1
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Palma FR, Coelho DR, Pulakanti K, Sakiyama MJ, Huang Y, Ogata FT, Danes JM, Meyer A, Furdui CM, Spitz DR, Gomes AP, Gantner BN, Rao S, Backman V, Bonini MG. Histone H3.1 is a chromatin-embedded redox sensor triggered by tumor cells developing adaptive phenotypic plasticity and multidrug resistance. Cell Rep 2024; 43:113897. [PMID: 38493478 DOI: 10.1016/j.celrep.2024.113897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 01/08/2024] [Accepted: 02/16/2024] [Indexed: 03/19/2024] Open
Abstract
Chromatin structure is regulated through posttranslational modifications of histone variants that modulate transcription. Although highly homologous, histone variants display unique amino acid sequences associated with specific functions. Abnormal incorporation of histone variants contributes to cancer initiation, therapy resistance, and metastasis. This study reports that, among its biologic functions, histone H3.1 serves as a chromatin redox sensor that is engaged by mitochondrial H2O2. In breast cancer cells, the oxidation of H3.1Cys96 promotes its eviction and replacement by H3.3 in specific promoters. We also report that this process facilitates the opening of silenced chromatin domains and transcriptional activation of epithelial-to-mesenchymal genes associated with cell plasticity. Scavenging nuclear H2O2 or amino acid substitution of H3.1(C96S) suppresses plasticity, restores sensitivity to chemotherapy, and induces remission of metastatic lesions. Hence, it appears that increased levels of H2O2 produced by mitochondria of breast cancer cells directly promote redox-regulated H3.1-dependent chromatin remodeling involved in chemoresistance and metastasis.
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Affiliation(s)
- Flavio R Palma
- Department of Medicine, Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Diego R Coelho
- Department of Medicine, Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Kirthi Pulakanti
- Versiti Blood Research Institute of Wisconsin, and Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA; Department of Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Marcelo J Sakiyama
- Department of Medicine, Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Yunping Huang
- Department of Medicine, Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Fernando T Ogata
- Department of Medicine, Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Jeanne M Danes
- Department of Medicine, Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Alison Meyer
- Versiti Blood Research Institute of Wisconsin, and Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA; Department of Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Cristina M Furdui
- Department of Internal Medicine, Section on Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
| | - Douglas R Spitz
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA 52245, USA
| | - Ana P Gomes
- Molecular Oncology Program, H. Lee Moffitt Cancer Center, Tampa, FL 33612, USA
| | - Benjamin N Gantner
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Sridhar Rao
- Versiti Blood Research Institute of Wisconsin, and Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA; Department of Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Vadim Backman
- Department of Biomedical Engineering, Northwestern University McCormick School of Engineering, Evanston, IL 60208, USA
| | - Marcelo G Bonini
- Department of Medicine, Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA; Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
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2
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Palma FR, Gantner BN, Sakiyama MJ, Kayzuka C, Shukla S, Lacchini R, Cunniff B, Bonini MG. ROS production by mitochondria: function or dysfunction? Oncogene 2024; 43:295-303. [PMID: 38081963 DOI: 10.1038/s41388-023-02907-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/01/2023] [Accepted: 11/21/2023] [Indexed: 01/31/2024]
Abstract
In eukaryotic cells, ATP generation is generally viewed as the primary function of mitochondria under normoxic conditions. Reactive oxygen species (ROS), in contrast, are regarded as the by-products of respiration, and are widely associated with dysfunction and disease. Important signaling functions have been demonstrated for mitochondrial ROS in recent years. Still, their chemical reactivity and capacity to elicit oxidative damage have reinforced the idea that ROS are the products of dysfunctional mitochondria that accumulate during disease. Several studies support a different model, however, by showing that: (1) limited oxygen availability results in mitochondria prioritizing ROS production over ATP, (2) ROS is an essential adaptive mitochondrial signal triggered by various important stressors, and (3) while mitochondria-independent ATP production can be easily engaged by most cells, there is no known replacement for ROS-driven redox signaling. Based on these observations and other evidence reviewed here, we highlight the role of ROS production as a major mitochondrial function involved in cellular adaptation and stress resistance. As such, we propose a rekindled view of ROS production as a primary mitochondrial function as essential to life as ATP production itself.
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Affiliation(s)
- Flavio R Palma
- Department of Medicine, Division of Hematology Oncology, Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Northwestern University, Chicago, IL, USA
| | - Benjamin N Gantner
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Marcelo J Sakiyama
- Department of Medicine, Division of Hematology Oncology, Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Northwestern University, Chicago, IL, USA
| | - Cezar Kayzuka
- Department of Pharmacology, Ribeirao Preto College of Nursing, University of Sao Paulo, Sao Paulo, Brazil
| | - Sanjeev Shukla
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Riccardo Lacchini
- Department of Psychiatric Nursing and Human Sciences, Ribeirao Preto College of Nursing, University of Sao Paulo, Sao Paulo, Brazil
| | - Brian Cunniff
- Department of Pathology and Laboratory Medicine, Larner School of Medicine, University of Vermont, Burlington, VT, USA
| | - Marcelo G Bonini
- Department of Medicine, Division of Hematology Oncology, Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Northwestern University, Chicago, IL, USA.
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3
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Morrell MA, Willis TR, Brown DR, O'Brian CA, Post SL, Woloschak GE, Bonini MG, Paunesku T, Popovic J, Manning TM, Henley C, Girotti J, Rogers R, Velásquez C, López J, Glenn J, Simon MA. Lessons learned in the practice of community-based participatory research with community partner collaboration in study design and implementation: the community scientist model. Cancer Causes Control 2023; 34:621-624. [PMID: 37081154 PMCID: PMC10259190 DOI: 10.1007/s10552-023-01699-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 04/08/2023] [Indexed: 04/22/2023]
Abstract
Engagement of community participation is an innovative driver of modern research. However, to benefit the communities being studied, it is imperative to continuously evaluate ethical considerations, the relationship dynamic between researchers and community members, and the responsiveness of research teams to the needs and preferences of communities. Northwestern University's Center for Health Equity Transformation founded a community scientist program in 2018 that implemented a study using the Community-Based Participatory Research (CBPR) model. This project is an ongoing study of heavy metal exposure by geographic location in Chicago. Community scientists from various backgrounds, communities, and organizations formed an advisory panel, partnering with the cancer research team. This commentary describes lessons learned in structuring meaningful community involvement and benefit in CBPR, with a focus on three lessons learned that relate to ethics, relationships, and responsiveness. Our findings lay new groundwork for iteratively shaping best practices in CBPR.
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Affiliation(s)
- Megan A Morrell
- Feinberg School of Medicine, Northwestern University, Center for Health Equity Transformation, Chicago, USA
| | - Tabitha R Willis
- Feinberg School of Medicine, Northwestern University, Center for Health Equity Transformation, Chicago, USA
| | - Denisha R Brown
- Feinberg School of Medicine, Northwestern University, Center for Health Equity Transformation, Chicago, USA
| | - Catherine A O'Brian
- Feinberg School of Medicine, Northwestern University, Center for Health Equity Transformation, Chicago, USA
| | - Sharon L Post
- Feinberg School of Medicine, Northwestern University, Center for Health Equity Transformation, Chicago, USA
| | - Gayle E Woloschak
- Feinberg School of Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
| | - Marcelo G Bonini
- Feinberg School of Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
| | - Tatjana Paunesku
- Feinberg School of Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
| | - Jelena Popovic
- Feinberg School of Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
| | - Tarneka M Manning
- Feinberg School of Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
| | | | - Jorge Girotti
- Department of Medical Education, University of Illinois Chicago College of Medicine, Chicago, USA
| | | | | | - José López
- Puerto Rican Cultural Center, Chicago, USA
| | - Joanne Glenn
- Women On Top of Their Game Foundation, Chicago, USA
| | - Melissa A Simon
- Feinberg School of Medicine, Northwestern University, Center for Health Equity Transformation, Chicago, USA.
- Feinberg School of Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, USA.
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4
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Coelho DR, Palma FR, Paviani V, LaFond KM, Huang Y, Wang D, Wray B, Rao S, Yue F, Bonini MG, Gantner BN. SOCS1 regulates a subset of NFκB-target genes through direct chromatin binding and defines macrophage functional phenotypes. iScience 2023; 26:106442. [PMID: 37020964 PMCID: PMC10068561 DOI: 10.1016/j.isci.2023.106442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/08/2021] [Accepted: 03/14/2023] [Indexed: 03/19/2023] Open
Abstract
Suppressor of cytokine signaling-1 (SOCS1) exerts control over inflammation by targeting p65 nuclear factor-κB (NF-κB) for degradation in addition to its canonical role regulating cytokine signaling. We report here that SOCS1 does not operate on all p65 targets equally, instead localizing to a select subset of pro-inflammatory genes. Promoter-specific interactions of SOCS1 and p65 determine the subset of genes activated by NF-κB during systemic inflammation, with profound consequences for cytokine responses, immune cell mobilization, and tissue injury. Nitric oxide synthase-1 (NOS1)-derived nitric oxide (NO) is required and sufficient for the displacement of SOCS1 from chromatin, permitting full inflammatory transcription. Single-cell transcriptomic analysis of NOS1-deficient animals led to detection of a regulatory macrophage subset that exerts potent suppression on inflammatory cytokine responses and tissue remodeling. These results provide the first example of a redox-sensitive, gene-specific mechanism for converting macrophages from regulating inflammation to cells licensed to promote aggressive and potentially injurious inflammation.
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Affiliation(s)
- Diego R. Coelho
- Department of Medicine/Division of Endocrinology and Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Department of Medicine/Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Flavio R. Palma
- Department of Medicine/Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Veronica Paviani
- Department of Medicine/Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Katy M. LaFond
- Department of Medicine/Division of Endocrinology and Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Yunping Huang
- Department of Medicine/Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Dongmei Wang
- Center for Cancer Genomics, Robert H. Lurie Comprehensive Cancer Center of Chicago and Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Brian Wray
- Quantitative Data Science Core, Northwestern University Feinberg School of Medicine, and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Sridhar Rao
- Versiti Blood Research Institute and Department of Pediatrics/Division of Hematology, Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Feng Yue
- Center for Cancer Genomics, Robert H. Lurie Comprehensive Cancer Center of Chicago and Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Marcelo G. Bonini
- Department of Medicine/Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, Chicago, IL 60611, USA
| | - Benjamin N. Gantner
- Department of Medicine/Division of Endocrinology and Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA
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5
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Bollu L, Bommi PV, Monsen PJ, Zhai L, Lauing KL, Bell A, Kim M, Ladomersky E, Yang X, Platanias LC, Matei DE, Bonini MG, Munshi HG, Hashizume R, Wu JD, Zhang B, James CD, Chen P, Kocherginsky M, Horbinski C, Cameron MD, Grigorescu AA, Yamini B, Lukas RV, Schiltz GE, Wainwright DA. Identification and Characterization of a Novel Indoleamine 2,3-Dioxygenase 1 Protein Degrader for Glioblastoma. J Med Chem 2022; 65:15642-15662. [PMID: 36410047 PMCID: PMC9743093 DOI: 10.1021/acs.jmedchem.2c00771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Indexed: 11/22/2022]
Abstract
Indoleamine 2,3-dioxygenase 1 (IDO1) is a potent immunosuppressive enzyme that inhibits the antitumor immune response through both tryptophan metabolism and non-enzymatic functions. To date, most IDO1-targeted approaches have focused on inhibiting tryptophan metabolism. However, this class of drugs has failed to improve the overall survival of patients with cancer. Here, we developed and characterized proteolysis targeting chimeras (PROTACs) that degrade the IDO1 protein. IDO1-PROTACs were tested for their effects on IDO1 enzyme and non-enzyme activities. After screening a library of IDO1-PROTAC derivatives, a compound was identified that potently degraded the IDO1 protein through cereblon-mediated proteasomal degradation. The IDO1-PROTAC: (i) inhibited IDO1 enzyme activity and IDO1-mediated NF-κB phosphorylation in cultured human glioblastoma (GBM) cells, (ii) degraded the IDO1 protein within intracranial brain tumors in vivo, and (iii) mediated a survival benefit in mice with well-established brain tumors. This study identified and characterized a new IDO1 protein degrader with therapeutic potential for patients with glioblastoma.
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Affiliation(s)
- Lakshmi
R. Bollu
- Department
of Neurological Surgery, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Prashant V. Bommi
- Department
of Neurological Surgery, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Paige J. Monsen
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Lijie Zhai
- Department
of Neurological Surgery, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Kristen L. Lauing
- Department
of Neurological Surgery, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - April Bell
- Department
of Neurological Surgery, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Miri Kim
- Department
of Neurological Surgery, Loyola University
Medical Center, Maywood, Illinois 60153, United
States
| | - Erik Ladomersky
- Department
of Neurological Surgery, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Xinyu Yang
- WuXi
AppTec, Shanghai 200131, People’s Republic of China
| | - Leonidas C. Platanias
- Department
of Medicine—Division of Hematology and Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, United States
- Robert
H.
Lurie Comprehensive Cancer Center, Chicago, Illinois 60611, United States
| | - Daniela E. Matei
- Robert
H.
Lurie Comprehensive Cancer Center, Chicago, Illinois 60611, United States
- Department
of Obstetrics and Gynecology, Northwestern
University Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Marcelo G. Bonini
- Department
of Medicine—Division of Hematology and Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, United States
- Robert
H.
Lurie Comprehensive Cancer Center, Chicago, Illinois 60611, United States
| | - Hidayatullah G. Munshi
- Department
of Medicine—Division of Hematology and Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, United States
- Robert
H.
Lurie Comprehensive Cancer Center, Chicago, Illinois 60611, United States
| | - Rintaro Hashizume
- Robert
H.
Lurie Comprehensive Cancer Center, Chicago, Illinois 60611, United States
- Department
of Pediatrics − Division of Hematology, Oncology, and Stem
Cell Transplantation, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Jennifer D. Wu
- Robert
H.
Lurie Comprehensive Cancer Center, Chicago, Illinois 60611, United States
- Department
of Urology, Northwestern University Feinberg
School of Medicine, Chicago, Illinois 60611, United States
- Department
of Microbiology-Immunology, Northwestern
University Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Bin Zhang
- Department
of Medicine—Division of Hematology and Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, United States
- Department
of Microbiology-Immunology, Northwestern
University Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Charles David James
- Department
of Neurological Surgery, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Peiwen Chen
- Department
of Neurological Surgery, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Masha Kocherginsky
- Robert
H.
Lurie Comprehensive Cancer Center, Chicago, Illinois 60611, United States
- Department
of Obstetrics and Gynecology, Northwestern
University Feinberg School of Medicine, Chicago, Illinois 60611, United States
- Department of Preventive Medicine, Northwestern
University Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Craig Horbinski
- Department
of Neurological Surgery, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
- Robert
H.
Lurie Comprehensive Cancer Center, Chicago, Illinois 60611, United States
- Department of Pathology, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Michael D. Cameron
- Department of Molecular Therapeutics, The
Scripps Research Institute, Scripps Florida, Jupiter, Florida 33458, United States
| | - Arabela A. Grigorescu
- Department of Molecular Biosciences, Northwestern
University Weinberg College of Arts and Sciences, Evanston, Illinois 60208, United States
| | - Bakhtiar Yamini
- Department of Neurological Surgery, Division of the Biological Sciences, The University of Chicago, Chicago, Illinois 60637, United States
| | - Rimas V. Lukas
- Robert
H.
Lurie Comprehensive Cancer Center, Chicago, Illinois 60611, United States
- Department
of Neurology, Northwestern University Feinberg
School of Medicine, Chicago, Illinois 60611, United States
| | - Gary E. Schiltz
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Robert
H.
Lurie Comprehensive Cancer Center, Chicago, Illinois 60611, United States
- Department of Pharmacology, Northwestern
University Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Derek A. Wainwright
- Department
of Neurological Surgery, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
- Department
of Medicine—Division of Hematology and Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, United States
- Robert
H.
Lurie Comprehensive Cancer Center, Chicago, Illinois 60611, United States
- Department
of Microbiology-Immunology, Northwestern
University Feinberg School of Medicine, Chicago, Illinois 60611, United States
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6
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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7
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Jiang Y, Krantz S, Qin X, Li S, Gunasekara H, Kim YM, Zimnicka A, Bae M, Ma K, Toth PT, Hu Y, Shajahan-Haq AN, Patel HH, Gentile S, Bonini MG, Rehman J, Liu Y, Minshall RD. Caveolin-1 controls mitochondrial damage and ROS production by regulating fission - fusion dynamics and mitophagy. Redox Biol 2022; 52:102304. [PMID: 35413643 PMCID: PMC9018165 DOI: 10.1016/j.redox.2022.102304] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/23/2022] [Indexed: 12/22/2022] Open
Abstract
As essential regulators of mitochondrial quality control, mitochondrial dynamics and mitophagy play key roles in maintenance of metabolic health and cellular homeostasis. Here we show that knockdown of the membrane-inserted scaffolding and structural protein caveolin-1 (Cav-1) and expression of tyrosine 14 phospho-defective Cav-1 mutant (Y14F), as opposed to phospho-mimicking Y14D, altered mitochondrial morphology, and increased mitochondrial matrix mixing, mitochondrial fusion and fission dynamics as well as mitophagy in MDA-MB-231 triple negative breast cancer cells. Further, we found that interaction of Cav-1 with mitochondrial fusion/fission machinery Mitofusin 2 (Mfn2) and Dynamin related protein 1 (Drp1) was enhanced by Y14D mutant indicating Cav-1 Y14 phosphorylation prevented Mfn2 and Drp1 translocation to mitochondria. Moreover, limiting mitochondrial recruitment of Mfn2 diminished formation of the PINK1/Mfn2/Parkin complex required for initiation of mitophagy resulting in accumulation of damaged mitochondria and ROS (mtROS). Thus, these studies indicate that phospho-Cav-1 may be an important switch mechanism in cancer cell survival which could lead to novel strategies for complementing cancer therapies.
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Affiliation(s)
- Ying Jiang
- Departments of Pharmacology, University of Illinois at Chicago, Chicago, IL, 60612, USA,Center for Informational Biology, University of Electronic Science and Technology of China, 610054, China
| | - Sarah Krantz
- Departments of Pharmacology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Xiang Qin
- Center for Informational Biology, University of Electronic Science and Technology of China, 610054, China
| | - Shun Li
- Center for Informational Biology, University of Electronic Science and Technology of China, 610054, China
| | | | - Young-Mee Kim
- Departments of Pharmacology, University of Illinois at Chicago, Chicago, IL, 60612, USA,University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Adriana Zimnicka
- Departments of Pharmacology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Misuk Bae
- Anesthesiology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Ke Ma
- Research Resources Center, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Peter T. Toth
- Departments of Pharmacology, University of Illinois at Chicago, Chicago, IL, 60612, USA,Research Resources Center, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Ying Hu
- Chemistry, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Ayesha N. Shajahan-Haq
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, 20057, USA
| | - Hemal H. Patel
- VA San Diego Health System and Department of Anesthesiology, University of California at San Diego, San Diego, CA, 92161, USA
| | - Saverio Gentile
- Medicine, University of Illinois at Chicago, Chicago, IL, 60612, USA,University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Marcelo G. Bonini
- Department of Medicine, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL, 60614, USA
| | - Jalees Rehman
- Departments of Pharmacology, University of Illinois at Chicago, Chicago, IL, 60612, USA,Medicine, University of Illinois at Chicago, Chicago, IL, 60612, USA,University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Yiyao Liu
- Center for Informational Biology, University of Electronic Science and Technology of China, 610054, China
| | - Richard D. Minshall
- Departments of Pharmacology, University of Illinois at Chicago, Chicago, IL, 60612, USA,Anesthesiology, University of Illinois at Chicago, Chicago, IL, 60612, USA,University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, IL, 60612, USA,Corresponding author. Departments of Anesthesiology and Pharmacology, University of Illinois at Chicago, Chicago, IL, 60612, USA.
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8
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Danes JM, Palma FR, Bonini MG. Arsenic and other metals as phenotype driving electrophiles in carcinogenesis. Semin Cancer Biol 2021; 76:287-291. [PMID: 34563651 DOI: 10.1016/j.semcancer.2021.09.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 09/20/2021] [Accepted: 09/21/2021] [Indexed: 12/17/2022]
Abstract
There are several sources of heavy metal exposures whether occupational or environmental. These are connected both with the existence of natural reservoirs of metal toxicants or human activity such as mining, welding and construction. In general, exposure to heavy metals, such as cadmium (Cd), mercury (Hg), nickel (Ni), lead (Pb) and metalloids, such as arsenic (As), has been associated with diseases including neurodegenerative diseases, diabetes and cancer. Common to these diseases is the loss of cellular physiologic performance and phenotype required for proper function. On the metal side, electrophilic behavior that disrupts the electronic (or redox) state of cells is a common feature. This suggests that there may be a connection between changes to the redox equilibrium of cells caused by environmental exposures to heavy metals and the pathogenic effects of such exposures. In this mini-review, we will focus on two environmental contaminants cadmium (a metal) and arsenic (a metalloid) and explore their interactions with living organisms from the perspective of their electrophilic chemical reactivity that underlies both their potential as carcinogens and as drivers of more aggressive tumor phenotypes.
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Affiliation(s)
- Jeanne M Danes
- Department of Medicine, Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, United States
| | - Flavio R Palma
- Department of Medicine, Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, United States
| | - Marcelo G Bonini
- Department of Medicine, Division of Hematology Oncology, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Chicago, United States.
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9
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Palma FR, Ratti BA, Paviani V, Coelho DR, Miguel R, Danes JM, Zaichik SV, de Abreu AL, Silva SO, Chen Y, Silverstein RL, Karan U, Jones DP, Bonini MG. AMPK-deficiency forces metformin-challenged cancer cells to switch from carbohydrate metabolism to ketogenesis to support energy metabolism. Oncogene 2021; 40:5455-5467. [PMID: 34290400 PMCID: PMC8669831 DOI: 10.1038/s41388-021-01943-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 06/21/2021] [Accepted: 07/05/2021] [Indexed: 02/07/2023]
Abstract
Epidemiologic studies in diabetic patients as well as research in model organisms have indicated the potential of metformin as a drug candidate for the treatment of various types of cancer, including breast cancer. To date most of the anti-cancer properties of metformin have, in large part, been attributed either to the inhibition of mitochondrial NADH oxidase complex (Complex I in the electron transport chain) or the activation of AMP-activated kinase (AMPK). However, it is becoming increasingly clear that AMPK activation may be critical to alleviate metabolic and energetic stresses associated with tumor progression suggesting that it may, in fact, attenuate the toxicity of metformin instead of promoting it. Here, we demonstrate that AMPK opposes the detrimental effects of mitochondrial complex I inhibition by enhancing glycolysis at the expense of, and in a manner dependent on, pyruvate availability. We also found that metformin forces cells to rewire their metabolic grid in a manner that depends on AMPK, with AMPK-competent cells upregulating glycolysis and AMPK-deficient cell resorting to ketogenesis. In fact, while the killing effects of metformin were largely rescued by pyruvate in AMPKcompetent cells, AMPK-deficient cells required instead acetoacetate, a product of fatty acid catabolism indicating a switch from sugar to fatty acid metabolism as a central resource for ATP production in these cells. In summary, our results indicate that AMPK activation is not responsible for metformin anticancer activity and may instead alleviate energetic stress by activating glycolysis.
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Affiliation(s)
- Flavio R. Palma
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Medicine and Biophysics, Medical College of Wisconsin, Milwaukee, WI, 53226
| | - Bianca A. Ratti
- Universidade Estadual de Maringa, Avenida Colombo, 5790, CEP 87020-900, Maringa, PR, Brazil
| | - Veronica Paviani
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Medicine and Biophysics, Medical College of Wisconsin, Milwaukee, WI, 53226
| | - Diego R. Coelho
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Medicine and Biophysics, Medical College of Wisconsin, Milwaukee, WI, 53226
| | - Rodrigo Miguel
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611
| | - Jeanne M. Danes
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Medicine and Biophysics, Medical College of Wisconsin, Milwaukee, WI, 53226
| | - Sofia V. Zaichik
- Department of Medicine, University of Illinois at Chicago. 909 S. Wolcott Avenue, COMRB 1131, Chicago, IL, 60612
| | - Andre L. de Abreu
- Universidade Estadual de Maringa, Avenida Colombo, 5790, CEP 87020-900, Maringa, PR, Brazil,Department of Medicine, University of Illinois at Chicago. 909 S. Wolcott Avenue, COMRB 1131, Chicago, IL, 60612
| | - Sueli O. Silva
- Universidade Estadual de Maringa, Avenida Colombo, 5790, CEP 87020-900, Maringa, PR, Brazil
| | - Yiliang Chen
- Department of Medicine and Biophysics, Medical College of Wisconsin, Milwaukee, WI, 53226,Blood Research Institute, Versiti, Milwaukee, WI, 53226
| | - Roy L. Silverstein
- Department of Medicine and Biophysics, Medical College of Wisconsin, Milwaukee, WI, 53226,Blood Research Institute, Versiti, Milwaukee, WI, 53226
| | - Uppal Karan
- Department of Medicine, Emory University School of Medicine, 615 Michael Street NE, Atlanta, GA, 30322
| | - Dean P. Jones
- Department of Medicine, Emory University School of Medicine, 615 Michael Street NE, Atlanta, GA, 30322
| | - Marcelo G. Bonini
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Medicine and Biophysics, Medical College of Wisconsin, Milwaukee, WI, 53226
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10
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Danes JM, de Abreu ALP, Kerketta R, Huang Y, Palma FR, Gantner BN, Mathison AJ, Urrutia RA, Bonini MG. Inorganic arsenic promotes luminal to basal transition and metastasis of breast cancer. FASEB J 2020; 34:16034-16048. [PMID: 33047385 DOI: 10.1096/fj.202001192r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 12/18/2022]
Abstract
Inorganic arsenic (iAs/As2 O3 2- ) is an environmental toxicant found in watersheds around the world including in densely populated areas. iAs is a class I carcinogen known to target the skin, lungs, bladder, and digestive organs, but its role as a primary breast carcinogen remains controversial. Here, we examined a different possibility: that exposure to iAs promotes the transition of well-differentiated epithelial breast cancer cells characterized by estrogen and progesterone receptor expression (ER+/PR+), to more basal phenotypes characterized by active proliferation, and propensity to metastasis in vivo. Our results indicate two clear phenotypic responses to low-level iAs that depend on the duration of the exposure. Short-term pulses of iAs activate ER signaling, consistent with its reported pseudo-estrogen activity, but longer-term, chronic treatments for over 6 months suppresses both ER and PR expression and signaling. In fact, washout of these chronically exposed cells for up to 1 month failed to fully reverse the transcriptional and phenotypic effects of prolonged treatments, indicating durable changes in cellular physiologic identity. RNA-seq studies found that chronic iAs drives the transition toward more basal phenotypes characterized by impaired hormone receptor signaling despite the conservation of estrogen receptor expression. Because treatments for breast cancer patients are largely designed based on the detection of hormone receptor expression, our results suggest greater scrutiny of ER+ cancers in patients exposed to iAs, because these tumors may spawn more aggressive phenotypes than unexposed ER+ tumors, in particular, basal subtypes that tend to develop therapy resistance and metastasis.
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Affiliation(s)
- Jeanne M Danes
- Division of Hematology Oncology, Department of Medicine, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Andre L P de Abreu
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Romica Kerketta
- Genomic Sciences and Precision Medicine Center (GSPMC), Department of Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Yunping Huang
- Division of Hematology Oncology, Department of Medicine, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Flavio R Palma
- Division of Hematology Oncology, Department of Medicine, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Benjamin N Gantner
- Department of Medicine, Division of Endocrinology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Angela J Mathison
- Genomic Sciences and Precision Medicine Center (GSPMC), Department of Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Raul A Urrutia
- Genomic Sciences and Precision Medicine Center (GSPMC), Department of Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Marcelo G Bonini
- Division of Hematology Oncology, Department of Medicine, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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11
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Bonds JA, Shetti A, Stephen TKL, Bonini MG, Minshall RD, Lazarov O. Deficits in hippocampal neurogenesis in obesity-dependent and -independent type-2 diabetes mellitus mouse models. Sci Rep 2020; 10:16368. [PMID: 33004912 PMCID: PMC7530538 DOI: 10.1038/s41598-020-73401-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 09/16/2020] [Indexed: 12/27/2022] Open
Abstract
Hippocampal neurogenesis plays an important role in learning and memory function throughout life. Declines in this process have been observed in both aging and Alzheimer’s disease (AD). Type 2 Diabetes mellitus (T2DM) is a disorder characterized by insulin resistance and impaired glucose metabolism. T2DM often results in cognitive decline in adults, and significantly increases the risk of AD development. The pathways underlying T2DM-induced cognitive deficits are not known. Some studies suggest that alterations in hippocampal neurogenesis may contribute to cognitive deterioration, however, the fate of neurogenesis in these studies is highly controversial. To address this problem, we utilized two models of T2DM: (1) obesity-independent MKR transgenic mice expressing a mutated form of the human insulin-like growth factor 1 receptor (IGF-1R) in skeletal muscle, and (2) Obesity-dependent db/db mice harboring a mutation in the leptin receptor. Our results show that both models of T2DM display compromised hippocampal neurogenesis. We show that the number of new neurons in the hippocampus of these mice is reduced. Clone formation capacity of neural progenitor cells isolated from the db/db mice is deficient. Expression of insulin receptor and epidermal growth factor receptor was reduced in hippocampal neurospheres isolated from db/db mice. Results from this study warrant further investigation into the mechanisms underlying decreased neurogenesis in T2DM and its link to the cognitive decline observed in this disorder.
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Affiliation(s)
- Jacqueline A Bonds
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, 578 CME (M/C 512), 808 South Wood Street, Chicago, IL, 60612, USA
| | - Aashutosh Shetti
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, 578 CME (M/C 512), 808 South Wood Street, Chicago, IL, 60612, USA
| | - Terilyn K L Stephen
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, 578 CME (M/C 512), 808 South Wood Street, Chicago, IL, 60612, USA
| | - Marcelo G Bonini
- Division of Hematology/Oncology, Department of Medicine, Feinberg School of Medicine and The Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine of Northwestern University, Chicago, IL, 60612, USA
| | - Richard D Minshall
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL, 60612, USA.,Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Orly Lazarov
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, 578 CME (M/C 512), 808 South Wood Street, Chicago, IL, 60612, USA.
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12
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Lazarov O, Minshall RD, Bonini MG. Harnessing neurogenesis in the adult brain-A role in type 2 diabetes mellitus and Alzheimer's disease. Int Rev Neurobiol 2020; 155:235-269. [PMID: 32854856 DOI: 10.1016/bs.irn.2020.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Some metabolic disorders, such as type 2 diabetes mellitus (T2DM) are risk factors for the development of cognitive deficits and Alzheimer's disease (AD). Epidemiological studies suggest that in people with T2DM, the risk of developing dementia is 2.5 times higher than that in the non-diabetic population. The signaling pathways that underlie the increased risk and facilitate cognitive deficits are not fully understood. In fact, the cause of memory deficits in AD is not fully elucidated. The dentate gyrus of the hippocampus plays an important role in memory formation. Hippocampal neurogenesis is the generation of new neurons and glia in the adult brain throughout life. New neurons incorporate in the granular cell layer of the dentate gyrus and play a role in learning and memory and hippocampal plasticity. A large body of studies suggests that hippocampal neurogenesis is impaired in mouse models of AD and T2DM. Recent evidence shows that hippocampal neurogenesis is also impaired in human patients exhibiting mild cognitive impairment or AD. This review discusses the role of hippocampal neurogenesis in the development of cognitive deficits and AD, and considers inflammatory and endothelial signaling pathways in T2DM that may compromise hippocampal neurogenesis and cognitive function, leading to AD.
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Affiliation(s)
- Orly Lazarov
- Department of Anatomy and Cell Biology, The University of Illinois at Chicago, Chicago, IL, United States.
| | - Richard D Minshall
- Department of Pharmacology, The University of Illinois at Chicago, Chicago, IL, United States; Department of Anesthesiology, The University of Illinois at Chicago, Chicago, IL, United States
| | - Marcelo G Bonini
- Department of Medicine (Hematology/Oncology), Feinberg School of Medicine of Northwestern University and Basic Sciences Research, Robert H. Lurie Comprehensive Cancer Centre, Chicago, IL, United States
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13
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McCauley MD, Hong L, Sridhar A, Menon A, Perike S, Zhang M, da Silva IB, Yan J, Bonini MG, Ai X, Rehman J, Darbar D. Ion Channel and Structural Remodeling in Obesity-Mediated Atrial Fibrillation. Circ Arrhythm Electrophysiol 2020; 13:e008296. [PMID: 32654503 PMCID: PMC7935016 DOI: 10.1161/circep.120.008296] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Epidemiological studies have established obesity as an independent risk factor for atrial fibrillation (AF), but the underlying pathophysiological mechanisms remain unclear. Reduced cardiac sodium channel expression is a known causal mechanism in AF. We hypothesized that obesity decreases Nav1.5 expression via enhanced oxidative stress, thus reducing INa, and enhancing susceptibility to AF. METHODS To elucidate the underlying electrophysiological mechanisms a diet-induced obese mouse model was used. Weight, blood pressure, glucose, F2-isoprostanes, NOX2 (NADPH oxidase 2), and PKC (protein kinase C) were measured in obese mice and compared with lean controls. Invasive electrophysiological, immunohistochemistry, Western blotting, and patch clamping of membrane potentials was performed to evaluate the molecular and electrophysiological phenotype of atrial myocytes. RESULTS Pacing-induced AF in 100% of diet-induced obese mice versus 25% in controls (P<0.01) with increased AF burden. Cardiac sodium channel expression, INa and atrial action potential duration were reduced and potassium channel expression (Kv1.5) and current (IKur) and F2-isoprostanes, NOX2, and PKC-α/δ expression and atrial fibrosis were significantly increased in diet-induced obese mice as compared with controls. A mitochondrial antioxidant reduced AF burden, restored INa, ICa,L, IKur, action potential duration, and reversed atrial fibrosis in diet-induced obese mice as compared with controls. CONCLUSIONS Inducible AF in obese mice is mediated, in part, by a combined effect of sodium, potassium, and calcium channel remodeling and atrial fibrosis. Mitochondrial antioxidant therapy abrogated the ion channel and structural remodeling and reversed the obesity-induced AF burden. Our findings have important implications for the management of obesity-mediated AF in patients. Graphic Abstract: A graphic abstract is available for this article.
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Affiliation(s)
- Mark D. McCauley
- Department of Medicine, Rush University Medical Center
- Jesse Brown VA Medical Center, Rush University Medical Center
| | - Liang Hong
- Department of Medicine, Rush University Medical Center
| | | | - Ambili Menon
- Department of Medicine, Rush University Medical Center
| | | | - Meihong Zhang
- Department of Medicine, Rush University Medical Center
| | | | - JiaJie Yan
- Department of Physiology and Biophysics, Rush University Medical Center
| | | | - Xun Ai
- Department of Physiology and Biophysics, Rush University Medical Center
| | - Jalees Rehman
- Department of Medicine, Rush University Medical Center
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL
| | - Dawood Darbar
- Department of Medicine, Rush University Medical Center
- Jesse Brown VA Medical Center, Rush University Medical Center
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL
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14
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Abstract
Nitric oxide synthases are the major sources of nitric oxide, a critical signaling molecule involved in a wide range of cellular and physiological processes. These enzymes comprise a family of genes that are highly conserved across all eukaryotes. The three family members found in mammals are important for inter- and intra-cellular signaling in tissues that include the nervous system, the vasculature, the gut, skeletal muscle, and the immune system, among others. We summarize major advances in the understanding of biochemical and tissue-specific roles of nitric oxide synthases, with a focus on how these mechanisms enable tissue adaptation and health or dysfunction and disease. We highlight the unique mechanisms and processes of neuronal nitric oxide synthase, or NOS1. This was the first of these enzymes discovered in mammals, and yet much remains to be understood about this highly conserved and complex gene. We provide examples of two areas that will likely be of increasing importance in nitric oxide biology. These include the mechanisms by which these critical enzymes promote adaptation or disease by 1) coordinating communication by diverse cell types within a tissue and 2) directing cellular differentiation/activation decisions processes.
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Affiliation(s)
- Benjamin N Gantner
- Department of Medicine, Division of Endocrinology, Medical College of Wisconsin, USA.
| | - Katy M LaFond
- Department of Medicine, Division of Endocrinology, Medical College of Wisconsin, USA
| | - Marcelo G Bonini
- Department of Medicine, Division of Endocrinology, Medical College of Wisconsin, USA; Feinberg School of Medicine, Division of Hematology and Oncology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, USA
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15
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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: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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16
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Gerber TJ, Fehr VCO, Oliveira SDS, Hu G, Dull R, Bonini MG, Beck-Schimmer B, Minshall RD. Sevoflurane Promotes Bactericidal Properties of Macrophages through Enhanced Inducible Nitric Oxide Synthase Expression in Male Mice. Anesthesiology 2019; 131:1301-1315. [PMID: 31658116 PMCID: PMC6856440 DOI: 10.1097/aln.0000000000002992] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Sevoflurane with its antiinflammatory properties has shown to decrease mortality in animal models of sepsis. However, the underlying mechanism of its beneficial effect in this inflammatory scenario remains poorly understood. Macrophages play an important role in the early stage of sepsis as they are tasked with eliminating invading microbes and also attracting other immune cells by the release of proinflammatory cytokines such as interleukin-1β, interleukin-6, and tumor necrosis factor-α. Thus, the authors hypothesized that sevoflurane mitigates the proinflammatory response of macrophages, while maintaining their bactericidal properties. METHODS Murine bone marrow-derived macrophages were stimulated in vitro with lipopolysaccharide in the presence and absence of 2% sevoflurane. Expression of cytokines and inducible NO synthase as well as uptake of fluorescently labeled Escherichia coli (E. coli) were measured. The in vivo endotoxemia model consisted of an intraperitoneal lipopolysaccharide injection after anesthesia with either ketamine and xylazine or 4% sevoflurane. Male mice (n = 6 per group) were observed for a total of 20 h. During the last 30 min fluorescently labeled E. coli were intraperitoneally injected. Peritoneal cells were extracted by peritoneal lavage and inducible NO synthase expression as well as E. coli uptake by peritoneal macrophages was determined using flow cytometry. RESULTS In vitro, sevoflurane enhanced lipopolysaccharide-induced inducible NO synthase expression after 8 h by 466% and increased macrophage uptake of fluorescently labeled E. coli by 70% compared with vehicle-treated controls. Inhibiting inducible NO synthase expression pharmacologically abolished this increase in bacteria uptake. In vivo, inducible NO synthase expression was increased by 669% and phagocytosis of E. coli by 49% compared with the control group. CONCLUSIONS Sevoflurane enhances phagocytosis of bacteria by lipopolysaccharide-challenged macrophages in vitro and in vivo via an inducible NO synthase-dependent mechanism. Thus, sevoflurane potentiates bactericidal and antiinflammatory host-defense mechanisms in endotoxemia.
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Affiliation(s)
- Thomas J Gerber
- From the Departments Anesthesiology (T.J.G., V.C.O.F., S.D.S.O., G.H., R.D., B.B.-S., R.D.M.) Medicine (M.G.B.) Pharmacology (R.D.M.), University of Illinois at Chicago, Chicago, Illinois Institute of Anesthesiology (V.C.O.F., B.B.-S.) the Institute of Physiology and Zurich Center for Integrative Human Physiology (T.J.G., V.C.O.F., B.B.-S.), University of Zurich, Zurich, Switzerland
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17
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He C, Danes JM, Hart PC, Zhu Y, Huang Y, de Abreu AL, O'Brien J, Mathison AJ, Tang B, Frasor JM, Wakefield LM, Ganini D, Stauder E, Zielonka J, Gantner BN, Urrutia RA, Gius D, Bonini MG. SOD2 acetylation on lysine 68 promotes stem cell reprogramming in breast cancer. Proc Natl Acad Sci U S A 2019; 116:23534-23541. [PMID: 31591207 PMCID: PMC6876149 DOI: 10.1073/pnas.1902308116] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Mitochondrial superoxide dismutase (SOD2) suppresses tumor initiation but promotes invasion and dissemination of tumor cells at later stages of the disease. The mechanism of this functional switch remains poorly defined. Our results indicate that as SOD2 expression increases acetylation of lysine 68 ensues. Acetylated SOD2 promotes hypoxic signaling via increased mitochondrial reactive oxygen species (mtROS). mtROS, in turn, stabilize hypoxia-induced factor 2α (HIF2α), a transcription factor upstream of "stemness" genes such as Oct4, Sox2, and Nanog. In this sense, our findings indicate that SOD2K68Ac and mtROS are linked to stemness reprogramming in breast cancer cells via HIF2α signaling. Based on these findings we propose that, as tumors evolve, the accumulation of SOD2K68Ac turns on a mitochondrial pathway to stemness that depends on HIF2α and may be relevant for the progression of breast cancer toward poor outcomes.
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Affiliation(s)
- Chenxia He
- Department of Medicine, Division of Endocrinology, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Jeanne M Danes
- Department of Medicine, Division of Endocrinology, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Peter C Hart
- Department of Pathology, University of Illinois at Chicago, Chicago, IL 60612
| | - Yueming Zhu
- Department of Radiation Oncology, Northwestern University, Chicago, IL 60657
| | - Yunping Huang
- Department of Medicine, Division of Endocrinology, Medical College of Wisconsin, Milwaukee, WI 53226
| | | | - Joseph O'Brien
- Department of Radiation Oncology, Northwestern University, Chicago, IL 60657
| | - Angela J Mathison
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Binwu Tang
- Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892
| | - Jonna M Frasor
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL 60612
| | - Lalage M Wakefield
- Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892
| | - Douglas Ganini
- Free Radical Metabolism Group, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709
| | - Erich Stauder
- Department of Biophysics, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Jacek Zielonka
- Department of Biophysics, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Benjamin N Gantner
- Department of Medicine, Division of Endocrinology, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Raul A Urrutia
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI 53226
| | - David Gius
- Department of Radiation Oncology, Northwestern University, Chicago, IL 60657
| | - Marcelo G Bonini
- Department of Medicine, Division of Endocrinology, Medical College of Wisconsin, Milwaukee, WI 53226;
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18
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Bonds JA, Shetti A, Bheri A, Chen Z, Disouky A, Tai L, Mao M, Head BP, Bonini MG, Haus JM, Minshall RD, Lazarov O. Depletion of Caveolin-1 in Type 2 Diabetes Model Induces Alzheimer's Disease Pathology Precursors. J Neurosci 2019; 39:8576-8583. [PMID: 31527120 PMCID: PMC6807274 DOI: 10.1523/jneurosci.0730-19.2019] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 08/27/2019] [Accepted: 08/29/2019] [Indexed: 11/21/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a risk factor for the development of late-onset Alzheimer's disease (AD). However, the mechanism underlying the development of late-onset AD is largely unknown. Here we show that levels of the endothelial-enriched protein caveolin-1 (Cav-1) are reduced in the brains of T2DM patients compared with healthy aging, and inversely correlated with levels of β-amyloid (Aβ). Depletion of Cav-1 is recapitulated in the brains of db/db (Leprdb ) diabetic mice and corresponds with recognition memory deficits as well as the upregulation of amyloid precursor protein (APP), BACE-1, a trending increase in β-amyloid Aβ42/40 ratio and hyperphosphorylated tau (p-tau) species. Importantly, we show that restoration of Cav-1 levels in the brains of male db/db mice using adenovirus overexpressing Cav-1 (AAV-Cav-1) rescues learning and memory deficits and reduces pathology (i.e., APP, BACE-1 and p-tau levels). Knocking down Cav-1 using shRNA in HEK cells expressing the familial AD-linked APPswe mutant variant upregulates APP, APP carboxyl terminal fragments, and Aβ levels. In turn, rescue of Cav-1 levels restores APP metabolism. Together, these results suggest that Cav-1 regulates APP metabolism, and that depletion of Cav-1 in T2DM promotes the amyloidogenic processing of APP and hyperphosphorylation of tau. This may suggest that depletion of Cav-1 in T2DM underlies, at least in part, the development of AD and imply that restoration of Cav-1 may be a therapeutic target for diabetic-associated sporadic AD.SIGNIFICANCE STATEMENT More than 95% of the Alzheimer's patients have the sporadic late-onset form (LOAD). The cause for late-onset Alzheimer's disease is unknown. Patients with Type 2 diabetes mellitus have considerably higher incidence of cognitive decline and AD compared with the general population, suggesting a common mechanism. Here we show that the expression of caveolin-1 (Cav-1) is reduced in the brain in Type 2 diabetes mellitus. In turn, reduced Cav-1 levels induce AD-associated neuropathology and learning and memory deficits. Restoration of Cav-1 levels rescues these deficits. This study unravels signals underlying LOAD and suggests that restoration of Cav-1 may be an effective therapeutic target.
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Affiliation(s)
| | | | | | | | | | - Leon Tai
- Departments of Anatomy and Cell Biology
| | | | - Brian P Head
- Veteran Affairs San Diego Healthcare System, San Diego, California 92161
- Department of Anesthesiology, University of California at San Diego, San Diego, California 92103
| | - Marcelo G Bonini
- Departments of Medicine and Biophysics, Medical College of Wisconsin, Milwaukee, Wisconsin 53226
| | - Jacob M Haus
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan 48109
| | - Richard D Minshall
- Anesthesiology,
- Pharmacology, University of Illinois at Chicago, Chicago, Illinois 60612
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19
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Abstract
Cardio-oncology has emerged as an exciting new field at the intersection of cardiology and oncology. While improved oncology treatment efficacy has increased survival rates in cancer patients, the long-term cardiovascular consequences of this life-saving treatment have become more clinically relevant. Both traditional and newer (targeted) cancer therapies can have cardiovascular and metabolic sequelae, resulting in heart failure, coronary artery disease, myocarditis, pericardial disease, hypertension, and vascular and metabolic perturbations (Moslehi JJ. Cardiovascular toxic effects of targeted cancer therapies. N Engl J Med 375: 1457-1467, 2016). Both acute and chronic cardiovascular toxicities have proven challenging for clinicians and patients, significantly contributing to morbidity and mortality. Although chronic cardiovascular disease affects a growing number of cancer survivors (~17 million in the United States in 2019), cardiovascular toxicities associated with cancer and cancer therapies are poorly understood mechanistically. To balance potential damage to the cardiovascular system with effective and efficient cancer treatment, novel strategies are sorely needed. This perspective focuses on an assembly of articles that discuss novel means of counteracting adverse cardiovascular events in response to anticancer therapy. In light of new clinical syndromes in cardiology due to cancer therapies, we hope to highlight promising research opportunities offered by cardio-oncology (Bellinger AM, Arteaga CL, Force T, Humphreys BD, Demetri GD, Druker BJ, Moslehi JJ. Cardio-oncology: how new targeted cancer therapies and precision medicine can inform cardiovascular discovery. Circulation 132: 2248-2258, 2015.).
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Affiliation(s)
- Andreas M Beyer
- Department of Medicine, Medical College of Wisconsin , Milwaukee, Wisconsin.,Department of Physiology, Medical College of Wisconsin , Milwaukee, Wisconsin.,Redox Biology Program, Cardiovascular Center and Cancer Center, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Marcelo G Bonini
- Department of Medicine, Medical College of Wisconsin , Milwaukee, Wisconsin.,Department of Physiology, Medical College of Wisconsin , Milwaukee, Wisconsin.,Redox Biology Program, Cardiovascular Center and Cancer Center, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Javid Moslehi
- Cardio-Oncology Program, Department of Medicine, Vanderbilt University Medical Center , Nashville, Tennessee
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20
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Oliveira SDS, Chen J, Castellon M, Mao M, Raj JU, Comhair S, Erzurum S, Silva CLM, Machado RF, Bonini MG, Minshall RD. Injury-Induced Shedding of Extracellular Vesicles Depletes Endothelial Cells of Cav-1 (Caveolin-1) and Enables TGF-β (Transforming Growth Factor-β)-Dependent Pulmonary Arterial Hypertension. Arterioscler Thromb Vasc Biol 2019; 39:1191-1202. [PMID: 30943774 PMCID: PMC7297129 DOI: 10.1161/atvbaha.118.312038] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Objective- To determine whether pulmonary arterial hypertension is associated with endothelial cell (EC)-Cav-1 (caveolin-1) depletion, EC-derived extracellular vesicle cross talk with macrophages, and proliferation of Cav-1 depleted ECs via TGF-β (transforming growth factor-β) signaling. Approach and Results- Pulmonary vascular disease was induced in Sprague-Dawley rats by exposure to a single injection of VEGFRII (vascular endothelial growth factor receptor II) antagonist SU5416 (Su) followed by hypoxia (Hx) plus normoxia (4 weeks each-HxSu model) and in WT (wild type; Tie2.Cre-; Cav1 lox/lox) and EC- Cav1-/- (Tie2.Cre+; Cav1 fl/fl) mice (Hx: 4 weeks). We observed reduced lung Cav-1 expression in the HxSu rat model in association with increased Cav-1+ extracellular vesicle shedding into the circulation. Whereas WT mice exposed to hypoxia exhibited increased right ventricular systolic pressure and pulmonary microvascular thickening compared with the group maintained in normoxia, the remodeling was further increased in EC- Cav1-/- mice indicating EC Cav-1 expression protects against hypoxia-induced pulmonary hypertension. Depletion of EC Cav-1 was associated with reduced BMPRII (bone morphogenetic protein receptor II) expression, increased macrophage-dependent TGF-β production, and activation of pSMAD2/3 signaling in the lung. In vitro, in the absence of Cav-1, eNOS (endothelial NO synthase) dysfunction was implicated in the mechanism of EC phenotype switching. Finally, reduced expression of EC Cav-1 in lung histological sections from human pulmonary arterial hypertension donors was associated with increased plasma concentration of Cav-1, extracellular vesicles, and TGF-β, indicating Cav-1 may be a plasma biomarker of vascular injury and key determinant of TGF-β-induced pulmonary vascular remodeling. Conclusions- EC Cav-1 depletion occurs, in part, via Cav-1+ extracellular vesicle shedding into the circulation, which contributes to increased TGF-β signaling, EC proliferation, vascular remodeling, and pulmonary arterial hypertension.
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Affiliation(s)
- Suellen D S Oliveira
- From the Department of Anesthesiology (S.D.S.O., M.C., R.D.M.), University of Illinois at Chicago
| | - Jiwang Chen
- Department of Medicine (J.C., M.M., R.F.M., M.G.B.), University of Illinois at Chicago
- Research Resources Center Cardiovascular Research Core (J.C., M.C.), University of Illinois at Chicago
| | - Maricela Castellon
- From the Department of Anesthesiology (S.D.S.O., M.C., R.D.M.), University of Illinois at Chicago
- Research Resources Center Cardiovascular Research Core (J.C., M.C.), University of Illinois at Chicago
| | - Mao Mao
- Department of Medicine (J.C., M.M., R.F.M., M.G.B.), University of Illinois at Chicago
| | - J Usha Raj
- Department of Pediatrics (J.U.R.), University of Illinois at Chicago
| | - Suzy Comhair
- Lerner Research Institute (S.C., S.E.), Cleveland Clinic Foundation, OH
| | - Serpil Erzurum
- Lerner Research Institute (S.C., S.E.), Cleveland Clinic Foundation, OH
| | - Claudia L M Silva
- Institute of Biomedical Science, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil (C.L.M.S.)
| | - Roberto F Machado
- Department of Medicine (J.C., M.M., R.F.M., M.G.B.), University of Illinois at Chicago
| | - Marcelo G Bonini
- Department of Medicine (J.C., M.M., R.F.M., M.G.B.), University of Illinois at Chicago
| | - Richard D Minshall
- From the Department of Anesthesiology (S.D.S.O., M.C., R.D.M.), University of Illinois at Chicago
- Department of Pharmacology (R.D.M.), University of Illinois at Chicago
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21
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Lee J, Yesilkanal AE, Wynne JP, Frankenberger C, Liu J, Yan J, Elbaz M, Rabe DC, Rustandy FD, Tiwari P, Grossman EA, Hart PC, Kang C, Sanderson SM, Andrade J, Nomura DK, Bonini MG, Locasale JW, Rosner MR. Effective breast cancer combination therapy targeting BACH1 and mitochondrial metabolism. Nature 2019; 568:254-258. [PMID: 30842661 PMCID: PMC6698916 DOI: 10.1038/s41586-019-1005-x] [Citation(s) in RCA: 194] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 02/06/2019] [Indexed: 12/20/2022]
Abstract
Mitochondrial metabolism is an attractive target for cancer therapy1,2. Reprogramming metabolic pathways could improve the ability of metabolic inhibitors to suppress cancers with limited treatment options, such as triple-negative breast cancer (TNBC)1,3. Here we show that BTB and CNC homology1 (BACH1)4, a haem-binding transcription factor that is increased in expression in tumours from patients with TNBC, targets mitochondrial metabolism. BACH1 decreases glucose utilization in the tricarboxylic acid cycle and negatively regulates transcription of electron transport chain (ETC) genes. BACH1 depletion by shRNA or degradation by hemin sensitizes cells to ETC inhibitors such as metformin5,6, suppressing growth of both cell line and patient-derived tumour xenografts. Expression of a haem-resistant BACH1 mutant in cells that express a short hairpin RNA for BACH1 rescues the BACH1 phenotype and restores metformin resistance in hemin-treated cells and tumours7. Finally, BACH1 gene expression inversely correlates with ETC gene expression in tumours from patients with breast cancer and in other tumour types, which highlights the clinical relevance of our findings. This study demonstrates that mitochondrial metabolism can be exploited by targeting BACH1 to sensitize breast cancer and potentially other tumour tissues to mitochondrial inhibitors.
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Affiliation(s)
- Jiyoung Lee
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Ali E Yesilkanal
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Joseph P Wynne
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Casey Frankenberger
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Juan Liu
- Department of Pharmacology and Cancer Biology, Duke University, Durham, NC, USA
| | - Jielin Yan
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Mohamad Elbaz
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Daniel C Rabe
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Felicia D Rustandy
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Payal Tiwari
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Elizabeth A Grossman
- Department of Chemistry, Molecular and Cell Biology, and Nutritional Sciences and Toxicology, University of California at Berkeley, Berkeley, CA, USA.,Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA, USA.,Department of Nutritional Sciences and Toxicology, University of California at Berkeley, Berkeley, CA, USA
| | - Peter C Hart
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Christie Kang
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Sydney M Sanderson
- Department of Pharmacology and Cancer Biology, Duke University, Durham, NC, USA
| | - Jorge Andrade
- Center for Research Informatics, University of Chicago, Chicago, IL, USA
| | - Daniel K Nomura
- Department of Chemistry, Molecular and Cell Biology, and Nutritional Sciences and Toxicology, University of California at Berkeley, Berkeley, CA, USA.,Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA, USA.,Department of Nutritional Sciences and Toxicology, University of California at Berkeley, Berkeley, CA, USA
| | - Marcelo G Bonini
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Jason W Locasale
- Department of Pharmacology and Cancer Biology, Duke University, Durham, NC, USA
| | - Marsha Rich Rosner
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA.
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22
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Oliveira SDAS, Castellon M, Machado R, Bonini MG, Minshall R. Endothelial Caveolin‐1 Positive Microvesicles and Apoptotic Bodies as Early Biomarkers of Acute Lung Injury and Possible Mediators of TGF‐β‐mediated Repair/Remodeling. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.746.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Maricela Castellon
- Pharmacology and AnesthesiologyUniversity of Illinois at ChicagoChicagoIL
| | | | | | - Richard Minshall
- Pharmacology and AnesthesiologyUniversity of Illinois at ChicagoChicagoIL
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23
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Oliveira SDAS, Chen J, Castellon M, Chernaya O, Colamonici O, Bonini MG, Machado R, Minshall R. Endothelial Cell Caveolin‐1 Depletion Modulates TGF and Notch Signaling Associated with Pulmonary Arterial Hypertension. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.573.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Jiwang Chen
- MedicineUniversity of Illinois at ChicagoChicagoIL
| | - Maricela Castellon
- Pharmacology and AnesthesiologyUniversity of Illinois at ChicagoChicagoIL
| | - Olga Chernaya
- PharmacologyUniversity of Illinois at ChicagoChicagoIL
| | | | | | | | - Richard Minshall
- Pharmacology and AnesthesiologyUniversity of Illinois at ChicagoChicagoIL
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24
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Chen Z, D S Oliveira S, Zimnicka AM, Jiang Y, Sharma T, Chen S, Lazarov O, Bonini MG, Haus JM, Minshall RD. Reciprocal regulation of eNOS and caveolin-1 functions in endothelial cells. Mol Biol Cell 2018; 29:1190-1202. [PMID: 29563255 PMCID: PMC5935069 DOI: 10.1091/mbc.e17-01-0049] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
We hypothesized that the maintenance of vascular homeostasis is critically dependent on the expression and reciprocal regulation of caveolin-1 (Cav-1) and endothelial nitric oxide synthase (eNOS) in endothelial cells (ECs). Skeletal muscle biopsies from subjects with type 2 diabetes showed 50% less Cav-1 and eNOS than those from lean healthy controls. The Cav-1:eNOS expression ratio was 200:1 in primary culture human ECs. Cav-1 small interfering RNA (siRNA) reduced eNOS protein and gene expression in association with a twofold increase in eNOS phosphorylation and nitrate production per molecule of eNOS, which was reversed in cells overexpressing Adv-Cav-1-GFP. Upon addition of the Ca2+ ionophore A23187 to activate eNOS, we observed eNOS Ser1177 phosphorylation, its translocation to β-catenin-positive cell–cell junctions, and increased colocalization of eNOS and Cav-1 within 5 min. We also observed Cav-1 S-nitrosylation and destabilization of Cav-1 oligomers in cells treated with A23187 as well as insulin or albumin, and this could be blocked by L-NAME, PP2, or eNOS siRNA. Finally, caveola-mediated endocytosis of albumin or insulin was reduced by Cav-1 or eNOS siRNA, and the effect of Cav-1 siRNA was rescued by Adv-Cav-1-GFP. Thus, Cav-1 stabilizes eNOS expression and regulates its activity, whereas eNOS-derived NO promotes caveola-mediated endocytosis.
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Affiliation(s)
- Zhenlong Chen
- Departments of aAnesthesiology, University of Illinois at Chicago, Chicago, IL 60612
| | - Suellen D S Oliveira
- Departments of aAnesthesiology, University of Illinois at Chicago, Chicago, IL 60612
| | | | - Ying Jiang
- Departments of aAnesthesiology, University of Illinois at Chicago, Chicago, IL 60612
| | - Tiffany Sharma
- Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
| | - Stone Chen
- Whitney M. Young Magnet High School, Chicago, IL 60607
| | - Orly Lazarov
- Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, IL 60612
| | | | - Jacob M Haus
- Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL 60612
| | - Richard D Minshall
- Departments of aAnesthesiology, University of Illinois at Chicago, Chicago, IL 60612.,Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
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25
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Potje SR, Chen Z, Oliveira SDS, Bendhack LM, da Silva RS, Bonini MG, Antoniali C, Minshall RD. Nitric oxide donor [Ru(terpy)(bdq)NO] 3+ induces uncoupling and phosphorylation of endothelial nitric oxide synthase promoting oxidant production. Free Radic Biol Med 2017; 112:587-596. [PMID: 28899725 PMCID: PMC5647835 DOI: 10.1016/j.freeradbiomed.2017.09.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 09/05/2017] [Accepted: 09/06/2017] [Indexed: 02/07/2023]
Abstract
[Ru(terpy)(bdq)NO]3+ (TERPY) is a nitric oxide (NO) donor that promotes relaxation of the mesenteric artery and aorta in rats. We sought to investigate whether it acts as both an NO donor and endothelial NO synthase (eNOS) activator, as shown previously for nitroglycerin. Human umbilical vein endothelial cells (HUVECs) and human embryonic kidney 293 cells transfected with empty vector (HEK) or eNOS cDNA (HEK-eNOS) were treated with TERPY (1µM) for different lengths of time. eNOS expression, dimerization, and Ser1177 phosphorylation, caveolin-1 (Cav-1) oligomerization, Cav-1 Tyr14 phosphorylation were evaluated by Western blotting. Studies also assessed the production of reactive oxygen/nitrogen species (ROS/RNS) in HUVECs and HEK-eNOS cells. In HEK cells devoid of eNOS, TERPY released NO without additional stimulus indicating that is an NO donor. Moreover, in HEK-eNOS cells, TERPY-induced NO production that was blocked by L-NAME. In addition, TERPY increased ROS and ONOO- production which were blocked by more than 80% by BH4 (essential eNOS co-factor) and eNOS siRNA. These results suggest that TERPY-induced ROS and ONOO- production were originated from eNOS. HUVECs stimulated with TERPY showed increased eNOS Ser1177 and Cav-1 Tyr14 phosphorylation, and decreased eNOS dimerization, Cav-1 oligomerization, and Cav-1/eNOS interaction after 20min. It suggests that TERPY induces eNOS hyperactivation and uncoupling by disrupting Cav-1/eNOS interaction and depleting BH4. Endothelium-dependent vasodilation in response to NO donor TERPY is associated with eNOS activation and uncoupling, and thereby appears to be mediated, at least in part, via eNOS-dependent ROS/RNS production.
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Affiliation(s)
- Simone R Potje
- Programa Multicêntrico de Pós-graduação em Ciências Fisiológicas, Department of Basic Sciences, School of Dentistry, São Paulo State University, Araçatuba, Brazil; Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL, USA
| | - Zhenlong Chen
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL, USA
| | | | - Lusiane M Bendhack
- Department of Physics and Chemistry, School of Pharmaceutical Sciences, University of São Paulo, Ribeirão Preto, Brazil
| | - Roberto S da Silva
- Department of Physics and Chemistry, School of Pharmaceutical Sciences, University of São Paulo, Ribeirão Preto, Brazil
| | - Marcelo G Bonini
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Cristina Antoniali
- Programa Multicêntrico de Pós-graduação em Ciências Fisiológicas, Department of Basic Sciences, School of Dentistry, São Paulo State University, Araçatuba, Brazil.
| | - Richard D Minshall
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL, USA; Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, USA.
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26
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Mey JT, Blackburn BK, Miranda ER, Chaves AB, Briller J, Bonini MG, Haus JM. Dicarbonyl stress and glyoxalase enzyme system regulation in human skeletal muscle. Am J Physiol Regul Integr Comp Physiol 2017; 314:R181-R190. [PMID: 29046313 DOI: 10.1152/ajpregu.00159.2017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Skeletal muscle insulin resistance is a hallmark of Type 2 diabetes (T2DM) and may be exacerbated by protein modifications by methylglyoxal (MG), known as dicarbonyl stress. The glyoxalase enzyme system composed of glyoxalase 1/2 (GLO1/GLO2) is the natural defense against dicarbonyl stress, yet its protein expression, activity, and regulation remain largely unexplored in skeletal muscle. Therefore, this study investigated dicarbonyl stress and the glyoxalase enzyme system in the skeletal muscle of subjects with T2DM (age: 56 ± 5 yr.; BMI: 32 ± 2 kg/m2) compared with lean healthy control subjects (LHC; age: 27 ± 1 yr.; BMI: 22 ± 1 kg/m2). Skeletal muscle biopsies obtained from the vastus lateralis at basal and insulin-stimulated states of the hyperinsulinemic (40 mU·m-2·min-1)-euglycemic (5 mM) clamp were analyzed for proteins related to dicarbonyl stress and glyoxalase biology. At baseline, T2DM had increased carbonyl stress and lower GLO1 protein expression (-78.8%), which inversely correlated with BMI, percent body fat, and HOMA-IR, while positively correlating with clamp-derived glucose disposal rates. T2DM also had lower NRF2 protein expression (-31.6%), which is a positive regulator of GLO1, while Keap1 protein expression, a negative regulator of GLO1, was elevated (207%). Additionally, insulin stimulation during the clamp had a differential effect on NRF2, Keap1, and MG-modified protein expression. These data suggest that dicarbonyl stress and the glyoxalase enzyme system are dysregulated in T2DM skeletal muscle and may underlie skeletal muscle insulin resistance. Whether these phenotypic differences contribute to the development of T2DM warrants further investigation.
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Affiliation(s)
- Jacob T Mey
- Integrative Physiology Laboratory, University of Illinois at Chicago , Chicago, Illinois.,Department of Kinesiology and Nutrition, University of Illinois at Chicago, Illinois
| | - Brian K Blackburn
- Integrative Physiology Laboratory, University of Illinois at Chicago , Chicago, Illinois.,Department of Kinesiology and Nutrition, University of Illinois at Chicago, Illinois
| | - Edwin R Miranda
- Integrative Physiology Laboratory, University of Illinois at Chicago , Chicago, Illinois.,Department of Kinesiology and Nutrition, University of Illinois at Chicago, Illinois
| | - Alec B Chaves
- Integrative Physiology Laboratory, University of Illinois at Chicago , Chicago, Illinois.,Department of Kinesiology and Nutrition, University of Illinois at Chicago, Illinois
| | - Joan Briller
- Division of Cardiology, Department of Medicine, University of Illinois at Chicago, Illinois
| | - Marcelo G Bonini
- Department of Medicine, University of Illinois at Chicago, Illinois
| | - Jacob M Haus
- Integrative Physiology Laboratory, University of Illinois at Chicago , Chicago, Illinois.,Department of Kinesiology and Nutrition, University of Illinois at Chicago, Illinois
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27
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Abstract
Rates of type 2 diabetes mellitus (T2DM) are rising rapidly across the globe and the impact of this devastating disease threatens to plague the 21st century. While some contributing factors are well-recognized (e.g. sedentary lifestyles and caloric excess), others diabetes-promoting risk factors are less established or poorly appreciated. The latter category includes environmental exposures to diabetogenic contaminants. Herein we review some of the latest concepts and mechanisms by which environmental exposures may contribute to rising rates of T2DM with a particular focus on mechanisms involving mitochondrial dysfunction and imbalances in reactive oxygen species (ROS). Furthermore, while the pathogenesis of diabetes includes impairments in insulin sensitivity as well as insulin secretion, we will specifically delve into the links between environmental exposures to toxicants such as arsenic and disruptions in insulin release from pancreatic β-cells. Since β-cell death or dysfunction lies at the heart of both T2DM as well as type 1 diabetes mellitus (T1DM), environmental endocrine disrupting chemicals (EDCs) that disrupt the production or regulated release of the glucose-lowering hormone insulin are likely contributors to diabetes risk. Importantly, understanding the contribution of toxicants to diabetes risk as well as improved understanding of their mechanisms of action offer unique opportunities to modulate diabetes risk via targeted therapeutics or public policy interventions to reduce and remediate exposures.
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Affiliation(s)
- Marcelo G Bonini
- Department of Pathology, University of Illinois at Chicago, Chicago, IL, USA
| | - Robert M Sargis
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA
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28
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Blajszczak C, Bonini MG. Mitochondria targeting by environmental stressors: Implications for redox cellular signaling. Toxicology 2017; 391:84-89. [PMID: 28750850 DOI: 10.1016/j.tox.2017.07.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/22/2017] [Accepted: 07/21/2017] [Indexed: 01/07/2023]
Abstract
Mitochondria are cellular powerhouses as well as metabolic and signaling hubs regulating diverse cellular functions, from basic physiology to phenotypic fate determination. It is widely accepted that reactive oxygen species (ROS) generated in mitochondria participate in the regulation of cellular signaling, and that some mitochondria chronically operate at a high ROS baseline. However, it is not completely understood how mitochondria adapt to persistently high ROS states and to environmental stressors that disturb the redox balance. Here we will review some of the current concepts regarding how mitochondria resist oxidative damage, how they are replaced when excessive oxidative damage compromises function, and the effect of environmental toxicants (i.e. heavy metals) on the regulation of mitochondrial ROS (mtROS) production and subsequent impact.
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Affiliation(s)
- Chuck Blajszczak
- Departments of Medicine and Pathology, University of Illinois College of Medicine at Chicago, IL, USA
| | - Marcelo G Bonini
- Departments of Medicine and Pathology, University of Illinois College of Medicine at Chicago, IL, USA.
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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: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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Ekoue DN, Bera S, Ansong E, Hart PC, Zaichick S, Domann FE, Bonini MG, Diamond AM. Allele-specific interaction between glutathione peroxidase 1 and manganese superoxide dismutase affects the levels of Bcl-2, Sirt3 and E-cadherin. Free Radic Res 2017; 51:582-590. [PMID: 28587495 PMCID: PMC5683088 DOI: 10.1080/10715762.2017.1339303] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Manganese superoxide dismutase (MnSOD) is a mitochondrial-resident enzyme that reduces superoxide to hydrogen peroxide (H2O2), which can be further reduced to water by glutathione peroxidase (GPX1). Data from human studies have indicated that common polymorphisms in both of these proteins are associated with the risk of several cancers, including breast cancer. Moreover, polymorphisms in MnSOD and GPX1 were shown to interact to increase the risk of breast cancer. To gain an understanding of the molecular mechanisms behind these observations, we engineered human MCF-7 breast cancer cells to exclusively express GPX1 and/or MnSOD alleles and investigated the consequences on the expression of several proteins associated with cancer aetiology. Little or no effect was observed on the ectopic expression of these genes on the phosphorylation of Akt, although allele-specific effects and interactions were observed for the impact on the levels of Bcl-2, E-cadherin and Sirt3. The patterns observed were not consistent with the steady-state levels of H2O2 determined in the transfected cells. These results indicate plausible contributing factors to the effects of allelic variations on cancer risk observed in human epidemiological studies.
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Affiliation(s)
- Dede N. Ekoue
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Soumen Bera
- School of Life Sciences, B. S. Abdur Rahman University, India
| | - Emmanuel Ansong
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Peter C. Hart
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Sofia Zaichick
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | | | - Marcelo G. Bonini
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA,Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Alan M. Diamond
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA,Corresponding author: Phone +01 312 413 8747,
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Oliveira SDS, Castellon M, Machado RF, Elliott MH, Bonini MG, Minshall RD. Depletion of Caveolin‐1 in Lung Vasculature and Increase in Caveolin‐1 Positive Circulating Extracellular Vesicles as Early Biomarkers of Endothelial Injury. FASEB J 2017. [DOI: 10.1096/fasebj.31.1_supplement.1015.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Michael H Elliott
- OphthalmologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOK
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Rauscher GH, Silva A, Pauls H, Frasor J, Bonini MG, Hoskins K. Racial disparity in survival from estrogen and progesterone receptor-positive breast cancer: implications for reducing breast cancer mortality disparities. Breast Cancer Res Treat 2017; 163:321-330. [PMID: 28251385 DOI: 10.1007/s10549-017-4166-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 02/15/2017] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Non-Latina black breast cancer patients experience a shorter survival from breast cancer than their non-Latina white counterparts. We compared breast cancer-specific survival for the subset of black and white patients with estrogen and/or progesterone receptor-positive tumors that are generally targeted with endocrine therapy. METHODS Using data collected from a population-based cohort of breast cancer patients from Chicago, IL, Kaplan-Meier survival curves and hazard functions were generated and proportional hazards models were estimated to determine the black/white disparity in time to death from breast cancer while adjusting for age at diagnosis, patient characteristics, treatment-related variables, and tumor grade and stage. RESULTS In regression models, hazard of breast cancer death among ER/PR-positive patients was at least 4 times higher for black than for white patients in all models tested. Notably, even after adjusting for stage at diagnosis, tumor grade, and treatment variables (including initiation of systemic adjuvant therapies), the hazard ratio for death from ER/PR-positive breast cancer between black and white women was 4.39 (95% CI 1.76, 10.9, p = 0.001). CONCLUSIONS We observed a racial disparity in breast cancer survival for patients diagnosed with ER/PR-positive tumors that did not appear to be due to differences in tumor stage, grade, or therapy initiation in black patients, suggesting that there may be racial differences in the molecular characteristics of hormone receptor-positive tumors, such that ER/PR-positive tumors in black patients may be less responsive to standard treatments.
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Affiliation(s)
- Garth H Rauscher
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois at Chicago, MC 923, Chicago, IL, 60612, USA. .,Institute for Health Research and Policy, University of Illinois at Chicago, Chicago, IL, USA.
| | - Abigail Silva
- Department of Public Health Sciences, Loyola University, Chicago, IL, USA.,Center of Innovation for Complex Chronic Healthcare, Edward Hines, Jr. VA Hospital, Hines, IL, USA
| | - Heather Pauls
- College of Nursing, University of Illinois at Chicago, Chicago, IL, USA
| | - Jonna Frasor
- Department of Physiology and Biophysics, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Marcelo G Bonini
- Departments of Medicine and Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Kent Hoskins
- Division of Hematology/Oncology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
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Oliveira SDS, Castellon M, Chen J, Bonini MG, Gu X, Elliott MH, Machado RF, Minshall RD. Inflammation-induced caveolin-1 and BMPRII depletion promotes endothelial dysfunction and TGF-β-driven pulmonary vascular remodeling. Am J Physiol Lung Cell Mol Physiol 2017; 312:L760-L771. [PMID: 28188225 DOI: 10.1152/ajplung.00484.2016] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 01/11/2017] [Accepted: 02/05/2017] [Indexed: 12/14/2022] Open
Abstract
Endothelial cell (EC) activation and vascular injury are hallmark features of acute lung injury (ALI) and acute respiratory distress syndrome (ARDS). Caveolin-1 (Cav-1) is highly expressed in pulmonary microvascular ECs and plays a key role in maintaining vascular homeostasis. The aim of this study was to determine if the lung inflammatory response to Escherichia coli lipopolysaccharide (LPS) promotes priming of ECs via Cav-1 depletion and if this contributes to the onset of pulmonary vascular remodeling. To test the hypothesis that depletion of Cav-1 primes ECs to respond to profibrotic signals, C57BL6 wild-type (WT) mice (Tie2.Cre-;Cav1fl/fl ) were exposed to nebulized LPS (10 mg; 1 h daily for 4 days) and compared with EC-specific Cav1-/- (Tie2.Cre+;Cav1fl/fl ). After 96 h of LPS exposure, total lung Cav-1 and bone morphogenetic protein receptor type II (BMPRII) expression were reduced in WT mice. Moreover, plasma albumin leakage, infiltration of immune cells, and levels of IL-6/IL-6R and transforming growth factor-β (TGF-β) were elevated in both LPS-treated WT and EC-Cav1-/- mice. Finally, EC-Cav1-/- mice exhibited a modest increase in microvascular thickness basally and even more so on exposure to LPS (96 h). EC-Cav1-/- mice and LPS-treated WT mice exhibited reduced BMPRII expression and endothelial nitric oxide synthase uncoupling, which along with increased TGF-β promoted TGFβRI-dependent SMAD-2/3 phosphorylation. Finally, human lung sections from patients with ARDS displayed reduced EC Cav-1 expression, elevated TGF-β levels, and severe pulmonary vascular remodeling. Thus EC Cav-1 depletion, oxidative stress-mediated reduction in BMPRII expression, and enhanced TGF-β-driven SMAD-2/3 signaling promote pulmonary vascular remodeling in inflamed lungs.
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Affiliation(s)
- Suellen D S Oliveira
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, Illinois
| | - Maricela Castellon
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, Illinois.,Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois
| | - Jiwang Chen
- Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | - Marcelo G Bonini
- Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | - Xiaowu Gu
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Michael H Elliott
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Roberto F Machado
- Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | - Richard D Minshall
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, Illinois; .,Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois
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Ekoue DN, Zaichick S, Valyi-Nagy K, Picklo M, Lacher C, Hoskins K, Warso MA, Bonini MG, Diamond AM. Selenium levels in human breast carcinoma tissue are associated with a common polymorphism in the gene for SELENOP (Selenoprotein P). J Trace Elem Med Biol 2017; 39:227-233. [PMID: 27908419 DOI: 10.1016/j.jtemb.2016.11.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 11/16/2022]
Abstract
Selenium supplementation of the diets of rodents has consistently been shown to suppress mammary carcinogenesis and some, albeit not all, human epidemiological studies have indicated an inverse association between selenium and breast cancer risk. In order to better understand the role selenium plays in breast cancer, 30 samples of tumor tissue were obtained from women with breast cancer and analyzed for selenium concentration, the levels of several selenium-containing proteins and the levels of the MnSOD anti-oxidant protein. Polymorphisms within the genes for these same proteins were determined from DNA isolated from the tissue samples. There was a wide range of selenium in these tissues, ranging from 24 to 854ng/gm. The selenium levels in the tissues were correlated to the genotype of the SELENOP selenium carrier protein, but not to other proteins whose levels have been reported to be responsive to selenium availability, including GPX1, SELENOF and SBP1. There was an association between a polymorphism in the gene for MnSOD and the levels of the encoded protein. These studies were the first to examine the relationship between selenium levels, genotypes and protein levels in human tissues. Furthermore, the obtained data provide evidence for the need to obtain data about the effects of selenium in breast cancer by examining samples from that particular tissue type.
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Affiliation(s)
- Dede N Ekoue
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Sofia Zaichick
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Klara Valyi-Nagy
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Matthew Picklo
- USDA-ARS, Grand Forks Human Nutrition Research Center, Grand Forks, ND, USA.
| | - Craig Lacher
- USDA-ARS, Grand Forks Human Nutrition Research Center, Grand Forks, ND, USA.
| | - Kent Hoskins
- Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Michael A Warso
- Department of Surgery, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Marcelo G Bonini
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA; Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Alan M Diamond
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
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de Abreu ALP, Malaguti N, Souza RP, Uchimura NS, Ferreira ÉC, Pereira MW, Carvalho MDB, Pelloso SM, Bonini MG, Gimenes F, Consolaro MEL. Association of human papillomavirus, Neisseria gonorrhoeae and Chlamydia trachomatis co-infections on the risk of high-grade squamous intraepithelial cervical lesion. Am J Cancer Res 2016; 6:1371-1383. [PMID: 27429850 PMCID: PMC4937739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 03/13/2016] [Indexed: 06/06/2023] Open
Abstract
The link between high-risk human Papillomavirus (HR-HPV) and other sexually transmitted diseases (STDs) in the risk of developing cervical cancer still unclear. Thus, in this report we investigated the rates of co-infections between HPV and other important non-HPV STDs in different cervical findings using a multiplex polymerase chain reaction (M-PCR) to simultaneously detect Chlamydia trachomatis, Neisseria gonorrhoeae, Mycoplasma genitalium, Trichomonas vaginalis, HSV-1 and -2, and Treponema pallidum. A total of 838 women aged 18 to 68 years were screened using Papanicolaou smears for cervical abnormalities, HPV and non-HPV STDs using PCR and M-PCR methods. A total of 614 (73.3%) of the women had normal cytology (NILM) and 224 (26.7%) women exhibited abnormal cytology (≥ ASC-US). HPV-DNA prevalence was 33.9%, and HPV-16 was the most prevalent genotype in women with NILM and ≥ ASC-US cytology. Non-HPV STDs were detected in 30.4% women and T. vaginalis was the most prevalent one (11.6%). A higher increased risk of ≥ ASC-US and HSIL occurred in co-infections of HR-HPV with C. trachomatis and N. gonorrhoeae. Co-infections of HPV-DNA and HR-HPV with HSV-2 exhibited a similar increased risk but only with ≥ ASC-US. Co-infections of HPV-DNA and HR-HPV with T. vaginalis demonstrated a similar increased risk of ≥ ASC-US and HSIL. We found that C. trachomatis and N. gonorrhoeae were the primary pathogens associated with HR-HPV for the increased risk for all grades of cervical abnormalities but mainly for HSIL, suggesting a possible synergistic action in cervical lesions progression. Our results reinforce the hypothesis that some non-HPV STDs might play a role as co-factors in HPV-mediated cervical carcinogenesis. These data improve our understanding of the etiology of SCC and may also be useful for disease prevention.
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Affiliation(s)
- André LP de Abreu
- Clinical Cytology Laboratory, State University of Maringá (UEM)Maringá, Paraná, Brazil
- Department of Pharmacology, University of Illinois at ChicagoIllinois, USA
| | - Natália Malaguti
- Clinical Cytology Laboratory, State University of Maringá (UEM)Maringá, Paraná, Brazil
| | - Raquel P Souza
- Clinical Cytology Laboratory, State University of Maringá (UEM)Maringá, Paraná, Brazil
| | | | - Érika C Ferreira
- Department of Statistics, State University of MaringáParaná, Brazil
| | - Monalisa W Pereira
- Clinical Cytology Laboratory, State University of Maringá (UEM)Maringá, Paraná, Brazil
| | | | - Sandra M Pelloso
- Department of Nursing, State University of MaringáParaná, Brazil
| | - Marcelo G Bonini
- Department of Pharmacology, University of Illinois at ChicagoIllinois, USA
| | - Fabrícia Gimenes
- Clinical Cytology Laboratory, State University of Maringá (UEM)Maringá, Paraná, Brazil
| | - Marcia EL Consolaro
- Clinical Cytology Laboratory, State University of Maringá (UEM)Maringá, Paraná, Brazil
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Baig MS, Zaichick SV, Mao M, de Abreu ALP, Bakhshi FR, Hart PC, Saqib U, Deng J, Chatterjee S, Block ML, Vogel SM, Malik AB, Consolaro ME, Christman JW, Minshall RD, Gantner BN, Bonini MG. NOS1-derived nitric oxide promotes NF-κB transcriptional activity through inhibition of suppressor of cytokine signaling-1. J Biophys Biochem Cytol 2015. [DOI: 10.1083/jcb.2106oia180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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38
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Baig MS, Zaichick SV, Mao M, de Abreu AL, Bakhshi FR, Hart PC, Saqib U, Deng J, Chatterjee S, Block ML, Vogel SM, Malik AB, Consolaro MEL, Christman JW, Minshall RD, Gantner BN, Bonini MG. NOS1-derived nitric oxide promotes NF-κB transcriptional activity through inhibition of suppressor of cytokine signaling-1. ACTA ACUST UNITED AC 2015; 212:1725-38. [PMID: 26324446 PMCID: PMC4577833 DOI: 10.1084/jem.20140654] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 08/06/2015] [Indexed: 11/04/2022]
Abstract
The NF-κB pathway is central to the regulation of inflammation. Here, we demonstrate that the low-output nitric oxide (NO) synthase 1 (NOS1 or nNOS) plays a critical role in the inflammatory response by promoting the activity of NF-κB. Specifically, NOS1-derived NO production in macrophages leads to proteolysis of suppressor of cytokine signaling 1 (SOCS1), alleviating its repression of NF-κB transcriptional activity. As a result, NOS1(-/-) mice demonstrate reduced cytokine production, lung injury, and mortality when subjected to two different models of sepsis. Isolated NOS1(-/-) macrophages demonstrate similar defects in proinflammatory transcription on challenge with Gram-negative bacterial LPS. Consistently, we found that activated NOS1(-/-) macrophages contain increased SOCS1 protein and decreased levels of p65 protein compared with wild-type cells. NOS1-dependent S-nitrosation of SOCS1 impairs its binding to p65 and targets SOCS1 for proteolysis. Treatment of NOS1(-/-) cells with exogenous NO rescues both SOCS1 degradation and stabilization of p65 protein. Point mutation analysis demonstrated that both Cys147 and Cys179 on SOCS1 are required for its NO-dependent degradation. These findings demonstrate a fundamental role for NOS1-derived NO in regulating TLR4-mediated inflammatory gene transcription, as well as the intensity and duration of the resulting host immune response.
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Affiliation(s)
- Mirza Saqib Baig
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607 Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Sofia V Zaichick
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607 Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Mao Mao
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607 Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Andre L de Abreu
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607 Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607 Programa de Biociencias Aplicadas a Farmacia (PBF), Universidade Estadual de Maringa, Maringa 87020-900, Brazil
| | - Farnaz R Bakhshi
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Peter C Hart
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607 Department of Anatomy and Cell Biology, Stark Neurosciences Research Institute, Indiana University, Indianapolis, IN 46202
| | - Uzma Saqib
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Jing Deng
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Saurabh Chatterjee
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Michelle L Block
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Stephen M Vogel
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Asrar B Malik
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Marcia E L Consolaro
- Programa de Biociencias Aplicadas a Farmacia (PBF), Universidade Estadual de Maringa, Maringa 87020-900, Brazil
| | - John W Christman
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Richard D Minshall
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607 Department of Environmental Health Sciences, University of South Carolina, Columbia, SC 29208
| | - Benjamin N Gantner
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607
| | - Marcelo G Bonini
- Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607 Department of Medicine, Department of Pharmacology, Department of Anesthesiology, and Department of Pathology, University of Illinois College of Medicine, Chicago, IL 60607 Department of Anatomy and Cell Biology, Stark Neurosciences Research Institute, Indiana University, Indianapolis, IN 46202
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Hart PC, Mao M, de Abreu ALP, Ansenberger-Fricano K, Ekoue DN, Ganini D, Kajdacsy-Balla A, Diamond AM, Minshall RD, Consolaro MEL, Santos JH, Bonini MG. MnSOD upregulation sustains the Warburg effect via mitochondrial ROS and AMPK-dependent signalling in cancer. Nat Commun 2015; 6:6053. [PMID: 25651975 PMCID: PMC4319569 DOI: 10.1038/ncomms7053] [Citation(s) in RCA: 191] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 12/09/2014] [Indexed: 12/14/2022] Open
Abstract
Manganese superoxide dismutase (MnSOD/SOD2) is a mitochondria-resident enzyme that governs the types of reactive oxygen species egressing from the organelle to affect cellular signaling. Here, we demonstrate that MnSOD upregulation in cancer cells establishes a steady flow of H2O2 originating from mitochondria that sustains AMP-activated kinase (AMPK) activation and the metabolic shift to glycolysis. Restricting MnSOD expression or inhibiting AMPK suppress the metabolic switch and dampens the viability of transformed cells indicating that the MnSOD/AMPK axis is critical in support cancer cell bioenergetics. Recapitulating in vitro findings, clinical and epidemiologic analyses of MnSOD expression and AMPK activation indicated that the MnSOD/AMPK pathway is most active in advanced stage and aggressive breast cancer subtypes. Taken together, our results indicate that MnSOD serves as a biomarker of cancer progression and acts as critical regulator of tumor cell metabolism.
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Affiliation(s)
- Peter C Hart
- 1] Department of Medicine, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA [2] Department of Pathology, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA
| | - Mao Mao
- 1] Department of Medicine, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA [2] Department of Pharmacology, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA
| | - Andre Luelsdorf P de Abreu
- 1] Department of Medicine, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA [2] Department of Pharmacology, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA [3] Universidade Estadual de Maringa, Avenida Colombo, 5790, CEP, 87020-900 Maringa, PR, Brazil
| | - Kristine Ansenberger-Fricano
- 1] Department of Medicine, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA [2] Department of Pharmacology, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA
| | - Dede N Ekoue
- Department of Pathology, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA
| | - Douglas Ganini
- Free Radical Metabolite Section, Laboratory of Toxicology and Pharmacology, National Institute of Environmental Health Sciences/NIH, 111T.W., Alexander Drive MD-F02, Research Triangle Park, North Carolina 27709, USA
| | - Andre Kajdacsy-Balla
- Department of Pathology, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA
| | - Alan M Diamond
- Department of Pathology, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA
| | - Richard D Minshall
- 1] Department of Pharmacology, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA [2] Department of Anesthesiology, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA
| | - Marcia E L Consolaro
- Universidade Estadual de Maringa, Avenida Colombo, 5790, CEP, 87020-900 Maringa, PR, Brazil
| | - Janine H Santos
- Department of Physiology and Pharmacology, University of Medicine and Dentistry of New Jersey, 185 South Orange Avenue, Newark, New Jersey 07103, USA
| | - Marcelo G Bonini
- 1] Department of Medicine, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA [2] Department of Pathology, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA [3] Department of Pharmacology, University of Illinois at Chicago, 909 South Wolcott Avenue, COMRB 1131, Chicago, Illinois 60612, USA
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Tang H, Chen J, Fraidenburg DR, Song S, Sysol JR, Drennan AR, Offermanns S, Ye RD, Bonini MG, Minshall RD, Garcia JGN, Machado RF, Makino A, Yuan JXJ. Deficiency of Akt1, but not Akt2, attenuates the development of pulmonary hypertension. Am J Physiol Lung Cell Mol Physiol 2014; 308:L208-20. [PMID: 25416384 DOI: 10.1152/ajplung.00242.2014] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Pulmonary vascular remodeling, mainly attributable to enhanced pulmonary arterial smooth muscle cell proliferation and migration, is a major cause for elevated pulmonary vascular resistance and pulmonary arterial pressure in patients with pulmonary hypertension. The signaling cascade through Akt, comprised of three isoforms (Akt1-3) with distinct but overlapping functions, is involved in regulating cell proliferation and migration. This study aims to investigate whether the Akt/mammalian target of rapamycin (mTOR) pathway, and particularly which Akt isoform, contributes to the development and progression of pulmonary vascular remodeling in hypoxia-induced pulmonary hypertension (HPH). Compared with the wild-type littermates, Akt1(-/-) mice were protected against the development and progression of chronic HPH, whereas Akt2(-/-) mice did not demonstrate any significant protection against the development of HPH. Furthermore, pulmonary vascular remodeling was significantly attenuated in the Akt1(-/-) mice, with no significant effect noted in the Akt2(-/-) mice after chronic exposure to normobaric hypoxia (10% O2). Overexpression of the upstream repressor of Akt signaling, phosphatase and tensin homolog deleted on chromosome 10 (PTEN), and conditional and inducible knockout of mTOR in smooth muscle cells were also shown to attenuate the rise in right ventricular systolic pressure and the development of right ventricular hypertrophy. In conclusion, Akt isoforms appear to have a unique function within the pulmonary vasculature, with the Akt1 isoform having a dominant role in pulmonary vascular remodeling associated with HPH. The PTEN/Akt1/mTOR signaling pathway will continue to be a critical area of study in the pathogenesis of pulmonary hypertension, and specific Akt isoforms may help specify therapeutic targets for the treatment of pulmonary hypertension.
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Affiliation(s)
- Haiyang Tang
- Department of Medicine, Division of Translational and Regenerative Medicine, The University of Arizona College of Medicine, Tucson, Arizona; Department of Physiology, The University of Arizona College of Medicine, Tucson, Arizona; Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Jiwang Chen
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Dustin R Fraidenburg
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Shanshan Song
- Department of Medicine, Division of Translational and Regenerative Medicine, The University of Arizona College of Medicine, Tucson, Arizona; Department of Physiology, The University of Arizona College of Medicine, Tucson, Arizona; Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Justin R Sysol
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois; Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois; and
| | - Abigail R Drennan
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Stefan Offermanns
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Richard D Ye
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois; and
| | - Marcelo G Bonini
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois; and
| | - Richard D Minshall
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois; and
| | - Joe G N Garcia
- Department of Medicine, Division of Translational and Regenerative Medicine, The University of Arizona College of Medicine, Tucson, Arizona
| | - Roberto F Machado
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Ayako Makino
- Department of Physiology, The University of Arizona College of Medicine, Tucson, Arizona
| | - Jason X-J Yuan
- Department of Medicine, Division of Translational and Regenerative Medicine, The University of Arizona College of Medicine, Tucson, Arizona; Department of Physiology, The University of Arizona College of Medicine, Tucson, Arizona; Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois; Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois; and
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Taetzsch T, Levesque S, McGraw C, Brookins S, Luqa R, Bonini MG, Mason RP, Oh U, Block ML. Redox regulation of NF-κB p50 and M1 polarization in microglia. Glia 2014; 63:423-40. [PMID: 25331559 DOI: 10.1002/glia.22762] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 10/02/2014] [Indexed: 12/17/2022]
Abstract
Redox-signaling is implicated in deleterious microglial activation underlying CNS disease, but how ROS program aberrant microglial function is unknown. Here, the oxidation of NF-κB p50 to a free radical intermediate is identified as a marker of dysfunctional M1 (pro-inflammatory) polarization in microglia. Microglia exposed to steady fluxes of H2 O2 showed altered NF-κB p50 protein-protein interactions, decreased NF-κB p50 DNA binding, and augmented late-stage TNFα expression, indicating that H2 O2 impairs NF-κB p50 function and prolongs amplified M1 activation. NF-κB p50(-/-) mice and cultures exhibited a disrupted M2 (alternative) response and impaired resolution of the M1 response. Persistent neuroinflammation continued 1 week after LPS (1 mg/kg, IP) administration in the NF-κB p50(-/-) mice. However, peripheral inflammation had already resolved in both strains of mice. Treatment with the spin-trap DMPO mildly reduced LPS-induced 22 h TNFα in the brain in NF-κB p50(+/+) mice. Interestingly, DMPO failed to reduce and strongly augmented brain TNFα production in NF-κB p50(-/-) mice, implicating a fundamental role for NF-κB p50 in the regulation of chronic neuroinflammation by free radicals. These data identify NF-κB p50 as a key redox-signaling mechanism regulating the M1/M2 balance in microglia, where loss of function leads to a CNS-specific vulnerability to chronic inflammation.
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Affiliation(s)
- Thomas Taetzsch
- Department of Anatomy and Neurobiology, Virginia Commonwealth University Medical Campus, Richmond, Virginia
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Mao M, Varadarajan S, Fukai T, Bakhshi FR, Chernaya O, Dudley SC, Minshall RD, Bonini MG. Nitroglycerin tolerance in caveolin-1 deficient mice. PLoS One 2014; 9:e104101. [PMID: 25158065 PMCID: PMC4144835 DOI: 10.1371/journal.pone.0104101] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 07/06/2014] [Indexed: 11/18/2022] Open
Abstract
Nitrate tolerance developed after persistent nitroglycerin (GTN) exposure limits its clinical utility. Previously, we have shown that the vasodilatory action of GTN is dependent on endothelial nitric oxide synthase (eNOS/NOS3) activity. Caveolin-1 (Cav-1) is known to interact with NOS3 on the cytoplasmic side of cholesterol-enriched plasma membrane microdomains (caveolae) and to inhibit NOS3 activity. Loss of Cav-1 expression results in NOS3 hyperactivation and uncoupling, converting NOS3 into a source of superoxide radicals, peroxynitrite, and oxidative stress. Therefore, we hypothesized that nitrate tolerance induced by persistent GTN treatment results from NOS3 dysfunction and vascular toxicity. Exposure to GTN for 48-72 h resulted in nitrosation and depletion (>50%) of Cav-1, NOS3 uncoupling as measured by an increase in peroxynitrite production (>100%), and endothelial toxicity in cultured cells. In the Cav-1 deficient mice, NOS3 dysfunction was accompanied by GTN tolerance (>50% dilation inhibition at low GTN concentrations). In conclusion, GTN tolerance results from Cav-1 modification and depletion by GTN that causes persistent NOS3 activation and uncoupling, preventing it from participating in GTN-medicated vasodilation.
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Affiliation(s)
- Mao Mao
- Department of Medicine-Section of Cardiology, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Pathology, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Sudhahar Varadarajan
- Department of Medicine-Section of Cardiology, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Tohru Fukai
- Department of Medicine-Section of Cardiology, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Farnaz R. Bakhshi
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Olga Chernaya
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Samuel C. Dudley
- Department of Medicine-Section of Cardiology, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Richard D. Minshall
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Marcelo G. Bonini
- Department of Medicine-Section of Cardiology, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, United States of America
- * E-mail:
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Bera S, Weinberg F, Ekoue DN, Ansenberger-Fricano K, Mao M, Bonini MG, Diamond AM. Natural allelic variations in glutathione peroxidase-1 affect its subcellular localization and function. Cancer Res 2014; 74:5118-26. [PMID: 25047527 DOI: 10.1158/0008-5472.can-14-0660] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Glutathione peroxidase 1 (GPx-1) has been implicated in the etiology of several common diseases due to the association between specific allelic variations and cancer risk. The most common among these variations are the codon 198 polymorphism that results in either a leucine or proline and the number of alanine repeat codons in the coding sequence. The molecular and biologic consequences of these variations remain to be characterized. Toward achieving this goal, we have examined the cellular location of GPx-1 encoded by allelic variants by ectopically expressing these genes in MCF-7 human breast carcinoma cells that produce undetectable levels of GPx-1, thus achieving exclusive expression in the same cellular environment. A differential distribution between the cytoplasm and mitochondria was observed, with the allele expressing the leucine-198 polymorphism and 7 alanine repeats being more cytoplasmically located than the other alleles examined. To assess whether the distribution of GPx-1 between the cytoplasm and mitochondria had a biologic consequence, we engineered derivative GPx-1 proteins that were targeted to the mitochondria by the addition of a mitochondria targeting sequence and expressed these proteins in MCF-7 cells. These cells were examined for their response to oxidative stress, energy metabolism, and impact on cancer-associated signaling molecules. The results obtained indicated that both primary GPx-1 sequence and cellular location have a profound impact on cellular biology and offer feasible hypotheses about how expression of distinct GPx-1 alleles can affect cancer risk. Cancer Res; 74(18); 5118-26. ©2014 AACR.
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Affiliation(s)
- Soumen Bera
- Department of Pathology, University of Illinois at Chicago, Chicago, Illinois
| | - Frank Weinberg
- Department of Pathology, University of Illinois at Chicago, Chicago, Illinois
| | - Dede N Ekoue
- Department of Pathology, University of Illinois at Chicago, Chicago, Illinois
| | | | - Mao Mao
- Department of Pathology, University of Illinois at Chicago, Chicago, Illinois. Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Marcelo G Bonini
- Department of Pathology, University of Illinois at Chicago, Chicago, Illinois. Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Alan M Diamond
- Department of Pathology, University of Illinois at Chicago, Chicago, Illinois.
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Yang KC, Rutledge CA, Mao M, Bakhshi FR, Xie A, Liu H, Bonini MG, Patel HH, Minshall RD, Dudley SC. Caveolin-1 modulates cardiac gap junction homeostasis and arrhythmogenecity by regulating cSrc tyrosine kinase. Circ Arrhythm Electrophysiol 2014; 7:701-10. [PMID: 25017399 DOI: 10.1161/circep.113.001394] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Genome-wide association studies have revealed significant association of caveolin-1 (Cav1) gene variants with increased risk of cardiac arrhythmias. Nevertheless, the mechanism for this linkage is unclear. METHODS AND RESULTS Using adult Cav1(-/-) mice, we revealed a marked reduction in the left ventricular conduction velocity in the absence of myocardial Cav1, which is accompanied with increased inducibility of ventricular arrhythmias. Further studies demonstrated that loss of Cav1 leads to the activation of cSrc tyrosine kinase, resulting in the downregulation of connexin 43 and subsequent electric abnormalities. Pharmacological inhibition of cSrc mitigates connexin 43 downregulation, slowed conduction, and arrhythmia inducibility in Cav1(-/-) animals. Using a transgenic mouse model with cardiac-specific overexpression of angiotensin-converting enzyme (ACE8/8), we demonstrated that, on enhanced cardiac renin-angiotensin system activity, Cav1 dissociated from cSrc because of increased Cav1 S-nitrosation at Cys(156), leading to cSrc activation, connexin 43 reduction, impaired gap junction function, and subsequent increase in the propensity for ventricular arrhythmias and sudden cardiac death. Renin-angiotensin system-induced Cav1 S-nitrosation was associated with increased Cav1-endothelial nitric oxide synthase binding in response to increased mitochondrial reactive oxidative species generation. CONCLUSIONS The present studies reveal the critical role of Cav1 in modulating cSrc activation, gap junction remodeling, and ventricular arrhythmias. These data provide a mechanistic explanation for the observed genetic link between Cav1 and cardiac arrhythmias in humans and suggest that targeted regulation of Cav1 may reduce arrhythmic risk in cardiac diseases associated with renin-angiotensin system activation.
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Affiliation(s)
- Kai-Chien Yang
- From the Lifespan Cardiovascular Research Center, Department of Medicine, Warren Alpert School of Medicine, Brown University, Providence Veterans Administration Medical Center, RI (K.-C.Y., C.A.R., A.X., H.L., S.C.D.); Department of Medicine (K.-C.Y., C.A.R.), Department of Pharmacology (M.M., M.G.B., R.D.M.), and Department of Anesthesiology (F.R.B., R.D.M.), University of Illinois at Chicago; and Department of Anesthesiology, VA San Diego Healthcare Systems, University of California (H.H.P.)
| | - Cody A Rutledge
- From the Lifespan Cardiovascular Research Center, Department of Medicine, Warren Alpert School of Medicine, Brown University, Providence Veterans Administration Medical Center, RI (K.-C.Y., C.A.R., A.X., H.L., S.C.D.); Department of Medicine (K.-C.Y., C.A.R.), Department of Pharmacology (M.M., M.G.B., R.D.M.), and Department of Anesthesiology (F.R.B., R.D.M.), University of Illinois at Chicago; and Department of Anesthesiology, VA San Diego Healthcare Systems, University of California (H.H.P.)
| | - Mao Mao
- From the Lifespan Cardiovascular Research Center, Department of Medicine, Warren Alpert School of Medicine, Brown University, Providence Veterans Administration Medical Center, RI (K.-C.Y., C.A.R., A.X., H.L., S.C.D.); Department of Medicine (K.-C.Y., C.A.R.), Department of Pharmacology (M.M., M.G.B., R.D.M.), and Department of Anesthesiology (F.R.B., R.D.M.), University of Illinois at Chicago; and Department of Anesthesiology, VA San Diego Healthcare Systems, University of California (H.H.P.)
| | - Farnaz R Bakhshi
- From the Lifespan Cardiovascular Research Center, Department of Medicine, Warren Alpert School of Medicine, Brown University, Providence Veterans Administration Medical Center, RI (K.-C.Y., C.A.R., A.X., H.L., S.C.D.); Department of Medicine (K.-C.Y., C.A.R.), Department of Pharmacology (M.M., M.G.B., R.D.M.), and Department of Anesthesiology (F.R.B., R.D.M.), University of Illinois at Chicago; and Department of Anesthesiology, VA San Diego Healthcare Systems, University of California (H.H.P.)
| | - An Xie
- From the Lifespan Cardiovascular Research Center, Department of Medicine, Warren Alpert School of Medicine, Brown University, Providence Veterans Administration Medical Center, RI (K.-C.Y., C.A.R., A.X., H.L., S.C.D.); Department of Medicine (K.-C.Y., C.A.R.), Department of Pharmacology (M.M., M.G.B., R.D.M.), and Department of Anesthesiology (F.R.B., R.D.M.), University of Illinois at Chicago; and Department of Anesthesiology, VA San Diego Healthcare Systems, University of California (H.H.P.)
| | - Hong Liu
- From the Lifespan Cardiovascular Research Center, Department of Medicine, Warren Alpert School of Medicine, Brown University, Providence Veterans Administration Medical Center, RI (K.-C.Y., C.A.R., A.X., H.L., S.C.D.); Department of Medicine (K.-C.Y., C.A.R.), Department of Pharmacology (M.M., M.G.B., R.D.M.), and Department of Anesthesiology (F.R.B., R.D.M.), University of Illinois at Chicago; and Department of Anesthesiology, VA San Diego Healthcare Systems, University of California (H.H.P.)
| | - Marcelo G Bonini
- From the Lifespan Cardiovascular Research Center, Department of Medicine, Warren Alpert School of Medicine, Brown University, Providence Veterans Administration Medical Center, RI (K.-C.Y., C.A.R., A.X., H.L., S.C.D.); Department of Medicine (K.-C.Y., C.A.R.), Department of Pharmacology (M.M., M.G.B., R.D.M.), and Department of Anesthesiology (F.R.B., R.D.M.), University of Illinois at Chicago; and Department of Anesthesiology, VA San Diego Healthcare Systems, University of California (H.H.P.)
| | - Hemal H Patel
- From the Lifespan Cardiovascular Research Center, Department of Medicine, Warren Alpert School of Medicine, Brown University, Providence Veterans Administration Medical Center, RI (K.-C.Y., C.A.R., A.X., H.L., S.C.D.); Department of Medicine (K.-C.Y., C.A.R.), Department of Pharmacology (M.M., M.G.B., R.D.M.), and Department of Anesthesiology (F.R.B., R.D.M.), University of Illinois at Chicago; and Department of Anesthesiology, VA San Diego Healthcare Systems, University of California (H.H.P.)
| | - Richard D Minshall
- From the Lifespan Cardiovascular Research Center, Department of Medicine, Warren Alpert School of Medicine, Brown University, Providence Veterans Administration Medical Center, RI (K.-C.Y., C.A.R., A.X., H.L., S.C.D.); Department of Medicine (K.-C.Y., C.A.R.), Department of Pharmacology (M.M., M.G.B., R.D.M.), and Department of Anesthesiology (F.R.B., R.D.M.), University of Illinois at Chicago; and Department of Anesthesiology, VA San Diego Healthcare Systems, University of California (H.H.P.)
| | - Samuel C Dudley
- From the Lifespan Cardiovascular Research Center, Department of Medicine, Warren Alpert School of Medicine, Brown University, Providence Veterans Administration Medical Center, RI (K.-C.Y., C.A.R., A.X., H.L., S.C.D.); Department of Medicine (K.-C.Y., C.A.R.), Department of Pharmacology (M.M., M.G.B., R.D.M.), and Department of Anesthesiology (F.R.B., R.D.M.), University of Illinois at Chicago; and Department of Anesthesiology, VA San Diego Healthcare Systems, University of California (H.H.P.).
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Bonini MG, Gantner BN. The multifaceted activities of AMPK in tumor progression--why the "one size fits all" definition does not fit at all? IUBMB Life 2014; 65:889-96. [PMID: 24265196 DOI: 10.1002/iub.1213] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 08/27/2013] [Indexed: 12/19/2022]
Abstract
AMP-activated kinase (AMPK) is a central cellular energetic biosensor and regulator of a broad array of cellular metabolic routes activated by nutrient deprivation, mitochondrial dysfunction, oxidative stress, and cytokines. The activation of AMPK maintains ATP levels in response to hypoxia, mitochondrial dysfunction, and shortage of essential metabolic fuels. Activated AMPK turns on energy sparing pathways and promotes antiapoptotic functions thereby permitting cells to survive extremely hostile conditions for prolonged periods of time. Cancer cells in solid tumors are generally subjected to such harsh conditions; however, they manage to efficiently survive and proliferate. This is likely due, in great part, to a peculiar form of metabolism that is heavily reliant on glycolysis and which promotes cancer cell adaptation and tumor progression. AMPK controls the influx and utilization of glucose by cancer cells and therefore has emerged as an attractive target to treat cancer. Investigations exploring this possibility demonstrated that activators or inhibitors of AMPK impact cancer cell viability and possibly cancer progression. For example, the AMPK activator metformin induces apoptosis in a variety of cancer cell lines and models. A major problem with many of the studies on metformin is that little effort has been invested in unraveling how metformin activates AMPK in the many contexts it has been tested. This is significant because many AMPK-independent effects of metformin have been documented. The notion that AMPK acts solely as a tumor suppressor also conflicts with findings that it confers resistance to nutrient deprivation, sustains NADPH levels in cancer cells, facilitates stress-induced gene transcription, promotes cell survival via antiapoptotic function upregulation, intermediates epithelial-to-mesenchymal transition, and increases malignant transformation. These are all recognized steps necessary for the successful evolution of tumors. This review highlights some of these findings and proposes that the role of AMPK in cancer should be reconsidered in light of the complex roles of AMPK under different metabolic conditions.
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Affiliation(s)
- Marcelo G Bonini
- Department of Medicine, University of Illinois at Chicago, IL, USA; Department of Pharmacology, University of Illinois at Chicago, IL, USA; Department of Pathology, University of Illinois at Chicago, IL, USA
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Abstract
Mitochondria are essential to providing ATP, thereby satisfying the energy demand of the incessant electrical activity and contractile action of cardiac muscle. Emerging evidence indicates that mitochondrial dysfunction can adversely affect cardiac electrical functioning by impairing the intracellular ion homeostasis and membrane excitability through reduced ATP production and excessive reactive oxygen species (ROS) generation, resulting in increased propensity to cardiac arrhythmias. In this review, the molecular mechanisms linking mitochondrial dysfunction to cardiac arrhythmias are discussed with an emphasis on the impact of increased mitochondrial ROS on the cardiac ion channels and transporters that are critical to maintaining normal electromechanical functioning of the cardiomyocytes. The potential of using mitochondria-targeted antioxidants as a novel antiarrhythmia therapy is highlighted.
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Affiliation(s)
- Kai-Chien Yang
- Lifespan Cardiovascular Institute, Providence VA Medical Center, and Brown University, Providence, RI 02903, USA
| | - Marcelo G Bonini
- Department of Medicine/Cardiology, University of Illinois at Chicago, Chicago, IL 60612, USA; Department of Pathology, and University of Illinois at Chicago, Chicago, IL 60612, USA; Department of Pharmacology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Samuel C Dudley
- Lifespan Cardiovascular Institute, Providence VA Medical Center, and Brown University, Providence, RI 02903, USA.
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Abstract
Balancing inflammatory reactive oxygen species (ROS) production is essential for safely eliminating pathogenic microbes. The newly described protein Negative Regulator of ROS (NRROS) dampens ROS production by restricting NOX2 availability, and thus "cools-off" inflammation.
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Affiliation(s)
- Marcelo G Bonini
- 1] Department of Pharmacology, The University of Illinois College of Medicine, 835 South Wolcott Avenue, Chicago, IL 60612, USA [2] Department of Medicine, The University of Illinois College of Medicine, 835 South Wolcott Avenue, Chicago, IL 60612, USA [3] Department of Pathology, The University of Illinois College of Medicine, 835 South Wolcott Avenue, Chicago, IL 60612, USA
| | - Asrar B Malik
- 1] Department of Pharmacology, The University of Illinois College of Medicine, 835 South Wolcott Avenue, Chicago, IL 60612, USA [2] Center for Lung and Vascular Biology, The University of Illinois College of Medicine, 835 South Wolcott Avenue, Chicago, IL 60612, USA
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48
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Gong H, Gao X, Feng S, Siddiqui MR, Garcia A, Bonini MG, Komarova Y, Vogel SM, Mehta D, Malik AB. Evidence of a Common Mechanism of Disassembly of Adherens Junctions through Gα13 Targeting of VE-cadherin. J Gen Physiol 2014. [DOI: 10.1085/jgp.1434oia13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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49
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Bonini MG, Consolaro MEL, Hart PC, Mao M, de Abreu ALP, Master AM. Redox control of enzymatic functions: The electronics of life's circuitry. IUBMB Life 2014; 66:167-181. [PMID: 24668617 DOI: 10.1002/iub.1258] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 03/06/2014] [Indexed: 12/22/2022]
Abstract
The field of redox biology has changed tremendously over the past 20 years. Formerly regarded as bi-products of the aerobic metabolism exclusively involved in tissue damage, reactive oxygen species (ROS) are now recognized as active participants of cell signaling events in health and in disease. In this sense, ROS and the more recently defined reactive nitrogen species (RNS) are, just like hormones and second messengers, acting as fundamental orchestrators of cell signaling pathways. The chemical modification of enzymes by ROS and RNS (that result in functional enzymatic alterations) accounts for a considerable fraction of the transient and persistent perturbations imposed by variations in oxidant levels. Upregulation of ROS and RNS in response to stress is a common cellular response that foments adaptation to a variety of physiologic alterations (hypoxia, hyperoxia, starvation, and cytokine production). Frequently, these are beneficial and increase the organisms' resistance against subsequent acute stress (preconditioning). Differently, the sustained ROS/RNS-dependent rerouting of signaling produces irreversible alterations in cellular functioning, often leading to pathogenic events. Thus, the duration and reversibility of protein oxidations define whether complex organisms remain "electronically" healthy. Among the 20 essential amino acids, four are particularly susceptible to oxidation: cysteine, methionine, tyrosine, and tryptophan. Here, we will critically review the mechanisms, implications, and repair systems involved in the redox modifications of these residues in proteins while analyzing well-characterized prototypic examples. Occasionally, we will discuss potential consequences of amino acid oxidation and speculate on the biologic necessity for such events in the context of adaptative redox signaling. © 2014 IUBMB Life, 66(3):167-181, 2014.
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Affiliation(s)
- Marcelo G Bonini
- Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Department of Pharmacology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Programa de Biociencias Aplicadas a Farmacia (PBF), Universidade Estadual de Maringa, Maringa, Parana, Brazil
| | - Marcia E L Consolaro
- Programa de Biociencias Aplicadas a Farmacia (PBF), Universidade Estadual de Maringa, Maringa, Parana, Brazil
| | - Peter C Hart
- Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Mao Mao
- Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Department of Pharmacology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Andre Luelsdorf Pimenta de Abreu
- Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Department of Pharmacology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Programa de Biociencias Aplicadas a Farmacia (PBF), Universidade Estadual de Maringa, Maringa, Parana, Brazil
| | - Alyssa M Master
- Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Department of Pharmacology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
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50
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Gong H, Gao X, Feng S, Siddiqui MR, Garcia A, Bonini MG, Komarova Y, Vogel SM, Mehta D, Malik AB. Evidence of a Common Mechanism of Disassembly of Adherens Junctions through Gα13 Targeting of VE-cadherin. J Biophys Biochem Cytol 2014. [DOI: 10.1083/jcb.2046oia51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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