1
|
Zhu R, Jiang G, Tang W, Zhao X, Chen F, Zhang X, Ye N. Aporphines: A privileged scaffold in CNS drug discovery. Eur J Med Chem 2023; 256:115414. [PMID: 37172474 DOI: 10.1016/j.ejmech.2023.115414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/21/2023] [Accepted: 04/22/2023] [Indexed: 05/15/2023]
Abstract
Aporphine alkaloids embedded in 4H-dibenzo[de,g]quinoline four-ring structures belong to one of the largest subclasses of isoquinoline alkaloids. Aporphine is a privileged scaffold in the field of organic synthesis and medicinal chemistry for the discovery of new therapeutic agents for central nervous system (CNS) diseases, cancer, metabolic syndrome, and other diseases. In the past few decades, aporphine has attracted continuing interest to be widely used to develop selective or multitarget directed ligands (MTDLs) targeting the CNS (e.g., dopamine D1/2/5, serotonin 5-HT1A/2A/2C and 5-HT7, adrenergic α/β receptors, and cholinesterase enzymes), thereby serving as valuable pharmacological probes for mechanism studies or as potential leads for CNS drug discovery. The aims of the present review are to highlight the diverse CNS activities of aporphines, discuss their SAR, and briefly summarize general synthetic routes, which will pave the way for the design and development of new aporphine derivatives as promising CNS active drugs in the future.
Collapse
Affiliation(s)
- Rongfeng Zhu
- Department of Medicinal Chemistry, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Guangqian Jiang
- Department of Medicinal Chemistry, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Wanyu Tang
- Department of Medicinal Chemistry, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Xiaobao Zhao
- Department of Medicinal Chemistry, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Fan Chen
- Department of Medicinal Chemistry, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Xiaoya Zhang
- Department of Medicinal Chemistry, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Na Ye
- Department of Medicinal Chemistry, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, 215123, China.
| |
Collapse
|
2
|
Vinusri S, Gnanam R, Caroline R, Santhanakrishnan VP, Kandavelmani A. Anticancer Potential of Hydroxychavicol Derived from Piper betle L: An in Silico and Cytotoxicity Study. Nutr Cancer 2022; 74:3701-3713. [PMID: 35703834 DOI: 10.1080/01635581.2022.2085310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Piper betle L. is a popular medicinal plant in Asia, and extracts of the plant leaf are used for several therapeutics. It is known for its rich source of phenolic compounds, including hydroxychavicol. Hydroxychavicol is an allylbenzene that has gained much attention due to its anticancer properties. The current study quantified and purified hydroxychavicol from P. betle L. and predicted its anticancer competence through in silico and cytotoxicity studies. Leaf samples of 22 P. betle L. accessions from different locations of Tamil Nadu, India, were analyzed using reverse phase-high performance liquid chromatography for quantification of hydroxychavicol. The highest quantity of hydroxychavicol was obtained from the accession BV22 (89.2%). Chemical absorption, distribution, metabolism, excretion, and toxicity (ADMET) analysis of hydroxychavicol using SwissADME satisfied the physicochemical property guidelines of Lipinski's Rule of Five, ensuring its drug-likeness behavior. Molecular docking studies confirmed the interaction of hydroxychavicol with all 16 tested cancer targets. In Vitro MTT assay of hydroxychavicol in bone cancer cell lines (MG63) also demonstrated the anticancer competency, indicating the requirement to formulate the molecule as a drug in treating various types of cancers.
Collapse
Affiliation(s)
- S Vinusri
- Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, India
| | - R Gnanam
- Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, India
| | - R Caroline
- Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, India
| | - V P Santhanakrishnan
- Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, India
| | - A Kandavelmani
- Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, India
| |
Collapse
|
3
|
Tosso RD, Zarycz MNC, Schiel A, Goicoechea Moro L, Baldoni HA, Angelina E, Enriz RD. Evaluating the conformational space of the active site of D 2 dopamine receptor. Scope and limitations of the standard docking methods. J Comput Chem 2022; 43:1298-1312. [PMID: 35638694 DOI: 10.1002/jcc.26938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 04/11/2022] [Accepted: 05/08/2022] [Indexed: 11/05/2022]
Abstract
We report here for the first time the potential energy surfaces (PES) of phenyletilamine (PEA) and meta-tyramine (m-OH-PEA) at the D2 dopamine receptor (D2DR) binding site. PESs not only allow us to observe all the critical points of the surface (minimums, maximums, and transition states), but also to note the ease or difficulty that each local minima have for their conformational inter-conversions and therefore know the conformational flexibility that these ligands have in their active sites. Taking advantage of possessing this valuable information, we analyze how accurate a standard docking study is in these cases. Our results indicate that although we have to be careful in how to carry out this type of study and to consider performing some extra-simulations, docking calculations can be satisfactory. In order to analyze in detail the different molecular interactions that are stabilizing the different ligand-receptor (L-R) complexes, we carried out quantum theory of atoms in molecules (QTAIM) computations and NMR shielding calculations. Although some of these techniques are a bit tedious and require more computational time, our results demonstrate the importance of performing computational simulations using different types of combined techniques (docking/MD/hybrid QM-MM/QTAIM and NMR shielding calculations) in order to obtain more accurate results. Our results allow us to understand in details the molecular interactions stabilizing and destabilizing the different L-R complexes reported here. Thus, the different activities observed for dopamine (DA), m-OH-PEA, and PEA can be clearly explained at molecular level.
Collapse
Affiliation(s)
- Rodrigo D Tosso
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas, San Luis, Argentina
| | - M Natalia C Zarycz
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas, San Luis, Argentina
| | - Ayelén Schiel
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas, San Luis, Argentina
| | - Luisa Goicoechea Moro
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas, San Luis, Argentina
| | - Héctor A Baldoni
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis; Instituto de Matemáticas, San Luis, Argentina
| | - Emilio Angelina
- Laboratorio de Estructura Molecular y Propiedades, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Instituto de Química Básica y Aplicada, Corrientes, Argentina
| | - Ricardo D Enriz
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas, San Luis, Argentina
| |
Collapse
|
4
|
Chen Y, Li X, Zhan C, Lao Z, Li F, Dong X, Wei G. A Comprehensive Insight into the Mechanisms of Dopamine in Disrupting Aβ Protofibrils and Inhibiting Aβ Aggregation. ACS Chem Neurosci 2021; 12:4007-4019. [PMID: 34472835 DOI: 10.1021/acschemneuro.1c00306] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Fibrillary aggregates of amyloid-β (Aβ) are the pathological hallmark of Alzheimer's disease (AD). Clearing Aβ deposition or inhibiting Aβ aggregation is a promising approach to treat AD. Experimental studies reported that dopamine (DA), an important neurotransmitter, can inhibit Aβ aggregation and disrupt Aβ fibrils in a dose-dependent manner. However, the underlying molecular mechanisms still remain mostly elusive. Herein, we investigated the effect of DA on Aβ42 protofibrils at three different DA-to-Aβ molar ratios (1:1, 2:1, and 10:1) using all-atom molecular dynamics simulations. Our simulations demonstrate that protonated DA at a DA-to-Aβ ratio of 2:1 exhibits stronger Aβ protofibril disruptive capacity than that at a molar-ratio of 1:1 by mostly disrupting the F4-L34-V36 hydrophobic core. When the ratio of DA-to-Aβ increases to 10:1, DA has a high probability to bind to the outer surface of protofibril and has negligible effect on the protofibril structure. Interestingly, at the same DA-to-Aβ ratio (10:1), a mixture of protonated (DA+) and deprotonated (DA0) DA molecules significantly disrupts Aβ protofibrils by the binding of DA0 to the F4-L34-V36 hydrophobic core. Replica-exchange molecular dynamics simulations of Aβ42 dimer show that DA+ inhibits the formation of β-sheets, K28-A42/K28-D23 salt-bridges, and interpeptide hydrophobic interactions and results in disordered coil-rich Aβ dimers, which would inhibit the subsequent fibrillization of Aβ. Further analyses reveal that DA disrupts Aβ protofibril and prevents Aβ dimerization mostly through π-π stacking interactions with residues F4, H6, and H13, hydrogen bonding interactions with negatively charged residues D7, E11, E22 and D23, and cation-π interactions with residues R5. This study provides a complete picture of the molecular mechanisms of DA in disrupting Aβ protofibril and inhibiting Aβ aggregation, which could be helpful for the design of potent drug candidates for the treatment/intervention of AD.
Collapse
Affiliation(s)
- Yujie Chen
- Department of Physics, State Key Laboratory of Surface Physics, and Key Laboratory for Computational Physical Sciences (Ministry of Education), Fudan University, Shanghai 200438, People’s Republic of China
| | - Xuhua Li
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
| | - Chendi Zhan
- Department of Physics, State Key Laboratory of Surface Physics, and Key Laboratory for Computational Physical Sciences (Ministry of Education), Fudan University, Shanghai 200438, People’s Republic of China
| | - Zenghui Lao
- Department of Physics, State Key Laboratory of Surface Physics, and Key Laboratory for Computational Physical Sciences (Ministry of Education), Fudan University, Shanghai 200438, People’s Republic of China
| | - Fangying Li
- Department of Physics, State Key Laboratory of Surface Physics, and Key Laboratory for Computational Physical Sciences (Ministry of Education), Fudan University, Shanghai 200438, People’s Republic of China
| | - Xuewei Dong
- Department of Physics, State Key Laboratory of Surface Physics, and Key Laboratory for Computational Physical Sciences (Ministry of Education), Fudan University, Shanghai 200438, People’s Republic of China
| | - Guanghong Wei
- Department of Physics, State Key Laboratory of Surface Physics, and Key Laboratory for Computational Physical Sciences (Ministry of Education), Fudan University, Shanghai 200438, People’s Republic of China
| |
Collapse
|
5
|
Structure activity relationships and the binding mode of quinolinone-pyrimidine hybrids as reversal agents of multidrug resistance mediated by P-gp. Sci Rep 2021; 11:16856. [PMID: 34413359 PMCID: PMC8376931 DOI: 10.1038/s41598-021-96226-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 08/06/2021] [Indexed: 02/07/2023] Open
Abstract
P-gp-associated multidrug resistance is a major impediment to the success of chemotherapy. With the aim of finding non-toxic and effective P-gp inhibitors, we investigated a panel of quinolin-2-one-pyrimidine hybrids. Among the active compounds, two of them significantly increased intracellular doxorubicin and rhodamine 123 accumulation by inhibiting the efflux mediated by P-gp and restored doxorubicin toxicity at nanomolar range. Structure-activity relationships showed that the number of methoxy groups, an optimal length of the molecule in its extended conformation, and at least one flexible methylene group bridging the quinolinone to the moiety bearing the pyrimidine favored the inhibitory potency of P-gp. The best compounds showed a similar binding pattern and interactions to those of doxorubicin and tariquidar, as revealed by MD and hybrid QM/MM simulations performed with the recent experimental structure of P-gp co-crystallized with paclitaxel. Analysis of the molecular interactions stabilizing the different molecular complexes determined by MD and QTAIM showed that binding to key residues from TMH 4-7 and 12 is required for inhibition.
Collapse
|
6
|
Petelski AN, Pamies SC, Sosa GL. How procyanidin C1 sticks to collagen: The role of proline rings. Biophys Chem 2021; 276:106627. [PMID: 34089979 DOI: 10.1016/j.bpc.2021.106627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/07/2021] [Accepted: 05/25/2021] [Indexed: 11/15/2022]
Abstract
Molecular interactions between proteins and polyphenols are responsible for many natural phenomena like colloidal turbidity, astringency, denaturation of enzymes and leather tanning. Although these phenomena are well known, there are open questions about the specific interactions involved in the complexation process. In this work, Molecular Dynamic (MD) simulations and the topology of the electron density analysis were used to study the interactions between the flavonoid procyanidin C1 and a collagen fragment solvated in water. Root mean square deviation; root mean square fluctuation and hydrogen bonds occupancy were examined after 50 ns. The interactions were also analyzed by means of the quantum theory of atoms in molecules. Our results show that the main interactions are hydrogen bonds between -OH groups of the polyphenol and CO groups of the peptide bond. Stacking interactions between proline rings and phenol rings, that is CH⋯π hydrogen bonds, also stabilize the dynamic structure of the complex.
Collapse
Affiliation(s)
- André Nicolai Petelski
- Grupo de Investigación en Química Teórica y Experimental (QUITEX), Departamento de Ingeniería Química, Universidad Tecnológica Nacional, Facultad Regional Resistencia, French 414 (H3500CHJ), Resistencia, Chaco, Argentina; Instituto de Química Básica y Aplicada del Nordeste Argentino, IQUIBA-NEA, UNNE-CONICET, Avenida Libertad 5460, 3400 Corrientes, Argentina.
| | - Silvana Carina Pamies
- Grupo de Investigación en Química Teórica y Experimental (QUITEX), Departamento de Ingeniería Química, Universidad Tecnológica Nacional, Facultad Regional Resistencia, French 414 (H3500CHJ), Resistencia, Chaco, Argentina.
| | - Gladis Laura Sosa
- Grupo de Investigación en Química Teórica y Experimental (QUITEX), Departamento de Ingeniería Química, Universidad Tecnológica Nacional, Facultad Regional Resistencia, French 414 (H3500CHJ), Resistencia, Chaco, Argentina; Instituto de Química Básica y Aplicada del Nordeste Argentino, IQUIBA-NEA, UNNE-CONICET, Avenida Libertad 5460, 3400 Corrientes, Argentina.
| |
Collapse
|
7
|
Ocean Acidification Amplifies the Olfactory Response to 2-Phenylethylamine: Altered Cue Reception as a Mechanistic Pathway? J Chem Ecol 2021; 47:859-876. [PMID: 34014453 PMCID: PMC8613125 DOI: 10.1007/s10886-021-01276-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 03/25/2021] [Accepted: 04/13/2021] [Indexed: 12/19/2022]
Abstract
With carbon dioxide (CO2) levels rising dramatically, climate change threatens marine environments. Due to increasing CO2 concentrations in the ocean, pH levels are expected to drop by 0.4 units by the end of the century. There is an urgent need to understand the impact of ocean acidification on chemical-ecological processes. To date, the extent and mechanisms by which the decreasing ocean pH influences chemical communication are unclear. Combining behaviour assays with computational chemistry, we explore the function of the predator related cue 2-phenylethylamine (PEA) for hermit crabs (Pagurus bernhardus) in current and end-of-the-century oceanic pH. Living in intertidal environments, hermit crabs face large pH fluctuations in their current habitat in addition to climate-change related ocean acidification. We demonstrate that the dietary predator cue PEA for mammals and sea lampreys is an attractant for hermit crabs, with the potency of the cue increasing with decreasing pH levels. In order to explain this increased potency, we assess changes to PEA’s conformational and charge-related properties as one potential mechanistic pathway. Using quantum chemical calculations validated by NMR spectroscopy, we characterise the different protonation states of PEA in water. We show how protonation of PEA could affect receptor-ligand binding, using a possible model receptor for PEA (human TAAR1). Investigating potential mechanisms of pH-dependent effects on olfactory perception of PEA and the respective behavioural response, our study advances the understanding of how ocean acidification interferes with the sense of smell and thereby might impact essential ecological interactions in marine ecosystems.
Collapse
|
8
|
Singh A, Bali A, Kumari P. One Pot Synthesis and Pharmacological Evaluation of Aryl Substituted Imidazoles as Potential Atypical Antipsychotics. LETT DRUG DES DISCOV 2021. [DOI: 10.2174/1570180817999200925164707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Second generation or “atypical” antipsychotics demonstrate an improved
therapeutic profile over conventional neuroleptics. These are effective in both positive and negative
symptoms of the disease and have a lower propensity to induce adverse symptoms.
Objective:
The main objective of the research was in silico design and synthesis of potential atypical
antipsychotics with combined antiserotonergic / antidopaminergic effect.
Methods:
A one pot synthesis of aryl substituted imidazole derivatives was carried out in green
solvent PEG-400 and the prepared compounds were evaluated for atypical antipsychotic activity in
animal models for dopaminergic and serotonergic antagonism. The compounds were designed
based on their 3D similarity studies to standard drugs and in silico (docking studies) with respect to
5-HT2A and D2 receptors.
Results:
Results from the docking studies with respect to 5-HT2A and D2 receptors suggested a potential
atypical antipsychotic profile for the test compounds. Theoretical ADME profiling of the
compounds based on selected physicochemical parameters suggested an excellent compliance with
Lipinski’s rules. The potential of these compounds to penetrate the blood brain barrier (log BB) was
computed through an online software program and the values obtained for the compounds suggested
a good potential for brain permeation. Reversal of apomorphine induced mesh climbing behaviour
coupled with inactivity in the stereotypy assay indicates antidopaminergic effect and a potential
atypical profile for the test compounds 1-5. Further, the activity of compounds in DOI assay
indicated a 5-HT2 antagonistic profile (5-HT2 antagonism).
Conclusion:
Compound 5 emerged as important lead compound showing combined antidopaminergic
and antiserotonergic (5-HT2A) activity with a potential atypical antipsychotic profile.
Collapse
Affiliation(s)
- Arshjyoti Singh
- University Institute of Pharmaceutical Sciences, UGC Cenrer of Advanced Study, Panjab University, Chandigarh 160014,India
| | - Alka Bali
- University Institute of Pharmaceutical Sciences, UGC Cenrer of Advanced Study, Panjab University, Chandigarh 160014,India
| | - Pooja Kumari
- University Institute of Pharmaceutical Sciences, UGC Cenrer of Advanced Study, Panjab University, Chandigarh 160014,India
| |
Collapse
|
9
|
Parravicini O, Angelina E, Spinelli R, Garibotto F, Siano ÁS, Vila L, Cabedo N, Cortes D, Enriz RD. Design, synthesis, biological evaluation and molecular modelling of substituted pyrrolo[2,1- a]isoquinolinone derivatives: discovery of potent inhibitors of AChE and BChE. NEW J CHEM 2021. [DOI: 10.1039/d1nj00345c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Study of the molecular interactions in L–R complexes of acetyl- and butyryl-cholinesterase using MD/QTAIM calculations for designing new potent cholinesterase inhibitors.
Collapse
Affiliation(s)
- Oscar Parravicini
- Facultad de Química
- Bioquímica y Farmacia
- Universidad Nacional de San Luis
- Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL)
- 5700 San Luis
| | - Emilio Angelina
- Laboratorio de Estructura Molecular y Propiedades
- IQUIBA-NEA
- Universidad Nacional del Nordeste
- CONICET
- FaCENA
| | - Roque Spinelli
- Laboratorio de Péptidos Bioactivos
- Departamento de Química Orgánica
- Facultad de Bioquímica y Ciencias Biológicas
- Universidad Nacional del Litoral
- Santa Fe
| | - Francisco Garibotto
- Facultad de Química
- Bioquímica y Farmacia
- Universidad Nacional de San Luis
- Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL)
- 5700 San Luis
| | - Álvaro S. Siano
- Laboratorio de Péptidos Bioactivos
- Departamento de Química Orgánica
- Facultad de Bioquímica y Ciencias Biológicas
- Universidad Nacional del Litoral
- Santa Fe
| | - Laura Vila
- Instituto de Investigación Sanitaria INCLIVA
- 46010 Valencia
- Spain
| | - Nuria Cabedo
- Instituto de Investigación Sanitaria INCLIVA
- 46010 Valencia
- Spain
- Departamento de Farmacología
- Facultad de Farmacia
| | - Diego Cortes
- Departamento de Farmacología
- Facultad de Farmacia
- Universidad de Valencia
- 46100 Burjassot
- Spain
| | - Ricardo D. Enriz
- Facultad de Química
- Bioquímica y Farmacia
- Universidad Nacional de San Luis
- Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL)
- 5700 San Luis
| |
Collapse
|
10
|
Rojas S, Parravicini O, Vettorazzi M, Tosso R, Garro A, Gutiérrez L, Andújar S, Enriz R. Combined MD/QTAIM techniques to evaluate ligand-receptor interactions. Scope and limitations. Eur J Med Chem 2020; 208:112792. [PMID: 32949964 DOI: 10.1016/j.ejmech.2020.112792] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 08/26/2020] [Accepted: 08/27/2020] [Indexed: 12/29/2022]
Abstract
In medicinal chemistry, it is extremely important to evaluate, as accurately as possible, the molecular interactions involved in the formation of different ligand-receptor (L-R) complexes. Evaluating the different molecular interactions by quantum mechanics calculations is not a simple task, since formation of an L-R complex is a dynamic process. In this case, the use of combined techniques of molecular dynamics (MD) and quantum calculations is one the best possible approaches. In this work we report a comparative study using combined MD and QTAIM (Quantum Theory of Atoms In Molecules) calculations for five biological systems with different levels of structural complexity. We have studied Acetylcholinesterase (AChE), D2 Dopamine Receptor (D2DR), beta Secretase (BACE1), Dihydrofolate Reductase (DHFR) and Sphingosine Kinase 1 (SphK1). In these molecular targets, we have analyzed different ligands with diverse structural characteristics. The inhibitory activities of most of them have been previously measured in our laboratory. Our results indicate that QTAIM calculations can be extremely useful for in silico studies. It is possible to obtain very accurate information about the strength of the molecular interactions that stabilize the formation of the different L-R complexes. Better correlations can be obtained between theoretical and experimental data by using QTAIM calculations, allowing us to discriminate among ligands with similar affinities. QTAIM analysis gives fairly accurate information for weak interactions which are not well described by MD simulations. QTAIM study also allowed us to evaluate and determine which parts of the ligand need to be modified in order to increase its interactions with the molecular target. In this study we have discussed the importance of combined MD/QTAIM calculations for this type of simulations, showing their scopes and limitations.
Collapse
Affiliation(s)
- Sebastián Rojas
- IMIBIO-SL CONICET, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de Los Andes 950, 5700, San Luis, Argentina
| | - Oscar Parravicini
- IMIBIO-SL CONICET, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de Los Andes 950, 5700, San Luis, Argentina
| | - Marcela Vettorazzi
- IMIBIO-SL CONICET, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de Los Andes 950, 5700, San Luis, Argentina
| | - Rodrigo Tosso
- IMIBIO-SL CONICET, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de Los Andes 950, 5700, San Luis, Argentina
| | - Adriana Garro
- IMIBIO-SL CONICET, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de Los Andes 950, 5700, San Luis, Argentina
| | - Lucas Gutiérrez
- IMIBIO-SL CONICET, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de Los Andes 950, 5700, San Luis, Argentina
| | - Sebastián Andújar
- IMIBIO-SL CONICET, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de Los Andes 950, 5700, San Luis, Argentina
| | - Ricardo Enriz
- IMIBIO-SL CONICET, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de Los Andes 950, 5700, San Luis, Argentina.
| |
Collapse
|
11
|
Campos LE, Garibotto F, Angelina E, Kos J, Gonec T, Marvanova P, Vettorazzi M, Oravec M, Jendrzejewska I, Jampilek J, Alvarez SE, Enriz RD. Hydroxynaphthalenecarboxamides and substituted piperazinylpropandiols, two new series of BRAF inhibitors. A theoretical and experimental study. Bioorg Chem 2020; 103:104145. [PMID: 32801082 DOI: 10.1016/j.bioorg.2020.104145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/17/2020] [Accepted: 07/24/2020] [Indexed: 12/19/2022]
Abstract
The oncogenic mutated kinase BRAFV600E is an attractive molecular target because it is expressed in several human cancers, including melanoma. To present, only three BRAF small inhibitors are approved by the FDA for the treatment of patients with metastatic melanoma: Vemurafenib, Dabrafenib and Encorafenib. Although many protocol treatments have been probed in clinical trials, BRAF inhibition has a limited effectiveness because patients invariably develop resistance and secondary toxic effects associated with the therapy. These limitations highlight the importance of designing new and better inhibitors with different structures that could establish different interactions in the active site of the enzyme and therefore decrease resistance progress. Considering the data from our previous report, here we studied two series of derivatives of structural scaffolds as potential BRAF inhibitors: hydroxynaphthalenecarboxamides and substituted piperazinylpropandiols. Our results indicate that structural analogues of substituted piperazinylpropandiols do not show significantly better activities to that previously reported. In contrast, the hydroxynaphthalenecarboxamides derivatives significantly inhibited cell viability and ERK phosphorylation, a measure of BRAF activity, in Lu1205 BRAFV600E melanoma cells. In order to better understand these experimental results, we carried out a molecular modeling study using different combined techniques: docking, MD simulations and quantum theory of atoms in molecules (QTAIM) calculations. Thus, by using this approach we determined that the molecular interactions that stabilize the different molecular complexes are closely related to Vemurafenib, a well-documented BRAF inhibitor. Furthermore, we found that bi-substituted compounds may interact more strongly respect to the mono-substituted analogues, by establishing additional interactions with the DFG-loop at the BRAF-active site. On the bases of these results we synthesized and tested a new series of hydroxynaphthalenecarboxamides bi-substituted. Remarkably, all these compounds displayed significant inhibitory effects on the bioassays performed. Thus, the structural information reported here is important for the design of new BRAFV600E inhibitors possessing this type of structural scaffold.
Collapse
Affiliation(s)
- Ludmila E Campos
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Ejército de los Andes 950, 5700 San Luis, Argentina
| | - Francisco Garibotto
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Ejército de los Andes 950, 5700 San Luis, Argentina
| | - Emilio Angelina
- Laboratorio de Estructura Molecular y Propiedades, Área de Química Física, Departamento de Química, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Avda. Libertad 5460, (3400) Corrientes, Argentina
| | - Jiri Kos
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University, Slechtitelu 27, 78371 Olomouc, Czech Republic
| | - Tomas Gonec
- Department of Chemical Drugs, Faculty of Pharmacy, Masaryk University, Palackeho 1, 612 00 Brno, Czech Republic
| | - Pavlina Marvanova
- Department of Chemical Drugs, Faculty of Pharmacy, Masaryk University, Palackeho 1, 612 00 Brno, Czech Republic
| | - Marcela Vettorazzi
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Ejército de los Andes 950, 5700 San Luis, Argentina
| | - Michal Oravec
- Global Change Research Institute CAS, Belidla 986/4a, 603 00 Brno, Czech Republic
| | | | - Josef Jampilek
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University, Slechtitelu 27, 78371 Olomouc, Czech Republic
| | - Sergio E Alvarez
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Ejército de los Andes 950, 5700 San Luis, Argentina.
| | - Ricardo D Enriz
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Ejército de los Andes 950, 5700 San Luis, Argentina.
| |
Collapse
|
12
|
Tosso RD, Parravicini O, Zarycz MNC, Angelina E, Vettorazzi M, Peruchena N, Andujar S, Enriz RD. Conformational and electronic study of dopamine interacting with theD2dopamine receptor. J Comput Chem 2020; 41:1898-1911. [DOI: 10.1002/jcc.26361] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 04/10/2020] [Accepted: 05/22/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Rodrigo D. Tosso
- Facultad de Química, Bioquímica y FarmaciaUniversidad Nacional de San Luis San Luis Argentina
- Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO‐SL)CONICET San Luis Argentina
| | - Oscar Parravicini
- Facultad de Química, Bioquímica y FarmaciaUniversidad Nacional de San Luis San Luis Argentina
- Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO‐SL)CONICET San Luis Argentina
| | - M. Natalia C. Zarycz
- Facultad de Química, Bioquímica y FarmaciaUniversidad Nacional de San Luis San Luis Argentina
- Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO‐SL)CONICET San Luis Argentina
| | - Emilio Angelina
- Laboratorio de Estructura Molecular y PropiedadesFacultad de Ciencias Exactas y Naturales y Agrimensura Corrientes Argentina
- Instituto de Química Básica y Aplicada (IQUIBA‐NEA)CONICET Corrientes Argentina
| | - Marcela Vettorazzi
- Facultad de Química, Bioquímica y FarmaciaUniversidad Nacional de San Luis San Luis Argentina
- Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO‐SL)CONICET San Luis Argentina
| | - Nélida Peruchena
- Laboratorio de Estructura Molecular y PropiedadesFacultad de Ciencias Exactas y Naturales y Agrimensura Corrientes Argentina
- Instituto de Química Básica y Aplicada (IQUIBA‐NEA)CONICET Corrientes Argentina
| | - Sebastián Andujar
- Facultad de Química, Bioquímica y FarmaciaUniversidad Nacional de San Luis San Luis Argentina
- Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO‐SL)CONICET San Luis Argentina
| | - Ricardo D. Enriz
- Facultad de Química, Bioquímica y FarmaciaUniversidad Nacional de San Luis San Luis Argentina
- Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO‐SL)CONICET San Luis Argentina
| |
Collapse
|
13
|
Arylaminopropanone Derivatives as Potential Cholinesterase Inhibitors: Synthesis, Docking Study and Biological Evaluation. Molecules 2020; 25:molecules25071751. [PMID: 32290227 PMCID: PMC7180927 DOI: 10.3390/molecules25071751] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/07/2020] [Accepted: 04/09/2020] [Indexed: 11/18/2022] Open
Abstract
Neurodegenerative diseases in which the decrease of the acetylcholine is observed are growing worldwide. In the present study, a series of new arylaminopropanone derivatives with N-phenylcarbamate moiety (1–16) were prepared as potential acetylcholinesterase and butyrylcholinesterase inhibitors. In vitro enzyme assays were performed; the results are expressed as a percentage of inhibition and the IC50 values. The inhibitory activities were compared with reference drugs galantamine and rivastigmine showing piperidine derivatives (1–3) as the most potent. A possible mechanism of action for these compounds was determined from a molecular modelling study by using combined techniques of docking, molecular dynamics simulations and quantum mechanics calculations.
Collapse
|
14
|
Second-generation 4,5,6,7-tetrahydrobenzo[ d]thiazoles as novel DNA gyrase inhibitors. Future Med Chem 2020; 12:277-297. [PMID: 32043377 DOI: 10.4155/fmc-2019-0127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Aim: DNA gyrase and topoisomerase IV are essential bacterial enzymes, and in the fight against bacterial resistance, they are important targets for the development of novel antibacterial drugs. Results: Building from our first generation of 4,5,6,7-tetrahydrobenzo[d]thiazole-based DNA gyrase inhibitors, we designed and prepared an optimized series of analogs that show improved inhibition of DNA gyrase and topoisomerase IV from Staphylococcus aureus and Escherichia coli, with IC50 values in the nanomolar range. Importantly, these inhibitors also show improved antibacterial activity against Gram-positive strains. Conclusion: The most promising inhibitor, 29, is active against Enterococcus faecalis, Enterococcus faecium and S. aureus wild-type and resistant strains, with minimum inhibitory concentrations between 4 and 8 μg/ml, which represents good starting point for development of novel antibacterials.
Collapse
|
15
|
Silva AG, Vila L, Marques P, Moreno L, Loza M, Sanz MJ, Cortes D, Castro M, Cabedo N. 1-(2'-Bromobenzyl)-6,7-dihydroxy- N-methyl-tetrahydroisoquinoline and 1,2-Demethyl-nuciferine as Agonists in Human D 2 Dopamine Receptors. JOURNAL OF NATURAL PRODUCTS 2020; 83:127-133. [PMID: 31933369 DOI: 10.1021/acs.jnatprod.9b00921] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Certain D2-like dopamine receptor (DR) agonists are useful therapeutically as antiparkinsonian drugs, whereas D2-like DR antagonists or partial agonists are proven effective as antipsychotics. Two isoquinoline derivatives, 1-(2'-bromobenzyl)-6,7-dihydroxy-N-methyl-tetrahydroisoquinoline (Br-BTHIQ, 1) and 1,2-demethyl-nuciferine (aporphine, 2), were herein synthesized, and their dopaminergic affinity in cloned human D2R, D3R, and D4R subtypes and their behavior as agonists/antagonists were evaluated. They showed affinity values (Ki) for hD2, hD3, and hD4 DR within the nanomolar range. The trends in affinity were hD4R ≫ hD3R > hD2R for Br-BTHIQ (1) and hD2R > hD4R > hD3R for 1,2-demethyl-nuciferine (2). The functional assays of cyclic adenosine monophosphate signaling at human D2R showed a partial agonist effect for Br-BTHIQ (1) and full agonist behavior for aporphine (2), with half maximal effective concentration values of 2.95 and 10.2 μM, respectively. Therefore, both isoquinolines 1 and 2 have emerged as lead molecules for the synthesis of new therapeutic drugs that ultimately may be useful to prevent schizophrenia and Parkinson's disease, respectively.
Collapse
Affiliation(s)
- Andrea G Silva
- Center for Research in Molecular Medicine and Chronic Diseases (CiMUS), Department of Pharmacology , Universidad de Santiago de Compostela , 15782 Santiago de Compostela , Spain
| | - Laura Vila
- Institute of Health Research (INCLIVA) , University Clinic Hospital of Valencia , 46010 Valencia , Spain
| | - Patrice Marques
- Institute of Health Research (INCLIVA) , University Clinic Hospital of Valencia , 46010 Valencia , Spain
- Department of Pharmacology, Faculty of Pharmacy , University of Valencia , 46100 Valencia , Spain
- Department of Pharmacology, Faculty of Medicine , University of Valencia , 46010 Valencia , Spain
| | - Laura Moreno
- Department of Pharmacology, Faculty of Pharmacy , University of Valencia , 46100 Valencia , Spain
- Department of Pharmacology, Faculty of Medicine , University of Valencia , 46010 Valencia , Spain
| | - Mabel Loza
- Center for Research in Molecular Medicine and Chronic Diseases (CiMUS), Department of Pharmacology , Universidad de Santiago de Compostela , 15782 Santiago de Compostela , Spain
| | - María-Jesús Sanz
- Institute of Health Research (INCLIVA) , University Clinic Hospital of Valencia , 46010 Valencia , Spain
- Department of Pharmacology, Faculty of Pharmacy , University of Valencia , 46100 Valencia , Spain
- Department of Pharmacology, Faculty of Medicine , University of Valencia , 46010 Valencia , Spain
| | - Diego Cortes
- Department of Pharmacology, Faculty of Pharmacy , University of Valencia , 46100 Valencia , Spain
- Department of Pharmacology, Faculty of Medicine , University of Valencia , 46010 Valencia , Spain
| | - Marián Castro
- Center for Research in Molecular Medicine and Chronic Diseases (CiMUS), Department of Pharmacology , Universidad de Santiago de Compostela , 15782 Santiago de Compostela , Spain
| | - Nuria Cabedo
- Institute of Health Research (INCLIVA) , University Clinic Hospital of Valencia , 46010 Valencia , Spain
- Department of Pharmacology, Faculty of Pharmacy , University of Valencia , 46100 Valencia , Spain
- Department of Pharmacology, Faculty of Medicine , University of Valencia , 46010 Valencia , Spain
| |
Collapse
|
16
|
Quinoline analogs of 2-aminoindane as potential central dopaminergic agents. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02362-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
17
|
Campos LE, Garibotto FM, Angelina E, Kos J, Tomašič T, Zidar N, Kikelj D, Gonec T, Marvanova P, Mokry P, Jampilek J, Alvarez SE, Enriz RD. Searching new structural scaffolds for BRAF inhibitors. An integrative study using theoretical and experimental techniques. Bioorg Chem 2019; 91:103125. [PMID: 31401373 DOI: 10.1016/j.bioorg.2019.103125] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 07/04/2019] [Accepted: 07/11/2019] [Indexed: 01/12/2023]
Abstract
The identification of the V600E activating mutation in the protein kinase BRAF in around 50% of melanoma patients has driven the development of highly potent small inhibitors (BRAFi) of the mutated protein. To date, Dabrafenib and Vemurafenib, two specific BRAFi, have been clinically approved for the treatment of metastatic melanoma. Unfortunately, after the initial response, tumors become resistant and patients develop a progressive and lethal disease, making imperative the development of new therapeutic options. The main objective of this work was to find new BRAF inhibitors with different structural scaffolds than those of the known inhibitors. Our study was carried out in different stages; in the first step we performed a virtual screening that allowed us to identify potential new inhibitors. In the second step, we synthesized and tested the inhibitory activity of the novel compounds founded. Finally, we conducted a molecular modelling study that allowed us to understand interactions at the molecular level that stabilize the formation of the different molecular complexes. Our theoretical and experimental study allowed the identification of four new structural scaffolds, which could be used as starting structures for the design and development of new inhibitors of BRAF. Our experimental data indicate that the most active compounds reduced significantly ERK½ phosphorylation, a measure of BRAF inhibition, and cell viability. Thus, from our theoretical and experimental results, we propose new substituted hydroxynaphthalenecarboxamides, N-(hetero)aryl-piperazinylhydroxyalkylphenylcarbamates, substituted piperazinylethanols and substituted piperazinylpropandiols as initial structures for the development of new inhibitors for BRAF. Moreover, by performing QTAIM analysis, we are able to describe in detail the molecular interactions that stabilize the different Ligand-Receptor complexes. Such analysis indicates which portion of the different molecules must be changed in order to obtain an increase in the binding affinity of these new ligands.
Collapse
Affiliation(s)
- Ludmila E Campos
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de los Andes 950, 5700 San Luis, Argentina; Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Ejército de los Andes 950, 5700 San Luis, Argentina
| | - Francisco M Garibotto
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de los Andes 950, 5700 San Luis, Argentina; Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Ejército de los Andes 950, 5700 San Luis, Argentina
| | - Emilio Angelina
- Laboratorio de Estructura Molecular y Propiedades, Área de Química Física, Departamento de Química, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Avda. Libertad 5460, 3400 Corrientes, Argentina
| | - Jiri Kos
- Division of Biologically Active Complexes and Molecular Magnets, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University Olomouc, Slechtitelu 27, 78371 Olomouc, Czech Republic
| | - Tihomir Tomašič
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Nace Zidar
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Danijel Kikelj
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Tomas Gonec
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1, 61242 Brno, Czech Republic
| | - Pavlina Marvanova
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1, 61242 Brno, Czech Republic
| | - Petr Mokry
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1, 61242 Brno, Czech Republic
| | - Josef Jampilek
- Division of Biologically Active Complexes and Molecular Magnets, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University Olomouc, Slechtitelu 27, 78371 Olomouc, Czech Republic; Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 84215 Bratislava, Slovakia
| | - Sergio E Alvarez
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de los Andes 950, 5700 San Luis, Argentina; Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Ejército de los Andes 950, 5700 San Luis, Argentina.
| | - Ricardo D Enriz
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Ejército de los Andes 950, 5700 San Luis, Argentina; Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Ejército de los Andes 950, 5700 San Luis, Argentina.
| |
Collapse
|
18
|
Indole-substituted 2,4-diamino-5,8-dihydropyrido[2,3-d]pyrimidines from one-pot process and evaluation of their ability to bind dopamine receptors. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
19
|
Saravanan K, Sivanandam M, Hunday G, Mathiyalagan L, Kumaradhas P. Investigation of intermolecular interactions and stability of verubecestat in the active site of BACE1: Development of first model from QM/MM-based charge density and MD analysis. J Biomol Struct Dyn 2018; 37:2339-2354. [DOI: 10.1080/07391102.2018.1479661] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Kandasamy Saravanan
- Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Magudeeswaran Sivanandam
- Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Govindasamy Hunday
- Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Lakshmanan Mathiyalagan
- Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Poomani Kumaradhas
- Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem 636 011, Tamil Nadu, India
| |
Collapse
|
20
|
Luchi A, Angelina E, Bogado L, Forli S, Olson A, Peruchena N. Flap-site Fragment Restores Back Wild-type Behaviour in Resistant Form of HIV Protease. Mol Inform 2018; 37:e1800053. [PMID: 30051611 DOI: 10.1002/minf.201800053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 07/11/2018] [Indexed: 11/09/2022]
Abstract
HIV-1 protease (HIV-PR) performs a vital step in the virus life cycle which makes it an excellent target for drug therapy. However, due to the error-prone of HIV reverse transcriptase, mutations in HIV-PR often occur, inducing drug-resistance to inhibitors. Some HIV-PR mutations can make the flaps of the enzyme more flexible thus increasing the flaps opening rate and inhibitor releasing. It has been shown that by targeting novel binding sites on HIV-PR with small molecules, it is possible to alter the equilibrium of flap conformational states. A previous fragment-based crystallographic screen have found two novel binding sites for small fragments in the inhibited, closed form of HIV-PR, termed flap and exo sites. While these experiments were performed in wild type HIV-PR, it still remains to be proven whether these small fragments can stabilize the closed conformation of flaps in resistant forms of the enzyme. Here we performed Molecular Dynamics simulations of wild type and mutant form of HIV-PR bound to inhibitor TL-3. Simulations show that on going from wild type to 6X mutant the equilibrium shifts from closed to semi-open conformation of flaps. However, when fragment Br6 is placed at flap site of mutant form, the enzyme is restored back to closed conformation. This finding supports the hypothesis that allosteric inhibitors, together with active site inhibitors could increase the number of point mutations necessary for appreciable clinical resistance to AIDS therapy.
Collapse
Affiliation(s)
- Adriano Luchi
- Lab. Estructura Molecular y Propiedades, IQUIBA-NEA, Universidad Nacional del Nordeste, CONICET, FACENA, Av. Libertad 5470, Corrientes, 3400, Argentina
| | - Emilio Angelina
- Lab. Estructura Molecular y Propiedades, IQUIBA-NEA, Universidad Nacional del Nordeste, CONICET, FACENA, Av. Libertad 5470, Corrientes, 3400, Argentina
| | - Lucrecia Bogado
- Lab. Estructura Molecular y Propiedades, IQUIBA-NEA, Universidad Nacional del Nordeste, CONICET, FACENA, Av. Libertad 5470, Corrientes, 3400, Argentina
| | - Stefano Forli
- Molecular Graphics Lab, Department of Integrative Structural and Computational Biology, MB-112, the Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037-1000
| | - Arthur Olson
- Molecular Graphics Lab, Department of Integrative Structural and Computational Biology, MB-112, the Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037-1000
| | - Nélida Peruchena
- Lab. Estructura Molecular y Propiedades, IQUIBA-NEA, Universidad Nacional del Nordeste, CONICET, FACENA, Av. Libertad 5470, Corrientes, 3400, Argentina
| |
Collapse
|
21
|
Theoretical models to predict the inhibitory effect of ligands of sphingosine kinase 1 using QTAIM calculations and hydrogen bond dynamic propensity analysis. J Comput Aided Mol Des 2018; 32:781-791. [DOI: 10.1007/s10822-018-0129-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 07/02/2018] [Indexed: 11/27/2022]
|
22
|
Ortiz JE, Garro A, Pigni NB, Agüero MB, Roitman G, Slanis A, Enriz RD, Feresin GE, Bastida J, Tapia A. Cholinesterase-inhibitory effect and in silico analysis of alkaloids from bulbs of Hieronymiella species. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 39:66-74. [PMID: 29433685 DOI: 10.1016/j.phymed.2017.12.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 10/26/2017] [Accepted: 12/19/2017] [Indexed: 05/27/2023]
Abstract
BACKGROUND In Argentina, the Amaryllidaceae family (59 species) comprises a wide variety of genera, only a few species have been investigated as a potential source of cholinesterases inhibitors to treat Alzheimer disease (AD). PURPOSE To study the acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory activities of the basic dichloromethane extracts (E) from Hieronymiella aurea, H. caletensis, H. clidanthoides, H. marginata, and H. speciosa species, as well as the isolated compounds from these plant extracts. STUDY DESIGN AND METHODS AChE and BChE inhibitory activities were evaluated with the Ellman's spectrophotometric method. The alkaloids composition from the E was obtained by gas chromatography-mass spectrometry (GC-MS). The E were successively chromatographed on a silica gel column and permeated on Sephadex LH-20 column to afford the main alkaloids identified by means of spectroscopic data. Additionally, an in silico study was carried out. RESULTS Nine known alkaloids were isolated from the E of five Hieronymiella species. Galanthamine was identified in all the species by GC-MS standing out H. caletensis with a relative abundance of 9.79% of the total ion current. Strong AChE (IC50 = 1.84 - 15.40 µg/ml) and moderate BChE (IC50 = 23.74 - 136.40 µg/ml) inhibitory activities were displayed by the extracts. Among the isolated alkaloids, only sanguinine and chlidanthine (galanthamine-type alkaloids) demonstrated inhibitory activity toward both enzymes. The QTAIM study suggests that sanguinine has the strongest affinity towards AChE, attributed to an additional interaction with Ser200 as well as stronger molecular interactions Glu199 and His440.These results allowed us to differentiate the molecular behavior in the active site among alkaloids possessing different in vitro inhibitory activities. CONCLUSION Hieronymiella species growing in Argentina represent a rich and widespread source of galanthamine and others AChE and BChE inhibitors alkaloids. Additionally, the new trend towards the use of natural extracts as pharmaceuticals rather than pure drugs opens a pathway for the development of a phytomedicine derived from extracts of Hieronymiella spp.
Collapse
Affiliation(s)
- Javier E Ortiz
- Instituto de Biotecnología-Instituto de Ciencias Básicas, CONICET, Facultad de Ingeniería, Universidad Nacional de San Juan, Av. Libertador General San Martín 1109 (O), San Juan CP 5400, Argentina
| | - Adriana Garro
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco 915, San Luis 5700, Argentina
| | - Natalia B Pigni
- ICYTAC-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina; Departament de Productes Naturals, Biologia Vegetal i Edafologia, Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXIII s/n, Barcelona 08028, Spain
| | - María Belén Agüero
- Instituto de Biotecnología-Instituto de Ciencias Básicas, CONICET, Facultad de Ingeniería, Universidad Nacional de San Juan, Av. Libertador General San Martín 1109 (O), San Juan CP 5400, Argentina
| | - German Roitman
- Cátedra de Jardinería, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires 1417, Argentina
| | - Alberto Slanis
- Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, Fundación Miguel Lillo 251, Tucumán, Argentina
| | - Ricardo D Enriz
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco 915, San Luis 5700, Argentina
| | - Gabriela E Feresin
- Instituto de Biotecnología-Instituto de Ciencias Básicas, CONICET, Facultad de Ingeniería, Universidad Nacional de San Juan, Av. Libertador General San Martín 1109 (O), San Juan CP 5400, Argentina
| | - Jaume Bastida
- Departament de Productes Naturals, Biologia Vegetal i Edafologia, Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXIII s/n, Barcelona 08028, Spain
| | - Alejandro Tapia
- Instituto de Biotecnología-Instituto de Ciencias Básicas, CONICET, Facultad de Ingeniería, Universidad Nacional de San Juan, Av. Libertador General San Martín 1109 (O), San Juan CP 5400, Argentina.
| |
Collapse
|
23
|
Luková K, Nesvadba R, Uhlíková T, Obenchain DA, Wachsmuth D, Grabow JU, Urban Š. Ab initio conformational analysis of 1,2,3,4-tetrahydroquinoline and the high-resolution rotational spectrum of its lowest energy conformer. Phys Chem Chem Phys 2018; 20:14664-14670. [DOI: 10.1039/c8cp00953h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The tight combination of rotational spectroscopy and quantum-chemical calculations provides an insight into the molecular physics of the lowest energy conformer of 1,2,3,4-tetrahydroquinoline.
Collapse
Affiliation(s)
- Kateřina Luková
- Department of Analytical Chemistry
- University of Chemistry and Technology
- Prague 6
- Czech Republic
| | - Radim Nesvadba
- Department of Analytical Chemistry
- University of Chemistry and Technology
- Prague 6
- Czech Republic
| | - Tereza Uhlíková
- Department of Analytical Chemistry
- University of Chemistry and Technology
- Prague 6
- Czech Republic
| | - Daniel A. Obenchain
- Institut für Physikalische Chemie und Elektrochemie
- Wilhelm-Gottfried-Leibniz-Universität Hannover
- 30167 Hannover
- Germany
| | - Dennis Wachsmuth
- Institut für Physikalische Chemie und Elektrochemie
- Wilhelm-Gottfried-Leibniz-Universität Hannover
- 30167 Hannover
- Germany
| | - Jens-Uwe Grabow
- Institut für Physikalische Chemie und Elektrochemie
- Wilhelm-Gottfried-Leibniz-Universität Hannover
- 30167 Hannover
- Germany
| | - Štěpán Urban
- Department of Analytical Chemistry
- University of Chemistry and Technology
- Prague 6
- Czech Republic
| |
Collapse
|
24
|
Padrtova T, Marvanova P, Odehnalova K, Kubinova R, Parravicini O, Garro A, Enriz RD, Humpa O, Oravec M, Mokry P. Synthesis, Analysis, Cholinesterase-Inhibiting Activity and Molecular Modelling Studies of 3-(Dialkylamino)-2-hydroxypropyl 4-[(Alkoxy-carbonyl)amino]benzoates and Their Quaternary Ammonium Salts. Molecules 2017; 22:molecules22122048. [PMID: 29168793 PMCID: PMC6149889 DOI: 10.3390/molecules22122048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 11/08/2017] [Accepted: 11/21/2017] [Indexed: 11/16/2022] Open
Abstract
Tertiary amines 3-(dialkylamino)-2-hydroxypropyl 4-[(alkoxycarbonyl)amino]benzoates and their quaternary ammonium salts were synthesized. The final step of synthesis of quaternary ammonium salts was carried out by microwave-assisted synthesis. Software-calculated data provided the background needed to compare fifteen new resulting compounds by their physicochemical properties. The acid dissociation constant (pKa) and lipophilicity index (log P) of tertiary amines were determined; while quaternary ammonium salts were characterized by software-calculated lipophilicity index and surface tension. Biological evaluation aimed at testing acetylcholinesterase and butyrylcholinesterase-inhibiting activity of synthesized compounds. A possible mechanism of action of these compounds was determined by molecular modelling study using combined techniques of docking; molecular dynamics simulations and quantum mechanics calculations.
Collapse
Affiliation(s)
- Tereza Padrtova
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Palackeho 1, 61242 Brno, Czech Republic.
| | - Pavlina Marvanova
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Palackeho 1, 61242 Brno, Czech Republic.
| | - Klara Odehnalova
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Palackeho 1, 61242 Brno, Czech Republic.
| | - Renata Kubinova
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Palackeho 1, 61242 Brno, Czech Republic.
| | - Oscar Parravicini
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis-IMIBIO-SL-CONICET, Chacabuco 915, San Luis 5700, Argentina.
| | - Adriana Garro
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis-IMIBIO-SL-CONICET, Chacabuco 915, San Luis 5700, Argentina.
| | - Ricardo D Enriz
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis-IMIBIO-SL-CONICET, Chacabuco 915, San Luis 5700, Argentina.
| | - Otakar Humpa
- CEITEC-Central European Institute of Technology, Masaryk University, Kamenice 753/5, 62500 Brno, Czech Republic.
| | - Michal Oravec
- Global Change Research Institute CAS, Belidla 986/4a, 60300 Brno, Czech Republic.
| | - Petr Mokry
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Palackeho 1, 61242 Brno, Czech Republic.
| |
Collapse
|
25
|
Tetrahydroisoquinolines functionalized with carbamates as selective ligands of D2 dopamine receptor. J Mol Model 2017; 23:273. [DOI: 10.1007/s00894-017-3441-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 08/15/2017] [Indexed: 01/11/2023]
|
26
|
Petelski AN, Peruchena NM, Pamies SC, Sosa GL. Insights into the self-assembly steps of cyanuric acid toward rosette motifs: a DFT study. J Mol Model 2017; 23:263. [PMID: 28808800 DOI: 10.1007/s00894-017-3428-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 07/19/2017] [Indexed: 11/28/2022]
Abstract
The nature of non-covalent interactions in self-assembling systems is a topic that has aroused great attention in literature. In this field, the 1,3,5-triazinane-2,4,6-trione or cyanuric acid (CA) is one of the most widely used molecules to formulate self-assembled materials or monolayers. In the present work, a variety of molecular aggregates of CA are examined using three different DFT functionals (B3LYP, B3LYP-D3, and ω-B97XD) in the framework of the quantum theory of atoms in molecules (QTAIM) and natural bond orbital (NBO) analysis. Herein, a step by step aggregation path is proposed and the origin of cooperative effects is also examined. It is shown that a greater cooperativity is not always associated with a greater binding energy, and the greatest cooperative effect occurs with highly directional hydrogen bonds. The intramolecular charge transfers play a key role in this effect. Graphical abstract The noncovalent interactions in cyanuric acid supramolecules were analyzed. The calculations provide insights into the self-assembly steps from dimers to rosette-like motif. The complexes with collinear hydrogen bonds show positive cooperativity, while in the arrangement with double hydrogen bonds the cooperative effect is essentially zero.
Collapse
Affiliation(s)
- Andre N Petelski
- Grupo de Investigación en Química Teórica y Experimental (QuiTEx), Departamento de Ingeniería Química, Facultad Regional Resistencia, Universidad Tecnológica Nacional, French 414 (H3500CHJ), Resistencia, Chaco, Argentina.,Instituto de Química Básica y Aplicada del Nordeste Argentino (IQUIBA-NEA), UNNE-CONICET, Avenida Libertad 5460 (3400), Corrientes, Argentina
| | - Nélida M Peruchena
- Instituto de Química Básica y Aplicada del Nordeste Argentino (IQUIBA-NEA), UNNE-CONICET, Avenida Libertad 5460 (3400), Corrientes, Argentina. .,Laboratorio de Estructura Molecular y Propiedades (LEMYP), Área de Química Física, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Avenida Libertad 5460 (3400), Corrientes, Argentina.
| | - Silvana C Pamies
- Grupo de Investigación en Química Teórica y Experimental (QuiTEx), Departamento de Ingeniería Química, Facultad Regional Resistencia, Universidad Tecnológica Nacional, French 414 (H3500CHJ), Resistencia, Chaco, Argentina
| | - Gladis L Sosa
- Grupo de Investigación en Química Teórica y Experimental (QuiTEx), Departamento de Ingeniería Química, Facultad Regional Resistencia, Universidad Tecnológica Nacional, French 414 (H3500CHJ), Resistencia, Chaco, Argentina. .,Instituto de Química Básica y Aplicada del Nordeste Argentino (IQUIBA-NEA), UNNE-CONICET, Avenida Libertad 5460 (3400), Corrientes, Argentina.
| |
Collapse
|
27
|
Vettorazzi M, Angelina E, Lima S, Gonec T, Otevrel J, Marvanova P, Padrtova T, Mokry P, Bobal P, Acosta LM, Palma A, Cobo J, Bobalova J, Csollei J, Malik I, Alvarez S, Spiegel S, Jampilek J, Enriz RD. An integrative study to identify novel scaffolds for sphingosine kinase 1 inhibitors. Eur J Med Chem 2017; 139:461-481. [PMID: 28822281 DOI: 10.1016/j.ejmech.2017.08.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 08/02/2017] [Accepted: 08/05/2017] [Indexed: 10/19/2022]
Abstract
Sphingosine kinase 1 (SphK1), the enzyme that produces the bioactive sphingolipid metabolite, sphingosine-1-phosphate, is a promising new molecular target for therapeutic intervention in cancer and inflammatory diseases. In view of its importance, the main objective of this work was to find new and more potent inhibitors for this enzyme possessing different structural scaffolds than those of the known inhibitors. Our theoretical and experimental study has allowed us to identify two new structural scaffolds (three new compounds), which could be used as starting structures for the design and then the development of new inhibitors of SphK1. Our study was carried out in different steps: virtual screening, synthesis, bioassays and molecular modelling. From our results, we propose a new dihydrobenzo[b]pyrimido[5,4-f]azepine and two alkyl{3-/4-[1-hydroxy-2-(4-arylpiperazin-1-yl)ethyl]phenyl}carbamates as initial structures for the development of new inhibitors. In addition, our molecular modelling study using QTAIM calculations, allowed us to describe in detail the molecular interactions that stabilize the different Ligand-Receptor complexes. Such analyses indicate that the cationic head of the different compounds must be refined in order to obtain an increase in the binding affinity of these ligands.
Collapse
Affiliation(s)
- Marcela Vettorazzi
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Chacabuco 915, 5700 San Luis, Argentina
| | - Emilio Angelina
- Laboratorio de Estructura Molecular y Propiedades, Área de Química Física, Departamento de Química, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Avda. Libertad 5460, 3400 Corrientes, Argentina
| | - Santiago Lima
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, VA 23298 USA
| | - Tomas Gonec
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1, 612 42 Brno, Czech Republic
| | - Jan Otevrel
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1, 612 42 Brno, Czech Republic
| | - Pavlina Marvanova
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1, 612 42 Brno, Czech Republic
| | - Tereza Padrtova
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1, 612 42 Brno, Czech Republic
| | - Petr Mokry
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1, 612 42 Brno, Czech Republic
| | - Pavel Bobal
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1, 612 42 Brno, Czech Republic
| | - Lina M Acosta
- Laboratorio de Síntesis Orgánica, Escuela de Química, Universidad Industrial de Santander, Carrera 27, Calle 9, A.A 678, Bucaramanga, Colombia
| | - Alirio Palma
- Laboratorio de Síntesis Orgánica, Escuela de Química, Universidad Industrial de Santander, Carrera 27, Calle 9, A.A 678, Bucaramanga, Colombia
| | - Justo Cobo
- Inorganic and Organic Department, University of Jaén, Campus Las Lagunillas s/n, 23071, Jaén, Spain
| | - Janette Bobalova
- Institute of Analytical Chemistry of the Czech Academy of Sciences, v. v. i., Veveri 97, 602 00 Brno, Czech Republic
| | - Jozef Csollei
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1, 612 42 Brno, Czech Republic; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojarov 10, 83232 Bratislava, Slovakia
| | - Ivan Malik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojarov 10, 83232 Bratislava, Slovakia
| | - Sergio Alvarez
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Chacabuco 915, 5700 San Luis, Argentina
| | - Sarah Spiegel
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, VA 23298 USA
| | - Josef Jampilek
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojarov 10, 83232 Bratislava, Slovakia
| | - Ricardo D Enriz
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas (IMIBIO-SL), Chacabuco 915, 5700 San Luis, Argentina.
| |
Collapse
|
28
|
Petelski AN, Pamies SC, Benítez EI, Rovaletti MML, Sosa GL. Molecular Insights into Protein-Polyphenols Aggregation: A Dynamic and Topological Description. ChemistrySelect 2017. [DOI: 10.1002/slct.201700726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- André N. Petelski
- Chemical Engineering Department. Grupo de Investigación en Química Teórica y Experimental (QuiTEx), Facultad Regional Resistencia; Universidad Tecnológica Nacional; French 414 H3500CHJ) Resistencia, Chaco Argentina
- Instituto de Química Básica y Aplicada del Nordeste Argentino (IQUIBA-NEA), UNNE-CONICET.; Avenida Libertad 5460 3400) Corrientes Argentina
| | - Silvana C. Pamies
- Chemical Engineering Department. Grupo de Investigación en Química Teórica y Experimental (QuiTEx), Facultad Regional Resistencia; Universidad Tecnológica Nacional; French 414 H3500CHJ) Resistencia, Chaco Argentina
| | - Elisa I. Benítez
- Chemical Engineering Department. Grupo de Investigación en Química Teórica y Experimental (QuiTEx), Facultad Regional Resistencia; Universidad Tecnológica Nacional; French 414 H3500CHJ) Resistencia, Chaco Argentina
- Instituto de Química Básica y Aplicada del Nordeste Argentino (IQUIBA-NEA), UNNE-CONICET.; Avenida Libertad 5460 3400) Corrientes Argentina
| | - María M. Lataza Rovaletti
- Chemical Engineering Department. Grupo de Investigación en Química Teórica y Experimental (QuiTEx), Facultad Regional Resistencia; Universidad Tecnológica Nacional; French 414 H3500CHJ) Resistencia, Chaco Argentina
| | - Gladis L. Sosa
- Chemical Engineering Department. Grupo de Investigación en Química Teórica y Experimental (QuiTEx), Facultad Regional Resistencia; Universidad Tecnológica Nacional; French 414 H3500CHJ) Resistencia, Chaco Argentina
- Instituto de Química Básica y Aplicada del Nordeste Argentino (IQUIBA-NEA), UNNE-CONICET.; Avenida Libertad 5460 3400) Corrientes Argentina
| |
Collapse
|
29
|
The electronic density obtained from a QTAIM analysis used as molecular descriptor. A study performed in a new series of DHFR inhibitors. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
30
|
The Eighth Central European Conference "Chemistry towards Biology": Snapshot. Molecules 2016; 21:molecules21101381. [PMID: 27763518 PMCID: PMC5283649 DOI: 10.3390/molecules21101381] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 10/12/2016] [Indexed: 01/27/2023] Open
Abstract
The Eighth Central European Conference "Chemistry towards Biology" was held in Brno, Czech Republic, on August 28-September 1, 2016 to bring together experts in biology, chemistry and design of bioactive compounds; promote the exchange of scientific results, methods and ideas; and encourage cooperation between researchers from all over the world. The topics of the conference covered "Chemistry towards Biology", meaning that the event welcomed chemists working on biology-related problems, biologists using chemical methods, and students and other researchers of the respective areas that fall within the common scope of chemistry and biology. The authors of this manuscript are plenary speakers and other participants of the symposium and members of their research teams. The following summary highlights the major points/topics of the meeting.
Collapse
|
31
|
Párraga J, Andujar SA, Rojas S, Gutierrez LJ, El Aouad N, Sanz MJ, Enriz RD, Cabedo N, Cortes D. Dopaminergic isoquinolines with hexahydrocyclopenta[ij]-isoquinolines as D2-like selective ligands. Eur J Med Chem 2016; 122:27-42. [PMID: 27343851 DOI: 10.1016/j.ejmech.2016.06.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 06/07/2016] [Accepted: 06/08/2016] [Indexed: 01/11/2023]
Abstract
Dopamine receptors (DR) ligands are potential drug candidates for treating neurological disorders including schizophrenia or Parkinson's disease. Three series of isoquinolines: (E)-1-styryl-1,2,3,4-tetrahydroisoquinolines (series 1), 7-phenyl-1,2,3,7,8,8a-hexahydrocyclopenta[ij]-IQs (HCPIQs) (series 2) and (E)-1-(prop-1-en-1-yl)-1,2,3,4- tetrahydroisoquinolines (series 3), were prepared to determine their affinity for both D1 and D2-like DR. The effect of different substituents on the nitrogen atom (methyl or allyl), the dioxygenated function (methoxyl or catechol), the substituent at the β-position of the THIQ skeleton, and the presence or absence of the cyclopentane motif, were studied. We observed that the most active compounds in the three series (2c, 2e, 3a, 3c, 3e, 5c and 5e) possessed a high affinity for D2-like DR and these remarkable features: a catechol group in the IQ-ring and the N-substitution (methyl or allyl). The series showed the following trend to D2-RD affinity: HCPIQs > 1-styryl > 1-propenyl. Therefore, the substituent at the β-position of the THIQ and the cyclopentane ring also modulated this affinity. Among these dopaminergic isoquinolines, HCPIQs stood out for unexpected selectivity to D2-DR since the Ki D1/D2 ratio reached values of 2465, 1010 and 382 for compounds 3a, 3c and 3e, respectively. None of the most active THIQs in D2 DR displayed relevant cytotoxicity in human neutrophils and HUVEC. Finally, and in agreement with the experimental data, molecular modeling studies on DRs of the most characteristic ligands of the three series revealed stronger molecular interactions with D2 DR than with D1 DR, which further supports to the encountered enhanced selectivity to D2 DR.
Collapse
Affiliation(s)
- Javier Párraga
- Departamento de Farmacología, Laboratorio de Farmacoquímica, Facultad de Farmacia, Universidad de Valencia, 46100, Burjassot, Valencia, Spain
| | - Sebastián A Andujar
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis-IMIBIO-SL, Chacabuco 915, 5700, San Luis, Argentina
| | - Sebastián Rojas
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis-IMIBIO-SL, Chacabuco 915, 5700, San Luis, Argentina
| | - Lucas J Gutierrez
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis-IMIBIO-SL, Chacabuco 915, 5700, San Luis, Argentina
| | | | - M Jesús Sanz
- Institute of Health Research-INCLIVA, University Clinic Hospital of Valencia, 46010, Valencia, Spain; Departamento de Farmacología, Facultad de Medicina, Universidad de Valencia, 46010, Valencia, Spain
| | - Ricardo D Enriz
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis-IMIBIO-SL, Chacabuco 915, 5700, San Luis, Argentina
| | - Nuria Cabedo
- Institute of Health Research-INCLIVA, University Clinic Hospital of Valencia, 46010, Valencia, Spain.
| | - Diego Cortes
- Departamento de Farmacología, Laboratorio de Farmacoquímica, Facultad de Farmacia, Universidad de Valencia, 46100, Burjassot, Valencia, Spain.
| |
Collapse
|
32
|
Ortiz JE, Pigni NB, Andujar SA, Roitman G, Suvire FD, Enriz RD, Tapia A, Bastida J, Feresin GE. Alkaloids from Hippeastrum argentinum and Their Cholinesterase-Inhibitory Activities: An in Vitro and in Silico Study. JOURNAL OF NATURAL PRODUCTS 2016; 79:1241-8. [PMID: 27096334 DOI: 10.1021/acs.jnatprod.5b00785] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Two new alkaloids, 4-O-methylnangustine (1) and 7-hydroxyclivonine (2) (montanine and homolycorine types, respectively), and four known alkaloids were isolated from the bulbs of Hippeastrum argentinum, and their cholinesterase-inhibitory activities were evaluated. These compounds were identified using GC-MS, and their structures were defined by physical data analysis. Compound 2 showed weak butyrylcholinesterase (BuChE)-inhibitory activity, with a half-maximal inhibitory concentration (IC50) value of 67.3 ± 0.09 μM. To better understand the experimental results, a molecular modeling study was also performed. The combination of a docking study, molecular dynamics simulations, and quantum theory of atoms in molecules calculations provides new insight into the molecular interactions of compound 2 with BuChE, which were compared to those of galantamine.
Collapse
Affiliation(s)
- Javier E Ortiz
- Instituto de Biotecnología, Facultad de Ingeniería, Universidad Nacional de San Juan , Avenida Libertador General San Martín 1109 (O), 5400 San Juan, Argentina
| | - Natalia B Pigni
- Departament de Productes Naturals, Biologia Vegetal i Edafologia, Facultat de Farmàcia, Universitat de Barcelona , Avenida Joan XXIII s/n, 08028 Barcelona, Spain
- ICYTAC-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , 5000 Córdoba, Argentina
| | - Sebastián A Andujar
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis , Chacabuco 915, 5700 San Luis, Argentina
| | - German Roitman
- Cátedra de Jardinería, Facultad de Agronomía, Universidad de Buenos Aires , Avenida San Martín 4453, 1417 Buenos Aires, Argentina
| | - Fernando D Suvire
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis , Chacabuco 915, 5700 San Luis, Argentina
| | - Ricardo D Enriz
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis , Chacabuco 915, 5700 San Luis, Argentina
| | - Alejandro Tapia
- Instituto de Biotecnología, Facultad de Ingeniería, Universidad Nacional de San Juan , Avenida Libertador General San Martín 1109 (O), 5400 San Juan, Argentina
| | - Jaume Bastida
- Departament de Productes Naturals, Biologia Vegetal i Edafologia, Facultat de Farmàcia, Universitat de Barcelona , Avenida Joan XXIII s/n, 08028 Barcelona, Spain
| | - Gabriela E Feresin
- Instituto de Biotecnología, Facultad de Ingeniería, Universidad Nacional de San Juan , Avenida Libertador General San Martín 1109 (O), 5400 San Juan, Argentina
| |
Collapse
|
33
|
Luchi AM, Angelina EL, Andujar SA, Enriz RD, Peruchena NM. Halogen bonding in biological context: a computational study of D2 dopamine receptor. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3586] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Adriano M. Luchi
- Lab. Estructura Molecular y Propiedades, IQUIBA-NEA; Universidad Nacional del Nordeste, CONICET, FACENA; Av. Libertad 5470 Corrientes 3400 Argentina
| | - Emilio L. Angelina
- Lab. Estructura Molecular y Propiedades, IQUIBA-NEA; Universidad Nacional del Nordeste, CONICET, FACENA; Av. Libertad 5470 Corrientes 3400 Argentina
| | - Sebastián A. Andujar
- Instituto Multidisciplinario de Investigaciones Biológicas San Luis; Universidad Nacional de San Luis, CONICET, FQBF; Chacabuco 917 San Luis 5700 Argentina
| | - Ricardo D. Enriz
- Instituto Multidisciplinario de Investigaciones Biológicas San Luis; Universidad Nacional de San Luis, CONICET, FQBF; Chacabuco 917 San Luis 5700 Argentina
| | - Nélida M. Peruchena
- Lab. Estructura Molecular y Propiedades, IQUIBA-NEA; Universidad Nacional del Nordeste, CONICET, FACENA; Av. Libertad 5470 Corrientes 3400 Argentina
| |
Collapse
|
34
|
Gutierrez LJ, Angelina E, Gyebrovszki A, Fülöp L, Peruchena N, Baldoni HA, Penke B, Enriz RD. New small-size peptides modulators of the exosite of BACE1 obtained from a structure-based design. J Biomol Struct Dyn 2016; 35:413-426. [DOI: 10.1080/07391102.2016.1145143] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Lucas J. Gutierrez
- Laboratorio de Estructura Molecular y Propiedades, Área de Química Física, Departamento de Químicam, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5470, Corrientes 3400, Argentina
| | - Emilio Angelina
- Laboratorio de Estructura Molecular y Propiedades, Área de Química Física, Departamento de Químicam, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5470, Corrientes 3400, Argentina
- Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL, CONICET), Ejercito de Los Andes 950, 5700 San Luis, Argentina
| | - Andrea Gyebrovszki
- Department of Medical Chemistry, University of Szeged, H-6720 Szeged, Dóm tér 8., Hungary
| | - Lívia Fülöp
- Department of Medical Chemistry, University of Szeged, H-6720 Szeged, Dóm tér 8., Hungary
| | - Nelida Peruchena
- Laboratorio de Estructura Molecular y Propiedades, Área de Química Física, Departamento de Químicam, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5470, Corrientes 3400, Argentina
| | - Héctor A. Baldoni
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco 917, 5700 San Luis, Argentina
- Instituto de Matemática Aplicada San Luis (IMASL,CONICET), Italia 1556, 5700 San Luis, Argentina
| | - Botond Penke
- Department of Medical Chemistry, University of Szeged, H-6720 Szeged, Dóm tér 8., Hungary
| | - Ricardo D. Enriz
- Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL, CONICET), Ejercito de Los Andes 950, 5700 San Luis, Argentina
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco 917, 5700 San Luis, Argentina
| |
Collapse
|
35
|
Sukker GM, Wazzan N, Ahmed A, Hilal R. Conformation and electronic structure of Carbidopa. A QM/MD study. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2016. [DOI: 10.1142/s0219633616500024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Carbidopa (CD) is a drug used in combination with L-dopa (LD) in treatment of Parkinson’s disease (PD). CD is an inhibitor for enzyme decarboxylase, yet its mode of action is not entirely known although it is believed to involve enzyme shape recognition. The present work attempts to investigate the conformational preferences of CD. Tight geometry optimization at the density functional theory (DFT)/B3LYP/6-311[Formula: see text]G** level of theory has been carried out. The shallow nature of the potential energy surface (PES) and the presence of several local minima within a small energy range necessitate the launching of DFT-based molecular dynamics (MD) simulations. Two MD experiments were submitted for 35,000 points each. The complete trajectory in time domain of 10.5 ps is analyzed and discussed. The global minimum energy structure of CD is localized and identified by subsequent frequency calculations. The quantum theory of atom in molecules (QTAIMs) is used to extract and compare the quantum chemical topology features of the electron density distribution in CD and LD. Bonding characteristics are analyzed and discussed within the natural bond orbital (NBO) framework.
Collapse
Affiliation(s)
- Ghader M. Sukker
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Nuha Wazzan
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ashour Ahmed
- Chemistry Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
- University of Rostock, Institute of Physics, D-18051 Rostock, Germany
- University of Rostock, Soil Science, D-18051 Rostock, Germany
- Steinbeis GmbH & Co. KG für Technologietransfer, 70174 Stuttgart, Germany
| | - Rifaat Hilal
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Chemistry Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| |
Collapse
|
36
|
Skúpa K, Melicherčík M, Urban J. A computational study of the interaction between dopamine and DNA/RNA nucleosides. J Mol Model 2015; 21:241. [PMID: 26305049 DOI: 10.1007/s00894-015-2788-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 08/11/2015] [Indexed: 11/26/2022]
Abstract
The interaction between protonated dopamine and neutral RNA and DNA nucleosides was studied by means of density functional theory calculations in vacuum and in implicit water. On the most stable complexes formed with each of the nucleosides, the vertical absorption excitation energies were evaluated and compared with the values of separated dopamine and corresponding nucleoside. The most stable complex was formed with guanosine and the spectral changes in this complex resulted in a significant reduction of the oscillator strength of the first dopamine's transition. In the first guanosine's transition, a redshift of 0.2 eV was found combined with a reduction of the oscillator strength.
Collapse
Affiliation(s)
- Katarína Skúpa
- Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Bratislava, Slovakia,
| | | | | |
Collapse
|
37
|
Synthesis of hexahydrocyclopenta[ij]isoquinolines as a new class of dopaminergic agents. Eur J Med Chem 2015; 90:101-6. [DOI: 10.1016/j.ejmech.2014.11.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 10/29/2014] [Accepted: 11/05/2014] [Indexed: 01/11/2023]
|
38
|
Angelina E, Andujar S, Moreno L, Garibotto F, Párraga J, Peruchena N, Cabedo N, Villecco M, Cortes D, Enriz RD. 3-Chlorotyramine Acting as Ligand of the D2
Dopamine Receptor. Molecular Modeling, Synthesis and D2
Receptor Affinity. Mol Inform 2014; 34:28-43. [DOI: 10.1002/minf.201400093] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 09/04/2014] [Indexed: 12/12/2022]
|
39
|
Angelina EL, Andujar SA, Tosso RD, Enriz RD, Peruchena NM. Non-covalent interactions in receptor-ligand complexes. A study based on the electron charge density. J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3250] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Emilio L. Angelina
- Lab. Estructura Molecular y Propiedades, Área de Química Física, Departamento de Química, Facultad de Ciencias Exactas y Naturales y Agrimensura; Universidad Nacional del Nordeste; Av. Libertad 5470 Corrientes 3400 Argentina
- Instituto Multidiciplinario de Investigaciones Biológicas (IMIBIO-SL, CONICET); Chacabuco y Pedrenera (5700) San Luis Argentina
| | - Sebastián A. Andujar
- Departamento de Química, Facultad de Química, Bioquímica y Farmacia; Universidad Nacional de San Luis; Chacabuco 917, San Luis (5700) San Luis Argentina
- Instituto Multidiciplinario de Investigaciones Biológicas (IMIBIO-SL, CONICET); Chacabuco y Pedrenera (5700) San Luis Argentina
| | - Rodrigo D. Tosso
- Departamento de Química, Facultad de Química, Bioquímica y Farmacia; Universidad Nacional de San Luis; Chacabuco 917, San Luis (5700) San Luis Argentina
- Instituto Multidiciplinario de Investigaciones Biológicas (IMIBIO-SL, CONICET); Chacabuco y Pedrenera (5700) San Luis Argentina
| | - Ricardo D. Enriz
- Departamento de Química, Facultad de Química, Bioquímica y Farmacia; Universidad Nacional de San Luis; Chacabuco 917, San Luis (5700) San Luis Argentina
- Instituto Multidiciplinario de Investigaciones Biológicas (IMIBIO-SL, CONICET); Chacabuco y Pedrenera (5700) San Luis Argentina
| | - Nélida M. Peruchena
- Lab. Estructura Molecular y Propiedades, Área de Química Física, Departamento de Química, Facultad de Ciencias Exactas y Naturales y Agrimensura; Universidad Nacional del Nordeste; Av. Libertad 5470 Corrientes 3400 Argentina
| |
Collapse
|
40
|
Cruickshank L, Kennedy AR, Shankland N. Tautomeric and ionisation forms of dopamine and tyramine in the solid state. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.08.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
41
|
Párraga J, Cabedo N, Andujar S, Piqueras L, Moreno L, Galán A, Angelina E, Enriz RD, Ivorra MD, Sanz MJ, Cortes D. 2,3,9- and 2,3,11-Trisubstituted tetrahydroprotoberberines as D2 dopaminergic ligands. Eur J Med Chem 2013; 68:150-66. [DOI: 10.1016/j.ejmech.2013.07.036] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 07/23/2013] [Accepted: 07/25/2013] [Indexed: 12/17/2022]
|
42
|
3,4-Dihydroxy- and 3,4-methylenedioxy- phenanthrene-type alkaloids with high selectivity for D2 dopamine receptor. Bioorg Med Chem Lett 2013; 23:4824-7. [DOI: 10.1016/j.bmcl.2013.06.078] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 06/24/2013] [Accepted: 06/27/2013] [Indexed: 01/11/2023]
|
43
|
Tosso RD, Andujar SA, Gutierrez L, Angelina E, Rodríguez R, Nogueras M, Baldoni H, Suvire FD, Cobo J, Enriz RD. Molecular modeling study of dihydrofolate reductase inhibitors. Molecular dynamics simulations, quantum mechanical calculations, and experimental corroboration. J Chem Inf Model 2013; 53:2018-32. [PMID: 23834278 DOI: 10.1021/ci400178h] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A molecular modeling study on dihydrofolate reductase (DHFR) inhibitors was carried out. By combining molecular dynamics simulations with semiempirical (PM6), ab initio, and density functional theory (DFT) calculations, a simple and generally applicable procedure to evaluate the binding energies of DHFR inhibitors interacting with the human enzyme is reported here, providing a clear picture of the binding interactions of these ligands from both structural and energetic viewpoints. A reduced model for the binding pocket was used. This approach allows us to perform more accurate quantum mechanical calculations as well as to obtain a detailed electronic analysis using the quantum theory of atoms in molecules (QTAIM) technique. Thus, molecular aspects of the binding interactions between inhibitors and the DHFR are discussed in detail. A significant correlation between binding energies obtained from DFT calculations and experimental IC₅₀ values was obtained, predicting with an acceptable qualitative accuracy the potential inhibitor effect of nonsynthesized compounds. Such correlation was experimentally corroborated synthesizing and testing two new inhibitors reported in this paper.
Collapse
Affiliation(s)
- Rodrigo D Tosso
- Departamento de Química, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco 917, 5700 San Luis, Argentina
| | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Feng Z, Hou T, Li Y. Selectivity and activation of dopamine D3R from molecular dynamics. J Mol Model 2012; 18:5051-63. [DOI: 10.1007/s00894-012-1509-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Accepted: 06/14/2012] [Indexed: 10/28/2022]
|