1
|
Neves RL, Marem A, Carmona B, Arata JG, Cyrillo Ramos MP, Justo GZ, Machado de Melo FH, Oliveira V, Icimoto MY. Expression of thimet oligopeptidase (THOP) modulated by oxidative stress in human multidrug resistant (MDR) leukemia cells. Biochimie 2023; 212:21-30. [PMID: 36997147 DOI: 10.1016/j.biochi.2023.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 03/03/2023] [Accepted: 03/27/2023] [Indexed: 03/30/2023]
Abstract
Thimet oligopeptidase (THOP) is a cytosolic metallopeptidase known to regulate the fate of post-proteasomal peptides, protein turnover and peptide selection in the antigen presentation machinery (APM) system. Oxidative stress influences THOP expression and regulates its proteolytic activity, generating variable cytosolic peptide levels, possibly affecting the immune evasion of tumor cells. In the present work, we examined the association between THOP expression/activity and stress oxidative resistance in human leukemia cells using the K562 cell line, a chronic myeloid leukemia (CML), and the multidrug-resistant (MDR) Lucena 1 (K562-derived MDR cell line) as model. The Lucena 1 phenotype was validated under vincristine treatment and the relative THOP1 mRNA levels and protein expression compared to K562 cell line. Our data demonstrated increased THOP1 gene and protein levels in K562 cells in contrast to the oxidative-resistant Lucena 1, even after H2O2 treatment, suggesting an oxidative stress dependence in THOP regulation. Further, it was observed higher basal levels of reactive oxygen species (ROS) in K562 compared to Lucena 1 cell line using DHE fluorescent probe. Since THOP activity is dependent on its oligomeric state, we also compared its proteolytic activity under reducing agent treatment, which demonstrated that its function modulation with respect to changes in redox state. Finally, the mRNA expression and FACS analyses demonstrated a reduced expression of MHC I only in K562 cell line. In conclusion, our results highlight THOP redox modulation, which could influence antigen presentation in multidrug resistant leukemia cells.
Collapse
Affiliation(s)
- Raquel Leão Neves
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Alyne Marem
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Bruno Carmona
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Júlia Galanakis Arata
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | | | - Giselle Zenker Justo
- Departamento de Bioquímica, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil; Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil
| | | | - Vitor Oliveira
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil.
| | - Marcelo Yudi Icimoto
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil; Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, Oregon Health and Science University, Portland, OR, United States.
| |
Collapse
|
2
|
Bekeschus S, Liebelt G, Menz J, Singer D, Wende K, Schmidt A. Cell cycle-related genes associate with sensitivity to hydrogen peroxide-induced toxicity. Redox Biol 2022; 50:102234. [PMID: 35063803 PMCID: PMC8783094 DOI: 10.1016/j.redox.2022.102234] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 12/31/2021] [Accepted: 01/11/2022] [Indexed: 12/12/2022] Open
Abstract
Reactive oxygen species (ROS) such as hydrogen peroxide (H2O2) are well-described agents in physiology and pathology. Chronic inflammation causes incessant H2O2 generation associated with disease occurrences such as diabetes, autoimmunity, and cancer. In cancer, conditioning of the tumor microenvironment, e.g., hypoxia and ROS generation, has been associated with disease outcomes and therapeutic efficacy. Many reports have investigated the roles of the action of H2O2 across many cell lines and disease models. The genes predisposing tumor cell lines to H2O2-mediated demise are less deciphered, however. To this end, we performed in-house transcriptional profiling of 35 cell lines and simultaneously investigated each cell line's H2O2 inhibitory concentration (IC25) based on metabolic activity. More than 100-fold differences were observed between the most resistant and sensitive cell lines. Correlation and gene ontology pathway analysis identified a rigid association with genes intertwined in cell cycle progression and proliferation, as such functional categories dominated the top ten significant processes. The ten most substantially correlating genes (Spearman r > 0.70 or < -0.70) were validated using qPCR, showing complete congruency with microarray analysis findings. Western blotting confirmed the correlation of cell cycle-related proteins negatively correlating with H2O2 IC25. Top genes related to ROS production or antioxidant defense were only modest in correlation (Spearman r > 0.40 or < -0.40). In conclusion, our in-house transcriptomic correlation analysis revealed a set of cell cycle-associated genes associated with a priori resistance or sensitivity to H2O2-induced cellular demise with the detailed and causative roles of individual genes remaining unclear.
Collapse
Affiliation(s)
- Sander Bekeschus
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany.
| | - Grit Liebelt
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany
| | - Jonas Menz
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany; Department of General, Visceral, Vascular, and Thorax Surgery, Greifswald University Medical Center, Felix-Hausdorff-Str. 2, 17475, Greifswald, Germany
| | - Debora Singer
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany
| | - Kristian Wende
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany
| | - Anke Schmidt
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany
| |
Collapse
|
3
|
Sun W, Zhu J, Li S, Tang C, Zhao Q, Zhang J. Selenium supplementation protects against oxidative stress-induced cardiomyocyte cell cycle arrest through activation of PI3K/AKT. Metallomics 2020; 12:1965-1978. [PMID: 33237045 DOI: 10.1039/d0mt00225a] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Oxidative stress significantly contributes to heart disease, and thus might be a promising target for ameliorating heart failure. Mounting evidence suggests that selenium has chemotherapeutic potential for treating heart disease due to its regulation of selenoproteins, which play antioxidant regulatory roles. Oxidative stress-induced cardiomyocyte cell cycle arrest contributes to the loss of cardiomyocytes during heart failure. The protective effects and mechanism of selenium against oxidative stress-induced cell cycle arrest in cardiomyocytes warrant further study. H9c2 rat cardiomyoblast cells were treated with hydrogen peroxide in the presence or absence of selenium supplementation. Na2SeO3 pretreatment alleviated H2O2-induced oxidative stress, increased thioredoxin reductase (TXNRD) activity and glutathione peroxidase (GPx) activity and counteracted the H2O2-induced cell cycle arrest at the S phase. These effects were accompanied by attenuation of the H2O2-induced strengthening of the G2/M-phase inhibitory system, including increased mRNA and protein levels of cyclin-dependent kinase 1 (CDK1) and decreased p21 mRNA levels. Notably, Na2SeO3 pretreatment activated the PI3K/AKT signaling pathway, and inhibition of PI3K counteracted the protective effects of selenium on H2O2-induced cell cycle arrest. We corroborated our findings in vivo by inducing oxidative stress in pig heart by feeding a selenium deficient diet, which decreased the TXNRD activity, inactivated PI3K/AKT signaling and strengthened the G2/M-phase inhibitory system. We concluded that the cardioprotective effects of selenium supplementation against oxidative stress-induced cell cycle arrest in cardiomyocytes might be mediated by the selenoprotein-associated (GPx and TXNRD) antioxidant capacity, thereby activating redox status-associated PI3K/AKT pathways, which promote cell cycle progression by targeting the G2/M phase inhibitory system. This study provides new insight into the underlying mechanisms of cardioprotection effects of selenium at the cellular level.
Collapse
Affiliation(s)
- Wenjuan Sun
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | | | | | | | | | | |
Collapse
|
4
|
Wang GF, Dong Q, Bai Y, Yuan J, Xu Q, Cao C, Liu X. Oxidative stress induces mitotic arrest by inhibiting Aurora A-involved mitotic spindle formation. Free Radic Biol Med 2017; 103:177-187. [PMID: 28017898 DOI: 10.1016/j.freeradbiomed.2016.12.031] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 12/05/2016] [Accepted: 12/21/2016] [Indexed: 01/11/2023]
Abstract
Oxidative stress contributes to the oxidative modification of cellular components, including lipids, proteins and DNA, and results in DNA damage, cell cycle arrest, cellular dysfunction and apoptosis. However, the mechanism underlying oxidative stress-induced mitotic abnormalities is not fully understood. In this study, we demonstrated that exogenous and endogenous reactive oxygen species (ROS) promoted mitotic arrest. Delayed formation and abnormal function of the mitotic spindle, which directly impeded mitosis and promoted abnormal chromosome separation, was responsible for ROS-induced mitotic arrest. As a key regulator of mitotic spindle assembly, Aurora A kinase was hyperphosphorylated in early mitosis under oxidative stress, which may disturb the function of Aurora A in mitotic spindle formation. Our findings identified a mechanism by which ROS regulate mitotic progression and indicated a potential molecular target for the treatment of oxidative stress-related diseases.
Collapse
Affiliation(s)
- Guang-Fei Wang
- Key Laboratory of Cell Proliferation and Regulation Biology, College of Life Sciences, Beijing Normal University, 19 Xinjiekouwai Avenue, Beijing 100875, China
| | - Qincai Dong
- Beijing Institute of Biotechnology, 27 Taiping Rd, Haidian District, Beijing 100850, China
| | - Yuanyuan Bai
- Beijing Institute of Biotechnology, 27 Taiping Rd, Haidian District, Beijing 100850, China
| | - Jing Yuan
- Beijing Institute of Disease Control and Prevention, Beijing 100071, China
| | - Quanbin Xu
- Beijing Institute of Biotechnology, 27 Taiping Rd, Haidian District, Beijing 100850, China
| | - Cheng Cao
- Beijing Institute of Biotechnology, 27 Taiping Rd, Haidian District, Beijing 100850, China.
| | - Xuan Liu
- Beijing Institute of Biotechnology, 27 Taiping Rd, Haidian District, Beijing 100850, China.
| |
Collapse
|