1
|
Al‐Dahmani ZM, Hadian M, Ruiz‐Moreno AJ, Maria SA, Batista FA, Zhang R, Luo Y, Sadremomtaz A, van der Straat R, Spoor M, Dolga AM, Dekker FJ, S S AD, van Goor H, Groves MR. Identification and characterization of a small molecule that activates thiosulfate sulfurtransferase and stimulates mitochondrial respiration. Protein Sci 2023; 32:e4794. [PMID: 37800277 PMCID: PMC10594923 DOI: 10.1002/pro.4794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 09/10/2023] [Accepted: 09/24/2023] [Indexed: 10/07/2023]
Abstract
The enzyme Thiosulfate sulfurtransferase (TST, EC 2.8.1.1), is a positive genetic predictor of diabetes type 2 and obesity. As increased TST activity protects against the development of diabetic symptoms in mice, an activating compound for TST may provide therapeutic benefits in diabetes and obesity. We identified a small molecule activator of human TST through screening of an inhouse small molecule library. Kinetic studies in vitro suggest that two distinct isomers of the compound are required for full activation as well as an allosteric mode of activation. Additionally, we studied the effect of TST protein and the activator on TST activity through mitochondrial respiration. Molecular docking and molecular dynamics (MD) approaches supports an allosteric site for the binding of the activator, which is supported by the lack of activation in the Escherichia coli. mercaptopyruvate sulfurtransferase. Finally, we show that increasing TST activity in isolated mitochondria increases mitochondrial oxygen consumption.
Collapse
Affiliation(s)
- Zeyana M. Al‐Dahmani
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
- Department of Pathology and Medical BiologyUniversity Medical Center GroningenGroningenThe Netherlands
| | - Mojgan Hadian
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | - Angel J. Ruiz‐Moreno
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | | | - Fernando A. Batista
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
- Department of Microbiology StructureInstitute of PasteurParisFrance
| | - Ran Zhang
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | - Yang Luo
- Department of Pathology and Medical BiologyUniversity Medical Center GroningenGroningenThe Netherlands
- Department of Pharmacy, Molecular PharmacologyUniversity of GroningenGroningenThe Netherlands
| | - Afsaneh Sadremomtaz
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
- Department of NanoengineeringUniversity of North Carolina Agriculture and Technical StateGreensboroNorth CarolinaUSA
- Department of NanoengineeringJoint School of Nanoscience and NanoengineeringGreensboroNorth CarolinaUSA
| | - Robin van der Straat
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | - Mette Spoor
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | - Amalia M. Dolga
- Department of Pharmacy, Molecular PharmacologyUniversity of GroningenGroningenThe Netherlands
| | - Frank J. Dekker
- Department of Pharmaceutical Gene ModulationUniversity of GroningenGroningenThe Netherlands
| | - Alexander Dömling S S
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | - Harry van Goor
- Department of Pathology and Medical BiologyUniversity Medical Center GroningenGroningenThe Netherlands
| | - Matthew R. Groves
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| |
Collapse
|
2
|
Sivakumar K, Kannappan S, Vijayakumar B. Docking Studies on Biomolecules from Marine Microalga Skeletonema costatum Against Hemolysin Protein of Bioluminescence Disease-Causing Vibrio harveyi. Curr Microbiol 2023; 80:290. [PMID: 37462776 DOI: 10.1007/s00284-023-03372-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 06/11/2023] [Indexed: 07/21/2023]
Abstract
Grow-out and hatchery units of shrimps are being impacted by disease-causing bacterial pathogens and predominantly marine Vibrios. The use of chemicals for governing bacterial pathogens in the aquaculture practices is developing resistance to bacteria. Henceforth, the application of bio-therapeutic agents from marine resources for controlling pathogens is most vital to be considered. Molecular docking is computer-assisted drug design tool to detect and counteract for drug-receptor interaction for known target protein of diseases. Therefore, an effort was made with the extract of the marine micro alga Skeletonema costatum against hemolysin protein of pathogenic bacteria Vibrio harveyi. The extract of S. costatum was tested against growth and virulence produced by V. harveyi during larviculture of Penaeus monodon. The extract was analyzed for phyto-constituents through GC-MS and used them as ligand molecule in docking. S. costatum extract at 200 µg mL-1 was found to decrease 35.20% of cumulative percentage mortality (CPM) in postlarvae of P. monodon against V. harveyi infections. The biomolecule Docasane, an alkane from the extract of S. costatum, exposed highest binding interaction than other compounds during docking analysis. The level of significance (P < 0.05) was found in CPM, growth, and virulence factors of V. harveyi studies. Thus, the present finding predicts that extract of S. costatum containing biomolecules can be recommended for use in the shrimp culture-based grow-out and hatchery units for eliminating bioluminescent V. harveyi.
Collapse
Affiliation(s)
- Krishnamoorthy Sivakumar
- ICAR - Krishi Vigyan Kendra, Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Kattupakkam, Chennai, Tamil Nadu, 603 203, India.
| | - Sudalayandi Kannappan
- Crustacean Culture Division, ICAR - Central Institute of Brackishwater Aquaculture (CIBA), Chennai, Tamil Nadu, 600 028, India
| | - Balakrishnan Vijayakumar
- Centre of Advance Study in Crystallography and Biophysics, University of Madras, Chennai, Tamil Nadu, 600 025, India
- McArdle Laboratory for Cancer Research, Department of Oncology, School of Medicine and Public Health, University of Wisconsin at Madison, Madison, WI, 53705, USA
- Sao Carlos Institute of Physics (IFSC), University of Sao Paulo, Av. Joao Dagnone, 1100 - Jardim Santa Angelina, Sao Carlos, 13563-120, Brazil
| |
Collapse
|
3
|
Akbar S, Subhan F, Akbar A, Habib F, Shahbaz N, Ahmad A, Wadood A, Salman S. Targeting Anti-Inflammatory Pathways to Treat Diabetes-Induced Neuropathy by 6-Hydroxyflavanone. Nutrients 2023; 15:nu15112552. [PMID: 37299516 DOI: 10.3390/nu15112552] [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: 04/12/2023] [Revised: 05/12/2023] [Accepted: 05/14/2023] [Indexed: 06/12/2023] Open
Abstract
It is evident that inflammation and metabolic syndrome instigated by diabetes mellitus can precipitate diabetes-induced neuropathy (DIN) and pain. In order to find an effective therapeutic method for diabetes-related problems, a multi-target-directed ligand model was used. 6-Hydroxyflavanone (6-HF) carrying anti-inflammatory and anti-neuropathic pain potential due to its quadruplicate mechanisms, targeting cyclooxygenase-2 (COX-2), 5-lipoxygenase (5-LOX), and opioid and GABA-A receptors was investigated. The anti-inflammatory potential of the test drug was confirmed utilizing in silico, in vitro, and in vivo tests. A molecular simulation approach was utilized to observe the interaction of 6-HF with the inflammatory enzyme COX-2 as well as opioid and GABA-A receptors. The same was confirmed via in vitro COX-2 and 5-LOX inhibitory assays. In vivo tests were performed to analyze the thermal anti-nociception in the hot-plate analgesiometer and anti-inflammatory action in the carrageenan-induced paw edema model in rodents. The potential anti-nociceptive effect of 6-HF was evaluated in the DIN model in rats. The Naloxone and Pentylenetetrazole (PTZ) antagonists were used to confirm the underlying mechanism of 6-HF. The molecular modeling studies revealed a favorable interaction of 6-HF with the identified protein molecules. In vitro inhibitory studies revealed that 6-HF inhibited the COX-2 and 5-LOX enzymes significantly. The 6-HF at dosages of 15, 30, and 60 mg/kg substantially reduced heat nociception in a hot plate analgesiometer as well as carrageenan-induced paw edema in rodent models. The authors discovered that 6-HF had anti-nociception properties in a streptozotocin-induced diabetic neuropathy model. According to the findings of this study, 6-HF was demonstrated to diminish inflammation caused by diabetes as well as its anti-nociception effect in DIN.
Collapse
Affiliation(s)
- Shehla Akbar
- Department of Pharmacy, CECOS University of IT and Emerging Sciences, Peshawar 25000, Pakistan
| | - Fazal Subhan
- Department of Pharmacy, CECOS University of IT and Emerging Sciences, Peshawar 25000, Pakistan
| | - Aroosha Akbar
- North West Institute of Health Sciences, Peshawar 25000, Pakistan
| | - Faiza Habib
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar 25000, Pakistan
| | - Naila Shahbaz
- Department of Pharmacy, Sarhad University of Science and Technology, Peshawar 25000, Pakistan
| | - Ashfaq Ahmad
- Department of Pharmacy, Sarhad University of Science and Technology, Peshawar 25000, Pakistan
| | - Abdul Wadood
- Department of Biochemistry, Shankar Abdul Wali Khan University, Mardan 23200, Pakistan
| | - Saad Salman
- Department of Pharmacy, CECOS University of IT and Emerging Sciences, Peshawar 25000, Pakistan
| |
Collapse
|
4
|
Md Idris MH, Mohd Amin SN, Mohd Amin SN, Wibowo A, Zakaria ZA, Shaameri Z, Hamzah AS, Selvaraj M, Teh LK, Salleh MZ. Discovery of polymethoxyflavones as potential cyclooxygenase-2 (COX-2), 5-lipoxygenase (5-LOX) and phosphodiesterase 4B (PDE4B) inhibitors. J Recept Signal Transduct Res 2021; 42:325-337. [PMID: 34323638 DOI: 10.1080/10799893.2021.1951756] [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: 10/20/2022]
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) are widely prescribed to treat inflammatory-related diseases, pain and fever. However, the prolong use of traditional NSAIDs leads to undesirable side effects such as gastric, ulceration, and renal toxicity due to lack of selectivity toward respective targets for COX-2, 5-LOX, and PDE4B. Thus, targeting multiple sites can reduce these adverse effects of the drugs and increase its potency. A series of methoxyflavones (F1-F5) were synthesized and investigated for their anti-inflammatory properties through molecular docking and inhibition assays. Among these flavones, only F2 exhibited selectivity toward COX-2 (Selectivity Index, SI: 3.90, COX-2 inhibition: 98.96 ± 1.47%) in comparison with celecoxib (SI: 7.54, COX-2 inhibition: 98.20 ± 2.55%). For PDEs, F3 possessed better selectivity to PDE4B (SI: 4.67) than rolipram (SI: 0.78). F5 had the best 5-LOX inhibitory activity among the flavones (33.65 ± 4.74%) but less than zileuton (90.81 ± 0.19%). Docking analysis indicated that the position of methoxy group and the substitution of halogen play role in determining the bioactivities of flavones. Interestingly, F1-F5 displayed favorable pharmacokinetic profiles and acceptable range of toxicity (IC50>70 µM) in cell lines with the exception for F1 (IC50: 16.02 ± 1.165 µM). This study generated valuable insight in designing new anti-inflammatory drug based on flavone scaffold. The newly synthesized flavones can be further developed as future therapeutic agents against inflammation.
Collapse
Affiliation(s)
- Muhd Hanis Md Idris
- Integrative Pharmacogenomics Institute (iPROMISE), Universiti Teknologi MARA (UiTM) Selangor Branch, Puncak Alam Campus, Selangor, Malaysia
| | - Siti Norhidayah Mohd Amin
- Integrative Pharmacogenomics Institute (iPROMISE), Universiti Teknologi MARA (UiTM) Selangor Branch, Puncak Alam Campus, Selangor, Malaysia
| | - Siti Norhidayu Mohd Amin
- Integrative Pharmacogenomics Institute (iPROMISE), Universiti Teknologi MARA (UiTM) Selangor Branch, Puncak Alam Campus, Selangor, Malaysia
| | - Agustono Wibowo
- Faculty of Applied Science, Universiti Teknologi MARA (UiTM) Pahang Branch, Jengka Campus, Pahang, Malaysia
| | - Zainul Amiruddin Zakaria
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia (UPM), Serdang, Malaysia
| | - Zurina Shaameri
- Organic Synthesis Laboratory, Institute of Science (IOS), Universiti Teknologi MARA (UiTM) Selangor Branch, Puncak Alam Campus, Selangor, Malaysia
| | - Ahmad Sazali Hamzah
- Organic Synthesis Laboratory, Institute of Science (IOS), Universiti Teknologi MARA (UiTM) Selangor Branch, Puncak Alam Campus, Selangor, Malaysia
| | - Manikandan Selvaraj
- School of Engineering, Monash University (Malaysia Campus), Bandar Sunway, Malaysia
| | - Lay Kek Teh
- Integrative Pharmacogenomics Institute (iPROMISE), Universiti Teknologi MARA (UiTM) Selangor Branch, Puncak Alam Campus, Selangor, Malaysia
| | - Mohd Zaki Salleh
- Integrative Pharmacogenomics Institute (iPROMISE), Universiti Teknologi MARA (UiTM) Selangor Branch, Puncak Alam Campus, Selangor, Malaysia
| |
Collapse
|
5
|
Khan J, Ali G, Rashid U, Khan R, Jan MS, Ullah R, Ahmad S, Abbasi SW, Khan Khalil AA, Sewell RE. Mechanistic evaluation of a novel cyclohexenone derivative's functionality against nociception and inflammation: An in-vitro, in-vivo and in-silico approach. Eur J Pharmacol 2021; 902:174091. [PMID: 33865830 DOI: 10.1016/j.ejphar.2021.174091] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 03/25/2021] [Accepted: 03/31/2021] [Indexed: 12/18/2022]
Abstract
The synthesis of a novel cyclohexanone derivative (CHD; Ethyl 6-(4-metohxyphenyl)-2-oxo-4-phenylcyclohexe-3-enecarboxylate) was described and the subsequent aim was to perform an in vitro, in vivo and in silico pharmacological evaluation as a putative anti-nociceptive and anti-inflammatory agent in mice. Initial in vitro studies revealed that CHD inhibited both cyclooxygenase-2 (COX-2) and 5-lipoxygenase (5-LOX) enzymes and it also reduced mRNA expression of COX-2 and the pro-inflammatory cytokines TNF-α and IL-1β. It was then shown that CHD dose dependently inhibited chemically induced tonic nociception in the abdominal constriction assay and also phasic thermal nociception (i.e. anti-nociception) in the hot plate and tail immersion tests in comparison with aspirin and tramadol respectively. The thermal test outcomes indicated a possible moderate centrally mediated anti-nociception which, in the case of the hot plate test, was pentylenetetrazole (PTZ) and naloxone reversible, implicating GABAergic and opioidergic mechanisms. CHD was also effective against both the neurogenic and inflammatory mediator phases induced in the formalin test and it also disclosed anti-inflammatory activity against the phlogistic agents, carrageenan, serotonin, histamine and xylene compared with standard drugs in edema volume tests. In silico studies indicated that CHD possessed preferential affinity for GABAA, opioid and COX-2 target sites and this was supported by molecular dynamic simulations where computation of free energy of binding also favored the formation of stable complexes with these sites. These findings suggest that CHD has prospective anti-nociceptive and anti-inflammatory properties, probably mediated through GABAergic and opioidergic interactions supplemented by COX-2 and 5-LOX enzyme inhibition in addition to reducing pro-inflammatory cytokine expression. CHD may therefore possess potentially beneficial therapeutic effectiveness in the management of inflammation and pain.
Collapse
Affiliation(s)
- Jawad Khan
- Department of Pharmacy, University of Peshawar, Peshawar, 25120, Pakistan
| | - Gowhar Ali
- Department of Pharmacy, University of Peshawar, Peshawar, 25120, Pakistan.
| | - Umer Rashid
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Pakistan
| | - Rasool Khan
- Institute of Chemical Sciences, University of Peshawar, 25120, Pakistan
| | - Muhammad Saeed Jan
- Department of Pharmacy, Faculty of Biological Sciences, University of Malakand, Chakdara, 18000 Dir (L), Pakistan
| | - Rahim Ullah
- Department of Pharmacy, University of Peshawar, Peshawar, 25120, Pakistan
| | - Sajjad Ahmad
- Department of Health and Biological Sciences, Abasyn University, Peshawar, 25000, Pakistan
| | - Sumra Wajid Abbasi
- Department of Biological Sciences, National University of Medical Sciences, Rawalpindi, 46000, Pakistan
| | - Atif Ali Khan Khalil
- Department of Biological Sciences, National University of Medical Sciences, Rawalpindi, 46000, Pakistan
| | - RobertD E Sewell
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, CF10 3NB, UK. UK
| |
Collapse
|
6
|
Sivakumar K, Kannappan S, Vijayakumar B, Jithendran KP, Balasubramaniam S, Panigrahi A. Molecular docking study of bio-inhibitors extracted from marine macro-alga Ulva fasciata against hemolysin protein of luminescence disease-causing Vibrio harveyi. Arch Microbiol 2021; 203:4243-4258. [PMID: 34097104 DOI: 10.1007/s00203-021-02408-1] [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: 12/04/2020] [Revised: 05/11/2021] [Accepted: 05/25/2021] [Indexed: 10/21/2022]
Abstract
Shrimp grow-out and hatchery systems are being affected by bacterial disease particularly Vibrios. The use of chemotherapeutic agents in aquaculture practices has to lead to the development of resistance among aquatic bacteria. Thus, health management becomes of major importance in aquaculture. Under this situation, progressing bio-inhibitors from marine resources are most appropriate to be considered against pathogenic bacteria. Molecular docking is an appropriate tool in structural biology and computer-assisted drug design to predict and neutralize a target protein of known diseases. In this study, marine macro-alga Ulva fasciata was aimed at developing inhibitors against luminescence disease-causing pathogenic bacteria Vibrio harveyi. U. fasciata was collected from Thoothukudi, Tamil Nadu, India. Extract of U. fasciata was tested against growth and virulence factors of V. harveyi during Penaeus monodon larviculture. Further U. fasciata extract was subjected to GC-MS analysis to identify the biomolecules. The homology modeling of virulent protein, hemolysin of V. harveyi was designed in this study. Hence, it was aimed for molecular docking against the biomolecules identified from U. fasciata extract. During shrimp larviculture, the extract of U. fasciata (200 μg mL-1) exhibited reduction on Cumulative Percentage of Mortality (32.40%) in postlarvae against challenge of V. harveyi infection. Biomolecule Methyl dehydroabietate had showed highest binding affinity among the compounds was evaluated in molecular docking study. Statistical analysis had revealed significant differences (p < 0.05) in trials. Therefore, it was proved that the bio-inhibitors from U. fasciata will be a better option for controlling luminescence disease-causing V. harveyi in shrimp grow-out practices.
Collapse
Affiliation(s)
- Krishnamoorthy Sivakumar
- ICAR-Krishi Vigyan Kendra, Tamil Nadu Veterinary and Animal Sciences University, Kattupakkam, Chennai, Tamil Nadu, 603203, India. .,Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, Chennai, Tamil Nadu, 600028, India.
| | - Sudalayandi Kannappan
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, Chennai, Tamil Nadu, 600028, India
| | - Balakrishnan Vijayakumar
- Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Chennai, Tamil Nadu, 600025, India.,McArdle Laboratory for Cancer Research, Department of Oncology, School of Medicine and Public Health, University of Wisconsin At Madison, Madison, WI, 53705, USA
| | | | - Sivamani Balasubramaniam
- Genetics and Biotechnology Unit, ICAR-Central Institute of Brackishwater Aquaculture, Chennai, Tamil Nadu, 600028, India
| | - Akshaya Panigrahi
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, Chennai, Tamil Nadu, 600028, India
| |
Collapse
|
7
|
He R, Dantas A, Riabowol K. Histone Acetyltransferases and Stem Cell Identity. Cancers (Basel) 2021; 13:2407. [PMID: 34067525 PMCID: PMC8156521 DOI: 10.3390/cancers13102407] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/02/2021] [Accepted: 05/05/2021] [Indexed: 12/13/2022] Open
Abstract
Acetylation of histones is a key epigenetic modification involved in transcriptional regulation. The addition of acetyl groups to histone tails generally reduces histone-DNA interactions in the nucleosome leading to increased accessibility for transcription factors and core transcriptional machinery to bind their target sequences. There are approximately 30 histone acetyltransferases and their corresponding complexes, each of which affect the expression of a subset of genes. Because cell identity is determined by gene expression profile, it is unsurprising that the HATs responsible for inducing expression of these genes play a crucial role in determining cell fate. Here, we explore the role of HATs in the maintenance and differentiation of various stem cell types. Several HAT complexes have been characterized to play an important role in activating genes that allow stem cells to self-renew. Knockdown or loss of their activity leads to reduced expression and or differentiation while particular HATs drive differentiation towards specific cell fates. In this study we review functions of the HAT complexes active in pluripotent stem cells, hematopoietic stem cells, muscle satellite cells, mesenchymal stem cells, neural stem cells, and cancer stem cells.
Collapse
Affiliation(s)
- Ruicen He
- Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada; (R.H.); (A.D.)
- Department of Molecular Genetics, Temerty School of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Arthur Dantas
- Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada; (R.H.); (A.D.)
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Karl Riabowol
- Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada; (R.H.); (A.D.)
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
| |
Collapse
|
8
|
Saedtler M, Förtig N, Ohlsen K, Faber F, Masota N, Kowalick K, Holzgrabe U, Meinel L. Antibacterial Anacardic Acid Derivatives. ACS Infect Dis 2020; 6:1674-1685. [PMID: 32519844 DOI: 10.1021/acsinfecdis.9b00378] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We report on the antibacterial activity of five phenolic lipids derived from anacardic acid characterized by increasing alkyl chain lengths with 6, 8, 10, 12, or 14 carbon atoms. The compounds were profiled for their physicochemical properties, transport across epithelial monolayers, cytotoxicity, and antibacterial activity as compared to common antibiotics. No cytotoxicity was reported in cell lines of fibroblast, hepatic, colorectal, or renal origin. C10 and C12 significantly increased the survival in a Galleria mellonella model infected with multi-drug-resistant Staphylococcus aureus (MRSA) or vancomycin-resistant Enterococci (VRE) as compared to the untreated control group. Future studies are required to corroborate these findings in relevant animal model systems of infection.
Collapse
Affiliation(s)
- Marco Saedtler
- Institute for Pharmacy and Food Chemistry, Am Hubland, 97074 Würzburg, Germany
| | - Niclas Förtig
- Institute for Pharmacy and Food Chemistry, Am Hubland, 97074 Würzburg, Germany
| | - Knut Ohlsen
- Institute for Molecular Infection Biology (IMIB), Josef-Schneider-Straße 2, 97080 Würzburg, Germany
| | - Franziska Faber
- Institute for Molecular Infection Biology (IMIB), Josef-Schneider-Straße 2, 97080 Würzburg, Germany
| | - Nelson Masota
- Institute for Pharmacy and Food Chemistry, Am Hubland, 97074 Würzburg, Germany
| | - Kristin Kowalick
- Labor LS SE & Co. KG, Mangelsfeld 4-6, 97708 Bad Bocklet, Germany
| | - Ulrike Holzgrabe
- Institute for Pharmacy and Food Chemistry, Am Hubland, 97074 Würzburg, Germany
| | - Lorenz Meinel
- Institute for Pharmacy and Food Chemistry, Am Hubland, 97074 Würzburg, Germany
- Helmholtz Institute for RNA-Based Infection Research (HIRI), Helmholtz Center for Infection Research (HZI), 97080 Würzburg, Germany
| |
Collapse
|
9
|
Sinha S, Manju SL, Doble M. Chalcone-Thiazole Hybrids: Rational Design, Synthesis, and Lead Identification against 5-Lipoxygenase. ACS Med Chem Lett 2019; 10:1415-1422. [PMID: 31620227 DOI: 10.1021/acsmedchemlett.9b00193] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 09/09/2019] [Indexed: 12/16/2022] Open
Abstract
A hybrid pharmacophore approach is used to design and synthesize novel chalcone-thiazole hybrid molecules. Herein, thiazole has been hybridized with chalcone to obtain a new class of 5-LOX inhibitors. In vitro biological evaluation showed that most of the compounds were better 5-LOX inhibitors than the positive control, Zileuton (IC50 = 1.05 ± 0.03 μM). The best compounds in the series, namely, 4k, 4n, and 4v (4k: IC50 = 0.07 ± 0.02 μM, 4n: IC50 = 0.08 ± 0.05 μM, 4v: 0.12 ± 0.04 μM) are found to be 10 times more active than previously reported 2-amino thiazole (2m: IC50 = 0.9 ± 0.1 μM) by us. Further, 4k has redox (noncompetitive) while 4n and 4v act through a competitive inhibition mechanism. SAR indicated that the presence of methoxy/methyl either in the vicinity of chalcone or both thiazole and chalcone contributed to the synergistic inhibitory effect.
Collapse
Affiliation(s)
- Shweta Sinha
- Bioengineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Tamil Nadu 600036, India
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - S. L. Manju
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - Mukesh Doble
- Bioengineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Tamil Nadu 600036, India
| |
Collapse
|
10
|
Huang M, Huang J, Zheng Y, Sun Q. Histone acetyltransferase inhibitors: An overview in synthesis, structure-activity relationship and molecular mechanism. Eur J Med Chem 2019; 178:259-286. [PMID: 31195169 DOI: 10.1016/j.ejmech.2019.05.078] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/28/2019] [Accepted: 05/28/2019] [Indexed: 02/05/2023]
Abstract
Acetylation, a key component in post-translational modification regulated by HATs and HDACs, is relevant to many crucial cellular contexts in organisms. Based on crucial pharmacophore patterns and the structure of targeted proteins, HAT inhibitors are designed and modified for higher affinity and better bioactivity. However, there are still some challenges, such as cell permeability, selectivity, toxicity and synthetic availability, which limit the improvement of HAT inhibitors. So far, only few HAT inhibitors have been approved for commercialization, indicating the urgent need for more successful and effective structure-based drug design and synthetic strategies. Here, we summarized three classes of HAT inhibitors based on their sources and structural scaffolds, emphasizing on their synthetic methods and structure-activity relationships and molecular mechanisms, hoping to facilitate the development and further application of HAT inhibitors.
Collapse
Affiliation(s)
- Mengyuan Huang
- State Key Laboratory of Biotherapy, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Jiangkun Huang
- Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yongcheng Zheng
- State Key Laboratory of Biotherapy, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Qiu Sun
- State Key Laboratory of Biotherapy, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China.
| |
Collapse
|
11
|
Mikulska-Ruminska K, Shrivastava I, Krieger J, Zhang S, Li H, Bayır H, Wenzel SE, VanDemark AP, Kagan VE, Bahar I. Characterization of Differential Dynamics, Specificity, and Allostery of Lipoxygenase Family Members. J Chem Inf Model 2019; 59:2496-2508. [PMID: 30762363 PMCID: PMC6541894 DOI: 10.1021/acs.jcim.9b00006] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Accurate modeling of structural dynamics of proteins and their differentiation across different species can help us understand generic mechanisms of function shared by family members and the molecular basis of the specificity of individual members. We focused here on the family of lipoxygenases, enzymes that catalyze lipid oxidation, the mammalian and bacterial structures of which have been elucidated. We present a systematic method of approach for characterizing the sequence, structure, dynamics, and allosteric signaling properties of these enzymes using a combination of structure-based models and methods and bioinformatics tools applied to a data set of 88 structures. The analysis elucidates the signature dynamics of the lipoxygenase family and its differentiation among members, as well as key sites that enable its adaptation to specific substrate binding and allosteric activity.
Collapse
Affiliation(s)
- Karolina Mikulska-Ruminska
- Institute of Physics, Department of Biophysics and Medical Physics , Nicolaus Copernicus University , 87-100 Torun , Poland
| | | | | | | | | | | | | | | | - Valerian E Kagan
- Laboratory of Navigational Redox Lipidomics , I M Sechenov Moscow State Medical University , Moskva 119146 , Russia
| | - Ivet Bahar
- Mol & Cell Cancer Biology , UPMC Hillman Cancer Center , Pittsburgh , Pennsylvania 15232 , United States
| |
Collapse
|
12
|
Kaur G, Silakari O. Benzimidazole scaffold based hybrid molecules for various inflammatory targets: Synthesis and evaluation. Bioorg Chem 2018; 80:24-35. [DOI: 10.1016/j.bioorg.2018.05.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/16/2018] [Accepted: 05/16/2018] [Indexed: 02/07/2023]
|
13
|
Weigel WK, Dennis TN, Kang AS, Perry JJP, Martin DBC. A Heck-Based Strategy To Generate Anacardic Acids and Related Phenolic Lipids for Isoform-Specific Bioactivity Profiling. Org Lett 2018; 20:6234-6238. [PMID: 30251866 DOI: 10.1021/acs.orglett.8b02705] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A synthetic strategy for phenolic lipids such as anacardic acid and ginkgolic acid derivatives using an efficient and selective redox-relay Heck reaction followed by a stereoselective olefination is reported. This approach controls both the alkene position and stereochemistry, allowing the synthesis of natural and unnatural unsaturated lipids as single isomers. By this strategy, the activities of different anacardic acid and ginkgolic acid derivatives have been examined in a matrix metalloproteinase inhibition assay.
Collapse
|
14
|
Design, synthesis and identification of novel substituted 2-amino thiazole analogues as potential anti-inflammatory agents targeting 5-lipoxygenase. Eur J Med Chem 2018; 158:34-50. [PMID: 30199704 DOI: 10.1016/j.ejmech.2018.08.098] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 08/28/2018] [Accepted: 08/31/2018] [Indexed: 12/25/2022]
Abstract
Human 5-Lipoxygenase (5-LOX) is a key enzyme targeted for asthma and inflammation. Zileuton, the only drug against 5-LOX, was withdrawn from the market due to several problems. In the present study, the performance of rationally designed conjugates of thiazole (2) and thiourea (3) scaffolds from our previously reported 2-amino-4-aryl thiazole (1) is reported. They are synthesized (total 31 derivatives), characterized, and tested against the 5-LOX enzyme in vitro and the mode of action of the most active ones are determined. Compound 2m exhibited an IC50 of 0.9 ± 0.1 μM acting through competitive (non-redox) mechanism, unlike Zileuton, and found to be devoid of radical scavenging properties. Computational studies are in good agreement with the experimental data supporting its mechanism of action. Another lead molecule from the thiourea series (3), 3f, exhibited an IC50 of 1.4 ± 0.1 μM against 5-LOX whose mode of action is redox type (non-competitive). It is promising to note that the activities displayed by both the lead inhibitors, 2m and 3f, are better than the commercial drug, Zileuton (IC50 = 1.5 ± 0.3 μM). These inhibitors could be further developed as drugs against inflammation.
Collapse
|
15
|
Pisco JP, de Chiara C, Pacholarz KJ, Garza-Garcia A, Ogrodowicz RW, Walker PA, Barran PE, Smerdon SJ, de Carvalho LPS. Uncoupling conformational states from activity in an allosteric enzyme. Nat Commun 2017; 8:203. [PMID: 28781362 PMCID: PMC5545217 DOI: 10.1038/s41467-017-00224-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 06/13/2017] [Indexed: 02/07/2023] Open
Abstract
ATP-phosphoribosyltransferase (ATP-PRT) is a hexameric enzyme in conformational equilibrium between an open and seemingly active state and a closed and presumably inhibited form. The structure-function relationship of allosteric regulation in this system is still not fully understood. Here, we develop a screening strategy for modulators of ATP-PRT and identify 3-(2-thienyl)-l-alanine (TIH) as an allosteric activator of this enzyme. Kinetic analysis reveals co-occupancy of the allosteric sites by TIH and l-histidine. Crystallographic and native ion-mobility mass spectrometry data show that the TIH-bound activated form of the enzyme closely resembles the inhibited l-histidine-bound closed conformation, revealing the uncoupling between ATP-PRT open and closed conformations and its functional state. These findings suggest that dynamic processes are responsible for ATP-PRT allosteric regulation and that similar mechanisms might also be found in other enzymes bearing a ferredoxin-like allosteric domain. Active and inactive state ATP-phosphoribosyltransferases (ATP-PRTs) are believed to have different conformations. Here the authors show that in both states, ATP-PRT has a similar structural arrangement, suggesting that dynamic alterations are involved in ATP-PRT regulation by allosteric modulators.
Collapse
Affiliation(s)
- João P Pisco
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Cesira de Chiara
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Kamila J Pacholarz
- Michael Barber Centre for Collaborative Mass Spectrometry, Manchester Institute of Biotechnology & School of Chemistry, University of Manchester, Manchester, M1 7DN, UK
| | - Acely Garza-Garcia
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Roksana W Ogrodowicz
- Structural Biology Science Technology Platform, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Philip A Walker
- Structural Biology Science Technology Platform, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Perdita E Barran
- Michael Barber Centre for Collaborative Mass Spectrometry, Manchester Institute of Biotechnology & School of Chemistry, University of Manchester, Manchester, M1 7DN, UK
| | - Stephen J Smerdon
- Structural Biology of DNA-damage Signalling Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Luiz Pedro S de Carvalho
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK.
| |
Collapse
|
16
|
Boulsourani Z, Katsamakas S, Geromichalos G, Psycharis V, Raptopoulou C, Hadjipavlou-Litina D, Yiannaki E, Dendrinou-Samara C. Synthesis, structure elucidation and biological evaluation of triple bridged dinuclear copper(II) complexes as anticancer and antioxidant/anti-inflammatory agents. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:1026-1040. [DOI: 10.1016/j.msec.2017.03.157] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 03/17/2017] [Accepted: 03/18/2017] [Indexed: 12/25/2022]
|
17
|
Ramanan M, Sinha S, Sudarshan K, Aidhen IS, Doble M. Inhibition of the enzymes in the leukotriene and prostaglandin pathways in inflammation by 3-aryl isocoumarins. Eur J Med Chem 2016; 124:428-434. [DOI: 10.1016/j.ejmech.2016.08.066] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 08/09/2016] [Accepted: 08/29/2016] [Indexed: 12/31/2022]
|
18
|
Eleftheriadis N, Thee SA, Zwinderman MRH, Leus NGJ, Dekker FJ. Activity-Based Probes for 15-Lipoxygenase-1. Angew Chem Int Ed Engl 2016; 55:12300-5. [PMID: 27612308 PMCID: PMC5218545 DOI: 10.1002/anie.201606876] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Indexed: 12/12/2022]
Abstract
Human 15-lipoxygenase-1 (15-LOX-1) plays an important role in several inflammatory lung diseases, such as asthma, COPD, and chronic bronchitis, as well as various CNS diseases, such as Alzheimer's disease, Parkinson's disease, and stroke. Activity-based probes of 15-LOX-1 are required to explore the role of this enzyme further and to enable drug discovery. In this study, we developed a 15-LOX-1 activity-based probe for the efficient activity-based labeling of recombinant 15-LOX-1. 15-LOX-1-dependent labeling in cell lysates and tissue samples was also possible. To mimic the natural substrate of the enzyme, we designed activity-based probes that covalently bind to the active enzyme and include a terminal alkene as a chemical reporter for the bioorthogonal linkage of a detectable functionality through an oxidative Heck reaction. The activity-based labeling of 15-LOX-1 should enable the investigation and identification of this enzyme in complex biological samples, thus opening up completely new opportunities for drug discovery.
Collapse
Affiliation(s)
- Nikolaos Eleftheriadis
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands
| | - Stephanie A Thee
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands
| | - Martijn R H Zwinderman
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands
| | - Niek G J Leus
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands
| | - Frank J Dekker
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands.
| |
Collapse
|
19
|
Eleftheriadis N, Thee SA, Zwinderman MRH, Leus NGJ, Dekker FJ. Activity-Based Probes for 15-Lipoxygenase-1. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606876] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Nikolaos Eleftheriadis
- Department of Chemical and Pharmaceutical Biology; Groningen Research Institute of Pharmacy; University of Groningen; Antonius Deusinglaan 1 9713 AV Groningen The Netherlands
| | - Stephanie A. Thee
- Department of Chemical and Pharmaceutical Biology; Groningen Research Institute of Pharmacy; University of Groningen; Antonius Deusinglaan 1 9713 AV Groningen The Netherlands
| | - Martijn R. H. Zwinderman
- Department of Chemical and Pharmaceutical Biology; Groningen Research Institute of Pharmacy; University of Groningen; Antonius Deusinglaan 1 9713 AV Groningen The Netherlands
| | - Niek G. J. Leus
- Department of Chemical and Pharmaceutical Biology; Groningen Research Institute of Pharmacy; University of Groningen; Antonius Deusinglaan 1 9713 AV Groningen The Netherlands
| | - Frank J. Dekker
- Department of Chemical and Pharmaceutical Biology; Groningen Research Institute of Pharmacy; University of Groningen; Antonius Deusinglaan 1 9713 AV Groningen The Netherlands
| |
Collapse
|
20
|
Sinha S, Sravanthi TV, Yuvaraj S, Manju SL, Doble M. 2-Amino-4-aryl thiazole: a promising scaffold identified as a potent 5-LOX inhibitor. RSC Adv 2016. [DOI: 10.1039/c5ra28187c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Human 5-lipoxygenase (5-LOX) is a target for asthma and allergy treatment. Zileuton is the only marketed drug targeting this enzyme (IC50 ∼ 1 μM). The current study identifies a promising lead molecule which could be improved to match the activity of zileuton.
Collapse
Affiliation(s)
- Shweta Sinha
- Department of Biotechnology
- Indian Institute of Technology
- Madras
- India
- Department of Chemistry
| | - T. V. Sravanthi
- Department of Chemistry
- Vellore Institute of Technology
- Vellore
- India
| | - S. Yuvaraj
- Department of Chemistry
- Vellore Institute of Technology
- Vellore
- India
| | - S. L. Manju
- Department of Chemistry
- Vellore Institute of Technology
- Vellore
- India
| | - Mukesh Doble
- Department of Biotechnology
- Indian Institute of Technology
- Madras
- India
| |
Collapse
|
21
|
|
22
|
Wu X, Wang Y, Liu S, Liu X, Guo L. Microsporols A-C from the Plant Endophytic Fungus Pestalotiopsis microspora. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501001004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Three new ambuic acid derivatives, microsporols A-C (1-3) and the known compound ambuic acid (4), were isolated from the solid-substrate fermentation cultures of the plant endophytic fungus Pestalotiopsis microspora. Their structures were elucidated primarily by NMR experiments. The absolute configurations of the 6,7-diol moiety in 1 and 2 were assigned using the Snatzke's method, whereas that of 3 was deduced by circular dichroism (CD) exciton chirality method. Compounds 1, 3, and 4 showed moderate 5-lipoxygenase (5-LOX) inhibitory effects.
Collapse
Affiliation(s)
- Xianfu Wu
- National Institutes for Food and Drug Control, Beijing 100050, PR China
| | - Yadan Wang
- National Institutes for Food and Drug Control, Beijing 100050, PR China
| | - Shuchun Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Xinzhong Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Liangdong Guo
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100190, PR China
| |
Collapse
|
23
|
Eleftheriadis N, Neochoritis CG, Leus NGJ, van der Wouden PE, Dömling A, Dekker FJ. Rational Development of a Potent 15-Lipoxygenase-1 Inhibitor with in Vitro and ex Vivo Anti-inflammatory Properties. J Med Chem 2015; 58:7850-62. [PMID: 26331552 DOI: 10.1021/acs.jmedchem.5b01121] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Human 15-lipoxygenase-1 (h-15-LOX-1) is a mammalian lipoxygenase and plays an important role in several inflammatory lung diseases such as asthma, COPD, and chronic bronchitis. Novel potent inhibitors of h-15-LOX-1 are required to explore the role of this enzyme further and to enable drug discovery efforts. In this study, we applied an approach in which we screened a fragment collection that is focused on a diverse substitution pattern of nitrogen-containing heterocycles such as indoles, quinolones, pyrazoles, and others. We denoted this approach substitution-oriented fragment screening (SOS) because it focuses on the identification of novel substitution patterns rather than on novel scaffolds. This approach enabled the identification of hits with good potency and clear structure-activity relationships (SAR) for h-1-5-LOX-1 inhibition. Molecular modeling enabled the rationalization of the observed SAR and supported structure-based design for further optimization to obtain inhibitor 14 d that binds with a Ki of 36 nM to the enzyme. In vitro and ex vivo biological evaluations of our best inhibitor demonstrate a significant increase of interleukin-10 (IL-10) gene expression, which indicates its anti-inflammatory properties.
Collapse
Affiliation(s)
- Nikolaos Eleftheriadis
- Department of Pharmaceutical Gene Modulation, ‡Department of Drug Design, Groningen Research Institute of Pharmacy, University of Groningen , Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Constantinos G Neochoritis
- Department of Pharmaceutical Gene Modulation, ‡Department of Drug Design, Groningen Research Institute of Pharmacy, University of Groningen , Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Niek G J Leus
- Department of Pharmaceutical Gene Modulation, ‡Department of Drug Design, Groningen Research Institute of Pharmacy, University of Groningen , Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Petra E van der Wouden
- Department of Pharmaceutical Gene Modulation, ‡Department of Drug Design, Groningen Research Institute of Pharmacy, University of Groningen , Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Alexander Dömling
- Department of Pharmaceutical Gene Modulation, ‡Department of Drug Design, Groningen Research Institute of Pharmacy, University of Groningen , Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Frank J Dekker
- Department of Pharmaceutical Gene Modulation, ‡Department of Drug Design, Groningen Research Institute of Pharmacy, University of Groningen , Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| |
Collapse
|
24
|
Identification of 6-benzyloxysalicylates as a novel class of inhibitors of 15-lipoxygenase-1. Eur J Med Chem 2015; 94:265-75. [PMID: 25771032 DOI: 10.1016/j.ejmech.2015.03.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 03/02/2015] [Accepted: 03/03/2015] [Indexed: 12/16/2022]
Abstract
Lipoxygenases metabolize polyunsaturated fatty acids into signalling molecules such as leukotrienes and lipoxins. 15-lipoxygenase-1 (15-LOX-1) is an important mammalian lipoxygenase and plays a crucial regulatory role in several respiratory diseases such as asthma, COPD and chronic bronchitis. Novel potent and selective inhibitors of 15-LOX-1 are required to explore the role of this enzyme in drug discovery. In this study we describe structure activity relationships for 6-benzyloxysalicylates as inhibitors of human 15-LOX-1. Kinetic analysis suggests competitive inhibition and the binding model of these compounds can be rationalized using molecular modelling studies. The most potent derivative 37a shows a Ki value of 1.7 μM. These structure activity relationships provide a basis to design improved inhibitors and to explore 15-LOX-1 as a drug target.
Collapse
|
25
|
Barry KP, Ngu A, Cohn EF, Cote JM, Burroughs AM, Gerbino JP, Taylor EA. Exploring allosteric activation of LigAB from Sphingobium sp. strain SYK-6 through kinetics, mutagenesis and computational studies. Arch Biochem Biophys 2015; 567:35-45. [PMID: 25562402 DOI: 10.1016/j.abb.2014.12.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Revised: 12/19/2014] [Accepted: 12/22/2014] [Indexed: 12/12/2022]
Abstract
The protocatechuate 4,5-dioxygenase (LigAB) from Sphingobium sp. strain SYK-6 is the defining member of the Type II extradiol dioxygenase superfamily (a.k.a. PCA Dioxygenase Superfamily or PCADSF) and plays a key aromatic ring-opening role in the metabolism of several lignin derived aromatic compounds. In our search for alternate substrates and inhibitors of LigAB, we discovered allosteric rate enhancement in the presence of non-substrate protocatechuate-like aldehydes such as vanillin. LigAB has the broadest substrate utilization profile of all protocatechuate (PCA) 4,5-dioxygenase described in the literature, however, the rate enhancement is only observed with PCA, with vanillin increasing kcat for LigAB by 36%. Computational docking has identified a potential site of allosteric binding near the entrance to the active site. Examination of a multiple sequence alignment reveals that many of the residues contributing to this newly identified allosteric pocket are highly conserved within the LigB family of the PCADSF. Point mutants of Phe103α and Ala18β, two residues located in the putative allosteric pocket, display altered rate enhancement as compared to LigAB-WT, providing support for the computationally identified allosteric binding site. Further investigation of this binding site may provide insight into the mechanism of this never before observed allosteric activation in extradiol dioxygenases.
Collapse
Affiliation(s)
| | - Abraham Ngu
- Department of Chemistry, Wesleyan University, Middletown, CT 06459, USA
| | - Erin Frances Cohn
- Department of Chemistry, Wesleyan University, Middletown, CT 06459, USA
| | - Joy Marie Cote
- Department of Chemistry, Wesleyan University, Middletown, CT 06459, USA
| | - A Maxwell Burroughs
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA
| | | | - Erika Anne Taylor
- Department of Chemistry, Wesleyan University, Middletown, CT 06459, USA.
| |
Collapse
|
26
|
Wisastra R, Dekker FJ. Inflammation, Cancer and Oxidative Lipoxygenase Activity are Intimately Linked. Cancers (Basel) 2014; 6:1500-21. [PMID: 25037020 PMCID: PMC4190552 DOI: 10.3390/cancers6031500] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 06/27/2014] [Accepted: 07/02/2014] [Indexed: 02/06/2023] Open
Abstract
Cancer and inflammation are intimately linked due to specific oxidative processes in the tumor microenvironment. Lipoxygenases are a versatile class of oxidative enzymes involved in arachidonic acid metabolism. An increasing number of arachidonic acid metabolites is being discovered and apart from their classically recognized pro-inflammatory effects, anti-inflammatory effects are also being described in recent years. Interestingly, these lipid mediators are involved in activation of pro-inflammatory signal transduction pathways such as the nuclear factor κB (NF-κB) pathway, which illustrates the intimate link between lipid signaling and transcription factor activation. The identification of the role of arachidonic acid metabolites in several inflammatory diseases led to a significant drug discovery effort around arachidonic acid metabolizing enzymes. However, to date success in this area has been limited. This might be attributed to the lack of selectivity of the developed inhibitors and to a lack of detailed understanding of the functional roles of arachidonic acid metabolites in inflammatory responses and cancer. This calls for a more detailed investigation of the activity of arachidonic acid metabolizing enzymes and development of more selective inhibitors.
Collapse
Affiliation(s)
- Rosalina Wisastra
- Pharmaceutical Gene Modulation, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands.
| | - Frank J Dekker
- Pharmaceutical Gene Modulation, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands.
| |
Collapse
|
27
|
Synthesis, Structure and Properties of Linear Trinuclear Cobalt Cluster with 5-Fluoro-2-hydroxy-benzoic Acid. J CLUST SCI 2014. [DOI: 10.1007/s10876-014-0758-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|