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Katana Z, Sianidou K, Kaiopoulos G, Deligianni F, Tsetsakos S, Kouvatsi A, Sakellari I, Kritis A, Touraki M, Sotiropoulos D, Xagorari A. Molecular and biochemical evaluation of oxidative effects of cord blood CD34+ MPs on hematopoietic cells. Blood Cells Mol Dis 2024; 108:102871. [PMID: 39013336 DOI: 10.1016/j.bcmd.2024.102871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/22/2024] [Accepted: 06/24/2024] [Indexed: 07/18/2024]
Abstract
A graft source for allogeneic hematopoietic stem cell transplantation is umbilical cord blood, which contains umbilical cord blood mononuclear cells (MNCs and mesenchymal stem cells, both an excellent source of extracellular microparticles (MPs). MPs act as cell communication mediators, which are implicated in reactive oxygen species formation or detoxification depending on their origin. Oxidative stress plays a crucial role in both the development of cancer and its treatment by triggering apoptotic mechanisms, in which CD34+ cells are implicated. The aim of this work is to investigate the oxidative stress status and the apoptosis of HL-60 and mononuclear cells isolated from umbilical cord blood (UCB) following a 24- and 48-hour exposure to CD34 + microparticles (CD34 + MPs). The activity of superoxide dismutase, glutathione reductase, and glutathione S-transferase, as well as lipid peroxidation in the cells, were employed as oxidative stress markers. A 24- and 48-hour exposure of leukemic and mononuclear cells to CD34 + -MPs resulted in a statistically significant increase in the antioxidant activity and lipid peroxidation in both cells types. Moreover, CD34 + MPs affect the expression of BCL2 and FAS and related proteins and downregulate the hematopoietic differentiation program in both HL-60 and mononuclear cells. Our results indicate that MPs through activation of antioxidant enzymes in both homozygous and nonhomozygous cells might serve as a means for graft optimization and enhancement.
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Affiliation(s)
- Zoi Katana
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece; Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Kyriaki Sianidou
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece; Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Gregory Kaiopoulos
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece; Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Fani Deligianni
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece; Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Sarantis Tsetsakos
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece
| | - Anastasia Kouvatsi
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioanna Sakellari
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece
| | - Aristeidis Kritis
- Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Maria Touraki
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Damianos Sotiropoulos
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece
| | - Angeliki Xagorari
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece.
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Juras A, Crkvenac Gornik K, Held M, Sestan M, Turudic D, Sapina M, Srsen S, Huljev Frkovic S, Frkovic M, Gagro A, Jelusic M. Association of Glutathione Transferase M1, T1, P1 and A1 Gene Polymorphism and Susceptibility to IgA Vasculitis. Int J Mol Sci 2024; 25:7777. [PMID: 39063019 PMCID: PMC11277070 DOI: 10.3390/ijms25147777] [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: 01/31/2024] [Revised: 07/09/2024] [Accepted: 07/14/2024] [Indexed: 07/28/2024] Open
Abstract
Endothelial cell injury is a hallmark of IgA vasculitis (IgAV), possibly associated with various factors, including oxidative stress. Certain single nucleotide polymorphisms (SNPs) of glutathione S-transferases (GST) genes have been shown to increase susceptibility to oxidative stress. The objective of our study was to evaluate the gene polymorphisms of GSTM1, GSTT1, GSTP1, and GSTA1 in patients with IgAV. DNA was extracted from the blood of 124 children with IgAV and 168 age-matched healthy controls. A higher frequency of the GSTM1 null genotype was observed in patients with gastrointestinal (GI) system involvement compared to those without GI system involvement (51.5% vs. 28.6%, p = 0.011). Additionally, the GSTM1 null genotype was less prevalent (30.8% vs. 69.2%, p = 0.032), while the GSTP1 Val/Val genotype was significantly more prevalent in patients who developed urogenital complications (scrotal swelling) during the course of the disease (60% vs. 40%, p = 0.039). This study is the first to suggest an association between GSTM1 and GSTP1 polymorphisms and various phenotypes observed during the clinical course of IgAV in the pediatric population. However, it was performed on a national and likely single ethnic cohort, too small for definitive conclusions, so larger studies are needed to confirm this association.
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Affiliation(s)
- Ana Juras
- Department of Laboratory Diagnostics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia; (A.J.); (K.C.G.)
| | - Kristina Crkvenac Gornik
- Department of Laboratory Diagnostics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia; (A.J.); (K.C.G.)
| | - Martina Held
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia; (M.H.); (M.S.); (D.T.); (S.H.F.); (M.F.)
| | - Mario Sestan
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia; (M.H.); (M.S.); (D.T.); (S.H.F.); (M.F.)
| | - Daniel Turudic
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia; (M.H.); (M.S.); (D.T.); (S.H.F.); (M.F.)
| | - Matej Sapina
- Department of Paediatrics, University Hospital Centre Osijek, Medical Faculty Osijek, Josip Juraj Strossmayer University of Osijek, 31 000 Osijek, Croatia;
| | - Sasa Srsen
- Department of Paediatrics, University of Split School of Medicine, University Hospital Centre Split, 21 000 Split, Croatia;
| | - Sanda Huljev Frkovic
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia; (M.H.); (M.S.); (D.T.); (S.H.F.); (M.F.)
| | - Marijan Frkovic
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia; (M.H.); (M.S.); (D.T.); (S.H.F.); (M.F.)
| | - Alenka Gagro
- Medical Faculty Osijek, Josip Juraj Strossmayer University of Osijek, 31 000 Osijek, Croatia;
- Department of Paediatrics, Children’s Hospital Zagreb, 10 000 Zagreb, Croatia
| | - Marija Jelusic
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia; (M.H.); (M.S.); (D.T.); (S.H.F.); (M.F.)
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3
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Tian L, Cao M, Cheng H, Wang Y, He C, Shi X, Li T, Li Z. Plasmon-Stimulated Colorimetry Biosensor Array for the Identification of Multiple Metabolites. ACS APPLIED MATERIALS & INTERFACES 2024; 16:6849-6858. [PMID: 38293917 DOI: 10.1021/acsami.3c16561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Rationally designing highly catalytic and stable nanozymes for metabolite monitoring is of great importance because of their huge potential in early disease diagnosis. Herein, a novel nanozyme based on hierarchically structured CuS/ZnS with a highly efficient peroxidase (POD)-mimic capability was developed and synthesized for multiple metabolite determination and recognition via the plasmon-stimulated biosensor array strategy. The designed nanozyme can simultaneously harvest plasmon triggered hot electron-hole pairs and generate photothermal properties, leading to a sharply boosted POD-mimic capability under 808 nm laser irradiation. Interestingly, because of the interaction diversity of the metabolite with POD-like nanomaterials, the unique inhibitory effect of metabolites on the POD-mimic activity could be the signal response as the differentiation. Thus, utilizing TMB as a typical chromogenic substrate in the addition of H2O2, the designed colorimetric biosensor array can produce diverse fingerprints for the three vital metabolisms (cysteine (Cys), ascorbic acid (AA), and glutathione (GSH)), which can be precisely identified by principal component analysis (PCA). Notably, a distinct fingerprint of a single metabolite with different levels and metabolite mixtures is also achieved with a detection limit of 1 μM. Most importantly, cell lysis could be effectively discriminated by the biosensor assay, implying its great potential in clinical diagnosis.
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Affiliation(s)
- Lin Tian
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, PR China
- School of Food (Biology) Engineering, Xuzhou University of Technology, Xuzhou 221018, PR China
| | - Ming Cao
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, PR China
| | - Haorong Cheng
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, PR China
| | - Yanfei Wang
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, PR China
| | - Changchun He
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, PR China
| | - Xinxin Shi
- School of Food (Biology) Engineering, Xuzhou University of Technology, Xuzhou 221018, PR China
| | - Tongxiang Li
- School of Food (Biology) Engineering, Xuzhou University of Technology, Xuzhou 221018, PR China
| | - Zhao Li
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, PR China
- School of Food (Biology) Engineering, Xuzhou University of Technology, Xuzhou 221018, PR China
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Liu J, Du C, Huang W, Lei Y. Injectable smart stimuli-responsive hydrogels: pioneering advancements in biomedical applications. Biomater Sci 2023; 12:8-56. [PMID: 37969066 DOI: 10.1039/d3bm01352a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Hydrogels have established their significance as prominent biomaterials within the realm of biomedical research. However, injectable hydrogels have garnered greater attention compared with their conventional counterparts due to their excellent minimally invasive nature and adaptive behavior post-injection. With the rapid advancement of emerging chemistry and deepened understanding of biological processes, contemporary injectable hydrogels have been endowed with an "intelligent" capacity to respond to various endogenous/exogenous stimuli (such as temperature, pH, light and magnetic field). This innovation has spearheaded revolutionary transformations across fields such as tissue engineering repair, controlled drug delivery, disease-responsive therapies, and beyond. In this review, we comprehensively expound upon the raw materials (including natural and synthetic materials) and injectable principles of these advanced hydrogels, concurrently providing a detailed discussion of the prevalent strategies for conferring stimulus responsiveness. Finally, we elucidate the latest applications of these injectable "smart" stimuli-responsive hydrogels in the biomedical domain, offering insights into their prospects.
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Affiliation(s)
- Jiacheng Liu
- Department of Orthopedics, Orthopedic Laboratory of Chongqing Medical University, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| | - Chengcheng Du
- Department of Orthopedics, Orthopedic Laboratory of Chongqing Medical University, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| | - Wei Huang
- Department of Orthopedics, Orthopedic Laboratory of Chongqing Medical University, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| | - Yiting Lei
- Department of Orthopedics, Orthopedic Laboratory of Chongqing Medical University, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
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Ikeda Y, Fujii J. The Emerging Roles of γ-Glutamyl Peptides Produced by γ-Glutamyltransferase and the Glutathione Synthesis System. Cells 2023; 12:2831. [PMID: 38132151 PMCID: PMC10741565 DOI: 10.3390/cells12242831] [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: 10/24/2023] [Revised: 12/03/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
L-γ-Glutamyl-L-cysteinyl-glycine is commonly referred to as glutathione (GSH); this ubiquitous thiol plays essential roles in animal life. Conjugation and electron donation to enzymes such as glutathione peroxidase (GPX) are prominent functions of GSH. Cellular glutathione balance is robustly maintained via regulated synthesis, which is catalyzed via the coordination of γ-glutamyl-cysteine synthetase (γ-GCS) and glutathione synthetase, as well as by reductive recycling by glutathione reductase. A prevailing short supply of L-cysteine (Cys) tends to limit glutathione synthesis, which leads to the production of various other γ-glutamyl peptides due to the unique enzymatic properties of γ-GCS. Extracellular degradation of glutathione by γ-glutamyltransferase (GGT) is a dominant source of Cys for some cells. GGT catalyzes the hydrolytic removal of the γ-glutamyl group of glutathione or transfers it to amino acids or to dipeptides outside cells. Such processes depend on an abundance of acceptor substrates. However, the physiological roles of extracellularly preserved γ-glutamyl peptides have long been unclear. The identification of γ-glutamyl peptides, such as glutathione, as allosteric modulators of calcium-sensing receptors (CaSRs) could provide insights into the significance of the preservation of γ-glutamyl peptides. It is conceivable that GGT could generate a new class of intercellular messaging molecules in response to extracellular microenvironments.
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Affiliation(s)
- Yoshitaka Ikeda
- Division of Molecular Cell Biology, Department of Biomolecular Sciences, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan
| | - Junichi Fujii
- Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Yamagata University, 2-2-2 Iidanishi, Yamagata City 990-9585, Japan
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Kljun J, Rebernik M, Balsa LM, Kladnik J, Rapuš U, Trobec T, Sepčić K, Frangež R, León IE, Turel I. Exploring pta Alternatives in the Development of Ruthenium-Arene Anticancer Compounds. Molecules 2023; 28:molecules28062499. [PMID: 36985471 PMCID: PMC10058425 DOI: 10.3390/molecules28062499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/24/2023] [Accepted: 03/03/2023] [Indexed: 03/30/2023] Open
Abstract
Organoruthenium pyrithione (1-hydroxypyridine-2-thione) complexes have been shown in our recent studies to be a promising family of compounds for development of new anticancer drugs. The complex [(η6-p-cymene)Ru(pyrithionato)(pta)]PF6 contains phosphine ligand pta (1,3,5-triaza-7-phosphaadamantane) as a functionality that improves the stability of the complex and its aqueous solubility. Here, we report our efforts to find pta alternatives and discover new structural elements to improve the biological properties of ruthenium anticancer drugs. The pta ligand was replaced by a selection of phosphine, phosphite, and arsine ligands to identify new functionalities, leading to improvement in inhibitory potency towards enzyme glutathione S-transferase. In addition, cytotoxicity in breast, bone, and colon cancers was investigated.
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Affiliation(s)
- Jakob Kljun
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Mihaela Rebernik
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Lucía M Balsa
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Blvd. 120 N°1465, La Plata 1900, Argentina
| | - Jerneja Kladnik
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Uroš Rapuš
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Tomaž Trobec
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, SI-1000 Ljubljana, Slovenia
| | - Kristina Sepčić
- Department of Biology, Biotechnical Faculty, University of LjubljanaJamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Robert Frangež
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, SI-1000 Ljubljana, Slovenia
| | - Ignacio E León
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Blvd. 120 N°1465, La Plata 1900, Argentina
| | - Iztok Turel
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
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Takasu S, Ishii Y, Namiki M, Nakamura K, Mitsumoto T, Takimoto N, Nohmi T, Ogawa K. Comprehensive analysis of the general toxicity, genotoxicity, and carcinogenicity of 3-acetyl-2,5-dimethylfuran in male gpt delta rats. Food Chem Toxicol 2023; 172:113544. [PMID: 36464108 DOI: 10.1016/j.fct.2022.113544] [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: 08/02/2022] [Revised: 11/23/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022]
Abstract
The safety of flavoring agents has been evaluated according to classification by chemical structure and using a decision tree approach. The genotoxic potential found in some flavoring agents has highlighted the importance of efficient toxicity studies. We performed a comprehensive toxicity analysis using reporter gene transgenic rats to assess the safety of 3-acetyl-2,5-dimethylfuran (ADF), a flavoring agent exhibiting genotoxic potential in silico and in vitro assays. Male F344 gpt delta rats were given 0, 30, or 300 mg/kg body weight/day ADF by gavage for 13 weeks. In serum biochemistry analyses, triglyceride, total cholesterol, phospholipid, and total protein levels and albumin/globulin ratios were significantly altered in the 30 and 300 mg/kg groups. Histopathologically, nasal cavity toxicity and hepatocellular hypertrophy were observed in the 300 mg/kg group. In the livers of 300 mg/kg group, a significant increase in gpt mutant frequencies were observed along with ADF-specific DNA adduct formation. The number and area of glutathione S-transferase placental form-positive foci were significantly increased in the same group. Thus, ADF affected nasal cavity, liver, and lipid metabolism and showed genotoxicity and possible carcinogenicity in the liver. Overall, our comprehensive toxicity study using gpt delta rats provided insights into the safety evaluation of ADF.
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Affiliation(s)
- Shinji Takasu
- Division of Pathology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
| | - Yuji Ishii
- Division of Pathology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan.
| | - Moeka Namiki
- Division of Pathology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
| | - Kenji Nakamura
- Division of Pathology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
| | - Tatsuya Mitsumoto
- Division of Pathology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
| | - Norifumi Takimoto
- Division of Pathology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan; Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Takehiko Nohmi
- Division of Pathology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
| | - Kumiko Ogawa
- Division of Pathology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
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Kar B, Shanavas S, Nagendra AH, Das U, Roy N, Pete S, Sharma S A, De S, Kumar S K A, Vardhan S, Sahoo SK, Panda D, Shenoy S, Bose B, Paira P. Iridium(III)-Cp*-(imidazo[4,5- f][1,10]phenanthrolin-2-yl)phenol analogues as hypoxia active, GSH-resistant cancer cytoselective and mitochondria-targeting cancer stem cell therapeutic agents. Dalton Trans 2022; 51:5494-5514. [PMID: 35293923 DOI: 10.1039/d2dt00168c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Herein, we have introduced a series of iridium(III)-Cp*-(imidazo[4,5-f][1,10]phenanthrolin-2-yl)phenol complexes via a convenient synthetic methodology, which act as hypoxia active and glutathione-resistant anticancer metallotherapeutics. The [IrIII(Cp*)(L5)(Cl)](PF6) (IrL5) complex exhibited the best cytoselectivity, GSH resistance and hypoxia effectivity in HeLa and Caco-2 cells among the synthesized complexes. IrL5 also exhibited highly cytotoxic effects on the HCT-116 CSC cell line. This complex was localized in the mitochondria and subsequent mitochondrial dysfunction was observed via MMP alteration and ROS generation on colorectal cancer stem cells. Cell cycle analysis also established the potential of this complex in mediating G2/M phase cell cycle arrest.
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Affiliation(s)
- Binoy Kar
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-632014, Tamilnadu, India.
| | - Shanooja Shanavas
- Department Stem Cells and Regenerative Medicine Centre, Institution Yenepoya Research Centre, Yenepoya University, University Road, Derlakatte, Mangalore 575018, Karnataka, India.
| | - Apoorva H Nagendra
- Department Stem Cells and Regenerative Medicine Centre, Institution Yenepoya Research Centre, Yenepoya University, University Road, Derlakatte, Mangalore 575018, Karnataka, India.
| | - Utpal Das
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-632014, Tamilnadu, India.
| | - Nilmadhab Roy
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-632014, Tamilnadu, India.
| | - Sudhindra Pete
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-632014, Tamilnadu, India.
| | - Ajay Sharma S
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-632014, Tamilnadu, India.
| | - Sourav De
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-632014, Tamilnadu, India.
| | - Ashok Kumar S K
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-632014, Tamilnadu, India.
| | - Seshu Vardhan
- Department of Applied Chemistry, S. V. National Institute of Technology (SVNIT), Ichchanath, Surat, Gujrat-395007, India.
| | - Suban K Sahoo
- Department of Applied Chemistry, S. V. National Institute of Technology (SVNIT), Ichchanath, Surat, Gujrat-395007, India.
| | - Debashis Panda
- Department of Basic Sciences and Humanities, Rajiv Gandhi Institute of Petroleum Technology, An Institution of National Importance, Jais, Amethi-229304, Uttar Pradesh, India.
| | - Sudheer Shenoy
- Department Stem Cells and Regenerative Medicine Centre, Institution Yenepoya Research Centre, Yenepoya University, University Road, Derlakatte, Mangalore 575018, Karnataka, India.
| | - Bipasha Bose
- Department Stem Cells and Regenerative Medicine Centre, Institution Yenepoya Research Centre, Yenepoya University, University Road, Derlakatte, Mangalore 575018, Karnataka, India.
| | - Priyankar Paira
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-632014, Tamilnadu, India.
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Takase T, Toyoda T, Kobayashi N, Inoue T, Ishijima T, Abe K, Kinoshita H, Tsuchiya Y, Okada S. Dietary iso-α-acids prevent acetaldehyde-induced liver injury through Nrf2-mediated gene expression. PLoS One 2021; 16:e0246327. [PMID: 33544749 PMCID: PMC7864453 DOI: 10.1371/journal.pone.0246327] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 01/15/2021] [Indexed: 12/28/2022] Open
Abstract
Acetaldehyde is the major toxic metabolite of alcohol (ethanol) and enhances fibrosis of the liver through hepatic stellate cells. Additionally, alcohol administration causes the accumulation of reactive oxygen species (ROS), which induce hepatocyte injury-mediated lipid peroxidation. Iso-α-acids, called isohumulones, are bitter acids in beer. The purpose of this study was to investigate the protective effects of iso-α-acids against alcoholic liver injury in hepatocytes in mice. C57BL/6N mice were fed diets containing isomerized hop extract, which mainly consists of iso-α-acids. After 7 days of feeding, acetaldehyde was administered by a single intraperitoneal injection. The acetaldehyde-induced increases in serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels were suppressed by iso-α-acids intake. Hepatic gene expression analyses showed the upregulation of detoxifying enzyme genes, glutathione-S-transferase (GST) and aldehyde dehydrogenase (ALDH). In vitro, iso-α-acids upregulated the enzymatic activities of GST and ALDH and induced the nuclear translocation of nuclear factor-erythroid-2-related factor 2 (Nfe2l2; Nrf2), a master regulator of antioxidant and detoxifying systems. These results suggest that iso-α-acid intake prevents acetaldehyde-induced liver injury by reducing oxidative stress via Nrf2-mediated gene expression.
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Affiliation(s)
- Takahito Takase
- Research and Development Division, SAPPORO HOLDINGS LTD., Yaizu, Shizioka, Japan
- Fundamental Laboratory, POKKA SAPPORO FOOD & BEVERAGE LTD., Yokohama, Kanagawa, Japan
| | - Tsudoi Toyoda
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Naoyuki Kobayashi
- Research and Development Division, SAPPORO HOLDINGS LTD., Yaizu, Shizioka, Japan
| | - Takashi Inoue
- Research and Development Division, SAPPORO HOLDINGS LTD., Yaizu, Shizioka, Japan
- Fundamental Laboratory, POKKA SAPPORO FOOD & BEVERAGE LTD., Yokohama, Kanagawa, Japan
| | - Tomoko Ishijima
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Keiko Abe
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Hiroshi Kinoshita
- Department of Forensic Medicine, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa, Japan
| | - Youichi Tsuchiya
- Research and Development Division, SAPPORO HOLDINGS LTD., Yaizu, Shizioka, Japan
| | - Shinji Okada
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
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Zhang J, Chi Y, Li S, Gu X, Ye Y. Cloning, homology modeling, heterologous expression and bioinformatic analysis of Ure2pA glutathione S-transferase gene from white rot fungus Trametes gibbosa. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1997157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Jian Zhang
- Department of Forest Protection, School of Forestry, Northeast Forestry University, Harbin, P.R. China
| | - Yujie Chi
- Department of Forest Protection, School of Forestry, Northeast Forestry University, Harbin, P.R. China
| | - Shuxuan Li
- Department of Forest Protection, School of Forestry, Northeast Forestry University, Harbin, P.R. China
| | - Xinzhi Gu
- Department of Forest Protection, School of Forestry, Northeast Forestry University, Harbin, P.R. China
| | - Yi Ye
- Department of Forest Protection, School of Forestry, Northeast Forestry University, Harbin, P.R. China
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11
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Pamidimukkala K, Rani Inala M. Amalgamation of quercetin with anastrozole and capecitabine: A novel combination to treat breast and colon cancers – An in vitro study. J Cancer Res Ther 2021; 19:S93-S105. [PMID: 37147989 DOI: 10.4103/jcrt.jcrt_599_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Context Globally, cancer stands as the principle cause of mortality and immediate attention on its treatment options is required. Natural compounds stay at first priority in encountering novel therapeutics without adverse effects. Aim The aim of the study is to extract flavonol quercetin from leafy vegetables of Anethum graveolens L. and Raphanus sativus L. and find out its potential in combination with drugs used for chemotherapy to reduce the adverse effects of drugs. Settings and Design Observational study. Materials And Methods Column chromatography is used for quercetin extraction and anticancer activity of quercetin + anastrozole and quercetin + capecitabine were determined by (4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl tetrazolium bromide assay (MTT), apoptosis assay, cell cycle analysis, mitochondrial membrane potential, and caspase 3 expression. Statistical Analysis Used Cytotoxic assay results were assessed by mean, standard deviation and ANOVA; and results were compared for determining its significance. Results The results noted that quercetin at very less concentration (16 and 31 μg/ml on Michigan Cancer Foundation-7 and 43 and 46 μg/ml on COLO 320) in combination with anastrozole and capecitabine was able to control the growth of cells, increase cell death, arrest cell cycle, and induce mitochondrial depolarization and expression of caspase 3. Conclusions The natural compound used in the present study is effective in treating breast and colon cancer at minimal concentrations in combination with the drugs. This combinational treatment appears to be reported for the first time in the present study.
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Kalita J, Shukla H, Tripathi T. Engineering glutathione S-transferase with a point mutation at conserved F136 residue increases the xenobiotic-metabolizing activity. Int J Biol Macromol 2020; 163:1117-1126. [PMID: 32663558 DOI: 10.1016/j.ijbiomac.2020.07.073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/30/2020] [Accepted: 07/08/2020] [Indexed: 12/16/2022]
Abstract
Glutathione S-transferases (GSTs) are multifunctional enzymes that play major roles in a wide range of biological processes, including cellular detoxification, biosynthesis, metabolism, and transport. The dynamic structural scaffold and diverse functional roles of GSTs make them important for enzyme engineering and for exploring novel biotechnological applications. The present study reported a significant gain-of-function activity in GST caused by a point mutation at the conserved F136 residue. The fluorescence quenching and kinetic data suggested that both binding affinity and catalytic efficiency of the mutant enzyme to the substrates 1-chloro-2,4-dinitrobenzene (CDNB), as well as the glutathione (GSH), is increased. Molecular docking showed that the mutation improves the binding interactions of the GSH with several binding-site residues. The simulation of molecular dynamics revealed that the mutant enzyme gained increased structural rigidity than the wild-type enzyme. The mutation also altered the residue interaction network (RIN) of the GSH-binding residues. These phenomena suggested that mutations led to conformational alterations and dominant differential motions in the enzyme that lead to increased rigidity and modifications in RIN. Collectively, engineering GST with a single point mutation at conserved F136 can significantly increase its xenobiotic activity by increasing the catalytic efficiency that may be exploited for biotechnological applications.
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Affiliation(s)
- Jupitara Kalita
- Molecular and Structural Biophysics Laboratory, Department of Biochemistry, North-Eastern Hill University, Shillong 793022, India
| | - Harish Shukla
- Molecular and Structural Biophysics Laboratory, Department of Biochemistry, North-Eastern Hill University, Shillong 793022, India
| | - Timir Tripathi
- Molecular and Structural Biophysics Laboratory, Department of Biochemistry, North-Eastern Hill University, Shillong 793022, India.
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Ambad RS, Koundal P, Singh A, Jha RK. Association between Glutathione-S-Transferase and Gastric Carcinoma: A Case Control Study. JOURNAL OF EVOLUTION OF MEDICAL AND DENTAL SCIENCES 2020; 9:2783-2786. [DOI: 10.14260/jemds/2020/606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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14
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Mondal A, Paira P. Hypoxia efficient and glutathione-resistant cytoselective ruthenium(ii)-p-cymene-arylimidazophenanthroline complexes: biomolecular interaction and live cell imaging. Dalton Trans 2020; 49:12865-12878. [DOI: 10.1039/d0dt02069a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A series of ruthenium(ii)–arene-2-arylimidazophenanthroline based DNA targeting, cytoselective, hypoxia efficient and glutathione-resistant luminescent anticancer drugs have been developed which are also represented as HeLa cell imaging probes.
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Affiliation(s)
- Ashaparna Mondal
- Department of Chemistry
- School of advanced sciences
- Vellore Institute of Technology
- Vellore-632014
- India
| | - Priyankar Paira
- Department of Chemistry
- School of advanced sciences
- Vellore Institute of Technology
- Vellore-632014
- India
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15
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Yan C, Duan L, Fu C, Tian C, Zhang B, Shao X, Zhu G. Association Between Glutathione S-Transferase (GST) Polymorphisms and Schizophrenia in a Chinese Han Population. Neuropsychiatr Dis Treat 2020; 16:479-487. [PMID: 32110022 PMCID: PMC7038391 DOI: 10.2147/ndt.s235043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 01/27/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Glutathione S-transferase (GST) is an important antioxidant enzyme in the body. The weakening of the antioxidant system causes damage to the cells and tissues that make up the organism, adversely affects the function of the nervous system, and ultimately leads to schizophrenia (SCZ). Previous studies have yielded inconsistent results across different ethnic populations. PURPOSE This case-control study was carried out to investigate whether genetic polymorphisms in GST could be associated with SCZ in the Chinese Han population. PATIENTS AND METHODS A total of 794 participants, including 379 SCZ patients (case group) and 415 healthy individuals (control group), were genotyped by polymerase chain reaction-restriction fragment length for polymorphisms in GST genes. RESULTS The study found that the frequency of the GSTM1 null genotype was higher in case group than control group (p=0.003). The frequency of the GSTM1 and GSTT1 double null genotype was also higher in case group than control group (p=0.008). CONCLUSION We conclude that the GSTM1 null genotype and the GSTM1 and GSTT1 double null genotype may be related to the onset of SCZ in Chinese Han population.
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Affiliation(s)
- Ci Yan
- Department of Psychiatry, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Li Duan
- Department of Psychiatry, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Chunfeng Fu
- Department of Psychiatry, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Chunsheng Tian
- Department of Psychiatry, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Bihui Zhang
- Department of Psychiatry, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Xiaojun Shao
- Department of Psychiatry, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Gang Zhu
- Department of Psychiatry, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China.,Department of Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
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Reynolds IS, O’Connell E, Fichtner M, McNamara DA, Kay EW, Prehn JHM, Furney SJ, Burke JP. Mucinous adenocarcinoma is a pharmacogenomically distinct subtype of colorectal cancer. THE PHARMACOGENOMICS JOURNAL 2019; 20:524-532. [DOI: 10.1038/s41397-019-0137-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 11/22/2019] [Accepted: 11/26/2019] [Indexed: 02/07/2023]
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17
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Dasari S, Gonuguntla S, Yellanurkonda P, Nagarajan P, Meriga B. Sensitivity of glutathione S-transferases to high doses of acrylamide in albino wistar rats: Affinity purification, biochemical characterization and expression analysis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 182:109416. [PMID: 31301596 DOI: 10.1016/j.ecoenv.2019.109416] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/21/2019] [Accepted: 07/03/2019] [Indexed: 06/10/2023]
Abstract
The main objectives of this study were to purify the glutathione S-transfereses (GSTs) and assess the effect of high doses of acrylamide (ACR) on male albino Wistar rat liver, kidney, testis and bran GST activities, and expression analysis of GST. ACR (50 mg/300 ml) was ingested for 40 days (20 doses) in drinking water on alternative days, on 40 day post ingestion the control and treated tissues were collected for GST purification by affinity column and biochemical characterization of GSTs by substrate specificities, and GST expression by immuno dot blots. In the analysis of the purified GSTs, we observed that liver GSTs were resolved in to three bands known as Yc, Yb and Ya; kidney GSTs were resolved in to two bands known as Yc and Ya; testis and brain GSTs were resolved as four bands known as Yc, Yb, Yβ and Yδ on 12.5% sodium dodecyl sulfate polyacrylamide gel (SDS PAGE). In the analysis of biochemical characterization, we observed a significant decrease (p < 0.05) in the specific activities of liver GST isoforms with the substrates 1-chloro 2,4-dinitrobenzene (CDNB), bromosulfophthalein (BSP), p-nitrophenyl acetate (pNPA), p-nitrobenzyl chloride (pNBC) and cumene hydroperoxide (CHP), but showed no activity with ethacrynic acid (ECA) and significant decrease (p < 0.05) in the specific activities of kidney GST isoforms with the substrates CDNB, pNPA, pNBC and CHP, but showed no activity with BSP and ECA, and a significant decrease (p < 0.05) in the specific activities of testis and brain GST isoforms with the substrates CDNB, BSP, pNPA, pNBC, ECA and CHP. In the analysis of immuno dot blots, we observed a decreased expression of liver, kidney, testis and brain GSTs. Through the affinity purification and biochemical characterization, we observed a tissue specific distribution of GSTs that is liver GSTs possess Yc, Yb and Ya sub units known as alpha (α) and mu (μ) class GSTs; kidney GSTs possess Yc and Ya sub units known as (α) alpha class GST; testis and brain GSTs possess Yc, Yb, Yβ and Yδ sub units known as alpha (α), mu (μ) and pi (π) class GSTs. Purification studies, biochemical characterization and immuno dot blot analysis were revealed the GSTs were sensitive to high doses of ACR and the high level exposure to ACR cause the damage of detoxification function of GST due to decreased expression and hence lead to cellular dysfunction of vital organs.
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Affiliation(s)
- Sreenivasulu Dasari
- Department of Biochemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India.
| | - Sailaja Gonuguntla
- College of Pharmaceutical Sciences, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | | | - Prabhusaran Nagarajan
- Research Laboratory of Leptospirosis and Medical Nanotechnology, SRM Medical College Hospital and Research Centre, Tiruchirapalli, Tamilnadu, India
| | - Balaji Meriga
- Department of Biochemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
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18
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Camel milk inhibits murine hepatic carcinogenesis, initiated by diethylnitrosamine and promoted by phenobarbitone. Int J Vet Sci Med 2019. [DOI: 10.1016/j.ijvsm.2014.10.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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19
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Ahmad A, Ahmad R. Proteomic approach to identify molecular signatures during experimental hepatic fibrosis and resveratrol supplementation. Int J Biol Macromol 2018; 119:1218-1227. [DOI: 10.1016/j.ijbiomac.2018.08.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/03/2018] [Accepted: 08/12/2018] [Indexed: 12/15/2022]
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20
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Kresty LA, Fromkes JJ, Frankel WL, Hammond CD, Seeram NP, Baird M, Stoner GD. A phase I pilot study evaluating the beneficial effects of black raspberries in patients with Barrett's esophagus. Oncotarget 2018; 9:35356-35372. [PMID: 30450163 PMCID: PMC6219678 DOI: 10.18632/oncotarget.10457] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 05/23/2016] [Indexed: 12/11/2022] Open
Abstract
Black raspberries inhibit a broad range of cancers in preclinical models which has led to clinical evaluations targeting premalignant lesions of the colon, oral cavity and esophagus. A phase I pilot study was conducted in twenty Barrett's esophagus (BE) patients to investigate the effect of lyophilized black raspberries (LBR) on urinary metabolites and markers of lipid peroxidation, DNA damage and tissue markers of cellular proliferation, detoxification, and inflammation. Surveys, biopsies, blood and urine samples were collected before and after 6 months of LBR treatment (32 or 45 g). LBR significantly reduced urinary excretion of 8-epi-prostaglandin F2α, a marker of lipid peroxidation linked to oxidative stress and free radical damage. Urinary levels of the ellagitannin metabolites, urolithin A-glucuronide, urolithin A-sulfate and dimethylellagic acid glucuronide were significantly increased following 12 and 26 weeks of LBR consumption and may prove useful as indicators of compliance in future clinical studies. Immunohistochemical staining of BE biopsies following LBR treatment showed significant increases in mean GST-pi levels, with 55.6% of subjects responding favorably. In summary, LBR significantly decreased urinary lipid peroxidation levels and significantly increased GST-pi, a marker of detoxification, in BE epithelium. Still, LBR may need to be formulated differently, administered at higher concentrations or multiple times a day to increase efficacy.
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Affiliation(s)
- Laura A Kresty
- Division of Hematology & Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - John J Fromkes
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Wendy L Frankel
- Department of Pathology, The Ohio State University, Columbus, Ohio, USA
| | - Cynthia D Hammond
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Navindra P Seeram
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island, USA
| | - Maureen Baird
- Department of Pathology, The Ohio State University, Columbus, Ohio, USA
| | - Gary D Stoner
- Division of Hematology & Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
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Through oxaliplatin resistance induction in colorectal cancer cells, increasing ABCB1 level accompanies decreasing level of miR-302c-5p, miR-3664-5p and miR-129-5p. Biomed Pharmacother 2018; 108:1070-1080. [PMID: 30372807 DOI: 10.1016/j.biopha.2018.09.112] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 09/17/2018] [Accepted: 09/19/2018] [Indexed: 02/07/2023] Open
Abstract
Oxaliplatin as a component of (Neo-) adjuvant chemotherapeutic regimens is administered to colorectal cancer patients. Unfortunately, the acquisition of resistance to this drug in nearly 90% of metastatic patients rendered it as an ineffective drug. Therefore, resistance mechanisms to this drug should be elucidated. There are different genes like GSTP1 and ABCB1 which are responsible for oxaliplatin resistance. We hypothesized that miR-129-5p, miR-302c-5p, miR-3664-5p, mir-3714 and miR-513a-3p are targeting ABCB1 gene, while GSTP1 was predicted to be the potential target of miR-3664-5p, mir-3714 and miR-513a-3p. In order to study this hypothesis, resistant colorectal cell lines were generated through intermittent exposure of HCT116, SW480 and HT29 to the increasing doses of oxaliplatin. MTT assays validated this resistance induction. Expression of ABCB1 and GSTP1 in addition to their targeting miRNAs in different cell lines were studied by quantitative real time PCR in the cell lines. Even though in comparison with HCT116 and SW480 cell lines, GSTP1 expression was reduced in resistant cells, ABCB1 expression was upregulated in these cell lines. On the other hand, HT-29 resistant cells showed elevated GSTP1 and unchanged ABCB1 levels. While miR-302c-5p level was downregulated in resistant cell lines, miR-129-5p and miR-3664-5p level showed different pattern of reduction in the resistant SW480 and HCT116 cell lines. GSTP1 level was correlated directly with miR-513a-3p and miR-3664-5p in all SW480 and HCT116 derived cell lines, however in HT-29-OXR1, GSTP1 level was correlated inversely with miR-3664-5p. In conclusion, upregulation of ABCB1 can be considered as the crucial component of poor response to oxaliplatin which is likely controlled by miR-302c-5p.
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Ristovski S, Uzelac M, Kljun J, Lipec T, Uršič M, Zemljič Jokhadar Š, Žužek MC, Trobec T, Frangež R, Sepčić K, Turel I. Organoruthenium Prodrugs as a New Class of Cholinesterase and Glutathione-S-Transferase Inhibitors. ChemMedChem 2018; 13:2166-2176. [PMID: 30126080 DOI: 10.1002/cmdc.201800432] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Indexed: 12/17/2022]
Abstract
A small library of 17 organoruthenium compounds with the general formula [RuII (fcl)(chel)(L)]n+ (in which fcl=face capping ligand, chel=chelating bidentate ligand, and L=monodentate ligand) were screened for inhibitory activity against cholinesterases and glutathione-S-transferases of human and animal origins. Compounds were selected to include different chelating ligands (i.e., N,N-, N,O-, O,O-, S,O-) and monodentate ligands that can modulate the aquation rate of the metal species. Compounds with a labile ruthenium chloride bond that provided rapid aquation were found to inhibit both sets of enzymes in reversible competitive modes and at pharmaceutically relevant concentrations. When applied at concentrations that completely abolish the activity of human acetylcholinesterase, the lead compound [(η6 -p-cymene)Ru(pyrithionato)Cl] (C1 a) showed no undesirable physiological responses on the neuromuscular system. Finally, C1 a was not cytotoxic against non-transformed cells at pharmaceutically relevant concentrations.
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Affiliation(s)
- Samuel Ristovski
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000, Ljubljana, Slovenia
| | - Monika Uzelac
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000, Ljubljana, Slovenia.,Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, 51000, Rijeka, Croatia
| | - Jakob Kljun
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000, Ljubljana, Slovenia
| | - Tanja Lipec
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000, Ljubljana, Slovenia
| | - Matija Uršič
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000, Ljubljana, Slovenia
| | - Špela Zemljič Jokhadar
- Institute of Biophysics, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia
| | - Monika C Žužek
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000, Ljubljana, Slovenia
| | - Tomaž Trobec
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000, Ljubljana, Slovenia
| | - Robert Frangež
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000, Ljubljana, Slovenia
| | - Kristina Sepčić
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000, Ljubljana, Slovenia
| | - Iztok Turel
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000, Ljubljana, Slovenia
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Uroplakin IIIa Is a Marker in Bladder Cancer but Seems Not to Reflect Chemical Carcinogenesis. BIOMED RESEARCH INTERNATIONAL 2018; 2018:8315410. [PMID: 30069482 PMCID: PMC6057425 DOI: 10.1155/2018/8315410] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 05/07/2018] [Accepted: 05/24/2018] [Indexed: 01/21/2023]
Abstract
Background Uroplakins are glycoproteins investigated as potential markers of urothelial carcinoma. However, their role in chemical carcinogenesis is uncertain. In this study the diagnostic value of plasma and urine uroplakin IIIa (UPIIIa) levels in bladder cancer (BC) was investigated, particularly in the aspect of environmental exposure to chemical carcinogens, measured by DNA damage and detoxification ability in the BC smoking group. The correlation between uroplakin, 8-OHdG, and GSTπ was investigated. Material and Methods This study included 61 BC patients and 33 healthy controls. UPIIIa, 8-OHdG, and GSTπ levels were estimated by the immunoenzymatic method (ELISA). Results UPIIIa levels were elevated in BC patients in plasma (p≤0.001) and in urine (p≤0.001), as were 8-OHdG and GSTπ levels in urine. Moreover, the 8-OHdG level was higher in invasive or high grade tumors. A positive correlation between UPIIIa/GSTπ and 8-OHdG/GSTπ was observed, but no UPIIIa/8-OHdG correlation was noted. Conclusion The study showed the diagnostic value of urine and plasma UPIIIa in BC (good sensitivity, specificity, and predictive value). The lack of UPIIIa correlation with 8-OHdG and smoking suggests that UPIIIa does not reflect the environmental exposure. The increased levels of 8-OHdG and GSTπ in the invasive tumor stage indicate their value in BC monitoring.
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Miyaguti NADS, de Oliveira SCP, Gomes-Marcondes MCC. Maternal nutritional supplementation with fish oil and/or leucine improves hepatic function and antioxidant defenses, and minimizes cachexia indexes in Walker-256 tumor-bearing rats offspring. Nutr Res 2018; 51:29-39. [DOI: 10.1016/j.nutres.2017.12.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 10/30/2017] [Accepted: 12/08/2017] [Indexed: 12/12/2022]
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Mukkavilli R, Yang C, Tanwar RS, Saxena R, Gundala SR, Zhang Y, Ghareeb A, Floyd SD, Vangala S, Kuo WW, Rida PCG, Aneja R. Pharmacokinetic-pharmacodynamic correlations in the development of ginger extract as an anticancer agent. Sci Rep 2018; 8:3056. [PMID: 29445099 PMCID: PMC5813242 DOI: 10.1038/s41598-018-21125-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 01/29/2018] [Indexed: 12/16/2022] Open
Abstract
Anticancer efficacy of ginger phenolics (GPs) has been demonstrated in various in vitro assays and xenograft mouse models. However, only sub-therapeutic plasma concentrations of GPs were detected in human and mouse pharmacokinetic (PK) studies. Intriguingly, a significant portion of GPs occurred as phase II metabolites (mainly glucuronide conjugates) in plasma. To evaluate the disposition of GPs and understand the real players responsible for efficacy, we performed a PK and tissue distribution study in mice. Plasma exposure of GPs was similar on day 1 and 7, suggesting no induction or inhibition of clearance pathways. Both free and conjugated GPs accumulated in all tissues including tumors. While non-cytotoxicity of 6-ginerol glucuronide precluded the role of conjugated GPs in cell death, the free forms were cytotoxic against prostate cancer cells. The efficacy of ginger was best explained by the reconversion of conjugated GPs to free forms by β-glucuronidase, which is over-expressed in the tumor tissue. This previously unrecognized two-step process suggests an instantaneous conversion of ingested free GPs into conjugated forms, followed by their subsequent absorption into systemic circulation and reconversion into free forms. This proposed model uncovers the mechanistic underpinnings of ginger's anticancer activity despite sub-therapeutic levels of free GPs in the plasma.
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Affiliation(s)
- Rao Mukkavilli
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| | - Chunhua Yang
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| | | | - Roopali Saxena
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| | - Sushma R Gundala
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| | - Yingyi Zhang
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| | - Ahmed Ghareeb
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| | - Stephan D Floyd
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| | | | - Wei-Wen Kuo
- Department of Biological Science and Technology, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung, Taiwan, ROC
| | | | - Ritu Aneja
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA.
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Mass spectrometry as a powerful tool to study therapeutic metallodrugs speciation mechanisms: Current frontiers and perspectives. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.02.012] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Soares PDO, Maluf Cury P, Mendoza López RV, Cernea CR, Fukuyama EE, Livingstone Alves Figueiredo D, Gorgonio da Nobrega F, Curioni OA, Nunes FD, Ajub Moyses R, Bueno Garcia ML. GTSP1 expression in non-smoker and non-drinker patients with squamous cell carcinoma of the head and neck. PLoS One 2017; 12:e0182600. [PMID: 28817620 PMCID: PMC5560606 DOI: 10.1371/journal.pone.0182600] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 07/23/2017] [Indexed: 12/19/2022] Open
Abstract
Introduction The main risk factors for head and neck squamous cell carcinoma (HNSCC) are tobacco and alcohol consumption and human papillomavirus (HPV) infection. However, in a subset of patients, no risk factors can be identified. Glutathione S-transferase π (GTSP1) is a carcinogen-detoxifying enzyme that is activated by exposure to carcinogens, and it is associated with a reduction in response to toxic therapies. We studied the expression of GTSP1 in tumor and non-tumor tissue samples from patients with and without these risks to identify whether GTSP1 expression differs according to exposure to carcinogens. Materials and methods Non-smoker/non-drinker (NSND) and smoker/drinker (SD) patients were matched according to age, gender, tumor site, TNM stage, grade and histological variants to establish 47 pairs of patients who have been previously tested for HPV. GTSP1 immunostaining was analyzed using a semi-quantitative method with scores ranging from 0 to 3 according to the area of immunostaining. Results GTSP1 expression was detected in the tumors of both groups. GTSP1 expression was higher in the non-tumor margins of SD patients (p = 0.004). There was no association between GTSP1 expression and positivity for HPV. No differences in survival were observed according to GTSP1 staining in tumors and non-tumor margins. Conclusion This study showed that GTSP1 was expressed in tumors of HNSCC patients regardless of smoking, drinking or HPV infection status. The difference in GTSP1 expression in non-tumor margins between the two groups may have been due to two possible reasons. First, elevated GTSP1 expression in SD patients might be the result of activation of GTSP1 in response to exposure to carcinogens. Second, alternatively, impairment in the detoxifying system of GTSP1, as observed by the reduced expression of GTSP1, might make patients susceptible to carcinogens other than tobacco and alcohol, which may be the underlying mechanism of carcinogenesis in the absence of risk factors.
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Affiliation(s)
- Pamela de Oliveira Soares
- Department of Head and Neck Surgery, Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo / LIM-28—São Paulo, SP, Brazil
| | - Patrícia Maluf Cury
- Department of Pathology and Legal Medicine–Faculdade de Medicina de São José do Rio Preto São José do Rio Preto, SP, Brazil
| | | | - Cláudio Roberto Cernea
- Department of Head and Neck Surgery, Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo / LIM-28—São Paulo, SP, Brazil
| | - Erika Erina Fukuyama
- Department of Head and Neck Surgery, Instituto do Câncer Arnaldo Vieira de Carvalho, São Paulo, SP, Brazil
| | | | | | - Otavio Alberto Curioni
- Department of Otorhinolaryngology and Head and Neck Surgery, Hospital Heliópolis São Paulo, SP, Brazil
| | - Fabio Daumas Nunes
- Department of Oral Pathology Faculdade de Odontologia da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Raquel Ajub Moyses
- Department of Head and Neck Surgery, Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo / LIM-28—São Paulo, SP, Brazil
- * E-mail:
| | - Maria Lúcia Bueno Garcia
- Department of Internal Medicine, Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
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Mohana K, Achary A. Human cytosolic glutathione-S-transferases: quantitative analysis of expression, comparative analysis of structures and inhibition strategies of isozymes involved in drug resistance. Drug Metab Rev 2017; 49:318-337. [DOI: 10.1080/03602532.2017.1343343] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Krishnamoorthy Mohana
- Department of Biotechnology, Centre for Research, Kamaraj College of Engineering and Technology, Virudhunagar, India
| | - Anant Achary
- Department of Biotechnology, Centre for Research, Kamaraj College of Engineering and Technology, Virudhunagar, India
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Vello TP, da Silva LM, Silva GO, de Camargo DH, Corrêa CC, Bof Bufon CC. Hybrid organic/inorganic interfaces as reversible label-free platform for direct monitoring of biochemical interactions. Biosens Bioelectron 2017; 87:209-215. [DOI: 10.1016/j.bios.2016.08.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 08/05/2016] [Accepted: 08/16/2016] [Indexed: 01/06/2023]
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Oksuzoglu E, Ertan-Bolelli T, Can H, Tarhan M, Ozturk K, Yildiz I. Antitumor activities on HL-60 human leukemia cell line, molecular docking, and quantum-chemical calculations of some sulfonamide-benzoxazoles. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2016; 45:1388-1396. [PMID: 27829297 DOI: 10.1080/21691401.2016.1241796] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
We previously synthesized some novel benzoxazole derivatives-containing sulfonamide. In this study, the compounds were investigated for their antitumor activities against the HL-60 human leukemia cells, using the MTT assay. Moreover, quantum chemical calculations using the DFT methods were applied for understanding the difference in antitumor activity. Additionally, molecular docking into active site of the DNA Topo II enzyme was performed on 3QX3. PDB file in order to find out possible mechanism of antitumor effect. According to all obtained results showed that compounds 1b, 1c, and 1d could be potential drug candidates as new antitumor agents, and are promising for cancer therapy.
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Affiliation(s)
- Emine Oksuzoglu
- a Molecular Biology Division, Department of Biology, Faculty of Science and Letters , Aksaray University , Aksaray , Turkey
| | - Tugba Ertan-Bolelli
- b Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Ankara University , Tandogan , Ankara , Turkey
| | - Hatice Can
- c Department of Chemistry, Faculty of Basic Sciences , Gebze Technical University , Gebze-Kocaeli , Turkey
| | - Mehtap Tarhan
- a Molecular Biology Division, Department of Biology, Faculty of Science and Letters , Aksaray University , Aksaray , Turkey
| | - Kamile Ozturk
- a Molecular Biology Division, Department of Biology, Faculty of Science and Letters , Aksaray University , Aksaray , Turkey
| | - Ilkay Yildiz
- b Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Ankara University , Tandogan , Ankara , Turkey
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El-Gazzar MG, Zaher NH, El-Hossary EM, Ismail AF. Radio-protective effect of some new curcumin analogues. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 162:694-702. [DOI: 10.1016/j.jphotobiol.2016.08.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 08/01/2016] [Indexed: 01/18/2023]
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Recio-Vega R, González-Cortes T, Olivas-Calderón E, Lantz RC, Gandolfi AJ, Michel-Ramirez G. Association between polymorphisms in arsenic metabolism genes and urinary arsenic methylation profiles in girls and boys chronically exposed to arsenic. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2016; 57:516-25. [PMID: 27327299 PMCID: PMC4980171 DOI: 10.1002/em.22026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 05/06/2016] [Accepted: 05/12/2016] [Indexed: 06/06/2023]
Abstract
Disease manifestations or susceptibilities often differ among individuals exposed to the same concentrations of arsenic (As). These differences have been associated with several factors including As metabolism, sex, age, genetic variants, nutritional status, smoking, and others. This study evaluated the associations between four As metabolism-related gene polymorphisms/null genotypes with urinary As methylation profiles in girls and boys chronically exposed to As. In a total of 332 children aged 6-12 years, the frequency of AS3MT, GSTO1, GSTT1, and GSTM1 polymorphisms/null genotypes and As urinary metabolites were measured. The results revealed that total As and monomethyl metabolites of As (MMA) levels were higher in boys than in girls. No differences in the frequency of the evaluated polymorphisms were found between girls and boys. In AS3MT-Met287Thr carriers, %MMA levels were higher and second methylation levels (defined as dimethylarsinic acid divided by MMA) were lower. In children with the GSTM1 null genotype, second methylation levels were higher. In boys, a positive association between the AS3MT-Met287Thr polymorphism with %MMA and between the GSTO1-Glu155del and As(v) was found; whereas, a negative relationship was identified between AS3MT-Met287Thr and second methylation profiles. In girls, a positive association was found between the GSTO1-Ala140Asp polymorphism with second methylation levels. In conclusion, our data indicate that gender, high As exposure levels, and polymorphisms in the evaluated genes negatively influenced As metabolism. Environ. Mol. Mutagen. 57:516-525, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Rogelio Recio-Vega
- Department of Environmental Health, Biomedical Research Center, School of Medicine, University of Coahuila, Torreon, Coahuila, Mexico
| | - Tania González-Cortes
- Department of Environmental Health, Biomedical Research Center, School of Medicine, University of Coahuila, Torreon, Coahuila, Mexico
| | - Edgar Olivas-Calderón
- Department of Environmental Health, Biomedical Research Center, School of Medicine, University of Coahuila, Torreon, Coahuila, Mexico
- School of Chemical Sciences, University Juarez of Durango, Gomez Palacio, Durango, México
| | - R. Clark Lantz
- Southwest Environmental Health Science Center, University of Arizona, Tucson, Arizona, United States of America
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona, United States of America
| | - A. Jay Gandolfi
- Southwest Environmental Health Science Center, University of Arizona, Tucson, Arizona, United States of America
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona, United States of America
| | - Gladis Michel-Ramirez
- Department of Environmental Health, Biomedical Research Center, School of Medicine, University of Coahuila, Torreon, Coahuila, Mexico
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Hamed RR, Saleh NSM, Shokeer A, Guneidy RA, Abdel-Ghany SS. Glutathione and its related enzymes in the gonad of Nile Tilapia (Oreochromis niloticus). FISH PHYSIOLOGY AND BIOCHEMISTRY 2016; 42:353-364. [PMID: 26476660 DOI: 10.1007/s10695-015-0143-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 10/09/2015] [Indexed: 06/05/2023]
Abstract
Glutathione (GSH) concentration, the activity of its metabolizing enzymes, glutathione transferase (GST), glutathione peroxidase (GPx), glutathione reductase (GR), and the antioxidant enzyme catalase (CAT) in O. niloticus ovary and testis were examined. GSH concentration of O. niloticus testis exhibited high concentration (129 ± 21 nmol/g tissue) compared with GSH concentration (49.2 ± 8.3 nmol/g tissue) in the ovary. GST, GPx, GR, and CAT activities of O. niloticus testis exhibited high values compared with their corresponding values in ovary homogenates. However, protein concentration in ovary homogenates exhibited higher values (175 ± 40.6 mg) compared with testis homogenates (27.1 ± 3.7 mg). O. niloticus ovary was less effective in excretion of xenobiotices compared with the testis, where its function is mainly in increasing the protein content of the eggs; however, in O. niloticus testis, the glutathione cycle operated in accelerated way in the direction of reduced GSH production in order to protect the maturation stages in a save way. A simple reproducible procedure for the purification of GST from O. niloticus ovary was established. The enzymes proved to be homogenous as judged by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), and its molecular weight was calculated to be 25.1 kDa. GST of O. niloticus ovary exhibited maximum activity at pH 7.5. The Michaelis-Menten constant (K(m)) of the purified ovary GST for GSH and CDNB was 0.076 mM and 1.0 mM, respectively. Cibacron blue was the most potent inhibitor of ovary GST activity (IC50 value, concentration of inhibitor that will give 50% inhibition, equal 0.002 μM). The specific activity of GST toward different electrophilic substrates was determined. GST activity toward benzyl isothiocyanate was the highest compared with phenethyl isothiocyanate and allyl isothiocyanate.
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Gao S, Sun FK, Fan YC, Shi CH, Zhang ZH, Wang LY, Wang K. Aberrant GSTP1 promoter methylation predicts short-term prognosis in acute-on-chronic hepatitis B liver failure. Aliment Pharmacol Ther 2015; 42:319-29. [PMID: 26040771 DOI: 10.1111/apt.13271] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 12/28/2014] [Accepted: 05/20/2015] [Indexed: 12/13/2022]
Abstract
BACKGROUND Glutathione-S-transferase P1 (GSTP1) methylation has been demonstrated to be associated with oxidative stress induced liver damage in acute-on-chronic hepatitis B liver failure (ACHBLF). AIM To evaluate the methylation level of GSTP1 promoter in acute-on-chronic hepatitis B liver failure and determine its predictive value for prognosis. METHODS One hundred and five patients with acute-on-chronic hepatitis B liver failure, 86 with chronic hepatitis B (CHB) and 30 healthy controls (HC) were retrospectively enrolled. GSTP1 methylation level in peripheral mononuclear cells (PBMC) was detected by MethyLight. Clinical and laboratory parameters were obtained. RESULTS GSTP1 methylation levels were significantly higher in patients with acute-on-chronic hepatitis B liver failure (median 16.84%, interquartile range 1.83-59.05%) than those with CHB (median 1.25%, interquartile range 0.48-2.47%; P < 0.01) and HC (median 0.80%, interquartile range 0.67-1.27%; P < 0.01). In acute-on-chronic hepatitis B liver failure group, nonsurvivors showed significantly higher GSTP1 methylation levels (P < 0.05) than survivors. GSTP1 methylation level was significantly correlated with total bilirubin (r = 0.29, P < 0.01), prothrombin time activity (r = -0.24, P = 0.01) and model for end-stage liver disease (MELD) score (r = 0.26, P = 0.01). When used to predict 1- or 2-month mortality of acute-on-chronic hepatitis B liver failure, GSTP1 methylation showed significantly better predictive value than MELD score [area under the receiver operating characteristic curve (AUC) 0.89 vs. 0.72, P < 0.01; AUC 0.83 vs. 0.70, P < 0.05 respectively]. Meanwhile, patients with GSTP1 methylation levels above the cut-off points showed significantly poorer survival than those below (P < 0.05). CONCLUSIONS Aberrant GSTP1 promoter methylation exists in acute-on-chronic hepatitis B liver failure and shows high predictive value for short-term mortality. It might serve as a potential prognostic marker for acute-on-chronic hepatitis B liver failure.
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Affiliation(s)
- S Gao
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan, China
| | - F-K Sun
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan, China
| | - Y-C Fan
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan, China.,Institute of Hepatology, Shandong University, Jinan, China
| | - C-H Shi
- Department of Hepatology, Qingdao Infectious Disease Hospital, Qingdao, China
| | - Z-H Zhang
- Department of Hepatology, Jinan Infectious Disease Hospital, Jinan, China
| | - L-Y Wang
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan, China
| | - K Wang
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan, China.,Institute of Hepatology, Shandong University, Jinan, China
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Martinez-Balibrea E, Martínez-Cardús A, Ginés A, Ruiz de Porras V, Moutinho C, Layos L, Manzano JL, Bugés C, Bystrup S, Esteller M, Abad A. Tumor-Related Molecular Mechanisms of Oxaliplatin Resistance. Mol Cancer Ther 2015; 14:1767-76. [PMID: 26184483 DOI: 10.1158/1535-7163.mct-14-0636] [Citation(s) in RCA: 201] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 05/16/2015] [Indexed: 01/04/2023]
Abstract
Oxaliplatin was the first platinum drug with proven activity against colorectal tumors, becoming a standard in the management of this malignancy. It is also considered for the treatment of pancreatic and gastric cancers. However, a major reason for treatment failure still is the existence of tumor intrinsic or acquired resistance. Consequently, it is important to understand the molecular mechanisms underlying the appearance of this phenomenon to find ways of circumventing it and to improve and optimize treatments. This review will be focused on recent discoveries about oxaliplatin tumor-related resistance mechanisms, including alterations in transport, detoxification, DNA damage response and repair, cell death (apoptotic and nonapoptotic), and epigenetic mechanisms.
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Affiliation(s)
- Eva Martinez-Balibrea
- Medical Oncology Service, Catalan Institute of Oncology (ICO), Hospital Germans Trias i Pujol, Badalona, Barcelona, Catalonia, Spain. Health Sciences Research Institute of the Germans Trias i Pujol Foundation (IGTP). Badalona, Catalonia, Spain.
| | - Anna Martínez-Cardús
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet, Barcelona, Catalonia, Spain
| | - Alba Ginés
- Health Sciences Research Institute of the Germans Trias i Pujol Foundation (IGTP). Badalona, Catalonia, Spain
| | - Vicenç Ruiz de Porras
- Health Sciences Research Institute of the Germans Trias i Pujol Foundation (IGTP). Badalona, Catalonia, Spain
| | - Catia Moutinho
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet, Barcelona, Catalonia, Spain
| | - Laura Layos
- Medical Oncology Service, Catalan Institute of Oncology (ICO), Hospital Germans Trias i Pujol, Badalona, Barcelona, Catalonia, Spain
| | - José Luis Manzano
- Medical Oncology Service, Catalan Institute of Oncology (ICO), Hospital Germans Trias i Pujol, Badalona, Barcelona, Catalonia, Spain
| | - Cristina Bugés
- Medical Oncology Service, Catalan Institute of Oncology (ICO), Hospital Germans Trias i Pujol, Badalona, Barcelona, Catalonia, Spain. Health Sciences Research Institute of the Germans Trias i Pujol Foundation (IGTP). Badalona, Catalonia, Spain. Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet, Barcelona, Catalonia, Spain. Department of Physiological Sciences II, School of Medicine, University of Barcelona, Barcelona, Catalonia, Spain. Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain. Oncology Unit, Hospital CIMA Sanitas, Barcelona, Catalonia, Spain
| | - Sara Bystrup
- Health Sciences Research Institute of the Germans Trias i Pujol Foundation (IGTP). Badalona, Catalonia, Spain
| | - Manel Esteller
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet, Barcelona, Catalonia, Spain. Department of Physiological Sciences II, School of Medicine, University of Barcelona, Barcelona, Catalonia, Spain. Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain
| | - Albert Abad
- Medical Oncology Service, Catalan Institute of Oncology (ICO), Hospital Germans Trias i Pujol, Badalona, Barcelona, Catalonia, Spain. Health Sciences Research Institute of the Germans Trias i Pujol Foundation (IGTP). Badalona, Catalonia, Spain. Oncology Unit, Hospital CIMA Sanitas, Barcelona, Catalonia, Spain
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Purkait K, Karmakar S, Bhattacharyya S, Chatterjee S, Dey SK, Mukherjee A. A hypoxia efficient imidazole-based Ru(ii) arene anticancer agent resistant to deactivation by glutathione. Dalton Trans 2015; 44:5969-73. [DOI: 10.1039/c4dt03983a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[RuII(η6-p-cym)(L)Cl](PF6) is slow to hydrolyze and shows better anticancer activity in hypoxia with strong resistance to deactivation by l-glutathione.
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Affiliation(s)
- Kallol Purkait
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur-741246
- India
| | - Subhendu Karmakar
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur-741246
- India
| | - Sudipta Bhattacharyya
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur-741246
- India
| | - Saptarshi Chatterjee
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur-741246
- India
| | - Suman Kr Dey
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur-741246
- India
| | - Arindam Mukherjee
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur-741246
- India
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Ertan-Bolelli T, Musdal Y, Bolelli K, Yilmaz S, Aksoy Y, Yildiz I, Aki-Yalcin E, Yalcin I. Synthesis and Biological Evaluation of 2-Substituted-5-(4-nitrophenylsulfonamido)benzoxazoles as Human GST P1-1 Inhibitors, and Description of the Binding Site Features. ChemMedChem 2014; 9:984-92. [DOI: 10.1002/cmdc.201400010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Indexed: 11/09/2022]
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Ma QJ, Zhang YC, Shi JS, Li GC. Clinical significance of P-glycoprotein and glutathione S-transferase π expression in gallbladder carcinoma. Exp Ther Med 2014; 7:635-639. [PMID: 24520259 PMCID: PMC3919900 DOI: 10.3892/etm.2014.1472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Accepted: 12/10/2013] [Indexed: 11/05/2022] Open
Abstract
P-glycoprotein (P-gp) and glutathione S-transferase π (GST-π) are not only drug-resistance markers, but also prognostic markers of various cancers. The aim of the present study was to investigate the clinical significance of P-gp and GST-π in gallbladder carcinoma (GBC). Tissue samples from 42 patients with GBC were immunostained. Demographic, clinical and follow-up data were collected and analyzed. The positive expression rates of P-gp and GST-π in the GBC tissues were significantly higher (76.2 and 64.3%, respectively) than that of chronic cholecystitis specimens (30 and 20%, respectively) (P=0.014 and 0.035, respectively), and correlated with the Nevin stage of GBC. Multivariate analysis demonstrated that patients with positive expression of P-gp and GST-π showed a significantly lower 2-year survival rate (11.1 and 12%, respectively) compared with patients with negative expression (55.6 and 45.5%, respectively) (P=0.013 and 0.036, respectively). P-gp was also found to be an independent prognostic marker of 2-year survival rate by logistic regression analysis (B=-2.76, P=0.061). Results of this study suggest that P-gp is a prognostic marker of GBC and the detection of P-gp and GST-π may contribute to the prognosis of GBC and the application of chemotherapy as a therapeutic treatment.
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Affiliation(s)
- Qing-Jiu Ma
- General Surgery Department, GaoXin Hospital of Xi'an Jiao Tong University, Xi'an, Shaanxi 710075, P.R. China
| | - Yu-Cun Zhang
- General Surgery Department, GaoXin Hospital of Xi'an Jiao Tong University, Xi'an, Shaanxi 710075, P.R. China
| | - Jing-Sen Shi
- Hepatobiliary Department, First Hospital of Xi'an Jiao Tong University, Xi'an, Shaanxi 710061, P.R. China
| | - Guo-Cai Li
- General Surgery Department, GaoXin Hospital of Xi'an Jiao Tong University, Xi'an, Shaanxi 710075, P.R. China
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Abstract
Nrf2:INrf2 (Keap1) are cellular sensors of oxidative and electrophilic stress. Nrf2 is a nuclear factor that controls the expression and coordinated induction of a battery of genes that encode detoxifying enzymes, drug transporters, antiapoptotic proteins, and proteasomes. In the basal state, Nrf2 is constantly degraded in the cytoplasm by its inhibitor, INrf2. INrf2 functions as an adapter for Cul3/Rbx1 E3 ubiquitin ligase-mediated degradation of Nrf2. Chemicals, including antioxidants, tocopherols including α-tocopherol (vitamin E), and phytochemicals, and radiation antagonize the Nrf2:INrf2 interaction and lead to the stabilization and activation of Nrf2. The signaling events involve preinduction, induction, and postinduction responses that tightly control Nrf2 activation and repression back to the basal state. Oxidative/electrophilic signals activate unknown tyrosine kinases in a preinduction response that phosphorylates specific residues on Nrf2 negative regulators, INrf2, Fyn, and Bach1, leading to their nuclear export, ubiquitination, and degradation. This prepares nuclei for unhindered import of Nrf2. Oxidative/electrophilic modification of INrf2 cysteine 151 followed by PKC phosphorylation of Nrf2 serine 40 in the induction response results in the escape or release of Nrf2 from INrf2. Nrf2 is thus stabilized and translocates to the nucleus, resulting in a coordinated activation of gene expression. This is followed by a postinduction response that controls the "switching off" of Nrf2-activated gene expression. GSK3β, under the control of AKT and PI3K, phosphorylates Fyn, leading to Fyn nuclear localization. Fyn phosphorylates Nrf2 Y568, resulting in nuclear export and degradation of Nrf2. The activation and repression of Nrf2 provide protection against oxidative/electrophilic stress and associated diseases, including cancer. However, deregulation of INrf2 and Nrf2 due to mutations may lead to nuclear accumulation of Nrf2 that reduces apoptosis and promotes oncogenesis and drug resistance.
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Affiliation(s)
- Suryakant K Niture
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Raju Khatri
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Anil K Jaiswal
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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Heger M, van Golen RF, Broekgaarden M, Michel MC. The molecular basis for the pharmacokinetics and pharmacodynamics of curcumin and its metabolites in relation to cancer. Pharmacol Rev 2013; 66:222-307. [PMID: 24368738 DOI: 10.1124/pr.110.004044] [Citation(s) in RCA: 346] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This review addresses the oncopharmacological properties of curcumin at the molecular level. First, the interactions between curcumin and its molecular targets are addressed on the basis of curcumin's distinct chemical properties, which include H-bond donating and accepting capacity of the β-dicarbonyl moiety and the phenylic hydroxyl groups, H-bond accepting capacity of the methoxy ethers, multivalent metal and nonmetal cation binding properties, high partition coefficient, rotamerization around multiple C-C bonds, and the ability to act as a Michael acceptor. Next, the in vitro chemical stability of curcumin is elaborated in the context of its susceptibility to photochemical and chemical modification and degradation (e.g., alkaline hydrolysis). Specific modification and degradatory pathways are provided, which mainly entail radical-based intermediates, and the in vitro catabolites are identified. The implications of curcumin's (photo)chemical instability are addressed in light of pharmaceutical curcumin preparations, the use of curcumin analogues, and implementation of nanoparticulate drug delivery systems. Furthermore, the pharmacokinetics of curcumin and its most important degradation products are detailed in light of curcumin's poor bioavailability. Particular emphasis is placed on xenobiotic phase I and II metabolism as well as excretion of curcumin in the intestines (first pass), the liver (second pass), and other organs in addition to the pharmacokinetics of curcumin metabolites and their systemic clearance. Lastly, a summary is provided of the clinical pharmacodynamics of curcumin followed by a detailed account of curcumin's direct molecular targets, whereby the phenotypical/biological changes induced in cancer cells upon completion of the curcumin-triggered signaling cascade(s) are addressed in the framework of the hallmarks of cancer. The direct molecular targets include the ErbB family of receptors, protein kinase C, enzymes involved in prostaglandin synthesis, vitamin D receptor, and DNA.
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Affiliation(s)
- Michal Heger
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105AZ Amsterdam, The Netherlands.
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Lin Y, Huang Y, Zheng W, Wang F, Habtemariam A, Luo Q, Li X, Wu K, Sadler PJ, Xiong S. Organometallic ruthenium anticancer complexes inhibit human glutathione-S-transferase π. J Inorg Biochem 2013; 128:77-84. [DOI: 10.1016/j.jinorgbio.2013.07.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 07/15/2013] [Accepted: 07/18/2013] [Indexed: 10/26/2022]
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Dourado DFAR, Fernandes PA, Ramos MJ, Mannervik B. Mechanism of glutathione transferase P1-1-catalyzed activation of the prodrug canfosfamide (TLK286, TELCYTA). Biochemistry 2013; 52:8069-78. [PMID: 24066958 DOI: 10.1021/bi4005705] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Canfosfamide (TLK286, TELCYTA) is a prodrug that upon activation by glutathione transferase P1-1 (GST P1-1) yields an anticancer alkylating agent and a glutathione derivative. The rationale underlying the use of TLK286 in chemotherapy is that tumor cells overexpressing GST P1-1 will be locally exposed to the released alkylating agent with limited collateral toxicity to the surrounding normal tissues. TLK286 has demonstrated clinical effects in phase II and III clinical trials for the treatment of malignancies, such as ovarian cancer, nonsmall cell lung cancer, and breast cancer, as a single agent and in combination with other chemotherapeutic agents. In spite of these promising results, the detailed mechanism of GST P1-1 activation of the prodrug has not been elucidated. Here, we propose a mechanism for the TLK286 activation by GST P1-1 on the basis of density functional theory (DFT) and on potential of mean force (PMF) calculations. A catalytic water molecule is instrumental to the activation by forming a network of intermolecular interactions between the active-site Tyr7 hydroxyl and the sulfone and COO(-) groups of TLK286. The results obtained are consistent with the available experimental kinetic data and provide an atomistic understanding of the TLK286 activation mechanism.
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Affiliation(s)
- Daniel F A R Dourado
- REQUIMTE/Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto , Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
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Wei B, Zhou Y, Xu Z, Ruan J, Cheng H, Zhu M, Hu Q, Jin K, Yan Z, Zhou D, Xuan F, Zhou H, Wang Z, Huang X, Wang Q. GSTP1 Ile105Val polymorphism and prostate cancer risk: evidence from a meta-analysis. PLoS One 2013; 8:e71640. [PMID: 23977100 PMCID: PMC3747220 DOI: 10.1371/journal.pone.0071640] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Accepted: 07/02/2013] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Glutathione S-transferase P1 (GSTP1) is thought to be involved in the detoxification of reactive carcinogen metabolites. Numerous epidemiological studies have evaluated the association of GSTP1 Ile105Val polymorphism with the risk of prostate cancer. However, the results remain inconclusive. To derive a more precise estimation, a meta-analysis was performed. METHODOLOGY/PRINCIPAL FINDINGS A comprehensive search was conducted to identify the eligible studies. We used odds ratios (ORs) with 95% confidence intervals (CIs) to assess the strength of the relationship. The overall association was not significant (Val/Val vs. Ile/Ile OR = 1.06, 95% CI = 0.90-1.25, P = 0.50; Val/Val vs. Val/Ile+Ile/Ile: OR = 1.07, 95% CI = 0.91-1.25, P = 0.44). In subgroup analyses by ethnicity and prostate cancer grade, the similar results were observed. However, in stratified analysis by clinical stage, we found a significant association with low-stage prostate cancer (Val/Val vs. Ile/Ile: OR = 2.70, 95% CI = 1.73-4.22, P<0.001; Val/Val vs. Val/Ile+Ile/Ile: OR = 2.14, 95% CI = 1.38-3.33, P = 0.001). Moreover, there was no statistically significant evidence of multiplicative interactions neither between the GSTP1 Ile105Val polymorphism and GSTM1, nor between smoking status and GSTP1 on prostate cancer risk. CONCLUSIONS This meta-analysis showed that GSTP1 Ile105Val polymorphism might not be significantly associated with overall prostate cancer risk. Further stratified analyses showed a significant association with low-stage prostate cancer.
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Affiliation(s)
- Bingbing Wei
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
| | - You Zhou
- Minerva Foundation Institute for Medical Research, Biomedicum 2U, Helsinki, Finland
| | - Zhuoqun Xu
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
- * E-mail: (ZX); (JR)
| | - Jun Ruan
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
- * E-mail: (ZX); (JR)
| | - Huan Cheng
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ming Zhu
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
| | - Qiang Hu
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
| | - Ke Jin
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
| | - Zhiqiang Yan
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
| | - Deqi Zhou
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
| | - Feng Xuan
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
| | - Hongyi Zhou
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
| | - Zhirong Wang
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
| | - Xing Huang
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
| | - Qiang Wang
- Department of Urology, Affiliated Wuxi People’s Hospital, Nanjing Medical University, Wuxi, China
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Xu Y, Zheng QC, Yu LY, Zhang HX, Sun CC. Computational modelling of novel inhibitors targeting the human GSTP1*D homology domain. MOLECULAR SIMULATION 2013. [DOI: 10.1080/08927022.2012.755525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Noh JS, Lee JW, Cha JE, Kong KH. Engineering High Catalytic Efficiency of the Steroid Isomerase Activity of Human Glutathione S-transferase P1-1. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.2.645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Bedford MR, Anathhanam S, Saleh D, Hickson A, McGregor AK, Boyle K, Burke D. Response of glutathione S-transferase Pi (GSTP1) to neoadjuvant therapy in rectal adenocarcinoma. Colorectal Dis 2012; 14:1483-8. [PMID: 22390478 DOI: 10.1111/j.1463-1318.2012.03022.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AIM The response of rectal adenocarcinoma to neoadjuvant therapy is variable. Accurate prediction of response would enable selective administration of therapy. The enzyme glutathione S-transferase Pi (GSTP1) has been shown to influence response to therapy in some solid tumours. Few data are available for rectal cancer. METHOD The GSTP1 levels in rectal adenocarcinoma and adjacent normal mucosa were quantified before and after exposure to neoadjuvant therapy. Venous blood samples and biopsies of normal rectal mucosa and tumour were prospectively obtained from patients with primary rectal cancer. Patients were stratified by exposure to neoadjuvant therapy or surgery alone. GSTP1 was quantitatively measured using an enzyme-linked immunosorbent assay. RESULTS Ninety-two patients (54 men; median age 68 years) were recruited. The median GSTP1 level was significantly higher in rectal adenocarcinoma than in matched normal mucosa [6.59 μg/mg vs 4.57 μg/mg; P < 0.001]. The median tumour GSTP1 level was significantly lower in the therapy group compared with unmatched samples from the no-therapy group [4.47 μg/mg vs 7.76 μg/mg; P < 0.001]. CONCLUSION The GSTP1 level is increased in rectal adenocarcinoma compared with adjacent normal mucosa. It decreases following neoadjuvant therapy. Future studies correlating pre-therapy GSTP1 levels with pathological response would be of interest.
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Affiliation(s)
- M R Bedford
- School of Medicine, University of Leeds, Leeds, UK.
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Abstract
Alkylating agents are the most widely used anticancer drugs whose main target is the DNA, although how exactly the DNA lesions cause cell death is still not clear. The emergence of resistance to this class of drugs as well as to other antitumor agents is one of the major causes of failure of cancer treatment. This paper reviews some of the best characterized mechanisms of resistance to alkylating agents. Pre- and post-target mechanisms are recognized, the former able to limit the formation of lethal DNA adducts, and the latter enabling the cell to repair or tolerate the damage. The role in the pre-target mechanisms of reduced drug accumulation and the increased detoxification or activation systems (such as DT-diaphorase, metallothionein, GST/GSH system, etc...) are discussed. In the post-target mechanisms the different DNA repair pathways, tolerance to alkylation damage and the 'downstream' effects (cell cycle arrest and/or apoptosis) are examined.
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Affiliation(s)
- G Damia
- Department of Oncology, Instituto di Ricerche Farmacologiche 'Mario Negri', Via Eritrea 62, 20157, Milan, Italy.,
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Structural approaches to probing metal interaction with proteins. J Inorg Biochem 2012; 115:138-47. [DOI: 10.1016/j.jinorgbio.2012.02.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 02/02/2012] [Accepted: 02/20/2012] [Indexed: 12/13/2022]
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Kumar JS, Suman S, Singh V, Chandna S. Radioresistant Sf9 insect cells display moderate resistance against cumene hydroperoxide. Mol Cell Biochem 2012; 367:141-51. [PMID: 22555957 DOI: 10.1007/s11010-012-1327-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Accepted: 04/18/2012] [Indexed: 11/25/2022]
Abstract
Lepidopteran insect cells serve as excellent model to study stress responses and are known to display resistance against DNA damaging agents including ionizing radiation; however, limited information is available on the effects of membrane damaging agents in these cells. In this study, we investigated the response of Sf9 cells (derived from ovaries of Spodoptera frugiperda; order Lepidoptera) to cumene hydroperoxide (CHPx), compared to human BMG-1 cells. CHPx treatment at doses lethal for human cells also caused typical necrosis in Sf9. Severe necrosis in human BMG-1 cells was observed at 125 μM, whereas similar effect in Sf9 cells was observed at 250 μM. In Sf9 cells, CHPx (250 μM) induced negligible changes in mitochondrial membrane potential and intracellular reactive oxygen species, while moderate effect was observed on intracellular calcium distribution. Reduced DNA damage and lipid (including cardiolipin) oxidation was observed in Sf9 cells that could be due to moderate total antioxidant status and constitutive/induced glutathione S-transferase activity. This study importantly demonstrates that Lepidopteran insect cells having extensive resistance towards DNA damaging agents show only moderately higher resistance to membrane damaging agents. A stronger reducing environment involving efficient antioxidant system seems to contribute significantly in this response.
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Affiliation(s)
- Jyoti Swaroop Kumar
- Division of Radiation Biosciences, Institute of Nuclear Medicine & Allied Sciences (INMAS), Timarpur, Delhi, India
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Poehlmann A, Kuester D, Malfertheiner P, Guenther T, Roessner A. Inflammation and Barrett's carcinogenesis. Pathol Res Pract 2012; 208:269-80. [PMID: 22541897 DOI: 10.1016/j.prp.2012.03.007] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Barrett's esophagus (BE) is one of the most common premalignant lesions in which normal squamous epithelium of the esophagus is replaced by metaplastic columnar epithelium. Esophageal adenocarcinoma (EA) develops through progression from BE to low- and high-grade dysplasia (LGD/HGD) and to adenocarcinoma. It is widely accepted that inflammation can increase cancer risk, promoting tumor progression. Therefore, inflammation is regarded as the seventh hallmark of cancer. In recent years, the inflammation-cancer connection of Barrett's carcinogenesis has been intensively studied, unraveling genetic abnormalities. Besides genetic alterations, inflammation is also epigenetically linked to loss of protein expression through transcriptional silencing via promoter methylation. Key mediators linking inflammation and Barrett's carcinogenesis include reactive oxygen species (ROS), NFκB, inflammatory cytokines, prostaglandins, and specific microRNAs (miRNAs). Therefore, the decipherment of molecular pathways that contain these and novel inflammatory key mediators is of major importance for diagnosis, therapy, and prognosis. The detailed elucidation of the signaling molecules involved in Barrett's carcinogenesis will be important for the development of pharmaceutical inhibitors. We herein give an overview of the current knowledge of the inflammation-mediated genetic and epigenetic alterations involved in Barrett's carcinogenesis. We highlight the role of oxidative stress and deregulated DNA damage checkpoints besides the NFκB pathway.
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Affiliation(s)
- A Poehlmann
- Department of Pathology, Otto-von-Guericke University Magdeburg, Germany.
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