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Georgiadis D, Skoulikas N, Papakyriakou A, Stratikos E. Phosphinic Peptides as Tool Compounds for the Study of Pharmacologically Relevant Zn-Metalloproteases. ACS Pharmacol Transl Sci 2022; 5:1228-1253. [PMID: 36524013 PMCID: PMC9745897 DOI: 10.1021/acsptsci.2c00183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Indexed: 11/29/2022]
Abstract
Phosphinic peptides constitute an important class of bioactive compounds that have found a wide range of applications in the field of biology and pharmacology of Zn-metalloproteases, the largest family of proteases in humans. They are designed to mimic the structure of natural substrates during their proteolysis, thus acting as mechanism-based, transition state analogue inhibitors. A combination of electrostatic interactions between the phosphinic acid group and the Zn cation as well as optimal noncovalent enzyme-ligand interactions can result in both high binding affinity for the desired target and selectivity against other proteases. Due to these unique properties, phosphinic peptides have been mainly employed as tool compounds for (a) the purposes of rational drug design by serving as ligands in X-ray crystal structures of target enzymes and allowing the identification of crucial interactions that govern optimal molecular recognition, and (b) the delineation of biological pathways where Zn-metalloproteases are key regulators. For the latter objective, inhibitors of the phosphinopeptidic type have been used either unmodified or after being transformed to probes of various types, thus expanding the arsenal of functional tools available to researchers. The aim of this review is to summarize all recent research achievements in which phosphinic peptides have played a central role as tool compounds in the understanding of the mechanism and biological functions of Zn-metalloproteases in both health and disease.
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Affiliation(s)
- Dimitris Georgiadis
- Department
of Chemistry, National and Kapodistrian
University of Athens, GR-15784 Athens, Greece
| | - Nikolaos Skoulikas
- Department
of Chemistry, National and Kapodistrian
University of Athens, GR-15784 Athens, Greece
| | - Athanasios Papakyriakou
- National
Centre for Scientific Research “Demokritos”, Agia Paraskevi GR-15341 Athens, Greece
| | - Efstratios Stratikos
- Department
of Chemistry, National and Kapodistrian
University of Athens, GR-15784 Athens, Greece
- National
Centre for Scientific Research “Demokritos”, Agia Paraskevi GR-15341 Athens, Greece
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2
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Hou W, Xu H. Incorporating Selenium into Heterocycles and Natural Products─From Chemical Properties to Pharmacological Activities. J Med Chem 2022; 65:4436-4456. [PMID: 35244394 DOI: 10.1021/acs.jmedchem.1c01859] [Citation(s) in RCA: 75] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Selenium (Se)-containing compounds have emerged as potential therapeutic agents for the treatment of a range of diseases. Through tremendous effort, considerable knowledge has been acquired to understand the complex chemical properties and biological activities of selenium, especially after its incorporation into bioactive molecules. From this perspective, we compiled extensive literature evidence to summarize and critically discuss the relationship between the pharmacological activities and chemical properties of selenium compounds and the strategic incorporation of selenium into organic molecules, especially bioactive heterocycles and natural products. We also provide perspectives regarding the challenges in selenium-based medicinal chemistry and future research directions.
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Affiliation(s)
- Wei Hou
- College of Pharmaceutical Science and Institute of Drug Development and Chemical Biology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hongtao Xu
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
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3
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Bijian K, Wernic D, Nivedha AK, Su J, Lim FPL, Miron CE, Amzil H, Moitessier N, Alaoui-Jamali MA. Novel Aurora A and Protein Kinase C (α, β1, β2, and θ) Multitarget Inhibitors: Impact of Selenium Atoms on the Potency and Selectivity. J Med Chem 2022; 65:3134-3150. [PMID: 35167283 DOI: 10.1021/acs.jmedchem.1c01031] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Aurora kinases and protein kinase C (PKC) have been shown to be involved in different aspects of cancer progression. To date, no dual Aurora/PKC inhibitor with clinical efficacy and low toxicity is available. Here, we report the identification of compound 2e as a potent small molecule capable of selectively inhibiting Aurora A kinase and PKC isoforms α, β1, β2 and θ. Compound 2e demonstrated significant inhibition of the colony forming ability of metastatic breast cancer cells in vitro and metastasis development in vivo. In vitro kinase screening and molecular modeling studies revealed the critical role of the selenium-containing side chains within 2e, where selenium atoms were shown to significantly improve its selectivity and potency by forming additional interactions and modulating the protein dynamics. In comparison to other H-bonding heteroatoms such as sulfur, our studies suggested that these selenium atoms also confer more favorable PK properties.
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Affiliation(s)
- Krikor Bijian
- Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Departments of Medicine and Oncology, McGill University, Montreal, Quebec H3A 0B8, Canada
| | - Dominik Wernic
- Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Departments of Medicine and Oncology, McGill University, Montreal, Quebec H3A 0B8, Canada
| | - Anita K Nivedha
- Department of Chemistry, McGill University, Montréal, Québec H3A 0B8, Canada.,Molecular Forecaster, 7171 rue Frederick Banting, Saint Laurent, Quebec H4S 1Z9, Canada
| | - Jie Su
- Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Departments of Medicine and Oncology, McGill University, Montreal, Quebec H3A 0B8, Canada
| | | | - Caitlin E Miron
- Department of Chemistry, McGill University, Montréal, Québec H3A 0B8, Canada
| | - Hind Amzil
- Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Departments of Medicine and Oncology, McGill University, Montreal, Quebec H3A 0B8, Canada
| | - Nicolas Moitessier
- Department of Chemistry, McGill University, Montréal, Québec H3A 0B8, Canada
| | - Moulay A Alaoui-Jamali
- Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Departments of Medicine and Oncology, McGill University, Montreal, Quebec H3A 0B8, Canada
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4
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Genome mining reveals the genes of carboxypeptidase for OTA-detoxification in Bacillus subtilis CW14. Int J Biol Macromol 2021; 186:800-810. [PMID: 34284053 DOI: 10.1016/j.ijbiomac.2021.07.085] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 07/13/2021] [Accepted: 07/13/2021] [Indexed: 01/07/2023]
Abstract
Bacillus subtilis CW14, isolated from fresh elk droppings in Beijing Zoo, is a Gram-positive, conferred Generally Recognized as Safe (GRAS) bacterium with the capacity of ochratoxin A (OTA) detoxification. The genome sequence of the CW14 strain showed a size of 4,287,522 bp with 44.06% GC content. It was predicted many putative enzymes involved in degrading mycotoxin by analyzing the signal peptides and the transmembrane regions. Nine extracellular enzymes were predicted relating to OTA detoxification, including four D-Ala-D-Ala carboxypeptidases, two hydrolases, two amidases, and one lactamase. Indeed, two of the carboxypeptidase genes dacA and dacB, expressed in Escherichia coli, were verified contributing to OTA detoxification. DacA and OTA were mixed incubated for 24 h, and the degradation rate reached 71.3%. After purification, the concentration of recombinant DacA protein was 0.5 mg/mL. Bacillus subtilis CW14 and its carboxypeptidases may be used as OTA detoxification agents in food and feed industry production.
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5
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Qian Y, Zhang X, Fei Q, Zhou Y. Comments on the ochratoxin A degradation mechanism by Lysobacter sp. CW239 - Wei Wei et al. (2020). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 281:117063. [PMID: 33857714 DOI: 10.1016/j.envpol.2021.117063] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/23/2021] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
This is a research comment on the ochratoxin A (OTA) degradation mechanism by Lysobacter sp. CW239 regarding the previous publication in Environmental Pollution (Wei et al., 2020). Three possible degradation mechanisms were discussed in the referred publication, but without definite evidences, it was not clear which one worked actually. Here, the gene cp4 deficient mutant CW239Δcp4 was successfully constructed, and the carboxypeptidase CP4 role on OTA degradation in strain CW239 was validated in vivo. As a result, the mutant CW239Δcp4 without gene cp4 showed less than 10% reduction of 24 hrs degradation ratio compared to wide-type strain CW239. After the gene cp4 complemented to CW239Δcp4, the complementary strain (+)cp4 recovered the degradation ability to wide-type. The validation result indicated that the third degradation mechanism (i.e., OTA is degraded by joint action of multiple enzymes in CW239) proposed previous (Wei et al., 2020) was correct route for the degradation strain. This commentary was significant to the following studies on the pollutant detoxify strains with similar degradation characters between identified enzyme and the host strain.
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Affiliation(s)
- Yingying Qian
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science Technology, Anhui Agricultural University, Heifei, 230036, China
| | - Xuanjun Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science Technology, Anhui Agricultural University, Heifei, 230036, China
| | - Qingru Fei
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science Technology, Anhui Agricultural University, Heifei, 230036, China
| | - Yu Zhou
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science Technology, Anhui Agricultural University, Heifei, 230036, China.
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6
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Weng Z, Jin J, Shao C, Li H. Reduction of charge variants by CHO cell culture process optimization. Cytotechnology 2020; 72:259-269. [PMID: 32236800 DOI: 10.1007/s10616-020-00375-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 01/22/2020] [Accepted: 01/23/2020] [Indexed: 11/29/2022] Open
Abstract
Over the past decade, global interest in the development of therapeutic monoclonal antibodies (mAbs) has risen rapidly. As therapeutic agents, antibodies have shown marked efficacy in combatting a range of cancers and immune diseases with high target specificity and low toxicity (Carla Lucia et al. in PLoS ONE 6:e24071, 2011; Donaghy in MAbs 8:659-671, 2016; Nasiri et al. in J Cell Physiol 9:6441-6457, 2018; Teo et al. in Cancer Immunol Immunother 61:2295-2309, 2012). Recent advances in cell culture technology, such as high-throughput clone screening, have facilitated antibody production at concentrations exceeding 10 g/L (Chen et al. in BMC Immunol 19:35, 2018; Huang et al. in Biotechnol Prog 26:1400-1410, 2010; Lu et al. in Biotechnol Bioeng 110:191-205, 2013; Singh et al. in Biotechnol Bioeng 113:698-716, 2016). As titers have improved, the industry has begun to focus on the adjustment of target antibody quality profiles to improve efficacy. Cell lines, culture media, and culture conditions impact protein quality (Van Beers and Bardor in Biotechnol J 7:1473-1484, 2012). Optimization of critical quality attributes (CQAs), such as charge variants, can be achieved through bioprocess development and is the preferred approach as changes to the cell line or growth media used is considered unfavorable by regulatory bodies (Gawlitzek et al. in Biotechnol Bioeng 103:1164-1175, 2009; Jordan et al. in Cytotechnology 65:31-40, 2013; Pan et al. in Cytotechnology 69:39-56, 2016). In this study, the effect of process control and ion supplementation on charge variants of mAbs produced by Chinese hamster ovary (CHO) cells was investigated. Results of this study demonstrated that the concentration of Zn2+, duration of culturing, and temperature affect charge variants of a given mAb. Under the optimum conditions of 3L bioreactors, the most significant was that Zn2 + and temperature shift could further improve the quality of antibody. The main peak increased by 12%, and the acid peak decreased by 16%. At the same time, there was no significant loss of titer. This study provided supporting evidence for methods to improve charge variants arising during mAb production.
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Affiliation(s)
- Zhibing Weng
- School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China.,Process Science and Production Department, Sunshine GuoJian Pharmaceutical (Shanghai), Shanghai, China
| | - Jian Jin
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi, Jiangsu, China
| | - ChunHua Shao
- Process Science and Production Department, Sunshine GuoJian Pharmaceutical (Shanghai), Shanghai, China
| | - Huazhong Li
- School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China.
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7
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Wei W, Qian Y, Wu Y, Chen Y, Peng C, Luo M, Xu J, Zhou Y. Detoxification of ochratoxin A by Lysobacter sp. CW239 and characteristics of a novel degrading gene carboxypeptidase cp4. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 258:113677. [PMID: 31843237 DOI: 10.1016/j.envpol.2019.113677] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 11/20/2019] [Accepted: 11/24/2019] [Indexed: 06/10/2023]
Abstract
Ochratoxin A (OTA) is a potent mycotoxin that frequently contaminates agro-products and threatens food safety. A highly efficient OTA degrading strain Lysobacter sp. CW239 was isolated, and the OTA degradation characteristics were investigated. A novel OTA degrading gene carboxypeptidase cp4 was successfully cloned and characterized from CW239. The heterologous recombinant was constructed by gene cp4 and expression vector pET-32a(+) and overexpressed by E. coli BL21 CodonPlus™ (DE3). The recombinant protein rCP4 was purified, and the OTA-degrading activity was evaluated. Although OTA was efficiently degraded by CW239 (24-h degradation ratio of 86.2%), the 24-h OTA degradation ratio for rCP4 was only 36.8% at fairly high concentration (0.25 mg/mL) protein. The degraded product was obtained by immune affinity column (IAC) and determined by mass spectrometry (MS), and the degraded product was the less toxic ochratoxin α (OTα). Based on the serial investigations of this study, OTA might be simultaneously co-degraded by CP4 and another unknown degrading agent in that degrading strain.
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Affiliation(s)
- Wei Wei
- State Key Laboratory for Quality and Safety of Agro-products (in prepared), Institute of Quality and Standard for Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Yingying Qian
- State Key Laboratory of Tea Biology and Utilization, School of Tea and Food Science Technology, Anhui Agricultural University, Heifei 230036, China
| | - Yanbo Wu
- State Key Laboratory of Tea Biology and Utilization, School of Tea and Food Science Technology, Anhui Agricultural University, Heifei 230036, China
| | - Ying Chen
- State Key Laboratory of Tea Biology and Utilization, School of Tea and Food Science Technology, Anhui Agricultural University, Heifei 230036, China
| | - Cheng Peng
- State Key Laboratory for Quality and Safety of Agro-products (in prepared), Institute of Quality and Standard for Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Mingzhong Luo
- College of Animal Science, Yangtze University, Jingzhou 434025, China
| | - Junfeng Xu
- State Key Laboratory for Quality and Safety of Agro-products (in prepared), Institute of Quality and Standard for Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Yu Zhou
- State Key Laboratory of Tea Biology and Utilization, School of Tea and Food Science Technology, Anhui Agricultural University, Heifei 230036, China.
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8
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Berta D, Buigues PJ, Badaoui M, Rosta E. Cations in motion: QM/MM studies of the dynamic and electrostatic roles of H + and Mg 2+ ions in enzyme reactions. Curr Opin Struct Biol 2020; 61:198-206. [PMID: 32065923 DOI: 10.1016/j.sbi.2020.01.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/04/2020] [Accepted: 01/06/2020] [Indexed: 12/17/2022]
Abstract
Here we discuss current trends in the simulations of enzymatic reactions focusing on phosphate catalysis. The mechanistic details of the proton transfers coupled to the phosphate cleavage is one of the key challenges in QM/MM calculations of these and other enzyme catalyzed reactions. The lack of experimental information offers both an opportunity for computations as well as often unresolved controversies. We discuss the example of small GTPases including the important human Ras protein. The high dimensionality and chemical complexity of these reactions demand carefully chosen computational techniques both in terms of the underlying quantum chemical theory and the sampling of the conformational ensemble. We also point out the important role of Mg2+ ions, and recent advances in their transient involvement in the catalytic mechanisms.
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Affiliation(s)
- Dénes Berta
- Department of Chemistry, King's College London, London, SE1 1DB, United Kingdom
| | - Pedro J Buigues
- Department of Chemistry, King's College London, London, SE1 1DB, United Kingdom
| | - Magd Badaoui
- Department of Chemistry, King's College London, London, SE1 1DB, United Kingdom
| | - Edina Rosta
- Department of Chemistry, King's College London, London, SE1 1DB, United Kingdom.
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9
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Angeli A, Tanini D, Nocentini A, Capperucci A, Ferraroni M, Gratteri P, Supuran CT. Selenols: a new class of carbonic anhydrase inhibitors. Chem Commun (Camb) 2019; 55:648-651. [PMID: 30560259 DOI: 10.1039/c8cc08562e] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Stable aryl selenols were obtained through a convenient procedure. Selenols represent a new chemotype acting as carbonic anhydrase inhibitors (CAIs), inhibiting four human isoforms, CAs I, II, VII and the tumor-associated CA IX. X-ray crystallographic, physical and computational studies provided insights into the binding mode of this conceptually new class of CAIs.
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Affiliation(s)
- Andrea Angeli
- University of Florence, NEUROFARBA Department, Sezione di Scienze Farmaceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy.
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10
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Itoh T, Yoshimoto N, Hirano Y, Yamamoto K. Structural basis for the selective inhibition of activated thrombin-activatable fibrinolysis inhibitor (TAFIa) by a selenium-containing inhibitor with chloro-aminopyridine as a basic group. Bioorg Med Chem Lett 2018; 28:2256-2260. [DOI: 10.1016/j.bmcl.2018.05.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/21/2018] [Accepted: 05/22/2018] [Indexed: 11/15/2022]
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11
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Cui FH, Chen J, Mo ZY, Su SX, Chen YY, Ma XL, Tang HT, Wang HS, Pan YM, Xu YL. Copper-Catalyzed Decarboxylative/Click Cascade Reaction: Regioselective Assembly of 5-Selenotriazole Anticancer Agents. Org Lett 2018; 20:925-929. [PMID: 29388780 DOI: 10.1021/acs.orglett.7b03734] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A simple and efficient Cu-catalyzed decarboxylative/click reaction for the preparation of 1,4-disubstituted 5-arylselanyl-1,2,3-triazoles from propiolic acids, diselenides, and azides has been developed. The mechanistic study revealed that the intermolecular AAC reaction of an alkynyl selenium intermediate occurred. The resulting multisubstituted 5-seleno-1,2,3-triazoles were tested for in vitro anticancer activity by MTT assay, and compounds 4f, 4h, and 4p showed potent cancer cell-growth inhibition activities.
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Affiliation(s)
- Fei-Hu Cui
- College of Pharmacy, Guilin Medical University , Guilin 541004 People's Republic of China.,State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004, People's Republic of China
| | - Jing Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004, People's Republic of China
| | - Zu-Yu Mo
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004, People's Republic of China
| | - Shi-Xia Su
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004, People's Republic of China
| | - Yan-Yan Chen
- College of Pharmacy, Guilin Medical University , Guilin 541004 People's Republic of China
| | - Xian-Li Ma
- College of Pharmacy, Guilin Medical University , Guilin 541004 People's Republic of China
| | - Hai-Tao Tang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004, People's Republic of China
| | - Heng-Shan Wang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004, People's Republic of China
| | - Ying-Ming Pan
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004, People's Republic of China
| | - Yan-Li Xu
- College of Pharmacy, Guilin Medical University , Guilin 541004 People's Republic of China.,State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004, People's Republic of China
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12
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Sharma N, Kumar S, Kumar S, Mehta SK, Bhasin KK. Synthesis and characterization of fused imidazole heterocyclic selenoesters and their application for chemical detoxification of HgCl2. NEW J CHEM 2018. [DOI: 10.1039/c7nj03908e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selenoester derivatives of imidazo[1,2-a]pyridine/imidazo[1,2-a]pyrimidine has been synthesized by the reaction of sodium selenocarboxylates with 2-(chloromethyl)imidazo[1,2-a]pyridine/pyrimidine.
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Affiliation(s)
- Nidhi Sharma
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Sanjeev Kumar
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Sangit Kumar
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India
| | - S. K. Mehta
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - K. K. Bhasin
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
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13
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Akparov V, Timofeev V, Khaliullin I, Švedas V, Kuranova I. Structure of the carboxypeptidase B complex with N-sulfamoyl-L-phenylalanine – a transition state analog of non-specific substrate. J Biomol Struct Dyn 2017; 36:956-965. [DOI: 10.1080/07391102.2017.1304242] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Valery Akparov
- Protein Chemistry Department, State Research Institute for Genetics and Selection of Industrial Microorganisms, 1-yi DorozhnyiProezd 1, Moscow, 117545, Russia
| | - Vladimir Timofeev
- X-ray Analysis Methods and Synchrotron Radiation Laboratory, Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences, Leninskii Prospect 59, Moscow, 119333, Russia
- NBICS Center, National Research Centre ‘Kurchatov Institute’, Akad. Kurchatov Sq. 1, Moscow, 123182, Russia
| | - Ilyas Khaliullin
- Laboratory of Molecular Genetics, Moscow Institute of Physics and Technology (State University), 9 Institutsky per. Dolgoprudny, Moscow, 141700, Russia
| | - Vytas Švedas
- Belozersky Institute of Physicochemical Biology, Lomonosov Moscow State University, 1/40Leninskie Gory, Moscow, 119991, Russia
| | - Inna Kuranova
- X-ray Analysis Methods and Synchrotron Radiation Laboratory, Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences, Leninskii Prospect 59, Moscow, 119333, Russia
- NBICS Center, National Research Centre ‘Kurchatov Institute’, Akad. Kurchatov Sq. 1, Moscow, 123182, Russia
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14
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Akparov VK, Timofeev VI, Maghsoudi NN, Kuranova IP. Three-dimensional structure of porcine pancreatic carboxypeptidase B with an acetate ion and two zinc atoms in the active site. CRYSTALLOGR REP+ 2017. [DOI: 10.1134/s106377451702002x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Sharma N, Kumar S, Maurya IK, Bhasin KK, Verma A, Wangoo N, Bhasin AKK, Mehta SK, Kumar S, Sharma RK. Synthesis, structural analysis, antimicrobial evaluation and synergistic studies of imidazo[1,2-a]pyrimidine chalcogenides. RSC Adv 2016. [DOI: 10.1039/c6ra24020h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis and structural analysis of novel imidazo[1,2-a]pyrimidine chalcogenides exhibiting effective antimicrobial activity and synergistic effects with known antibiotics have been reported.
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Affiliation(s)
- Nidhi Sharma
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Sanjeev Kumar
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Indresh K. Maurya
- Department of Microbial Biotechnology
- Panjab University
- Chandigarh
- India
| | - K. K. Bhasin
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Ajay Verma
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India
| | - Nishima Wangoo
- Department of Applied Sciences
- University Institute of Engineering and Technology (UIET)
- Panjab University
- Chandigarh
- India
| | - Aman K. K. Bhasin
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - S. K. Mehta
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Sangit Kumar
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India
| | - Rohit K. Sharma
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
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Akparov V, Sokolenko N, Timofeev V, Kuranova I. Structure of the complex of carboxypeptidase B and N-sulfamoyl-L-arginine. ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS 2015; 71:1335-40. [PMID: 26457527 DOI: 10.1107/s2053230x15016799] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 09/08/2015] [Indexed: 11/11/2022]
Abstract
Porcine pancreatic carboxypeptidase B (EC 3.4.23.6) was complexed with a stable transition-state analogue, N-sulfamoyl-L-arginine, in which an S atom imitates the sp(3)-hybridized carbon in the scissile-bond surrogate. Crystals were grown in a form belonging to the same space group, P41212, as the uncomplexed enzyme. X-ray data were collected to a resolution of 1.25 Å. The molecule was refined and the positions of non-H atoms of the inhibitor and water molecules were defined using difference Fourier maps. The enzyme-inhibitor complex and 329 water molecules were further refined to a crystallographic R factor of 0.159. The differences in conformation between the complexed and uncomplexed forms of carboxypeptidase B are shown. The inhibitor is bound in a curved conformation in the active-site cleft, and the sulfamide group is bound to the Zn ion in an asymmetric bidentate fashion. The complex is stabilized by hydrogen bonds between the N1/N2 guanidine group of the inhibitor and the Asp255 carboxyl of the enzyme. The side-chain CH2 groups of the inhibitor are in van der Waals contact with Leu203 and Ile247 in the enzyme. This study provides useful clues concerning how the transition state of arginine may bind to carboxypeptidase B and therefore provides an insight into the structural basis of carboxypeptidase B selectivity, which is useful for the rational design of a carboxypeptidase with improved selectivity for industrial recombinant pro-insulin processing.
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Affiliation(s)
- Valery Akparov
- Protein Chemistry Department, State Research Institute for Genetics and Selection of Industrial Microorganisms, 1yi Dorozhnyi Proezd 1, 117545 Moscow, Russian Federation
| | - Nikolay Sokolenko
- Chemical Synthesis Department, Innovation Research Centre `Solaris', Tallinskaya str. 32-2-44, 123458 Moscow, Russian Federation
| | - Vladimir Timofeev
- X-ray Analysis Methods and Synchrotron Radiation Laboratory, Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninsky Prospect 59, 119333 Moscow, Russian Federation
| | - Inna Kuranova
- X-ray Analysis Methods and Synchrotron Radiation Laboratory, Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninsky Prospect 59, 119333 Moscow, Russian Federation
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Chang WJ, Kulkarni MV, Sun CM. Regioselective one-pot three component synthesis of chiral 2-iminoselenazolines under sonication. RSC Adv 2015. [DOI: 10.1039/c5ra18763j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
A one-pot multi component reaction of selenoureas, which are in situ generated from l-amino esters and isoselenocyanates, with α-bromoketone under ultrasonication.
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Affiliation(s)
- Wong-Jin Chang
- Department of Applied Chemistry
- National Chiao-Tung University
- Hsinchu 300-10
- Taiwan
| | - Manohar V. Kulkarni
- Department of Applied Chemistry
- National Chiao-Tung University
- Hsinchu 300-10
- Taiwan
| | - Chung-Ming Sun
- Department of Applied Chemistry
- National Chiao-Tung University
- Hsinchu 300-10
- Taiwan
- Department of Medicinal and Applied Chemistry
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