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Wang R, Huang Q, Zhu S, Xie C, Zeng Q, Yuan Y. The zinc absorption of the novel peptide-Zn complex in Caco-2 cells: effects of soybean peptides charge and hydrophobicity. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024. [PMID: 39011979 DOI: 10.1002/jsfa.13744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 06/04/2024] [Accepted: 07/01/2024] [Indexed: 07/17/2024]
Abstract
BACKGROUND The supplemental effect of zinc depends not only on adequate intake, but also on how efficiently it is absorbed in the small intestine. In the present study, weak hydrophobic peptides (WHP), strong hydrophobic peptides (SHP), positively charged peptides (PCP) and negatively charged peptides (NCP) were isolated from soybean peptides (SP). The peptide-Zn complexes (PCP-Zn, NCP-Zn, WHP-Zn, SHP-Zn and SP-Zn) were prepared to compare their promotion zinc absorption capacity in the Caco-2 cells monolayers model. RESULTS We found that the carboxyl, carbonyl and amino groups in peptide were the primary binding sites of Zn. Compared with zinc sulfate, the peptide-Zn complexes with different charge and hydrophobic peptides could improve zinc solubility at different pH. NCP-Zn had a lower Zn-binding capacity but a higher zinc absorption capacity compared to that of PCP-Zn in Caco-2 cells. In addition, the capacity of PCP-Zn to promote zinc absorption was lower than the control group (SP-Zn). There were no significant differences in transport rates, retention rates and uptake rates of WHP-Zn, SHP-Zn and SP-Zn. NCP-Zn could improve the activity of Zn-related enzymes, and the expression levels of PepT1 and ZnT1 were higher than other peptide-Zn complexes. CONCLUSION The promotion zinc absorption capacity of peptide-Zn complexes was not completely dependent on the Zn-binding capacity, but also depended on the charge and hydrophobicity of peptides. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Rongxin Wang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China
| | - Qing Huang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China
| | - Suyin Zhu
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China
| | - Cuina Xie
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China
| | - Qingzhu Zeng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China
| | - Yang Yuan
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China
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Vargas Y, Castro Tron AE, Rodríguez Rodríguez A, Uribe RM, Joseph-Bravo P, Charli JL. Thyrotropin-Releasing Hormone and Food Intake in Mammals: An Update. Metabolites 2024; 14:302. [PMID: 38921437 PMCID: PMC11205479 DOI: 10.3390/metabo14060302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Revised: 05/23/2024] [Accepted: 05/23/2024] [Indexed: 06/27/2024] Open
Abstract
Thyrotropin-releasing hormone (TRH; pGlu-His-Pro-NH2) is an intercellular signal produced mainly by neurons. Among the multiple pharmacological effects of TRH, that on food intake is not well understood. We review studies demonstrating that peripheral injection of TRH generally produces a transient anorexic effect, discuss the pathways that might initiate this effect, and explain its short half-life. In addition, central administration of TRH can produce anorexic or orexigenic effects, depending on the site of injection, that are likely due to interaction with TRH receptor 1. Anorexic effects are most notable when TRH is injected into the hypothalamus and the nucleus accumbens, while the orexigenic effect has only been detected by injection into the brain stem. Functional evidence points to TRH neurons that are prime candidate vectors for TRH action on food intake. These include the caudal raphe nuclei projecting to the dorsal motor nucleus of the vagus, and possibly TRH neurons from the tuberal lateral hypothalamus projecting to the tuberomammillary nuclei. For other TRH neurons, the anatomical or physiological context and impact of TRH in each synaptic domain are still poorly understood. The manipulation of TRH expression in well-defined neuron types will facilitate the discovery of its role in food intake control in each anatomical scene.
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Affiliation(s)
| | | | | | | | | | - Jean-Louis Charli
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Avenida Universidad 2001, Cuernavaca 62210, Mexico; (Y.V.); (A.E.C.T.); (A.R.R.); (R.M.U.); (P.J.-B.)
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3
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Dong Y, Wang F, Wen J, Mao Y, Zhang S, Long T, Yang Z, Li L, Zhang J, Dong L, Liu G, Xu J. Synthesis and bioevaluation of Scutellarein-Tertramethylpyrazine hybrid molecules for the treatment of ischemic stroke. Bioorg Chem 2024; 142:106978. [PMID: 37984102 DOI: 10.1016/j.bioorg.2023.106978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 11/03/2023] [Accepted: 11/15/2023] [Indexed: 11/22/2023]
Abstract
Ischemic stroke caused by insufficient blood supply to the brain may produce a sequence of cascade reactions, leading to oxidative stress and ultimately inducing nerve cell damage. Therefore, hybrid molecules with multiple therapeutic effects have irreplaceable advantages for the treatment of ischemic stroke. Based on the previous works, two types of Scutellarein and Tertramethylpyrazine hybrid molecules were designed and synthesized according to the PepT 1-based design. After systematic research, all synthesized hybrid molecules exhibited more excellent neuroprotective effect and antiplatelet activity compared to the original drugs. Among them, the selected compound 1e with superior neuroprotective and antiplatelet effects could significantly enhance the permeability on the Caco-2 monolayer membrane and inhibit the Gly-Sar uptake on Caco-2 cells. Meanwhile, the result of intestinal perfusion has also confirmed that the absorption of the selected compound 1e is indeed increased. Further, the selected compound 1e significantly reduce the cerebral infarction volume of middle cerebral artery occlusion/reperfusion rats. Especially, the cerebral infarction volume of the high-dose 1e group reduced to one fourth of the model group. Meanwhile, results of hematoxylin-eosin staining also indicated that the damage in the hippocampus CA1 region was significantly alleviated after treatment with the compound 1e. Accordingly, molecular hybridization strategy is one of the simple and feasible ways to improve the therapeutic effect of single targeted drug.
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Affiliation(s)
- Yongxi Dong
- University Engineering Research Center for the Prevention and Treatment of Chronic Diseases by Authentic Medicinal Materials in Guizhou Province & School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China.
| | - Fang Wang
- University Engineering Research Center for the Prevention and Treatment of Chronic Diseases by Authentic Medicinal Materials in Guizhou Province & School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Jinlan Wen
- University Engineering Research Center for the Prevention and Treatment of Chronic Diseases by Authentic Medicinal Materials in Guizhou Province & School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Yongqing Mao
- University Engineering Research Center for the Prevention and Treatment of Chronic Diseases by Authentic Medicinal Materials in Guizhou Province & School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Shanhui Zhang
- University Engineering Research Center for the Prevention and Treatment of Chronic Diseases by Authentic Medicinal Materials in Guizhou Province & School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Tiemei Long
- University Engineering Research Center for the Prevention and Treatment of Chronic Diseases by Authentic Medicinal Materials in Guizhou Province & School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Zhangxiang Yang
- University Engineering Research Center for the Prevention and Treatment of Chronic Diseases by Authentic Medicinal Materials in Guizhou Province & School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Lei Li
- Guizhou provincial Center for Disease Control and Prevention, Guiyang 550004, Guizhou, China
| | - Jiquan Zhang
- University Engineering Research Center for the Prevention and Treatment of Chronic Diseases by Authentic Medicinal Materials in Guizhou Province & School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Li Dong
- University Engineering Research Center for the Prevention and Treatment of Chronic Diseases by Authentic Medicinal Materials in Guizhou Province & School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Gang Liu
- Guizhou Provincial Key Laboratory of Pathogenesis & Drug Research on Common Chronic Diseases & School of Basic Medicine, Guizhou Medical University, Guian New District 550025, Guizhou, China.
| | - Jianwei Xu
- University Engineering Research Center for the Prevention and Treatment of Chronic Diseases by Authentic Medicinal Materials in Guizhou Province & School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China; Tissue Engineering and Stem Cell Research Center of Guizhou Medical University & School of Basic Medicine, Guizhou Medical University, Guian New District 550025, Guizhou, China.
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4
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Sun L, Meng S. Structure-based model profiles affinity constant of drugs with hPEPT1 for rapid virtual screening of hPEPT1's substrate. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2016; 27:637-652. [PMID: 27586363 DOI: 10.1080/1062936x.2016.1216010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 07/19/2016] [Indexed: 06/06/2023]
Abstract
The human proton-coupled peptide transporter (hPEPT1) with broad substrates is an important route for improving the pharmacokinetic performance of drugs. Thus, it is essential to predict the affinity constant between drug molecule and hPEPT1 for rapid virtual screening of hPEPT1's substrate during lead optimization, candidate selection and hPEPT1 prodrug design. Here, a structure-based in silico model for 114 compounds was constructed based on eight structural parameters. This model was built by the multiple linear regression method and satisfied all the prerequisites of the regression models. For the entire data set, the r(2) and adjusted r(2) values were 0.74 and 0.72, respectively. Then, this model was used to perform substrate/non-substrate classification. For 29 drugs from DrugBank database, all were correctly classified as substrates of hPEPT1. This model was also used to perform substrate/non-substrate classification for 18 drugs and their prodrugs; this QSAR model also can distinguish between the substrate and non-substrate. In conclusion, the QSAR model in this paper was validated by a large external data set, and all results indicated that the developed model was robust, stable, and can be used for rapid virtual screening of hPEPT1's substrate in the early stage of drug discovery.
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Affiliation(s)
- L Sun
- a Department of Pharmaceutics , School of Pharmacy, China Medical University , Shenyang , Liaoning , P.R. China
| | - S Meng
- a Department of Pharmaceutics , School of Pharmacy, China Medical University , Shenyang , Liaoning , P.R. China
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5
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Kesharwani SS, Nandekar PP, Pragyan P, Rathod V, Sangamwar AT. Characterization of differences in substrate specificity among CYP1A1, CYP1A2 and CYP1B1: an integrated approach employing molecular docking and molecular dynamics simulations. J Mol Recognit 2016; 29:370-90. [PMID: 26916064 DOI: 10.1002/jmr.2537] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 12/16/2015] [Accepted: 01/08/2016] [Indexed: 01/05/2023]
Abstract
Recent trends in new drug discovery of anticancer drugs have made oncologists more aware of the fact that the new drug discovery must target the developing mechanism of tumorigenesis to improve the therapeutic efficacy of antineoplastic drugs. The drugs designed are expected to have high affinity towards the novel targets selectively. Current research highlights overexpression of CYP450s, particularly cytochrome P450 1A1 (CYP1A1), in tumour cells, representing a novel target for anticancer therapy. However, the CYP1 family is identified as posing significant problems in selectivity of anticancer molecules towards CYP1A1. Three members have been identified in the human CYP1 family: CYP1A1, CYP1A2 and CYP1B1. Although sequences of the three isoform have high sequence identity, they have distinct substrate specificities. The understanding of macromolecular features that govern substrate specificity is required to understand the interplay between the protein function and dynamics, design novel antitumour compounds that could be specifically metabolized by only CYP1A1 to mediate their antitumour activity and elucidate the reasons for differences in substrate specificity profile among the three proteins. In the present study, we employed a combination of computational methodologies: molecular docking and molecular dynamics simulations. We utilized eight substrates for elucidating the difference in substrate specificity of the three isoforms. Lastly, we conclude that the substrate specificity of a particular substrate depends upon the type of the active site residues, the dynamic motions in the protein structure upon ligand binding and the physico-chemical characteristics of a particular ligand. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Siddharth S Kesharwani
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar-, 160062 Punjab, India
| | - Prajwal P Nandekar
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar-, 160062 Punjab, India
| | - Preeti Pragyan
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar-, 160062 Punjab, India
| | - Vijay Rathod
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar-, 160062 Punjab, India
| | - Abhay T Sangamwar
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar-, 160062 Punjab, India
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6
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Meena CL, Ingole S, Rajpoot S, Thakur A, Nandeker PP, Sangamwar AT, Sharma SS, Jain R. Discovery of a low affinity thyrotropin-releasing hormone (TRH)-like peptide that exhibits potent inhibition of scopolamine-induced memory impairment in mice. RSC Adv 2015; 5:56872-56884. [PMID: 26191403 PMCID: PMC4501038 DOI: 10.1039/c5ra06935a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
TRH-like peptides were synthesized in which the critical N-terminus residue L-pGlu was replaced with various heteroaromatic rings, and the central residue histidine with 1-alkyl-L-histidines. All synthesized TRH-like peptides were evaluated in vitro as agonists in HEK mTRH-R1 and HEK mTRH-R2 cell lines, an expressing receptor binding assay (IC50), and cell signaling assay (EC50). The analeptic potential of the synthesized peptides was evaluated in vivo by using the antagonism of a pentobarbital-induced sleeping time. The peptides 6a, 6c and 6e were found to activate TRH-R2 with potencies (EC50) of 0.002 μM, 0.28 μM and 0.049 μM, respectively. In contrast, for signaling activation of TRH-R1, the same peptides required higher concentration of 0.414 μM, 50 μM and 19.1 μM, respectively in the FLIPR assay. The results showed that these peptides were 207, 178 and 389-fold selective towards TRH-R2 receptor subtype. In the antagonism of a pentobarbital-induced sleeping time assay, peptide 6c showed a 58.5% reduction in sleeping time. The peptide 6c exhibited high stability in rat blood plasma, a superior effect on the scopolamine-induced cognition impairment mice model, safe effects on the cardiovascular system, and general behavior using a functional observation battery (FOB).
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Affiliation(s)
- Chhuttan L. Meena
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, 160 062, Punjab, India
| | - Shubdha Ingole
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, 160 062, Punjab, India
| | - Satyendra Rajpoot
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, 160 062, Punjab, India
| | - Avinash Thakur
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, 160 062, Punjab, India
| | - Prajwal P. Nandeker
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, 160 062, Punjab, India
| | - Abhay T. Sangamwar
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, 160 062, Punjab, India
| | - Shyam S. Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, 160 062, Punjab, India
| | - Rahul Jain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, 160 062, Punjab, India
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7
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Bagul P, Khomane KS, Kesharwani SS, Pragyan P, Nandekar PP, Meena CL, Bansal AK, Jain R, Tikoo K, Sangamwar AT. Intestinal transport of TRH analogs through PepT1: the role ofin silicoandin vitromodeling. J Mol Recognit 2014; 27:609-17. [DOI: 10.1002/jmr.2385] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/22/2014] [Accepted: 04/22/2014] [Indexed: 01/01/2023]
Affiliation(s)
- Pravin Bagul
- Department of Pharmaceutics; National Institute of Pharmaceutical Education and Research (NIPER); Sector-67, S.A.S. Nagar Mohali Punjab 160062 India
| | - Kailas S. Khomane
- Department of Pharmaceutics; National Institute of Pharmaceutical Education and Research (NIPER); Sector-67, S.A.S. Nagar Mohali Punjab 160062 India
| | - Siddharth S. Kesharwani
- Department of Pharmacoinformatics; National Institute of Pharmaceutical Education and Research (NIPER); Sector-67, S.A.S. Nagar Mohali Punjab 160062 India
| | - Preeti Pragyan
- Department of Pharmacoinformatics; National Institute of Pharmaceutical Education and Research (NIPER); Sector-67, S.A.S. Nagar Mohali Punjab 160062 India
| | - Prajwal P. Nandekar
- Department of Pharmacoinformatics; National Institute of Pharmaceutical Education and Research (NIPER); Sector-67, S.A.S. Nagar Mohali Punjab 160062 India
| | - Chhuttan Lal Meena
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research (NIPER); Sector-67, S.A.S. Nagar Mohali Punjab 160062 India
| | - Arvind K. Bansal
- Department of Pharmaceutics; National Institute of Pharmaceutical Education and Research (NIPER); Sector-67, S.A.S. Nagar Mohali Punjab 160062 India
| | - Rahul Jain
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research (NIPER); Sector-67, S.A.S. Nagar Mohali Punjab 160062 India
| | - Kulbhushan Tikoo
- Department of Pharmacology and Toxicology; National Institute of Pharmaceutical Education and Research (NIPER); Sector-67, S.A.S. Nagar Mohali Punjab 160062 India
| | - Abhay T. Sangamwar
- Department of Pharmacoinformatics; National Institute of Pharmaceutical Education and Research (NIPER); Sector-67, S.A.S. Nagar Mohali Punjab 160062 India
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8
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Pragyan P, Kesharwani SS, Nandekar PP, Rathod V, Sangamwar AT. Predicting drug metabolism by CYP1A1, CYP1A2, and CYP1B1: insights from MetaSite, molecular docking and quantum chemical calculations. Mol Divers 2014; 18:865-78. [DOI: 10.1007/s11030-014-9534-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 06/19/2014] [Indexed: 12/13/2022]
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9
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Khomane KS, Bansal AK. Differential compaction behaviour of roller compacted granules of clopidogrel bisulphate polymorphs. Int J Pharm 2014; 472:288-95. [PMID: 24971694 DOI: 10.1016/j.ijpharm.2014.06.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Revised: 06/19/2014] [Accepted: 06/21/2014] [Indexed: 11/19/2022]
Abstract
In the present work, in-die and out-of-die compaction behaviour of dry-granulated powders of clopidogrel bisulphate (CLP) polymorphs, form I and form II, was investigated using a fully instrumented rotary tablet press. Each polymorph was compacted at three different roller pressures [70.3 (S1), 105.5 (S2) and 140.6 (S3)kgf/cm(2)], and obtained granules were characterized for their physico-mechanical properties. Compaction data were analyzed for out-of-die compressibility, tabletability and compactibility profiles, and in-die Heckel, Kawakita and Walker analysis. The roller compacted granules of both forms showed markedly different tabletting behaviour. Roller pressure exhibited a trend on compaction behaviour of form I granules, whereas, in case of form II, the effect was insignificant. Tabletability of the six granule batches follows the order; I_S1>I_S2>I_S3>II_S1≈II_S2≈II_S3. In case of form I, the reduced tabletability of the granules compacted at higher roller pressure was attributed to the decreased compressibility and plastic deformation. This was confirmed by compressibility plot and various mathematical parameters derived from Heckel (Py), Kawakita (1/b) and Walker (W) equations. The reduced tabletability of form I granules was due to 'granule hardening' during roller compaction. On the other hand, insignificant effect of roller compaction on tabletting behaviour of form II granules was attributed to brittle fragmentation. The extensive fragmentation of granules offered new 'clean' surfaces and higher contact points that negated the effect of granule hardening.
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Affiliation(s)
- Kailas S Khomane
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S. A. S Nagar, Mohali, Punjab 160 062, India
| | - Arvind K Bansal
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S. A. S Nagar, Mohali, Punjab 160 062, India.
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10
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Yadav IS, Nandekar PP, Srivastavaa S, Sangamwar A, Chaudhury A, Agarwal SM. Ensemble docking and molecular dynamics identify knoevenagel curcumin derivatives with potent anti-EGFR activity. Gene 2014; 539:82-90. [PMID: 24491504 DOI: 10.1016/j.gene.2014.01.056] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 12/25/2013] [Accepted: 01/21/2014] [Indexed: 01/06/2023]
Abstract
Epidermal growth factor receptor tyrosine kinase (EGFR-TK) is an attractive target for cancer therapy. Despite a number of effective EGFR inhibitors that are constantly expanding and different methods being employed to obtain novel compounds, the search for newer EGFR inhibitors is still a major scientific challenge. In the present study, a molecular docking and molecular dynamics investigation has been carried out with an ensemble of EGFR-TK structures against a synthetically feasible library of curcumin analogs to discover potent EGFR inhibitors. To resolve protein flexibility issue we have utilized 5 EGFR wild type crystal structures during docking as this gives improved possibility of identifying an active compound as compared to using a single crystal structure. We then identified five curcumin analogs representing different scaffolds that can serve as lead molecules. Finally, the 5 ns molecular dynamics simulation shows that knoevenagel condensate of curcumin specifically C29 and C30 can be used as starting blocks for developing effective leads capable of inhibiting EGFR.
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Affiliation(s)
- Inderjit S Yadav
- Bioinformatics Division, Institute of Cytology and Preventive Oncology, I-7 Sector-39, Noida 201301, India; Department of Bio & Nano Technology, Guru Jambheshwar University Science & Technology, Hisar, India
| | - Prajwal P Nandekar
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Punjab, India
| | | | - Abhay Sangamwar
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Punjab, India
| | - Ashok Chaudhury
- Department of Bio & Nano Technology, Guru Jambheshwar University Science & Technology, Hisar, India
| | - Subhash Mohan Agarwal
- Bioinformatics Division, Institute of Cytology and Preventive Oncology, I-7 Sector-39, Noida 201301, India.
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11
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Bagul P, Khomane KS, Bansal AK. Investigating permeability related hurdles in oral delivery of 11-keto-β-boswellic acid. Int J Pharm 2014; 464:104-10. [PMID: 24463070 DOI: 10.1016/j.ijpharm.2014.01.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 01/09/2014] [Accepted: 01/10/2014] [Indexed: 01/15/2023]
Abstract
11-Keto-β-boswellic acid (KBA) is an important and potent boswellic acids responsible for anti-inflammatory action of Boswellia extract. However, its pharmaceutical development has been severely limited by its poor oral bioavailability. The present work aims to investigate the permeability related hurdles in oral delivery of KBA. Gastrointestinal stability, gastrointestinal metabolism, adsorption-desorption kinetics and Caco-2 permeability studies have been carried out. KBA was found poorly permeable with Papp value of 2.85 ± 0.14 × 10(-6)cm/s. Higher absorptive transport indicated role of carrier mediated transport. Moreover, KBA transport across monolayer showed saturation kinetics at higher concentrations. KBA exposed to 1α,25-(OH)2 vitamin D3 treated cell monolayer showed the lowest Papp value of 2.01×10(-6) ± 0.02 × 10(-6)cm/s indicating role of CYP3A4 mediated metabolism during KBA transport. Metabolic stability experiments in jejunum S9 fractions further confirmed this. KBA was found unstable in simulated gastrointestinal fluids and also got accumulated in the enterocytes. Sorption and desorption kinetic studies using Caco-2 cells further confirmed accumulation of KBA inside the enterocytes. KBA also showed pH dependent permeability with higher flux at gradient pH condition of pH 6.5 at apical and 7.4 at basolateral. Taken as whole, the major permeability related hurdles that hampered oral bioavailability of KBA included its gastrointestinal instability, CYP3A4 mediated intestinal metabolism, accumulation within the enterocytes and saturable kinetics. The present investigation may help in designing novel drug delivery system for KBA.
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Affiliation(s)
- Pravin Bagul
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar, Mohali, Punjab 160 062, India
| | - Kailas S Khomane
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar, Mohali, Punjab 160 062, India
| | - Arvind K Bansal
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar, Mohali, Punjab 160 062, India.
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12
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Brandsch M. Drug transport via the intestinal peptide transporter PepT1. Curr Opin Pharmacol 2013; 13:881-7. [PMID: 24007794 DOI: 10.1016/j.coph.2013.08.004] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/01/2013] [Accepted: 08/02/2013] [Indexed: 01/12/2023]
Abstract
The focus of this review is on the pharmaceutical relevance of the intestinal peptide transporter PepT1. The review is limited to the progress made in the field over the past two years. Much of this progress is being driven by the prevailing view that PepT1 can be used for drug delivery purposes. Studies have indeed shown that several drugs, prodrugs and drug candidates gain entry into the systemic circulation via PepT1. Very recent examples are prodrugs of zanamivir, oseltamivir and didanosine.
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Affiliation(s)
- Matthias Brandsch
- Biozentrum of the Martin-Luther-University Halle-Wittenberg, D-06120 Halle, Germany.
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13
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Nandekar PP, Tumbi KM, Bansal N, Rathod VP, Labhsetwar LB, Soumya N, Singh S, Sangamwar AT. Chem-bioinformatics and in vitro approaches for candidate optimization: a case study of NSC745689 as a promising antitumor agent. Med Chem Res 2012. [DOI: 10.1007/s00044-012-0364-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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