic acid (15a-b), carboxylic acid (16a-b), carboxamide (17a-b) and boronic acid (22a-b and 26) functionalities, which act as human carbonic anhydrase (hCA, EC 4.2.1.1) inhibitors. The newly synthesized benzimidazole derivatives were evaluated against 4 physiologically relevant CA isoforms (hCA I, II, IX, and XII), and especially the sulfonamide-containing benzimidazoles demonstrated intriguing inhibitory activity against tumor associated CA IX and XII with KI values in the range of 5.2-29.3 nM and 9.9-41.7 nM, respectively. Notably, compound 4c was the most potent and selective CA IX (KI = 6.6 nM) and XII (KI = 9.9 nM) inhibitor with a significant selectivity ratio over cytosolic CA I and II isoforms in the range of 3.4-25.2. In addition, compounds having hydroxamic acid (15a-b) or carboxylic acid (16a-b) functionalities resulted in greater selectivity ratios for CA IX/XII over CAI/II in the range of 4.1-121.5 although with KI values in lower micromolar potency (KIs = 0.36-0.85 μM for CA IX/XII).
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Bhuiyan NH, Varney ML, Wiemer DF, Holstein SA. Novel benzimidazole phosphonates as potential inhibitors of protein prenylation. Bioorg Med Chem Lett 2019; 29:126757. [PMID: 31699606 DOI: 10.1016/j.bmcl.2019.126757] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/11/2019] [Accepted: 10/13/2019] [Indexed: 10/25/2022]
Abstract
Benzimidazole carboxyphosphonates and bisphosphonates have been prepared and evaluated for their activity as inhibitors of protein prenylation or isoprenoid biosynthesis. The nature of the phosphonate head group was found to dictate enzyme specificity. The lead carboxyphosphonate inhibits geranylgeranyl transferase II while its corresponding bisphosphonate analogue potently inhibits farnesyl diphosphate synthase. The most active inhibitors effectively disrupted protein prenylation in human multiple myeloma cells.
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Affiliation(s)
- Nazmul H Bhuiyan
- Department of Chemistry, University of Iowa, Iowa City, IA 52242-1294, USA
| | - Michelle L Varney
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - David F Wiemer
- Department of Chemistry, University of Iowa, Iowa City, IA 52242-1294, USA; Department of Pharmacology, University of Iowa, Iowa City, IA 52242-1109, USA
| | - Sarah A Holstein
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA; Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA.
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131
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Zamani L, Faghih Z, Zomorodian K, Mirjalili BBF, Jalilian A, Khabnadideh S. Nano-SnCl 4.SiO 2, an efficient catalyst for synthesis of benzimidazole drivatives as antifungal and cytotoxic agents. Res Pharm Sci 2019; 14:496-503. [PMID: 32038729 PMCID: PMC6937748 DOI: 10.4103/1735-5362.272536] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The concept of green chemistry has made significant impact on many frontages including the use of green solvents or sustainable catalyst materials. Benzimidazole ring is an important nitrogen-containing heterocyclic, which exhibits a broad spectrum of bioactivities and are widely utilized by the medicinal chemists for drug discovery. A simple and efficient method was developed for the synthesis of some benzimidazole derivatives via reaction of o-phenylenediamine and substituted aldehydes in the presence of nano-SnCl4/SiO2 as a mild catalyst. Ten 2-substituted benzimidazole compounds ( J1-J10 ) were synthesized. All compounds were evaluated against different species of yeasts and filament fungi using broth micro dilution method as recommended by clinical and laboratory standard institute. Among these compounds, the active ones were chosen for their cytotoxic activities evaluation against MCF-7 and A549 cell lines using MTT method. Compound J2 showed the best antifungal activity against all tested species. Compounds J5-J7 had also desirable antifungal activities. Our cytotoxic results were also similar to the antifungal activities except for J7 which had no cytotoxic activity.
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Affiliation(s)
- Leila Zamani
- Pharmaceutical Sciences Research Centre, Shiraz University of Medical Sciences, Shiraz, I.R. Iran
| | - Zeinab Faghih
- Pharmaceutical Sciences Research Centre, Shiraz University of Medical Sciences, Shiraz, I.R. Iran
| | - Kamiar Zomorodian
- Center of Basic Researches in Infectious Diseases, Department of Medical Mycology, and Parasitology School of Medicine, Shiraz University of Medical Sciences, Shiraz, I.R. Iran
| | | | - Asghar Jalilian
- Pharmaceutical Sciences Research Centre, Shiraz University of Medical Sciences, Shiraz, I.R. Iran
| | - Soghra Khabnadideh
- Pharmaceutical Sciences Research Centre, Shiraz University of Medical Sciences, Shiraz, I.R. Iran
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132
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Asemanipoor N, Mohammadi-Khanaposhtani M, Moradi S, Vahidi M, Asadi M, Faramarzi MA, Mahdavi M, Biglar M, Larijani B, Hamedifar H, Hajimiri MH. Synthesis and biological evaluation of new benzimidazole-1,2,3-triazole hybrids as potential α-glucosidase inhibitors. Bioorg Chem 2019; 95:103482. [PMID: 31838286 DOI: 10.1016/j.bioorg.2019.103482] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/24/2019] [Accepted: 11/25/2019] [Indexed: 10/25/2022]
Abstract
In this study, a series of benzimidazole-1,2,3-triazole hybrids 8a-n as new α-glucosidase inhibitors were designed and synthesized. In vitro α-glucosidase inhibition activity results indicated that all the synthesized compounds (IC50 values ranging from 25.2 ± 0.9 to 176.5 ± 6.7 μM) exhibited more inhibitory activity in comparison to standard drug acarbose (IC50 = 750.0 ± 12.5 μM). Enzyme kinetic study on the most potent compound 8c revealed that this compound was a competitive inhibitor into α-glucosidase. Moreover, the docking study was performed in order to evaluation of interaction modes of the synthesized compounds in the active site of α-glucosidase and to explain structure-activity relationships of the most potent compounds and their corresponding analogs.
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Affiliation(s)
- Nafise Asemanipoor
- Department of Chemistry Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Maryam Mohammadi-Khanaposhtani
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Shahram Moradi
- Department of Chemistry Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Mahbobeh Vahidi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Asadi
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences, Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mahmood Biglar
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Haleh Hamedifar
- CinnaGen Medical Biotechnology Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Mir Hamed Hajimiri
- Nano Alvand Company, Avicenna Tech Park, Tehran University of Medical Sciences, Tehran 1439955991, Iran.
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133
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Hameed A, Hameed A, Farooq T, Noreen R, Javed S, Batool S, Ahmad A, Gulzar T, Ahmad M. Evaluation of structurally different benzimidazoles as priming agents, plant defence activators and growth enhancers in wheat. BMC Chem 2019; 13:29. [PMID: 31384777 PMCID: PMC6661826 DOI: 10.1186/s13065-019-0546-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 02/26/2019] [Indexed: 11/10/2022] Open
Abstract
Priming is a valuable, facile and well-established technique used to enhance seed quality to achieve rapid germination, establishment of stress resistance and improvement of crop yields. Different natural and synthetic priming agents have been used for better crop performance and abiotic stress management. In this study, four different benzimidazoles were selected as priming agents and their comparative effects were evaluated on different biochemical attributes including total soluble protein, total oxidant status, MDA contents, antioxidant enzymes (SOD, POD) and hydrolytic enzymes (protease, estrases) compared to control. Treatments with 2-thio-1-H-benzimidazole reduced total soluble proteins and increased total oxidant status significantly but no considerable effect was observed on other parameters. Priming with 2-(4-chlorophenyl)-1-H-benzimidazole considerably increased the total oxidant status and a little improvement was observed in total soluble proteins. Seeds primed with 1-H-benzimidazole showed a noticeable decrease in the protease activity while all other priming treatments were unable to induce any detectable change compared to control. The treatment with 2-(4-methoxyphenyl)-1-H-benzimidazole induced maximum reduction in MDA contents and POD activity. Moreover, all benzimidazole priming treatments reduced mean germination time, increased germination percentage and germination rate of wheat seeds.
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Affiliation(s)
- Arruje Hameed
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Amjad Hameed
- Nuclear Institute for Agriculture and Biology (NIAB), Jhang Road, P.O. Box 128, Faisalabad, Pakistan
| | - Tahir Farooq
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Razia Noreen
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Sadia Javed
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Shaheera Batool
- Department of Biochemistry, Multan Institute of Health Sciences, Multan, Pakistan
| | - Ashfaq Ahmad
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Tahsin Gulzar
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Matloob Ahmad
- Department of Chemistry, Government College University, Faisalabad, Pakistan
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134
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Fonkui TY, Ikhile MI, Njobeh PB, Ndinteh DT. Benzimidazole Schiff base derivatives: synthesis, characterization and antimicrobial activity. BMC Chem 2019; 13:127. [PMID: 31728454 PMCID: PMC6842205 DOI: 10.1186/s13065-019-0642-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 10/19/2019] [Indexed: 12/26/2022] Open
Abstract
A series of Schiff bases (3.a–f) bearing benzimidazole moiety was successfully synthesized in ethanol by refluxing Oct-2-ynoic acid (1,3-dihydrobenzimidazole-2-ylidene)amide with substituted amines. Fourier transform infrared (FTIR), ultra violet light (UV–VIS), elemental analysis, proton (1H) and carbon (13C) nuclear magnetic resonance spectroscopy were used to characterize the newly synthesized Schiff bases. Micro dilution method was used to determine the minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of the Schiff bases, against 14 human pathogenic bacteria (8 Gram negative and 6 Gram positive) and against 7 fungal strains (5 Aspergillus and 2 Fusarium) representatives. Antimalarial activity against Plasmodium falciparum and antitrypanosomal property against Trypanosoma brucei was studied in vitro at a single dose concentration of the Schiff bases. Cytotoxicity of the Schiff bases was assessed against human cervix adenocarcinoma (HeLa) cells. Results obtained show that the newly synthesized Schiff bases are very potent antimicrobial agents. Gram negative bacteria Klebsiella pneumonia and Escherichia coli were more affected on exposure to Compounds 3.c–f (MIC 7.8 µg/mL) which in turn exhibited more antibacterial potency than nalidixic acid reference drug that displayed MICs between 64 and 512 µg/mL against K. pneumonia and E. coli respectively. The test compounds also demonstrated high cytotoxic effect against Aspergillus flavus and Aspergillus carbonarius as they displayed MFC 7.8 and 15.6 µg/mL. Compound 3.c exhibited the highest fungicidal property from this series with MFC alternating between 7.8 and 15.6 µg/mL against the investigated strains. The malarial activity revealed Compounds 3.c and 3.d as the more potent antiplasmodial compounds in this group exhibiting 95% and 85% growth inhibition respectively. The IC50 of Compounds 3.c and 3.d were determined and found to be IC50 26.96 and 28.31 µg/mL respectively. Compound 3.a was the most cytotoxic agent against HeLa cells in this group with 48% cell growth inhibition. Compounds 3.c, 3.d and 3.f were biocompatible with HeLa cells and displayed low toxicity. With a very low cytotoxic effect against HeLa, compound 3.c stands out to be a very good antiparasitic agent and consideration to further evaluate the candidate drug against others cell lines is necessary.
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Affiliation(s)
- Thierry Youmbi Fonkui
- 1Department of Biotechnology and Food Technology, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Johannesburg, 2028 South Africa
| | - Monisola Itohan Ikhile
- 2Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Johannesburg, 2028 South Africa
| | - Patrick Berka Njobeh
- 1Department of Biotechnology and Food Technology, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Johannesburg, 2028 South Africa
| | - Derek Tantoh Ndinteh
- 2Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Johannesburg, 2028 South Africa
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135
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Dokla EME, Abutaleb NS, Milik SN, Li D, El-Baz K, Shalaby MAW, Al-Karaki R, Nasr M, Klein CD, Abouzid KAM, Seleem MN. Development of benzimidazole-based derivatives as antimicrobial agents and their synergistic effect with colistin against gram-negative bacteria. Eur J Med Chem 2019; 186:111850. [PMID: 31735572 DOI: 10.1016/j.ejmech.2019.111850] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [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: 09/17/2019] [Revised: 10/17/2019] [Accepted: 11/03/2019] [Indexed: 12/14/2022]
Abstract
Gram-negative bacteria pose a distinctive risk worldwide, especially with the evolution of major resistance to carbapenems, fluoroquinolones and colistin. Therefore, development of new antibacterial agents to target Gram-negative infections is of utmost importance. Using phenotypic screening, we synthesized and tested thirty-one benzimidazole derivatives against E. coli JW55031 (TolC mutant strain). Compound 6c showed potent activity with MIC value of 2 μg/ml, however, it lacked activity against several Gram-negative microbes with intact efflux systems, including E. coli BW25113 (wild-type strain). Combination of 6c with colistin partially restored its antibacterial activity against wild strains (MIC range, 8-16 μg/ml against E. coli, K. pneumoniae, A. baumannii, and P. aeruginosa). 6c exhibited no cytotoxicity against two mammalian cell lines. Therefore, compound 6c represents a promising lead for further optimization to overcome Gram-negative resistance alone or in combination therapy.
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Affiliation(s)
- Eman M E Dokla
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt.
| | - Nader S Abutaleb
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, 47907, USA
| | - Sandra N Milik
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt; Medicinal Chemistry, Institute of Pharmacy and Molecular Biotechnology (IPMB), Heidelberg University, Im Neuenheimer Feld 364, 69120, Heidelberg, Germany
| | - Daoyi Li
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, 47907, USA
| | - Karim El-Baz
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt; Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangro 14-gil 5, Seongbuk-gu, Seoul, 136-791, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology (UST), Gajungro 217, Youseong-gu, Daejeon 305-350, Republic of Korea
| | - Menna-Allah W Shalaby
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt
| | - Rawan Al-Karaki
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Mutah University, Karak, 61710, Jordan
| | - Maha Nasr
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt
| | - Christian D Klein
- Medicinal Chemistry, Institute of Pharmacy and Molecular Biotechnology (IPMB), Heidelberg University, Im Neuenheimer Feld 364, 69120, Heidelberg, Germany
| | - Khaled A M Abouzid
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt; Department of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, 32897, Egypt
| | - Mohamed N Seleem
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, 47907, USA; Purdue Institute of Inflammation, Immunology, and Infectious Disease, West Lafayette, IN, 47907, USA.
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136
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Panahi P, Nouruzi N, Doustkhah E, Mohtasham H, Ahadi A, Ghiasi-Moaser A, Rostamnia S, Mahmoudi G, Khataee A. Zirconium based porous coordination polymer (PCP) bearing organocatalytic ligand: A promising dual catalytic center for ultrasonic heterocycle synthesis. Ultrason Sonochem 2019; 58:104653. [PMID: 31450335 DOI: 10.1016/j.ultsonch.2019.104653] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/11/2019] [Accepted: 06/20/2019] [Indexed: 06/10/2023]
Abstract
Herein, the efficient role of ultrasonic irradiation both in synthesis of Zr based porous coordination polymer (Zr-PCP) nanoparticles and boosting its catalytic activity, towards the benzimidazoles synthesis is represented. We use an amine based ligand (amino-terephthalate) for PCP and we exhibit that it can have a synergistic catalytic activity. In this work, a unique nano-engineering of cooperative and synergistic catalytic activity of zirconium, as a Lewis acid, and aminophenylene, as an organocatalyst, in the synthesis of heterocycles is presented for the synthesis of benzimidazole from cascade reaction of phenylene diamine with aldehyde at ambient temperature. Zr and amine groups of the Zr-PCP are active catalytic sites which in combination with the ultrasonic irradiation leads to a high selectivity and rapid catalytic production of benzylimidazoles. N2 adsorption-desorption along with BJH analyses confirm the microporosity of the catalyst and recyclability shows that the catalyst is green and sustainable heterogeneous microporous catalyst.
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Affiliation(s)
- Paria Panahi
- Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, PO Box 55181-83111, Maragheh, Iran
| | - Nasrin Nouruzi
- Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, PO Box 55181-83111, Maragheh, Iran
| | - Esmail Doustkhah
- Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, PO Box 55181-83111, Maragheh, Iran; International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Hamed Mohtasham
- Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, PO Box 55181-83111, Maragheh, Iran
| | - Arefeh Ahadi
- Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, PO Box 55181-83111, Maragheh, Iran
| | - Azra Ghiasi-Moaser
- Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, PO Box 55181-83111, Maragheh, Iran
| | - Sadegh Rostamnia
- Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, PO Box 55181-83111, Maragheh, Iran.
| | - Ghodrat Mahmoudi
- Department of Chemistry, Faculty of Science, University of Maragheh, PO Box 55181-83111, Maragheh, Iran.
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Materials Science and Nanotechnology Engineering, Faculty of Engineering, Near East University, 99138 Nicosia, Mersin 10, Turkey.
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137
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Jian-Song, Gao QL, Wu BW, Li D, Shi L, Zhu T, Lou JF, Jin CY, Zhang YB, Zhang SY, Liu HM. Novel tertiary sulfonamide derivatives containing benzimidazole moiety as potent anti-gastric cancer agents: Design, synthesis and SAR studies. Eur J Med Chem 2019; 183:111731. [PMID: 31577977 DOI: 10.1016/j.ejmech.2019.111731] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 09/08/2019] [Accepted: 09/21/2019] [Indexed: 12/30/2022]
Abstract
With the expectation to find out new anti-gastric cancer agents with high efficacy and selectivity, a series of novel tertiary sulfonamide derivatives were synthesized and the anti-cancer activity was studied in three selected cancer cell lines (MGC-803, PC-3, MCF-7) in vitro. Some of the synthesized compounds could significantly inhibit the proliferation of these tested cancer cells and were more potent than the positive control (5-Fu). The structure-activity relationship of tertiary sulfonamide derivatives was explored in this report. Among the tested compounds, compound 13g containing benzimidazole moiety showed the best anti-proliferation activities against MGC-803 cells (IC50 = 1.02 μM), HGC-27 cells (IC50 = 1.61 μM), SGC-7901 (IC50 = 2.30 μM) cells as well as the good selectivity between the cancer and normal cells. Cellular mechanism studies elucidated compound 13g inhibited the colony formation of gastric cancer cell lines. Meanwhile, compound 13g arrested cell cycle at G2/M phase and induced cell apoptosis. Mechanistically, compound 13g markedly decreased p-Akt and p-c-Raf expression, which revealed that compound 13g targeted gastric cancer cell lines via interfering with AKT/mTOR and RAS/Raf/MEK/ERK pathways. All the findings suggest that compound 13g might be a valuable lead compound for the anti-gastric cancer agents.
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Affiliation(s)
- Jian-Song
- School of Pharmaceutical Sciences & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou, 450001, China
| | - Qiu-Lei Gao
- School of Pharmaceutical Sciences & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou, 450001, China
| | - Bo-Wen Wu
- School of Pharmaceutical Sciences & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou, 450001, China
| | - Dong Li
- School of Pharmaceutical Sciences & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou, 450001, China
| | - Lei Shi
- School of Pharmaceutical Sciences & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou, 450001, China
| | - Ting Zhu
- School of Pharmaceutical Sciences & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou, 450001, China
| | - Jian-Feng Lou
- School of Pharmaceutical Sciences & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou, 450001, China
| | - Cheng-Yun Jin
- School of Pharmaceutical Sciences & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou, 450001, China
| | - Yan-Bing Zhang
- School of Pharmaceutical Sciences & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou, 450001, China
| | - Sai-Yang Zhang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China; School of Pharmaceutical Sciences & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, Zhengzhou, 450001, China; Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, 450001, China.
| | - Hong-Min Liu
- School of Pharmaceutical Sciences & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou, 450001, China
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138
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Sargison ND, MacLeay M, Morrison AA, Bartley DJ, Evans M, Chaudhry U. Development of amplicon sequencing for the analysis of benzimidazole resistance allele frequencies in field populations of gastrointestinal nematodes. Int J Parasitol Drugs Drug Resist 2019; 10:92-100. [PMID: 31425900 PMCID: PMC6708983 DOI: 10.1016/j.ijpddr.2019.08.003] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 08/12/2019] [Accepted: 08/12/2019] [Indexed: 01/22/2023]
Abstract
Anthelmintic resistant gastrointestinal helminths have become a major cause of poor health in sheep and goats. Sensitive and specific molecular markers are needed to monitor the genotypic frequency of resistance in field parasite populations. Gastrointestinal nematode resistance to benzimidazole is caused by a mutation in one of three positions within the isotype 1 β-tubulin gene. In the absence of markers for resistance to the other broad spectrum anthelmintic classes, these provide a relevant study example. Determination of the prevalence of these single nucleotide polymorphisms in field nematode populations can be impractical using conventional molecular methods to examine individual parasites; which can be laborious and lack sensitivity in determining low levels of resistance in parasite populations. Here, we report the development of a novel method based on an Illumina MiSeq deep amplicon sequencing platform to sequence the isotype 1 β-tubulin locus of the small ruminant gastrointestinal nematode, Teladorsagia circumcincta, and determine the frequency of the benzimidazole resistance mutations. We validated the method by assessing sequence representation bias, comparing the results of Illumina MiSeq and pyrosequencing, and applying the method to populations containing known proportions of resistant and susceptible larvae. We applied the method to field samples collected from ewes and lambs on over a period of one year on three farms, each highlighting different aspects of sheep management and approaches to parasite control. The results show opportunities to build hypotheses with reference to selection pressures leading to differences in resistance allele frequencies between sampling dates, farms and ewes or lambs, and to consider the impact of their genetic fixation or otherwise. This study provides proof of concept of a practical, accurate, sensitive and scalable method to determine frequency of anthelmintic resistance mutations in gastrointestinal nematodes in field studies and as a management tool for livestock farmers.
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Affiliation(s)
- Neil D Sargison
- University of Edinburgh Roslin Institute and Royal (Dick) School of Veterinary Studies, Easter Bush Veterinary Centre, Roslin, Midlothian, EH25 9RG, United Kingdom
| | - Madison MacLeay
- University of Edinburgh Roslin Institute and Royal (Dick) School of Veterinary Studies, Easter Bush Veterinary Centre, Roslin, Midlothian, EH25 9RG, United Kingdom
| | - Alison A Morrison
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ, United Kingdom
| | - David J Bartley
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ, United Kingdom
| | - Mike Evans
- University of Edinburgh Roslin Institute and Royal (Dick) School of Veterinary Studies, Easter Bush Veterinary Centre, Roslin, Midlothian, EH25 9RG, United Kingdom
| | - Umer Chaudhry
- University of Edinburgh Roslin Institute and Royal (Dick) School of Veterinary Studies, Easter Bush Veterinary Centre, Roslin, Midlothian, EH25 9RG, United Kingdom.
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Boggu PR, Kim Y, Jung SH. Discovery of benzimidazole analogs as a novel interleukin-5 inhibitors. Eur J Med Chem 2019; 181:111574. [PMID: 31400705 DOI: 10.1016/j.ejmech.2019.111574] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/19/2019] [Accepted: 07/29/2019] [Indexed: 11/30/2022]
Abstract
A series of novel hydroxyethylaminomethylbenzimidazole analogs 5a-y were synthesized and evaluated for their IL-5 inhibitory activity using pro-B Y16 cell line. Among them, 2-(((4-(cyclohexylmethoxy)-1H-benzo[d]imidazol-2-yl)methyl)amino)butan-1-ol (5e, 94.3% inhibition at 30 μM, IC50 = 3.5 μM, cLogP = 4.132) and 3-cyclohexyl-2-(((4-(cyclohexylmethoxy)-1H-benzo[d]imidazol-2-yl)methyl)amino) propan-1-ol (5k, 94.7% inhibition at 30 μM, IC50 = 5.0 μM, cLogP = 6.253) showed the most potent inhibitory activity. The essential feature of SAR (Fig. 5) indicated that the chromenone ring can be replaced by a benzimidazole ring to maintain the inhibitory activity. In addition, the hydroxyethylaminomethyl group was suitable for the IL-5 inhibitory activity. Moreover, the hydrophobic substituents on carbon play an important role in the IL-5 inhibitory activity of these analogs. However, N-substituted analogs did not improve inhibitory activity. In addition, MTT assay of 5e and 5k with normal B lymphoblasts revealed that they had no significant effects on cell viability.
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Affiliation(s)
- Pulla Reddy Boggu
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon, 34134, Republic of Korea; School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Youngsoo Kim
- College of Pharmacy, Chungbuk National University, Cheongju, 19421, Republic of Korea
| | - Sang-Hun Jung
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon, 34134, Republic of Korea.
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140
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Ko YG, Na WS, Mayank, Singh N, Jang DO. Triazole-Coupled Benzimidazole-Based Fluorescent Sensor for Silver, Bromide, and Chloride Ions in Aqueous Media. J Fluoresc 2019; 29:945-952. [PMID: 31359227 DOI: 10.1007/s10895-019-02407-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 07/02/2019] [Indexed: 11/29/2022]
Abstract
A triazole-coupled benzimidazole-based fluorescent probe S1 with nitrogen and oxygen binding sites was synthesized and its properties as a probe for cations were investigated. Probe S1 was found to be highly selective toward Ag+ ions in aqueous media. The fluorescence intensity of S1 was quenched as a function of the concentration of Ag+ ions in the presence of potential interfering cations with a detection limit of 2.70 μM. The resulting S1-Ag+ complex was subsequently studied for its anion recognition abilities and found to recognize Br- and Cl- ions, revealing the concentration-dependent fluorescence enhancement with detection limits of 22.2 and 23.0 μM, respectively. Revival of the fluorescence profile of probe S1 indicated that Ag+ ion was released from the S1-Ag+ complex. Probe S1 is a sensor that can be single-handedly utilized for the qualitative and quantitative determination of Ag+, Br-, and Cl- ions in aqueous media.
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Affiliation(s)
- Yoon Gun Ko
- Department of Chemistry, Yonsei University, Wonju, 26493, Republic of Korea
| | - Won Sik Na
- Department of Chemistry, Yonsei University, Wonju, 26493, Republic of Korea
| | - Mayank
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab, 140001, India
| | - Narinder Singh
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab, 140001, India.
| | - Doo Ok Jang
- Department of Chemistry, Yonsei University, Wonju, 26493, Republic of Korea.
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141
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Singh I, Luxami V, Paul K. Effective synthesis of benzimidazoles-imidazo[1,2-a]pyrazine conjugates: A comparative study of mono-and bis-benzimidazoles for antitumor activity. Eur J Med Chem 2019; 180:546-561. [PMID: 31344614 DOI: 10.1016/j.ejmech.2019.07.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 07/02/2019] [Accepted: 07/12/2019] [Indexed: 01/12/2023]
Abstract
A novel series of 6-substituted-8-(1-cyclohexyl-1H-benzo[d]imidazole-6-yl)imidazo[1,2-a]pyrazine and 6-substituted-8-(1-benzyl-1H-benzo[d]imidazole-6-yl)imidazo[1,2-a]pyrazine is first time synthesized and screen in vitro biological activity for 60 human cancer cell lines representing nine different cancer types. Derivatives 10 and 36 show antitumor activity for all tested cell lines, display comparable full panel mean-graph midpoint growth inhibition (MG_MID GI50) values of 2.10 and 2.23 μM, respectively. Furthermore, these derivatives show strong binding interactions with DNA and bovine serum albumin (BSA), studied through absorption, emission, and circular dichroism techniques. These spectroscopic studies reveal that imidazo[1,2-a]pyrazine-benzimidazoles 10 and 36, intercalate with ct-DNA as a leading interaction for fundamental biologically significant effects, with monobenzimidazole show better activity than bisbenzimidazole. These experiments have confirmed that the imidazo[1,2-a]pyrazine and benzimidazole moieties are efficient pharmacophores to trigger binding to DNA. These compounds have also interacted with bovine serum albumin protein that demonstrating high values of binding constant.
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Affiliation(s)
- Iqubal Singh
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala, 147001, India
| | - Vijay Luxami
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala, 147001, India
| | - Kamaldeep Paul
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala, 147001, India.
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142
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Mortezaei S, Afgar A, Mohammadi MA, Mousavi SM, Sadeghi B, Harandi MF. The effect of albendazole sulfoxide on the expression of miR-61 and let-7 in different in vitro developmental stages of Echinococcus granulosus. Acta Trop 2019; 195:97-102. [PMID: 31051116 DOI: 10.1016/j.actatropica.2019.04.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 04/16/2019] [Accepted: 04/29/2019] [Indexed: 12/30/2022]
Abstract
Albendazole, as the main anti-echinococcal benzimidazole, has demonstrated safe and effective therapeutic outcomes in the treatment of echinococcosis. The emergence of resistance or reduced response to albendazole sulfoxide (ABZ_SOX) and other benzimidazoles have been demonstrated in several parasitic helminths of medical and veterinary importance. As the genetic makeup and miRNA profile of helminths affects their response to albendazole sulfoxide, the present study was conducted to investigate the expression of miRNAs in different developmental stages of Echinococcus granulosus exposed to albendazole sulfoxide in vitro. Different developmental stages of the helminth were obtained from in vitro cultured E. granulosus in monophasic and diphasic media. In both ABZ-SOX-treated and control parasites miRNAs were extracted from microcysts, intact protoscoleces and strobilated worms with one and three segments. Expression of two miRNAs, let-7 and miR-61 was evaluated using RT-qPCR for each stage. Results of the present study revealed significant differential expression of both let-7 and miR-61 at different drug concentrations. A significant difference of let-7 expression was observed between the strobilated and metacestode stages of E. granulosus exposed to ABZ-SOX. In the treated protoscoleces, let-7 expression was significantly reduced in the presence of ABZ-SOX at 1000 μg/ml concentration. In contrast higher expression levels were documented in the segmented worms. In the microcysts exposed to different drug concentrations a significant decline of miR-61 expression was demonstrated. Also, a significant increase in expression of miR-61 was observed in one proglottid worms as well as the protoscoleces. Under high drug concentration or long-term exposure of the protoscoleces to ABZ-SOX significantly higher miR-61 expression was observed compared to the controls. Our findings suggested that under in vitro benzimidazole exposure the expression of two E. granulosus miRNAs were significantly affected in the microcyst stage. This study presents the first evidence of the nature of benzimidazole effects on miRNA expression in platyhelminths.
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143
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Yuan X, Yang Q, Liu T, Li K, Liu Y, Zhu C, Zhang Z, Li L, Zhang C, Xie M, Lin J, Zhang J, Jin Y. Design, synthesis and in vitro evaluation of 6-amide-2-aryl benzoxazole/ benzimidazole derivatives against tumor cells by inhibiting VEGFR-2 kinase. Eur J Med Chem 2019; 179:147-165. [PMID: 31252306 DOI: 10.1016/j.ejmech.2019.06.054] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [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: 04/05/2019] [Revised: 06/19/2019] [Accepted: 06/19/2019] [Indexed: 12/24/2022]
Abstract
Herein, we have carried out a structural optimization campaign to discover the novel anti-tumor agents with our previously screened YQY-26 as the hit compound. A library of thirty-seven 6-amide-2-aryl benzoxazole/benzimidazole derivatives has been designed and synthesized based on the highly conserved active site of VEGFR-2. Several title compounds exhibited selective inhibitory activities against VEGFR-2 than EGFR kinases, which also displayed selective anti-proliferation potency against the HUVEC and HepG2 than the A549 and MDA-MB-231 cancer cell lines. The newly synthesized compounds were evaluated for anti-angiogenesis capability by chick chorioallantoic membrane (CAM) assay. Among them, compounds 9d showed the most potent anti-angiogenesis ability (79% inhibition at 10 nM/eggs), the efficient cytotoxic activities (in vitro against the HUVEC and HepG2 cell lines with IC50 values of 1.47 and 2.57 μM, respectively), and excellent VEGFR-2 kinase inhibition (IC50 = 0.051 μM). The molecular docking analysis revealed that compound 9d is a Type II inhibitor of VEGFR-2 kinase. These results indicated that the 6-amide-2-arylbenzoxazole and 6-amide-2-aryl benzimidazole derivatives are promising inhibitors of VEGFR-2 kinase for the potential treatment of anti-angiogenesis.
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Affiliation(s)
- Xu Yuan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, PR China
| | - Qingyi Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, PR China; School of Clinical Medicine, Dehong Vocational College, Mangshi, 678400, China
| | - Tongyan Liu
- Laboratory of Molecular Genetics of Aging and Tumor, Medical School, Kunming University of Science and Technology, Kunming, 650500, PR China
| | - Ke Li
- Biomedical Department, Yunnan Cancer Hospital, The Third Affiliated Hospital of Kunming Medical University, Kunming, 650118, PR China.
| | - Yuwen Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, PR China
| | - Changcheng Zhu
- Institute of Drug Research and Development, Kunming Pharmaceutical Corporation, Kunming, 650100, PR China
| | - Zhiyun Zhang
- Department of Anorectal, Kunming Municipal Hospital of Traditional Chinese Medicine, Kunming, 650011, PR China
| | - Linghua Li
- Department of Anorectal, Kunming Municipal Hospital of Traditional Chinese Medicine, Kunming, 650011, PR China
| | - Conghai Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, PR China
| | - Mingjin Xie
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, PR China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, PR China.
| | - Jihong Zhang
- Laboratory of Molecular Genetics of Aging and Tumor, Medical School, Kunming University of Science and Technology, Kunming, 650500, PR China.
| | - Yi Jin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, PR China.
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Lachenmayer A, Gebbers D, Gottstein B, Candinas D, Beldi G. Elevated incidence of alveolar echinococcosis in immunocompromised patients. Food Waterborne Parasitol 2019; 16:e00060. [PMID: 32095630 PMCID: PMC7034048 DOI: 10.1016/j.fawpar.2019.e00060] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 05/21/2019] [Accepted: 05/21/2019] [Indexed: 02/06/2023] Open
Abstract
Introduction Recent experimental data has revealed that the course of alveolar echinococcosis (AE) depends on adaptive immunity. For this study, we aimed to analyze the incidence and outcome of AE in immunocompromised humans. Material and methods Retrospective analysis of 131 patients with a median age of 54 years treated for AE between 1971 and 2017 at a Swiss tertiary referral Centre. Fifty-two percent were females and 65 patients (50%) were diagnosed incidentally. Fourteen patients (16%) were operated on laparoscopically. Overall, median follow-up was 48 months. Results New diagnoses have increased fourfold in immunocompetent and tenfold in immunocompromised patients in the past decade (p ≤ 0.005). Forty-one patients (31.3%) had co-existing or previous immunosuppressive conditions including 16 malignancies (36%), 11 auto-immune diseases or immunosuppressive therapies (31%), 5 infectious diseases (11%), 4 chronic asthma conditions (9%), 2 previous transplantations (4%) and 4 other immunocompromising conditions (9%). Serum levels of anti-Em18, −Em2 and -EgHF antibodies were neither associated with immunocompetence at diagnosis nor during follow-up, but significantly decreased after treatment with benzimidazole (n = 43) or surgery (n = 88) in all patients. Adjuvant therapy for ≥1 year (p = 0.007) with benzimidazole and resection status (R0) (p = 0.002) were both correlated with recurrence-free survival. Survival at 5 and 10 years after surgery was 97% and 94%, respectively, and after conservative treatment 91% and 73%, respectively. Curative surgery (p = 0.014) and immunocompetence (p = 0.048) correlated significantly with overall survival. Conclusion The incidence of human AE has increased over the last 2 decades with surgical interventions resulting in excellent outcomes. We have observed an association of immunosuppressive conditions with both incidence and survival of AE eventually justifying the implementation of a screening program for patients at risk in endemic regions. Alveolar echinococcosis incidence increased significantly in Switzerland. Immunosuppression may lead to an increased susceptibility for the disease. Coexisting immunosuppressive conditions lead to worse survival of AE. Adjuvant treatment with benzimidazole increases recurrence-free survival. Resections with sufficient safety margin improve recurrence-free survival.
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Affiliation(s)
- A Lachenmayer
- Department of Visceral Surgery and Medicine, University Hospital Bern, University of Bern, Bern, Switzerland
| | - D Gebbers
- Department of Visceral Surgery and Medicine, University Hospital Bern, University of Bern, Bern, Switzerland
| | - B Gottstein
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Länggass-Strasse 122, 3012, Bern, Switzerland
| | - D Candinas
- Department of Visceral Surgery and Medicine, University Hospital Bern, University of Bern, Bern, Switzerland
| | - G Beldi
- Department of Visceral Surgery and Medicine, University Hospital Bern, University of Bern, Bern, Switzerland
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145
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Phapale D, Kushwaha A, Das D. A simple benzimidazole styryl-based colorimetric chemosensor for dual sensing application. Spectrochim Acta A Mol Biomol Spectrosc 2019; 214:111-118. [PMID: 30771591 DOI: 10.1016/j.saa.2019.02.009] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 01/25/2019] [Accepted: 02/04/2019] [Indexed: 06/09/2023]
Abstract
A new colorimetric styryl-benzimidazole based receptor to recognize more than one analyte trans-2-[4'-(dimethylamino)styryl]benzimidazole) (L1) has been synthesized and fully characterized by 13C and 1H NMR, elemental analysis, UV-vis spectroscopy, and HRMS. Investigation of sensing ability of receptor L1 was carried out in presence of multiple anions (Br-, CN-, Cl-, ClO4-, F-, HSO4-, PF6-, NO3-, S2-, OH-, AcO- and H2PO4-) and cations (Cu2+, Cr3+, Al3+, Mg2+, Cd2+, Ni2+, Fe3+, K+, Fe2+, Mn2+, Ag+, Hg2+, Ca2+, Co2+, Pb2+, Na+, and Zn2+) by using UV-vis spectroscopy. Receptor L1 showed colorimetric response towards only for HSO4- ion. Receptor L1-HSO4- interaction confirmed with the help of 1H NMR titration. Among various cations, L1 selectively sense the Cu2+ and Al3+ with the drastic colour change from yellow to green and dark yellow respectively. The stoichiometric binding ratio of L1 with HSO4-, Cu2+, and Al3+ found to be 1:1 by jobs method and HRMS data proved the complex formation between L1 and Cu2+/Al3+ with very low detection limit. In addition to explore practical applicability of L1, paper strips have been made and used to detect HSO4- and Cu2+ ions, respectively, up to 10 ppm level.
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Affiliation(s)
- Daulat Phapale
- Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Archana Kushwaha
- Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Dipanwita Das
- Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai 400019, India.
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146
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Santiago-Figueroa I, Lara-Bueno A, González-Garduño R, López-Arellano ME, de la Rosa-Arana JL, Maldonado-Simán EJ. Anthelmintic resistance in hair sheep farms in a sub-humid tropical climate, in the Huasteca Potosina, Mexico. Vet Parasitol Reg Stud Reports 2019; 17:100292. [PMID: 31303239 DOI: 10.1016/j.vprsr.2019.100292] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 04/21/2019] [Accepted: 04/22/2019] [Indexed: 11/21/2022]
Abstract
This is the first report about anthelmintic resistance (AR) in hair sheep farms determined in a sub-humid tropical climate, in an area known as Huasteca Potosina, Mexico. Faecal egg count reduction tests (FECRT) and egg hatch in vitro tests were conducted to identify the level of AR against benzimidazole (BZ) in parasitic gastrointestinal nematode (GIN) populations. An allele-specific polymerase chain reaction (AS-PCR) was performed to obtain a 250 bp band, indicating resistance, and a 550 bp band, indicating susceptibility to BZ. Macrocyclic lactones (ML) and imidazothiazole (IMZ) drugs were also tested with the FECRT. A PROBIT analysis was conducted using SAS to determine the 50% lethal doses (LD50) of the drugs according to the egg hatch in vitro test. Resistance to BZ and ML was found on all farms (0-70% effectiveness), whereas the susceptibility of nematodes to IMZ was detected with the FECRT (93-100% effectiveness). The LD50 was higher than the discriminating dose (0.1 μg ml-1) for BZ and confirmed AR to this anthelmintic; we also confirmed a high AR frequency with AS-PCR. Therefore, we suggest that strategic deworming should be performed to avoid the development of resistance to imidazothiazole.
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147
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Gaba M, Singh S, Mohan C, Dhingra R, Chauhan M, Rana P, Dhingra N. Design, Synthesis and Pharmacological Evaluation of Gastro- Protective Anti-inflammatory Analgesic Agents based on Dual Oxidative Stress / Cyclooxygenase Inhibition. Antiinflamm Antiallergy Agents Med Chem 2019; 19:268-290. [PMID: 30914035 DOI: 10.2174/1871523018666190325155244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 03/12/2019] [Accepted: 03/20/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Non-steroidal anti-inflammatory drugs (NSAIDs) derived local generation of reactive oxygen species (ROS) plays a crucial role in the formation of gastric ulceration. OBJECTIVE Therefore, anti-inflammatory analgesics with potent antioxidant activity could be a potential therapeutic strategy for the treatment of pain and inflammatory disorders without gastrointestinal (GI) side effects. METHODS In an effort to develop gastroprotective analgesic and anti-inflammatory agents, a series of 2-methylamino-substituted-1H-benzo[d] imidazol-1-yl) (phenyl) methanone derivatives were synthesized and evaluated in vitro for cyclooxygenase (COX) inhibition as well as anti-oxidant potential by the FRAP assay. The compounds with significant in vitro COX-1/COX-2 inhibitory activity and antioxidant activity were further screened in vivo for their anti-inflammatory and analgesic activities. Moreover, the ulcerogenic potential of test compounds was also studied. To gain insight into the plausible mode of interaction of compounds within the active sites of COX-1 and COX-2, molecular docking simulations were performed. RESULTS Among the various synthesized molecules, most of the compounds showed good cyclooxygenase inhibitory activity and efficient antioxidant activity in FRAP assay. After preliminary and indicative in vitro assays, three compounds exhibited most significant antiinflammatory and analgesic activity with better gastric tolerability during their in vivo evaluation. Ligand interaction studies indicated highest dock score -43.05 of 1,2- disubstituted benzimidazole derivatives in comparison to the reference ligand -30.70. Overall studies provided us (2-((4-methoxyphenylamino) methyl) -1h-benzo [d] imidazol- 1-yl) (phenyl) methanone as a lead with potent gastro-protective anti-inflammatory and analgesic activities that can be used for future research. CONCLUSION From the above results, it can be concluded that designing of multifunctional molecules with COX-1/COX-2 inhibitory and anti-oxidant activities could hold a great promise for further development of GI-safer NSAIDs.
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Affiliation(s)
- Monika Gaba
- Department of Pharmaceutical Sciences, ASBASJSM College of Pharmacy, Bela, Ropar, Punjab, India
| | - Sarbjot Singh
- Drug Discovery Research, Panacea Biotec Pvt. Ltd., Mohali, Punjab, India
| | - Chander Mohan
- Rayat-Bahra Institute of Pharmacy, Hoshiarpur, Punjab, India
| | - Richa Dhingra
- Department of Pharmaceutical Chemistry, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh-160014, India
| | - Monika Chauhan
- Department of Pharmaceutical Chemistry, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh-160014, India
| | - Priyanka Rana
- Department of Pharmaceutical Chemistry, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh-160014, India
| | - Neelima Dhingra
- Department of Pharmaceutical Chemistry, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh-160014, India
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148
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Pashirova TN, Zhukova NA, Lukashenko SS, Valeeva FG, Burilova EA, Sapunova AS, Voloshina AD, Mirgorodskaya AB, Zakharova LY, Sinyashin OG, Mamedov VA. Multi-targeted approach by 2-benzimidazolylquinoxalines-loaded cationic arginine liposomes against сervical cancer cells in vitro. Colloids Surf B Biointerfaces 2019; 178:317-328. [PMID: 30884347 DOI: 10.1016/j.colsurfb.2019.03.021] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 02/28/2019] [Accepted: 03/10/2019] [Indexed: 01/04/2023]
Abstract
Multi-targeted approaches for inhibition of сervical cancer cells in vitro were developed by implementing two different strategies and drug combination for creation of new therapeutic target agents and for nanotechnological-enhancement of intracellular delivery. New 2-benzimidazolylquinoxalines derivatives were synthesized and characterized by combining two different pharmacophores - benzimidazole and quinoxaline rings directly bonded in their structures. Spectrophotometric technique for determination of content of compounds in various media was developed to evaluate their solubility in water and micellar solutions of surfactants. The bioavailability of poorly water-soluble 2-benzimidazolylquinoxalines was improved by PEGylated liposomes as antitumor drug delivery carriers. 2-benzimidazolylquinoxalines-loaded PEGylated liposomes, with size close to 100 nm and negative zeta potential ranging from -13 mV to -27 mV, were time-stable at room temperature. The design of liposomal formulations for improving cellular uptake and in vitro antitumor efficacy was performed by modification of liposome surface with the new arginine surfactant. The cell viability of 2-benzimidazolylquinoxalines-loaded arginine liposomes on human cancer M-Hela cells was 16% at the concentration 0.15 mg/ml. Moreover, these liposomes showed a lower toxicity (40%) against normal human Gang liver cells both at the lowest and highest tested concentrations.
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Affiliation(s)
- Tatiana N Pashirova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation.
| | - Nataliya A Zhukova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
| | - Svetlana S Lukashenko
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
| | - Farida G Valeeva
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
| | - Evgenia A Burilova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
| | - Anastasia S Sapunova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
| | - Alexandra D Voloshina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
| | - Alla B Mirgorodskaya
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
| | - Lucia Y Zakharova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation; Kazan National Research Technological University, Karl Marx St., 68, Kazan, 420015, Russian Federation.
| | - Oleg G Sinyashin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
| | - Vakhid A Mamedov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
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149
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Kitchen S, Ratnappan R, Han S, Leasure C, Grill E, Iqbal Z, Granger O, O'Halloran DM, Hawdon JM. Isolation and characterization of a naturally occurring multidrug-resistant strain of the canine hookworm, Ancylostoma caninum. Int J Parasitol 2019; 49:397-406. [PMID: 30771359 DOI: 10.1016/j.ijpara.2018.12.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/07/2018] [Accepted: 12/12/2018] [Indexed: 10/27/2022]
Abstract
Soil-transmitted nematodes infect over a billion people and place several billion more at risk of infection. Hookworm disease is the most significant of these soil-transmitted nematodes, with over 500 million people infected. Hookworm infection can result in debilitating and sometimes fatal iron-deficiency anemia, which is particularly devastating in children and pregnant women. Currently, hookworms and other soil-transmitted nematodes are controlled by administration of a single dose of a benzimidazole to targeted populations in endemic areas. While effective, people are quickly re-infected, necessitating frequent treatment. Widespread exposure to anthelmintic drugs can place significant selective pressure on parasitic nematodes to generate resistance, which has severely compromised benzimidazole anthelmintics for control of livestock nematodes in many areas of the world. Here we report, to our knowledge, the first naturally occurring multidrug-resistant strain of the canine hookworm Ancylostoma caninum. We reveal that this isolate is resistant to fenbendazole at the clinical dosage of 50 mg/kg for 3 days. Our data shows that this strain harbors a fixed, single base pair mutation at amino acid 167 of the β-tubulin isotype 1 gene, and by using CRISPR/Cas9 we demonstrate that introduction of this mutation into the corresponding amino acid in the orthologous β-tubulin gene of Caenorhabditis elegans confers a similar level of resistance to thiabendazole. We also show that the isolate is resistant to the macrocyclic lactone anthelmintic ivermectin. Understanding the mechanism of anthelmintic resistance is important for rational design of control strategies to maintain the usefulness of current drugs, and to monitor the emergence of resistance. The isolate we describe represents the first multidrug-resistant strain of A. caninum reported, and our data reveal a resistance marker that can emerge naturally in response to heavy anthelminthic treatment.
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Affiliation(s)
- Shannon Kitchen
- Department of Microbiology, Immunology, and Tropical Medicine, Ross Hall, 2300 I St. NW, The George Washington University, Washington, DC 20052, USA
| | - Ramesh Ratnappan
- Department of Microbiology, Immunology, and Tropical Medicine, Ross Hall, 2300 I St. NW, The George Washington University, Washington, DC 20052, USA
| | - Suhao Han
- Department of Microbiology, Immunology, and Tropical Medicine, Ross Hall, 2300 I St. NW, The George Washington University, Washington, DC 20052, USA
| | - Caitlyn Leasure
- Department of Microbiology, Immunology, and Tropical Medicine, Ross Hall, 2300 I St. NW, The George Washington University, Washington, DC 20052, USA
| | - Emilia Grill
- Department of Microbiology, Immunology, and Tropical Medicine, Ross Hall, 2300 I St. NW, The George Washington University, Washington, DC 20052, USA
| | - Zahra Iqbal
- Department of Microbiology, Immunology, and Tropical Medicine, Ross Hall, 2300 I St. NW, The George Washington University, Washington, DC 20052, USA
| | - Olivia Granger
- Department of Microbiology, Immunology, and Tropical Medicine, Ross Hall, 2300 I St. NW, The George Washington University, Washington, DC 20052, USA
| | - Damien M O'Halloran
- Department of Biological Sciences, The George Washington University, SEH 6000, 800 22nd St NW, Washington, DC 20052, USA
| | - John M Hawdon
- Department of Microbiology, Immunology, and Tropical Medicine, Ross Hall, 2300 I St. NW, The George Washington University, Washington, DC 20052, USA.
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150
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Taherian E, Khodarahmi G, Khajouei MR, Hassanzadeh F, Dana N. Synthesis and cytotoxic evaluation of novel quinozalinone derivatives with substituted benzimidazole in position 3. Res Pharm Sci 2019; 14:247-254. [PMID: 31160902 PMCID: PMC6540925 DOI: 10.4103/1735-5362.258493] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Quinazolinone and benzimidazole are both fused heterocyclic compounds which have shown valuable biological properties including cytotoxic, antibacterial, and antifungal activities. In this study, a series of novel quinazolinone derivatives substituted with benzimidazole were synthesized in two parts. In the first part 2 - phenyl - 1H - benzimidazol - 6 - amine (4) was synthesized from the reaction of 4-nitro-o-phenylenediamine and benzoic acid. In the second part, new 3-(2-phenyl-1H benzoimidazol-5-yl)- 3H-quinazolin-4-one derivatives (8a-8f) were also prepared. Finally compound 4 was reacted with the different benzoxazinone derivatives (8a-8f) to give the target compounds. The structures of the synthesized compounds were confirmed by IR and 1HNMR. Cytotoxic activities of the final compounds were assessed at 100, 200, 300, 400, and 500 μM against MCF-7 and HeLa cell lines using the MTT colorimetric assay. Almost all compounds exhibited good cytotoxic activity against both cell lines. Compound 9d demonstrated the highest cytotoxic activity against MCF7 and Hela cell lines with IC50 70 μM and 50 μM, respectively.
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Affiliation(s)
- Elham Taherian
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Science, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Ghadamali Khodarahmi
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Science, Isfahan University of Medical Sciences, Isfahan, I.R. Iran.,Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Science, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Marzieh Rahmani Khajouei
- Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Science, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Farshid Hassanzadeh
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Science, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Nasim Dana
- Physiology Research Center, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
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