Evaluation of the pharmacological potential of N-((5-phenyl-6,11-dihydro-[1,2,4]triazolo[1’,5’:1,6]pyrido[3,4-b]indol-2-yl)methyl)benzamides

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The rational design of new biologically active compounds is based on the use of effective structural fragments, capable of ensuring high biosimilarity, favorable pharmacokinetic properties and an appropriate safety profile. Among them, 1,2,4-triazole and indole cores occupy a special place, being widely represented in pharmacologically active molecules due to their ability to participate in various types of molecular interactions. The combination of 1,2,4-triazole and indole fragments within a single molecule promotes the creation of conjugated systems with potentially multifunctional activity, thereby expanding the opportunities for the discovery of new therapeutic agents. Early-stage computer-based prediction of toxicological and pharmacokinetic properties remains a key strategy for optimizing the screening process. The application of in silico methods allows timely assessment of the safety, ADME profile and biological potential of compounds prior to experimental investigations. Aim. This study aimed to perform an in silico assessment of the toxicological properties, ADME parameters, and molecular docking profiles of newly designed compounds belonging to the N-((5-phenyl-6,11-dihydro-[1,2,4]triazolo-[1’,5’:1,6]pyrido[3,4-b]indol-2-yl)methyl)benzamide series, in order to substantiate their synthesis and guide further experimental validation. Materials and methods. Molecular structure design for in silico studies was guided by a critical analysis of the scientific literature and fundamental principles of organic chemistry, allowing the rational incorporation of established pharmacophoric elements into compact molecular frameworks. Safety profiles and potential toxicological risks were predicted using the TEST (Toxicity Estimation Software Tool) platform. Physicochemical properties and pharmacokinetic behaviors were evaluated through the SwissADME online resource. Advanced molecular docking techniques were employed to identify potential binding sites with model enzymes and to characterize the energetic and spatial features of ligand-target interactions. Ligand structures were generated using MarvinSketch 6.3.0, HyperChem 8, and AutoDock Tools 1.5.6, while protein targets were prepared with Discovery Studio 4.0 and AutoDock Tools 1.5.6. Docking simulations were conducted with AutoDock Vina, enabling accurate modeling of ligand-protein binding based on energetic and steric complementarity. This integrative in silico approach facilitated the early-stage evaluation of biological potential and safety profiles prior to experimental validation. Results. The investigated N-((5-phenyl-6,11-dihydro-[1,2,4]triazolo-[1’,5’:1,6]pyrido[3,4-b]indol-2-yl)methyl)benzamide derivatives exhibited statistically significant moderate to low toxicity towards aquatic organisms (Daphnia magna, Pimephales promelas) and lacked mutagenic potential. The predicted oral toxicity values (LD50) in rats ranged from 470 mg/kg to 990 mg/kg, indicating a relatively safe profile for the compounds. Pharmacokinetic analysis revealed high aromaticity, a low degree of carbon bond saturation, and variable water solubility among the studied compounds. The most favorable properties were observed for 2-bromo-4-fluoro-N-((5-phenyl-6,11-dihydro-[1,2,4]triazolo[1’,5’:1,6]pyrido[3,4-b]-indol-2-yl)methyl)benzamide, 2-bromo-N-((5-phenyl-6,11-dihydro-[1,2,4]triazolo-[1’,5’:1,6]pyrido[3,4-b]indol-2-yl)methyl)benzamide, 4-fluoro-N-((5-phenyl-6,11-dihydro-[1,2,4]triazolo[1’,5’:1,6]pyrido[3,4-b]indol-2-yl)methyl)benzamide and N-((5-phenyl-6,11-dihydro-[1,2,4]triazolo[1’,5’:1,6]pyrido[3,4-b]indol-2-yl)methyl)-thiophene-2-carboxamide. These compounds were identified as the most promising candidates for further synthesis and biological evaluation. Conclusions. Computer modeling demonstrated that a series of designed N-((5-phenyl-6,11-dihydro-[1,2,4]triazolo[1’,5’:1,6]pyrido[3,4-b]indol-2-yl)methyl)-benzamide derivatives is characterized by a relatively safe toxicological profile, absence of mutagenic potential and favorable pharmacokinetic properties. Based on comprehensive in silico evaluation, four compounds exhibiting the most promising characteristics in terms of safety and potential bioactivity are recommended for further experimental studies.

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  • Jun 20, 2025
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Obesity has emerged as a major health issue worldwide. Current research mainly focuses on how small bioactive compounds can influence the mechanism of transcription regulatory factors involved in the fat accumulation and weight gain process. Lagerstroemia speciosa plant is commonly used in traditional systems of medicine to combat obesity and diabetes. It contains major bioactive compounds, viz. pregnenolone, corosolic acid, fenretidinide, norlargerenol acetate, maslinic acid, olenoic acid and beta-sistosterol. The present study was undertaken to elucidate the role of L. speciosa bioactive compounds in obesity control by targeting FABP-4/ap-2, C/EBP-α, and PPAR-γ transcription factors that play a significant role in adipocyte biology and metabolism. The present study screened twenty-nine bioactive compounds against three targets using Autodock Vina, Autodock Tools. Discovery Studio was utilized to visualize the targeted proteins' ligand and amino acid interaction. In silico approach showed that screened bioactive compounds downregulate the expression of targeted transcriptional regulatory genes involved in the adipocyte differentiation mechanism. Pregnenolone, a major bioactive compound, scored binding free energy of -6.34, -7.58, and -6.22 kcal/mol with C/EBP-α, PPAR-γ, and FABP-4, respectively, compared to standard drug. Findings showed that these bioactive compounds play a crucial role in regulating adipogenesis and differentiation genes, proving their therapeutic importance as antiobesity agent. Although these findings are encouraging, extensive in vivo studies are essential to confirm efficacy, ensure safety, and investigate the therapeutic potential of these compounds for obesity treatment.

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  • MGM Journal of Medical Sciences
  • Shreya Medhi + 2 more

Introduction: Conventional methods of drug discovery have somehow proved to be ineffective in terms of lengthy design, limited efficacy amongst multiple other reasons. Considering that “time” is an important factor in the process of drug discovery, it becomes necessary to look for newer methods. Drug repurposing can be considered as a suitable option in such scenarios; to treat cancer or diseases with rapid pathogenesis. Amongst the various types of cancer, breast cancer and more precisely triple-negative breast cancer (TNBC) has become a prevalent form. Objectives: To overcome the challenges of conventional methods, several bioinformatic tools may be used, particularly those involved in molecular docking (CASTp, Discovery Studio, AutoDock Tools, etc.). Materials and Methods: Thiocolchicoside is a semisynthetic drug that was traditionally used as an anti-inflammatory and analgesic. In this article, we repurpose thiocolchicoside to act mainly on the NF-kB pathway. RANK and RANKL are frequently detected in the oncogenic process and together they participate in cancer development through TRAF6 activating the NF-kB pathway. Molecular docking of thiocolchicoside against TRAF6-RANK can exhibit the potency of this drug against breast cancer. Results: It was observed that cell viability was decreased when different drug concentrations were used against TNBS cell lines in vitro as compared with the control sample. The cell viability observed was 100% in the control sample, 95.93% in 15.625 µM drug concentration, 62.33% in 31.25 µM, 55.56% in 62.5 µM, 53.66% in 125 µM, 44.17% in 250 µM, and 39.84% in 500 µM. Conclusion: Repurposing a drug with the help of molecular docking is an effective method of drug development that reduces the time and cost factor due to its already known safety. Molecular docking of thiocolchicoside against TRAF6-RANK exhibits its inhibitory effect, and it can be effectively used as an anticancer drug.

  • Research Article
  • 10.4103/epj.epj_199_24
Metabolomic profiling and molecular docking study of mucus from the Indonesian land snail Hemiplecta humphreysiana Lea, 1840 (Gastropoda) to unveil its potential as an anti-tyrosinase and an anti-elastase agent
  • Dec 17, 2024
  • Egyptian Pharmaceutical Journal
  • Ukhradiya M S Purwanto + 6 more

Background Mucus from several species of snails has been known to contain bioactive compounds such as anti-tyrosinase and anti-elastase. These two compounds contribute as whitening agents and anti-wrinkle agents, respectively. Among the many land snail species in Indonesia, only one species, Lissachatina fulica, has been analyzed for its bioactive compound. This species is an invasive alien species and non-native to Indonesia. In this study, we aim to unravel the bioactive compounds in one Indonesian native species, Hemiplecta humphreysiana. Objective To identify bioactive compounds in the mucus of H. humphreysiana using ultra-performance liquid chromatography-mass spectrometry/mass spectrometry quadrupole time-of-flight (UPLC-MS/MS QTOF) and to evaluate their potential as anti-tyrosinase and anti-elastase agents using molecular docking. Materials and methods Carbonate buffer at pH 9.4 was used to extract mucus from H. humphreysiana snails. Lyophilized mucus samples were dissolved in methanol and dichloromethane solvents, filtered, and injected into a UPLC-MS/MS instrument. The data analysis was conducted using MassLynx software. The molecular formulas and spectra were compared with databases such as ChemSpider, PubChem, MassBank, Human Metabolome Database, and the National Institute of Standards and Technology to obtain the metabolomic profile of the sample. Bioactive metabolites were evaluated for ligand–protein interactions using a molecular docking approach with AutoDock tools and AutoDock Vina. Results were visualized in two-dimensional and three-dimensional using Discovery Studio and analyzed for bond affinity energy. Scoring was conducted to identify potential inhibitors of tyrosinase or elastase. Results and conclusion A total of bioactive compounds were identified from the mucus of H. humphreysiana Lea, 1840. Twenty compounds were identified as suspected compounds, and 13 were confirmed. Based on the bioavailability and toxicity characteristics, analysis of affinity energy, and ligand–receptor interaction, about 13 compounds can inhibit tyrosinase, and 12 compounds can inhibit elastase. Indoleacrylic acid and withanone were determined to be lead compounds with anti-tyrosinase activity, while withanone and 7-[2-(1-adamantyl)-2-oxoethyl]-1,3-dimethyl-8-(4-methylpiperazin-1-yl) purine-2,6-dione were identified as lead compounds as anti-elastase agents. Metabolomic profiling using UPLC-MS/MS QTOF can identify bioactive compounds for use as test ligands in molecular docking. The presence of lead compounds in H. humphreysiana mucus to inhibit tyrosinase and elastase shows its potential as a whitening and anti-wrinkle agent, respectively. This study initiates the bioprospecting of H. humphreysiana mucus as nutricosmeceuticals for future research.

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