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1.
Arch Pharm (Weinheim) ; : e2300628, 2024 Mar 19.
Artículo en Inglés | MEDLINE | ID: mdl-38501879

RESUMEN

In diabetes mellitus, amylase and glucosidase enzymes are the primary triggers. The main function of these enzymes is to break macromolecules into simple sugar units, which directly affect blood sugar levels by increasing blood permeability. To overcome this metabolic effect, there is a need for a potent and effective inhibitor capable of suppressing the enzymatic conversion of sugar macromolecules into their smaller units. Herein, we reported the discovery of a series of substituted triazolo[4,3-b][1,2,4]triazine derivatives as α-glucosidase and α-amylase inhibitors. All target compounds demonstrated significant inhibitory activities against α-glucosidase and α-amylase enzymes compared with acarbose as the positive control. The most potent compound 10k, 2-[(6-phenyl-[1,2,4]triazolo[4,3-b][1,2,4]triazin-3-yl)thio]-N-[4-(trifluoromethyl)phenyl]acetamide, demonstrated IC50 values of 31.87 and 24.64 nM against α-glucosidase and α-amylase enzymes, respectively. To study their mechanism of action, kinetic studies were also done, which determined the mode of inhibition of both enzymes. Molecular docking was used to confirm the binding interactions of the most active compounds.

2.
Mol Divers ; 2024 Mar 11.
Artículo en Inglés | MEDLINE | ID: mdl-38466553

RESUMEN

Many human cancers have been associated with the deregulation of the mesenchymal-epithelial transition factor tyrosine kinase (MET) receptor, a promising drug target for anticancer drug discovery. Herein, we report the discovery of a novel structure of potent chalcone-based derivatives type II c-Met inhibitors which are comparable to Foretinib (IC50 = 14 nM) as a potent reference drug. Based on our design strategy, we also expected an anti-tubulin activity for the compounds. However, the weak inhibitory effects on microtubules were confirmed by cell cycle analyses implicated that the observed cytotoxicity against HeLa cells probably was not derived from tubulin inhibition. Compounds 14q and 14k with IC50 values of 24 nM and 45 nM, respectively, demonstrated favorable inhibition of MET kinase activity, and desirable bonding interactions in the ligand-MET enzyme complex stability in molecular docking studies.

3.
J Pharm Sci ; 2024 Feb 28.
Artículo en Inglés | MEDLINE | ID: mdl-38417791

RESUMEN

Amphiphilic peptides hold great potential as drug delivery systems. A popular peptide design approach has been to place amino acids in the peptide sequence based on their known properties. On the other hand, the directed discovery approach aims to screen a sequence space for a desired property. However, screening amphiphilic peptides for desirable drug delivery properties is not possible without a quantity that is predictive of these properties. We studied the predictive power of critical aggregation concentration (CAC) values on the drug delivery performance of a series of amphiphilic peptides with different hydrophobic tails and close CAC values. The CAC values were predicted by our previously developed model and doxorubicin was used as a model hydrophobic drug. All peptides showed close drug loading, entrapment efficiency, and release profile. They also formed similar spherical particles by assembling in reverse ß-sheet arrangements regardless of drug presence. Moreover, the assembled particles were able to accumulate doxorubicin inside ordinary as well as drug-resistant breast cancer cells and enhance its toxicity up to 39 and 17 folds, respectively. It can be concluded that similar drug delivery properties displayed by the peptides can be attributed to their similar hydrophilic-lipophilic balance as reflected in their close CAC values.

4.
Heliyon ; 9(12): e22749, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38094045

RESUMEN

Wounds represent a "silent epidemic" in the global population that impact significantly people's quality of life and the economy of societies. Owing to the numerous therapies, the pursuit of a perfect wound dressing with superior performance for treating all sorts of wounds is still underway. Several studies have shown the potential of integrating restorative peptides into the scaffolds as potential therapeutic candidates for wound healing. So far, there is little information about the wound-healing effect of S-acetamidomethyl Cys 20-31-EGF peptide, a main fragment of epidermal growth factor. In this regard, the effectiveness of this peptide in the alginate-gum arabic polysaccharide hydrogel was evaluated as a wound dressing (AG-P). Physicochemical evaluation of the hydrogels demonstrated that the incorporation of the peptide compressed the hydrogel network due to the presence of hydrogen and electrostatic bonds without significant effect on the mechanical, viscoelastic properties, swelling and degradation rate of the hydrogel. The hydrogel could continuously release the peptide and prevent rapid attenuation of its concentration. Cellular assessment of AG-P by scratch test and CFSE cytoplasmic dye/flow cytometry technique encouraged the migration and proliferation of human fibroblast cells, respectively. The effect of the AG-P on the expression of IL-6, TNF-α, NF-kB1 and VEGF genes indicated that this hydrogel reduced inflammation, and significantly increased angiogenesis compared to the control group based on the Real-time PCR results. In vitro assessment indicated that this structure can promote efficient and faster wound regeneration by altering the microenvironment of the wound. The hydrogel showed interesting features to be more equipped with other therapeutic agents making it as suitable dressing for various type of the wounds.

5.
Eur J Pharm Biopharm ; 192: 56-61, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37783361

RESUMEN

Due to the lack of pharmacopeia guidelines for injectable microspheres based on poly (D, L-lactide-co-glycolide) (PLGA), an internal method validation is a critical prerequisite for quality assurance. One of the essential issues of developing peptide-based drugs loaded PLGA microspheres is the precise determination of the amount of peptide drug entrapped in the microspheres. The aim of this study is the development and optimization of a method for measuring the drug content loading of PLGA microspheres using exenatide as a model peptide drug. Exenatide-loaded PLGA microspheres were prepared by a double emulsion solvent evaporation method. The extraction method to determine exenatide content in microspheres was optimized using Design of Experiments (DoE) approach. After the initial screening of six factors, using Fractional Factorial design (FFD), four of them, including type of organic solvent, buffer/organic solvent ratio (v/v), shaking time and pH, exhibited significant effects on the response, namely the exenatide loading, and a Box-Behnken design (BBD) was subsequently applied to obtain its optimum level. The optimum level for organic solvent volume, buffer/organic solvent ratio, shaking time, and pH were 4 ml, 1, 5.6 hrs, and pH 6, respectively. The exenatide content in microspheres under these conditions was 6.4 ± 0.0 (%w/w), whereas a value of 6.1% was predicted by the derived equation. This excellent agreement between the actual and the predicted value demonstrates that the fitted model can thus be used to determine the exenatide content.


Asunto(s)
Ácido Láctico , Ácido Poliglicólico , Exenatida , Copolímero de Ácido Poliláctico-Ácido Poliglicólico , Ácido Poliglicólico/química , Ácido Láctico/química , Poliglactina 910/química , Microesferas , Péptidos/química , Solventes , Tamaño de la Partícula
6.
Sci Rep ; 13(1): 15672, 2023 09 21.
Artículo en Inglés | MEDLINE | ID: mdl-37735489

RESUMEN

α-Glucosidase inhibition is an approved treatment for type 2 diabetes mellitus (T2DM). In an attempt to develop novel anti-α-glucosidase agents, two series of substituted imidazo[1,2-c]quinazolines, namely 6a-c and 11a-o, were synthesized using a simple, straightforward synthetic routes. These compounds were thoroughly characterized by IR, 1H and 13C NMR spectroscopy, as well as mass spectrometry and elemental analysis. Subsequently, the inhibitory activities of these compounds were evaluated against Saccharomyces cerevisiae α-glucosidase. In present study, acarbose was utilized as a positive control. These imidazoquinazolines exhibited excellent to great inhibitory potencies with IC50 values ranging from 12.44 ± 0.38 µM to 308.33 ± 0.06 µM, which were several times more potent than standard drug with IC50 value of 750.0 ± 1.5 µM. Representatively, compound 11j showed remarkable anti-α-glucosidase potency with IC50 = 12.44 ± 0.38 µM, which was 60.3 times more potent than positive control acarbose. To explore the potential inhibition mechanism, further evaluations including kinetic analysis, circular dichroism, fluorescence spectroscopy, and thermodynamic profile were carried out for the most potent compound 11j. Moreover, molecular docking studies and in silico ADME prediction for all imidazoquinazolines 6a-c and 11a-o were performed to reveal their important binding interactions, as well as their physicochemical and drug-likeness properties, respectively.


Asunto(s)
Diabetes Mellitus Tipo 2 , Inhibidores de Glicósido Hidrolasas , Humanos , Inhibidores de Glicósido Hidrolasas/farmacología , Acarbosa/farmacología , Quinazolinas/farmacología , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Cinética , Simulación del Acoplamiento Molecular , Saccharomyces cerevisiae , alfa-Glucosidasas
7.
Sci Rep ; 13(1): 14606, 2023 09 05.
Artículo en Inglés | MEDLINE | ID: mdl-37670132

RESUMEN

This study introduces a simple method for preparing a new generation of MnO2 nanomaterials (MNMs) using tannic acid as a template. Two shapes of MnO2 NMs, flower-like M1-MnO2 and near-spherical M2-MnO2, were prepared and compared as dual-active nanozymes and contrast agents in magnetic resonance imaging (MRI). Various parameters, including the crystallinity, morphology, magnetic saturation (Ms), surface functionality, surface area, and porosity of the MNMs were investigated. Flower-like M1-MnO2 NMs were biocompatible and exhibited pH-sensitive oxidase and peroxidase mimetic activity, more potent than near-spherical M2-MnO2. Furthermore, the signal intensity and r1 relaxivity strongly depended on the crystallinity, morphology, pore size, and specific surface area of the synthesized MNMs. Our findings suggest that flower-like M1-MnO2 NM with acceptable dual-enzyme mimetic (oxidase-like and peroxidase-like) and T1 MRI contrast activities could be employed as a promising theranostic system for future purposes.


Asunto(s)
Medios de Contraste , Nanoestructuras , Compuestos de Manganeso , Óxidos , Peroxidasa , Imagen por Resonancia Magnética , Peroxidasas
8.
Bioorg Chem ; 140: 106831, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37683538

RESUMEN

Considering the fundamental role of protein kinases in the mechanism of protein phosphorylation in critical cellular processes, their dysregulation, especially in cancers, has underscored their therapeutic relevance. Imidazopyridines represent versatile scaffolds found in abundant bioactive compounds. Given their structural features, imidazopyridines have possessed pivotal potency to interact with different protein kinases, inspiring researchers to carry out numerous structural variations. In this comprehensive review, we encompass an extensive survey of the design and biological evaluations of imidazopyridine-based small molecules as potential agents targeting diverse kinases for anticancer applications. We describe the structural elements critical to inhibitory potency, elucidating their key structure-activity relationships (SAR) and mode of actions, where available. We classify these compounds into two groups: Serine/threonine and Tyrosine inhibitors. By highlighting the promising role of imidazopyridines in kinase inhibition, we aim to facilitate the design and development of more effective, targeted compounds for cancer treatment.


Asunto(s)
Antineoplásicos , Antineoplásicos/farmacología , Antineoplásicos/uso terapéutico , Imidazoles/farmacología , Fosforilación , Piridinas/farmacología , Humanos
9.
Mol Divers ; 2023 Jul 08.
Artículo en Inglés | MEDLINE | ID: mdl-37420079

RESUMEN

Bacterial resistance to fluoroquinolone has been increasing at an alarming rate worldwide. In an attempt to find more potent anti-bacterial agents, an efficient, straightforward protocol was performed to obtain a large substrate scope of novel ciprofloxacin and sarafloxacin analogues conjugated with 4-(arylcarbamoyl)benzyl 7a-ab. All prepared compounds were evaluated for their anti-bacterial activities against three gram-positive strains (Methicillin resistant staphylococcus aureus (MRSA), Staphylococcus aureus, and Enterococcus faecalis) as well as three gram-negative strains (Pseudomonas aeruginosa, Klebsiella pneumonia, and Escherichia coli) through three standard methods including broth microdilution, agar-disc diffusion, and agar-well diffusion assays. Most of the compounds exhibited great to excellent anti-bacterial potencies against MRSA and S. aureus. Among the targeted compounds, derivative 7n exhibited great antibacterial potency, which was noticeably more potent than parent ciprofloxacin. Subsequently, a molecular docking study was performed for this compound to find out its probable binding mode with the active site of S. aureus DNA gyrase (PDB ID: 2XCT).

10.
BMC Chem ; 17(1): 66, 2023 Jun 26.
Artículo en Inglés | MEDLINE | ID: mdl-37365646

RESUMEN

In this work, a novel series of pyridazine-triazole hybrid molecules were prepared and evaluated as inhibitors of rat intestinal α-glucosidase enzyme. Amongst all newly synthesized compounds, 10k showed good inhibition in the series with IC50 value of 1.7 µM which is 100 folds stronger than positive control, acarbose. The cytotoxicity revealed that this compound is not toxic against normal cell line, HDF. The docking studies showed that triazole ring plays an important role in the binding interactions with the active site. The insertion of compound 10k into the active pocket of α-glucosidase and formation of hydrogen bonds with Leu677 was observed from docking studies. The kinetic studies revealed that this compound has uncompetitive mode of inhibition against α-glucosidase enzyme.

11.
Biochem Biophys Res Commun ; 655: 138-144, 2023 05 07.
Artículo en Inglés | MEDLINE | ID: mdl-36934589

RESUMEN

Drug resistance is one of the most important obstacles in effective cancer therapy triggered through various mechanisms. One of these mechanisms is caused by the upregulation of Inhibitor of Apoptosis Proteins (IAPs). IAPs, inhibit apoptosis through direct and/or indirect caspase inhibition, which themselves are antagonized by an endogenous protein called Second Mitochondrial-derived Activator of Caspases, Smac/Diablo, mediated by the presence of a tetrapeptide IAP binding motif at its N-terminus. Accordingly, Smac-based peptides are under intense investigation as anti-cancer drugs and have reached Phase 2 clinical trials, although, Smac based peptides or mimetics alone have not been effective as anti-cancer agents. On the other hand, KLA peptide has shown major toxicity against cancer cells through the induction of apoptosis. Consequently, we designed an anti-cancer chimera by fusing an octa-peptide from the N-terminus of mature Smac protein to a modified proapoptotic KLA peptide (KLAKLCKKLAKLCK) to be called Smac-KLA. This chimera, therefore, possesses both proapoptotic and anti-IAP activities. In addition, we dimerized this chimera via intermolecular disulfide bonds in order to enhance their cellular permeability. Both the Smac-KLA monomeric and dimeric peptides exhibited cytotoxic activity against both MCF-7 and MDA-MB231 breast cancer cell lines at low micromolar concentrations. Importantly, the dimerization of the chimeras enhanced their potency 2-4- fold due to higher cellular uptake.


Asunto(s)
Antineoplásicos , Neoplasias de la Mama , Femenino , Humanos , Antineoplásicos/farmacología , Apoptosis , Neoplasias de la Mama/tratamiento farmacológico , Caspasa 3/metabolismo , Caspasas/metabolismo , Proteínas Inhibidoras de la Apoptosis/metabolismo , Péptidos y Proteínas de Señalización Intracelular/farmacología , Células MCF-7 , Proteínas Mitocondriales/metabolismo , Péptidos/química
12.
Bioorg Chem ; 133: 106383, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36764231

RESUMEN

Tyrosine protein kinases (TKs) have been proved to play substantial roles on many cellular processes and their overexpression tend to be found in various types of cancers. Therefore, over recent decades, numerous tyrosine protein kinase inhibitors particularly epidermal growth factor receptor (EGFR) inhibitors have been introduced to treat cancer. Present study describes a novel series of imidazo[1,2-a]quinazolines 18 as potential -inhibitors. These imidazoquinazolines (18a and 18o, in particular) had great anti-proliferative activities with IC50 values in the micromolar (µM) range against PC3, HepG2, HeLa, and MDA-MB-231 comparing with Erlotinib as reference marketed drug. Further evaluations on some derivatives revealed their potential to induce apoptotic cell death and cell growth arrest at G0 phase of the cell cycle. Afterwards, the kinase assay on the most potent compounds 18a and 18o demonstrated their inhibitory potencies and selectivity toward EGFR (with EGFR-IC50 values of 82.0 µM and 12.3 µM, respectively). Additionally, western blot analysis on these compounds 18a and 18o exhibited that they inhibited the phosphorylation of EGFR and its downstream molecule extracellular signal-regulated kinase (ERK1/2). However, the level of B-Actin phosphorylation was not changed. Finally, density functional theory calculations, docking study, and independent gradient model (IGM) were performed to illustrate the structure-activity relationship (SAR) and to assess the interactions between proteins and ligands. The results of molecular docking studies had great agreement with the obtained EGFR inhibitory results through in vitro evaluations.


Asunto(s)
Antineoplásicos , Quinazolinas , Isótopos de Oxígeno/farmacología , Simulación del Acoplamiento Molecular , Quinazolinas/farmacología , Línea Celular Tumoral , Ensayos de Selección de Medicamentos Antitumorales , Receptores ErbB , Relación Estructura-Actividad , Proliferación Celular , Inhibidores de Proteínas Quinasas
13.
Arch Pharm (Weinheim) ; 356(3): e2200349, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36408898

RESUMEN

An important role has been considered for the vascular endothelial growth factor receptor 2 (VEGFR-2) in the angiogenesis process, so that its inhibition is an important scientific way for cancer treatment. In this work, new thienopyrimidine derivatives were synthesized and evaluated. Compared with sorafenib, the majority of the target compounds had antiproliferative activity against the PC3, HepG2, MCF7, SW480, and HUVEC cell lines, especially 9h with IC50 values of 4.5-15.1 µM, confirming the noticeable cytotoxic effects on the listed cell lines (PC3, HepG2, SW480, and HUVEC). Analyses by flow cytometry on SW480 and HUVEC cells revealed that 9n, 9k, 9h, and 9q led to apoptotic cell death. The result of the chick chorioallantoic membrane assay showed that 9h effectively reduced the number of corresponding blood vessels. Finally, the inhibitory effect on VEGFR-2 phosphorylation was considered as the outcome of Western blot analysis of compound 9h.


Asunto(s)
Antineoplásicos , Receptor 2 de Factores de Crecimiento Endotelial Vascular , Estructura Molecular , Relación Estructura-Actividad , Factor A de Crecimiento Endotelial Vascular/farmacología , Proliferación Celular , Ensayos de Selección de Medicamentos Antitumorales , Simulación del Acoplamiento Molecular , Inhibidores de Proteínas Quinasas/farmacología , Diseño de Fármacos
14.
ACS Omega ; 7(28): 24695-24704, 2022 Jul 19.
Artículo en Inglés | MEDLINE | ID: mdl-35874243

RESUMEN

Wound healing is one of the most complex biological processes. Studies show that Matrixyl (MTI), known as a cosmetic peptide, can lead to a faster healing process. The contribution of MTI to collagen formation during wound healing also depends on its mode of delivery and its release over time. Here, we investigate two modes of MTI-delivery system, the influence of MTI patch for wound healing application in comparison with MTI cream. In this study, animals were randomly divided into seven groups and studied for 21 days: patches containing two different concentrations of MTI (P-MTI-0.1 mg and P-MTI-1 mg), a cream containing MTI (C-MTI-1 mg), a patch (P-MTI-0), a cream with no MTI (C-MTI-0), a positive control (Comfeel), and a negative control (sham) group. To study the wound healing process, the change in collagen density, angiogenesis, epitheliogenesis, histopathology, immunohistochemical analysis, and wound area through imaging was monitored and measured. The macroscopic results showed that wound healing was improved from 63.5 up to 81.81% in treatment groups compared to that in the negative control group (P < 0.05 and P < 0.001). In addition, C-MTI-1 and P-MTI-1 had a larger impact on wound healing compared to that in the positive control group (Comfeel, P < 0.05). In hematoxylin and eosin (H&E) staining analysis, the rejuvenation of skin appendage was visible in both groups of cream and patches with MTI. According to the obtained results, the re-epithelialization had a higher range for the patch with MTI in comparison with cream containing MTI and positive control.

15.
Front Chem ; 10: 895483, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35844650

RESUMEN

In this research, a series of coumarin-based scaffolds linked to pyridine derivatives via a flexible aliphatic linkage were synthesized and assessed as multifunctional anti-AD agents. All the compounds showed acceptable acetylcholinesterase (AChE) inhibition activity in the nanomolar range (IC50 = 2-144 nM) and remarkable butyrylcholinesterase (BuChE) inhibition property (IC50 = 9-123 nM) compared to donepezil as the standard drug (IC50 = 14 and 275 nM, respectively). Compound 3f as the best AChE inhibitor (IC50 = 2 nM) showed acceptable BuChE inhibition activity (IC50 = 24 nM), 100 times more active than the standard drug. Compound 3f could also significantly protect PC12 and SH-SY5Y cells against H2O2-induced cell death and amyloid toxicity, respectively, superior to the standard drugs. It could interestingly reduce ß-amyloid self and AChE-induced aggregation, more potent than the standard drug. All the results suggest that compound 3f could be considered as a promising multi-target-directed ligand (MTDL) against AD.

16.
Carbohydr Polym ; 294: 119808, 2022 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-35868768

RESUMEN

Development of an ideal wound dressing with effective function for healing various types of wounds is the ultimate desire of the researchers. Natural-based compounds such as polysaccharides and phytochemicals offer useful properties making them perfect candidates for wound management. Polysaccharides-based hydrogels with an interconnected three-dimensional network, and desired properties have great potential as a carrier for delivery of different herbal extracts for oral and topical applications. Herbal extracts are extensively used for wound healing purposes, individually or in combination with other active agents. This study summarizes the current knowledge acquired on the preparation, functionalizing, and application of different kinds of polysaccharide-based hydrogels enriched by herbal extracts for different wound healing applications. The structural, biological, and functional impact of the polysaccharides and herbal extracts on the final hydrogel characteristics, as well as their influence on the different phases of the wound healing process have been discussed.


Asunto(s)
Hidrogeles , Cicatrización de Heridas , Vendajes , Hidrogeles/química , Extractos Vegetales/farmacología , Polisacáridos/química
17.
J Biochem Mol Toxicol ; 36(9): e23125, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-35702883

RESUMEN

Repaglinide (RPG) is an oral insulin secretagogue used in the treatment of diabetes. In this study, a new RPG analog was synthesized. Its antidiabetic and neuroprotective effects on dorsal root ganglions (DRG) in streptozotocin (STZ)-induced diabetic rats were examined compared to RPG. To assess the effects of 2-methoxy-4-(2-((3-methyl-1-(2-(piperidin-1-yl)phenyl)butyl)amino)-2-oxoethoxy)benzoic acid (OXR), the impact of OXR on oxidative stress biomarkers, motor function, and the expression of the glutamate dehydrogenase 1 (GLUD1), SLC2A2/glucose transporter 2 (GLUT2), and glucokinase (GCK) genes in STZ-induced diabetic rats were assessed. DRGs were examined histologically using hemotoxylin and eosin staining. Molecular docking was used to investigate the interactions between OXR and the binding site of RPG, the ATP-sensitive potassium (KATP) channel. Following 5 weeks of treatment, OXR significantly increased the level of total antioxidant power, decreased reactive oxygen species, and lipid peroxidation in the DRGs of diabetic rats. OXR restored STZ-induced pathophysiological damages in DRG tissues. Administration of OXR improved motor function of rats with diabetic neuropathy. Administration of 0.5 mg/kg OXR reduced blood glucose while promoting insulin, mainly through upregulation of messenger RNA expression of GLUD1, GLUT2, and GCK in the pancreas. Molecular docking revealed a favorable binding mode of OXR to the KATP channel. In conclusion, OXR has neuroprotective effects in diabetic rats by lowering oxidative stress, lowering blood glucose, and stimulating insulin secretion. We report that 0.5 mg/kg OXR administration was the most effective concentration of the compound in this study. OXR may be a promising target for further research on neuroprotective antidiabetic molecules.


Asunto(s)
Diabetes Mellitus Experimental , Fármacos Neuroprotectores , Adenosina Trifosfato/metabolismo , Animales , Antioxidantes/metabolismo , Antioxidantes/farmacología , Ácido Benzoico/farmacología , Biomarcadores/metabolismo , Glucemia/metabolismo , Carbamatos , Diabetes Mellitus Experimental/metabolismo , Eosina Amarillenta-(YS)/farmacología , Glucoquinasa/metabolismo , Proteínas Facilitadoras del Transporte de la Glucosa/metabolismo , Proteínas Facilitadoras del Transporte de la Glucosa/farmacología , Glutamato Deshidrogenasa/metabolismo , Glutamato Deshidrogenasa/farmacología , Hematoxilina/farmacología , Hipoglucemiantes/farmacología , Hipoglucemiantes/uso terapéutico , Insulina , Canales KATP/metabolismo , Simulación del Acoplamiento Molecular , Fármacos Neuroprotectores/farmacología , Fármacos Neuroprotectores/uso terapéutico , Estrés Oxidativo , Piperidinas , Potasio/metabolismo , Potasio/farmacología , ARN Mensajero/metabolismo , Ratas , Especies Reactivas de Oxígeno/metabolismo , Secretagogos/farmacología
18.
Sci Rep ; 12(1): 9683, 2022 06 11.
Artículo en Inglés | MEDLINE | ID: mdl-35690595

RESUMEN

The novel derivatives of tetrahydropyridothienopyrimidine-based compounds have been designed and efficiently synthesized with good yields through seven steps reaction. The anticancer activity of compounds 11a-y has been evaluated against MCF-7, PC-3, HEPG-2, SW-480, and HUVEC cell lines by MTT assay. The target compounds showed IC50 values between 2.81-29.6 µg/mL and were compared with sorafenib as a reference drug. Among them, compound 11n showed high cytotoxic activity against four out of five examined cell lines and was 14 times more selective against MRC5. The flow cytometric analysis confirmed the induction of apoptotic cell death by this compound against HUVEC and MCF-7 cells. In addition, 11n caused sub-G1 phase arrest in the cell cycle arrest. Besides, this compound induced anti-angiogenesis in CAM assay and increased the level of caspase-3 by 5.2 fold. The western-blot analysis of the most active compound, 11n, revealed the inhibition of VEGFR-2 phosphorylation. Molecular docking study also showed the important interactions for compound 11n.


Asunto(s)
Antineoplásicos , Urea , Inhibidores de la Angiogénesis/farmacología , Antineoplásicos/farmacología , Apoptosis , Proliferación Celular , Diseño de Fármacos , Ensayos de Selección de Medicamentos Antitumorales , Humanos , Simulación del Acoplamiento Molecular , Estructura Molecular , Relación Estructura-Actividad , Urea/farmacología , Receptor 2 de Factores de Crecimiento Endotelial Vascular/metabolismo
19.
Mini Rev Med Chem ; 22(2): 273-311, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-33687881

RESUMEN

Due to the high mortality rate of the 2019 coronavirus disease (COVID-19) pandemic, there is an immediate need to discover drugs that can help before a vaccine becomes available. Given that the process of producing new drugs is so long, the strategy of repurposing existing drugs is one of the promising options for the urgent treatment of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes COVID-19 disease. Although FDA has approved Remdesivir for the use in hospitalized adults and pediatric patients suffering from COVID-19, no fully effective and reliable drug has been yet identified worldwide to treat COVID-19 specifically. Thus, scientists are still trying to find antivirals specific to COVID-19. This work reviews the chemical structure, metabolic pathway, and mechanism of action of the existing drugs with potential therapeutic applications for COVID-19. Furthermore, we summarized the molecular docking stimulation of the medications related to key protein targets. These already established drugs could be further developed, and after their testing through clinical trials, they could be used as suitable therapeutic options for patients suffering from COVID-19.


Asunto(s)
Antivirales/farmacología , Tratamiento Farmacológico de COVID-19 , COVID-19/virología , Redes y Vías Metabólicas/efectos de los fármacos , SARS-CoV-2/efectos de los fármacos , SARS-CoV-2/metabolismo , Antivirales/uso terapéutico , Humanos , Simulación del Acoplamiento Molecular , SARS-CoV-2/crecimiento & desarrollo , SARS-CoV-2/patogenicidad
20.
ACS Omega ; 6(38): 24981-25001, 2021 Sep 28.
Artículo en Inglés | MEDLINE | ID: mdl-34604679

RESUMEN

Demand has arisen for developing new azole antifungal agents with the growth of the resistant rate of infective fungal species to current azole antifungals in recent years. Accordingly, the present study reports the synthesis of novel fluconazole (FLC) analogues bearing urea functionality that led to discovering new azole agents with promising antifungal activities. In particular, compounds 8b and 8c displayed broad-spectrum activity and superior in vitro antifungal capabilities compared to the standard drug FLC against sensitive and resistant Candida albicans (C. albicans). The highly active compounds 8b and 8c had potent antibiofilm properties against FLC-resistant C. albicans species. Additionally, these compounds exhibited very low toxicity for three mammalian cell lines and human red blood cells. Time-kill studies revealed that our synthesized compounds displayed a fungicidal mechanism toward fungal growth. Furthermore, a density functional theory (DFT) calculation, additional docking, and independent gradient model (IGM) studies were performed to analyze their structure-activity relationship (SAR) and to assess the molecular interactions in the related target protein. Finally, in vivo results represented a significant reduction in the tissue fungal burden and improvements in the survival rate in a mice model of systemic candidiasis along with in vitro and in silico studies, demonstrating the therapeutic efficiency of compounds 8b and 8c as novel leads for candidiasis drug discovery.

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