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Shin S, Gombedza FC, Awuah Boadi E, Yiu AJ, Roy SK, Bandyopadhyay BC. Reduction of TRPC1/TRPC3 mediated Ca 2+-signaling protects oxidative stress-induced COPD. Cell Signal 2023; 107:110681. [PMID: 37062436 PMCID: PMC10542863 DOI: 10.1016/j.cellsig.2023.110681] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/14/2023] [Accepted: 04/13/2023] [Indexed: 04/18/2023]
Abstract
Oxidative stress is a predisposing factor in Chronic Obstructive Pulmonary Disease (COPD). Specifically, pulmonary epithelial (PE) cells reduce antioxidant capacity during COPD because of the continuous production of reactive oxygen species (ROS). However, the molecular pathogenesis that governs such ROS activity is unclear. Here we show that the dysregulation of intracellular calcium concentration ([Ca2+]i) in PE cells from COPD patients, compared to the healthy PE cells, is associated with the robust functional expressions of Transient Receptor Potential Canonical (TRPC)1 and TRPC3 channels, and Ca2+ entry (SOCE) components, Stromal Interaction Molecule 1 (STIM1) and ORAI1 channels. Additionally, the elevated expression levels of fibrotic, inflammatory, oxidative, and apoptotic markers in cells from COPD patients suggest detrimental pathway activation, thereby reducing the ability of lung remodeling. To further delineate the mechanism, we used human lung epithelial cell line, A549, since the behavior of SOCE and the expression patterns of TRPC1/C3, STIM1, and ORAI1 were much like PE cells. Notably, the knockdown of TRPC1/C3 in A549 cells substantially reduced the SOCE-induced [Ca2+]i rise, and reversed the ROS-mediated oxidative, fibrotic, inflammatory, and apoptotic responses, thus confirming the role of TRPC1/C3 in SOCE driven COPD-like condition. Higher TRPC1/C3, STIM1, and ORAI1 expressions, along with a greater Ca2+ entry, via SOCE in ROS-induced A549 cells, led to the rise in oxidative, fibrotic, inflammatory, and apoptotic gene expression, specifically through the extracellular signal-regulated kinase (ERK) pathway. Abatement of TRPC1 and/or TRPC3 reduced the mobilization of [Ca2+]i and reversed apoptotic gene expression and ERK activation, signifying the involvement of TRPC1/C3. Together these data suggest that TRPC1/C3 and SOCE facilitate the COPD condition through ROS-mediated cell death, thus implicating their likely roles as potential therapeutic targets for COPD. SUMMARY: Alterations in Ca2+ signaling modalities in normal pulmonary epithelial cells exhibit COPD through oxidative stress and cellular injury, compromising repair, which was alleviated through inhibition of store-operated calcium entry. SUBJECT AREA: Calcium, ROS, Cellular signaling, lung disease.
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Affiliation(s)
- Samuel Shin
- From Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, 50 Irving Street, NW, Washington, DC 20422, United States of America
| | - Farai C Gombedza
- From Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, 50 Irving Street, NW, Washington, DC 20422, United States of America
| | - Eugenia Awuah Boadi
- From Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, 50 Irving Street, NW, Washington, DC 20422, United States of America
| | - Allen J Yiu
- From Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, 50 Irving Street, NW, Washington, DC 20422, United States of America
| | - Sanjit K Roy
- From Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, 50 Irving Street, NW, Washington, DC 20422, United States of America
| | - Bidhan C Bandyopadhyay
- From Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, 50 Irving Street, NW, Washington, DC 20422, United States of America.
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2
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Martinez MZ, Olmo F, Taylor MC, Caudron F, Wilkinson SR. Dissecting the interstrand crosslink DNA repair system of Trypanosoma cruzi. DNA Repair (Amst) 2023; 125:103485. [PMID: 36989950 DOI: 10.1016/j.dnarep.2023.103485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/08/2023] [Accepted: 03/13/2023] [Indexed: 03/18/2023]
Abstract
DNA interstrand crosslinks (ICLs) are toxic lesions that can block essential biological processes. Here we show Trypanosoma cruzi, the causative agent of Chagas disease, is susceptible to ICL-inducing compounds including mechlorethamine and novel nitroreductase-activated prodrugs that have potential in treating this infection. To resolve such lesions, cells co-opt enzymes from "classical" DNA repair pathways that alongside dedicated factors operate in replication-dependent and -independent mechanisms. To assess ICL repair in T. cruzi, orthologues of SNM1, MRE11 and CSB were identified and their function assessed. The T. cruzi enzymes could complement the mechlorethamine susceptibility phenotype displayed by corresponding yeast and/or T. brucei null confirming their role as ICL repair factors while GFP-tagged TcSNM1, TcMRE11 and TcCSB were shown to localise to the nuclei of insect and/or intracellular form parasites. Gene disruption demonstrated that while each activity was non-essential for T. cruzi viability, nulls displayed a growth defect in at least one life cycle stage with TcMRE11-deficient trypomastigotes also compromised in mammalian cell infectivity. Phenotyping revealed all nulls were more susceptible to mechlorethamine than controls, a trait complemented by re-expression of the deleted gene. To assess interplay, the gene disruption approach was extended to generate T. cruzi deficient in TcSNM1/TcMRE11 or in TcSNM1/TcCSB. Analysis demonstrated these activities functioned across two ICL repair pathways with TcSNM1 and TcMRE11 postulated to operate in a replication-dependent system while TcCSB helps resolve transcription-blocking lesions. By unravelling how T. cruzi repairs ICL damage, specific inhibitors targeting repair components could be developed and used to increase the potency of trypanocidal ICL-inducing compounds.
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Affiliation(s)
- Monica Zavala Martinez
- School of Biological & Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Francisco Olmo
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK
| | - Martin C Taylor
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK
| | - Fabrice Caudron
- School of Biological & Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Shane R Wilkinson
- School of Biological & Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
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3
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Adhikari S, Ta S, Ghosh A, Guria S, Pal A, Ahir M, Adhikary A, Hira SK, Manna PP, Das D. A 1,8 naphthalimide anchor rhodamine B based FRET probe for ratiometric detection of Cr3+ion in living cells. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.12.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Li X, Zhang S, Dang Y, Liu Z, Zhang Z, Shan D, Zhang X, Wang T, Lu X. Ultratrace Naked-Eye Colorimetric Ratio Assay of Chromium(III) Ion in Aqueous Solution via Stimuli-Responsive Morphological Transformation of Silver Nanoflakes. Anal Chem 2019; 91:4031-4038. [DOI: 10.1021/acs.analchem.8b05472] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xuemei Li
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, People’s Republic of China
| | - Shouting Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, People’s Republic of China
| | - Yanfeng Dang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, People’s Republic of China
| | - Zheyuan Liu
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, People’s Republic of China
| | - Zhen Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, People’s Republic of China
| | - Duoliang Shan
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, People’s Republic of China
| | - Xuehong Zhang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, People’s Republic of China
| | - Tiansheng Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, People’s Republic of China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, People’s Republic of China
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, People’s Republic of China
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5
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Park JC, Yoon DS, Byeon E, Seo JS, Hwang UK, Han J, Lee JS. Adverse effects of two pharmaceuticals acetaminophen and oxytetracycline on life cycle parameters, oxidative stress, and defensome system in the marine rotifer Brachionus rotundiformis. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 204:70-79. [PMID: 30189352 DOI: 10.1016/j.aquatox.2018.08.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/06/2018] [Accepted: 08/26/2018] [Indexed: 05/06/2023]
Abstract
To investigate the adverse effect of two widely used pharmaceuticals, paracetamol (acetaminophen [APAP]) and oxytetracycline (OTC) on the marine rotifer Brachionus rotundiformis (B. rotundiformis), the animals were exposed to various environmentally-relevant concentrations. Up to date, acetaminophen and oxytetracycline have been considered as toxic, if used above threshold concentration, i.e. overdosed. However, this study demonstrated these two pharmaceuticals even at low concentration (i.e., μg/L scale) elicited oxidative stress through the generation of reactive oxygen species (ROS) along with the increased glutathione S-transferase activity, despite no-observed effect in in-vivo population growth. To validate the adverse effects of the two pharmaceuticals at relatively low concentrations, mRNA expression analysis was performed of the entire set of genes encoding 26 cytochrome P450s (CYPs) of phase I and 19 glutathione S-transferases (GSTs) of phase II of the rotifer B. rotundiformis. The mRNA expression analysis suggested specific genes CYP3045A2 and GSTσ1, GSTσ4, and GSTω1 take part in detoxification of APAP and OTC, resulting in no significant changes in the population growth and undetermined no observed effect concentration (NOEC) in the marine rotifer B. rotundiformis.
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Affiliation(s)
- Jun Chul Park
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Deok-Seo Yoon
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Eunjin Byeon
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Jung Soo Seo
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan 46083, South Korea
| | - Un-Ki Hwang
- Marine Ecological Risk Assessment Center, West Sea Fisheries Research Institute, National Institute of Fisheries Science, Incheon 46083, South Korea
| | - Jeonghoon Han
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea.
| | - Jae-Seong Lee
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea.
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6
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Gueiderikh A, Rosselli F, Neto JBC. A never-ending story: the steadily growing family of the FA and FA-like genes. Genet Mol Biol 2017; 40:398-407. [PMID: 28558075 PMCID: PMC5488462 DOI: 10.1590/1678-4685-gmb-2016-0213] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 12/19/2016] [Indexed: 12/22/2022] Open
Abstract
Among the chromosome fragility-associated human syndromes that present cancer predisposition, Fanconi anemia (FA) is unique due to its large genetic heterogeneity. To date, mutations in 21 genes have been associated with an FA or an FA-like clinical and cellular phenotype, whose hallmarks are bone marrow failure, predisposition to acute myeloid leukemia and a cellular and chromosomal hypersensitivity to DNA crosslinking agents exposure. The goal of this review is to trace the history of the identification of FA genes, a history that started in the eighties and is not yet over, as indicated by the cloning of a twenty-first FA gene in 2016.
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Affiliation(s)
- Anna Gueiderikh
- UMR8200 - CNRS, Équipe labellisée La Ligue contre le Cancer, Villejuif, France.,Gustave Roussy Cancer Center, Villejuif, France.,Université Paris Saclay, Paris Sud - Orsay, France
| | - Filippo Rosselli
- UMR8200 - CNRS, Équipe labellisée La Ligue contre le Cancer, Villejuif, France.,Gustave Roussy Cancer Center, Villejuif, France.,Université Paris Saclay, Paris Sud - Orsay, France
| | - Januario B C Neto
- Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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7
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Renaudin X, Koch Lerner L, Menck CFM, Rosselli F. The ubiquitin family meets the Fanconi anemia proteins. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2016; 769:36-46. [PMID: 27543315 DOI: 10.1016/j.mrrev.2016.06.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 06/18/2016] [Indexed: 12/19/2022]
Abstract
Fanconi anaemia (FA) is a hereditary disorder characterized by bone marrow failure, developmental defects, predisposition to cancer and chromosomal abnormalities. FA is caused by biallelic mutations that inactivate genes encoding proteins involved in replication stress-associated DNA damage responses. The 20 FANC proteins identified to date constitute the FANC pathway. A key event in this pathway involves the monoubiquitination of the FANCD2-FANCI heterodimer by the collective action of at least 10 different proteins assembled in the FANC core complex. The FANC core complex-mediated monoubiquitination of FANCD2-FANCI is essential to assemble the heterodimer in subnuclear, chromatin-associated, foci and to regulate the process of DNA repair as well as the rescue of stalled replication forks. Several recent works have demonstrated that the activity of the FANC pathway is linked to several other protein post-translational modifications from the ubiquitin-like family, including SUMO and NEDD8. These modifications are related to DNA damage responses but may also affect other cellular functions potentially related to the clinical phenotypes of the syndrome. This review summarizes the interplay between the ubiquitin and ubiquitin-like proteins and the FANC proteins that constitute a major pathway for the surveillance of the genomic integrity and addresses the implications of their interactions in maintaining genome stability.
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Affiliation(s)
- Xavier Renaudin
- CNRS UMR 8200-Equipe Labellisée "La Ligue Contre le Cancer"-Institut Gustave Roussy, 94805 Villejuif, France; Gustave Roussy Cancer Center, 94805 Villejuif, France; Université Paris Sud, 91400 Orsay, France.
| | - Leticia Koch Lerner
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP 05508-900, Brazil
| | | | - Filippo Rosselli
- CNRS UMR 8200-Equipe Labellisée "La Ligue Contre le Cancer"-Institut Gustave Roussy, 94805 Villejuif, France; Gustave Roussy Cancer Center, 94805 Villejuif, France; Université Paris Sud, 91400 Orsay, France.
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8
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Sullivan JA, Tong JL, Wong M, Kumar A, Sarkar H, Ali S, Hussein I, Zaman I, Meredith EL, Helsby NA, Hu L, Wilkinson SR. Unravelling the role of SNM1 in the DNA repair system ofTrypanosoma brucei. Mol Microbiol 2015; 96:827-38. [DOI: 10.1111/mmi.12973] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2015] [Indexed: 12/31/2022]
Affiliation(s)
- James A. Sullivan
- School of Biological & Chemical Sciences; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Jie Lun Tong
- School of Biological & Chemical Sciences; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Martin Wong
- School of Biological & Chemical Sciences; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Ambika Kumar
- School of Biological & Chemical Sciences; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Hajrah Sarkar
- School of Biological & Chemical Sciences; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Sarah Ali
- School of Biological & Chemical Sciences; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Ikran Hussein
- School of Biological & Chemical Sciences; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Iqra Zaman
- School of Biological & Chemical Sciences; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Emma Louise Meredith
- School of Biological & Chemical Sciences; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Nuala A. Helsby
- Department of Molecular Medicine and Pathology; University of Auckland; Private Bag 92019 Auckland New Zealand
| | - Longqin Hu
- Department of Medicinal Chemistry; Ernest Mario School of Pharmacy; Rutgers; The State University of New Jersey; Piscataway NJ 08854 USA
| | - Shane R. Wilkinson
- School of Biological & Chemical Sciences; Queen Mary University of London; Mile End Road London E1 4NS UK
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9
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Lin L, Zheng J, Sun J. Speciation of Chromium in Capsules by Capillary Electrophoresis–Inductively Coupled Plasma–Mass Spectrometry. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.908387] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Wasi S, Tabrez S, Ahmad M. Toxicological effects of major environmental pollutants: an overview. ENVIRONMENTAL MONITORING AND ASSESSMENT 2013; 185:2585-93. [PMID: 22763655 DOI: 10.1007/s10661-012-2732-8] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 06/12/2012] [Indexed: 05/24/2023]
Abstract
The last quarter of the twentieth century had witnessed a global surge in awakening against the unabated menace of environmental pollution. Among the various types of environmental pollution, water pollution is an age-old problem but it has gained an alarming dimension lately because of the problems of population increase, sewage disposal, industrial waste, radioactive waste, etc. Present scenario of water pollution calls for immediate attention towards the remediation and detoxification of these hazardous agents in order to have a healthy living environment. The present communication will deal with the toxicological effects of major environmental pollutants, viz. heavy metals, pesticides, and phenols.
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Affiliation(s)
- Samina Wasi
- College of Medicine, University of Dammam, P.O. Box 2114, Dammam, 31451, Kingdom of Saudi Arabia.
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11
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Johnson LA, Malayappan B, Tretyakova N, Campbell C, MacMillan ML, Wagner JE, Jacobson PA. Formation of cyclophosphamide specific DNA adducts in hematological diseases. Pediatr Blood Cancer 2012; 58:708-14. [PMID: 21793181 PMCID: PMC3204332 DOI: 10.1002/pbc.23254] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Accepted: 06/02/2011] [Indexed: 11/07/2022]
Abstract
BACKGROUND Fanconi anemia (FA) patients are hypersensitive to DNA alkylating agents and require lower doses than non-FA patients to minimize serious toxicity. The mechanism by which hypersensitivity occurs is thought to be due to the inability of these individuals to effectively repair drug-induced interstrand DNA-DNA crosslinks. We recently developed a highly sensitive assay for cyclophosphamide specific interstrand DNA-DNA crosslinks (G-NOR-G) and are able to quantify and compare formation of these adducts in the blood of patients. Therefore we sought to determine whether FA patients have higher in vivo exposure to the cyclophosphamide specific interstrand DNA crosslink, G-NOR-G, relative to patients without FA. PROCEDURE Cyclophosphamide interstrand DNA crosslinks were measured with the first dose of cyclophosphamide in FA and non-FA patients receiving a cyclophosphamide based preparative regimen prior to hematopoietic cell transplantation (HCT). FA patients received a lower cyclophosphamide dose than the non-FA patients (5-10 mg/kg/day vs. 50-60 mg/kg/day). RESULTS Despite the lower cyclophosphamide dose and lower plasma concentrations in FA patients, they had G-NOR-G amounts similar to the non-FA patients (area under the curve (AUC)(0-∞) , 99.8 vs. 144.9 G-NOR-G adducts/10(6) nucleotides hour, respectively, P = 0.47). When G-NOR-G AUC was normalized for cyclophosphamide plasma concentrations, FA study subjects produced 15-fold higher adducts than non-FA patients (P = 0.05). CONCLUSIONS FA patients are hypersensitive to DNA alkylating agents possibly as a result of greater formation of cyclophosphamide specific interstrand DNA crosslinks and/or diminished capacity for DNA repair. Identification and quantification of these adducts may be important determinant of cyclophosphamide related toxicity.
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Affiliation(s)
- L’Aurelle A. Johnson
- Department of Experimental and Clinical Pharmacology, University of Minnesota, Minneapolis, MN,Division of Pediatric Epidemiology and Clinical Research, University of Minnesota, Minneapolis, MN
| | - Bhaskar Malayappan
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN
| | - Natalia Tretyakova
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN
| | - Colin Campbell
- Department of Pharmacology, University of Minnesota, Minneapolis, MN
| | - Margaret L. MacMillan
- Division of Hematology and Oncology, Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN
| | - John E. Wagner
- Division of Hematology and Oncology, Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN
| | - Pamala A. Jacobson
- Department of Experimental and Clinical Pharmacology, University of Minnesota, Minneapolis, MN
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12
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Mahato P, Saha S, Suresh E, Di Liddo R, Parnigotto PP, Conconi MT, Kesharwani MK, Ganguly B, Das A. Ratiometric detection of Cr3+ and Hg2+ by a naphthalimide-rhodamine based fluorescent probe. Inorg Chem 2012; 51:1769-77. [PMID: 22235801 DOI: 10.1021/ic202073q] [Citation(s) in RCA: 208] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Newly synthesized rhodamine derivatives, L(1) and L(2), are found to bind specifically to Hg(2+) or Cr(3+) in presence of large excess of other competing ions with associated changes in their optical and fluorescence spectral behavior. These spectral changes are significant enough in the visible region of the spectrum and thus, allow the visual detection. For L(1), the detection limit is even lower than the permissible [Cr(3+)] or [Hg(2+)] in drinking water as per standard U.S. EPA norms; while the receptor, L2 could be used as a ratiometric sensor for detection of Cr(3+) and Hg(2+) based on the resonance energy transfer (RET) process involving the donor naphthalimide and the acceptor Cr(3+)/Hg(2+)-bound xanthene fragment. Studies reveal that these two reagents could be used for recognition and sensing of Hg(2+)/Cr(3+). Further, confocal laser microscopic studies confirmed that the reagent L(2) could also be used as an imaging probe for detection of uptake of these ions in A431 cells.
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Affiliation(s)
- Prasenjit Mahato
- Central Salt and Marine Chemicals Research Institute (CSIR), Bhavnagar-364002, Gujarat, India
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13
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Porto B, Vieira R, Porto G. Increased capacity of lymphocytes from hereditary hemochromatosis patients homozygous for the C282Y HFE mutation to respond to the genotoxic effect of diepoxybutane. Mutat Res 2008; 673:37-42. [PMID: 19146986 DOI: 10.1016/j.mrgentox.2008.11.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2008] [Revised: 10/13/2008] [Accepted: 11/20/2008] [Indexed: 10/21/2022]
Abstract
Hereditary hemochromatosis (HH) is a common autosomal recessive disorder characterized by systemic iron overload with consequent tissue damage. The vast majority of HH patients are homozygous for the C282Y mutation in HFE, a non-classical MHC class-I gene located in chromosome 6, whose role in the regulation of systemic iron metabolism is still not completely understood. Iron enhances the formation of reactive oxygen species, with increasing risk of DNA damage induced by oxidative stress, and consequently an increased susceptibility to chromosome instability. In the present work we examined spontaneous and diepoxybutane (DEB)-induced chromosome instability in PHA-stimulated lymphocyte cultures from 23 HH patients, all homozygous for the C282Y HFE mutation, in comparison to 29 normal controls. In addition, three patients with secondary forms of iron overload, not related to HFE, were studied as controls to test the role of iron overload on DEB-induced chromosome instability. Our results show a significantly higher frequency of spontaneous chromosome breaks in lymphocytes from the HH patients, when compared with lymphocytes from normal controls (p<0.0001). In addition, there is a significant correlation between the percentage of cells with spontaneous chromosomal breaks and the transferrin saturation (r=0.53, p=0.0041) or serum-ferritin levels (r=0.66, p=0.0001) in patients. Surprisingly, the frequency of DEB-induced chromosome breaks was significantly lower in lymphocytes from HH patients than in lymphocytes from both controls and patients with secondary forms of hemochromatosis (p=0.0029). No correlation was observed between the percentage of cells with DEB-induced chromosome breaks and the transferrin saturation or serum-ferritin values. These results suggest that lymphocytes from HH patients may have an increased capacity to respond to DEB-induced chromosome breakage, and that this capacity is somehow related to the presence of the C282Y HFE mutation.
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Affiliation(s)
- Beatriz Porto
- ICBAS-Instituto Ciências Biomédicas Abel Salazar, Laboratory of Cytogenetics, Universidade do Porto, Largo do Prof. Abel Salazar 2, 4099-003 Porto, Portugal.
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14
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Camelo RM, Kehdy FSG, Salas CE, Lopes MTP. Amifostine protection against mitomycin-induced chromosomal breakage in fanconi anaemia lymphocytes. Molecules 2008; 13:1759-72. [PMID: 18794784 PMCID: PMC6245386 DOI: 10.3390/molecules13081759] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2008] [Revised: 08/13/2008] [Accepted: 08/14/2008] [Indexed: 12/01/2022] Open
Abstract
Fanconi anaemia (FA) is a rare genetic chromosomal instability syndrome caused by impairment of DNA repair and reactive oxygen species (ROS) imbalance. This disease is also related to bone marrow failure and cancer. Treatment of these complications with radiation and alkylating agents may enhance chromosomal breakage. We have evaluated the effect of amifostine (AMF) on basal and mitomycin C (MMC)-induced chromosomal breakage in FA blood cells using the micronucleus assay. The basal micronuclei count was higher among FA patients than healthy subjects. Pre-treatment with AMF significantly inhibited micronucleation induced by MMC in healthy subjects (23.4 ± 4.0 – MMC vs 12.3 ± 2.9 – AMF → MMC) MN/1000CB, p < 0.01, one way ANOVA) as well as in FA patients (80.0 ± 5.8 – MMC vs 40.1 ± 5.8 – AMF → MMC) MN/1000CB, p < 0.01, ANOVA). Release of ROS by peripheral blood mononuclear cells treated with AMF → MMC and measured by chemoluminometry showed that AMF-protection was statistically higher among FA patients than in healthy individuals. Based on these results we suggest that AMF prevents chromosomal breakage induced by MMC, probably by its antioxidant effect.
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Affiliation(s)
- Ricardo M. Camelo
- Department of Pharmacology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, CEP 31270-901, Brazil
| | - Fernanda S. G. Kehdy
- Department of General Biology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, CEP 31270-901, Brazil
| | - Carlos E. Salas
- Departamento Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal Minas Gerais, Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
- Author to whom correspondence should be addressed. E-mail: ; Phone/Fax: +55-31-3409-2646
| | - Miriam T. P. Lopes
- Department of Pharmacology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, CEP 31270-901, Brazil
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15
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Lloret A, Calzone R, Dunster C, Manini P, d'Ischia M, Degan P, Kelly FJ, Pallardó FV, Zatterale A, Pagano G. Different patterns of in vivo pro-oxidant states in a set of cancer- or aging-related genetic diseases. Free Radic Biol Med 2008; 44:495-503. [PMID: 18053816 DOI: 10.1016/j.freeradbiomed.2007.10.046] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2007] [Revised: 09/14/2007] [Accepted: 10/24/2007] [Indexed: 11/19/2022]
Abstract
A comparative evaluation is reported of pro-oxidant states in 82 patients with ataxia telangectasia (AT), Bloom syndrome (BS), Down syndrome (DS), Fanconi anemia (FA), Werner syndrome (WS), and xeroderma pigmentosum (XP) vs 98 control donors. These disorders display cancer proneness, and/or early aging, and/or other clinical features. The measured analytes were: (a) leukocyte and urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG), (b) blood glutathione (GSSG and GSH), (c) plasma glyoxal (Glx) and methylglyoxal (MGlx), and (d) some plasma antioxidants [uric acid (UA) and ascorbic acid (AA)]. Leukocyte 8-OHdG levels ranked as follows: WS>BS approximately FA approximately XP>DS approximately AT approximately controls. Urinary 8-OHdG levels were significantly increased in a total of 22 patients with BS, FA, or XP vs 47 controls. The GSSG:GSH ratio was significantly increased in patients with WS and in young (< or =15 years) patients with DS or with FA and decreased in older patients with DS or FA and in AT, BS, and XP patients. The plasma levels of Glx and/or MGlx were significantly increased in patients with WS, FA, and DS. The UA and AA levels were significantly increased in WS and DS patients, but not in AT, FA, BS, nor XP patients. Rationale for chemoprevention trials is discussed.
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Affiliation(s)
- Ana Lloret
- Department of Physiology, University of Valencia, Avenida Blasco Ibañez 15, E-46010 Valencia, Spain
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16
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Daly MJ, Gaidamakova EK, Matrosova VY, Vasilenko A, Zhai M, Leapman RD, Lai B, Ravel B, Li SMW, Kemner KM, Fredrickson JK. Protein oxidation implicated as the primary determinant of bacterial radioresistance. PLoS Biol 2007; 5:e92. [PMID: 17373858 PMCID: PMC1828145 DOI: 10.1371/journal.pbio.0050092] [Citation(s) in RCA: 283] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2006] [Accepted: 02/02/2007] [Indexed: 11/19/2022] Open
Abstract
In the hierarchy of cellular targets damaged by ionizing radiation (IR), classical models of radiation toxicity place DNA at the top. Yet, many prokaryotes are killed by doses of IR that cause little DNA damage. Here we have probed the nature of Mn-facilitated IR resistance in Deinococcus radiodurans, which together with other extremely IR-resistant bacteria have high intracellular Mn/Fe concentration ratios compared to IR-sensitive bacteria. For in vitro and in vivo irradiation, we demonstrate a mechanistic link between Mn(II) ions and protection of proteins from oxidative modifications that introduce carbonyl groups. Conditions that inhibited Mn accumulation or Mn redox cycling rendered D. radiodurans radiation sensitive and highly susceptible to protein oxidation. X-ray fluorescence microprobe analysis showed that Mn is globally distributed in D. radiodurans, but Fe is sequestered in a region between dividing cells. For a group of phylogenetically diverse IR-resistant and IR-sensitive wild-type bacteria, our findings support the idea that the degree of resistance is determined by the level of oxidative protein damage caused during irradiation. We present the case that protein, rather than DNA, is the principal target of the biological action of IR in sensitive bacteria, and extreme resistance in Mn-accumulating bacteria is based on protein protection. One original goal of radiobiology was to explain why cells are so sensitive to ionizing radiation (IR). Early studies in bacteria incriminated DNA as the principal radiosensitive target, an assertion that remains central to modern radiation toxicity models. More recently, the emphasis has shifted to understanding why bacteria such as Deinococcus radiodurans are extremely resistant to IR, by focusing on DNA repair systems expressed during recovery from high doses of IR. Unfortunately, as key features of DNA-centric hypotheses of extreme resistance have grown weaker, the study of alternative cellular targets has lagged far behind, mostly because of their relative biological complexity. Recent studies have shown that extreme levels of bacterial IR resistance correlate with high intracellular Mn(II) concentrations, and resistant and sensitive bacteria are equally susceptible to IR-induced DNA damage. The current work establishes a mechanistic link between Mn(II) and protection of proteins from radiation damage. In contrast to resistant bacteria, naturally sensitive bacteria are highly susceptible to IR-induced protein oxidation. We propose that sensitive bacteria sustain lethal levels of protein damage at radiation doses that elicit relatively little DNA damage, and that extreme resistance in bacteria is dependent on protein protection. A high intracellular concentration of manganese inDeinococcus radiodurans protects proteins, but not DNA, from ionizing radiation-induced oxidative damage. Protein protection may be critical to the known radiation resistance of these bacteria.
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Affiliation(s)
- Michael J Daly
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America.
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17
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Yadavilli S, Martinez-Ceballos E, Snowden-Aikens J, Hurst A, Joseph T, Albrecht T, Muganda PM. Diepoxybutane activates the mitochondrial apoptotic pathway and mediates apoptosis in human lymphoblasts through oxidative stress. Toxicol In Vitro 2007; 21:1429-41. [PMID: 17693053 PMCID: PMC2169382 DOI: 10.1016/j.tiv.2007.06.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2007] [Revised: 05/23/2007] [Accepted: 06/04/2007] [Indexed: 11/18/2022]
Abstract
Diepoxybutane (DEB) is the most potent metabolite of the environmental chemical 1,3-butadiene (BD), which is prevalent in petrochemical industrial areas. BD is a known mutagen and human carcinogen, and possesses multi-systems organ toxicity. We recently reported that DEB-induced cell death in TK6 lymphoblasts was due to the occurrence of apoptosis, and not necrosis. In this study, we investigated the molecular mechanisms responsible for DEB-induced apoptosis in these cells. Bax and Bak were found to be over-expressed and activated, and the mitochondrial trans-membrane potential was attenuated in cells undergoing DEB-induced apoptosis. Cytochrome c was depleted from the mitochondria of TK6 cells undergoing apoptosis, and was released into the cytosol in Jurkat T-lymphoblasts exposed to the same concentrations of DEB. Executioner caspase 3 was deduced to be activated by initiator caspase 9. DEB-induced reactive oxygen species (ROS) formation, and the ROS scavenger N-acetyl-L-cysteine effectively blocked DEB-induced apoptosis in TK6 cells. Collectively, these results demonstrate that the mitochondrial apoptotic pathway is activated to mediate DEB-induced apoptosis in human TK6 lymphoblasts. These results further demonstrate that DEB-induced apoptosis is also mediated by the DEB-induced generation of ROS. This is the first report to examine the mechanism of DEB-induced apoptosis in human lymphoblasts.
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Affiliation(s)
- Sridevi Yadavilli
- Environmental Toxicology Ph.D. Program, Southern University, Baton Rouge, Louisiana 70813
| | - Eduardo Martinez-Ceballos
- Department of Biological Sciences, Southern University, Baton Rouge, Louisiana 70813
- Health Research Center, Southern University, Baton Rouge, Louisiana 70813
| | - Janana Snowden-Aikens
- Environmental Toxicology Ph.D. Program, Southern University, Baton Rouge, Louisiana 70813
| | - Angela Hurst
- Health Research Center, Southern University, Baton Rouge, Louisiana 70813
| | - Tranole Joseph
- Department of Biological Sciences, Southern University, Baton Rouge, Louisiana 70813
| | - Thomas Albrecht
- Department of Microbiology and Immunology, The University of Texas Medical Branch, Galveston, Texas 77555
| | - Perpetua M. Muganda
- Environmental Toxicology Ph.D. Program, Southern University, Baton Rouge, Louisiana 70813
- Department of Biological Sciences, Southern University, Baton Rouge, Louisiana 70813
- Health Research Center, Southern University, Baton Rouge, Louisiana 70813
- *To whom correspondence and reprint requests should be addressed at 216 Health Research Center, P.O. Box 9245, Southern University, Baton Rouge, LA 70813. Phone: (225) 771-3606. Fax: (225) 771-3060. E-mail:
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18
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Pagano G, Degan P, d'Ischia M, Kelly FJ, Nobili B, Pallardó FV, Youssoufian H, Zatterale A. Oxidative stress as a multiple effector in Fanconi anaemia clinical phenotype. Eur J Haematol 2005; 75:93-100. [PMID: 16000125 DOI: 10.1111/j.1600-0609.2005.00507.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Fanconi anaemia (FA) is a genetic disease characterised by bone marrow failure with excess risk of myelogenous leukaemia and solid tumours. A widely accepted notion in FA research invokes a deficiency of response to DNA damage as the fundamental basis of the 'crosslinker sensitivity' observed in this disorder. However, such an isolated defect cannot readily account for the full cellular and clinical phenotype, which includes a number of other abnormalities, such as malformations, endocrinopathies, and typical skin spots. An extensive body of evidence pointing toward an involvement of oxidative stress in the FA phenotype includes the following: (i) In vitro and ex vivo abnormalities in a number of redox status endpoints; (ii) the functions of several FA proteins in protecting cells from oxidative stress; (iii) redox-related toxicity mechanisms of the xenobiotics evoking excess toxicity in FA cells. The clinical features in FA and the in vivo abnormalities of redox parameters are here reconsidered in view of the pleiotropic clinical phenotype and known biochemical and molecular links to an in vivo prooxidant state, which causes oxidative damage to biomolecules, resulting in an excessive number of acquired abnormalities that may overwhelm the cellular repair capacity rather than a primary deficiency in DNA repair. FA may thus represent a unique model disease in testing the integration between the acquisition of macromolecular damage as a result of oxidative stress and the ability of the mammalian cell to respond effectively to such damage.
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Affiliation(s)
- Giovanni Pagano
- Centre for Research, Innovation and Technological Transfer in Oncology and Life Sciences, Mercogliano (AV), Italy.
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19
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Pagano G, Zatterale A, Degan P, d'Ischia M, Kelly FJ, Pallardó FV, Kodama S. Multiple Involvement of Oxidative Stress in Werner Syndrome Phenotype. Biogerontology 2005; 6:233-43. [PMID: 16333757 DOI: 10.1007/s10522-005-2624-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2005] [Accepted: 06/23/2005] [Indexed: 01/12/2023]
Abstract
Werner syndrome is a genetic disease characterized by early ageing, excess cancer risk, high incidence of type II diabetes mellitus, early atherosclerosis, ocular cataracts, and osteoporosis. The protein encoded by the defective gene, WRN (WRNp) associates with three activities, that is, a RecQ DNA helicase, 3'-5'-exonuclease and ATPase activities. By highlighting the DNA helicase activity, a widespread consensus in WS-associated defect(s) has been established, pointing toward a deficiency in maintaining DNA integrity. However, a possible involvement of redox pathways in WS may be suggested by several lines of evidence that include: (i) the multiple functions and interactions of WRNp with oxidative stress-related activities and factors; (ii) the pleiotropic WS clinical phenotype encompassing a number of oxidative stress-related pathologies; (iii) redox-related toxicity mechanisms of several xenobiotics exerting excess toxicity in WS cells; (iv) recent in vivo and in vitro findings of redox abnormalities in WS patients and in WS cells. The working hypothesis is raised that a deficiency in WRNp, and the pleiotropic clinical phenotype in WS patients may provide the basis to envision an underlying in vivo prooxidant state, which causes oxidative damage to biomolecules, with multiple oxidative stress-related alterations, resulting in multi-faceted clinical consequences.
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Affiliation(s)
- Giovanni Pagano
- Italian National Cancer Institute, G. Pascale Foundation, I-80131 Naples, Italy.
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