1
|
Leonova E, Ryabokon N, Rostoka E, Borisovs V, Velena A, Bisenieks E, Duburs G, Dzintare M, Goncharova R, Sjakste N. Genotoxic and genoprotective effects of 1,4-dihydropyridine derivatives: a brief review. Arh Hig Rada Toksikol 2023; 74:1-7. [PMID: 37014687 DOI: 10.2478/aiht-2023-74-3707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 03/01/2023] [Indexed: 04/05/2023] Open
Abstract
This review summarises current knowledge about the genotoxic and genoprotective effects of 1,4-dihydropyridines (DHP) with the main focus on the water-soluble 1,4-DHPs. Most of these water-soluble compounds manifest very low calcium channel blocking activity, which is considered "unusual" for 1,4-DHPs. Glutapyrone, diludine, and AV-153 decrease spontaneous mutagenesis and frequency of mutations induced by chemical mutagens. AV-153, glutapyrone, and carbatones protect DNA against the damage produced by hydrogen peroxide, radiation, and peroxynitrite. The ability of these molecules to bind to the DNA may not be the only mechanism of DNA protection, as other mechanisms such as radical scavenging or binding to other genotoxic compounds may take place and enhance DNA repair. These uncertainties and reports of high 1,4-DHP concentrations damaging the DNA call for further in vitro and in vivo preclinical research, pharmacokinetic in particular, as it can help pinpoint the exact mechanism(s) of the genotoxic and/or genoprotective action of 1,4-DHPs.
Collapse
Affiliation(s)
- Elina Leonova
- 1University of Latvia Faculty of Medicine, Medical Biochemistry Department, Riga, Latvia
| | - Nadezhda Ryabokon
- 2National Academy of Sciences of Belarus, Institute of Genetics and Cytology, Minsk, Belarus
| | - Evita Rostoka
- 1University of Latvia Faculty of Medicine, Medical Biochemistry Department, Riga, Latvia
| | - Vitalijs Borisovs
- 1University of Latvia Faculty of Medicine, Medical Biochemistry Department, Riga, Latvia
| | | | | | - Gunars Duburs
- 3Latvian Institute of Organic Synthesis, Riga, Latvia
| | - Maija Dzintare
- 4Latvian Academy of Sport Education, Department of Anatomy, Physiology, Biochemistry, Biomechanics, Hygiene and Informatics, Riga, Latvia
| | - Roza Goncharova
- 2National Academy of Sciences of Belarus, Institute of Genetics and Cytology, Minsk, Belarus
| | - Nikolajs Sjakste
- 1University of Latvia Faculty of Medicine, Medical Biochemistry Department, Riga, Latvia
| |
Collapse
|
2
|
Wang S, Li L, Liang Q, Ye Y, Lan Z, Dong Q, Chen A, Fu M, Li Y, Liu X, Ou JS, Lu L, Yan J. Deletion of SIRT6 in vascular smooth muscle cells facilitates vascular calcification via suppression of DNA damage repair. J Mol Cell Cardiol 2022; 173:154-168. [PMID: 36367517 DOI: 10.1016/j.yjmcc.2022.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 09/23/2022] [Accepted: 10/25/2022] [Indexed: 11/09/2022]
Abstract
Vascular calcification is an important risk factor for cardiovascular events, accompanied by DNA damage during the process. The sirtuin 6 (SIRT6) has been reported to alleviate atherosclerosis, which is related to the reduction of DNA damage. However, whether smooth muscle cell SIRT6 mediates vascular calcification involving DNA damage remains unclear. Western blot and immunofluorescence revealed that SIRT6 expression was decreased in human vascular smooth muscle cells (HVSMCs), human and mouse arteries during vascular calcification. Alizarin red staining and calcium content assay showed that knockdown or deletion of SIRT6 significantly promoted HVSMC calcification induced by high phosphorus and calcium, accompanied by upregulation of osteogenic differentiation markers including Runx2 and BMP2. By contrast, adenovirus-mediated SIRT6 overexpression attenuated osteogenic differentiation and calcification of HVSMCs. Moreover, ex vivo study revealed that SIRT6 overexpression inhibited calcification of mouse and human arterial rings. Of note, smooth muscle cell-specific knockout of SIRT6 markedly aggravated Vitamin D3-induced aortic calcification in mice. Mechanistically, overexpression of SIRT6 reduced DNA damage and upregulated p-ATM during HVSMCs calcification, whereas knockdown of SIRT6 showed the opposite effects. Knockdown of ATM in HVSMCs abrogated the inhibitory effect of SIRT6 overexpression on calcification and DNA damage. This study for the first time demonstrates that vascular smooth muscle cell-specific deletion of SIRT6 facilitates vascular calcification via suppression of DNA damage repair. Therefore, modulation of SIRT6 and DNA damage repair may represent a therapeutic strategy for vascular calcification.
Collapse
Affiliation(s)
- Siyi Wang
- Department of Cardiology, Laboratory of Heart Center, Heart Center, Zhujiang Hospital, Southern Medical University; Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation; Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou 510280, China
| | - Li Li
- Department of Cardiology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou 510220, China
| | - Qingchun Liang
- Department of Anesthesiology, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510665, China
| | - Yuanzhi Ye
- Department of Cardiology, Laboratory of Heart Center, Heart Center, Zhujiang Hospital, Southern Medical University; Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation; Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou 510280, China
| | - Zirong Lan
- Department of Cardiology, Laboratory of Heart Center, Heart Center, Zhujiang Hospital, Southern Medical University; Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation; Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou 510280, China
| | - Qianqian Dong
- Department of Cardiology, Laboratory of Heart Center, Heart Center, Zhujiang Hospital, Southern Medical University; Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation; Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou 510280, China
| | - An Chen
- Department of Cardiology, Laboratory of Heart Center, Heart Center, Zhujiang Hospital, Southern Medical University; Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation; Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou 510280, China
| | - Mingwei Fu
- Department of Cardiology, Laboratory of Heart Center, Heart Center, Zhujiang Hospital, Southern Medical University; Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation; Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou 510280, China
| | - Yining Li
- Department of Cardiology, Laboratory of Heart Center, Heart Center, Zhujiang Hospital, Southern Medical University; Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation; Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou 510280, China
| | - Xiaoyu Liu
- Department of Cardiology, Laboratory of Heart Center, Heart Center, Zhujiang Hospital, Southern Medical University; Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation; Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou 510280, China
| | - Jing-Song Ou
- Division of Cardiac Surgery, National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC key Laboratory of Assisted Circulation, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Lihe Lu
- Department of Pathophysiolgy, Zhongshan Medical School, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Jianyun Yan
- Department of Cardiology, Laboratory of Heart Center, Heart Center, Zhujiang Hospital, Southern Medical University; Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation; Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou 510280, China.
| |
Collapse
|
3
|
Leonova E, Shvirksts K, Borisovs V, Smelovs E, Sokolovska J, Bisenieks E, Duburs G, Grube M, Sjakste N. Spectroscopic and electrochemical study of interactions between DNA and different salts of 1,4-dihydropyridine AV-153. PeerJ 2020; 8:e10061. [PMID: 33240591 PMCID: PMC7664466 DOI: 10.7717/peerj.10061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 09/08/2020] [Indexed: 01/28/2023] Open
Abstract
1,4-dihydropyridines (1,4-DHP) possess important biochemical and pharmacological properties, including antimutagenic and DNA-binding activity. The latter activity was first described for water-soluble 1,4-DHP with carboxylic group in position 4, the sodium salt of the 1,4-DHP derivative AV-153 among others. Some data show the modification of physicochemical properties and biological activities of organic compounds by metal ions that form the salts. We demonstrated the different affinity to DNA and DNA-protecting capacity of AV-153 salts, depending on the salt-forming ion (Na, K, Li, Rb, Ca, Mg). This study aimed to use different approaches to collate data on the DNA-binding mode of AV-153-Na and five other AV-153 salts. All the AV-153 salts in this study quenched the ethidium bromide and DNA complex fluorescence, which points to an intercalation binding mode. For some of them, the intercalation binding was confirmed using cyclic voltammetry and circular dichroism spectroscopy. It was shown that in vitro all AV-153 salts can interact with four DNA bases. The FTIR spectroscopy data showed the interaction of AV-153 salts with both DNA bases and phosphate groups. A preference for base interaction was observed as the AV-153 salts interacted mostly with G and C bases. However, the highest differences were detected in the spectral region assigned to phosphate groups, which might indicate either conformational changes of DNA molecule (B form to A or H form) or partial denaturation of the molecule. According to the UV/VIS spectroscopy data, the salts also interact with the human telomere repeat, both in guanine quadruplex (G4) and single-stranded form; Na and K salts manifested higher affinity to G4, Li and Rb -to single-stranded DNA.
Collapse
Affiliation(s)
- Elina Leonova
- Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Karlis Shvirksts
- Institute of Microbiology and Biotechnology, University of Latvia, Riga, Latvia
| | - Vitalijs Borisovs
- Faculty of Medicine, University of Latvia, Riga, Latvia.,Latvian Institute of Organic Synthesis, Riga, Latvia
| | | | | | | | - Gunars Duburs
- Latvian Institute of Organic Synthesis, Riga, Latvia
| | - Mara Grube
- Institute of Microbiology and Biotechnology, University of Latvia, Riga, Latvia
| | - Nikolajs Sjakste
- Faculty of Medicine, University of Latvia, Riga, Latvia.,Latvian Institute of Organic Synthesis, Riga, Latvia
| |
Collapse
|
4
|
Leonova E, Ošiņa K, Duburs G, Bisenieks E, Germini D, Vassetzky Y, Sjakste N. Metal ions modify DNA-protecting and mutagen-scavenging capacities of the AV-153 1,4-dihydropyridine. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2019; 845:403077. [PMID: 31561891 DOI: 10.1016/j.mrgentox.2019.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 06/19/2019] [Accepted: 06/28/2019] [Indexed: 11/30/2022]
Abstract
1,4-Dihydropyridines (1,4-DHP) possess important biochemical and pharmacological properties, including antioxidant and antimutagenic activities. AV-153-Na, an antimutagenic and DNA-repair enhancing compound was shown to interact with DNA by intercalation. Here we studied DNA binding of several AV-153 salts to evaluate the impact of AV-153 modifications on its DNA binding capacity, the ability to scavenge the peroxynitrite, to protect HeLa and B-cells cells against DNA damage. Affinity of the AV-153 salts to DNA measured by a fluorescence assay was dependent on the metal ion forming a salt in position 4 of the 1,4-DHP, and it decreased as follows: Mg > Na > Ca > Li > Rb > K. AV-153-K and AV-153-Rb could not react chemically with peroxynitrite as opposed to AV-153-Mg and AV-153-Ca, the latter increased the decomposition rate of peroxynitrite. AV-153-Na and AV-153-Ca effectively reduced DNA damage induced by peroxynitrite in HeLa cells, while AV-153-K and AV-153-Rb were less effective, AV-153-Li did not protect the DNA, and AV-153-Mg even caused DNA damage itself. The Na, K, Ca and Mg AV-153 salts were also shown to reduce the level of DNA damage in human B-cells from healthy donors. Thus, metal ions modify both DNA-binding and DNA-protecting effects of the AV-153 salts.
Collapse
Affiliation(s)
- Elina Leonova
- University of Latvia, Jelgavas Street 1, Riga, LV1004, Latvia; Latvian Institute of Organic Synthesis, No. 21 Aizkraukles Street, Riga LV-1006, Latvia.
| | - Kristīne Ošiņa
- University of Latvia, Jelgavas Street 1, Riga, LV1004, Latvia.
| | - Gunars Duburs
- Latvian Institute of Organic Synthesis, No. 21 Aizkraukles Street, Riga LV-1006, Latvia.
| | - Egils Bisenieks
- Latvian Institute of Organic Synthesis, No. 21 Aizkraukles Street, Riga LV-1006, Latvia.
| | - Diego Germini
- Nuclear Organization and Pathologies, CNRS UMR-8126, Institut Gustave Roussy, 39, rue Camille-Desmoulins, 94805 Villejuif, France.
| | - Yegor Vassetzky
- Nuclear Organization and Pathologies, CNRS UMR-8126, Institut Gustave Roussy, 39, rue Camille-Desmoulins, 94805 Villejuif, France.
| | - Nikolajs Sjakste
- University of Latvia, Jelgavas Street 1, Riga, LV1004, Latvia; Latvian Institute of Organic Synthesis, No. 21 Aizkraukles Street, Riga LV-1006, Latvia.
| |
Collapse
|
5
|
Milkovic L, Vukovic T, Zarkovic N, Tatzber F, Bisenieks E, Kalme Z, Bruvere I, Ogle Z, Poikans J, Velena A, Duburs G. Antioxidative 1,4-Dihydropyridine Derivatives Modulate Oxidative Stress and Growth of Human Osteoblast-Like Cells In Vitro. Antioxidants (Basel) 2018; 7:antiox7090123. [PMID: 30235855 PMCID: PMC6162383 DOI: 10.3390/antiox7090123] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 09/06/2018] [Accepted: 09/15/2018] [Indexed: 12/20/2022] Open
Abstract
Oxidative stress has been implicated in pathophysiology of different human stress- and age-associated disorders, including osteoporosis for which antioxidants could be considered as therapeutic remedies as was suggested recently. The 1,4-dihydropyridine (DHP) derivatives are known for their pleiotropic activity, with some also acting as antioxidants. To find compounds with potential antioxidative activity, a group of 27 structurally diverse DHPs, as well as one pyridine compound, were studied. A group of 11 DHPs with 10-fold higher antioxidative potential than of uric acid, were further tested in cell model of human osteoblast-like cells. Short-term combined effects of DHPs and 50 µM H2O2 (1-h each), revealed better antioxidative potential of DHPs if administered before a stressor. Indirect 24-h effect of DHPs was evaluated in cells further exposed to mild oxidative stress conditions induced either by H2O2 or tert-butyl hydroperoxide (both 50 µM). Cell growth (viability and proliferation), generation of ROS and intracellular glutathione concentration were evaluated. The promotion of cell growth was highly dependent on the concentrations of DHPs used, type of stressor applied and treatment set-up. Thiocarbatone III-1, E2-134-1 III-4, Carbatone II-1, AV-153 IV-1, and Diethone I could be considered as therapeutic agents for osteoporosis although further research is needed to elucidate their bioactivity mechanisms, in particular in respect to signaling pathways involving 4-hydroxynoneal and related second messengers of free radicals.
Collapse
Affiliation(s)
- Lidija Milkovic
- Laboratory for Oxidative Stress, Rudjer Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia.
| | - Tea Vukovic
- Laboratory for Oxidative Stress, Rudjer Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia.
| | - Neven Zarkovic
- Laboratory for Oxidative Stress, Rudjer Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia.
| | - Franz Tatzber
- Institute of Pathophysiology and Immunology, Medical University of Graz, A-8036 Graz, Austria.
| | - Egils Bisenieks
- Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006 Riga, Latvia.
| | - Zenta Kalme
- Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006 Riga, Latvia.
| | - Imanta Bruvere
- Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006 Riga, Latvia.
| | - Zaiga Ogle
- Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006 Riga, Latvia.
| | - Janis Poikans
- Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006 Riga, Latvia.
| | - Astrida Velena
- Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006 Riga, Latvia.
| | - Gunars Duburs
- Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006 Riga, Latvia.
| |
Collapse
|
6
|
Leonova E, Rostoka E, Sauvaigo S, Baumane L, Selga T, Sjakste N. Study of interaction of antimutagenic 1,4-dihydropyridine AV-153-Na with DNA-damaging molecules and its impact on DNA repair activity. PeerJ 2018; 6:e4609. [PMID: 29713564 PMCID: PMC5923214 DOI: 10.7717/peerj.4609] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 03/22/2018] [Indexed: 12/20/2022] Open
Abstract
Background 1,4-dihydropyridines (1,4-DHP) possesses important biochemical and pharmacological properties, including antioxidant and antimutagenic activities. It was shown that the antimutagenic 1,4-dihydropyridine AV-153-Na interacts with DNA. The aim of the current study was to test the capability of the compound to scavenge peroxynitrite and hydroxyl radical, to test intracellular distribution of the compound, and to assess the ability of the compound to modify the activity of DNA repair enzymes and to protect the DNA in living cells against peroxynitrite-induced damage. Methods Peroxynitrite decomposition was assayed by UV spectroscopy, hydroxyl radical scavenging—by EPR spectroscopy. DNA breakage was determined by the “comet method”, activity of DNA repair enzymes—using Glyco-SPOT and ExSy-SPOT assays. Intracellular distribution of the compound was studied by laser confocal scanning fluorescence microscopy. Fluorescence spectroscopy titration and circular dichroism spectroscopy were used to study interactions of the compound with human serum albumin. Results Some ability to scavenge hydroxyl radical by AV-153-Na was detected by the EPR method, but it turned out to be incapable of reacting chemically with peroxynitrite. However, AV-153-Na effectively decreased DNA damage produced by peroxynitrite in cultured HeLa cells. The Glyco-SPOT test essentially revealed an inhibition by AV-153-Na of the enzymes involved thymine glycol repair. Results with ExSy-SPOT chip indicate that AV-153-Na significantly stimulates excision/synthesis repair of 8-oxoguanine (8-oxoG), abasic sites (AP sites) and alkylated bases. Laser confocal scanning fluorescence microscopy demonstrated that within the cells AV-153-Na was found mostly in the cytoplasm; however, a stain in nucleolus was also detected. Binding to cytoplasmic structures might occur due to high affinity of the compound to proteins revealed by spectroscopical methods. Discussion Activation of DNA repair enzymes after binding to DNA appears to be the basis for the antimutagenic effects of AV-153-Na.
Collapse
Affiliation(s)
- Elina Leonova
- Faculty of Medicine, University of Latvia, Riga, Latvia.,Latvian Institute of Organic Synthesis, Riga, Latvia
| | - Evita Rostoka
- Faculty of Medicine, University of Latvia, Riga, Latvia.,Latvian Institute of Organic Synthesis, Riga, Latvia
| | | | | | - Turs Selga
- Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Nikolajs Sjakste
- Faculty of Medicine, University of Latvia, Riga, Latvia.,Latvian Institute of Organic Synthesis, Riga, Latvia
| |
Collapse
|
7
|
Dihydropyridine Derivatives as Cell Growth Modulators In Vitro. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:4069839. [PMID: 28473879 PMCID: PMC5394904 DOI: 10.1155/2017/4069839] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 02/20/2017] [Indexed: 01/26/2023]
Abstract
The effects of eleven 1,4-dihydropyridine derivatives (DHPs) used alone or together with prooxidant anticancer drug doxorubicin were examined on two cancer (HOS, HeLa) and two nonmalignant cell lines (HMEC, L929). Their effects on the cell growth (3H-thymidine incorporation) were compared with their antiradical activities (DPPH assay), using well-known DHP antioxidant diludine as a reference. Thus, tested DHPs belong to three groups: (1) antioxidant diludine; (2) derivatives with pyridinium moieties at position 4 of the 1,4-DHP ring; (3) DHPs containing cationic methylene onium (pyridinium, trialkylammonium) moieties at positions 2 and 6 of the 1,4-DHP ring. Diludine and DHPs of group 3 exerted antiradical activities, unlike compounds of group 2. However, novel DHPs had cell type and concentration dependent effects on 3H-thymidine incorporation, while diludine did not. Hence, IB-32 (group 2) suppressed the growth of HOS and HeLa, enhancing growth of L929 cells, while K-2-11 (group 3) enhanced growth of every cell line tested, even in the presence of doxorubicin. Therefore, growth regulating and antiradical activity principles of novel DHPs should be further studied to find if DHPs of group 2 could selectively suppress cancer growth and if those of group 3 promote wound healing.
Collapse
|
8
|
Ošiņa K, Rostoka E, Isajevs S, Sokolovska J, Sjakste T, Sjakste N. Effects of an Antimutagenic 1,4-Dihydropyridine AV-153 on Expression of Nitric Oxide Synthases and DNA Repair-related Enzymes and Genes in Kidneys of Rats with a Streptozotocin Model of Diabetes Mellitus. Basic Clin Pharmacol Toxicol 2016; 119:458-463. [PMID: 27163882 DOI: 10.1111/bcpt.12617] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 04/25/2016] [Indexed: 12/19/2022]
Abstract
Development of complications of diabetes mellitus (DM), including diabetic nephropathy, is a complex multi-stage process, dependent on many factors including the modification of nitric oxide (NO) production and an impaired DNA repair. The goal of this work was to study in vivo effects of 1,4-dihydropyridine AV-153, known as antimutagen and DNA binder, on the expression of several genes and proteins involved in NO metabolism and DNA repair in the kidneys of rats with a streptozotocin (STZ)-induced model of DM. Transcription intensity was monitored by means of real-time RT-PCR and the expression of proteins by immunohistochemistry. Development of DM significantly induced PARP1 protein expression, while AV-153 (0.5 mg/kg) administration decreased it. AV-153 increased the expression of Parp1 gene in the kidneys of both intact and diabetic animals. Expression of H2afx mRNA and γH2AX histone protein, a marker of DNA breakage, was not changed in diabetic animals, but AV-153 up-regulated the expression of the gene without any impact on the protein expression. Development of DM was followed by a significant increase in iNOS enzyme expression, while AV-153 down-regulated the enzyme expression up to normal levels. iNos gene expression was also found to be increased in diabetic animals, but unlike the protein, the expression of mRNA was found to be enhanced by AV-153 administration. Expression of both eNOS protein and eNos gene in the kidneys was down-regulated, and the administration of AV-153 normalized the expression level. The effects of the compound in the kidneys of diabetic animals appear to be beneficial, as a trend for the normalization of expression of NO synthases is observed.
Collapse
Affiliation(s)
- Kristīne Ošiņa
- Latvian Institute of Organic Synthesis, Riga, Latvia. .,Genomics and Bioinformatics, Institute of Biology of the University of Latvia, Salaspils, Latvia.
| | - Evita Rostoka
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Sergejs Isajevs
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Jelizaveta Sokolovska
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Tatjana Sjakste
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Genomics and Bioinformatics, Institute of Biology of the University of Latvia, Salaspils, Latvia
| | - Nikolajs Sjakste
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Medicine, University of Latvia, Riga, Latvia
| |
Collapse
|
9
|
Sandjo LP, Kuete V, Nana F, Kirsch G, Efferth T. Synthesis and Cytotoxicity of 1,4-Dihydropyridines and an Unexpected 1,3-Oxazin-6-one. Helv Chim Acta 2016. [DOI: 10.1002/hlca.201500265] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Louis Pergaud Sandjo
- Department of Pharmaceutical Sciences; CCS - Universidade Federal de Santa Catarina; Trindade 88040-900 Florianópolis SC Brazil
| | - Victor Kuete
- Department of Biochemistry; University of Dschang; P.O. Box 67 Dschang Cameroon
- Department of Pharmaceutical Biology; Institute of Pharmacy and Biochemistry; University of Mainz; Staudinger Weg 5 DE-55128 Mainz
| | - Frederic Nana
- UMR-SRSMC 7565; University of Lorraine; Molecular Engineering Laboratory and Formerly Pharmacological Biochemistry; 1 Boulevard Arago FR-57070 Metz Technopôle
| | - Gilbert Kirsch
- UMR-SRSMC 7565; University of Lorraine; Molecular Engineering Laboratory and Formerly Pharmacological Biochemistry; 1 Boulevard Arago FR-57070 Metz Technopôle
| | - Thomas Efferth
- Department of Pharmaceutical Biology; Institute of Pharmacy and Biochemistry; University of Mainz; Staudinger Weg 5 DE-55128 Mainz
| |
Collapse
|
10
|
Leonova E, Sokolovska J, Boucher JL, Isajevs S, Rostoka E, Baumane L, Sjakste T, Sjakste N. New 1,4-Dihydropyridines Down-regulate Nitric Oxide in Animals with Streptozotocin-induced Diabetes Mellitus and Protect Deoxyribonucleic Acid against Peroxynitrite Action. Basic Clin Pharmacol Toxicol 2016; 119:19-31. [PMID: 26663724 DOI: 10.1111/bcpt.12542] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 12/03/2015] [Indexed: 12/11/2022]
Abstract
Diabetes mellitus (DM) and its complications cause numerous health and social problems throughout the world. Pathogenic actions of nitric oxide (NO) are responsible to a large extent for development of complications of DM. Search for compounds regulating NO production in patients with DM is thus important for the development of pharmacological drugs. Dihydropyridines (1,4-DHPs) are prospective compounds from this point of view. The goals of this study were to study the in vivo effects of new DHPs on NO and reactive nitrogen and oxygen species production in a streptozotocin (STZ)-induced model of DM in rats and to study their ability to protect DNA against nocive action of peroxynitrite. STZ-induced diabetes caused an increase in NO production in the liver, kidneys, blood and muscles, but a decrease in NO in adipose tissue of STZ-treated animals. Cerebrocrast treatment was followed by normalization of NO production in the liver, kidneys and blood. Two other DHPs, etaftorone and fenoftorone, were effective in decreasing NO production in kidneys, blood and muscles of diabetic animals. Furthermore, inhibitors of nitric oxide synthase (NOS) and an inhibitor of xanthine oxidoreductase (XOR) decreased NO production in kidneys of diabetic animals. Treatment with etaftorone decreased expression of inducible NOS and XOR in kidneys, whereas it increased the expression of endothelial NOS. In vitro, the studied DHPs did not significantly inhibit the activities of NOS and XOR but affected the reactivity of peroxynitrite with DNA. These new DHPs thus appear of strong interest for treatment of DM complications.
Collapse
Affiliation(s)
- Elina Leonova
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Medical Biochemistry Department, Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Jelizaveta Sokolovska
- Medical Biochemistry Department, Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Jean-Luc Boucher
- Laboratory for Chemistry and Biochemistry for Pharmacology and Toxicology, CNRS UMR 8601, University Rene Descartes, Paris, France
| | - Sergejs Isajevs
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Medical Biochemistry Department, Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Evita Rostoka
- Latvian Institute of Organic Synthesis, Riga, Latvia
| | | | - Tatjana Sjakste
- Genomics and Bioinformatics, Institute of Biology of the University of Latvia, Salaspils, Latvia
| | - Nikolajs Sjakste
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Medical Biochemistry Department, Faculty of Medicine, University of Latvia, Riga, Latvia
| |
Collapse
|
11
|
Mohamed MF, Darweesh AF, Elwahy AHM, Abdelhamid IA. Synthesis, characterization and antitumor activity of novel tetrapodal 1,4-dihydropyridines: p53 induction, cell cycle arrest and low damage effect on normal cells induced by genotoxic factor H2O2. RSC Adv 2016. [DOI: 10.1039/c6ra04974e] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Synthesis of novel tetrakis(2,6-dimethyl-4-phenyl-1,4-dihydropyridinyl)methanes5a–dby acid-catalyzed condensation of the tetrakis-aldehydes6a–dwith eight equivalents of 3-aminobut-2-enenitrile2is reported. Antitumor activities of compounds5a–dwere also investigated.
Collapse
Affiliation(s)
- Magda F. Mohamed
- Chemistry Department (Biochemistry Branch)
- Faculty of Science
- Cairo University
- Giza
- Egypt
| | | | | | | |
Collapse
|
12
|
Ajavakom V, Yutthaseri T, Ajavakom A. Natural Tetrahydrocurcumin in Multi-Component Synthesis of 1,4-Dihydropyridine Derivatives. HETEROCYCLES 2016. [DOI: 10.3987/com-16-13500] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
13
|
Ošiņa K, Rostoka E, Sokolovska J, Paramonova N, Bisenieks E, Duburs G, Sjakste N, Sjakste T. 1,4-Dihydropyridine derivatives without Ca2+-antagonist activity up-regulate Psma6 mRNA expression in kidneys of intact and diabetic rats. Cell Biochem Funct 2015; 34:3-6. [PMID: 26634809 DOI: 10.1002/cbf.3160] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 11/12/2015] [Accepted: 11/16/2015] [Indexed: 12/26/2022]
Abstract
Impaired degradation of proteins by the ubiquitin-proteasome system (UPS) is observed in numerous pathologies including diabetes mellitus (DM) and its complications. Dysregulation of proteasomal degradation might be because of altered expression of genes and proteins involved in the UPS. The search for novel compounds able to normalize expression of the UPS appears to be a topical problem. A novel group of 1,4-dihydropyridine (1,4-DHP) derivatives lacking Ca2+-antagonists activities, but capable to produce antidiabetic, antioxidant and DNA repair enhancing effects, were tested for ability to modify Psma6 mRNA expression levels in rat kidneys and blood in healthy animals and in rats with streptozotocin (STZ) induced DM. Psma6 gene was chosen for the study, as polymorphisms of its human analogue are associated with DM and cardiovascular diseases. 1,4-DHP derivatives (metcarbatone, etcarbatone, glutapyrone, J-9-125 and AV-153-Na) were administered per os for three days (0.05 mg/kg and/or 0.5 mg/kg). Psma6 gene expression levels were evaluated by quantitative PCR. Psma6 expression was higher in kidneys compared to blood. Induction of diabetes caused increase of Psma6 expression in kidneys, although it was not changed in blood. Several 1,4-DHP derivatives increased expression of the gene both in kidneys and blood of control and model animals, but greater impact was observed in kidneys. The observed effect might reflect coupling of antioxidant and proteolysis-promoting activities of the compounds.
Collapse
Affiliation(s)
- Kristīne Ošiņa
- Genomics and Bioinformatics Group, Institute of Biology of the University of Latvia, Salaspils, Latvia
| | - Evita Rostoka
- Latvian Institute of Organic Synthesis, Riga, Latvia
| | | | - Natalia Paramonova
- Genomics and Bioinformatics Group, Institute of Biology of the University of Latvia, Salaspils, Latvia
| | | | - Gunars Duburs
- Latvian Institute of Organic Synthesis, Riga, Latvia
| | | | - Tatjana Sjakste
- Genomics and Bioinformatics Group, Institute of Biology of the University of Latvia, Salaspils, Latvia
| |
Collapse
|
14
|
Goba I, Turovska B, Belyakov S, Liepinsh E. Synthesis, spectroscopic and conformational analysis of 1,4-dihydroisonicotinic acid derivatives. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.06.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
15
|
Buraka E, Chen CYC, Gavare M, Grube M, Makarenkova G, Nikolajeva V, Bisenieks I, Brūvere I, Bisenieks E, Duburs G, Sjakste N. DNA-binding studies of AV-153, an antimutagenic and DNA repair-stimulating derivative of 1,4-dihydropiridine. Chem Biol Interact 2014; 220:200-7. [PMID: 25016077 DOI: 10.1016/j.cbi.2014.06.027] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 06/20/2014] [Accepted: 06/30/2014] [Indexed: 01/24/2023]
Abstract
UNLABELLED The ability to intercalate between DNA strands determines the cytotoxic activity of numerous anticancer drugs. Strikingly, intercalating activity was also reported for some compounds considered to be antimutagenic. The aim of this study was to determine the mode of interaction of DNA with the antimutagenic and DNA repair-stimulating dihydropyridine (DHP) AV-153. DNA and AV-153 interactions were studied by means of UV/VIS spectroscopy, fluorimetry and infrared spectroscopy. Compound AV-153 is a 1,4 dihydropyridine with ethoxycarbonyl groups in positions 3 and 5. Computer modeling of AV-153 and DNA interactions suggested an ability of the compound to dock between DNA strands at a single strand break site in the vicinity of two pyrimidines, which was confirmed in the present study. AV-153 evidently interacted with DNA, as addition of DNA to AV-153 solutions resulted in pronounced hyperchromic and bathochromic effects on the spectra. Base modification in a plasmid by peroxynitrite only minimally changed binding affinity of the compound; however, induction of single-strand breaks using Fenton's reaction greatly increased binding affinity. The affinity did not change when the ionic strength of the solution was changed from 5 to 150 mM NaCl, although it increased somewhat at 300 mM. Neither was it influenced by temperature changes from 25 to 40°C, however, it decreased when the pH of the solution was changed from 7.4 to 4.7. AV-153 competed with EBr for intercalation sites in DNA: 116 mM of the compound caused a two-fold decrease in fluorescence intensity. FT-IR spectral data analyses indicated formation of complexes between DNA and AV-153. The second derivative spectra analyses indicated interaction of AV-153 with guanine, cytosine and thymine bases, but no interaction with adenine was detected. CONCLUSIONS The antimutagenic substance AV-153 appears to intercalate between the DNA strands at the site of a DNA nick in the vicinity of two pyrimidines.
Collapse
Affiliation(s)
- E Buraka
- Department of Medical Biochemistry, Faculty of Medicine, University of Latvia, No. 4 Kronvalda Boulevard, Riga LV-1010, Latvia; Latvian Institute of Organic Synthesis, No. 21 Aizkraukles Street, Riga LV-1006, Latvia
| | - C Yu-Chian Chen
- Laboratory of Computational and Systems Biology, School of Chinese Medicine, China Medical University, Taichung 40402, Taiwan; Department of Bioinformatics, Asia University, Taichung 41354, Taiwan
| | - M Gavare
- Institute of Microbiology and Biotechnology, University of Latvia, No. 4 Kronvalda Boulevard, Riga LV-1010, Latvia
| | - M Grube
- Institute of Microbiology and Biotechnology, University of Latvia, No. 4 Kronvalda Boulevard, Riga LV-1010, Latvia
| | - G Makarenkova
- Faculty of Biology, University of Latvia, No. 4 Kronvalda Boulevard, Riga LV-1010, Latvia
| | - V Nikolajeva
- Faculty of Biology, University of Latvia, No. 4 Kronvalda Boulevard, Riga LV-1010, Latvia
| | - I Bisenieks
- Latvian Institute of Organic Synthesis, No. 21 Aizkraukles Street, Riga LV-1006, Latvia
| | - I Brūvere
- Latvian Institute of Organic Synthesis, No. 21 Aizkraukles Street, Riga LV-1006, Latvia
| | - E Bisenieks
- Latvian Institute of Organic Synthesis, No. 21 Aizkraukles Street, Riga LV-1006, Latvia
| | - G Duburs
- Latvian Institute of Organic Synthesis, No. 21 Aizkraukles Street, Riga LV-1006, Latvia
| | - N Sjakste
- Department of Medical Biochemistry, Faculty of Medicine, University of Latvia, No. 4 Kronvalda Boulevard, Riga LV-1010, Latvia; Latvian Institute of Organic Synthesis, No. 21 Aizkraukles Street, Riga LV-1006, Latvia.
| |
Collapse
|
16
|
Sarkarzadeh H, Miri R, Firuzi O, Amini M, Razzaghi-Asl N, Edraki N, Shafiee A. Synthesis and antiproliferative activity evaluation of imidazole-based indeno[1,2-b]quinoline-9,11-dione derivatives. Arch Pharm Res 2013; 36:436-47. [PMID: 23440577 DOI: 10.1007/s12272-013-0032-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 02/07/2013] [Indexed: 11/24/2022]
Abstract
A series of new imidazole substituted indeno[1,2-b]quinoline-9,11-dione derivatives were synthesized and evaluated for their antiproliferative effects on HeLa, LS180, MCF-7 and Jurkat human cancer cell lines. Antiproliferative effects were evaluated using MTT assay. Prepared compounds exhibited weak to good antiproliferative activity in evaluated cell lines. Prepared compounds were more potent in Jurkat cell line when compared to LS180, HeLa and MCF-7 cell lines. Compounds 29 (IC16 = 0.7 μM) and 31 (IC16 = 1.7 μM) and 33 (IC16 = 1.7 μM) were found to be the most potent molecules on Jurkat cell lines. Moreover; it was found that some of the tested compounds bearing imidazole-2-yl moiety on the C11-position of dihydropyridine ring exhibited superior antiproliferative activity in comparison to cis-platin especially in Jurkat cell line (compounds 29, 31, and 33). It seemed that the introduction of electron-withdrawing groups on the imidazole ring enhanced the antiproliferative potential of these compounds (compounds 27, 29 and 31). The results of this study proposed that some of the imidazole substituted indeno[1,2-b]quinoline-9,11-dione compounds may act as efficient anticancer agents in vitro, emphasizing their potential role as a source for rational design of potent antiproliferative agents.
Collapse
Affiliation(s)
- Hasti Sarkarzadeh
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, 14176, Tehran, Iran
| | | | | | | | | | | | | |
Collapse
|
17
|
Abstract
A good range of 1,4-dihydropyridines bearing a carbamate moiety on the 4-position were synthesized from the primary reaction of different hydroxyaldehydes with phenyl isocyanates and the subsequent reaction of the obtained carbamates with methyl acetoacetate in the presence of ammonium fluoride. When phenyl isothiocyanate was used in place of phenyl isocyanate in the same condition, the reaction did not take place.
Collapse
|
18
|
Yadav DK, Patel R, Srivastava VP, Watal G, Yadav LDS. LiBr as an Efficient Catalyst for One-pot Synthesis of Hantzsch 1,4-Dihydropyridines under Mild Conditions. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201190036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
19
|
Wojewódzka M, Gradzka I, Buraczewska I, Brzóska K, Sochanowicz B, Goncharova R, Kuzhir T, Szumiel I. Dihydropyridines decrease X-ray-induced DNA base damage in mammalian cells. Mutat Res 2009; 671:45-51. [PMID: 19737572 DOI: 10.1016/j.mrfmmm.2009.08.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2009] [Revised: 07/23/2009] [Accepted: 08/26/2009] [Indexed: 05/28/2023]
Abstract
Compounds with the structural motif of 1,4-dihydropyridine display a broad spectrum of biological activities, often defined as bioprotective. Among them are L-type calcium channel blockers, however, also derivatives which do not block calcium channels exert various effects at the cellular and organismal levels. We examined the effect of sodium 3,5-bis-ethoxycarbonyl-2,6-dimethyl-1,4-dihydropyridine-4-carboxylate (denoted here as DHP and previously also as AV-153) on X-ray-induced DNA damage and mutation frequency at the HGPRT (hypoxanthine-guanine phosphoribosyl transferase) locus in Chinese hamster ovary CHO-K1 cells. Using formamido-pyrimidine glycosylase (FPG) comet assay, we found that 1-h DHP (10nM) treatment before X-irradiation considerably reduced the initial level of FPG-recognized DNA base damage, which was consistent with decreased 8-oxo-7,8-dihydro-2'-deoxyguanosine content and mutation frequency lowered by about 40%. No effect on single strand break rejoining or on cell survival was observed. Similar base damage-protective effect was observed for two calcium channel blockers: nifedipine (structurally similar to DHP) or verapamil (structurally unrelated). So far, the specificity of the DHP-caused reduction in DNA damage - practically limited to base damage - has no satisfactory explanation.
Collapse
Affiliation(s)
- M Wojewódzka
- Center of Radiobiology and Biological Dosimetry, Institute of Nuclear Chemistry and Technology, Warszawa, Poland.
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Modulation of cellular defense processes in human lymphocytes in vitro by a 1,4-dihydropyridine derivative. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2009; 679:33-8. [DOI: 10.1016/j.mrgentox.2009.07.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2009] [Revised: 06/18/2009] [Accepted: 07/16/2009] [Indexed: 11/22/2022]
|
21
|
Anniversaries and dates. Chem Heterocycl Compd (N Y) 2009. [DOI: 10.1007/s10593-009-0307-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
22
|
Ryabokon NI, Goncharova RI, Duburs G, Hancock R, Rzeszowska-Wolny J. Changes in poly(ADP-ribose) level modulate the kinetics of DNA strand break rejoining. Mutat Res 2007; 637:173-81. [PMID: 17935742 DOI: 10.1016/j.mrfmmm.2007.08.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2007] [Revised: 07/16/2007] [Accepted: 08/07/2007] [Indexed: 12/20/2022]
Abstract
ADP-ribose polymers are rapidly synthesized in cell nuclei by the poly(ADP-ribose) polymerases PARP-1 and PARP-2 in response to DNA strand interruptions, using NAD(+) as precursor. The level of induced poly(ADP-ribose) formation is proportional to the level of DNA damage and can be decreased by NAD(+) or PARP deficiency, followed by poor DNA repair and genomic instability. Here we studied the correlation between poly(ADP-ribose) level and DNA strand break repair in lymphoblastoid Raji cells. Poly(ADP-ribose) synthesis was induced by 100 microM H(2)O(2) and intensified by the 1,4-dihydropyridine derivative AV-153. The level of poly(ADP-ribose) in individual cells was analyzed by quantitative in situ immunofluorescence and confirmed in whole-cell extracts by Western blotting, and DNA damage was assessed by alkaline comet assays. Cells showed a approximately 100-fold increase in poly(ADP-ribose) formation during the first 5 min of recovery from H(2)O(2) treatment, followed by a gradual decrease up to 15 min. This synthesis was completely inhibited by the PARP inhibitor NU1025 (100 microM) while the cells treated with AV-153, at non-genotoxic concentrations of 1 nM-10 microM, showed a concentration-dependent increase of poly(ADP-ribose) level up to 130% after the first minute of recovery. The transient increase in poly(ADP-ribose) level was strongly correlated with the speed and efficiency of DNA strand break rejoining (correlation coefficient r > or = 0.92, p<0.05). These results are consistent with the idea that poly(ADP-ribose) formation immediately after genome damage reflects rapid assembly and efficient functioning of repair machinery.
Collapse
Affiliation(s)
- Nadezhda I Ryabokon
- Department of Experimental and Clinical Radiobiology, M Sklodowska-Curie Memorial Cancer Center and Institute, Wybrzeze Armii Krajowej 15, 44-101, Gliwice, Poland
| | | | | | | | | |
Collapse
|
23
|
Borovic S, Tirzitis G, Tirzite D, Cipak A, Khoschsorur GA, Waeg G, Tatzber F, Scukanec-Spoljar M, Zarkovic N. Bioactive 1,4-dihydroisonicotinic acid derivatives prevent oxidative damage of liver cells. Eur J Pharmacol 2006; 537:12-9. [PMID: 16600211 DOI: 10.1016/j.ejphar.2006.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2005] [Revised: 02/28/2006] [Accepted: 03/06/2006] [Indexed: 11/23/2022]
Abstract
1,4-Dihydroisonicotinic acid derivatives (1,4-DHINA) are compounds closely related to derivatives of 1,4-dihydropyridine, a well-known calcium channel antagonists. 1,4-DHINA we used were derived from a well-known antioxidant Diludin. Although some compounds have neuromodulatory or antimutagenic properties, their activity mechanisms are not well known. This study was performed to obtain data on antioxidant and bioprotective activities of: 2,6-dimethyl-3,5-diethoxycarbonyl-1,4-dihydroisonicotinic acid (Ia); sodium 2-(2,6-dimethyl-3,5-diethoxycarbonyl-1,4-dihydropyridine-4-carboxamido)glutamate (Ib) and sodium 2-(2,6-dimethyl-3,5-diethoxycarbonyl-1,4-dihydropyridine-4-carboxamido)ethane-sulphate (Ic). 1,4-DHINA's activities were studied in comparison to Trolox by: N,N-Diphenyl-N'-picrylhydrazyl (DPPH*), deoxyribose degradation, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) diammonium salt (ABTS) radical scavenging and antioxidative capacity assays; copper-induced lipid peroxidation of cultured rat liver cells (malondialdehyde determination by high performance liquid chromatography and 4-hydroxynonenal-protein conjugates by dot-blot); (3)H-thymidine incorporation and trypan blue assay for liver cells growth and viability. In all assays used Ia was the most potent antioxidant. Ia was also a potent antioxidant at non-toxic concentrations for liver cell cultures. It completely abolished, while Ic only slightly decreased copper-induced lipid peroxidation of liver cells. Thus, antioxidant capacities are important activity principle of Ia, which was even superior to Trolox in the cell cultures used, while activity principles of Ic and Ib remain yet to be determined.
Collapse
Affiliation(s)
- Suzana Borovic
- Rudjer Boskovic Institute, Division of Molecular Medicine, Bijenicka street 54, HR-10000, Zagreb, Croatia
| | | | | | | | | | | | | | | | | |
Collapse
|