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Majhi K, Let M, Halder U, Chitikineni A, Varshney RK, Bandopadhyay R. Copper removal capability and genomic insight into the lifestyle of copper mine inhabiting Micrococcus yunnanensis GKSM13. ENVIRONMENTAL RESEARCH 2023; 223:115431. [PMID: 36754109 DOI: 10.1016/j.envres.2023.115431] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/31/2023] [Accepted: 02/04/2023] [Indexed: 06/18/2023]
Abstract
Heavy metal pollution in mining areas is a serious environmental concern. The exploration of mine-inhabiting microbes, especially bacteria may use as an effective alternative for the remediation of mining hazards. A highly copper-tolerant strain GKSM13 was isolated from the soil of the Singhbhum copper mining area and characterized for significant copper (Cu) removal potential and tolerance to other heavy metals. The punctate, yellow-colored, coccoid strain GKSM13 was able to tolerate 500 mg L-1 Cu2+. Whole-genome sequencing identified strain GKSM13 as Micrococcus yunnanensis, which has a 2.44 Mb genome with 2176 protein-coding genes. The presence of putative Cu homeostasis genes and other heavy metal transporters/response regulators or transcription factors may responsible for multi-metal resistance. The maximum Cu2+ removal of 89.2% was achieved at a pH of 7.5, a temperature of 35.5 °C, and an initial Cu2+ ion concentration of 31.5 mg L-1. Alteration of the cell surface, deposition of Cu2+ in the bacterial cell, and the involvement of hydroxyl, carboxyl amide, and amine groups in Cu2+ removal were observed using microscopic and spectroscopic analysis. This study is the first to reveal a molecular-based approach for the multi-metal tolerance and copper homeostasis mechanism of M. yunnanensis GKSM13.
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Affiliation(s)
- Krishnendu Majhi
- Microbiology Section, Department of Botany, The University of Burdwan, Burdwan, West Bengal, 713104, India; Department of Botany, Ananda Chandra College, Jalpaiguri, 735101, India
| | - Moitri Let
- Microbiology Section, Department of Botany, The University of Burdwan, Burdwan, West Bengal, 713104, India
| | - Urmi Halder
- Microbiology Section, Department of Botany, The University of Burdwan, Burdwan, West Bengal, 713104, India
| | - Annapurna Chitikineni
- Center of Excellence in Genomics and Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India; State Agricultural Biotechnology Centre, Centre for Crop and Food Innovation, Murdoch University, Murdoch, 6500, Australia
| | - Rajeev K Varshney
- Center of Excellence in Genomics and Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India; State Agricultural Biotechnology Centre, Centre for Crop and Food Innovation, Murdoch University, Murdoch, 6500, Australia
| | - Rajib Bandopadhyay
- Microbiology Section, Department of Botany, The University of Burdwan, Burdwan, West Bengal, 713104, India.
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2
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Valenti R, Jabłońska J, Tawfik DS. Characterization of ancestral Fe/Mn superoxide dismutases indicates their cambialistic origin. Protein Sci 2022; 31:e4423. [PMID: 36173172 PMCID: PMC9490801 DOI: 10.1002/pro.4423] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 06/29/2022] [Accepted: 08/09/2022] [Indexed: 11/10/2022]
Abstract
Superoxide dismutases (SODs) are critical metalloenzymes mitigating the damages of the modern oxygenated world. However, the emergence of one family of SODs, the Fe/Mn SOD, has been recurrently proposed to predate the great oxygenation event (GOE). This ancient family lacks metal binding selectivity, but displays strong catalytic selectivity. Therefore, some homologues would only be active when bound to Fe or Mn, although others, dubbed cambialistic, would function when loaded with either ion. This posed the longstanding question about the identity of the cognate metal ion of the first SODs to emerge. In this work, we utilize ancestral sequence reconstruction techniques to infer the earliest SODs. We show that the “ancestors” are active in vivo and in vitro. Further, we test their metal specificity and demonstrate that they are cambialistic in nature. Our findings shed light on how the predicted Last Common Universal Ancestor was capable of dealing with decomposition of the superoxide anion, and the early relationship between life, oxygen, and metal ion availability.
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Affiliation(s)
- Rosario Valenti
- Department of Biomolecular Sciences Weizmann Institute of Science Rehovot Israel
| | - Jagoda Jabłońska
- Department of Biomolecular Sciences Weizmann Institute of Science Rehovot Israel
| | - Dan S. Tawfik
- Department of Biomolecular Sciences Weizmann Institute of Science Rehovot Israel
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3
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Coelho DR, Palma FR, Paviani V, He C, Danes JM, Huang Y, Calado JCP, Hart PC, Furdui CM, Poole LB, Schipma MJ, Bonini MG. Nuclear-localized, iron-bound superoxide dismutase-2 antagonizes epithelial lineage programs to promote stemness of breast cancer cells via a histone demethylase activity. Proc Natl Acad Sci U S A 2022; 119:e2110348119. [PMID: 35858297 PMCID: PMC9303987 DOI: 10.1073/pnas.2110348119] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 03/27/2022] [Indexed: 01/16/2023] Open
Abstract
The dichotomous behavior of superoxide dismutase-2 (SOD2) in cancer biology has long been acknowledged and more recently linked to different posttranslational forms of the enzyme. However, a distinctive activity underlying its tumor-promoting function is yet to be described. Here, we report that acetylation, one of such posttranslational modifications (PTMs), increases SOD2 affinity for iron, effectively changing the biochemical function of this enzyme from that of an antioxidant to a demethylase. Acetylated, iron-bound SOD2 localizes to the nucleus, promoting stem cell gene expression via removal of suppressive epigenetic marks such as H3K9me3 and H3K927me3. Particularly, H3K9me3 was specifically removed from regulatory regions upstream of Nanog and Oct-4, two pluripotency factors involved in cancer stem cell reprogramming. Phenotypically, cells expressing nucleus-targeted SOD2 (NLS-SOD2) have increased clonogenicity and metastatic potential. FeSOD2 operating as H3 demethylase requires H2O2 as substrate, which unlike cofactors of canonical demethylases (i.e., oxygen and 2-oxoglutarate), is more abundant in tumor cells than in normal tissue. Therefore, our results indicate that FeSOD2 is a demethylase with unique activities and functions in the promotion of cancer evolution toward metastatic phenotypes.
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Affiliation(s)
- Diego R. Coelho
- Department of Medicine, Division of Hematology Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Flavio R. Palma
- Department of Medicine, Division of Hematology Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Veronica Paviani
- Department of Medicine, Division of Hematology Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Chenxia He
- Department of Medicine, Division of Endocrinology, Metabolism and Molecular Medicine, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Jeanne M. Danes
- Department of Medicine, Division of Hematology Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Yunping Huang
- Department of Medicine, Division of Hematology Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Juliana C. P. Calado
- Department of Medicine, Division of Hematology Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Peter C. Hart
- College of Science, Health and Pharmacy, Roosevelt University, Schaumburg, IL 60173
| | - Cristina M. Furdui
- Department of Internal Medicine, Section on Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157
| | - Leslie B. Poole
- Department of Biochemistry, Section on Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157
| | - Matthew J. Schipma
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
- Quantitative Data Sciences Core and Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Marcelo G. Bonini
- Department of Medicine, Division of Hematology Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
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4
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Chen H, Cui Z, Lu W, Wang P, Wang J, Zhou Z, Zhang N, Wang Z, Lin T, Song Y, Liu L, Huang X, Chen P, Tang G, Duan Y, Wang B, Zhang H, Xu X, Yang Y, Qin X, Song F. Association between serum manganese levels and diabetes in chinese adults with hypertension. J Clin Hypertens (Greenwich) 2022; 24:918-927. [PMID: 35748116 PMCID: PMC9278588 DOI: 10.1111/jch.14520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 05/14/2022] [Accepted: 05/17/2022] [Indexed: 01/10/2023]
Abstract
Manganese (Mn) is an essential trace metal element that is associated with diabetes; however, the results of previous studies are inconsistent. Furthermore, few studies have been conducted in a hypertensive population. The purpose of this study is to explore the relationship between manganese and diabetes in a population with hypertension. A cross‐sectional study was conducted, including 2575 hypertensive individuals from 14 provinces in China. Serum manganese concentrations were measured by the inductively coupled plasma mass spectrometry (ICP‐MS) method. And logistic regression models were used to analyze the association between serum manganese and the risk of diabetes. The prevalence of diabetes was 27.0% in this hypertensive population. In logistic regression models, the odds ratios (95% confidence interval) for diabetes in tertile subgroups were 1.40 (1.12, 1.76) and 1.32 (1.05, 1.65) for tertiles 1 and tertiles 3, respectively, compared to tertile 2 (reference). Additionally, an interaction between sex and manganese was observed. The odds ratios (95% confidence interval) for diabetes were 1.29 (0.95, 1.75) and 0.96 (0.70, 1.31) for tertiles 1 and tertiles 3 among males, and 1.44 (1.01, 2.04) and 1.81 (1.29, 2.55) for tertiles 1 and tertiles 3 among females, respectively, compared to tertile 2. In conclusion, a U‐shaped association between serum manganese and diabetes was observed in a Chinese population with hypertension, and the association was modified by sex.
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Affiliation(s)
- Hong Chen
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong Province, China
| | - Zhixin Cui
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong Province, China
| | - Wenhai Lu
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong Province, China.,Pingdi Public Health Service Center, Shenzhen, China
| | - Ping Wang
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong Province, China
| | - Jia Wang
- Department of Cardiovascular Medicine, Binzhou Medical University Hospital, Binzhou, China
| | - Ziyi Zhou
- Graduate School at Shenzhen, Tsinghua University, Shenzhen, China.,Shenzhen Evergreen Medical Institute, Shenzhen, China
| | - Nan Zhang
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - Zhuo Wang
- Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, Department of Nutrition and Health, College of Food Sciences and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Tengfei Lin
- Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, Department of Nutrition and Health, College of Food Sciences and Nutritional Engineering, China Agricultural University, Beijing, China.,College of Pharmacy, Jinan University, Guangzhou, China
| | - Yun Song
- Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, Department of Nutrition and Health, College of Food Sciences and Nutritional Engineering, China Agricultural University, Beijing, China.,Institute of Biomedicine, Anhui Medical University, Hefei, China
| | - Lishun Liu
- Graduate School at Shenzhen, Tsinghua University, Shenzhen, China.,Shenzhen Evergreen Medical Institute, Shenzhen, China
| | - Xiao Huang
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Ping Chen
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Genfu Tang
- School of Heath Administration, Anhui Medical University, Hefei, China
| | - Yong Duan
- Yunnan Key Laboratory of Laboratory Medicine, Kunming, China.,Department of Clinical Laboratory, the First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Binyan Wang
- Shenzhen Evergreen Medical Institute, Shenzhen, China.,Institute of Biomedicine, Anhui Medical University, Hefei, China.,National Clinical Research Center for Kidney Disease, State Key Laboratory for Organ Failure Research, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hao Zhang
- Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, Department of Nutrition and Health, College of Food Sciences and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Xiping Xu
- Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, Department of Nutrition and Health, College of Food Sciences and Nutritional Engineering, China Agricultural University, Beijing, China.,Institute of Biomedicine, Anhui Medical University, Hefei, China.,National Clinical Research Center for Kidney Disease, State Key Laboratory for Organ Failure Research, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yan Yang
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong Province, China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, Guangdong Province, PR China.,Guangdong Provincial Engineering Laboratory for Nutrition Translation, Guangzhou, Guangdong Province, PR China
| | - Xianhui Qin
- Institute of Biomedicine, Anhui Medical University, Hefei, China.,National Clinical Research Center for Kidney Disease, State Key Laboratory for Organ Failure Research, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Fenglin Song
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan, Guangdong Province, China
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5
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Oxidative stress response system in Escherichia coli arising from diphenyl ditelluride (PhTe) 2 exposure. Toxicol In Vitro 2022; 83:105404. [PMID: 35654257 DOI: 10.1016/j.tiv.2022.105404] [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: 01/21/2022] [Revised: 04/25/2022] [Accepted: 05/26/2022] [Indexed: 11/20/2022]
Abstract
The toxicity of diphenyl ditelluride (PhTe)2 is associated with its ability to oxidize sulfhydryl groups from biological molecules. Therefore, we evaluated possible molecular mechanisms of toxicity induced by this organochalcogen in Escherichia coli (E. coli) by evaluating oxidative damage markers, relative expression of genes associated with the cellular redox state in bacteria, such as katG, sodA, sodB, soxS, and oxyR, as well as the activity of enzymes responsible for cellular redox balance. After exposure of (PhTe)2 (6, 12, and 24 μg/mL), there was a decrease in non-protein thiols (NPSH) levels, an increase in protein carbonylation and lipid peroxidation in E. coli. Intra- and extracellular reactive species (RS) was increased at concentrations of 6, 12, and 24 μg/mL. The superoxide dismutase (SOD) activity was increased at the three concentrations tested, while catalase (CAT) activity was higher at 12 and 24 μg/mL. The soxS gene showed lower expression at the three concentrations tested, while the oxyR gene was supressed at 24 μg/mL. The katG antioxidant response gene showed lower expression, and sodA and sodB were positively activated, except for sodB at 6 μg/mL. Our findings demonstrate that exposure to (PhTe)2 induced RS formation, NPSH depletion and changes in transcriptional factors regulation, characterizing it as a multi-target compound, causing disruption in cellular oxidative state, as well as molecular mechanisms associated in E. coli.
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6
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Ogle MM, Trevino R, Schell J, Varmazyad M, Horikoshi N, Gius D. Manganese Superoxide Dismutase Acetylation and Regulation of Protein Structure in Breast Cancer Biology and Therapy. Antioxidants (Basel) 2022; 11:635. [PMID: 35453320 PMCID: PMC9024550 DOI: 10.3390/antiox11040635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 02/01/2023] Open
Abstract
The loss and/or dysregulation of several cellular and mitochondrial antioxidants' expression or enzymatic activity, which leads to the aberrant physiological function of these proteins, has been shown to result in oxidative damage to cellular macromolecules. In this regard, it has been surmised that the disruption of mitochondrial networks responsible for maintaining normal metabolism is an established hallmark of cancer and a novel mechanism of therapy resistance. This altered metabolism leads to aberrant accumulation of reactive oxygen species (ROS), which, under specific physiological conditions, leads to a potential tumor-permissive cellular environment. In this regard, it is becoming increasingly clear that the loss or disruption of mitochondrial oxidant scavenging enzymes may be, in specific tumors, either an early event in transformation or exhibit tumor-promoting properties. One example of such an antioxidant enzyme is manganese superoxide dismutase (MnSOD, also referred to as SOD2), which detoxifies superoxide, a ROS that has been shown, when its normal physiological levels are disrupted, to lead to oncogenicity and therapy resistance. Here, we will also discuss how the acetylation of MnSOD leads to a change in detoxification function that leads to a cellular environment permissive for the development of lineage plasticity-like properties that may be one mechanism leading to tumorigenic and therapy-resistant phenotypes.
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Affiliation(s)
- Meredith M. Ogle
- Department of Radiation Oncology, Mays Cancer Center at UT Health San Antonio MD Anderson, 7979 Wurzbach Road, San Antonio, TX 78229, USA; (M.M.O.); (R.T.J.); (J.S.); (M.V.); (N.H.)
- Joe R. & Teresa Lozano Long School of Medicine, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
| | - Rolando Trevino
- Department of Radiation Oncology, Mays Cancer Center at UT Health San Antonio MD Anderson, 7979 Wurzbach Road, San Antonio, TX 78229, USA; (M.M.O.); (R.T.J.); (J.S.); (M.V.); (N.H.)
- Joe R. & Teresa Lozano Long School of Medicine, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
| | - Joseph Schell
- Department of Radiation Oncology, Mays Cancer Center at UT Health San Antonio MD Anderson, 7979 Wurzbach Road, San Antonio, TX 78229, USA; (M.M.O.); (R.T.J.); (J.S.); (M.V.); (N.H.)
- Joe R. & Teresa Lozano Long School of Medicine, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
| | - Mahboubeh Varmazyad
- Department of Radiation Oncology, Mays Cancer Center at UT Health San Antonio MD Anderson, 7979 Wurzbach Road, San Antonio, TX 78229, USA; (M.M.O.); (R.T.J.); (J.S.); (M.V.); (N.H.)
- Joe R. & Teresa Lozano Long School of Medicine, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
| | - Nobuo Horikoshi
- Department of Radiation Oncology, Mays Cancer Center at UT Health San Antonio MD Anderson, 7979 Wurzbach Road, San Antonio, TX 78229, USA; (M.M.O.); (R.T.J.); (J.S.); (M.V.); (N.H.)
- Joe R. & Teresa Lozano Long School of Medicine, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
| | - David Gius
- Department of Radiation Oncology, Mays Cancer Center at UT Health San Antonio MD Anderson, 7979 Wurzbach Road, San Antonio, TX 78229, USA; (M.M.O.); (R.T.J.); (J.S.); (M.V.); (N.H.)
- Joe R. & Teresa Lozano Long School of Medicine, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
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7
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Smethurst DGJ, Shcherbik N. Interchangeable utilization of metals: New perspectives on the impacts of metal ions employed in ancient and extant biomolecules. J Biol Chem 2021; 297:101374. [PMID: 34732319 PMCID: PMC8633580 DOI: 10.1016/j.jbc.2021.101374] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 02/08/2023] Open
Abstract
Metal ions provide considerable functionality across biological systems, and their utilization within biomolecules has adapted through changes in the chemical environment to maintain the activity they facilitate. While ancient earth's atmosphere was rich in iron and manganese and low in oxygen, periods of atmospheric oxygenation significantly altered the availability of certain metal ions, resulting in ion replacement within biomolecules. This adaptation mechanism has given rise to the phenomenon of metal cofactor interchangeability, whereby contemporary proteins and nucleic acids interact with multiple metal ions interchangeably, with different coordinated metals influencing biological activity, stability, and toxic potential. The ability of extant organisms to adapt to fluctuating metal availability remains relevant in a number of crucial biomolecules, including the superoxide dismutases of the antioxidant defense systems and ribonucleotide reductases. These well-studied and ancient enzymes illustrate the potential for metal interchangeability and adaptive utilization. More recently, the ribosome has also been demonstrated to exhibit interchangeable interactions with metal ions with impacts on function, stability, and stress adaptation. Using these and other examples, here we review the biological significance of interchangeable metal ions from a new angle that combines both biochemical and evolutionary viewpoints. The geochemical pressures and chemical properties that underlie biological metal utilization are discussed in the context of their impact on modern disease states and treatments.
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Affiliation(s)
- Daniel G J Smethurst
- Department for Cell Biology and Neuroscience, School of Osteopathic Medicine, Rowan University, Stratford, New Jersey, USA.
| | - Natalia Shcherbik
- Department for Cell Biology and Neuroscience, School of Osteopathic Medicine, Rowan University, Stratford, New Jersey, USA.
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8
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Weiss CH, Merkel C, Zimmer A. Impact of iron raw materials and their impurities on CHO metabolism and recombinant protein product quality. Biotechnol Prog 2021; 37:e3148. [PMID: 33742789 PMCID: PMC8459231 DOI: 10.1002/btpr.3148] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 01/31/2021] [Accepted: 02/28/2021] [Indexed: 12/12/2022]
Abstract
Cell culture medium (CCM) composition affects cell growth and critical quality attributes (CQAs) of monoclonal antibodies (mAbs) and recombinant proteins. One essential compound needed within the medium is iron because of its central role in many cellular processes. However, iron is also participating in Fenton chemistry leading to the formation of reactive oxygen species (ROS) causing cellular damage. Therefore, this study sought to investigate the impact of iron in CCM on Chinese hamster ovary (CHO) cell line performance, and CQAs of different recombinant proteins. Addition of either ferric ammonium citrate (FAC) or ferric citrate (FC) into CCM revealed major differences within cell line performance and glycosylation pattern, whereby ammonium was not involved in the observed differences. Inductively coupled plasma mass spectrometry (ICP‐MS) analysis identified varying levels of impurities present within these iron sources, and manganese impurity rather than iron was proven to be the root cause for increased cell growth, titer, and prolonged viability, as well as altered glycosylation levels. Contrary effects on cell performance and protein glycosylation were observed for manganese and iron. The use of low impurity iron raw material is therefore crucial to control the effect of iron and manganese independently and to support and guarantee consistent and reproducible cell culture processes.
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Affiliation(s)
- Christine H Weiss
- Merck Life Science, Upstream R&D, Darmstadt, Germany.,Institute for Organic Chemistry and Biochemistry, Technische Universität Darmstadt, Darmstadt, Germany
| | | | - Aline Zimmer
- Merck Life Science, Upstream R&D, Darmstadt, Germany
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9
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Wang X, Yuan W, Tao J, Xu M, Guo P. Interactions between Escherichia coli survival and manganese and iron oxides in water under freeze-thaw. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115237. [PMID: 33276253 DOI: 10.1016/j.envpol.2020.115237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/22/2020] [Accepted: 07/10/2020] [Indexed: 06/12/2023]
Abstract
Pathogenic survivals were dramatically affected by Fe3+ and Mn2+ under freeze-thaw (FT), and the dissolutions of manganese and iron oxides (MIOs) were also accelerated under FT. But the mutual influences of pathogenic bacterial survival and MIOs under FT have not been profoundly explored yet. In this work, aqueous systems containing Escherichia coli as well as synthetic ferrihydrite (Fh) and manganese dioxide (MnO2) were experimented under simulated FT cycles to study the mutual influences of metal oxides and bacteria survival while oxide dissolutions and appearances, bacterial morphology and activities (survival number, cell surface hydrophobicity (CSH) and superoxide dismutase (SOD)) were obtained. The results showed that broken E. coli cells by ice growth were observed, but both oxides promoted E. coli survival under FT stress and prolonged bacterial survival time by 1.2-2.9 times, which were mainly attributed to the release of Fe3+ and Mn2+ caused by FT. The dissolutions of Fh and MnO2 under FT, which took place at a low level in absence of E. coli cells, were markedly enhanced with bacterial interferences by 2-8 times and higher dissolved manganese concentrations were detected than iron. This was probably because that concentrated organic matters which were released from broken cells, rejected into unfrozen liquid layer and acted as electron donors and ligands to oxide dissolution. Compared with Fh system, more significant promotion of E. coli survival under FT in MnO2 systems were found because of more SOD generations associated with high dissolved manganese concentrations and the stronger cellular protection by MnO2 aggregations. The results suggested that FT significantly influenced the interactions between metal oxides and bacterial in water, resulting to changes in pathogen activity and metal element cycling.
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Affiliation(s)
- Xu Wang
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin University, Changchun, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, China; College of New Energy and Environment, Jilin University, Changchun, China
| | - Weilin Yuan
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin University, Changchun, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, China; College of New Energy and Environment, Jilin University, Changchun, China
| | - Jiahui Tao
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin University, Changchun, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, China; College of New Energy and Environment, Jilin University, Changchun, China
| | - Meng Xu
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin University, Changchun, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, China; College of New Energy and Environment, Jilin University, Changchun, China
| | - Ping Guo
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin University, Changchun, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, China; College of New Energy and Environment, Jilin University, Changchun, China.
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10
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Palma FR, He C, Danes JM, Paviani V, Coelho DR, Gantner BN, Bonini MG. Mitochondrial Superoxide Dismutase: What the Established, the Intriguing, and the Novel Reveal About a Key Cellular Redox Switch. Antioxid Redox Signal 2020; 32:701-714. [PMID: 31968997 PMCID: PMC7047081 DOI: 10.1089/ars.2019.7962] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Significance: Reactive oxygen species (ROS) are now widely recognized as central mediators of cell signaling. Mitochondria are major sources of ROS. Recent Advances: It is now clear that mitochondrial ROS are essential to activate responses to cellular microenvironmental stressors. Mediators of these responses reside in large part in the cytosol. Critical Issues: The primary form of ROS produced by mitochondria is the superoxide radical anion. As a charged radical anion, superoxide is restricted in its capacity to diffuse and convey redox messages outside of mitochondria. In addition, superoxide is a reductant and not particularly efficient at oxidizing targets. Because there are many opportunities for superoxide to be neutralized in mitochondria, it is not completely clear how redox cues generated in mitochondria are converted into diffusible signals that produce transient oxidative modifications in the cytosol or nucleus. Future Directions: To efficiently intervene at the level of cellular redox signaling, it seems that understanding how the generation of superoxide radicals in mitochondria is coupled with the propagation of redox messages is essential. We propose that mitochondrial superoxide dismutase (SOD2) is a major system converting diffusion-restricted superoxide radicals derived from the electron transport chain into highly diffusible hydrogen peroxide (H2O2). This enables the coupling of metabolic changes resulting in increased superoxide to the production of H2O2, a diffusible secondary messenger. As such, to determine whether there are other systems coupling metabolic changes to redox messaging in mitochondria as well as how these systems are regulated is essential.
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Affiliation(s)
- Flavio R Palma
- Division of Endocrinology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Chenxia He
- Division of Endocrinology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Jeanne M Danes
- Division of Endocrinology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Veronica Paviani
- Division of Endocrinology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Diego R Coelho
- Division of Endocrinology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Benjamin N Gantner
- Division of Endocrinology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Marcelo G Bonini
- Division of Endocrinology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin.,Department of Biophysics, Medical College of Wisconsin, Milwaukee, Wisconsin
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11
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The small RNA chaperone Hfq is a critical regulator for bacterial biosynthesis of selenium nanoparticles and motility in Rahnella aquatilis. Appl Microbiol Biotechnol 2020; 104:1721-1735. [DOI: 10.1007/s00253-019-10231-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 10/11/2019] [Accepted: 10/31/2019] [Indexed: 02/08/2023]
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12
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Zhang M, Qin Y, Huang L, Yan Q, Mao L, Xu X, Wang S, Zhang M, Chen L. The role of sodA and sodB in Aeromonas hydrophila resisting oxidative damage to survive in fish macrophages and escape for further infection. FISH & SHELLFISH IMMUNOLOGY 2019; 88:489-495. [PMID: 30877060 DOI: 10.1016/j.fsi.2019.03.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 03/04/2019] [Accepted: 03/08/2019] [Indexed: 06/09/2023]
Abstract
Several bacteria have been defined as extracellular pathogens; however, in recent years, it has been confirmed that they have the ability to survive and escape the attack of host phagocytes, thus causing further infection. Previous studies have shown that Aeromonas hydrophila could survive in fish macrophages; however, the mechanism remains unknown. In this study, sodA and sodB of the strain A. hydrophila B11 were stable silenced by shRNA. The survival rates of intracellular sodA-RNAi and sodB-RNAi decreased by 91.8% and 74.9% and the immune escape rates decreased by about 32% and 92% respectively. At the same time, reactive oxygen species (ROS) in fish macrophages that phagocytosed sodA-RNAi and sodB-RNAi increased by 40% and 32.6%, respectively, compared to those of macrophages that phagocytosed the wild-type strain. Compared to sodA, the expression of sodB predominates in A. hydrophila without oxidative stress; however, when exposed to oxidative stress, the magnitude of up-regulation of sodA expression is significantly higher than that of sodB. With increased of methyl viologen concentration, the survival rates of sodA-RNAi and sodB-RNAi were significantly decreased. The expressions of sodA and sodB did not affect the growth of A. hydrophila without oxidative stress, but the inhibition of sodA and sodB expression led to a slight decrease in bacterial growth under oxidative stress. These results indicated that (1) sodA and sodB play an important role in the process of bacterial resistance to ROS damage in host phagocytic cells, allowing them to survive or even escape fish macrophages; (2) the sodB expression was dominant in A. hydrophila without oxidative stress, the sodA expression was up-regulated more significantly under oxidative stress, and sodA and sodB contributed equally to the process of bacterial resistance to ROS; (3) sodA and sodB complement each other and cooperate in the process of intracellular survival of bacteria to protect against ROS damage.
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Affiliation(s)
- Meimei Zhang
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Yingxue Qin
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China.
| | - Lixing Huang
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Qingpi Yan
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China.
| | - Leilei Mao
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Xiaojin Xu
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Suyun Wang
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Mengmeng Zhang
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Liwei Chen
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China
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13
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Switch of Mitochondrial Superoxide Dismutase into a Prooxidant Peroxidase in Manganese-Deficient Cells and Mice. Cell Chem Biol 2019; 25:413-425.e6. [PMID: 29398562 DOI: 10.1016/j.chembiol.2018.01.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 11/06/2017] [Accepted: 01/05/2018] [Indexed: 12/20/2022]
Abstract
Superoxide radical anion (O2⋅‒) and other reactive oxygen species are constantly produced during respiration. In mitochondria, the dismutation of O2⋅‒ is accelerated by the mitochondrial superoxide dismutase 2 (SOD2), an enzyme that has been traditionally associated with antioxidant protection. However, increases in SOD2 expression promote oxidative stress, indicating that there may be a prooxidant role for SOD2. Here we show that SOD2, which normally binds manganese, can incorporate iron and generate an alternative isoform with peroxidase activity. The switch from manganese to iron allows FeSOD2 to utilize H2O2 to promote oxidative stress. We found that FeSOD2 is formed in cultured cells and in vivo. FeSOD2 causes mitochondrial dysfunction and higher levels of oxidative stress in cultured cells and in vivo. We show that formation of FeSOD2 converts an antioxidant defense into a prooxidant peroxidase that leads to cellular changes seen in multiple human diseases.
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14
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Mason RP, Ganini D. Immuno-spin trapping of macromolecules free radicals in vitro and in vivo - One stop shopping for free radical detection. Free Radic Biol Med 2019; 131:318-331. [PMID: 30552998 DOI: 10.1016/j.freeradbiomed.2018.11.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 11/03/2018] [Accepted: 11/10/2018] [Indexed: 12/14/2022]
Abstract
The only general technique that allows the unambiguous detection of free radicals is electron spin resonance (ESR). However, ESR spin trapping has severe limitations especially in biological systems. The greatest limitation of ESR is poor sensitivity relative to the low steady-state concentration of free radical adducts, which in cells and in vivo is much lower than the best sensitivity of ESR. Limitations of ESR have led to an almost desperate search for alternatives to investigate free radicals in biological systems. Here we explore the use of the immuno-spin trapping technique, which combine the specificity of the spin trapping to the high sensitivity and universal use of immunological techniques. All of the immunological techniques based on antibody binding have become available for free radical detection in a wide variety of biological systems.
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Affiliation(s)
- Ronald P Mason
- Inflammation, Immunity and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T.W. Alexander Drive, Research Triangle Park, NC 27709, USA.
| | - Douglas Ganini
- Inflammation, Immunity and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T.W. Alexander Drive, Research Triangle Park, NC 27709, USA.
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15
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Insights into the Dichotomous Regulation of SOD2 in Cancer. Antioxidants (Basel) 2017; 6:antiox6040086. [PMID: 29099803 PMCID: PMC5745496 DOI: 10.3390/antiox6040086] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 10/24/2017] [Accepted: 11/01/2017] [Indexed: 12/14/2022] Open
Abstract
While loss of antioxidant expression and the resultant oxidant-dependent damage to cellular macromolecules is key to tumorigenesis, it has become evident that effective oxidant scavenging is conversely necessary for successful metastatic spread. This dichotomous role of antioxidant enzymes in cancer highlights their context-dependent regulation during different stages of tumor development. A prominent example of an antioxidant enzyme with such a dichotomous role and regulation is the mitochondria-localized manganese superoxide dismutase SOD2 (MnSOD). SOD2 has both tumor suppressive and promoting functions, which are primarily related to its role as a mitochondrial superoxide scavenger and H₂O₂ regulator. However, unlike true tumor suppressor- or onco-genes, the SOD2 gene is not frequently lost, or rarely mutated or amplified in cancer. This allows SOD2 to be either repressed or activated contingent on context-dependent stimuli, leading to its dichotomous function in cancer. Here, we describe some of the mechanisms that underlie SOD2 regulation in tumor cells. While much is known about the transcriptional regulation of the SOD2 gene, including downregulation by epigenetics and activation by stress response transcription factors, further research is required to understand the post-translational modifications that regulate SOD2 activity in cancer cells. Moreover, future work examining the spatio-temporal nature of SOD2 regulation in the context of changing tumor microenvironments is necessary to allows us to better design oxidant- or antioxidant-based therapeutic strategies that target the adaptable antioxidant repertoire of tumor cells.
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16
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Zou X, Ratti BA, O'Brien JG, Lautenschlager SO, Gius DR, Bonini MG, Zhu Y. Manganese superoxide dismutase (SOD2): is there a center in the universe of mitochondrial redox signaling? J Bioenerg Biomembr 2017; 49:325-333. [PMID: 28616679 DOI: 10.1007/s10863-017-9718-8] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 05/29/2017] [Indexed: 02/06/2023]
Abstract
It is becoming increasingly clear that mitochondria drive cellular functions and in vivo phenotypes by directing the production rate and abundance of metabolites that are proposed to function as signaling molecules (Chandel 2015; Selak et al. 2005; Etchegaray and Mostoslavsky 2016). Many of these metabolites are intermediates that make up cellular metabolism, part of which occur in mitochondria (i.e. the TCA and urea cycles), while others are produced "on demand" mainly in response to alterations in the microenvironment in order to participate in the activation of acute adaptive responses (Mills et al. 2016; Go et al. 2010). Reactive oxygen species (ROS) are well suited for the purpose of executing rapid and transient signaling due to their short lived nature (Bae et al. 2011). Hydrogen peroxide (H2O2), in particular, possesses important characteristics including diffusibility and faster reactivity with specific residues such as methionine, cysteine and selenocysteine (Bonini et al. 2014). Therefore, it is reasonable to propose that H2O2 functions as a relatively specific redox signaling molecule. Even though it is now established that mtH2O2 is indispensable, at least for hypoxic adaptation and energetic and/or metabolic homeostasis (Hamanaka et al. 2016; Guzy et al. 2005), the question of how H2O2 is produced and regulated in the mitochondria is only partially answered. In this review, some roles of this indispensable signaling molecule in driving cellular metabolism will be discussed. In addition, we will discuss how H2O2 formation in mitochondria depends on and is controlled by MnSOD. Finally, we will conclude this manuscript by highlighting why a better understanding of redox hubs in the mitochondria will likely lead to new and improved therapeutics of a number of diseases, including cancer.
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Affiliation(s)
- Xianghui Zou
- Department of Radiation Oncology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Room 3-250, Lurie Research Building, 303 East Superior, Chicago, IL, 60611, USA.,Department of Pharmacology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.,Driskill Graduate Program in Life Science, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Bianca A Ratti
- Programa de Biociencias Aplicadas a Farmacia (PBF), Universidade Estadual de Maringa, Maringa, PR, Brazil.,Departments of Medicine and Pathology, University of Illinois College of Medicine in Chicago, Chicago, IL, USA
| | - Joseph Gerald O'Brien
- Department of Radiation Oncology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Room 3-250, Lurie Research Building, 303 East Superior, Chicago, IL, 60611, USA.,Department of Pharmacology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Sueli O Lautenschlager
- Programa de Biociencias Aplicadas a Farmacia (PBF), Universidade Estadual de Maringa, Maringa, PR, Brazil
| | - David R Gius
- Department of Radiation Oncology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Room 3-250, Lurie Research Building, 303 East Superior, Chicago, IL, 60611, USA.,Department of Pharmacology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Marcelo G Bonini
- Departments of Medicine and Pathology, University of Illinois College of Medicine in Chicago, Chicago, IL, USA
| | - Yueming Zhu
- Department of Radiation Oncology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Room 3-250, Lurie Research Building, 303 East Superior, Chicago, IL, 60611, USA. .,Department of Pharmacology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
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17
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Gravina F, Dobrzanski T, Olchanheski LR, Galvão CW, Reche PM, Pileggi SA, Azevedo RA, Sadowsky MJ, Pileggi M. Metabolic Interference of sod gene mutations on catalase activity in Escherichia coli exposed to Gramoxone® (paraquat) herbicide. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 139:89-96. [PMID: 28113116 DOI: 10.1016/j.ecoenv.2017.01.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 01/05/2017] [Accepted: 01/17/2017] [Indexed: 06/06/2023]
Abstract
Herbicides are continuously used to minimize the loss of crop productivity in agricultural environments. They can, however, cause damage by inhibiting the growth of microbiota via oxidative stress, due to the increased production of reactive oxygen species (ROS). Cellular responses to ROS involve the action of enzymes, including superoxide dismutase (SOD) and catalase (CAT). The objective of this study was to evaluate adaptive responses in Escherichia coli K-12 to paraquat, the active ingredient in the herbicide Gramoxone®. Mutant bacterial strains carrying deletions in genes encoding Mn-SOD (sodA) and Fe-SOD (sodB) were used and resulted in distinct levels of hydrogen peroxide production, interference in malondialdehyde, and viability. Mutations also resulted in different levels of interference with the activity of CAT isoenzymes and in the inactivation of Cu/Zn-SOD activity. These mutations may be responsible for metabolic differences among the evaluated strains, resulting in different patterns of antioxidative responses, depending on mutation background. While damage to the ΔsodB strain was minor at late log phase, the reverse was true at mid log phase for the ΔsodA strain. These results demonstrate the important role of these genes in defense against oxidative stress in different periods of growth. Furthermore, the lack of Cu/Zn-SOD activity in both mutant strains indicated that common metal cofactors likely interfere in SOD activity regulation. These results also indicate that E. coli K-12, a classical non-environmental strain, constitutes a model of phenotypic plasticity for adaptation to a redox-cycling herbicide through redundancy of different isoforms of SOD and CAT enzymes.
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Affiliation(s)
- Fernanda Gravina
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Campus Universitário de Uvaranas, Av. Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil
| | - Tatiane Dobrzanski
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Campus Universitário de Uvaranas, Av. Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil
| | - Luiz R Olchanheski
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, 05508-000 São Paulo, Brazil
| | - Carolina W Galvão
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Campus Universitário de Uvaranas, Av. Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil
| | - Péricles M Reche
- Departamento de Enfermagem e Saúde Pública, Universidade Estadual de Ponta Grossa, Campus Universitário de Uvaranas, Av. Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil
| | - Sonia A Pileggi
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Campus Universitário de Uvaranas, Av. Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil
| | - Ricardo A Azevedo
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900 Piracicaba, São Paulo, Brazil
| | - Michael J Sadowsky
- Department of Soil, Water, and Climate, and The BioTechnology Institute, University of Minnesota, St. Paul, MN 55108, USA
| | - Marcos Pileggi
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Campus Universitário de Uvaranas, Av. Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil.
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18
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Martin JE, Lisher JP, Winkler ME, Giedroc DP. Perturbation of manganese metabolism disrupts cell division in Streptococcus pneumoniae. Mol Microbiol 2017; 104:334-348. [PMID: 28127804 DOI: 10.1111/mmi.13630] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/21/2017] [Indexed: 12/30/2022]
Abstract
Manganese (Mn) is an essential micronutrient and required cofactor in bacteria. Despite its importance, excess Mn can impair bacterial growth, the mechanism of which remains largely unexplored. Here, we show that proper Mn homeostasis is critical for cellular growth of the major human respiratory pathogen Streptococcus pneumoniae. Perturbations in Mn homeostasis genes, psaBCA, encoding the Mn importer, and mntE, encoding the Mn exporter, lead to Mn sensitivity during aerobiosis. Mn-stressed cells accumulate iron and copper, in addition to Mn. Impaired growth is a direct result of Mn toxicity and does not result from iron-mediated Fenton chemistry, since cells remain sensitive to Mn during anaerobiosis or when hydrogen peroxide biogenesis is significantly reduced. Mn-stressed cells are significantly elongated, whereas Mn-limitation imposed by zinc addition leads to cell shortening. We show that Mn accumulation promotes aberrant dephosphorylation of cell division proteins via hyperactivation of the Mn-dependent protein phosphatase PhpP, a key enzyme involved in the regulation of cell division. We discuss a mechanism by which cellular Mn:Zn ratios dictate PhpP specific activity thereby regulating pneumococcal cell division. We propose that Mn-metalloenzymes are particularly susceptible to hyperactivation or mismetallation, suggesting the need for exquisite cellular control of Mn-dependent metabolic processes.
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Affiliation(s)
- Julia E Martin
- Department of Chemistry, Indiana University, Bloomington, IN, 47405-7102, USA
| | - John P Lisher
- Department of Chemistry, Indiana University, Bloomington, IN, 47405-7102, USA.,Graduate Program in Biochemistry Indiana University, Bloomington, IN, 47405, USA
| | - Malcolm E Winkler
- Department of Biology, Indiana University, Bloomington, IN, 47405, USA.,Department of Molecular and Cellular Biochemistry, Indiana University, Bloomington, IN, 47405, USA
| | - David P Giedroc
- Department of Chemistry, Indiana University, Bloomington, IN, 47405-7102, USA.,Department of Molecular and Cellular Biochemistry, Indiana University, Bloomington, IN, 47405, USA
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19
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Ibrahim MY, Hashim NM, Dhiyaaldeen SM, Al-Obaidi MMJ, El-Ferjani RM, Adam H, Alkotaini B, Batran RA, Ali HM. Acute Toxicity and Gastroprotection Studies of a New Schiff Base Derived Manganese (II) Complex against HCl/Ethanol-Induced Gastric Ulcerations in Rats. Sci Rep 2016; 6:26819. [PMID: 27229938 PMCID: PMC4882520 DOI: 10.1038/srep26819] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 05/10/2016] [Indexed: 02/07/2023] Open
Abstract
Manganese is a crucial element for health. In this study, the gastroprotective efficacy of Mn (II) complex (MDLA) against acidified ethanol (HCl/Ethanol)-induced gastric ulceration in rats was evaluated. The animals were distributed into 5 groups. Groups 1 and 2 received carboxymethylcellulose (CMC), group 3 was pretreated with omeprazole, and groups 4 and 5 were given 10 and 20 mg/kg of MDLA, respectively. After one hour, CMC and HCl/Ethanol were given to groups 2–5 whilst the animals in group 1 were ingested with CMC. After sacrifice, gastric lesions were evaluated by wall mucus, gross appearance, histology, antioxidant enzymes and immunohistochemistry. Group 2 displayed severe gastric damage with a significant reduction in wall mucus. Conversely, gastric lesions were reduced in groups 3–5 by 85.72%, 56.51% and 65.93%, respectively. The rats in groups 3–5 showed up-regulation of heat shock protein 70 (Hsp70) with down-regulation of Bcl-2-associated protein x (Bax). Pretreatment with omeprazole or MDLA led to an increase in the uptake of Periodic Acid Schiff (PAS) stain in the glandular part of the gastric tissue, raised levels of prostaglandin E2 (PGE2) and superoxide dismutase (SOD), and a reduction in malondialdehyde (MDA) concentrations. These results suggested the gastroprotective action of Mn (II) complex.
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Affiliation(s)
- Mohamed Yousif Ibrahim
- Department of Pharmacy, Faculty of Medicine, University of Malaya 50603 Kuala Lumpur, Malaysia.,Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Najihah Mohd Hashim
- Department of Pharmacy, Faculty of Medicine, University of Malaya 50603 Kuala Lumpur, Malaysia.,Center for Natural Products and Drug Discovery (CENAR), University of Malaya, Kuala Lumpur, Malaysia
| | - Summaya M Dhiyaaldeen
- Department of Microbiology, Faculty of medicine, University of Duhok, 78 Kurdistan, Iraq
| | - Mazen M Jamil Al-Obaidi
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Rashd M El-Ferjani
- Department of Chemistry, Faculty of Science, University of Benghazi, 1308 Benghazi, Libya
| | - Hoyam Adam
- School of Pharmacy, Ahfad University for Women (AUW), 167 Omdurman, Sudan
| | - Bassam Alkotaini
- Department of Chemical Engineering, Faculty of Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Rami Al Batran
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.,Institute of Research Management &Monitoring, Deputy Vice Chancellor (Research &Innovation), University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Hapipah Mohd Ali
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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20
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He C, Hart PC, Germain D, Bonini MG. SOD2 and the Mitochondrial UPR: Partners Regulating Cellular Phenotypic Transitions. Trends Biochem Sci 2016; 41:568-577. [PMID: 27180143 DOI: 10.1016/j.tibs.2016.04.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 04/05/2016] [Accepted: 04/15/2016] [Indexed: 12/13/2022]
Abstract
ATP and reactive oxygen species (ROS) are signaling molecules that control cellular function and phenotype. Mitochondria produce both ATP and ROS. Since the electrons needed to generate either ATP or ROS originate from NADH/FADH2, the mechanism through which electrons flow towards oxygen determines yields and whether ATP or ROS prevails. Alterations in the electron flow impact cells dramatically, such as by supporting specialization (which requires high ATP) or imposing dedifferentiation. High ROS, facilitated by enzymes such as superoxide dismutase 2 (SOD2) that enhance mitochondrial hydrogen peroxide (mtH2O2), are normally linked to dedifferentiation of somatic cells. Here we propose that combined high mtH2O2 and mitochondrial unfolded protein response (UPR(mt)) activation are essential for somatic dedifferentiation programs and the acquisition of stem-like properties in reparative processes and disease.
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Affiliation(s)
- Chenxia He
- Department of Medicine, College of Medicine of the University of Illinois at Chicago, Chicago, IL 60612, USA; Department of Pharmacology, College of Medicine of the University of Illinois at Chicago, Chicago, IL 60612, USA; Department of Pathology, College of Medicine of the University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Peter C Hart
- Department of Medicine, College of Medicine of the University of Illinois at Chicago, Chicago, IL 60612, USA; Department of Pharmacology, College of Medicine of the University of Illinois at Chicago, Chicago, IL 60612, USA; Department of Pathology, College of Medicine of the University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Doris Germain
- Department of Medicine (Hematology and Medical Oncology), Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Marcelo G Bonini
- Department of Medicine, College of Medicine of the University of Illinois at Chicago, Chicago, IL 60612, USA; Department of Pharmacology, College of Medicine of the University of Illinois at Chicago, Chicago, IL 60612, USA; Department of Pathology, College of Medicine of the University of Illinois at Chicago, Chicago, IL 60612, USA.
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