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Tran TH, Mai TT, Ho TTT, Le TND, Cao TCN, Thai KM, Tran TS. Inhibition of Pancreatic Lipase by Flavonoid Derivatives: In Vitro and In Silico Investigations. Adv Pharmacol Pharm Sci 2024; 2024:6655996. [PMID: 38298460 PMCID: PMC10830309 DOI: 10.1155/2024/6655996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 12/29/2023] [Accepted: 01/17/2024] [Indexed: 02/02/2024] Open
Abstract
Obesity, characterized by excessive adipose tissue accumulation, has emerged as a crucial determinant for a wide range of chronic medical conditions. The identification of effective interventions for obesity is of utmost importance. Widely researched antiobesity agents focus on pancreatic lipase, a significant therapeutic target. This study presented the evaluation of ten flavonoid compounds in terms of their inhibitory activities against pancreatic lipase, utilizing both in vitro and in silico approaches. The results indicated that all tested compounds demonstrated modest and weaker inhibitory activities compared to the reference compound, orlistat. Among the compounds investigated, F01 exhibited the highest potency, with an IC50 value of 17.68 ± 1.43 µM. The enzymatic inhibition kinetic analysis revealed that F01 operated through a competitive inhibition mechanism with a determined Ki of 7.16 μM. This value suggested a moderate binding affinity for the pancreatic lipase enzyme. Furthermore, the associated Vmax value was quantified at 0.03272 ΔA·min-1. In silico studies revealed that F01 displayed a binding mode similar to that of orlistat, despite lacking an active functional group capable of forming a covalent bond with Ser152 of the catalytic triad. However, F01 formed a hydrogen bond with this crucial amino acid. Furthermore, F01 interacted with other significant residues at the enzyme's active site, particularly those within the lid domain. Based on these findings, F01 demonstrates substantial potential as a candidate for further investigations.
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Affiliation(s)
- The-Huan Tran
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 530000, Vietnam
| | - Thanh-Tan Mai
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh 700000, Vietnam
| | - Thi-Thu-Trang Ho
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 530000, Vietnam
| | | | - Thi-Cam-Nhung Cao
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 530000, Vietnam
| | - Khac-Minh Thai
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh 700000, Vietnam
| | - Thai-Son Tran
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 530000, Vietnam
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Yadav M, Singh VP. Glutathione Peroxidase-like Antioxidant Activity of 1,3-Benzoselenazoles: Synthesis and In Silico Molecular Docking Studies as Pancreatic Lipase Inhibitors. J Org Chem 2023; 88:16934-16948. [PMID: 38008916 DOI: 10.1021/acs.joc.3c01762] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
The synthesis of 1,3-benzoselenazoles was achieved by the reaction of corresponding bis[3-amino-N-(p-tolyl)benzamide-2-yl] diselenide, bis[3-amino-N-(4-methoxyphenyl)benzamide-2-yl] diselenide, and bis[3-amino-N-(4-(dimethylamino)phenyl) benzamide-2-yl] diselenide with aryl aldehydes. The 1,3-benzoselenazoles continued to exist as planar molecules due to the presence of secondary Se···O interactions as revealed by the single-crystal X-ray analysis. The presence of secondary Se···O interactions in 1,3-benzoselenazoles was confirmed using natural bond orbital (NBO) and atoms in molecules (AIM) calculations. Nucleus-independent chemical shift (NICS) values suggested the presence of aromatic character in a five-membered benzoselenazole heterocyclic ring. The glutathione peroxidase (GPx)-like antioxidant activity of all 1,3-benzoselenazoles was assessed using a thiophenol assay, exhibiting greater antioxidant activity than Ph2Se2 used as a reference. The most active catalyst carrying a strong electron-donating group (-NMe2) at the ortho-position to the benzoselenazole ring was further investigated at different concentrations of thiophenol, H2O2, and 1,3-benzoselenazoles as catalyst for determining their catalytic parameters. Moreover, the potential applications of all 1,3-benzoselenazoles against pancreatic lipase (PL) have been identified using in silico interactions between the active sites of the 1LPB protein as evaluated using a molecular docking study.
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Affiliation(s)
- Manisha Yadav
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Vijay P Singh
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
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Choudhari S, Patil SK, Rathod S. Identification of hits as anti-obesity agents against human pancreatic lipase via docking, drug-likeness, in-silico ADME(T), pharmacophore, DFT, molecular dynamics, and MM/PB(GB)SA analysis. J Biomol Struct Dyn 2023:1-23. [PMID: 37735906 DOI: 10.1080/07391102.2023.2258407] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 09/07/2023] [Indexed: 09/23/2023]
Abstract
Obesity, characterized by excessive fat accumulation, is a major health concern. Inhibition of human pancreatic lipase, an enzyme involved in fat digestion, offers a potential strategy for weight loss and obesity treatment. This study aimed to identify polyphenols capable of forming stable complexes with human pancreatic lipase to block its activity. Molecular docking, density functional theory (DFT), molecular dynamics (MD) simulations, and MMPBGBSA calculations were employed to evaluate ligand binding, stability, and energy profiles. Pharmacophore modeling was also performed to identify key structural features for effective inhibition. Virtual screening identified ZINC000015120539, ZINC000000899200, ZINC000001531702, and ZINC000013340267 as potential candidates, exhibiting favorable binding and stable interactions over 100 ns MD simulations. These findings provide insights into the inhibitory potential of selected polyphenols on human pancreatic lipase and support further experimental investigations for obesity treatment.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sujata Choudhari
- Department of Pharmaceutical Chemistry, Sarojini College of Pharmacy, Kolhapur, MS, India
- Department of Pharmaceutics, Ashokrao Mane College of Pharmacy, Peth Vadgaon, MS, India
| | - Sachin Kumar Patil
- Department of Pharmaceutics, Ashokrao Mane College of Pharmacy, Peth Vadgaon, MS, India
| | - Sanket Rathod
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth College of Pharmacy, Kolhapur, MS, India
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Paul AT, George G, Auti PS, Sengupta P. Design and Synthesis of Echitamine-inspired Hybrid Analogues Containing
Thiazolidinediones as Potential Pancreatic Lipase Inhibitors. LETT DRUG DES DISCOV 2022. [DOI: 10.2174/1570180819666220314094820] [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:
Obesity is a multifactorial metabolic disease characterised by excessive accumulation
of triglycerides. The prevalence and morbidity rates associated with obesity are increasing tremendously,
posing a significant risk to society. Pancreatic lipase (PL) is a key enzyme responsible for the
digestion of dietary triglycerides; hence its inhibition is considered an attractive target in obesity.
Methods:
In this present work, a new series of echitamine-inspired indole-based thiazolidinedione hybrid
analogues were designed, synthesized, and evaluated for their in vitro PL inhibitory potential. The nature
of inhibition has been identified by enzyme kinetic analysis, whereas in silico molecular modelling tools
(molecular docking and dynamic studies) were used for the identification of the mode of action at the
catalytic site of PL (PDB ID: 1LPB). Fluorescence quenching was used for the identification of the interaction
between the potent analogues with PL.
Results:
The condensation reaction of substituted indole derivatives with TZD in the presence of aqueous
KOH resulted in the formation of the titled analogues. Analogues 7k and 7p displayed a potential PL inhibitory
activity (IC50 = 11.36 and 11.87 μM, respectively). A competitive mode of PL inhibition was
revealed in the enzyme kinetic analysis. A static quenching mechanism was exhibited by the screened
agents on PL. The obtained MolDock scores were aligned with the in vitro PL inhibitory activity (Pearson’s
r - 0.7575, p<0.05). Moreover, the PL-ligand complexes were stable in the dynamic conditions.
Conclusion:
Analogue 7k exerted the potential activity, and further studies might result in novel lead
molecules.
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Affiliation(s)
- Atish T. Paul
- Laboratory of Natural Product Chemistry, Department of Pharmacy, Birla Institute of Technology and Science, (BITS
Pilani), Pilani Campus, Pilani 333 031, Rajasthan, India
| | - Ginson George
- Laboratory of Natural Product Chemistry, Department of Pharmacy, Birla Institute of Technology and Science, (BITS
Pilani), Pilani Campus, Pilani 333 031, Rajasthan, India
| | - Prashant S. Auti
- Laboratory of Natural Product Chemistry, Department of Pharmacy, Birla Institute of Technology and Science, (BITS
Pilani), Pilani Campus, Pilani 333 031, Rajasthan, India
| | - Pracheta Sengupta
- Laboratory of Natural Product Chemistry, Department of Pharmacy, Birla Institute of Technology and Science, (BITS
Pilani), Pilani Campus, Pilani 333 031, Rajasthan, India
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Arshad U, Ahmed S, Shafiq N, Ahmad Z, Hassan A, Akhtar N, Parveen S, Mehmood T. Structure-Based Designing, Solvent Less Synthesis of 1,2,3,4-Tetrahydropyrimidine-5-carboxylate Derivatives: A Combined In Vitro and In Silico Screening Approach. Molecules 2021; 26:molecules26154424. [PMID: 34361577 PMCID: PMC8348070 DOI: 10.3390/molecules26154424] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/02/2021] [Accepted: 07/18/2021] [Indexed: 11/16/2022] Open
Abstract
Objective: In this study, small molecules possessing tetrahydropyrimidine derivatives have been synthesized having halogenated benzyl derivatives and carboxylate linkage. As previously reported, FDA approved halogenated pyrimidine derivatives prompted us to synthesize novel compounds in order to evaluate their biological potential. Methodology: Eight pyrimidine derivatives have been synthesized from ethyl acetoacetate, secondary amine, aromatic benzaldehyde by adding catalytic amount of CuCl2·2H2O via solvent less Grindstone multicomponent reagent method. Molecular structure reactivity and virtual screening were performed to check their biological efficacy as an anti-oxidant, anti-cancer and anti-diabetic agent. These studies were supported by in vitro analysis and QSAR studies. Results: After combined experimental and virtual screening 5c, 5g and 5e could serve as lead compounds, having low IC50 and high binding affinity.
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Affiliation(s)
- Uzma Arshad
- Department of Chemistry, Government College Women University Faisalabad, Faisalabad 38000, Pakistan; (U.A.); (A.H.); (S.P.)
| | - Sibtain Ahmed
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093, USA
- Correspondence: (S.A.); or (N.S.)
| | - Nusrat Shafiq
- Department of Chemistry, Government College Women University Faisalabad, Faisalabad 38000, Pakistan; (U.A.); (A.H.); (S.P.)
- Correspondence: (S.A.); or (N.S.)
| | - Zaheer Ahmad
- Department of Chemistry, University of Wah, Rawalpindi 47000, Pakistan;
| | - Aqsa Hassan
- Department of Chemistry, Government College Women University Faisalabad, Faisalabad 38000, Pakistan; (U.A.); (A.H.); (S.P.)
| | - Naseem Akhtar
- Department of Chemistry, Government Sadiq College Women University, Bahawalpur 63000, Pakistan;
| | - Shagufta Parveen
- Department of Chemistry, Government College Women University Faisalabad, Faisalabad 38000, Pakistan; (U.A.); (A.H.); (S.P.)
| | - Tahir Mehmood
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan;
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S N C S, Sengupta P, Palawat S, P S D, George G, Paul AT. Synthesis, molecular modelling, in vitro and in vivo evaluation of conophylline inspired novel benzyloxy substituted indole glyoxylamides as potent pancreatic lipase inhibitors. J Biomol Struct Dyn 2021; 40:9530-9542. [PMID: 34032197 DOI: 10.1080/07391102.2021.1930168] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Pancreatic lipase is a digestive enzyme involved in the hydrolysis of dietary fats. Orlistat, a potent pancreatic lipase inhibitor, is widely prescribed for long-term obesity treatment. Nevertheless, orlistat is reported for severe adverse effects including hepatotoxicity and pancreatitis. In the present study, a novel series of 11 benzyloxy substituted indole glyoxylamides were designed, synthesized and evaluated for in vitro pancreatic lipase inhibitory activity. Three analogues, 10b, 11b and 11c, exhibited potent activity (IC50 ≤ 2.5 µM), with 11b exhibiting a potent IC50 of 1.68 µM comparable to orlistat (IC50 = 0.99 µM). Further, 11b exhibited reversible competitive inhibition with an inhibitory constant value of 0.98 μM. Molecular docking of these analogues was in agreement with in vitro results, wherein the MolDock scores exhibited significant correlation with their inhibitory activity (Pearson's r = 0.7122). A 50 ns molecular dynamics simulation of 11b-pancreatic lipase complex confirmed the role of extended alkyl interactions along with π-π stacking and π-cation interactions, in stabilizing the ligand (Maximum RMSD ≈ 3 Å) in the active site. Gastro-intestinal absorption and toxicity prediction of the three potent analogues highlighted the suitability of 11b for in vivo experiments. 11b at a dose of 20 mg/kg exhibited anti-obesity efficacy comparable to orlistat (10 mg/kg), wherein the serum triglycerides were found to be 94.95 and 83.85 mg/dL, respectively. Further, faecal triglyceride quantification indicated 11b to act through pancreatic lipase inhibition similar to orlistat. The present study identified a novel pancreatic lipase inhibitory benzyloxy substituted bis(indolyl) glyoxylamide 11b, with promising anti-obesity activity.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sridhar S N C
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Pilani, Rajasthan, India
| | - Pracheta Sengupta
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Pilani, Rajasthan, India
| | - Saksham Palawat
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Pilani, Rajasthan, India
| | - Dileep P S
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Pilani, Rajasthan, India
| | - Ginson George
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Pilani, Rajasthan, India
| | - Atish T Paul
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Pilani, Rajasthan, India
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George G, Auti PS, Paul AT. Design, synthesis and biological evaluation of N-substituted indole-thiazolidinedione analogues as potential pancreatic lipase inhibitors. Chem Biol Drug Des 2021; 98:49-59. [PMID: 33864339 DOI: 10.1111/cbdd.13846] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/20/2021] [Accepted: 04/05/2021] [Indexed: 12/23/2022]
Abstract
Pancreatic Lipase (PL) is a key enzyme responsible for the digestion of 50%-70% of dietary triglycerides, hence its inhibition is considered as a viable approach for the management of obesity. A series of indole-TZD hybrid analogues were synthesized, characterized and evaluated for their PL inhibitory activity. Knoevenagel condensation of various substituted indole-3-carboxaldehyde with substituted thiazolidinediones resulted in the formation of titled analogues. Analogues 6d and 6e exerted potent PL inhibitory activity (IC50 -6.19 and 8.96 µM, respectively). Further, these analogues exerted a competitive mode of PL inhibition. Moreover, molecular modelling studies were in agreement with the in vitro results (Pearson's r = .8682, p < .05). The fluorescence spectroscopic analysis further supported the strong binding affinity of these analogues with PL. A molecular dynamics study (20 ns) indicated that these analogues were stable in a dynamic environment. Thus, the present study highlighted the potential role of indole-thiazolidinedione hybrid analogues as potential PL inhibitors and further optimization might result in the development of new PL inhibitory lead candidates.
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Affiliation(s)
- Ginson George
- Laboratory of Natural Product Chemistry, Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Pilani Campus, India
| | - Prashant S Auti
- Laboratory of Natural Product Chemistry, Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Pilani Campus, India
| | - Atish T Paul
- Laboratory of Natural Product Chemistry, Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Pilani Campus, India
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