1
|
Bashant MM, Mitchell SM, Hart LR, Lebedenko CG, Banerjee IA. In silico studies of interactions of peptide-conjugated cholesterol metabolites and betulinic acid with EGFR, LDR, and N-terminal fragment of CCKA receptors. J Mol Model 2021; 28:16. [PMID: 34961887 DOI: 10.1007/s00894-021-05007-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 12/14/2021] [Indexed: 11/25/2022]
Abstract
In this work, we designed three new ligands by conjugating cholesterol metabolites 3-hydroxy-5-cholestenoic acid (3-HC) and 3-oxo-4-cholestenoic acid (3-OC) and the natural tri-terpenoid betulinic acid with the tumor-targeting peptide YHWYGYTPQNVI. Molecular interactions with the unconjugated peptide and the conjugates were examined with three receptors that are commonly overexpressed in pancreatic adenocarcinoma cells using ligand docking and molecular dynamics. This study demonstrated the utility of the designed conjugates as a valuable scaffold for potentially targeting EGFR and LDLR receptors. Our results indicate that the conjugates showed strong binding affinities and formation of stable complexes with EGFR, while the unconjugated peptide, BT-peptide conjugate, an 3-HC-peptide conjugate showed the formation of fairly stable complexes with LDLR receptor. For EGFR, two receptor kinase domains were explored. Interactions with the N-terminal domain of CCKA-R were relatively weaker. For LDLR, binding occurred in the beta-propeller region. For the N-terminal fragment of CCKA-R, the conjugates induced significant conformational changes in the receptor. The molecular dynamic simulations for 100 ns demonstrate that BT-peptide conjugates and the unconjugated peptide had the highest binding and formed the most stable complexes with EGFR. RMSD and trajectory analyses indicate that these molecules transit to a dynamically stable configuration in most cases within 60 ns. NMA analysis indicated that amongst the conjugates that showed relatively higher interactions with the respective receptors, the highest potential for deformability was seen for the N-terminal-47 amino acid region of the CCKA-R receptor with and the lowest for the LDLR-receptor. Thus, the newly designed compounds may be evaluated in the future toward developing drug delivery materials for targeting tumor cells overexpressing LDLR or EGFR.
Collapse
Affiliation(s)
- Madeline M Bashant
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, NY, 10458, USA
| | - Saige M Mitchell
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, NY, 10458, USA
| | - Lucy R Hart
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, NY, 10458, USA
| | - Charlotta G Lebedenko
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, NY, 10458, USA
| | - Ipsita A Banerjee
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, NY, 10458, USA.
| |
Collapse
|
2
|
Liu H, Huang S. Role of oxysterol-binding protein-related proteins in malignant human tumours. World J Clin Cases 2020; 8:1-10. [PMID: 31970164 PMCID: PMC6962060 DOI: 10.12998/wjcc.v8.i1.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 12/11/2019] [Accepted: 12/13/2019] [Indexed: 02/05/2023] Open
Abstract
The oxysterol-binding protein-related protein (ORP) family is a group of proteins that mediate oxysterol metabolism and bioactivity in cells. ORPs constitute a large family of lipid transfer proteins. Much of the current evidence indicates that certain members of the family of oxysterol-binding proteins (OSBPs) can lead to cancer. Many studies have revealed the putative roles of OSBPs in various cancer types. However, the exact effects and mechanisms of action of members of the OSBP/ORP family in cancer initiation and progression are currently unclear. This review focuses on ORP family members that can accelerate human tumour cell proliferation, migration, and invasion. The mechanisms and functions of various ORPs are introduced in detail. We also attempt to identify the roles of these proteins in malignant tumours with the ultimate aim of determining the exact role of the OSBP/ORP family in human tumour cells.
Collapse
Affiliation(s)
- Hao Liu
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
| | - Shuai Huang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
| |
Collapse
|
3
|
Ahmad F, Sun Q, Patel D, Stommel JM. Cholesterol Metabolism: A Potential Therapeutic Target in Glioblastoma. Cancers (Basel) 2019; 11:cancers11020146. [PMID: 30691162 PMCID: PMC6406281 DOI: 10.3390/cancers11020146] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 01/21/2019] [Accepted: 01/24/2019] [Indexed: 12/11/2022] Open
Abstract
Glioblastoma is a highly lethal adult brain tumor with no effective treatments. In this review, we discuss the potential to target cholesterol metabolism as a new strategy for treating glioblastomas. Twenty percent of cholesterol in the body is in the brain, yet the brain is unique among organs in that it has no access to dietary cholesterol and must synthesize it de novo. This suggests that therapies targeting cholesterol synthesis in brain tumors might render their effects without compromising cell viability in other organs. We will describe cholesterol synthesis and homeostatic feedback pathways in normal brain and brain tumors, as well as various strategies for targeting these pathways for therapeutic intervention.
Collapse
Affiliation(s)
- Fahim Ahmad
- National Institutes of Health, National Cancer Institute, Radiation Oncology Branch, Bethesda, MD 20892, USA.
| | - Qian Sun
- National Institutes of Health, National Cancer Institute, Radiation Oncology Branch, Bethesda, MD 20892, USA.
| | - Deven Patel
- National Institutes of Health, National Cancer Institute, Radiation Oncology Branch, Bethesda, MD 20892, USA.
| | - Jayne M Stommel
- National Institutes of Health, National Cancer Institute, Radiation Oncology Branch, Bethesda, MD 20892, USA.
| |
Collapse
|
4
|
Abstract
Oxysterols are oxygenated derivatives of cholesterol formed in the human body or ingested in the diet. By modulating the activity of many proteins [e.g., liver X receptors (LXRs), oxysterol-binding proteins (OSBPs), some ATP-binding cassette (ABC) transporters], oxysterols can affect many cellular functions and influence various physiological processes (e.g., cholesterol metabolism, membrane fluidity regulation, intracellular signaling pathways). Therefore, the role of oxysterols is also important in pathological conditions (e.g., atherosclerosis, diabetes mellitus type 2, neurodegenerative disorders). Finally, current evidence suggests that oxysterols play a role in malignancies such as breast, prostate, colon, and bile duct cancer. This review summarizes the physiological importance of oxysterols in the human body with a special emphasis on their roles in various tumors.
Collapse
Affiliation(s)
- Alzbeta Kloudova
- Department of Toxicogenomics, National Institute of Public Health, Prague 100 42, Czech Republic; Third Faculty of Medicine, Charles University, Prague 100 00, Czech Republic
| | - F Peter Guengerich
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Pavel Soucek
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Pilsen 323 00, Czech Republic.
| |
Collapse
|
5
|
Taymouri S, Varshosaz J, Hassanzadeh F, Haghjooy Javanmard S, Dana N. Optimisation of processing variables effective on self-assembly of folate targeted Synpronic-based micelles for docetaxel delivery in melanoma cells. IET Nanobiotechnol 2016; 9:306-13. [PMID: 26435285 DOI: 10.1049/iet-nbt.2014.0076] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Polymeric micelles (PMs) were formulated as nano carriers for docetaxel intended for both intravenous administration and improve therapeutic efficacy of the drug. The PMs were formulated using folic acid conjugated Synpronic F127-cholesterol copolymer and were optimised using a 2(3) full factorial design. The effects of different formulation variables were evaluated on the particle size, entrapment efficiency (EE), zeta potential and release efficiency of the micelles. The in vitro cytotoxicity of DTX-loaded FA targeted micelles was studied on B16F10 melanoma cells which over expressed FA receptor. Among the studied single factors, solvent type was the most effective parameter on the EE and release efficiency. Polymer/drug ratio had the most considerable effect on the particle size while, zeta potential was more affected by temperature. Finally, the PMs with polymer/drug ratio of 12 prepared at 25°C by dimethyl sulfoxide as the dialyzing solvent was shown to be the optimum formulation with desirability factor of 84.9%. The optimised formulation exhibited a particle size of 171.3 nm, 99.59% drug EE, zeta potential of -7.80 mV, drug release efficiency of about 70% at 144 h and polydispersity index of 0.32. The MTT assay indicated DTX-loaded FA targeted micelles were significantly more cytotoxic than non-targeted micelles and free drug.
Collapse
Affiliation(s)
- Somayeh Taymouri
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jaleh Varshosaz
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Farshid Hassanzadeh
- Department of Medicinal Chemistry, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Nasim Dana
- Physiology Research Center, Isfahan University of medical sciences, Isfahan, Iran
| |
Collapse
|
6
|
Liu M, Chen Y, Zhang L, Wang Q, Ma X, Li X, Xiang R, Zhu Y, Qin S, Yu Y, Jiang XC, Duan Y, Han J. Regulation of Hepatic Cholesteryl Ester Transfer Protein Expression and Reverse Cholesterol Transport by Inhibition of DNA Topoisomerase II. J Biol Chem 2015; 290:14418-29. [PMID: 25914138 DOI: 10.1074/jbc.m115.643015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Indexed: 11/06/2022] Open
Abstract
Cholesteryl ester transfer protein (CETP) transfers cholesteryl esters from high density lipoprotein to triglyceride-rich lipoproteins. CETP expression can be transcriptionally activated by liver X receptor (LXR). Etoposide and teniposide are DNA topoisomerase II (Topo II) inhibitors. Etoposide has been reported to inhibit atherosclerosis in rabbits with un-fully elucidated mechanisms. In this study we determined if Topo II activity can influence cholesterol metabolism by regulating hepatic CETP expression. Inhibition of Topo II by etoposide, teniposide, or Topo II siRNA increased CETP expression in human hepatic cell line, HepG2 cells, which was associated with increased CETP secretion and mRNA expression. Meanwhile, inhibition of LXR expression by LXR siRNA attenuated induction of CETP expression by etoposide and teniposide. Etoposide and teniposide induced LXRα expression and LXRα/β nuclear translocation while inhibiting expression of receptor interacting protein 140 (RIP140), an LXR co-repressor. In vivo, administration of teniposide moderately reduced serum lipid profiles, induced CETP expression in the liver, and activated reverse cholesterol transport in CETP transgenic mice. Our study demonstrates a novel function of Topo II inhibitors in cholesterol metabolism by activating hepatic CETP expression and reverse cholesterol transport.
Collapse
Affiliation(s)
- Mengyang Liu
- From the State Key Laboratory of Medicinal Chemical Biology, Colleges of Life Sciences and
| | - Yuanli Chen
- From the State Key Laboratory of Medicinal Chemical Biology, Medicine, and Collaborative Innovation Center for Biotherapy, Nankai University, Tianjin 300071, China
| | | | | | | | | | - Rong Xiang
- Medicine, and Collaborative Innovation Center for Biotherapy, Nankai University, Tianjin 300071, China
| | - Yan Zhu
- Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
| | - Shucun Qin
- Taishan Medical University, Taian 271000, China, and
| | - Yang Yu
- Taishan Medical University, Taian 271000, China, and
| | - Xian-cheng Jiang
- State University of New York Downstate Medical Center, New York, New York 11203
| | - Yajun Duan
- From the State Key Laboratory of Medicinal Chemical Biology, Colleges of Life Sciences and Collaborative Innovation Center for Biotherapy, Nankai University, Tianjin 300071, China,
| | - Jihong Han
- From the State Key Laboratory of Medicinal Chemical Biology, Colleges of Life Sciences and Collaborative Innovation Center for Biotherapy, Nankai University, Tianjin 300071, China,
| |
Collapse
|
7
|
Varshosaz J, Taymouri S, Hassanzadeh F, Javanmard SH, Rostami M. Folated synperonic-cholesteryl hemisuccinate polymeric micelles for the targeted delivery of docetaxel in melanoma. Biomed Res Int. 2015;2015:746093. [PMID: 25839040 PMCID: PMC4370104 DOI: 10.1155/2015/746093] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 01/26/2015] [Accepted: 01/26/2015] [Indexed: 02/06/2023]
Abstract
The objective of this study was the synthesis of folic acid- (FA-) targeted polymeric micelles of Synperonic PE/F 127-cholesteryl hemisuccinate (PF127-Chol) for specific delivery of docetaxel (DTX). Targeted or nontargeted micelles loaded with DTX were prepared via dialysis method. The effects of processing variables on the physicochemical properties of targeted micelles were evaluated using a full factorial design. After the optimization of the polymer/drug ratio, the organic solvent type used for the preparation of the micelles, and the temperature of dialyzing medium, the in vitro cytotoxicity and cellular uptake of the optimized micelles were studied on B16F10 melanoma cells by flow cytometry and fluorescent microscopy. The anticancer efficacy of DTX-loaded FA-PF127-Chol was evaluated in mice bearing melanoma tumor. Optimized targeted micelles had the particle size of 171.3 nm, zeta potential of −7.8 mV, PDI of 0.325, and a high encapsulation efficiency that released the drug within 144 h. The MTT assay indicated that targeted micelles carrying DTX were significantly more cytotoxic, had higher cellular uptake, and reduced the tumor volume significantly more than the nontargeted micelles and the free drug. FA-PF127-Chol could be, therefore, a promising biomaterial for tumors overexpressing folate receptors.
Collapse
|
8
|
Xiao X, Chen L, Ouyang Y, Zhu W, Qiu P, Su X, Dou Y, Tang L, Yan M, Zhang H, Yang X, Xu D, Yan G. Pregnenolone, a cholesterol metabolite, induces glioma cell apoptosis via activating extrinsic and intrinsic apoptotic pathways. Oncol Lett 2014; 8:645-650. [PMID: 25013479 PMCID: PMC4081362 DOI: 10.3892/ol.2014.2147] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Accepted: 02/07/2014] [Indexed: 12/31/2022] Open
Abstract
Gliomas are one of the most common types of malignant tumors worldwide, however, an effective therapeutic strategy not yet been fully determined. The present study aimed to investigate the anti-glioma activity and underlying mechanisms of pregnenolone, which originates from cholesterol and is metabolized into important steroid hormones in the body. The results demonstrated that 100 μM pregnenolone induced a significant loss of cell viability in various malignant glioma cell lines. In the U-87 MG, LN-18 and C6 cell lines, the loss of cell viability resulted from cell apoptosis, which was evidenced by apoptotic nuclear morphology changes and caspase 3 activation. Moreover, the increased activities of caspase 8 and 9 strongly indicated that pregnenolone activated the extrinsic and intrinsic pathways of apoptosis. Additionally, glioma cell apoptosis was prevented by the general caspase inhibitor, Z-VAD-FMK. In the C6 cells, upregulation of Fas and Fas ligand triggered the activation of the extrinsic pathway, whereas knockdown of Fas significantly abrogated the cell apoptosis that was induced by pregnenolone. Furthermore, downregulation of the anti-apoptotic protein, B-cell lymphoma 2 and upregulation of pro-apoptotic proteins, such as Bax and Bak, activated the intrinsic pathway. In conclusion, pregnenolone induced glioma cell apoptosis in a caspase-dependent manner, which was mediated by activation of the extrinsic and intrinsic apoptotic pathways.
Collapse
Affiliation(s)
- Xiao Xiao
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Lijun Chen
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Ying Ouyang
- Department of Neonatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Wenbo Zhu
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Pengxin Qiu
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Xinwen Su
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Yunling Dou
- Department of Anesthesiology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Lipeng Tang
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Min Yan
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Haipeng Zhang
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Xiaoxiao Yang
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Dong Xu
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Guangmei Yan
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| |
Collapse
|
9
|
Abstract
Conjugation of cholesterol moiety to active compounds for either cancer treatment or diagnosis is an attractive approach. Cholesterol derivatives are widely studied as cancer diagnostic agents and as anticancer derivatives either in vitro or in vivo using animal models. In largely growing studies, anticancer agents have been chemically conjugated to cholesterol molecules, to enhance their pharmacokinetic behavior, cellular uptake, target specificity, and safety. To efficiently deliver anticancer agents to the target cells and tissues, many different cholesterol-anticancer conjugates were synthesized and characterized, and their anticancer efficiencies were tested in vitro and in vivo.
Collapse
Affiliation(s)
- Awwad A. Radwan
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Fares K. Alanazi
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| |
Collapse
|
10
|
Salvador JAR, Carvalho JFS, Neves MAC, Silvestre SM, Leitão AJ, Silva MMC, Sá e Melo ML. Anticancer steroids: linking natural and semi-synthetic compounds. Nat Prod Rep 2013; 30:324-74. [PMID: 23151898 DOI: 10.1039/c2np20082a] [Citation(s) in RCA: 186] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Steroids, a widespread class of natural organic compounds occurring in animals, plants and fungi, have shown great therapeutic value for a broad array of pathologies. The present overview is focused on the anticancer activity of steroids, which is very representative of a rich structural molecular diversity and ability to interact with various biological targets and pathways. This review encompasses the most relevant discoveries on steroid anticancer drugs and leads through the last decade and comprises 668 references.
Collapse
Affiliation(s)
- Jorge A R Salvador
- Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Coimbra, Polo das Ciências da Saúde, 3000-508, Coimbra, Portugal.
| | | | | | | | | | | | | |
Collapse
|
11
|
Poirot M, Silvente-Poirot S. Cholesterol-5,6-epoxides: Chemistry, biochemistry, metabolic fate and cancer. Biochimie 2013; 95:622-31. [DOI: 10.1016/j.biochi.2012.05.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Accepted: 05/08/2012] [Indexed: 12/02/2022]
|
12
|
Silvente-Poirot S, Poirot M. Cholesterol epoxide hydrolase and cancer. Curr Opin Pharmacol 2012; 12:696-703. [DOI: 10.1016/j.coph.2012.07.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 07/09/2012] [Accepted: 07/11/2012] [Indexed: 10/28/2022]
|
13
|
Affiliation(s)
- Christian Bailly
- Centre de Recherche et Développement, Institut de Recherche Pierre Fabre, Toulouse, France.
| |
Collapse
|
14
|
Ma Y, Dai Z, Zha Z, Gao Y, Yue X. Selective antileukemia effect of stabilized nanohybrid vesicles based on cholesteryl succinyl silane. Biomaterials 2011; 32:9300-7. [DOI: 10.1016/j.biomaterials.2011.08.043] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Accepted: 08/15/2011] [Indexed: 01/15/2023]
|
15
|
Carvalho JFS, Silva MMC, Moreira JN, Simões S, Sá e Melo ML. Sterols as Anticancer Agents: Synthesis of Ring-B Oxygenated Steroids, Cytotoxic Profile, and Comprehensive SAR Analysis. J Med Chem 2010; 53:7632-8. [PMID: 20931970 DOI: 10.1021/jm1007769] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- João F. S. Carvalho
- Center for Pharmaceutical Studies, University of Coimbra, Portugal
- Faculdade de Farmácia, Universidade de Coimbra, 3000-548 Coimbra, Portugal
| | - M. Manuel Cruz Silva
- Center for Pharmaceutical Studies, University of Coimbra, Portugal
- Faculdade de Farmácia, Universidade de Coimbra, 3000-548 Coimbra, Portugal
| | - João N. Moreira
- Center for Neuroscience and Cell Biology, University of Coimbra, Portugal
- Faculdade de Farmácia, Universidade de Coimbra, 3000-548 Coimbra, Portugal
| | - Sérgio Simões
- Center for Neuroscience and Cell Biology, University of Coimbra, Portugal
- Faculdade de Farmácia, Universidade de Coimbra, 3000-548 Coimbra, Portugal
| | - M. Luisa Sá e Melo
- Center for Pharmaceutical Studies, University of Coimbra, Portugal
- Faculdade de Farmácia, Universidade de Coimbra, 3000-548 Coimbra, Portugal
| |
Collapse
|
16
|
Mizushina Y, Zhang J, Pugliese A, Kim SH, Lü J. Anti-cancer gallotannin penta-O-galloyl-beta-D-glucose is a nanomolar inhibitor of select mammalian DNA polymerases. Biochem Pharmacol 2010; 80:1125-32. [PMID: 20599777 DOI: 10.1016/j.bcp.2010.06.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Revised: 06/18/2010] [Accepted: 06/21/2010] [Indexed: 11/16/2022]
Abstract
Penta-1,2,3,4,6-O-galloyl-beta-D-glucose (PGG) has been shown by us and others to inhibit the in vivo growth of human prostate cancer (PCa) xenografts in athymic nude mice and mouse lung cancer allograft in syngenic mice without evident adverse effect on their body weight. We observed a rapid inhibition of DNA synthesis in S-phase cells in PGG-exposed cancer cells and in PGG-treated isolated nuclei. The purpose of the present study was to test the hypothesis that PGG inhibits DNA replicative synthesis through a direct inhibition of one or more DNA polymerases (pols). Using purified pols, we show that PGG exhibited a selective inhibition against the activities of B-family replicative pols (alpha, delta and epsilon) and Y-family (eta, iota and kappa) of bypass synthesis pols, and the inhibitory effect of PGG on pol alpha was the strongest with IC(50) value of 13 nM. PGG also inhibited pol beta, but the potency was an order of magnitude less than against pol alpha. PGG inhibition of pol alpha and kappa activity was non-competitive with respect to the DNA template-primer and the dNTP substrate; whereas it inhibited pol beta competitively. Docking simulation on pol beta, which is the only mammalian pol with solved crystal structure, suggests several favorable interactions with the catalytic pocket/binding site for the incoming dNTP. These results support PGG as a novel inhibitor of select families of mammalian pols by distinct mechanisms, and suggest that the potent pol inhibition may contribute to its anti-cancer efficacy.
Collapse
Affiliation(s)
- Yoshiyuki Mizushina
- Laboratory of Food & Nutritional Sciences, Department of Nutritional Science, Kobe-Gakuin University, Kobe, Japan.
| | | | | | | | | |
Collapse
|
17
|
Matsui Y, Takeuchi T, Kumamoto-Yonezawa Y, Takemura M, Sugawara F, Yoshida H, Mizushina Y. The relationship between the molecular structure of natural acetogenins and their inhibitory activities which affect DNA polymerase, DNA topoisomerase and human cancer cell growth. Exp Ther Med 2010; 1:19-26. [PMID: 23136587 DOI: 10.3892/etm_00000004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Accepted: 03/03/2009] [Indexed: 11/05/2022] Open
Abstract
Acetogenins from the Annonaceous plant are a fatty acid-derived natural product. Chemically synthesized natural acetogenins, such as mucocin (compound 1), jimenezin (compound 2), muconin (compound 4), pyranicin (compound 5) and pyragonicin (compound 6) were investigated. Concomitantly, 19-epi jimenezin (compound 3), 10-epi pyragonicin (compound 7) and a γ-lactone (compound 8), which is estimated to be a biosynthetic precursor of acetogenins, were synthesized and investigated. Compounds 5 and 6 strongly inhibited, and compound 7 moderately inhibited the activities of mammalian DNA polymerases (pols), such as replicative pol α and repair/recombination-related pol β and λ, and also inhibited human DNA topoisomerase (topos) I and II activities. On the other hand, compounds 1-4 and 8 did not influence the activities of any pols and topos. Compound 5 was the strongest inhibitor of the pols and topos tested, and the IC(50) values were 5.0-9.6 μM, respectively. These compounds also suppressed human cancer cell growth with almost the same tendency as the inhibition of pols and topos. Compound 5 was the strongest suppressor of the proliferation of the promyelocytic leukemia cell line, HL-60, in human cancer cell lines tested with an LD(50) value of 9.4 μM, and arrested the cells at G1 phases, indicating that it blocks DNA replication by inhibiting the activity of pols rather than topos. This compound also induced cell apoptosis. The relationship between the three-dimensional molecular structure of acetogenins and these inhibitory activities is discussed. The results suggested that compound 5 is a lead compound of potentially useful cancer chemotherapy agents.
Collapse
Affiliation(s)
- Yuki Matsui
- Laboratory of Food and Nutritional Sciences, Department of Nutritional Science, and
| | | | | | | | | | | | | |
Collapse
|
18
|
Mizushina Y, Motoshima H, Yamaguchi Y, Takeuchi T, Hirano K, Sugawara F, Yoshida H. 3-O-methylfunicone, a selective inhibitor of mammalian Y-family DNA polymerases from an Australian sea salt fungal strain. Mar Drugs 2009; 7:624-39. [PMID: 20098603 PMCID: PMC2810227 DOI: 10.3390/md7040624] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Revised: 11/18/2009] [Accepted: 11/19/2009] [Indexed: 11/16/2022] Open
Abstract
We isolated a pol inhibitor from the cultured mycelia extract of a fungal strain isolated from natural salt from a sea salt pan in Australia, which was identified as 3-O-methylfunicone by spectroscopic analyses. This compound selectively inhibited the activities of mammalian Y-family DNA polymerases (pols) (i.e., pols eta, iota and kappa). Among these pols, human pol kappa activity was most strongly inhibited, with an IC(50) value of 12.5 microM. On the other hand, the compound barely influenced the activities of the other families of mammalian pols, such as A-family (i.e., pol gamma), B-family (i.e., pols alpha, delta and epsilon) or X-family (i.e., pols beta, lambda and terminal deoxynucleotidyl transferase), and showed no effect on the activities of fish pol delta, plant pols, prokaryotic pols and other DNA metabolic enzymes, such as calf primase of pol alpha, human immunodeficiency virus type-1 (HIV-1) reverse transcriptase, human telomerase, T7 RNA polymerase, mouse IMP dehydrogenase (type II), human topoisomerases I and II, T4 polynucleotide kinase or bovine deoxyribonuclease I. This compound also suppressed the growth of two cultured human cancer cell lines, HCT116 (colon carcinoma cells) and HeLa (cervix carcinoma cells), and UV-treated HeLa cells exhibited lower clonogenic survival in the presence of inhibitor.
Collapse
Affiliation(s)
- Yoshiyuki Mizushina
- Laboratory of Food & Nutritional Sciences, Department of Nutritional Science, Kobe-Gakuin University, Nishi-ku, Kobe, Hyogo 651-2180, Japan; E-Mail:
(H.Y.)
- Cooperative Research Center of Life Sciences, Kobe-Gakuin University, Chuo-ku, Kobe, Hyogo 650-8586, Japan
- Author to whom correspondence should be addressed; E-Mail:
; Tel.: +81-78-974-1551 (ext.3232); Fax: +81-78-974-5689
| | - Hirohisa Motoshima
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; E-Mails:
(H.M.);
(Y.Y.);
(T.T.);
(F.S.)
| | - Yasuhiro Yamaguchi
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; E-Mails:
(H.M.);
(Y.Y.);
(T.T.);
(F.S.)
| | - Toshifumi Takeuchi
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; E-Mails:
(H.M.);
(Y.Y.);
(T.T.);
(F.S.)
| | - Ken Hirano
- Nano-bioanalysis Team, Health Technology Research Center, Takamatsu, Kagawa 761-0395 Japan; E-Mail:
(K.H.)
| | - Fumio Sugawara
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; E-Mails:
(H.M.);
(Y.Y.);
(T.T.);
(F.S.)
| | - Hiromi Yoshida
- Laboratory of Food & Nutritional Sciences, Department of Nutritional Science, Kobe-Gakuin University, Nishi-ku, Kobe, Hyogo 651-2180, Japan; E-Mail:
(H.Y.)
- Cooperative Research Center of Life Sciences, Kobe-Gakuin University, Chuo-ku, Kobe, Hyogo 650-8586, Japan
| |
Collapse
|
19
|
Kimura T, Takeuchi T, Kumamoto-Yonezawa Y, Ohashi E, Ohmori H, Masutani C, Hanaoka F, Sugawara F, Yoshida H, Mizushina Y. Penicilliols A and B, novel inhibitors specific to mammalian Y-family DNA polymerases. Bioorg Med Chem 2009; 17:1811-6. [PMID: 19223184 DOI: 10.1016/j.bmc.2009.01.064] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2009] [Revised: 01/25/2009] [Accepted: 01/27/2009] [Indexed: 10/21/2022]
Abstract
Penicilliols A (1) and B (2) are novel 5-methoxy-3(2H)-furanones isolated from cultures of a fungus (Penicillium daleae K.M. Zalessky) derived from a sea moss, and their structures were determined by spectroscopic analyses. These compounds selectively inhibited activities of eukaryotic Y-family DNA polymerases (pols) (i.e., pols eta, iota and kappa), and compound 1 was a stronger inhibitor than compound 2. Among mammalian Y-family pols, mouse pol iota activity was most strongly inhibited by compounds 1 and 2, with IC(50) values of 19.8 and 32.5 microM, respectively. On the other hand, activities of many other pols, such as A-family (i.e., pol gamma), B-family (i.e., pols alpha, delta and epsilon) or X-family (i.e., pols beta, lambda and terminal deoxynucleotidyl transferase), and some DNA metabolic enzymes, such as calf primase of pol alpha, human immunodeficiency virus type-1 (HIV-1) reverse transcriptase, human telomerase, T7 RNA polymerase, mouse IMP dehydrogenase (type II), human topoisomerases I and II, T4 polynucleotide kinase or bovine deoxyribonuclease I, are not influenced by these compounds. In conclusion, this is the first report on potent inhibitors of mammalian Y-family pols.
Collapse
Affiliation(s)
- Takuma Kimura
- Department of Applied Biological Science, Science University of Tokyo, Noda, Chiba, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Díaz-Carballo D, Malak S, Bardenheuer W, Freistuehler M, Peter Reusch H. The contribution of plukenetione A to the anti-tumoral activity of Cuban propolis. Bioorg Med Chem 2008; 16:9635-43. [PMID: 18951805 DOI: 10.1016/j.bmc.2008.10.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2008] [Revised: 10/07/2008] [Accepted: 10/08/2008] [Indexed: 11/16/2022]
Abstract
Increasing efforts are directed toward finding applications for natural products and their derivatives in the treatment of human diseases. Among such products, propolis, a resinous substance produced by honey bees from various plant sources, has been found to be a promising source of potential therapeutics. In the present work, we aimed at studying the perspective of Cuban propolis as a source of possible anti-cancer agents. We found an anti-metastatic effect in mice and considerable cytotoxicity without cross-resistance in both wild-type and chemoresistant human tumor cell lines. Plukenetione A--identified for the first time in Cuban propolis--induced G0/G1 arrest and DNA fragmentation in colon carcinoma cells. Furthermore, the activities of both topoisomerase I and DNA polymerase were inhibited, while the expression of topoisomerase II-beta, EGF receptor, and multidrug resistance-related protein genes was found repressed. We assume that plukenetione A contributes to the anti-tumoral effect of Cuban propolis mainly by targeting topoisomerase I as well as DNA polymerase.
Collapse
Affiliation(s)
- David Díaz-Carballo
- Division of Clinical Pharmacology, Ruhr-University of Bochum, Universitaetsstr. 150, D-44801 Bochum, Germany.
| | | | | | | | | |
Collapse
|