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Lolak N, Akocak S, Durgun M, Duran HE, Necip A, Türkeş C, Işık M, Beydemir Ş. Novel bis-ureido-substituted sulfaguanidines and sulfisoxazoles as carbonic anhydrase and acetylcholinesterase inhibitors. Mol Divers 2023; 27:1735-1749. [PMID: 36136229 DOI: 10.1007/s11030-022-10527-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 09/09/2022] [Indexed: 10/14/2022]
Abstract
To discover alternative substances to compounds used to treat many diseases, especially treating Alzheimer's disease (AD) and Parkinson's disease targeting carbonic anhydrase (hCA) and acetylcholinesterase (AChE) enzymes, is important. For this purpose, a series of novel bis-ureido-substituted sulfaguanidine (SG1-4) and sulfisoxazole (SO1-4) derivatives were synthesized, and their inhibitory capacities were screened against hCA isoenzymes (hCA I and II) and AChE. Possible binding mechanisms of inhibitors to the active site were elucidated by in silico studies, and the results were supported by in vitro results. Moreover, the percent radical scavenging capacities of the derivatives were also evaluated. The derivatives (SG1-4 and SO1-4) were more effective against hCAs compared to standard drug acetazolamide (KI values of 98.28-439.17 nM for hCA I and II, respectively) and exhibited the highest inhibition with the KIs in the ranges of 2.54 ± 0.50-41.02 ± 7.52 nM for hCA I, 11.20 ± 2.97-67.14 ± 13.58 nM for hCA II, and 257.60 ± 27.84-442.60 ± 52.13 nM for AChE. Also, compounds SG1 and SO1 also showed ABTS radical scavenging activity at the rate of 70% and 78%, respectively. These results will contribute to the literature for the rational design and synthesis of new potent and selective inhibitors targeting hCAs and AChE with multifunctional effects such as radical scavenging as well as inhibition. This study focused on the synthesis and inhibitory effects of bis-ureido-substituted sulfaguanidine (SG1-4) and sulfisoxazole (SO1-4) derivatives against human hCA I and II isoforms and AChE. In order to test synthesized derivatives' free radical scavenging potentials were the DPPH and ABTS assays. In silico studies elucidated possible binding mechanisms of inhibitors to the active site.
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Affiliation(s)
- Nebih Lolak
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Adıyaman University, 02040, Adiyaman, Turkey.
| | - Süleyman Akocak
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Adıyaman University, 02040, Adiyaman, Turkey
| | - Mustafa Durgun
- Department of Chemistry, Faculty of Arts and Sciences, Harran University, 63290, Şanlıurfa, Turkey
| | - Hatice Esra Duran
- Department of Medical Biochemistry, Faculty of Medicine, Kafkas University, 36100, Kars, Turkey
| | - Adem Necip
- Department of Pharmacy Services, Vocational School of Health Services, Harran University, 63300, Şanlıurfa, Turkey
| | - Cüneyt Türkeş
- Department of Biochemistry, Faculty of Pharmacy, Erzincan Binali Yıldırım University, 24002, Erzincan, Turkey.
| | - Mesut Işık
- Department of Bioengineering, Faculty of Engineering, Bilecik Şeyh Edebali University, 11230, Bilecik, Turkey
| | - Şükrü Beydemir
- Department of Biochemistry, Faculty of Pharmacy, Anadolu University, 26470, Eskişehir, Turkey
- The Rectorate of Bilecik Şeyh Edebali University, 11230, Bilecik, Turkey
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Solanki A, Savla SR, Borkar MR, Bhatt LK. Sulfamethizole attenuates poloxamer 407-induced atherosclerotic neointima formation via inhibition of mTOR in C57BL/6 mice. J Biochem Mol Toxicol 2023; 37:e23322. [PMID: 36799065 DOI: 10.1002/jbt.23322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 12/04/2022] [Accepted: 02/08/2023] [Indexed: 02/18/2023]
Abstract
Mammalian target of Rapamycin C1 (mTORC1) inhibition limits plaque progression in atherosclerosis. The present study evaluated the protective effect of sulfamethizole on poloxamer 407-induced atherosclerotic neointima formation in C57BL/6 mice via mTOR inhibition. Poloxamer 407 (P-407) (0.5 g/kg body weight) was administered intraperitoneally to male C57BL/6 mice every third day for 148 days to induce chronic hyperlipidemia. From Day 121 to 148, animals were additionally administered Sulfamethizole (5, 10, and 50 mg/kg, p.o.), Rapamycin (0.5 mg/kg, positive control), or vehicle (1 ml/kg). Plasma lipid levels were measured on Days 120 and 148. Upon sacrifice, histological studies were performed, and aortic tissue interleukin (IL)-6, tumor necrosis factor-α (TNF-α), and mTOR levels were evaluated. A molecular docking study was carried out to mimic the interaction of sulfamethizole with mTOR protein. Chronic P-407 administration significantly (p < 0.001) elevated plasma lipid levels, compared with those of the normal control group. Chronic hyperlipidemia resulted in increased tunica intima thickness, collagen deposition, and IL-6, TNF-α, and mTOR levels. Treatment with Sulfamethizole attenuated these parameters significantly in a dose-dependent manner. Molecular docking studies showed a significant interaction of Sulfamethizole with mTOR. In conclusion, this study suggests that sulfamethizole significantly limits poloxamer 407-induced atherosclerotic neointima formation in C57BL/6 mice via mTOR inhibition.
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Affiliation(s)
- Ankita Solanki
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Shreya R Savla
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Maheshkumar R Borkar
- Department of Pharmaceutical Chemistry, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Lokesh K Bhatt
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
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Sunil AA, Skaria T. Novel regulators of airway epithelial barrier function during inflammation: potential targets for drug repurposing. Expert Opin Ther Targets 2022; 26:119-132. [PMID: 35085478 DOI: 10.1080/14728222.2022.2035720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Endogenous inflammatory signaling molecules resulting from deregulated immune responses, can impair airway epithelial barrier function and predispose individuals with airway inflammatory diseases to exacerbations and lung infections. Targeting the specific endogenous factors disrupting the airway barrier therefore has the potential to prevent disease exacerbations without affecting the protective immune responses. AREAS COVERED Here, we review the endogenous factors and specific mechanisms disrupting airway epithelial barrier during inflammation and reflect on whether these factors can be specifically targeted by repurposed existing drugs. Literature search was conducted using PubMed, drug database of US FDA and European Medicines Agency until and including September 2021. EXPERT OPINION IL-4 and IL-13 signaling are the major pathways disrupting the airway epithelial barrier during airway inflammation. However, blocking IL-4/IL-13 signaling may adversely affect protective immune responses and increase susceptibility of host to infections. An alternate approach to modulate airway epithelial barrier function involves targeting specific downstream component of IL-4/IL-13 signaling or different inflammatory mediators responsible for regulation of airway epithelial barrier. Airway epithelium-targeted therapy using inhibitors of HDAC, HSP90, MIF, mTOR, IL-17A and VEGF may be a potential strategy to prevent airway epithelial barrier dysfunction in airway inflammatory diseases.
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Affiliation(s)
- Ahsan Anjoom Sunil
- School of Biotechnology, National Institute of Technology Calicut, Calicut, Kerala, India
| | - Tom Skaria
- School of Biotechnology, National Institute of Technology Calicut, Calicut, Kerala, India
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Exploiting activity cliffs for building pharmacophore models and comparison with other pharmacophore generation methods: sphingosine kinase 1 as case study. J Comput Aided Mol Des 2022; 36:39-62. [PMID: 35059939 DOI: 10.1007/s10822-021-00435-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 11/24/2021] [Indexed: 12/20/2022]
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Glibenclamide ameliorates the expression of neurotrophic factors in sevoflurane anaesthesia-induced oxidative stress and cognitive impairment in hippocampal neurons of old rats. J Vet Res 2021; 65:527-538. [PMID: 35112009 PMCID: PMC8775723 DOI: 10.2478/jvetres-2021-0064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 11/19/2021] [Indexed: 11/28/2022] Open
Abstract
Introduction Several antidiabetic medications have been proposed as prospective treatments for cognitive impairments in type 2 diabetes patients, glibenclamide (GBC) among them. Our research aimed to evaluate the impact of GBC on hippocampal learning memory and inflammation due to enhanced neurotrophic signals induced by inhalation of sevoflurane. Material and Methods Rats (Sprague Dawley, both sexes) were assigned to four groups: a control (vehicle, p.o.), GBC (10 mg/kg b.w.; p.o.), low-dose sevoflurane and low-dose sevoflurane + GBC (10 mg/kg b.w.; p.o.) for 23 days. Terminal deoxynucleotidyl transferase dUTP nick end labelling (TUNEL) staining was performed to analyse the count of apoptotic cells and ELISA was conducted to assess the protein signals. A Western blot, a Y-maze test, and a Morris maze test were performed, and the results analysed. Blood and tissues were collected, and isolation of RNA was performed with qRT-PCR. Results The Morris maze test results revealed an improvement in the length of the escape latency on days 1 (P < 0.05), 2 (P < 0.01), 3, and 4 in the low-dose Sevo group. Time spent in the quadrant and crossing axis and the percentage of spontaneous alterations showed a substantial decrease in the low-dose Sevo group which received GBC at 10 mg/kg b.w. Significant increases were shown in IL-6 and TNF-α levels in the low-dose Sevo group, whereas a decrease was evident in the GBC group. Conclusion Our results indicate that glibenclamide may be a novel drug to prevent sevoflurane inhalation-induced impaired learning and reduce brain-derived neurotrophic factor release, which may be a vital target for the development of potential therapies for cognitive deficits and neurodegeneration.
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Türkeş C, Akocak S, Işık M, Lolak N, Taslimi P, Durgun M, Gülçin İ, Budak Y, Beydemir Ş. Novel inhibitors with sulfamethazine backbone: synthesis and biological study of multi-target cholinesterases and α-glucosidase inhibitors. J Biomol Struct Dyn 2021; 40:8752-8764. [PMID: 33950796 DOI: 10.1080/07391102.2021.1916599] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The underlying cause of many metabolic diseases is abnormal changes in enzyme activity in metabolism. Inhibition of metabolic enzymes such as cholinesterases (ChEs; acetylcholinesterase, AChE and butyrylcholinesterase, BChE) and α-glucosidase (α-GLY) is one of the accepted approaches in the treatment of Alzheimer's disease (AD) and diabetes mellitus (DM). Here we reported an investigation of a new series of novel ureido-substituted derivatives with sulfamethazine backbone (2a-f) for the inhibition of AChE, BChE, and α-GLY. All the derivatives demonstrated activity in nanomolar levels as AChE, BChE, and α-GLY inhibitors with KI values in the range of 56.07-204.95 nM, 38.05-147.04 nM, and 12.80-79.22 nM, respectively. Among the many strong N-(4,6-dimethylpyrimidin-2-yl)-4-(3-substitutedphenylureido) benzenesulfonamide derivatives (2a-f) detected against ChEs, compound 2c, the 4-fluorophenylureido derivative, demonstrated the most potent inhibition profile towards AChE and BChE. A comprehensive ligand/receptor interaction prediction was performed in silico for the three metabolic enzymes providing molecular docking investigation using Glide XP, MM-GBSA, and ADME-Tox modules. The present research reinforces the rationale behind utilizing inhibitors with sulfamethazine backbone as innovative anticholinergic and antidiabetic agents with a new mechanism of action, submitting propositions for the rational design and synthesis of novel strong inhibitors targeting ChEs and α-GLY.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Cüneyt Türkeş
- Department of Biochemistry, Faculty of Pharmacy, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Suleyman Akocak
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Adıyaman University, Adıyaman, Turkey
| | - Mesut Işık
- Department of Bioengineering, Faculty of Engineering, Bilecik Şeyh Edebali University, Bilecik, Turkey
| | - Nebih Lolak
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Adıyaman University, Adıyaman, Turkey
| | - Parham Taslimi
- Department of Biotechnology, Faculty of Science, Bartın University, Bartın, Turkey
| | - Mustafa Durgun
- Department of Chemistry, Faculty of Arts and Sciences, Harran University, Şanlıurfa, Turkey
| | - İlhami Gülçin
- Department of Chemistry, Faculty of Sciences, Atatürk University, Erzurum, Turkey
| | - Yakup Budak
- Department of Chemistry, Faculty of Arts and Sciences, Gaziosmanpaşa University, Tokat, Turkey
| | - Şükrü Beydemir
- Department of Biochemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey.,The Rectorate of Bilecik Şeyh Edebali University, Bilecik, Turkey
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Parate S, Kumar V, Lee G, Rampogu S, Hong JC, Lee KW. Marine-Derived Natural Products as ATP-Competitive mTOR Kinase Inhibitors for Cancer Therapeutics. Pharmaceuticals (Basel) 2021; 14:ph14030282. [PMID: 33801030 PMCID: PMC8003863 DOI: 10.3390/ph14030282] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/15/2021] [Accepted: 03/18/2021] [Indexed: 02/08/2023] Open
Abstract
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase portraying a quintessential role in cellular proliferation and survival. Aberrations in the mTOR signaling pathway have been reported in numerous cancers including thyroid, lung, gastric and ovarian cancer, thus making it a therapeutic target. To attain this objective, an in silico investigation was designed, employing a pharmacophore modeling approach. A structure-based pharmacophore (SBP) model exploiting the key features of a selective mTOR inhibitor, Torkinib directed at the ATP-binding pocket was generated. A Marine Natural Products (MNP) library was screened using SBP model as a query. The retrieved compounds after consequent drug-likeness filtration were subjected to molecular docking with mTOR, thus revealing four MNPs with better scores than Torkinib. Successive refinement via molecular dynamics simulations demonstrated that the hits formed crucial interactions with key residues of the pocket. Furthermore, the four identified hits exhibited good binding free energy scores through MM-PBSA calculations and the subsequent in silico toxicity assessments displayed three hits deemed essentially non-carcinogenic and non-mutagenic. The hits presented in this investigation could act as potent ATP-competitive mTOR inhibitors, representing a platform for the future discovery of drugs from marine natural origin.
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Affiliation(s)
- Shraddha Parate
- Division of Applied Life Science, Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University (GNU), 501 Jinju-daero, Jinju 52828, Korea; (S.P.); (G.L.)
| | - Vikas Kumar
- Division of Life Sciences, Department of Bio & Medical Big Data (BK21 Program), Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), 501 Jinju-daero, Jinju 52828, Korea; (V.K.); (S.R.)
| | - Gihwan Lee
- Division of Applied Life Science, Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University (GNU), 501 Jinju-daero, Jinju 52828, Korea; (S.P.); (G.L.)
| | - Shailima Rampogu
- Division of Life Sciences, Department of Bio & Medical Big Data (BK21 Program), Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), 501 Jinju-daero, Jinju 52828, Korea; (V.K.); (S.R.)
| | - Jong Chan Hong
- Division of Applied Life Science, Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University (GNU), 501 Jinju-daero, Jinju 52828, Korea; (S.P.); (G.L.)
- Correspondence: (J.C.H.); (K.W.L.); Tel.: +82-55-772-1360 (K.W.L.)
| | - Keun Woo Lee
- Division of Life Sciences, Department of Bio & Medical Big Data (BK21 Program), Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), 501 Jinju-daero, Jinju 52828, Korea; (V.K.); (S.R.)
- Correspondence: (J.C.H.); (K.W.L.); Tel.: +82-55-772-1360 (K.W.L.)
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Abutayeh RF, Almaliti J, Taha MO. Design and Synthesis of New Sulfonamides-Based Flt3 Inhibitors. Med Chem 2020; 16:403-412. [PMID: 30931863 DOI: 10.2174/1573406415666190401144053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 01/21/2019] [Accepted: 03/07/2019] [Indexed: 02/06/2023]
Abstract
Background:
Flt3 is an oncogenic kinase involved in different leukemias. It is most
prominently associated with acute myeloid leukemia (AML). Flt3-specific inhibitors have shown
promising results in interfering with AML.
Methods:
The crystallographic structures of two inhibitors complexed within Flt3, namely, quizartinib
and F6M, were used to guide the synthesis of new sulfonamide-based Flt3 inhibitors.
Results:
One of the prepared compounds showed low micromolar anti-Flt3 bioactivity, and interestingly,
low micromolar bioactivity against the related oncogenic kinase VEGFR2.
Conclusion:
Sulfonamides were successfully used as privileged scaffolds for the synthesis of
novel Flt3 inhibitors of micromolar potencies.
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Affiliation(s)
- Reem F. Abutayeh
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Science Private University, Amman, Jordan
| | - Jehad Almaliti
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman, Jordan
| | - Mutasem O. Taha
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman, Jordan
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Elmaidomy AH, Mohammed R, Owis AI, Hetta MH, AboulMagd AM, Siddique AB, Abdelmohsen UR, Rateb ME, El Sayed KA, Hassan HM. Triple-negative breast cancer suppressive activities, antioxidants and pharmacophore model of new acylated rhamnopyranoses from Premna odorata. RSC Adv 2020; 10:10584-10598. [PMID: 35492955 PMCID: PMC9050340 DOI: 10.1039/d0ra01697g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 01/22/2021] [Accepted: 02/25/2020] [Indexed: 01/22/2023] Open
Abstract
Phytochemical investigation of Premna odorata Blanco “Lamiaceae” young stems afforded four new acylated rhamnopyranoses 1–4, along with fourteen known compounds 5–19.
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Affiliation(s)
- Abeer H. Elmaidomy
- Department of Pharmacognosy
- Faculty of Pharmacy
- Beni-Suef University
- Beni-Suef 62514
- Egypt
| | - Rabab Mohammed
- Department of Pharmacognosy
- Faculty of Pharmacy
- Beni-Suef University
- Beni-Suef 62514
- Egypt
| | - Asmsaa I. Owis
- Department of Pharmacognosy
- Faculty of Pharmacy
- Beni-Suef University
- Beni-Suef 62514
- Egypt
| | - Mona H. Hetta
- Department of Pharmacognosy
- Faculty of Pharmacy
- Fayoum University
- Fayoum 63514
- Egypt
| | - Asmaa M. AboulMagd
- Department of Pharmaceutical Chemistry
- Faculty of Pharmacy
- Nahda University
- Beni-Suef 62514
- Egypt
| | - Abu Bakar Siddique
- School of Basic Pharmaceutical and Toxicological Sciences
- College of Pharmacy
- University of Louisiana at Monroe
- Monroe
- USA
| | | | - Mostafa E. Rateb
- Department of Pharmacognosy
- Faculty of Pharmacy
- Beni-Suef University
- Beni-Suef 62514
- Egypt
| | - Khalid A. El Sayed
- School of Basic Pharmaceutical and Toxicological Sciences
- College of Pharmacy
- University of Louisiana at Monroe
- Monroe
- USA
| | - Hossam M. Hassan
- Department of Pharmacognosy
- Faculty of Pharmacy
- Beni-Suef University
- Beni-Suef 62514
- Egypt
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Elmaidomy AH, Mohammed R, M Hassan H, I Owis A, E Rateb M, A Khanfar M, Krischke M, J Mueller M, Ramadan Abdelmohsen U. Metabolomic Profiling and Cytotoxic Tetrahydrofurofuran Lignans Investigations from Premna odorata Blanco. Metabolites 2019; 9:E223. [PMID: 31614908 PMCID: PMC6836009 DOI: 10.3390/metabo9100223] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/04/2019] [Accepted: 10/08/2019] [Indexed: 11/16/2022] Open
Abstract
Metabolomic profiling of different Premna odorata Blanco (Lamiaceae) organs, bark, wood, young stems, flowers, and fruits dereplicated 20, 20, 10, 20, and 20 compounds, respectively, using LC-HRESIMS. The identified metabolites (1-34) belonged to different chemical classes, including iridoids, flavones, phenyl ethanoids, and lignans. A phytochemical investigation of P. odorata bark afforded one new tetrahydrofurofuran lignan, 4β-hydroxyasarinin 35, along with fourteen known compounds. The structure of the new compound was confirmed using extensive 1D and 2D NMR, and HRESIMS analyses. A cytotoxic investigation of compounds 35-38 against the HL-60, HT-29, and MCF-7 cancer cell lines, using the MTT assay showed that compound 35 had cytotoxic effects against HL-60 and MCF-7 with IC50 values of 2.7 and 4.2 µg/mL, respectively. A pharmacophore map of compounds 35 showed two hydrogen bond acceptor (HBA) aligning the phenoxy oxygen atoms of benzodioxole moieties, two aromatic ring features vectored on the two phenyl rings, one hydrogen bond donor (HBD) feature aligning the central hydroxyl group and thirteen exclusion spheres which limit the boundaries of sterically inaccessible regions of the target's active site.
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Affiliation(s)
- Abeer H Elmaidomy
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt.
| | - Rabab Mohammed
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt.
| | - Hossam M Hassan
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt.
| | - Asmaa I Owis
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt.
| | - Mostafa E Rateb
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt.
- School of Computing, Engineering & Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK.
| | - Mohammad A Khanfar
- Faculty of Pharmacy, The University of Jordan, P.O Box 13140, Amman 11942, Jordan.
- College of Pharmacy, Alfaisal University, Al Takhassusi Rd, Riyadh 11533, Saudi Arabia.
| | - Markus Krischke
- Julius-von-Sachs-Institute of Biosciences, Biocenter, Pharmaceutical Biology, University of Würzburg, 97070 Würzburg, Germany.
| | - Martin J Mueller
- Julius-von-Sachs-Institute of Biosciences, Biocenter, Pharmaceutical Biology, University of Würzburg, 97070 Würzburg, Germany.
| | - Usama Ramadan Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, Universities Zone, New Minia City 61111, Egypt.
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt.
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Vucicevic J, Nikolic K, Mitchell JB. Rational Drug Design of Antineoplastic Agents Using 3D-QSAR, Cheminformatic, and Virtual Screening Approaches. Curr Med Chem 2019; 26:3874-3889. [DOI: 10.2174/0929867324666170712115411] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 06/06/2017] [Accepted: 06/13/2017] [Indexed: 01/07/2023]
Abstract
Background:Computer-Aided Drug Design has strongly accelerated the development of novel antineoplastic agents by helping in the hit identification, optimization, and evaluation.Results:Computational approaches such as cheminformatic search, virtual screening, pharmacophore modeling, molecular docking and dynamics have been developed and applied to explain the activity of bioactive molecules, design novel agents, increase the success rate of drug research, and decrease the total costs of drug discovery. Similarity, searches and virtual screening are used to identify molecules with an increased probability to interact with drug targets of interest, while the other computational approaches are applied for the design and evaluation of molecules with enhanced activity and improved safety profile.Conclusion:In this review are described the main in silico techniques used in rational drug design of antineoplastic agents and presented optimal combinations of computational methods for design of more efficient antineoplastic drugs.
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Affiliation(s)
- Jelica Vucicevic
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11000 Belgrade, Serbia
| | - Katarina Nikolic
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11000 Belgrade, Serbia
| | - John B.O. Mitchell
- EaStCHEM School of Chemistry and Biomedical Sciences Research Complex, University of St Andrews, St Andrews KY16 9ST, United Kingdom
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Abutayeh RF, Taha MO. Discovery of novel Flt3 inhibitory chemotypes through extensive ligand-based and new structure-based pharmacophore modelling methods. J Mol Graph Model 2019; 88:128-151. [PMID: 30703688 DOI: 10.1016/j.jmgm.2019.01.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 01/03/2019] [Accepted: 01/17/2019] [Indexed: 01/10/2023]
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Al-Sha'er MA, Al-Aqtash RA, Taha MO. Discovery of New Phosphoinositide 3-kinase Delta (PI3Kδ) Inhibitors via Virtual Screening using Crystallography-derived Pharmacophore Modelling and QSAR Analysis. Med Chem 2019; 15:588-601. [PMID: 30799792 DOI: 10.2174/1573406415666190222125333] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 01/31/2019] [Accepted: 02/07/2019] [Indexed: 01/29/2023]
Abstract
BACKGROUND PI3Kδ is predominantly expressed in hematopoietic cells and participates in the activation of leukocytes. PI3Kδ inhibition is a promising approach for treating inflammatory diseases and leukocyte malignancies. Accordingly, we decided to model PI3Kδ binding. METHODS Seventeen PI3Kδ crystallographic complexes were used to extract 94 pharmacophore models. QSAR modelling was subsequently used to select the superior pharmacophore(s) that best explain bioactivity variation within a list of 79 diverse inhibitors (i.e., upon combination with other physicochemical descriptors). RESULTS The best QSAR model (r2 = 0.71, r2 LOO = 0.70, r2 press against external testing list of 15 compounds = 0.80) included a single crystallographic pharmacophore of optimal explanatory qualities. The resulting pharmacophore and QSAR model were used to screen the National Cancer Institute (NCI) database for new PI3Kδ inhibitors. Two hits showed low micromolar IC50 values. CONCLUSION Crystallography-based pharmacophores were successfully combined with QSAR analysis for the identification of novel PI3Kδ inhibitors.
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Affiliation(s)
- Mahmoud A Al-Sha'er
- Faculty of Pharmacy, Zarqa University, P.O. Box 132222, Zarqa, 13132, Jordan
| | - Rua'a A Al-Aqtash
- Faculty of Pharmacy, Zarqa University, P.O. Box 132222, Zarqa, 13132, Jordan
| | - Mutasem O Taha
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, The University of Jordan, Amman, Jordan
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Rad SK, Arya A, Karimian H, Madhavan P, Rizwan F, Koshy S, Prabhu G. Mechanism involved in insulin resistance via accumulation of β-amyloid and neurofibrillary tangles: link between type 2 diabetes and Alzheimer's disease. Drug Des Devel Ther 2018; 12:3999-4021. [PMID: 30538427 PMCID: PMC6255119 DOI: 10.2147/dddt.s173970] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The pathophysiological link between type 2 diabetes mellitus (T2DM) and Alzheimer's disease (AD) has been suggested in several reports. Few findings suggest that T2DM has strong link in the development process of AD, and the complete mechanism is yet to be revealed. Formation of amyloid plaques (APs) and neurofibrillary tangles (NFTs) are two central hallmarks in the AD. APs are the dense composites of β-amyloid protein (Aβ) which accumulates around the nerve cells. Moreover, NFTs are the twisted fibers containing hyperphosphorylated tau proteins present in certain residues of Aβ that build up inside the brain cells. Certain factors contribute to the aetiogenesis of AD by regulating insulin signaling pathway in the brain and accelerating the formation of neurotoxic Aβ and NFTs via various mechanisms, including GSK3β, JNK, CamKII, CDK5, CK1, MARK4, PLK2, Syk, DYRK1A, PPP, and P70S6K. Progression to AD could be influenced by insulin signaling pathway that is affected due to T2DM. Interestingly, NFTs and APs lead to the impairment of several crucial cascades, such as synaptogenesis, neurotrophy, and apoptosis, which are regulated by insulin, cholesterol, and glucose metabolism. The investigation of the molecular cascades through insulin functions in brain contributes to probe and perceive progressions of diabetes to AD. This review elaborates the molecular insights that would help to further understand the potential mechanisms linking T2DM and AD.
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Affiliation(s)
- Sima Kianpour Rad
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Aditya Arya
- Department of Pharmacology and Therapeutics, School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia,
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, VIC, Australia,
- Malaysian Institute of Pharmaceuticals and Nutraceuticals (IPharm), Bukit Gambir, Gelugor, Pulau Pinang, Malaysia,
| | - Hamed Karimian
- Department of Pharmacology and Therapeutics, School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia,
| | - Priya Madhavan
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
| | - Farzana Rizwan
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
| | - Shajan Koshy
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
| | - Girish Prabhu
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
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15
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Liu J, Liu L, Tian Z, Li Y, Shi C, Shi J, Wei S, Zhao Y, Zhang C, Bai B, Chen Z, Zhang H. In Silico Discovery of a Small Molecule Suppressing Lung Carcinoma A549 Cells Proliferation and Inducing Autophagy via mTOR Pathway Inhibition. Mol Pharm 2018; 15:5427-5436. [PMID: 30346178 DOI: 10.1021/acs.molpharmaceut.8b00996] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jiyuan Liu
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Li Liu
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi’an, Shaanxi Province 710072, China
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
| | - Zhen Tian
- College of Horticulture and Plant Protection, Yangzhou University, Wenhui East Road, NO. 48, Yangzhou, Jiangsu Province 225009, China
| | - Yifan Li
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Changhong Shi
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
| | - Junling Shi
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi’an, Shaanxi Province 710072, China
| | - Sanhua Wei
- Department of Clinical Laboratory and Research Center, Tangdu Hospital, Air Force Medical University, No. 569 Xinsi Road, Xi’an, Shaanxi 710038, China
| | - Yong Zhao
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
| | - Caiqing Zhang
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
| | - Bing Bai
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
| | - Zhinan Chen
- National Translational Science Center for Molecular Medicine, Department of Cell Biology, School of Basic Medicine, Air Force Medical University, Xi’an, Shaanxi Province 710032, China
| | - Hai Zhang
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
- National Translational Science Center for Molecular Medicine, Department of Cell Biology, School of Basic Medicine, Air Force Medical University, Xi’an, Shaanxi Province 710032, China
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16
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Zhong KL, Chen F, Hong H, Ke X, Lv YG, Tang SS, Zhu YB. New views and possibilities of antidiabetic drugs in treating and/or preventing mild cognitive impairment and Alzheimer's Disease. Metab Brain Dis 2018; 33:1009-1018. [PMID: 29626315 DOI: 10.1007/s11011-018-0227-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 03/28/2018] [Indexed: 12/13/2022]
Abstract
Mounting evidence suggests that diabetes mellitus (DM) is associated with mild cognitive impairment (MCI), vascular dementia and Alzheimer's disease (AD). Biological, clinical and epidemiological data support a close link between DM and AD. Increasingly, studies have found that several antidiabetic agents can promote neurogenesis, and clinically ameliorate cognitive and memory impairments in different clinical settings. Data has shown that these antidiabetic drugs positively affect mitochondrial and synaptic function, neuroinflammation, and brain metabolism. Evidence to date strongly suggests that these antidiabetic drugs could be developed as disease-modifying therapies for MCI and AD in patients with and without diabetes.
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Affiliation(s)
- Kai Long Zhong
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, China
| | - Fang Chen
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, 210009, China
| | - Hao Hong
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, 210009, China
| | - Xuan Ke
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, 210009, China
| | - Yang Ge Lv
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, 210009, China
| | - Su Su Tang
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, 210009, China
| | - Yu Bing Zhu
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, China.
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17
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Hatmal MM, Taha MO. Combining Stochastic Deformation/Relaxation and Intermolecular Contacts Analysis for Extracting Pharmacophores from Ligand-Receptor Complexes. J Chem Inf Model 2018. [PMID: 29529367 DOI: 10.1021/acs.jcim.7b00708] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We previously combined molecular dynamics (classical or simulated annealing) with ligand-receptor contacts analysis as a means to extract valid pharmacophore model(s) from single ligand-receptor complexes. However, molecular dynamics methods are computationally expensive and time-consuming. Here we describe a novel method for extracting valid pharmacophore model(s) from a single crystallographic structure within a reasonable time scale. The new method is based on ligand-receptor contacts analysis following energy relaxation of a predetermined set of randomly deformed complexes generated from the targeted crystallographic structure. Ligand-receptor contacts maintained across many deformed/relaxed structures are assumed to be critical and used to guide pharmacophore development. This methodology was implemented to develop valid pharmacophore models for PI3K-γ, RENIN, and JAK1. The resulting pharmacophore models were validated by receiver operating characteristic (ROC) analysis against inhibitors extracted from the CHEMBL database. Additionally, we implemented pharmacophores extracted from PI3K-γ to search for new inhibitors from the National Cancer Institute list of compounds. The process culminated in new PI3K-γ/mTOR inhibitory leads of low micromolar IC50s.
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Affiliation(s)
- Ma'mon M Hatmal
- Department of Medical Laboratory Sciences, Faculty of Allied Health Sciences , The Hashemite University , P.O. Box 330127 , Zarqa 13133 , Jordan
| | - Mutasem O Taha
- Drug Discovery Unit, Department of Pharmaceutical Sciences, Faculty of Pharmacy , University of Jordan , Amman 11942 , Jordan
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18
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Thiyagarajan V, Lee KW, Leong MK, Weng CF. Potential natural mTOR inhibitors screened by in silico approach and suppress hepatic stellate cells activation. J Biomol Struct Dyn 2017; 36:4220-4234. [DOI: 10.1080/07391102.2017.1411295] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Varadharajan Thiyagarajan
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Shoufeng, Hualien, 97401, Taiwan
| | - Kuan-Wei Lee
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Shoufeng, Hualien, 97401, Taiwan
| | - Max K. Leong
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Shoufeng, Hualien, 97401, Taiwan
- Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien, 97401, Taiwan
| | - Ching-Feng Weng
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Shoufeng, Hualien, 97401, Taiwan
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19
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Pardeshi R, Bolshette N, Gadhave K, Ahire A, Ahmed S, Cassano T, Gupta VB, Lahkar M. Insulin signaling: An opportunistic target to minify the risk of Alzheimer's disease. Psychoneuroendocrinology 2017. [PMID: 28624654 DOI: 10.1016/j.psyneuen.2017.05.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Alzheimer's disease (AD) is progressive neurodegenerative disorder characterized by accumulation of senile plaques, neurofibrillary tangles (NFT) and neurodegeneration. The diabetes mellitus (DM) is one of the risk factors for AD pathogenesis by impairment in insulin signaling and glucose metabolism in central as well as peripheral system. Insulin resistance, impaired glucose and lipid metabolism are leading to the Aβ (Aβ) aggregation, Tau phosphorylation, mitochondrial dysfunction, oxidative stress, protein misfolding, memory impairment and also mark over Aβ transport through central to peripheral and vice versa. Several pathways, like enzymatic degradation of Aβ, forkhead box protein O1 (FOXO) signaling, insulin signaling shared common pathological mechanism for both AD and DM. Recent evidence showed that hyperinsulinemia and hyperglycemia affect the onset and progression of AD differently. Some researchers have suggested that hyperglycemia influences vascular tone, while hyperinsulinemia may underlie mitochondrial deficit. The objective of this review is to determine whether existing evidence supports the concept that impairment in insulin signaling and glucose metabolism play an important role in pathogenesis of AD. In the first part of this review, we tried to explain the interconnecting link between AD and DM, whereas the second part includes more information on insulin resistance and its involvement in AD pathogenesis. In the final part of this review, we have focused more toward the AD treatment by targeting insulin signaling like anti-diabetic, antioxidant, nutraceuticals and dietary supplements. To date, more researches should be done in this field in order to explore the pathways in insulin signaling, which might ameliorate the treatment options and reduce the risk of AD due to DM.
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Affiliation(s)
- Rohit Pardeshi
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Gauhati Medical College, Guwahati 781032, Assam, India
| | - Nityanand Bolshette
- Institutional Level Biotech hub (IBT hub), Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Gauhati Medical College, Guwahati 781032, Assam, India
| | - Kundlik Gadhave
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Gauhati Medical College, Guwahati 781032, Assam, India
| | - Ashutosh Ahire
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Gauhati Medical College, Guwahati 781032, Assam, India
| | - Sahabuddin Ahmed
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Gauhati Medical College, Guwahati 781032, Assam, India
| | - Tommaso Cassano
- Department of Clinical and Experimental Medicine, University of Foggia, Via Luigi Pinto, c/o Ospedali Riuniti, 71122 Foggia, Italy
| | - Veer Bala Gupta
- Centre of Excellence for Alzheimer's Disease Research & Care, School of Medical Sciences, Edith-Cowan University, Joondalup, WA 6027, Australia
| | - Mangala Lahkar
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Gauhati Medical College, Guwahati 781032, Assam, India; Institutional Level Biotech hub (IBT hub), Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Gauhati Medical College, Guwahati 781032, Assam, India; Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Gauhati Medical College, Guwahati 781032, Assam, India.
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20
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Simulated annealing molecular dynamics and ligand-receptor contacts analysis for pharmacophore modeling. Future Med Chem 2017; 9:1141-1159. [PMID: 28722471 DOI: 10.4155/fmc-2017-0061] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
AIM Ligand-based pharmacophore modeling requires long list of inhibitors, while pharmacophores based on single ligand-receptor crystallographic structure can be too restricted or promiscuous. METHODOLOGY This prompted us to combine simulated annealing molecular dynamics (SAMD) with ligand-receptor contacts analysis as means to construct pharmacophore model(s) from single ligand-receptor complex. Ligand-receptor contacts that survive numerous heating-cooling SAMD cycles are considered critical and are used to guide pharmacophore development. RESULTS This methodology was implemented to develop pharmacophores for acetylcholinesterase and protein kinase C-θ. The resulting models were validated by receiver-operating characteristic analysis and in vitro bioassay. Assay identified four new protein kinase C-θ inhibitors among captured hits, two of which exhibited nanomolar potencies. CONCLUSION The results illustrate the ability of the new method to extract valid pharmacophores from single ligand-protein complex.
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21
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Li L. The Molecular Mechanism of Glucagon-Like Peptide-1 Therapy in Alzheimer's Disease, Based on a Mechanistic Target of Rapamycin Pathway. CNS Drugs 2017; 31:535-549. [PMID: 28540646 DOI: 10.1007/s40263-017-0431-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The mechanistic target of rapamycin (mTOR) is an important molecule that connects aging, lifespan, energy balance, glucose and lipid metabolism, and neurodegeneration. Rapamycin exerts effects in numerous biological activities via its target protein, playing a key role in energy balance, regulation of autophagy, extension of lifespan, immunosuppression, and protection against neurodegeneration. There are many similar pathophysiological processes and molecular pathways between Alzheimer's disease (AD) and type 2 diabetes mellitus (T2DM), and pharmacologic agents used to treat T2DM, including glucagon-like peptide-1 (GLP-1) analogs, seem to be beneficial for AD. mTOR mediates the effects of GLP-1 analogs in the treatment of T2DM; hence, I hypothesize that mTOR is a key molecule for mediating the protective effects of GLP-1 for AD.
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Affiliation(s)
- Lin Li
- Key Laboratory of Cellular Physiology, Shanxi Medical University, Taiyuan, Shanxi, China.
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22
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Combining molecular dynamics simulation and ligand-receptor contacts analysis as a new approach for pharmacophore modeling: beta-secretase 1 and check point kinase 1 as case studies. J Comput Aided Mol Des 2016; 30:1149-1163. [PMID: 27722817 DOI: 10.1007/s10822-016-9984-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 10/03/2016] [Indexed: 01/19/2023]
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Palleria C, Leporini C, Maida F, Succurro E, De Sarro G, Arturi F, Russo E. Potential effects of current drug therapies on cognitive impairment in patients with type 2 diabetes. Front Neuroendocrinol 2016; 42:76-92. [PMID: 27521218 DOI: 10.1016/j.yfrne.2016.07.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 07/13/2016] [Accepted: 07/22/2016] [Indexed: 02/07/2023]
Abstract
Type 2 diabetes mellitus is a complex metabolic disease that can cause serious damage to various organs. Among the best-known complications, an important role is played by cognitive impairment. Impairment of cognitive functioning has been reported both in type 1 and 2 diabetes mellitus. While this comorbidity has long been known, no major advances have been achieved in clinical research; it is clear that appropriate control of blood glucose levels represents the best current (although unsatisfactory) approach in the prevention of cognitive impairment. We have focused our attention on the possible effect on the brain of antidiabetic drugs, despite their effects on blood glucose levels, giving a brief rationale on the mechanisms (e.g. GLP-1, BDNF, ghrelin) that might be involved. Indeed, GLP-1 agonists are currently clinically studied in other neurodegenerative diseases (i.e. Parkinson's and Alzheimer's disease); furthermore, also other antidiabetic drugs have proven efficacy in preclinical studies. Overall, promising results are already available and finding new intervention strategies represents a current need in this field of research.
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Affiliation(s)
- Caterina Palleria
- Science of Health Department, School of Medicine, University "Magna Graecia" of Catanzaro, Italy
| | - Christian Leporini
- Science of Health Department, School of Medicine, University "Magna Graecia" of Catanzaro, Italy
| | - Francesca Maida
- Science of Health Department, School of Medicine, University "Magna Graecia" of Catanzaro, Italy
| | - Elena Succurro
- Department of Medical and Surgical Sciences, Internal Medicine Unit of "Mater Domini", University Hospital, University "Magna Graecia" of Catanzaro, Policlinico "Mater Domini", Campus Universitario, Viale Europa, 88100 Catanzaro, Italy
| | - Giovambattista De Sarro
- Science of Health Department, School of Medicine, University "Magna Graecia" of Catanzaro, Italy
| | - Franco Arturi
- Department of Medical and Surgical Sciences, Internal Medicine Unit of "Mater Domini", University Hospital, University "Magna Graecia" of Catanzaro, Policlinico "Mater Domini", Campus Universitario, Viale Europa, 88100 Catanzaro, Italy
| | - Emilio Russo
- Science of Health Department, School of Medicine, University "Magna Graecia" of Catanzaro, Italy.
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Lu ZK, Li M, McGee K, Phillips CM, Yuan J, Sutton SS. The impact of dementia on antidiabetic drug use in Medicare beneficiaries with diabetes: findings post-Medicare part D. J Comp Eff Res 2016; 5:383-92. [PMID: 27302883 DOI: 10.2217/cer-2015-0006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM The objectives of the study were to measure the utilization rates of antidiabetic drugs in diabetic patients with dementia and to assess the impact of dementia on antidiabetic drug use. MATERIALS & METHODS This study was a pooled cross-sectional study of the Medicare Current Beneficiaries Survey from 2006 to 2010. RESULTS & CONCLUSION Lower utilizations of biguanides, DPP-4 inhibitors and thiazolidinediones were observed in dementia patients. The likelihood of using antidiabetic drugs was about 30% (odds ratio: 0.69; 95% CI: 0.56-0.84) lower in dementia patients and 40% (odds ratio: 0.61; 95% CI: 0.44-0.84) lower in patients with Alzheimer's disease. Healthcare providers should be aware of underuse of antidiabetic drugs in patients with dementia.
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Affiliation(s)
- Z Kevin Lu
- Department of Clinical Pharmacy & Outcomes Sciences, South Carolina College of Pharmacy, University of South Carolina, 715 Sumter Street, Columbia, SC 29208, USA
| | - Minghui Li
- Department of Clinical Pharmacy & Outcomes Sciences, South Carolina College of Pharmacy, University of South Carolina, 715 Sumter Street, Columbia, SC 29208, USA
| | - Karen McGee
- Department of Clinical Pharmacy & Outcomes Sciences, South Carolina College of Pharmacy, University of South Carolina, 715 Sumter Street, Columbia, SC 29208, USA
| | - Cynthia M Phillips
- Department of Clinical Pharmacy & Outcomes Sciences, South Carolina College of Pharmacy, University of South Carolina, 715 Sumter Street, Columbia, SC 29208, USA
| | - Jing Yuan
- Department of Clinical Pharmacy & Outcomes Sciences, South Carolina College of Pharmacy, University of South Carolina, 715 Sumter Street, Columbia, SC 29208, USA
| | - S Scott Sutton
- Department of Clinical Pharmacy & Outcomes Sciences, South Carolina College of Pharmacy, University of South Carolina, 715 Sumter Street, Columbia, SC 29208, USA
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Tricarico D, Selvaggi M, Passantino G, De Palo P, Dario C, Centoducati P, Tateo A, Curci A, Maqoud F, Mele A, Camerino GM, Liantonio A, Imbrici P, Zizzo N. ATP Sensitive Potassium Channels in the Skeletal Muscle Function: Involvement of the KCNJ11(Kir6.2) Gene in the Determination of Mechanical Warner Bratzer Shear Force. Front Physiol 2016; 7:167. [PMID: 27242541 PMCID: PMC4862255 DOI: 10.3389/fphys.2016.00167] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 04/25/2016] [Indexed: 12/25/2022] Open
Abstract
The ATP-sensitive K+-channels (KATP) are distributed in the tissues coupling metabolism with K+ ions efflux. KATP subunits are encoded by KCNJ8 (Kir6.1), KCNJ11 (Kir6.2), ABCC8 (SUR1), and ABCC9 (SUR2) genes, alternative RNA splicing give rise to SUR variants that confer distinct physiological properties on the channel. An high expression/activity of the sarco-KATP channel is observed in various rat fast-twitch muscles, characterized by elevated muscle strength, while a low expression/activity is observed in the slow-twitch muscles characterized by reduced strength and frailty. Down-regulation of the KATP subunits of fast-twitch fibers is found in conditions characterized by weakness and frailty. KCNJ11 gene knockout mice have reduced glycogen, lean phenotype, lower body fat, and weakness. KATP channel is also a sensor of muscle atrophy. The KCNJ11 gene is located on BTA15, close to a QTL for meat tenderness, it has also a role in glycogen storage, a key mechanism of the postmortem transformation of muscle into meat. The role of KCNJ11 gene in muscle function may underlie an effect of KCNJ11 genotypes on meat tenderness, as recently reported. The fiber phenotype and genotype are important in livestock production science. Quantitative traits including meat production and quality are influenced both by environment and genes. Molecular markers can play an important role in the genetic improvement of animals through breeding strategies. Many factors influence the muscle Warner-Bratzler shear force including breed, age, feeding, the biochemical, and functional parameters. The role of KCNJ11gene and related genes on muscle tenderness will be discussed in the present review.
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Affiliation(s)
- Domenico Tricarico
- Department of Pharmacy-Drug Science, University of Bari Aldo Moro Bari, Italy
| | - Maria Selvaggi
- Section of Veterinary Science and Animal Production, Department of Emergency and Organ Transplantation (DETO), University of Bari Aldo Moro Valenzano, Italy
| | | | - Pasquale De Palo
- Department of Veterinary Medicine, University of Bari Aldo Moro Bari, Italy
| | - Cataldo Dario
- Section of Veterinary Science and Animal Production, Department of Emergency and Organ Transplantation (DETO), University of Bari Aldo Moro Valenzano, Italy
| | | | - Alessandra Tateo
- Department of Veterinary Medicine, University of Bari Aldo Moro Bari, Italy
| | - Angela Curci
- Department of Pharmacy-Drug Science, University of Bari Aldo Moro Bari, Italy
| | - Fatima Maqoud
- Department of Pharmacy-Drug Science, University of Bari Aldo MoroBari, Italy; Faculty of Science, Chouaib Doukkali UniversityEl Jadida, Morocco
| | - Antonietta Mele
- Department of Pharmacy-Drug Science, University of Bari Aldo Moro Bari, Italy
| | - Giulia M Camerino
- Department of Pharmacy-Drug Science, University of Bari Aldo Moro Bari, Italy
| | - Antonella Liantonio
- Department of Pharmacy-Drug Science, University of Bari Aldo Moro Bari, Italy
| | - Paola Imbrici
- Department of Pharmacy-Drug Science, University of Bari Aldo Moro Bari, Italy
| | - Nicola Zizzo
- Department of Veterinary Medicine, University of Bari Aldo Moro Bari, Italy
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Aboalhaija NH, Zihlif MA, Taha MO. Discovery of new selective cytotoxic agents against Bcl-2 expressing cancer cells using ligand-based modeling. Chem Biol Interact 2016; 250:12-26. [PMID: 26954606 DOI: 10.1016/j.cbi.2016.03.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 02/28/2016] [Accepted: 03/02/2016] [Indexed: 12/11/2022]
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Wang L, Chen L, Yu M, Xu LH, Cheng B, Lin YS, Gu Q, He XH, Xu J. Discovering new mTOR inhibitors for cancer treatment through virtual screening methods and in vitro assays. Sci Rep 2016; 6:18987. [PMID: 26732172 PMCID: PMC4702177 DOI: 10.1038/srep18987] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 11/27/2015] [Indexed: 12/31/2022] Open
Abstract
Mammalian target of rapamycin (mTOR) is an attractive target for new anticancer drug development. We recently developed in silico models to distinguish mTOR inhibitors and non-inhibitors. In this study, we developed an integrated strategy for identifying new mTOR inhibitors using cascaded in silico screening models. With this strategy, fifteen new mTOR kinase inhibitors including four compounds with IC50 values below 10 μM were discovered. In particular, compound 17 exhibited potent anticancer activities against four tumor cell lines, including MCF-7, HeLa, MGC-803, and C6, with IC50 values of 1.90, 2.74, 3.50 and 11.05 μM. Furthermore, cellular studies and western blot analyses revealed that 17 induces cell death via apoptosis by targeting both mTORC1 and mTORC2 within cells and arrests the cell cycle of HeLa at the G1/G0-phase. Finally, multi-nanosecond explicit solvent simulations and MM/GBSA analyses were carried out to study the inhibitory mechanisms of 13, 17, and 40 for mTOR. The potent compounds presented here are worthy of further investigation.
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Affiliation(s)
- Ling Wang
- Research Center for Drug Discovery &Institute of Human Virology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China.,Pre-Incubator for Innovative Drugs &Medicine, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Lei Chen
- Research Center for Drug Discovery &Institute of Human Virology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Miao Yu
- Research Center for Drug Discovery &Institute of Human Virology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Li-Hui Xu
- Department of Cell Biology, Jinan University, Guangzhou, 510632, China
| | - Bao Cheng
- Research Center for Drug Discovery &Institute of Human Virology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Yong-Sheng Lin
- Research Center for Drug Discovery &Institute of Human Virology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Qiong Gu
- Research Center for Drug Discovery &Institute of Human Virology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Xian-Hui He
- Department of Immunobiology, Jinan University, Guangzhou, 510632, China
| | - Jun Xu
- Research Center for Drug Discovery &Institute of Human Virology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
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Setti A, Kumar MJV, Babu KR, Rasagna A, Prasanna MGRD, Devi TAP, Pawar SC. Potency and pharmacokinetics of broad spectrum and isoform-specific p110γ and δ inhibitors in cancers. J Recept Signal Transduct Res 2015; 36:26-36. [PMID: 26791581 DOI: 10.3109/10799893.2014.1003658] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Emerging data on cancer suggesting that target-based therapy is promising strategy in cancer treatment. PI3K-AKT pathway is extensively studied in many cancers; several inhibitors target this pathway in different levels. Recent finding on this pathway uncovered the therapeutic applications of PI3K-specific inhibitors; PI3K, AKT, and mTORC broad spectrum inhibitors. Noticeably, class I PI3K isoforms, p110γ and p110δ catalytic subunits have rational therapeutic application than other isoforms. Therefore, three classes of inhibitors: isoform-specific, dual-specific and broad spectrum were selected for molecular docking and dynamics. First, p110δ structure was modelled; active site was analyzed. Then, molecular docking of each class of inhibitors were studied; the docked complexes were further used in 1.2 ns molecular dynamics simulation to report the potency of each class of inhibitor. Remarkably, both the studies retained the similar kind of protein ligand interactions. GDC-0941, XL-147 (broad spectrum); TG100-115 (dual-specific); and AS-252424, PIK-294 (isoform-specific) were found to be potential inhibitors of p110γ and p110δ, respectively. In addition to that pharmacokinetic properties are within recommended ranges. Finally, molecular phylogeny revealed that p110γ and p110δ are evolutionarily divergent; they probably need separate strategies for drug development.
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Affiliation(s)
- Aravind Setti
- a Department of Genetics & Biotechnology , Osmania University , Hyderabad , Andhra Pradesh , India .,b Param Bioinformatics , Hyderabad , Andhra Pradesh , India .,c VAC Biotechnologies , Hyderabad , Andhra Pradesh , India
| | - M J Vijay Kumar
- a Department of Genetics & Biotechnology , Osmania University , Hyderabad , Andhra Pradesh , India .,c VAC Biotechnologies , Hyderabad , Andhra Pradesh , India
| | - K Ravi Babu
- d Department of Biochemistry , Indian Institute of Science , Bangalore , Karnataka , India , and
| | - A Rasagna
- a Department of Genetics & Biotechnology , Osmania University , Hyderabad , Andhra Pradesh , India
| | - M G R Devi Prasanna
- a Department of Genetics & Biotechnology , Osmania University , Hyderabad , Andhra Pradesh , India
| | - T A Phazna Devi
- e Microbial Resources Division , Institute of Bioresources & Sustainable Development , Imphal , Manipur , India
| | - Smita C Pawar
- a Department of Genetics & Biotechnology , Osmania University , Hyderabad , Andhra Pradesh , India
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29
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Sandhir R, Gupta S. Molecular and biochemical trajectories from diabetes to Alzheimer’s disease: A critical appraisal. World J Diabetes 2015; 6:1223-1242. [PMID: 26464760 PMCID: PMC4598605 DOI: 10.4239/wjd.v6.i12.1223] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 07/25/2015] [Accepted: 09/08/2015] [Indexed: 02/05/2023] Open
Abstract
Diabetes mellitus (DM), a metabolic disorder is a major orchestra influencing brain and behavioral responses via direct or indirect mechanisms. Many lines of evidence suggest that diabetic patients apparently face severe brain complications, but the story is far from being fully understood. Type 2 diabetes, an ever increasing epidemic and its chronic brain complications are implicated in the development of Alzheimer’s disease (AD). Evidences from clinical and experimental studies suggest that insulin draws a clear trajectory from the peripheral system to the central nervous system. This review is a spot light on striking pathological, biochemical, molecular and behavioral commonalities of AD and DM. Incidence of cognitive decline in diabetic patients and diabetic symptoms in AD patients has brought the concept of brain diabetes to attention. Brain diabetes reflects insulin resistant brain state with oxidative stress, cognitive impairment, activation of various inflammatory cascade and mitochondrial vulnerability as a shared footprint of AD and DM. It has become extremely important for the investigators to understand the patho-physiology of brain complications in diabetes and put intensive pursuits for therapeutic interventions. Although, decades of research have yielded a range of molecules with potential beneficial effects, but they are yet to meet the expectations.
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Khanfar MA, Bardaweel SK, Akl MR, El Sayed KA. Olive Oil-derived Oleocanthal as Potent Inhibitor of Mammalian Target of Rapamycin: Biological Evaluation and Molecular Modeling Studies. Phytother Res 2015; 29:1776-82. [PMID: 26248874 DOI: 10.1002/ptr.5434] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 07/12/2015] [Accepted: 07/21/2015] [Indexed: 11/08/2022]
Abstract
The established anticancer and neuroprotective properties of oleocanthal combined with the reported role of mammalian target of rapamycin (mTOR) in cancer and Alzheimer's disease development encouraged us to examine the possibility that oleocanthal inhibits mTOR. To validate this hypothesis, we docked oleocanthal into the adenosine triphosphate binding pocket of a close mTOR protein homologue, namely, PI3K-γ. Apparently, oleocanthal shared nine out of ten critical binding interactions with a potent dual PIK3-γ/mTOR natural inhibitor. Subsequent experimental validation indicated that oleocanthal indeed inhibited the enzymatic activity of mTOR with an IC50 value of 708 nM. Oleocanthal inhibits the growth of several breast cancer cell lines at low micromolar concentration in a dose-dependent manner. Oleocanthal treatment caused a marked downregulation of phosphorylated mTOR in metastatic breast cancer cell line (MDA-MB-231). These results strongly indicate that mTOR inhibition is at least one of the factors of the reported anticancer and neuroprotective properties of oleocanthal.
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Affiliation(s)
- Mohammad A Khanfar
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, The University of Jordan, Amman, 11942, Jordan
| | - Sanaa K Bardaweel
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, The University of Jordan, Amman, 11942, Jordan
| | - Mohamed R Akl
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, Louisiana, USA
| | - Khalid A El Sayed
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, Louisiana, USA
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Lakhlili W, Chevé G, Yasri A, Ibrahimi A. Determination and validation of mTOR kinase-domain 3D structure by homology modeling. Onco Targets Ther 2015; 8:1923-30. [PMID: 26257525 PMCID: PMC4525790 DOI: 10.2147/ott.s84200] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The AKT/mammalian target of rapamycin (mTOR) pathway is considered as one of the commonly activated and deregulated signaling pathways in human cancer. mTOR is associated with other proteins in two molecular complexes: mTOR complex 1/Raptor and the mTOR complex 2/Rictor. Using the crystal structure of the related lipid kinase PI3Kγ, we built a model of the catalytic region of mTOR. The modeling of the three-dimensional (3D) structure of the mTOR was performed by homology modeling program SWISS-MODEL. The quality and validation of the obtained model were performed using PROCHECK and PROVE softwares. The overall stereochemical property of the protein was assessed by the Ramachandran plot. The model validation was also done by docking of known inhibitors. In this paper, we describe and validate a 3D model for the mTOR catalytic site.
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Affiliation(s)
- Wiame Lakhlili
- Laboratoire de Biotechnologie (MedBiotech), Faculté de Médecine et de Pharmacie de Rabat, Université Mohammed V de Rabat, Rabat, Morroco
| | - Gwénaël Chevé
- OriBase Pharma, Cap Gamma, Parc Euromédecine, Montpellier, France
| | - Abdelaziz Yasri
- OriBase Pharma, Cap Gamma, Parc Euromédecine, Montpellier, France
| | - Azeddine Ibrahimi
- Laboratoire de Biotechnologie (MedBiotech), Faculté de Médecine et de Pharmacie de Rabat, Université Mohammed V de Rabat, Rabat, Morroco
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Khanfar MA, Quinti L, Wang H, Nobles J, Kazantsev AG, Silverman RB. Design and Evaluation of 3-(Benzylthio)benzamide Derivatives as Potent and Selective SIRT2 Inhibitors. ACS Med Chem Lett 2015; 6:607-11. [PMID: 26005542 DOI: 10.1021/acsmedchemlett.5b00075] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 03/26/2015] [Indexed: 01/06/2023] Open
Abstract
Inhibitors of sirtuin-2 (SIRT2) deacetylase have been shown to be protective in various models of Huntington's disease (HD) by decreasing polyglutamine aggregation, a hallmark of HD pathology. The present study was directed at optimizing the potency of SIRT2 inhibitors containing the 3-(benzylsulfonamido)benzamide scaffold and improving their metabolic stability. Molecular modeling and docking studies revealed an unfavorable role of the sulfonamide moiety for SIRT2 binding. This prompted us to replace the sulfonamide with thioether, sulfoxide, or sulfone groups. The thioether analogues were the most potent SIRT2 inhibitors with a two- to three-fold increase in potency relative to their corresponding sulfonamide analogues. The newly synthesized compounds also demonstrated higher SIRT2 selectivity over SIRT1 and SIRT3. Two thioether-derived compounds (17 and 18) increased α-tubulin acetylation in a dose-dependent manner in at least one neuronal cell line, and 18 was found to inhibit polyglutamine aggregation in PC12 cells.
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Affiliation(s)
- Mohammad A. Khanfar
- Department
of Chemistry, Department of Molecular Biosciences, Chemistry of Life
Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
- Department
of Pharmaceutical Sciences, The University of Jordan, Amman, Jordan
| | - Luisa Quinti
- Department
of Neurology, Harvard Medical School and Massachusetts General Hospital, Charlestown, Massachusetts 02129-4404, United States
| | - Hua Wang
- Department
of Chemistry, Department of Molecular Biosciences, Chemistry of Life
Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Johnathan Nobles
- Department
of Neurology, Harvard Medical School and Massachusetts General Hospital, Charlestown, Massachusetts 02129-4404, United States
| | - Aleksey G. Kazantsev
- Department
of Neurology, Harvard Medical School and Massachusetts General Hospital, Charlestown, Massachusetts 02129-4404, United States
| | - Richard B. Silverman
- Department
of Chemistry, Department of Molecular Biosciences, Chemistry of Life
Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
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Starosyla SA, Volynets GP, Bdzhola VG, Golub AG, Yarmoluk SM. Pharmacophore approaches in protein kinase inhibitors design. World J Pharmacol 2014; 3:162-173. [DOI: 10.5497/wjp.v3.i4.162] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/07/2014] [Accepted: 10/29/2014] [Indexed: 02/06/2023] Open
Abstract
Protein kinases constitute a superfamily of therapeutic targets for a number of human and animal diseases that include more than 500 members accordingly to sequencing data of the human genome. The well characterized nature of protein kinases makes them excellent targets for drug development. Pharmacophore approaches have become one of the major tools in the area of drug discovery. Application of pharmacophore modeling approaches allows reducing of expensive overall cost associated with drug development project. Pharmacophore models are important functional groups of atoms in the proper spatial position for interaction with target protein. Various ligand-based and structure-based methods have been developed for pharmacophore model generation. Despite the successes in pharmacophore models generation these approaches have not reached their full capacity in application for drug discovery. In the following review, we summarize the published data on pharmacophore models for inhibitors of tyrosine protein kinases (EGFR, HER2, VEGFR, JAK2, JAK3, Syk, ZAP-70, Tie2) and inhibitors of serine/threonine kinases (Clk, Dyrk, Chk1, IKK2, CDK1, CDK2, PLK, JNK3, GSK3, mTOR, p38 MAPK, PKB). Here, we have described the achievements of pharmacophore modeling for protein kinase inhibitors, which provide key points for further application of generated pharmacophore hypotheses in virtual screening, de novo design and lead optimization.
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34
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Oleuropein potently inhibits mammalian target of rapamycin: possible involvement of tandem anomeric hyperconjugation–Michael reaction. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1168-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Predicting mTOR inhibitors with a classifier using recursive partitioning and Naïve Bayesian approaches. PLoS One 2014; 9:e95221. [PMID: 24819222 PMCID: PMC4018356 DOI: 10.1371/journal.pone.0095221] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 03/25/2014] [Indexed: 01/31/2023] Open
Abstract
Background Mammalian target of rapamycin (mTOR) is a central controller of cell growth, proliferation, metabolism, and angiogenesis. Thus, there is a great deal of interest in developing clinical drugs based on mTOR. In this paper, in silico models based on multi-scaffolds were developed to predict mTOR inhibitors or non-inhibitors. Methods First 1,264 diverse compounds were collected and categorized as mTOR inhibitors and non-inhibitors. Two methods, recursive partitioning (RP) and naïve Bayesian (NB), were used to build combinatorial classification models of mTOR inhibitors versus non-inhibitors using physicochemical descriptors, fingerprints, and atom center fragments (ACFs). Results A total of 253 models were constructed and the overall predictive accuracies of the best models were more than 90% for both the training set of 964 and the external test set of 300 diverse compounds. The scaffold hopping abilities of the best models were successfully evaluated through predicting 37 new recently published mTOR inhibitors. Compared with the best RP and Bayesian models, the classifier based on ACFs and Bayesian shows comparable or slightly better in performance and scaffold hopping abilities. A web server was developed based on the ACFs and Bayesian method (http://rcdd.sysu.edu.cn/mtor/). This web server can be used to predict whether a compound is an mTOR inhibitor or non-inhibitor online. Conclusion In silico models were constructed to predict mTOR inhibitors using recursive partitioning and naïve Bayesian methods, and a web server (mTOR Predictor) was also developed based on the best model results. Compound prediction or virtual screening can be carried out through our web server. Moreover, the favorable and unfavorable fragments for mTOR inhibitors obtained from Bayesian classifiers will be helpful for lead optimization or the design of new mTOR inhibitors.
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Khanfar MA, Taha MO. Elaborate ligand-based modeling coupled with multiple linear regression and k nearest neighbor QSAR analyses unveiled new nanomolar mTOR inhibitors. J Chem Inf Model 2013; 53:2587-612. [PMID: 24050502 DOI: 10.1021/ci4003798] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The mammalian target of rapamycin (mTOR) has an important role in cell growth, proliferation, and survival. mTOR is frequently hyperactivated in cancer, and therefore, it is a clinically validated target for cancer therapy. In this study, we combined exhaustive pharmacophore modeling and quantitative structure-activity relationship (QSAR) analysis to explore the structural requirements for potent mTOR inhibitors employing 210 known mTOR ligands. Genetic function algorithm (GFA) coupled with k nearest neighbor (kNN) and multiple linear regression (MLR) analyses were employed to build self-consistent and predictive QSAR models based on optimal combinations of pharmacophores and physicochemical descriptors. Successful pharmacophores were complemented with exclusion spheres to optimize their receiver operating characteristic curve (ROC) profiles. Optimal QSAR models and their associated pharmacophore hypotheses were validated by identification and experimental evaluation of several new promising mTOR inhibitory leads retrieved from the National Cancer Institute (NCI) structural database. The most potent hit illustrated an IC50 value of 48 nM.
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Affiliation(s)
- Mohammad A Khanfar
- Drug Discovery Unit, Department of Pharmaceutical Sciences, Faculty of Pharmacy, The University of Jordan , Amman 11942, Jordan
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