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  1. Article ; Online: Homeostatic Roles of STING in Cell Proliferation and Chromosomal Instability.

    Gius, David / Zhu, Yueming

    Cancer research

    2019  Volume 79, Issue 7, Page(s) 1295–1296

    Abstract: In this issue ... ...

    Abstract In this issue of
    MeSH term(s) Animals ; Cell Proliferation ; Cell Transformation, Neoplastic/genetics ; Chromosomal Instability ; Membrane Proteins/genetics ; Mice ; Neoplasms/genetics
    Chemical Substances Membrane Proteins
    Language English
    Publishing date 2019-02-06
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 1432-1
    ISSN 1538-7445 ; 0008-5472
    ISSN (online) 1538-7445
    ISSN 0008-5472
    DOI 10.1158/0008-5472.CAN-19-0212
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Glycogen Phosphorylase: A Novel Biomarker in Doxorubicin-Induced Cardiac Injury.

    Zhu, Yueming / Gius, David

    Clinical cancer research : an official journal of the American Association for Cancer Research

    2018  Volume 24, Issue 7, Page(s) 1516–1517

    Abstract: Extracellular vesicles containing glycogen phosphorylase, brain/heart (PYGB) have been demonstrated as a sensitive biomarker for normal cardiac injuries for patients after chemotherapy. Oxidative stress was suggested to be the mechanism behind the ... ...

    Abstract Extracellular vesicles containing glycogen phosphorylase, brain/heart (PYGB) have been demonstrated as a sensitive biomarker for normal cardiac injuries for patients after chemotherapy. Oxidative stress was suggested to be the mechanism behind the chemotherapy-induced tissue damage and augmented with mitochondrial antioxidant could be an effective means of early intervention.
    MeSH term(s) Animals ; Biomarkers ; Doxorubicin ; Extracellular Vesicles ; Glycogen Phosphorylase ; Humans ; Mice ; Myocytes, Cardiac/drug effects
    Chemical Substances Biomarkers ; Doxorubicin (80168379AG) ; Glycogen Phosphorylase (EC 2.4.1.-)
    Language English
    Publishing date 2018-01-22
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 1225457-5
    ISSN 1557-3265 ; 1078-0432
    ISSN (online) 1557-3265
    ISSN 1078-0432
    DOI 10.1158/1078-0432.CCR-17-3276
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Manganese Superoxide Dismutase Acetylation and Regulation of Protein Structure in Breast Cancer Biology and Therapy.

    Ogle, Meredith M / Trevino, Rolando / Schell, Joseph / Varmazyad, Mahboubeh / Horikoshi, Nobuo / Gius, David

    Antioxidants (Basel, Switzerland)

    2022  Volume 11, Issue 4

    Abstract: The loss and/or dysregulation of several cellular and mitochondrial antioxidants' expression or enzymatic activity, which leads to the aberrant physiological function of these proteins, has been shown to result in oxidative damage to cellular ... ...

    Abstract The loss and/or dysregulation of several cellular and mitochondrial antioxidants' expression or enzymatic activity, which leads to the aberrant physiological function of these proteins, has been shown to result in oxidative damage to cellular macromolecules. In this regard, it has been surmised that the disruption of mitochondrial networks responsible for maintaining normal metabolism is an established hallmark of cancer and a novel mechanism of therapy resistance. This altered metabolism leads to aberrant accumulation of reactive oxygen species (ROS), which, under specific physiological conditions, leads to a potential tumor-permissive cellular environment. In this regard, it is becoming increasingly clear that the loss or disruption of mitochondrial oxidant scavenging enzymes may be, in specific tumors, either an early event in transformation or exhibit tumor-promoting properties. One example of such an antioxidant enzyme is manganese superoxide dismutase (MnSOD, also referred to as SOD2), which detoxifies superoxide, a ROS that has been shown, when its normal physiological levels are disrupted, to lead to oncogenicity and therapy resistance. Here, we will also discuss how the acetylation of MnSOD leads to a change in detoxification function that leads to a cellular environment permissive for the development of lineage plasticity-like properties that may be one mechanism leading to tumorigenic and therapy-resistant phenotypes.
    Language English
    Publishing date 2022-03-25
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2704216-9
    ISSN 2076-3921
    ISSN 2076-3921
    DOI 10.3390/antiox11040635
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Coordinated Specialty Care Discharge, Transition, and Step-Down Policies, Practices, and Concerns: Staff and Client Perspectives.

    Jones, Nev / Gius, Becky / Daley, Tamara / George, Preethy / Rosenblatt, Abram / Shern, David

    Psychiatric services (Washington, D.C.)

    2020  Volume 71, Issue 5, Page(s) 487–497

    Abstract: Objective: In recent years, optimizing the process of transition and discharge from coordinated specialty care (CSC), a program that provides early intervention in psychosis, has emerged as an important focus area for program administrators, clinicians, ...

    Abstract Objective: In recent years, optimizing the process of transition and discharge from coordinated specialty care (CSC), a program that provides early intervention in psychosis, has emerged as an important focus area for program administrators, clinicians, and policy makers. To explore existing CSC policies and practices and to understand frontline provider and client views on discharge, the authors conducted a comprehensive analysis of staff and client interview data from the Mental Health Block Grant 10% Set-Aside Study.
    Methods: Data from 66 interviews with groups of CSC providers and administrators representing 36 sites and 22 states were analyzed, as well as data from interviews with 82 CSC clients at 34 sites. Transcripts were coded by using systematic content analyses.
    Results: Analyses of data from providers and administrators showed the heterogeneity of CSC program practices and strategies regarding discharge and highlighted a range of concerns related to postdischarge service accessibility and quality. Analysis of data from client interviews reflected the heterogeneity of transition challenges that clients confront. A significant number of participants reported concerns about their readiness for discharge.
    Conclusions: CSC discharge policies and practices vary across CSC programs and states. Frequent clinician and client concerns about optimal program length, transition, and postdischarge services highlight the importance of sustained policy and research efforts to develop evidence-informed practice guidelines and possible modifications to the time-limited CSC model that currently dominates the field.
    MeSH term(s) Adolescent ; Adult ; Aftercare ; Attitude of Health Personnel ; Female ; Health Policy ; Humans ; Interviews as Topic ; Longitudinal Studies ; Male ; Mental Health Services ; Patient Acceptance of Health Care ; Patient Discharge ; Program Development ; Psychotic Disorders/therapy ; Qualitative Research ; United States ; Young Adult
    Language English
    Publishing date 2020-03-19
    Publishing country United States
    Document type Journal Article ; Multicenter Study ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 1220173-x
    ISSN 1557-9700 ; 1075-2730
    ISSN (online) 1557-9700
    ISSN 1075-2730
    DOI 10.1176/appi.ps.201900514
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: MnSOD Lysine 68 acetylation leads to cisplatin and doxorubicin resistance due to aberrant mitochondrial metabolism.

    Gao, Yucheng / Zhu, Yueming / Tran, Elizabeth L / Tokars, Valerie / Dean, Angela E / Quan, Songhua / Gius, David

    International journal of biological sciences

    2021  Volume 17, Issue 5, Page(s) 1203–1216

    Abstract: Manganese superoxide dismutase (MnSOD) acetylation (Ac) has been shown to be a key post-translational modification important in the regulation of detoxification activity in various disease models. We have previously demonstrated that MnSOD lysine-68 (K68) ...

    Abstract Manganese superoxide dismutase (MnSOD) acetylation (Ac) has been shown to be a key post-translational modification important in the regulation of detoxification activity in various disease models. We have previously demonstrated that MnSOD lysine-68 (K68) acetylation (K68-Ac) leads to a change in function from a superoxide-scavenging homotetramer to a peroxidase-directed monomer. Here, we found that estrogen receptor positive (ER+) breast cancer cell lines (MCF7 and T47D), selected for continuous growth in cisplatin (CDDP) and doxorubicin (DXR), exhibited an increase in MnSOD-K68-Ac. In addition, MnSOD-K68-Ac, as modeled by the expression of a validated acetylation mimic mutant gene (
    MeSH term(s) Acetylation ; Animals ; Antineoplastic Agents/pharmacology ; Breast Neoplasms/drug therapy ; Breast Neoplasms/metabolism ; Carcinogenesis/drug effects ; Carcinogenesis/metabolism ; Cell Line, Tumor ; Cisplatin/pharmacology ; Doxorubicin/pharmacology ; Drug Resistance, Neoplasm ; Free Radical Scavengers/metabolism ; Humans ; Inactivation, Metabolic ; MCF-7 Cells ; Mice ; Mitochondria/drug effects ; Mitochondria/metabolism ; Protein Processing, Post-Translational ; Sirtuins/metabolism ; Superoxide Dismutase/metabolism
    Chemical Substances Antineoplastic Agents ; Free Radical Scavengers ; Doxorubicin (80168379AG) ; Superoxide Dismutase (EC 1.15.1.1) ; Sirtuins (EC 3.5.1.-) ; Cisplatin (Q20Q21Q62J)
    Language English
    Publishing date 2021-03-19
    Publishing country Australia
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2179208-2
    ISSN 1449-2288 ; 1449-2288
    ISSN (online) 1449-2288
    ISSN 1449-2288
    DOI 10.7150/ijbs.51184
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Redox-sensitive signaling factors and antioxidants: how tumor cells respond to ionizing radiation.

    Gius, David

    The Journal of nutrition

    2003  Volume 134, Issue 11, Page(s) 3213S–3214S

    MeSH term(s) Antioxidants/pharmacology ; Cysteine/chemistry ; Cysteine/physiology ; DNA Damage ; Free Radicals ; Humans ; Hydrogen Peroxide/pharmacology ; Neoplasms/radiotherapy ; Oxidation-Reduction ; Oxidative Stress ; Radiation, Ionizing ; Signal Transduction ; Thioredoxin-Disulfide Reductase/metabolism ; Thioredoxins/chemistry ; Thioredoxins/metabolism
    Chemical Substances Antioxidants ; Free Radicals ; Thioredoxins (52500-60-4) ; Hydrogen Peroxide (BBX060AN9V) ; Thioredoxin-Disulfide Reductase (EC 1.8.1.9) ; Cysteine (K848JZ4886)
    Language English
    Publishing date 2003-05-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 218373-0
    ISSN 1541-6100 ; 0022-3166
    ISSN (online) 1541-6100
    ISSN 0022-3166
    DOI 10.1093/jn/134.11.3213S
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: An engineered chimeric toxin that cleaves activated mutant and wild-type RAS inhibits tumor growth.

    Vidimar, Vania / Beilhartz, Greg L / Park, Minyoung / Biancucci, Marco / Kieffer, Matthew B / Gius, David R / Melnyk, Roman A / Satchell, Karla J F

    Proceedings of the National Academy of Sciences of the United States of America

    2020  Volume 117, Issue 29, Page(s) 16938–16948

    Abstract: Despite nearly four decades of effort, broad inhibition of oncogenic RAS using small-molecule approaches has proven to be a major challenge. Here we describe the development of a pan-RAS biologic inhibitor composed of the RAS-RAP1-specific endopeptidase ... ...

    Abstract Despite nearly four decades of effort, broad inhibition of oncogenic RAS using small-molecule approaches has proven to be a major challenge. Here we describe the development of a pan-RAS biologic inhibitor composed of the RAS-RAP1-specific endopeptidase fused to the protein delivery machinery of diphtheria toxin. We show that this engineered chimeric toxin irreversibly cleaves and inactivates intracellular RAS at low picomolar concentrations terminating downstream signaling in receptor-bearing cells. Furthermore, we demonstrate in vivo target engagement and reduction of tumor burden in three mouse xenograft models driven by either wild-type or mutant
    MeSH term(s) Animals ; Antineoplastic Agents/therapeutic use ; Cells, Cultured ; Diphtheria Toxin/chemistry ; Diphtheria Toxin/genetics ; Diphtheria Toxin/metabolism ; Endopeptidases/chemistry ; Endopeptidases/genetics ; Endopeptidases/metabolism ; Female ; HCT116 Cells ; Humans ; Male ; Mice ; Mice, Nude ; Mutation ; Neoplasms, Experimental/drug therapy ; Protein Sorting Signals ; Proteolysis ; Recombinant Proteins/therapeutic use ; rap1 GTP-Binding Proteins/metabolism ; ras Proteins/genetics ; ras Proteins/metabolism
    Chemical Substances Antineoplastic Agents ; Diphtheria Toxin ; Protein Sorting Signals ; Recombinant Proteins ; Endopeptidases (EC 3.4.-) ; Rap1 protein, mouse (EC 3.6.5.2) ; rap1 GTP-Binding Proteins (EC 3.6.5.2) ; ras Proteins (EC 3.6.5.2)
    Language English
    Publishing date 2020-07-02
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.2000312117
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  8. Article ; Online: Regulation of KLF4 by posttranslational modification circuitry in endocrine resistance.

    Zhou, Zhuan / Song, Xinxin / Chi, Junlong Jack / Gius, David R / Huang, Yi / Cristofanilli, Massimo / Wan, Yong

    Cellular signalling

    2020  Volume 70, Page(s) 109574

    Abstract: KLF4 plays an important role in orchestrating a variety of cellular events, including cell-fate decision, genome stability and apoptosis. Its deregulation is correlated with human diseases such as breast cancer and gastrointestinal cancer. Results from ... ...

    Abstract KLF4 plays an important role in orchestrating a variety of cellular events, including cell-fate decision, genome stability and apoptosis. Its deregulation is correlated with human diseases such as breast cancer and gastrointestinal cancer. Results from recent biochemical studies have revealed that KLF4 is tightly regulated by posttranslational modifications. Here we report a new finding that KLF4 orchestrates estrogen receptor signaling and facilitates endocrine resistance. We also uncovered the underlying mechanism that alteration of KLF4 by posttranslational modifications such as phosphorylation and ubiquitylation changes tumor cell response to endocrine therapy drugs. IHC analyses using based on human breast cancer specimens showed the accumulation of KLF4 protein in ER-positive breast cancer tissues. Elevated KLF4 expression significantly correlated with prognosis and endocrine resistance. Our drug screening for suppressing KLF4 protein expression led to identification of Src kinase to be a critical player in modulating KLF4-mediated tamoxifen resistance. Depletion of VHL (von Hippel-Lindau tumor suppressor), a ubiquitin E3 ligase for KLF4, reduces tumor cell sensitivity to tamoxifen. We demonstrated phosphorylation of VHL by Src enhances proteolysis of VHL that in turn leads to upregulation of KLF4 and increases endocrine resistance. Suppression of Src-VHL-KLF4 cascade by Src inhibitor or enhancement of VHL-KLF4 ubiquitination by TAT-KLF4 (371-420AAa) peptides re-sensitizes tamoxifen-resistant breast cancer cells to tamoxifen treatment. Taken together, our findings demonstrate a novel role for KLF4 in modulating endocrine resistance via the Src-VHL-KLF4 axis.
    MeSH term(s) Breast Neoplasms/metabolism ; Drug Resistance, Neoplasm ; Gene Expression Regulation, Neoplastic ; HEK293 Cells ; Humans ; Kruppel-Like Factor 4 ; Kruppel-Like Transcription Factors/physiology ; MCF-7 Cells ; Von Hippel-Lindau Tumor Suppressor Protein/metabolism
    Chemical Substances KLF4 protein, human ; Kruppel-Like Factor 4 ; Kruppel-Like Transcription Factors ; Von Hippel-Lindau Tumor Suppressor Protein (EC 2.3.2.27) ; VHL protein, human (EC 6.3.2.-)
    Language English
    Publishing date 2020-02-19
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 1002702-6
    ISSN 1873-3913 ; 0898-6568
    ISSN (online) 1873-3913
    ISSN 0898-6568
    DOI 10.1016/j.cellsig.2020.109574
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  9. Article ; Online: SIRT3 Overexpression Ameliorates Asbestos-Induced Pulmonary Fibrosis, mt-DNA Damage, and Lung Fibrogenic Monocyte Recruitment.

    Cheresh, Paul / Kim, Seok-Jo / Jablonski, Renea / Watanabe, Satoshi / Lu, Ziyan / Chi, Monica / Helmin, Kathryn A / Gius, David / Budinger, G R Scott / Kamp, David W

    International journal of molecular sciences

    2021  Volume 22, Issue 13

    Abstract: Alveolar epithelial cell (AEC) mitochondrial (mt) DNA damage and fibrotic monocyte-derived alveolar macrophages (Mo-AMs) are implicated in the pathobiology of pulmonary fibrosis. We showed that sirtuin 3 (SIRT3), a mitochondrial protein regulating cell ... ...

    Abstract Alveolar epithelial cell (AEC) mitochondrial (mt) DNA damage and fibrotic monocyte-derived alveolar macrophages (Mo-AMs) are implicated in the pathobiology of pulmonary fibrosis. We showed that sirtuin 3 (SIRT3), a mitochondrial protein regulating cell fate and aging, is deficient in the AECs of idiopathic pulmonary fibrosis (IPF) patients and that asbestos- and bleomycin-induced lung fibrosis is augmented in Sirt3 knockout (
    MeSH term(s) Animals ; Asbestos/adverse effects ; Biomarkers ; DNA Damage ; DNA, Mitochondrial ; Disease Models, Animal ; Gene Expression ; Humans ; Idiopathic Pulmonary Fibrosis/etiology ; Idiopathic Pulmonary Fibrosis/metabolism ; Idiopathic Pulmonary Fibrosis/pathology ; Immunohistochemistry ; Mice ; Mice, Transgenic ; Mitochondria/genetics ; Mitochondria/metabolism ; Monocytes/immunology ; Monocytes/metabolism ; Monocytes/pathology ; Oxidative Stress ; Sirtuin 3/genetics ; Sirtuin 3/metabolism
    Chemical Substances Biomarkers ; DNA, Mitochondrial ; Asbestos (1332-21-4) ; SIRT3 protein, human (EC 3.5.1.-) ; Sirtuin 3 (EC 3.5.1.-)
    Language English
    Publishing date 2021-06-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms22136856
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  10. Article ; Online: Emerging evidence for targeting mitochondrial metabolic dysfunction in cancer therapy.

    Zhu, Yueming / Dean, Angela Elizabeth / Horikoshi, Nobuo / Heer, Collin / Spitz, Douglas R / Gius, David

    The Journal of clinical investigation

    2018  Volume 128, Issue 9, Page(s) 3682–3691

    Abstract: Mammalian cells use a complex network of redox-dependent processes necessary to maintain cellular integrity during oxidative metabolism, as well as to protect against and/or adapt to stress. The disruption of these redox-dependent processes, including ... ...

    Abstract Mammalian cells use a complex network of redox-dependent processes necessary to maintain cellular integrity during oxidative metabolism, as well as to protect against and/or adapt to stress. The disruption of these redox-dependent processes, including those in the mitochondria, creates a cellular environment permissive for progression to a malignant phenotype and the development of resistance to commonly used anticancer agents. An extension of this paradigm is that when these mitochondrial functions are altered by the events leading to transformation and ensuing downstream metabolic processes, they can be used as molecular biomarkers or targets in the development of new therapeutic interventions to selectively kill and/or sensitize cancer versus normal cells. In this Review we propose that mitochondrial oxidative metabolism is altered in tumor cells, and the central theme of this dysregulation is electron transport chain activity, folate metabolism, NADH/NADPH metabolism, thiol-mediated detoxification pathways, and redox-active metal ion metabolism. It is proposed that specific subgroups of human malignancies display distinct mitochondrial transformative and/or tumor signatures that may benefit from agents that target these pathways.
    MeSH term(s) Animals ; Female ; Gene Expression ; Humans ; Male ; Mitochondria/metabolism ; Mitochondrial Proteins/metabolism ; Models, Biological ; NAD/metabolism ; NADP/metabolism ; Neoplasms/genetics ; Neoplasms/metabolism ; Neoplasms/therapy ; Oxidation-Reduction ; Oxidative Stress ; Protein Transport ; Signal Transduction ; Sirtuins/metabolism
    Chemical Substances Mitochondrial Proteins ; NAD (0U46U6E8UK) ; NADP (53-59-8) ; Sirtuins (EC 3.5.1.-)
    Language English
    Publishing date 2018-08-31
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 3067-3
    ISSN 1558-8238 ; 0021-9738
    ISSN (online) 1558-8238
    ISSN 0021-9738
    DOI 10.1172/JCI120844
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