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Kochish II, Titov VY, Nikonov IN, Brazhnik EA, Vorobyov NI, Korenyuga MV, Myasnikova OV, Dolgorukova AM, Griffin DK, Romanov MN. Unraveling signatures of chicken genetic diversity and divergent selection in breed-specific patterns of early myogenesis, nitric oxide metabolism and post-hatch growth. Front Genet 2023; 13:1092242. [PMID: 36712856 PMCID: PMC9874007 DOI: 10.3389/fgene.2022.1092242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 12/27/2022] [Indexed: 01/13/2023] Open
Abstract
Introduction: Due to long-term domestication, breeding and divergent selection, a vast genetic diversity in poultry currently exists, with various breeds being characterized by unique phenotypic and genetic features. Assuming that differences between chicken breeds divergently selected for economically and culturally important traits manifest as early as possible in development and growth stages, we aimed to explore breed-specific patterns and interrelations of embryo myogenesis, nitric oxide (NO) metabolism and post-hatch growth rate (GR). Methods: These characteristics were explored in eight breeds of different utility types (meat-type, dual purpose, egg-type, game, and fancy) by incubating 70 fertile eggs per breed. To screen the differential expression of seven key myogenesis associated genes (MSTN, GHR, MEF2C, MYOD1, MYOG, MYH1, and MYF5), quantitative real-time PCR was used. Results: We found that myogenesis associated genes expressed in the breast and thigh muscles in a coordinated manner showing breed specificity as a genetic diversity signature among the breeds studied. Notably, coordinated ("accord") expression patterns of MSTN, GHR, and MEFC2 were observed both in the breast and thigh muscles. Also, associated expression vectors were identified for MYOG and MYOD1 in the breast muscles and for MYOG and MYF5 genes in the thigh muscles. Indices of NO oxidation and post-hatch growth were generally concordant with utility types of breeds, with meat-types breeds demonstrating higher NO oxidation levels and greater GR values as compared to egg-type, dual purpose, game and fancy breeds. Discussion: The results of this study suggest that differences in early myogenesis, NO metabolism and post-hatch growth are breed-specific; they appropriately reflect genetic diversity and accurately capture the evolutionary history of divergently selected chicken breeds.
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Affiliation(s)
- Ivan I. Kochish
- K. I. Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, Russia
| | - Vladimir Yu. Titov
- K. I. Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, Russia,Federal Scientific Center “All-Russian Poultry Research and Technological Institute” of the Russian Academy of Sciences, Sergiev Posad, Moscow Oblast, Russia
| | - Ilya N. Nikonov
- K. I. Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, Russia
| | | | - Nikolai I. Vorobyov
- All-Russia Institute for Agricultural Microbiology, Pushkin, St. Petersburg, Russia
| | - Maxim V. Korenyuga
- K. I. Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, Russia
| | - Olga V. Myasnikova
- K. I. Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, Russia
| | - Anna M. Dolgorukova
- Federal Scientific Center “All-Russian Poultry Research and Technological Institute” of the Russian Academy of Sciences, Sergiev Posad, Moscow Oblast, Russia
| | - Darren K. Griffin
- School of Biosciences, University of Kent, Canterbury, United Kingdom
| | - Michael N. Romanov
- K. I. Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, Russia,School of Biosciences, University of Kent, Canterbury, United Kingdom,*Correspondence: Michael N. Romanov,
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Huang Y, Suguro R, Hu W, Zheng J, Liu Y, Guan M, Zhou N, Zhang X. Nitric oxide and thyroid carcinoma: A review. Front Endocrinol (Lausanne) 2022; 13:1050656. [PMID: 36699047 PMCID: PMC9870175 DOI: 10.3389/fendo.2022.1050656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/14/2022] [Indexed: 01/11/2023] Open
Abstract
Thyroid carcinoma is the most common endocrine cancer in the world, and its incidence has been steadily increasing in recent years. Despite its relatively good prognosis, therapies have not improved greatly in recent years. Therefore, exploring new therapies for thyroid carcinoma represents an unmet need. Nitric oxide (NO) is a short-term endogenous signaling molecule that plays a vital role in various physiological and pathological processes and is synthesized by nitric oxide synthase (NOS). Many studies have been conducted over the past decades to explain its correlation to cancer. NO exerts a wide range of effects on cancer, involving angiogenesis, apoptosis, cell cycle, invasion, and metastasis. It also serves a dual function by promoting and halting tumor development simultaneously. The relationship between NO and thyroid carcinoma has been intensively studied and discussed. This paper reviews the role and molecular mechanism of NO in thyroid carcinoma and discusses potentials of prevention and treatment of thyroid carcinoma.
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Affiliation(s)
- Yu Huang
- School of Pharmacy, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Rinkiko Suguro
- State Key Laboratory of Quality Research in Chinese Medicine, Macau, Macau SAR, China
| | - Wei Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau, Macau SAR, China
| | - Jiayu Zheng
- School of Pharmacy, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Yawen Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, China
| | - Mingxin Guan
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Na Zhou
- School of Pharmacy, Macau University of Science and Technology, Macau, Macau SAR, China
- State Key Laboratory of Quality Research in Chinese Medicine, Macau, Macau SAR, China
- *Correspondence: Na Zhou, ; Xin Zhang,
| | - Xin Zhang
- School of Pharmacy, Macau University of Science and Technology, Macau, Macau SAR, China
- State Key Laboratory of Quality Research in Chinese Medicine, Macau, Macau SAR, China
- *Correspondence: Na Zhou, ; Xin Zhang,
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Hypothetical mechanism of light action on nitric oxide physiological effects. Lasers Med Sci 2020; 36:1389-1395. [PMID: 33104897 DOI: 10.1007/s10103-020-03169-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/21/2020] [Indexed: 10/23/2022]
Abstract
Nitric oxide is a universal cellular mediator. It is involved in many physiological processes, including those induced by light. The disability for complete analysis of the nitric oxide metabolites in tissues prevents the exact understanding of the role of NO in a particular process. The sensitivity and selectivity of an enzymatic sensor developed in our lab is based on the detection of all NO groups that carry a positive charge or acquire it in the chemical processes. Using this sensor, we have shown that dinitrosyl iron complexes (DNIC), being principal nitric oxide donors in most of living tissues, undergo transformations under light irradiation in the wavelength range of 400-700 nm. These changes are not associated with nitric oxide release to the environment. But a nitrosyl iron complex without thiol ligands (Fe(NO)n) is produced. Moreover, in the moment of the complex reorganization, the chemical bond between the NO group and other components apparently weakens and, in the presence of a substance possessing chemical affinity to the NO group, the latter acquires the ability of transition from the complex to this substance. Therefore, the efficiency of NO donors first of all depends on the existence of the NO target and its status including that under the action of light. The activation of a donor compound by light can facilitate the transfer of NO to the target. Transfer of NO from the donor to the target occurs without releasing NO, or with a minimum time of its stay in the unbound state.
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Nitric oxide (NO) in bird embryogenesis: physiological role and ability of practical use. WORLD POULTRY SCI J 2019. [DOI: 10.1017/s0043933912000098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Dolgorukova AM, Titov VY, Petrov VA, Osipov AN, Slesarenko NA, Kochish II. Mechanisms of Specific Embryonic Effects of Nitrogen Oxide. Bull Exp Biol Med 2018; 165:635-639. [PMID: 30225706 DOI: 10.1007/s10517-018-4230-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Indexed: 11/28/2022]
Abstract
The study of NO metabolism in chicken embryos showed that the intensity of oxidation of both endogenous and exogenous for the embryo NO donors to nitrate is determined by the presence or state of NO targets, rather than donor concentration. The mechanism of this oxidation and its physiological role are discussed. It was also shown that oxidation product nitrate is actively eliminated from the amnionic sac.
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Affiliation(s)
- A M Dolgorukova
- Federal Research Centre All-Russian Research and Technology Institute of Poultry Industry, Russian Academy of Sciences, Moscow, Russia
| | - V Yu Titov
- Federal Research Centre All-Russian Research and Technology Institute of Poultry Industry, Russian Academy of Sciences, Moscow, Russia. .,N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - V A Petrov
- N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A N Osipov
- N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - N A Slesarenko
- K. I. Skryabin Moscow State Academy of Veterinary and Biotechnology, Moscow, Russia
| | - I I Kochish
- K. I. Skryabin Moscow State Academy of Veterinary and Biotechnology, Moscow, Russia
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Sharma NK, Kumar A, Kumari A, Tokar EJ, Waalkes MP, Bortner CD, Williams J, Ehrenshaft M, Mason RP, Sinha BK. Nitric Oxide Down-Regulates Topoisomerase I and Induces Camptothecin Resistance in Human Breast MCF-7 Tumor Cells. PLoS One 2015; 10:e0141897. [PMID: 26540186 PMCID: PMC4635000 DOI: 10.1371/journal.pone.0141897] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 10/14/2015] [Indexed: 11/19/2022] Open
Abstract
Camptothecin (CPT), a topoisomerase I poison, is an important drug for the treatment of solid tumors in the clinic. Nitric oxide (·NO), a physiological signaling molecule, is involved in many cellular functions, including cell proliferation, survival and death. We have previously shown that ·NO plays a significant role in the detoxification of etoposide (VP-16), a topoisomerase II poison in vitro and in human melanoma cells. ·NO/·NO-derived species are reported to modulate activity of several important cellular proteins. As topoisomerases contain a number of free sulfhydryl groups which may be targets of ·NO/·NO-derived species, we have investigated the roles of ·NO/·NO-derived species in the stability and activity of topo I. Here we show that ·NO/·NO-derived species induces a significant down-regulation of topoisomerase I protein via the ubiquitin/26S proteasome pathway in human colon (HT-29) and breast (MCF-7) cancer cell lines. Importantly, ·NO treatment induced a significant resistance to CPT only in MCF-7 cells. This resistance to CPT did not result from loss of topoisomerase I activity as there were no differences in topoisomerase I-induced DNA cleavage in vitro or in tumor cells, but resulted from the stabilization/induction of bcl2 protein. This up-regulation of bcl2 protein in MCF-7 cells was wtp53 dependent as pifithrine-α, a small molecule inhibitor of wtp53 function, completely reversed CPT resistance, suggesting that wtp53 and bcl2 proteins played important roles in CPT resistance. Because tumors in vivo are heterogeneous and contaminated by infiltrating macrophages, ·NO-induced down-regulation of topoisomerase I protein combined with bcl2 protein stabilization could render certain tumors highly resistant to CPT and drugs derived from it in the clinic.
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Affiliation(s)
- Nilesh K. Sharma
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, NIH, Research Triangle, Park, Durham, North Carolina, United States of America
| | - Ashutosh Kumar
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, NIH, Research Triangle, Park, Durham, North Carolina, United States of America
| | - Amrita Kumari
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, NIH, Research Triangle, Park, Durham, North Carolina, United States of America
| | - Erik J. Tokar
- National Toxicology Program, National Institute of Environmental Health Sciences, NIH, Research Triangle, Park, Durham, North Carolina, United States of America
| | - Michael P. Waalkes
- National Toxicology Program, National Institute of Environmental Health Sciences, NIH, Research Triangle, Park, Durham, North Carolina, United States of America
| | - Carl D. Bortner
- Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, NIH, Research Triangle, Park, Durham, North Carolina, United States of America
| | - Jason Williams
- Laboratory of Structural Biology, National Institute of Environmental Health Sciences, NIH, Research Triangle, Park, Durham, North Carolina, United States of America
| | - Marilyn Ehrenshaft
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, NIH, Research Triangle, Park, Durham, North Carolina, United States of America
| | - Ronald P. Mason
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, NIH, Research Triangle, Park, Durham, North Carolina, United States of America
| | - Birandra K. Sinha
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, NIH, Research Triangle, Park, Durham, North Carolina, United States of America
- * E-mail:
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Basic and Clinical Aspects of Photodynamic Therapy. RESISTANCE TO TARGETED ANTI-CANCER THERAPEUTICS 2015. [DOI: 10.1007/978-3-319-12730-9_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Kanngiesser M, Mair N, Lim HY, Zschiebsch K, Blees J, Häussler A, Brüne B, Ferreiròs N, Kress M, Tegeder I. Hypoxia-inducible factor 1 regulates heat and cold pain sensitivity and persistence. Antioxid Redox Signal 2014; 20:2555-71. [PMID: 24144405 DOI: 10.1089/ars.2013.5494] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
AIMS The present study assessed the functions of the transcription factor hypoxia-inducible factor (HIF) in sensory neurons in models of acute, inflammatory, ischemic, and neuropathic pain. The alpha subunit, HIF1α, was specifically deleted in neurons of the dorsal root ganglia by mating HIF1α(fl/fl) mice with SNScre mice. RESULTS SNS-HIF1α(-/-) mice were more sensitive to noxious heat and cold pain stimulation than were HIF1α(fl/fl) control mice. They also showed heightened first-phase nociceptive responses in the formalin and capsaicin tests with increased numbers of cFos-positive neurons in the dorsal horn, and intensified hyperalgesia in early phases after paw inflammation and hind limb ischemia/reperfusion. The behavioral cold and heat pain hypersensitivity was explained by increased calcium fluxes after transient receptor potential channel activation in primary sensory neurons of SNS-HIF1α(-/-) mice and lowered electrical activation thresholds of sensory fibers. SNS-HIF1α(-/-) mice however, developed less neuropathic pain after sciatic nerve injury, which was associated with an abrogation of HIF1-mediated gene up-regulation. INNOVATION The results suggest that HIF1α is protective in terms of acute heat and cold pain but in case of ongoing activation in injured neurons, it may promote the development of neuropathic pain. CONCLUSION The duality of HIF1 in pain regulation may have an impact on the side effects of drugs targeting HIF1, which are being developed, for example, as anticancer agents. Specifically, in patients with cancer neuropathy, however, temporary HIF1 inhibition might provide a welcome combination of growth and pain reduction.
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Affiliation(s)
- Maike Kanngiesser
- 1 Pharmazentrum Frankfurt/ZAFES, Institute of Clinical Pharmacology, Goethe-University Hospital Frankfurt , Frankfurt, Germany
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Characterization of apoptosis induced by emodin and related regulatory mechanisms in human neuroblastoma cells. Int J Mol Sci 2013; 14:20139-56. [PMID: 24113589 PMCID: PMC3821607 DOI: 10.3390/ijms141020139] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 09/26/2013] [Accepted: 09/26/2013] [Indexed: 12/23/2022] Open
Abstract
Emodin (1,3,8-trihydroxy-6-methylanthraquinone), a major constituent of rhubarb, has a wide range of therapeutic applications. Recent studies have shown that emodin can induce or prevent cell apoptosis, although the precise molecular mechanisms underlying these effects are unknown. Experiments from the current study revealed that emodin (10–20 μM) induces apoptotic processes in the human neuroblastoma cell line, IMR-32, but exerts no injury effects at treatment doses below 10 μM. Treatment with emodin at concentrations of 10–20 μM led to a direct increase in the reactive oxygen species (ROS) content in IMR-32 cells, along with significant elevation of cytoplasmic free calcium and nitric oxide (NO) levels, loss of mitochondrial membrane potential (MMP), activation of caspases-9 and -3, and cell death. Pretreatment with nitric oxide (NO) scavengers suppressed the apoptotic biochemical changes induced by 20 μM emodin, and attenuated emodin-induced p53 and p21 expression involved in apoptotic signaling. Our results collectively indicate that emodin at concentrations of 10–20 μM triggers apoptosis of IMR-32 cells via a mechanism involving both ROS and NO. Based on the collective results, we propose a model for an emodin-triggered apoptotic signaling cascade that sequentially involves ROS, Ca2+, NO, p53, caspase-9 and caspase-3.
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Chan WH, Houng WL, Lin CAJ, Lee CH, Li PW, Hsieh JT, Shen JL, Yeh HI, Chang WH. Impact of dihydrolipoic acid on mouse embryonic stem cells and related regulatory mechanisms. ENVIRONMENTAL TOXICOLOGY 2013; 28:87-97. [PMID: 21462292 DOI: 10.1002/tox.20700] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2010] [Revised: 01/03/2011] [Accepted: 01/06/2011] [Indexed: 05/30/2023]
Abstract
α-Lipoic acid (LA) is a thiol with antioxidant properties that protects against oxidative stress-induced apoptosis. LA is absorbed from the diet, taken up by cells and tissues, and subsequently reduced to dihydrolipoic acid (DHLA). Recently, DHLA has been used as the hydrophilic nanomaterial preparations, and therefore, determination of its bio-safety profile is essential. In this article, we show that DHLA (50-100 μM) induces apoptotic processes in mouse embryonic stem cells (ESC-B5), but exerts no injury effects at treatment dosages below 50 μM. Higher concentrations of DHLA (50-100 μM) directly increased the reactive oxygen species (ROS) content in ESC-B5 cells, along with a significant increase in cytoplasmic free calcium and nitric oxide (NO) levels, loss of mitochondrial membrane potential (MMP), activation of caspases-9 and -3, and cell death. Pretreatment with NO scavengers suppressed the apoptotic biochemical changes induced by 100 μM DHLA and promoted the gene expression levels of p53 and p21 involved in apoptotic signaling. Our results collectively indicate that DHLA at concentrations of 50-100 μM triggers apoptosis of ESC-B5 cells, which involves both ROS and NO. Importantly, at doses of less than 50 μM (0-25 μM), DHLA does not exert hazardous effects on ESC-B5 cell properties, including viability, development and differentiation. These results provide important information in terms of dosage safety and biocompatibility of DHLA to facilitate its further use as a precursor for biomaterial preparation.
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Affiliation(s)
- Wen-Hsiung Chan
- Department of Bioscience Technology, Chung Yuan Christian University, Chung Li 32023, Taiwan
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Alam MJ, Devi GR, Ravins, Ishrat R, Agarwal SM, Singh RKB. Switching p53 states by calcium: dynamics and interaction of stress systems. MOLECULAR BIOSYSTEMS 2013; 9:508-21. [PMID: 23360948 DOI: 10.1039/c3mb25277a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The integration of calcium and a p53-Mdm2 oscillator model is studied using a deterministic as well as a stochastic approach, to investigate the impact of a calcium wave on single cell dynamics and on the inter-oscillator interaction. The high dose of calcium in the system activates the nitric oxide synthase, synthesizing nitric oxide which then downregulates Mdm2 and influences drastically the p53-Mdm2 network regulation, lifting the system from a normal to a stressed state. The increase in calcium level switches the system to different states, as identified by the different behaviours of the p53 temporal dynamics, i.e. oscillation death to sustain the oscillation state via a mixed state of dampened and oscillation death states. Further increase of the calcium dose in the system switches the system from sustained to oscillation death state again, while an excess of calcium shifts the cell to an apoptotic state. Another important property of the calcium ion is its ability to behave as a synchronizing agent among the interacting systems. The time evolution of the p53 dynamics of the two diffusively coupled systems at stress condition via Ca(2+) shows synchronization between the two systems. The noise contained in the system interestingly helps the system to maintain its stabilized state (normal condition). However, noise has the tendency to destruct the synchronization effect, which means that it tries to restrict the system from external signals to maintain its normal condition. However, at the stress condition, the synchronization rate is found to be faster.
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Affiliation(s)
- Md Jahoor Alam
- Center for Interdisciplinary Research in Basic Science, Jamia Millia Islamia, New Delhi, 110025, India
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Su X, Takahashi A, Kondo N, Nakagawa Y, Iwasaki T, Guo G, Ohnishi T. Nitric oxide radical-induced radioadaptation and radiosensitization are G2/M phase-dependent. JOURNAL OF RADIATION RESEARCH 2011; 52:609-615. [PMID: 21757848 DOI: 10.1269/jrr.11026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The aim of this study was to examine biological effects of nitric oxide (NO) on radiosensitivity and chromosome aberrations in different phases of the cell cycle in human cancer cells with a wild-type p53 (wtp53) genotype. H1299/wtp53 cells were pre-treated with isosorbide dinitrate (ISDN) at different concentrations or pre-irradiated with a low dose of X-rays, and then exposed to a high dose of X-rays. Cell synchronization was achieved with serum starvation. Cellular radiosensitivity, cell cycle distributions, and chromosome aberrations were assayed with colony-forming assays, flow cytometry and chromosome banding techniques, respectively. After treatment with ISDN at a low concentration or after an exposure to 0.02 Gy of X-rays, radioresistance and a reduction in the number of chromosome aberrations were observed mainly 17.5 h after plating mitotic cells. This radioadaptation effect was observed during a clearly shortened G(2)/M phase and a slightly prolonged S phase. In contrast, in the presence of a high concentration of ISDN, radiosensitization and the enhancement of chromosome aberrations were detected principally 17.5 h after plating mitotic cells, and this radiosensitization was observed during a significantly prolonged G(2)/M phase and a slightly shortened S phase. A range of concentrations of NO induced opposing effects on radiosensitivity and chromosome aberrations in human non-small cell lung cancer cells bearing wtp53 gene status, and these different effects produced by NO depended on the cell cycle phase.
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Affiliation(s)
- Xiaoming Su
- Department of Radiation Oncology, 306th Hospital of PLA, Beijing, China
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Eccleston HB, Andringa KK, Betancourt AM, King AL, Mantena SK, Swain TM, Tinsley HN, Nolte RN, Nagy TR, Abrams GA, Bailey SM. Chronic exposure to a high-fat diet induces hepatic steatosis, impairs nitric oxide bioavailability, and modifies the mitochondrial proteome in mice. Antioxid Redox Signal 2011; 15:447-59. [PMID: 20919931 PMCID: PMC3118652 DOI: 10.1089/ars.2010.3395] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Obesity-related pathologies, such as nonalcoholic fatty liver disease, are linked to mitochondrial dysfunction and nitric oxide (NO) deficiency. Herein, we tested the hypothesis that a high-fat diet (HFD) modifies the liver mitochondrial proteome and alters proteins involved in NO metabolism, namely arginase 1 and endothelial NO synthase. Male C57BL/6 mice were fed a control or HFD and liver mitochondria were isolated for proteomics and reactive oxygen species measurements. Steatosis and hepatocyte ballooning were present in livers of HFD mice, with no pathology observed in the controls. HFD mice had increased serum glucose and decreased adiponectin. Mitochondrial reactive oxygen species was increased after 8 weeks in the HFD mice, but decreased at 16 weeks compared with the control, which was accompanied by increased uncoupling protein 2. Using proteomics, 22 proteins were altered as a consequence of the HFD. This cohort consists of oxidative phosphorylation, lipid metabolism, sulfur amino acid metabolism, and chaperone proteins. We observed a HFD-dependent increase in arginase 1 and decrease in activated endothelial NO synthase. Serum and liver nitrate + nitrite were decreased by HFD. In summary, these data demonstrate that a HFD causes steatosis, alters NO metabolism, and modifies the liver mitochondrial proteome; thus, NO may play an important role in the processes responsible for nonalcoholic fatty liver disease.
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Affiliation(s)
- Heather B Eccleston
- Department of Environmental Health Sciences, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA
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Chen ZY, Wang L, Asavaritkrai P, Noguchi CT. Up-regulation of erythropoietin receptor by nitric oxide mediates hypoxia preconditioning. J Neurosci Res 2011; 88:3180-8. [PMID: 20806411 DOI: 10.1002/jnr.22473] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Erythropoietin (Epo), known to stimulate erythroid progenitor cell survival, proliferation, and differentiation, has been shown to be neuroprotective against brain ischemia in animal models. Both Epo and Epo receptor (EpoR) are expressed in the brain and are up-regulated by hypoxia. Brain Epo signaling can stimulate neural cell survival and prevent neuron apoptosis. Neurons from EpoR null mice exhibit marked increased sensitivity to hypoxia. In endothelial cells, Epo has been shown to stimulate nitric oxide (NO) production, particularly at low pO(2). We found here that the EpoR expression on neural cells and Epo's neuroprotective effect were regulated by NO. Hypoxia increased NO production as well as EpoR expression, and inhibition of NOS activity reduced the proportion of EpoR-expressing neurons induced at low pO(2). Conversely, addition of NO donor to cultures grown under normoxia induced EpoR. Similarly, NO donor increased EpoR promoter activity in a reporter gene assay, suggesting that NO regulates EpoR at the transcription level. Preincubation of neurons with NO results in induction of EpoR, which gives rise to protection against hypoxia even in the absence of exogenous Epo, although at high concentration NO is toxic. These data provide evidence of a role for NO in Epo activity in brain and suggest links between NO production, EpoR expression, and Epo signaling in neuroprotection.
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Affiliation(s)
- Zhi-Yong Chen
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-1822, USA
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Chan WH. Photodynamic treatment induces an apoptotic pathway involving calcium, nitric oxide, p53, p21-activated kinase 2, and c-Jun N-terminal kinase and inactivates survival signal in human umbilical vein endothelial cells. Int J Mol Sci 2011; 12:1041-59. [PMID: 21541041 PMCID: PMC3083688 DOI: 10.3390/ijms12021041] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Revised: 01/25/2011] [Accepted: 02/02/2011] [Indexed: 01/24/2023] Open
Abstract
Photodynamic treatment (PDT) elicits a diverse range of cellular responses, including apoptosis. Previously, we showed that PDT stimulates caspase-3 activity, and subsequent cleavage and activation of p21-activated kinase 2 (PAK2) in human epidermal carcinoma A431 cells. In the current study, pretreatment with nitric oxide (NO) scavengers inhibited PDT-induced mitochondrial membrane potential (MMP) changes, activation of caspase-9, caspase-3, p21-activated protein kinase 2 (PAK2) and c-Jun N-terminal kinase (JNK), and gene expression of p53 and p21 involved in apoptotic signaling. Moreover, PAK2 activity was required for PDT-induced JNK activation and apoptosis. Inhibition of p53 mRNA expression using small interfering RNA (siRNA) additionally blocked activation of PAK2 and apoptosis induced by PDT. Importantly, our data also show that PDT triggers cell death via inactivation of ERK-mediated anti-apoptotic pathway. PDT triggers cell death via inactivation of the HSP90/multi-chaperone complex and subsequent degradation of Ras, further inhibiting anti-apoptotic processes, such as the Ras→ERK signal transduction pathway. Furthermore, we did not observe two-stage JNK activation for regulation of PAK2 activity in the PDT-induced apoptotic pathway in HUVECs, which was reported earlier in A431 cells. Based on the collective results, we have proposed a model for the PDT-triggered inactivation of the survival signal and apoptotic signaling cascade with Rose Bengal (RB), which sequentially involves singlet oxygen, Ca2+, NO, p53, caspase-9, caspase-3, PAK2, and JNK.
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Affiliation(s)
- Wen-Hsiung Chan
- Department of Bioscience Technology and Center for Nanotechnology, Chung Yuan Christian University, Chung Li 32023, Taiwan; E-Mail: ; Tel.: +886-3-2653515
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Shlomai J. Redox control of protein-DNA interactions: from molecular mechanisms to significance in signal transduction, gene expression, and DNA replication. Antioxid Redox Signal 2010; 13:1429-76. [PMID: 20446770 DOI: 10.1089/ars.2009.3029] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Protein-DNA interactions play a key role in the regulation of major cellular metabolic pathways, including gene expression, genome replication, and genomic stability. They are mediated through the interactions of regulatory proteins with their specific DNA-binding sites at promoters, enhancers, and replication origins in the genome. Redox signaling regulates these protein-DNA interactions using reactive oxygen species and reactive nitrogen species that interact with cysteine residues at target proteins and their regulators. This review describes the redox-mediated regulation of several master regulators of gene expression that control the induction and suppression of hundreds of genes in the genome, regulating multiple metabolic pathways, which are involved in cell growth, development, differentiation, and survival, as well as in the function of the immune system and cellular response to intracellular and extracellular stimuli. It also discusses the role of redox signaling in protein-DNA interactions that regulate DNA replication. Specificity of redox regulation is discussed, as well as the mechanisms providing several levels of redox-mediated regulation, from direct control of DNA-binding domains through the indirect control, mediated by release of negative regulators, regulation of redox-sensitive protein kinases, intracellular trafficking, and chromatin remodeling.
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Affiliation(s)
- Joseph Shlomai
- Department of Microbiology and Molecular Genetics, The Kuvin Center for the Study of Tropical and Infectious Diseases, Institute for Medical Research Canada-Israel, The Hebrew University-Hadassah Medical School, Jerusalem, Israel.
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Rosales-Corral S, Reiter RJ, Tan DX, Ortiz GG, Lopez-Armas G. Functional aspects of redox control during neuroinflammation. Antioxid Redox Signal 2010; 13:193-247. [PMID: 19951033 DOI: 10.1089/ars.2009.2629] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Neuroinflammation is a CNS reaction to injury in which some severe pathologies, regardless of their origin, converge. The phenomenon emphasizes crosstalk between neurons and glia and reveals a complex interaction with oxidizing agents through redox sensors localized in enzymes, receptors, and transcription factors. When oxidizing pressures cause reversible molecular changes, such as minimal or transitory proinflammatory cytokine overproduction, redox couples provide a means of translating the presence of reactive oxygen or nitrogen species into useful signals in the cell. Additionally, thiol-based redox sensors convey information about localized changes in redox potential induced by physiologic or pathologic situations. They are susceptible to oxidative changes and become key events during neuroinflammation, altering the course of a signaling response or the behavior of specific transcription factors. When oxidative stress augments the pressure on the intracellular environment, the effective reduction potential of redox pairs diminishes, and cell signaling shifts toward proinflammatory and proapoptotic signals, creating a vicious cycle between oxidative stress and neuroinflammation. In addition, electrophilic compounds derived from the oxidative cascade react with key protein thiols and interfere with redox signaling. This article reviews the relevant functional aspects of redox control during the neuroinflammatory process.
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Affiliation(s)
- Sergio Rosales-Corral
- Lab. Desarrollo-Envejecimiento, Enfermedades Neurodegenerativas, División de Neurociencias, Centro de Investigación Biomédica de Occidente (CIBO) del Instituto Mexicano del Seguro Social (IMSS) , Guadalajara, Jalisco. Mexico.
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Kig C, Temizkan G. Nitric oxide as a signaling molecule in the fission yeast Schizosaccharomyces pombe. PROTOPLASMA 2009; 238:59-66. [PMID: 19795185 DOI: 10.1007/s00709-009-0074-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Accepted: 09/08/2009] [Indexed: 05/28/2023]
Abstract
Nitric oxide synthases (NOS) catalyze the synthesis of ubiquitous signaling molecule nitric oxide (NO) which controls numerous biological processes. Using a spectrofluorometric NOS assay, we have measured the rate of total NO production in the crude cell extracts of Schizosaccharomyces pombe. NO production was reduced in the absence of NOS cofactors calmodulin and tetrahydrobiopterin, and a competitive NOS inhibitor NG-nitro-L-arginine methyl ester (L-NAME) was able to cause a statistically significant inhibition on the rate of total NO production. These results, for the first time, provide evidence that an enzyme with a NOS-like activity may be present in the fission yeast. In order to assess the possible regulatory roles of NO as a signaling molecule in this yeast, using the differential display technique, we screened for NO-responsive genes whose expression decreased upon exposure to L-NAME and increased in response to an NO donor, sodium nitroprusside treatment. Differential expression patterns of byr1, pek1, sid1, and wis1 genes were confirmed by quantitative real-time PCR. The physiological experiments performed based on the functions and molecular interactions of these genes have pointed to the possibility that NO production might be required for sporulation in S. pombe. Taken together, these findings suggest that NO may function as a signaling molecule which can induce both transcriptional and physiological changes in the fission yeast. Hence, these data also imply that S. pombe can be used as a model system for investigating the mechanisms underlying NO-related complex signaling pathways.
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Affiliation(s)
- Cenk Kig
- Department of Molecular Biology and Genetics, Faculty of Science, Istanbul University, Vezneciler, 34134 Istanbul, Turkey.
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20
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Hernlund E, Kutuk O, Basaga H, Linder S, Panaretakis T, Shoshan M. Cisplatin-induced nitrosylation of p53 prevents its mitochondrial translocation. Free Radic Biol Med 2009; 46:1607-13. [PMID: 19328230 DOI: 10.1016/j.freeradbiomed.2009.03.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 01/27/2009] [Accepted: 03/17/2009] [Indexed: 10/21/2022]
Abstract
The cellular response to DNA damage has been reported to involve rapid transcription-independent translocation of p53 to mitochondria. We show here that the DNA-damaging cisplatin-derived anticancer agent oxaliplatin induced both mitochondrial translocation and subsequent Bcl-xL interaction, whereas cisplatin did neither. The differential response was due to nitrosative modification of p53. Thus, cisplatin, but not oxaliplatin, induced increased expression of inducible nitric oxide synthase (iNOS). Cisplatin treatment in the presence of an iNOS inhibitor (1400W) allowed p53 mitochondrial translocation. Conversely, oxaliplatin-induced translocation of p53 was prevented by cotreatment with an exogenous NO donor. In cisplatin-treated cells, nuclear but not mitochondrial p53 showed nitrotyrosinylation that was inhibitable by 1400W. We conclude that nitrosative protein modification is more prominent in the response to cisplatin than oxaliplatin and that nitrosative modification of p53 is a major determinant of p53 subcellular location.
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Affiliation(s)
- Emma Hernlund
- Department of Oncology-Pathology, CCK, Karolinska Institute, S-17176 Stockholm, Sweden
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21
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Impact of methylglyoxal and high glucose co-treatment on human mononuclear cells. Int J Mol Sci 2009; 10:1445-1464. [PMID: 19468318 PMCID: PMC2680626 DOI: 10.3390/ijms10041445] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Revised: 03/13/2009] [Accepted: 03/26/2009] [Indexed: 12/31/2022] Open
Abstract
Hyperglycemia and elevation of methylglyoxal (MG) are symptoms of diabetes mellitus (DM). In this report, we show that co-treatment of human mononuclear cells (HMNCs) with MG (5 μM) and high glucose (HG; 15 – 30 mM) induces apoptosis or necrosis. HG/MG co-treatment directly enhanced the reactive oxygen species (ROS) content in HMNCs, leading to decreased intracellular ATP levels, which control cell death via apoptosis or necrosis. Concentrations of 5 μM MG and 15 mM glucose significantly increased cytoplasmic free calcium and nitric oxide (NO) levels, loss of mitochondrial membrane potential (MMP), activation of caspases-9 and -3, and cell death. In contrast, no apoptotic biochemical changes were detected in HMNCs treated with 5 μM MG and 25 mM glucose, which appeared to undergo necrosis. Pretreatment with nitric oxide (NO) scavengers inhibited apoptotic biochemical changes induced by 5 μM MG/15 mM glucose, and increased the gene expression levels of p53 and p21 involved in apoptotic signaling. The results collectively suggest that the treatment dosage of MG and glucose determines the mode of cell death (apoptosis vs. necrosis) of HMNCs, and that both ROS and NO play important roles in MG/HG-induced apoptosis.
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22
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Developmental changes in the response of murine cerebellar granule cells to nitric oxide. Neurochem Int 2008; 52:1394-401. [DOI: 10.1016/j.neuint.2008.02.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2007] [Revised: 02/25/2008] [Accepted: 02/29/2008] [Indexed: 11/23/2022]
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Abstract
The mycotoxin citrinin (CTN) is a natural contaminant in foodstuffs and animal feeds, and exerts cytotoxic and genotoxic effects on various mammalian cells. CTN causes cell injury, including apoptosis. However, its precise regulatory mechanisms of action, particularly in stem cells and embryos, are currently unclear. Recent studies show that CTN has cytotoxic effects on mouse embryonic stem cells and blastocysts, and is associated with defects in their subsequent development, both in vitro and in vivo. Experiments with the embryonic stem cell line, ESC-B5, disclose that CTN induces apoptosis via several mechanisms, including ROS generation, increased cytoplasmic free calcium levels, intracellular nitric oxide production, enhanced Bax/Bcl-2 ratio, loss of mitochondrial membrane potential, cytochrome c release, activation of caspase-9 and caspase-3, and p21-activated protein kinase 2 and c-Jun N-terminal protein kinase activation. Additional studies show that CTN promotes cell death via inactivation of the HSP90/multi-chaperone complex and subsequent degradation of Ras and Raf-1, further inhibiting anti-apoptotic processes such as the Ras-->ERK signal transduction pathway. On the basis of these findings, we propose a model for CTN-induced cell injury signalling cascades in embryonic stem cells and blastocysts.
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Affiliation(s)
- Wen-Hsiung Chan
- Department of Bioscience Technology and Center for Nanotechnology, Chung Yuan Christian University, Chung Li, Taiwan.
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24
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Chan WH, Wu HJ. Methylglyoxal and high glucose co-treatment induces apoptosis or necrosis in human umbilical vein endothelial cells. J Cell Biochem 2008; 103:1144-57. [PMID: 17721990 DOI: 10.1002/jcb.21489] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Hyperglycemia and elevation of methylglyoxal (MG) are symptoms of diabetes mellitus (DM). We previously showed that high glucose (HG; 30 mM) or MG (50-400 microM) could induce apoptosis in mammalian cells, but these doses are higher than the physiological concentrations of glucose and MG in the plasma of DM patients. The physiological concentration of MG and glucose in the normal blood circulation is about 1 microM and 5 mM, respectively. Here, we show that co-treatment with concentrations of MG and glucose comparable to those seen in the blood circulation of DM patients (5 microM and 15-30 mM, respectively) could cause cell apoptosis or necrosis in human umbilical vein endothelial cells (HUVECs) in vitro. HG/MG co-treatment directly increased the reactive oxygen species (ROS) content in HUVECs, leading to increases in intracellular ATP levels, which can control cell death through apoptosis or necrosis. Co-treatment of HUVECs with 5 microM MG and 20 mM glucose significantly increased cytoplasmic free calcium levels, activation of nitric oxide synthase (NOS), caspase-3 and -9, cytochrome c release, and apoptotic cell death. In contrast, these apoptotic biochemical changes were not detected in HUVECs treated with 5 microM MG and 30 mM glucose, which appeared to undergo necrosis. Pretreatment with nitric oxide (NO) scavengers could inhibit 5 microM MG/20 mM glucose-induced cytochrome c release, decrease activation of caspase-9 and caspase-3, and increase the gene expression and protein levels of p53 and p21, which are known to be involved in apoptotic signaling. Inhibition of p53 protein expression using small interfering RNA (siRNA) blocked the activation of p21 and the cell apoptosis induced by 5 microM MG/20 mM glucose. In contrast, inhibition of p21 protein expression by siRNA prevented apoptosis in HUVECs but had no effect on p53 expression. These results collectively suggest that the treatment dosage of MG and glucose could determine the mode of cell death (apoptosis vs. necrosis) in HUVECs, and both ROS and NO played important roles in MG/HG-induced apoptosis of these cells.
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Affiliation(s)
- Wen-Hsiung Chan
- Department of Bioscience Technology and Center for Nanotechnology, Chung Yuan Christian University, Chung Li, Taiwan.
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25
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Huang LH, Shiao NH, Hsuuw YD, Chan WH. Protective effects of resveratrol on ethanol-induced apoptosis in embryonic stem cells and disruption of embryonic development in mouse blastocysts. Toxicology 2007; 242:109-22. [DOI: 10.1016/j.tox.2007.09.015] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2007] [Revised: 09/11/2007] [Accepted: 09/11/2007] [Indexed: 02/03/2023]
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26
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Wang D, Lu S, Dong Z. Regulation of TGF-beta1 gene transcription in human prostate cancer cells by nitric oxide. Prostate 2007; 67:1825-33. [PMID: 17941092 DOI: 10.1002/pros.20669] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Overexpression of transforming growth factor (TGF)-beta1 is associated with advanced prostate cancer. Our previous studies showed an inverse correlation between the expressions of TGF-beta1 and inducible nitric oxide synthase (iNOS) in prostatic tumors in mice. The purpose of this study was to investigate regulation of TGF-beta1 expression in human prostate cancer cells by nitric oxide (NO). METHODS Expression of TGF-beta1 in the three well-characterized lines of human prostate cancer cells (PC-3MM2, LNCaP, and DU145) was determined by using the enzyme-linked immunoabsorbance assay (ELISA), real-time reverse-transcriptase PCR (RT-PCR), nuclear run-on, and promoter activity analyses. RESULTS Expression of both TGF-beta1 protein and mRNA was inhibited in both dose- and time-dependent manners by NO donors sodium nitroprusside (SNP), S-nitroso-N-acetylpenicilamine (SNAP), S-nitrosoglutathione (GSNO), and (+/-)-(E)-methyl-2-[(E)-hydroxyimino]-5-nitro-6-methoxy-3-hexeneamide (NOR-1) and by transfection of iNOS. The inhibitory effects of SNP and iNOS on TGF-beta1 expression were reduced in cells treated with NO scavengers N-dithiocarboxysarcosine (DTCS), 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (PTIO), and hemoglobin, or with the iNOS inhibitor N-methyl-arginine (NMA). SNP downregulated the in vitro transcription of TGF-beta1 mRNA, inhibited TGF-beta1 promoter activity, but had no significant effects on TGF-beta1 mRNA stability. CONCLUSION These results show that NO downregulates TGF-beta1 expression in prostate cancer cells at transcription level by suppressing the de novo synthesis of TGF-beta1 mRNA.
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Affiliation(s)
- Daren Wang
- Division of Experimental Hematology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.
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27
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The Signaling Cascades of Ginkgolide B-Induced Apoptosis in MCF-7 Breast Cancer Cells. Int J Mol Sci 2007. [DOI: 10.3390/i8111177] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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Palmer LA, Doctor A, Chhabra P, Sheram ML, Laubach VE, Karlinsey MZ, Forbes MS, Macdonald T, Gaston B. S-nitrosothiols signal hypoxia-mimetic vascular pathology. J Clin Invest 2007; 117:2592-601. [PMID: 17786245 PMCID: PMC1952618 DOI: 10.1172/jci29444] [Citation(s) in RCA: 130] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2006] [Accepted: 05/24/2007] [Indexed: 12/27/2022] Open
Abstract
NO transfer reactions between protein and peptide cysteines have been proposed to represent regulated signaling processes. We used the pharmaceutical antioxidant N-acetylcysteine (NAC) as a bait reactant to measure NO transfer reactions in blood and to study the vascular effects of these reactions in vivo. NAC was converted to S-nitroso-N-acetylcysteine (SNOAC), decreasing erythrocytic S-nitrosothiol content, both during whole-blood deoxygenation ex vivo and during a 3-week protocol in which mice received high-dose NAC in vivo. Strikingly, the NAC-treated mice developed pulmonary arterial hypertension (PAH) that mimicked the effects of chronic hypoxia. Moreover, systemic SNOAC administration recapitulated effects of both NAC and hypoxia. eNOS-deficient mice were protected from the effects of NAC but not SNOAC, suggesting that conversion of NAC to SNOAC was necessary for the development of PAH. These data reveal an unanticipated adverse effect of chronic NAC administration and introduce a new animal model of PAH. Moreover, evidence that conversion of NAC to SNOAC during blood deoxygenation is necessary for the development of PAH in this model challenges conventional views of oxygen sensing and of NO signaling.
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Affiliation(s)
- Lisa A. Palmer
- Department of Pediatrics and
Department of Surgery, University of Virginia School of Medicine, and
Department of Chemistry, University of Virginia, Charlottesville, Virginia, USA
| | - Allan Doctor
- Department of Pediatrics and
Department of Surgery, University of Virginia School of Medicine, and
Department of Chemistry, University of Virginia, Charlottesville, Virginia, USA
| | - Preeti Chhabra
- Department of Pediatrics and
Department of Surgery, University of Virginia School of Medicine, and
Department of Chemistry, University of Virginia, Charlottesville, Virginia, USA
| | - Mary Lynn Sheram
- Department of Pediatrics and
Department of Surgery, University of Virginia School of Medicine, and
Department of Chemistry, University of Virginia, Charlottesville, Virginia, USA
| | - Victor E. Laubach
- Department of Pediatrics and
Department of Surgery, University of Virginia School of Medicine, and
Department of Chemistry, University of Virginia, Charlottesville, Virginia, USA
| | - Molly Z. Karlinsey
- Department of Pediatrics and
Department of Surgery, University of Virginia School of Medicine, and
Department of Chemistry, University of Virginia, Charlottesville, Virginia, USA
| | - Michael S. Forbes
- Department of Pediatrics and
Department of Surgery, University of Virginia School of Medicine, and
Department of Chemistry, University of Virginia, Charlottesville, Virginia, USA
| | - Timothy Macdonald
- Department of Pediatrics and
Department of Surgery, University of Virginia School of Medicine, and
Department of Chemistry, University of Virginia, Charlottesville, Virginia, USA
| | - Benjamin Gaston
- Department of Pediatrics and
Department of Surgery, University of Virginia School of Medicine, and
Department of Chemistry, University of Virginia, Charlottesville, Virginia, USA
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Lu Z, Tao Y, Zhou Z, Zhang J, Li C, Ou L, Zhao B. Mitochondrial reactive oxygen species and nitric oxide-mediated cancer cell apoptosis in 2-butylamino-2-demethoxyhypocrellin B photodynamic treatment. Free Radic Biol Med 2006; 41:1590-605. [PMID: 17045927 DOI: 10.1016/j.freeradbiomed.2006.08.021] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2006] [Revised: 07/19/2006] [Accepted: 08/26/2006] [Indexed: 01/13/2023]
Abstract
Photodynamic therapy (PDT) is a novel and promising cancer treatment which employs a combination of a photosensitizing chemical and visible light to induce apoptosis in cancer cells. Singlet oxygen has been recognized as the main origin of oxidative stress in PDT. However, the precise mechanism of PDT-induced apoptosis is not well characterized, especially the dualistic role of nitric oxide (NO). To dissect the apoptosis pathways triggered by PDT, the intracellular free radicals in MCF-7 cells were investigated by examining a novel photosensitizer 2-butylamino-2-demethoxyhypocrellin B (2-BA-2-DMHB)-mediated PDT. It was found that exposure of the cells to 2-BA-2-DMHB and irradiation resulted in a significant increase of intracellular ROS in minutes, and then followed by cytoplasmic free calcium enhancement, mitochondrial nitric oxide synthase (mtNOS) activation, cytochrome c release, and apoptotic death. Scavengers of singlet oxygen or NO could attenuate PDT-induced cell viability loss, nucleus morphology changes, cytochrome c release, mitochondria swelling, and apo-apoptosis gene p53 and p21 mRNA levels. The results suggested that both ROS and NO played important roles in the apoptosis-induced by PDT.
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Affiliation(s)
- Zhongbing Lu
- State Key Laboratory of Brain and Recognition Laboratory, Institute of Biophysics, The Chinese Academy of Sciences, Beijing 100101, People's Republic of China
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Thomas DD, Ridnour LA, Espey MG, Donzelli S, Ambs S, Hussain SP, Harris CC, DeGraff W, Roberts DD, Mitchell JB, Wink DA. Superoxide fluxes limit nitric oxide-induced signaling. J Biol Chem 2006; 281:25984-93. [PMID: 16829532 DOI: 10.1074/jbc.m602242200] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Independently, superoxide (O2-) and nitric oxide (NO) are biologically important signaling molecules. When co-generated, these radicals react rapidly to form powerful oxidizing and nitrating intermediates. Although this reaction was once thought to be solely cytotoxic, herein we demonstrate using MCF7, macrophage, and endothelial cells that when nanomolar levels of NO and O2- were produced concomitantly, the effective NO concentration was established by the relative fluxes of these two radicals. Differential regulation of sGC, pERK, HIF-1alpha, and p53 were used as biological dosimeters for NO concentration. Introduction of intracellular- or extracellular-generated O2- during NO generation resulted in a concomitant increase in oxidative intermediates with a decrease in steady-state NO concentrations and a proportional reduction in the levels of sGC, ERK, HIF-1alpha, and p53 regulation. NO responses were restored by addition of SOD. The intermediates formed from the reactions of NO with O2- were non-toxic, did not form 3-nitrotyrosine, nor did they elicit any signal transduction responses. H2O2 in bolus or generated from the dismutation of O2- by SOD, was cytotoxic at high concentrations and activated p53 independent of NO. This effect was completely inhibited by catalase, suppressed by NO, and exacerbated by intracellular catalase inhibition. We conclude that the reaction of O2- with NO is an important regulatory mechanism, which modulates signaling pathways by limiting steady-state levels of NO and preventing H2O2 formation from O2-.
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Affiliation(s)
- Douglas D Thomas
- Tumor Biology Section, Radiation Biology Branch, National Institutes of Health, Bethesda, MD 20892, USA.
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Ridnour LA, Thomas DD, Donzelli S, Espey MG, Roberts DD, Wink DA, Isenberg JS. The biphasic nature of nitric oxide responses in tumor biology. Antioxid Redox Signal 2006; 8:1329-37. [PMID: 16910780 DOI: 10.1089/ars.2006.8.1329] [Citation(s) in RCA: 183] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The dual or biphasic responses of cancer to nitric oxide (NO) arise from its concentration dependent ability to regulate tumor growth, migration, invasion, survival, angiogenesis, and metastasis. The outcome of these various NO-dependent processes is dictated by several factors including NO flux, the chemical redox environment, and the duration of NO exposure. Further, it was recently discovered that an NO-induced redox flux in vascular endothelial cells hypersensitizes these cells to the antiangiogenic effects of thrombospondin-1. This suggests a novel treatment paradigm for targeting tumor-driven angiogenesis that combines redox modulation with mimetic derivatives of thrombospondin-1. This article discusses the biphasic nature of NO in cancer biology and the implications of NO-driven redox flux for modulation of tumor-stimulated angiogenesis, growth, and metastasis.
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Affiliation(s)
- Lisa A Ridnour
- Tumor Biology Section, Radiation Biology Branch, National Cancer Institute, NIH, Bethesda, MD 20892, USA.
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32
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Depre C, Wang L, Sui X, Qiu H, Hong C, Hedhli N, Ginion A, Shah A, Pelat M, Bertrand L, Wagner T, Gaussin V, Vatner SF. H11 Kinase Prevents Myocardial Infarction by Preemptive Preconditioning of the Heart. Circ Res 2006; 98:280-8. [PMID: 16373598 DOI: 10.1161/01.res.0000201284.45482.e8] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Ischemic preconditioning confers powerful protection against myocardial infarction through pre-emptive activation of survival signaling pathways, but it remains difficult to apply to patients with ischemic heart disease, and its effects are transient. Promoting a sustained activation of preconditioning mechanisms in vivo would represent a novel approach of cardioprotection. We tested the role of the protein H11 kinase (H11K), which accumulates by 4- to 6-fold in myocardium of patients with chronic ischemic heart disease and in experimental models of ischemia. This increased expression was quantitatively reproduced in cardiac myocytes using a transgenic (TG) mouse model. After 45 minutes of coronary artery occlusion and reperfusion, hearts from TG mice showed an 82+/-5% reduction in infarct size compared with wild-type (WT), which was similar to the 84+/-4% reduction of infarct size observed in WT after a protocol of ischemic preconditioning. Hearts from TG mice showed significant activation of survival kinases participating in preconditioning, including Akt and the 5'AMP-activated protein kinase (AMPK). H11K directly binds to both Akt and AMPK and promotes their nuclear translocation and their association in a multiprotein complex, which results in a stimulation of survival mechanisms in cytosol and nucleus, including inhibition of proapoptotic effectors (glycogen synthase kinase-3beta, Bad, and Foxo), activation of antiapoptotic effectors (protein kinase Cepsilon, endothelial and inducible NO synthase isoforms, and heat shock protein 70), increased expression of the hypoxia-inducible factor-1alpha, and genomic switch to glucose utilization. Therefore, activation of survival pathways by H11K preemptively triggers the antiapoptotic and metabolic response to ischemia and is sufficient to confer cardioprotection in vivo equally potent to preconditioning.
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Affiliation(s)
- Christophe Depre
- Cardiovascular Research Institute, Department of Cell Biology and Molecular Medicine, University of Medicine and Dentistry of New Jersey, Medical School, Newark, NJ 07103, USA.
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Staib F, Robles AI, Varticovski L, Wang XW, Zeeberg BR, Sirotin M, Zhurkin VB, Hofseth LJ, Hussain SP, Weinstein JN, Galle PR, Harris CC. The p53 tumor suppressor network is a key responder to microenvironmental components of chronic inflammatory stress. Cancer Res 2006; 65:10255-64. [PMID: 16288013 PMCID: PMC1421332 DOI: 10.1158/0008-5472.can-05-1714] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Activation of the p53 network plays a central role in the inflammatory stress response associated with ulcerative colitis and may modulate cancer risk in patients afflicted with this chronic disease. Here, we describe the gene expression profiles associated with four microenvironmental components of the inflammatory response (NO*, H2O2, DNA replication arrest, and hypoxia) that result in p53 stabilization and activation. Isogenic HCT116 and HCT116 TP53-/- colon cancer cells were exposed to the NO* donor Sper/NO, H2O2, hypoxia, or hydroxyurea, and their mRNA was analyzed using oligonucleotide microarrays. Overall, 1,396 genes changed in a p53-dependent manner (P < 0.001), with the majority representing a "unique" profile for each condition. Only 14 genes were common to all four conditions. Included were eight known p53 target genes. Hierarchical sample clustering distinguished early (1 and 4 hours) from late responses (8, 12, and 24 hours), and each treatment was differentiated from the others. Overall, NO* and hypoxia stimulated similar transcriptional responses. Gene ontology analysis revealed cell cycle as a key feature of stress responses and confirmed the similarity between NO* and hypoxia. Cell cycle profiles analyzed by flow cytometry showed that NO* and hypoxia induced quiescent S-phase and G2-M arrest. Using a novel bioinformatic algorithm, we identified several putative p53-responsive elements among the genes induced in a p53-dependent manner, including four [KIAA0247, FLJ12484, p53CSV (HSPC132), and CNK (PLK3)] common to all exposures. In summary, the inflammatory stress response is a complex, integrated biological network in which p53 is a key molecular node regulating gene expression.
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Affiliation(s)
| | | | | | | | | | - Michail Sirotin
- Experimental and Computational Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland
| | - Victor B. Zhurkin
- Experimental and Computational Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland
| | - Lorne J. Hofseth
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, University of South Carolina, Columbia, South Carolina; and
| | | | | | - Peter R. Galle
- First Department of Internal Medicine, Johannes Gutenberg University of Mainz, Mainz, Germany
| | - Curtis C. Harris
- Laboratories of Human Carcinogenesis
- Requests for reprints: Curtis C. Harris, Laboratory of Human Carcinogenesis, National Cancer Institute, NIH, 37 Convent Drive, Room 3068, MSC 4255, Bethesda, MD 20892-4255. Phone: 301-496-2048; Fax: 301-496-0497; E-mail:
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Affiliation(s)
- Seth Love
- Department of Neuropathology, University of Bristol Institute of Clinical Neuroscience
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