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Amatatongchai M, Nontawong N, Ngaosri P, Chunta S, Wanram S, Jarujamrus P, Nacapricha D, Lieberzeit PA. Facile and Compact Electrochemical Paper-Based Analytical Device for Point-of-Care Diagnostic of Dual Carcinogen Oxidative Stress Biomarkers through a Molecularly Imprinted Polymer Coated on Graphene Quantum-Dot Capped Gold. Anal Chem 2022; 94:16692-16700. [DOI: 10.1021/acs.analchem.2c03120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Maliwan Amatatongchai
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Nongyao Nontawong
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Pattanun Ngaosri
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | | | - Surasak Wanram
- Biomedical Science Research Unit, College of Medicine and Public Health, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Purim Jarujamrus
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Duangjai Nacapricha
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Peter A. Lieberzeit
- Faculty for Chemistry, Department of Physical Chemistry, University of Vienna, 1090 Vienna, Austria
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Nehru R, Dong CD, Chen CW, Nguyen TB, Li MF. Green and low-cost synthesis of yttrium oxide/graphene oxide binary sheets as a highly efficient electrocatalyst for voltammetric determination of 3-nitro-L-tyrosine. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128089] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Bravo-San Pedro JM, Kepp O, Sauvat A, Rello-Varona S, Kroemer G, Senovilla L. Clonogenic Assays to Detect Cell Fate in Mitotic Catastrophe. Methods Mol Biol 2021; 2267:227-239. [PMID: 33786796 DOI: 10.1007/978-1-0716-1217-0_16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Mitotic catastrophe (MC) is a cell death modality induced by DNA damage that involves the activation of cell cycle checkpoints such as the "DNA structure checkpoint" and "spindle assembly checkpoint" (SAC) leading to aberrant mitosis. Depending on the signal, MC can drive the cell to death or to senescence. The suppression of MC favors aneuploidy. Several cancer therapies, included microtubular poisons and radiations, trigger MC. The clonogenic assay has been used to study the capacity of single cells to proliferate and to generate macroscopic colonies and to evaluate the efficacy of anticancer drugs. Nevertheless, this method cannot analyze MC events. Here, we report an improved technique based on the use of human colon cancer HCT116 stable expressing histone H2B-GFP and DsRed-centrin proteins, allowing to determine the capacity of cells to proliferate, and to determine changes in the nucleus and centrosomes.
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Affiliation(s)
- José Manuel Bravo-San Pedro
- Centre de Recherche des Cordeliers, Sorbonne Université, Inserm, Université de Paris, Equipe 11 Labellisée par la Ligue Contre le Cancer, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France.,Departamento de Fisiología, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - Oliver Kepp
- Centre de Recherche des Cordeliers, Sorbonne Université, Inserm, Université de Paris, Equipe 11 Labellisée par la Ligue Contre le Cancer, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France
| | - Allan Sauvat
- Centre de Recherche des Cordeliers, Sorbonne Université, Inserm, Université de Paris, Equipe 11 Labellisée par la Ligue Contre le Cancer, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France
| | - Santiago Rello-Varona
- Centre de Recherche des Cordeliers, Sorbonne Université, Inserm, Université de Paris, Equipe 11 Labellisée par la Ligue Contre le Cancer, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France.,Cell Biology Department, School of Biological Sciences, Universidad Complutense de Madrid-UCM, Madrid, Spain.,Hospital La Paz Institute for Health Research-IdiPAZ, Madrid, Spain
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Sorbonne Université, Inserm, Université de Paris, Equipe 11 Labellisée par la Ligue Contre le Cancer, Paris, France. .,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France. .,Pôle de Biologie, Hopitâl Européen George Pompidou, AP-HP, Paris, France. .,Center of Systems Medicine, Chinese Academy of Medical Science, Suzhou, China. .,Department of Women's and Children's Health, Karolinska University Hospital, Stockholm, Sweden.
| | - Laura Senovilla
- Centre de Recherche des Cordeliers, Sorbonne Université, Inserm, Université de Paris, Equipe 11 Labellisée par la Ligue Contre le Cancer, Paris, France. .,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France.
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Kumar EA, Kokulnathan T, Wang TJ, Anthuvan AJ, Chang YH. Two-dimensional titanium carbide (MXene) nanosheets as an efficient electrocatalyst for 4-nitroquinoline N-oxide detection. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113354] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Chen TW, Rajaji U, Chen SM, Al Mogren MM, Hochlaf M, Al Harbi SDA, Ramalingam RJ. A novel nanocomposite with superior electrocatalytic activity: A magnetic property based ZnFe 2O 4 nanocubes embellished with reduced graphene oxide by facile ultrasonic approach. ULTRASONICS SONOCHEMISTRY 2019; 57:116-124. [PMID: 31208606 DOI: 10.1016/j.ultsonch.2019.05.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 06/09/2023]
Abstract
Herein, a novel Zinc Ferrite nanocubes (ZnFe2O4 NCs) decorated reduced graphene oxide (rGO) nanocomposite have been designed through a sonochemical method. After then, as-synthesized ZnFe2O4 NCs/rGO was characterized by XPS, XRD, HRTEM and EIS. Furthermore, the ZnFe2O4 NCs/rGO nanocomposite modified GCE (glassy carbon electrode) shows excellent electrochemical sensing performance towards biomarker of 4-nitroquinoline N-oxide (4-NQ) with fast detection. 4-NQ is one of the important cancer biomarker. Moreover, the fabricated sensor showed a wide linear window for 4-NQ between 0.025 and 534.12 µM and nanomolar detection limit (8.27 nM). Further, the as-prepared ZnFe2O4 NCs/rGO/GCE has been applied to the determination of 4-NQ in human blood and urine samples with excellent recovery results.
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Affiliation(s)
- Tse-Wei Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan; Research and Development Center for Smart Textile Technology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Umamaheswari Rajaji
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan.
| | - Muneerah Mogren Al Mogren
- Chemistry Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Majdi Hochlaf
- Laboratoire Modelisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, University Paris-Est, ́5 Blvd. Descartes, 77454 Marne-la-Vallee, France
| | - Sarah Dhaif Allah Al Harbi
- Chemistry Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - R Jothi Ramalingam
- Surfactant Research Chair, Chemistry Department, College of Science, King Saud University, P.O. Box-2455, Riyadh 11451, Saudi Arabia
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Muthumariyappan A, Rajaji U, Chen SM, Chen TW, Li YL, Ramalingam RJ. One-pot sonochemical synthesis of Bi 2WO 6 nanospheres with multilayer reduced graphene nanosheets modified electrode as rapid electrochemical sensing platform for high sensitive detection of oxidative stress biomarker in biological sample. ULTRASONICS SONOCHEMISTRY 2019; 57:233-241. [PMID: 31103278 DOI: 10.1016/j.ultsonch.2019.04.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/23/2019] [Accepted: 04/01/2019] [Indexed: 06/09/2023]
Abstract
4-Nitroquinoline N-oxide (4-NQO) is an important tumorigenic organic compound with high adverse effect in the human body. In this study, a novel Bismuth Tungstate nanospheres (Bi2WO6) decorated reduced graphene oxide (Bi2WO6/rGOS) nanocomposite have been designed through a sonochemical method. The as-synthesized Bi2WO6/rGOS was characterized through the HRTEM, FESEM, XPS, EIS and XRD. Furthermore, the nanocomposite modified glassy carbon electrode (GCE) was developed for the determination of 4-NQO. The results showed that the Bi2WO6/rGOS nanocomposite modified electrode exhibit valuable responses and excellent electrocatalytic activity. The fabricated sensor was facilitated the analysis of 4-NQO with a nanomolar detection limit (6.11 nM). Further, the as-synthesized Bi2WO6/rGOS modified electrode has been applied to sensing of 4-NQO in human blood and urine samples with satisfactory recovery.
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Affiliation(s)
- Akilarasan Muthumariyappan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Umamaheswari Rajaji
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan.
| | - Tse-Wei Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan; Research and Development Center for Smart Textile Technology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Yi-Ling Li
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan.
| | - R Jothi Ramalingam
- Surfactant Research Chair, Chemistry Department, College of Science, King Saud University, P.O. Box. 2455, Riyadh 11451, Kingdom of Saudi Arabia
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Ishay RB, Israel LL, Eitan EL, Partouche DM, Lellouche JP. Maghemite-human serum albumin hybrid nanoparticles: towards a theranostic system with high MRI r 2* relaxivity. J Mater Chem B 2016; 4:3801-3814. [PMID: 32263318 DOI: 10.1039/c6tb00778c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Human Serum Albumin (HSA) is the most abundant plasma protein in human blood, and therefore, it is the material of choice for the development of particulate formulations due to its biodegradable and biocompatible nature. Over the last decade, HSA nanoparticles (NPs) have been prepared mostly using desolvation techniques and evaluated as promising drug carriers. In addition, controlling the particle size has become a primary concern while formulating such nanoparticulate systems. Since many of these HSA-based carrier systems have often demonstrated batch-to-batch fabrication variability, significant efforts have been made to develop and characterize HSA-based NPs featuring a robust and controllable particle size, by using a desolvation/cross-linking-type Divinyl Sulfone (DVS)-mediated nanofabrication method. For this purpose and for global multi-parameter fabrication process optimization, a statistically significant Design of Experiment (DoE, MINITAB® 17 DoE software) methodology has been successfully implemented. It aimed to disclose an optimal set of HSA NP fabrication conditions in order to afford highly reproducible and stable 23.05 ± 5.3 nm-sized DoE-globally optimized core HSA NPs. Due to the use of bifunctional DVS as a cross-linker for the preparation of such DoE-optimized HSA NPs, their surface contains a variety of free functional groups which are available for further second step functional modifications. Moreover, related hybrid organic/inorganic nanosystems consisting of DoE-optimized HSA NPs that encapsulated hydrophilic (NH4)2Ce(IV)(NO3)6 (Ceric Ammonium Nitrate - CAN) modified γ-Fe2O3 NPs (CAN-maghemite or CAN-γ-Fe2O3 NPs), which enable medical imaging using magnetic resonance imaging (MRI), have also been fabricated and characterized. The resulting hybrid magnetic NPs are a quite powerful T2* contrast agent (r2* of 482 mM-1 s-1), which may be used as a powerful dual phase platform for both therapeutic (drug delivery) and diagnostic imaging (MRI) applications.
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Affiliation(s)
- Rivka Ben Ishay
- Department of Chemistry, Nanomaterials Research Center, Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan 5290002, Israel.
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Qin J, Sanmann JN, Kittrell JS, Althof PA, Kaspar EE, Hunsley BA. A formalin-free method for stabilizing cells for nucleic acid amplification, hybridization and next-generation sequencing. BMC Res Notes 2015; 8:755. [PMID: 26645067 PMCID: PMC4673747 DOI: 10.1186/s13104-015-1725-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 11/20/2015] [Indexed: 11/15/2022] Open
Abstract
Background Formalin has been widely used by pathology laboratories. Its carcinogenicity has led researchers to explore formalin substitutes. Streck Cell Preservative (SCP) is a formalin-free preservative that can preserve cellular antigens. This study was undertaken to investigate the effects of cell preservation using SCP on nucleic acid amplification, hybridization, and next-generation sequencing (NGS) as compared to control frozen cells and cells fixed in the traditional cell and tissue fixative, 10 % neutral buffered formalin (NBF). Findings The breast cancer cell line, SKBR-3, was used as a model system. Prior to nucleic acid extraction and fluorescence in situ hybridization (FISH), cells were fixed in SCP or NBF overnight at room temperature with frozen cells in parallel. Analysis showed that similar DNA extraction yields and amplification profiles determined by PCR in SCP preserved cells and control frozen cells, whereas NBF preserved cells had decreased DNA yield and impaired PCR amplification. Molecular cytogenetic studies by FISH technique indicated that the ratios of ERBB2 (HER-2/neu) signals to the chromosome 17 centromere (CEP17) were comparable for frozen cells and SCP preserved cells. The fluorescence images of both SCP fixed and control frozen cells were also clear and comparable. On the contrary, the same analysis was unsuccessful with NBF preserved cells due to poor hybridization quality. Our data also demonstrated that SCP had negligible effect on NGS testing. Conclusion We conclude that SCP can be used as an alternative to NBF as a preservative for maintaining the integrity of nucleic acids for nucleic acid amplification, sequencing and FISH analysis. Electronic supplementary material The online version of this article (doi:10.1186/s13104-015-1725-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jianbing Qin
- Research and Development Division, Streck, Inc., 109th Street, Omaha, NE, 68128, USA.
| | - Jennifer N Sanmann
- Munroe-Meyer Institute for Genetics and Rehabilitation, Cytogenetic and Human Genetics Laboratories, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Jeff S Kittrell
- Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
| | - Pamela A Althof
- Munroe-Meyer Institute for Genetics and Rehabilitation, Cytogenetic and Human Genetics Laboratories, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Erin E Kaspar
- Munroe-Meyer Institute for Genetics and Rehabilitation, Cytogenetic and Human Genetics Laboratories, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Bradford A Hunsley
- Research and Development Division, Streck, Inc., 109th Street, Omaha, NE, 68128, USA.
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Effects of a novel cell stabilizing reagent on DNA amplification by PCR as compared to traditional stabilizing reagents. Acta Histochem 2014; 116:55-60. [PMID: 23810682 DOI: 10.1016/j.acthis.2013.05.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 05/12/2013] [Accepted: 05/13/2013] [Indexed: 11/23/2022]
Abstract
Stabilization of nucleated blood cells by cell stabilizing reagent (BCT reagent) present in the Cell-Free DNA BCT blood collection device and consequent prevention of cell-free DNA contamination by cellular DNA during sample storage and shipping have previously been reported. This study was conducted to investigate the effect of this novel cell stabilizing reagent on DNA amplification by PCR as compared to traditional cell stabilizing reagents, formaldehyde and glutaraldehyde. A 787 bp long DNA fragment from human glyceraldehydes-3-phosphate dehydrogenase (GAPDH) gene was amplified by PCR and used as model system. DNA samples and blood samples were treated with BCT reagent, 0.1% formaldehyde or 0.1% glutaraldehyde at room temperature. DNA amplification was studied using conventional and real-time quantitative PCR. Results indicate that exposure of DNA to the BCT reagent for up to 14 days had no effect on DNA amplification by PCR as compared to the untreated control DNA. However, there was statistically significant decrease in DNA amplification in the DNA samples treated with formaldehyde and glutaraldehyde. We conclude that the BCT reagent used in Cell-Free DNA BCT blood collection device to prevent cell-free DNA contamination by cellular DNA had no effect on DNA amplification by PCR.
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Gupta AK, Ahmad M. Assessment of cytotoxic and genotoxic potential of refinery waste effluent using plant, animal and bacterial systems. JOURNAL OF HAZARDOUS MATERIALS 2012; 201-202:92-99. [PMID: 22169142 DOI: 10.1016/j.jhazmat.2011.11.044] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 10/19/2011] [Accepted: 11/11/2011] [Indexed: 05/31/2023]
Abstract
The work described here presents the toxic effect of Mathura refinery wastewater (MRWW) in plant (Allium cepa), bacterial (E. coli K12) and human (blood) system. The samples were collected from adjoining area of Mathura refinery, Dist. Mathura, U.P. (India). Chromosomal aberration test and micronucleus assay in (A. cepa) system, E. coli K12 survival assay as well as hemolysis assay in human blood were employed to assess the toxicity of MRWW. MRWW exposure resulted in the formation of micronuclei and bridges in chromosomes of A. cepa cells. A significant decline occurred in survival of DNA repair defective mutants of E. coli K12 exposed to MRWW. On incubation with MRWW, calf thymus DNA-EtBr fluorescence intensity decreased and percent hemolysis of human blood cells increased. An induction in the MDA levels of MRWW treated A. cepa roots indicated lipid peroxidation also. Collectively, the results demonstrate a significant genotoxic and cytotoxic potential of MRWW.
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Affiliation(s)
- Amit Kumar Gupta
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002 U.P., India
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Gavina JMA, Rubab M, Zhang H, Zhu J, Nong A, Feng YL. A tool for rapid screening of direct DNA agents using reaction rates and relative interaction potency: towards screening environmental contaminants for hazard. ACTA ACUST UNITED AC 2011; 13:3145-55. [DOI: 10.1039/c1em10511f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Palchetti I, Mascini M. Nucleic acid biosensors for environmental pollution monitoring. Analyst 2008; 133:846-54. [DOI: 10.1039/b802920m] [Citation(s) in RCA: 164] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tanel A, Averill-Bates DA. P38 and ERK mitogen-activated protein kinases mediate acrolein-induced apoptosis in Chinese hamster ovary cells. Cell Signal 2007; 19:968-77. [PMID: 17196791 DOI: 10.1016/j.cellsig.2006.10.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2006] [Accepted: 10/24/2006] [Indexed: 10/23/2022]
Abstract
Acrolein, which is a highly reactive alpha,beta-unsaturated aldehyde generated by lipid peroxidation, can affect cells and tissues and cause various disorders. Increased levels of unsaturated aldehydes play an important role in the pathogenesis of a number of human diseases such as Alzheimer's disease, atherosclerosis and diabetes. Acrolein is a highly ubiquitous toxic environmental pollutant. Because of human exposure, there is a need for investigating the mechanisms involved in acrolein toxicity at the cellular and molecular levels. Acrolein can induce cell death by apoptosis, although the mechanisms are not entirely clear. The present study investigates whether mitogen-activated protein kinases (MAPKs) play a role in activation of apoptosis by acrolein. Our findings show that acrolein-mediated apoptosis is in fact MAPK-dependent in Chinese hamster ovary cells. The MAP family kinases, including ERK and p38 kinase, and the transcription factor c-Jun were all activated by phosphorylation after 1 h exposure to acrolein. Phosphorylation of ERK and p38 kinases and their blockade by an ERK inhibitor, U0126, or a p38 inhibitor, SB203580, respectively, suggested that activation of apoptosis by acrolein is ERK- and p38-dependent. Thus, blockade of ERK and p38 inhibited chromatin condensation, caspase-7 and -9 activation as well as ICAD cleavage induced by acrolein. JNK and AKT kinases seem to be implicated in survival pathways against acrolein insult, since their respective inhibitors, SP600125 and LY294002/Wortmannin switched the mode of cell death from apoptosis to total necrosis. Finally, acrolein induced phosphorylation of the pro-apoptotic factor p53 which is responsible for transcription of pro-apoptotic factors such as Bax and Fas ligand. These results provide new information demonstrating the implication of MAPKs and AKT in acrolein-induced apoptosis, and this information may be useful for understanding the pathogenesis of a number of tissue diseases and environmental toxicity in response to acrolein.
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Affiliation(s)
- André Tanel
- Département des Sciences Biologiques, TOXEN, Université du Québec à Montréal, CP 8888, Succursale Centre Ville, Montréal, Québec, Canada H3C 3P8
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