1
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Kim R, Kin T, Beck WT. Impact of Complex Apoptotic Signaling Pathways on Cancer Cell Sensitivity to Therapy. Cancers (Basel) 2024; 16:984. [PMID: 38473345 DOI: 10.3390/cancers16050984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 02/25/2024] [Accepted: 02/27/2024] [Indexed: 03/14/2024] Open
Abstract
Anticancer drugs induce apoptotic and non-apoptotic cell death in various cancer types. The signaling pathways for anticancer drug-induced apoptotic cell death have been shown to differ between drug-sensitive and drug-resistant cells. In atypical multidrug-resistant leukemia cells, the c-Jun/activator protein 1 (AP-1)/p53 signaling pathway leading to apoptotic death is altered. Cancer cells treated with anticancer drugs undergo c-Jun/AP-1-mediated apoptotic death and are involved in c-Jun N-terminal kinase activation and growth arrest- and DNA damage-inducible gene 153 (Gadd153)/CCAAT/enhancer-binding protein homologous protein pathway induction, regardless of the p53 genotype. Gadd153 induction is associated with mitochondrial membrane permeabilization after anticancer drug treatment and involves a coupled endoplasmic reticulum stress response. The induction of apoptosis by anticancer drugs is mediated by the intrinsic pathway (cytochrome c, Cyt c) and subsequent activation of the caspase cascade via proapoptotic genes (e.g., Bax and Bcl-xS) and their interactions. Anticancer drug-induced apoptosis involves caspase-dependent and caspase-independent pathways and occurs via intrinsic and extrinsic pathways. The targeting of antiapoptotic genes such as Bcl-2 enhances anticancer drug efficacy. The modulation of apoptotic signaling by Bcl-xS transduction increases the sensitivity of multidrug resistance-related protein-overexpressing epidermoid carcinoma cells to anticancer drugs. The significance of autophagy in cancer therapy remains to be elucidated. In this review, we summarize current knowledge of cancer cell death-related signaling pathways and their alterations during anticancer drug treatment and discuss potential strategies to enhance treatment efficacy.
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Affiliation(s)
- Ryungsa Kim
- Department of Breast Surgery, Hiroshima Mark Clinic, 1-4-3F, 2-Chome Ohte-machi, Naka-ku, Hiroshima 730-0051, Japan
| | - Takanori Kin
- Department of Breast and Endocrine Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - William T Beck
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
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2
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Mularoni V, Donati B, Tameni A, Manicardi V, Reggiani F, Sauta E, Zanelli M, Tigano M, Vitale E, Torricelli F, Ascani S, Martino G, Inghirami G, Sanguedolce F, Ruffini A, Bavieri A, Luminari S, Pizzi M, Dei Tos AP, Fesce C, Neri A, Ciarrocchi A, Fragliasso V. Long non-coding RNA mitophagy and ALK-negative anaplastic lymphoma-associated transcript: a novel regulator of mitophagy in T-cell lymphoma. Haematologica 2023; 108:3333-3346. [PMID: 37381763 PMCID: PMC10690924 DOI: 10.3324/haematol.2022.282552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 06/20/2023] [Indexed: 06/30/2023] Open
Abstract
Long non-coding RNA (lncRNA) are emerging as powerful and versatile regulators of transcriptional programs and distinctive biomarkers of progression of T-cell lymphoma. Their role in the aggressive anaplastic lymphoma kinase-negative (ALK-) subtype of anaplastic large cell lymphoma (ALCL) has been elucidated only in part. Starting from our previously identified ALCL-associated lncRNA signature and performing digital gene expression profiling of a retrospective cohort of ALCL, we defined an 11 lncRNA signature able to discriminate among ALCL subtypes. We selected a not previously characterized lncRNA, MTAAT, with preferential expression in ALK- ALCL, for molecular and functional studies. We demonstrated that lncRNA MTAAT contributes to an aberrant mitochondrial turnover restraining mitophagy and promoting cellular proliferation. Functionally, lncRNA MTAAT acts as a repressor of a set of genes related to mitochondrial quality control via chromatin reorganization. Collectively, our work demonstrates the transcriptional role of lncRNA MTAAT in orchestrating a complex transcriptional program sustaining the progression of ALK- ALCL.
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Affiliation(s)
- Valentina Mularoni
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia
| | - Benedetta Donati
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia
| | - Annalisa Tameni
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia
| | - Veronica Manicardi
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia
| | - Francesca Reggiani
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia
| | - Elisabetta Sauta
- IRCCS Humanitas Clinical and Research Center, via Manzoni 56, 20089, Rozzano, Milan
| | - Magda Zanelli
- Pathology Unit, Department of Oncology, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Reggio Emilia, 42123
| | - Marco Tigano
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, 19144
| | - Emanuele Vitale
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia, Italy; Clinical and Experimental Medicine Ph.D. Program, University of Modena and Reggio Emilia, Modena, 41125
| | - Federica Torricelli
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia
| | - Stefano Ascani
- Pathology Unit, Azienda Ospedaliera Santa Maria di Terni, University of Perugia, 05100 Terni
| | - Giovanni Martino
- Pathology Unit, Azienda Ospedaliera Santa Maria di Terni, University of Perugia, 05100 Terni, Italy; Institute of Hematology and CREO, University of Perugia, Perugia 06129
| | - Giorgio Inghirami
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10065
| | | | - Alessia Ruffini
- Hematology Unit, Azienda USL-IRCCS di Reggio Emilia, 42123 Reggio Emilia
| | - Alberto Bavieri
- Hematology Unit, Azienda USL-IRCCS di Reggio Emilia, 42123 Reggio Emilia
| | - Stefano Luminari
- Hematology Unit, Azienda USL-IRCCS di Reggio Emilia, 42123 Reggio Emilia
| | - Marco Pizzi
- Surgical Pathology and Cytopathology Unit, Department of Medicine-DIMED, University of Padova, 35128 Padova
| | - Angelo Paolo Dei Tos
- Surgical Pathology and Cytopathology Unit, Department of Medicine-DIMED, University of Padova, 35128 Padova
| | - Cinzia Fesce
- Hematology Unit, University Hospital, 71122 Foggia
| | - Antonino Neri
- Scientific Directorate, Azienda USL-IRCCS di Reggio Emilia, Viale Umberto I 50, 42123, Reggio Emilia
| | - Alessia Ciarrocchi
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia
| | - Valentina Fragliasso
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia.
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3
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Meng J, Du H, Lu J, Wang H. Construction and validation of a predictive nomogram for ferroptosis-related genes in osteosarcoma. J Cancer Res Clin Oncol 2023; 149:14227-14239. [PMID: 37555953 DOI: 10.1007/s00432-023-05225-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 07/28/2023] [Indexed: 08/10/2023]
Abstract
BACKGROUND Ferroptosis is a new type of cellular regulation of necrosis that has attracted great attention in recent years, which is different from the traditional mode of autophagy, apoptosis, and necrosis. Studies suggest that ferroptosis is key to the occurrence and development of tumors. METHODS Here, we investigated the prognostic significance of ferroptosis-related genes (FRGs) in osteosarcoma (OS) using RNA transcriptome data from 88 OS samples collected from the UCSC Xena platform. We defined the OS sample from the UCSC platform as the training cohort and the GEO dataset (GSE21257 and GSE16091) as the validation cohorts. We assessed 73 up-regulated and 63 down-regulated FRGs. We divided patients from the UCSC database into groups at high risk and low risk and built a prognostic risk model to assess prognosis using five FRGs: MT1G, G6PD, ARNTL, BNIP3, and SQLE. RESULTS High-risk OS patients presented a lower survival rate. These results were confirmed in the validation groups. In the training group, the areas under the ROC curves (AUC) were as follows: 0.880 for 1 year, 0.833 for 3 years, and 0.818 for 5 years. In the GSE21257 validation cohort, the AUC were as follows: 0.770 for 1 year, 0.641 for 3 years, and 0.632 for 5 years survival, and in the GSE16091 were 0.729 for 1 year, 0.663 for 3 years, and 0.735 for 5 years survival. CONCLUSIONS These findings suggest that FRGs are associated with the prognosis of osteosarcoma. Moreover, our prognostic risk model can predict overall survival in osteosarcoma. This provides new ideas for the clinical diagnosis and personalized treatment of osteosarcoma.
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Affiliation(s)
- Jinzhi Meng
- Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Huawei Du
- Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jinfeng Lu
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Hongtao Wang
- Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
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4
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Field JT, Gordon JW. BNIP3 and Nix: Atypical regulators of cell fate. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2022; 1869:119325. [PMID: 35863652 DOI: 10.1016/j.bbamcr.2022.119325] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 06/17/2022] [Accepted: 07/05/2022] [Indexed: 11/27/2022]
Abstract
Since their discovery nearly 25 years ago, the BCL-2 family members BNIP3 and BNIP3L (aka Nix) have been labelled 'atypical'. Originally, this was because BNIP3 and Nix have divergent BH3 domains compared to other BCL-2 proteins. In addition, this atypical BH3 domain is dispensable for inducing cell death, which is also unusual for a 'death gene'. Instead, BNIP3 and Nix utilize a transmembrane domain, which allows for dimerization and insertion into and through organelle membranes to elicit cell death. Much has been learned regarding the biological function of these two atypical death genes, including their role in metabolic stress, where BNIP3 is responsive to hypoxia, while Nix responds variably to hypoxia and is also down-stream of PKC signaling and lipotoxic stress. Interestingly, both BNIP3 and Nix respond to signals related to cell atrophy. In addition, our current view of regulated cell death has expanded to include forms of necrosis such as necroptosis, pyroptosis, ferroptosis, and permeability transition-mediated cell death where BNIP3 and Nix have been shown to play context- and cell-type specific roles. Perhaps the most intriguing discoveries in recent years are the results demonstrating roles for BNIP3 and Nix outside of the purview of death genes, such as regulation of proliferation, differentiation/maturation, mitochondrial dynamics, macro- and selective-autophagy. We provide a historical and unbiased overview of these 'death genes', including new information related to alternative splicing and post-translational modification. In addition, we propose to redefine these two atypical members of the BCL-2 family as versatile regulators of cell fate.
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Affiliation(s)
- Jared T Field
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Science, University of Manitoba, Canada; The Diabetes Research Envisioned and Accomplished in Manitoba (DREAM) Theme of the Children's Hospital Research Institute of Manitoba, Winnipeg, Canada
| | - Joseph W Gordon
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Science, University of Manitoba, Canada; College of Nursing, Rady Faculty of Health Science, University of Manitoba, Canada; The Diabetes Research Envisioned and Accomplished in Manitoba (DREAM) Theme of the Children's Hospital Research Institute of Manitoba, Winnipeg, Canada.
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5
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Bharti A, Kar AG, Singh D, Ansari MA, Tewari M, Narayan G, Singh S. Frequent promoter hypermethylation and down regulation of BNIP3: An early event during gallbladder cancer progression. Dig Liver Dis 2022; 54:1257-1263. [PMID: 35093273 DOI: 10.1016/j.dld.2022.01.121] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 12/18/2021] [Accepted: 01/05/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND Epigenetic alterations have been reported as one of the risk factors of gallbladder cancer. Promoter hypermethylation is associated with high incidence and poor prognosis of GBC. Bcl-2/adenovirus E1B 19 kDa interacting protein 3 is a pro-apoptotic protein member of Bcl-2 family. AIMS Present study was aimed to investigate expression profile and promoter methylation status of BNIP3 in GBC and its correlation with clinico-pathological parameters. METHODS The expression analysis and methylation status of BNIP3 was performed by semi-quantitative reverse transcription polymerase chain reaction and Methylation-specific polymerase chain reaction respectively in 84 GBC patients and 29 gallstone tissues (used as normal controls). RESULTS We demonstrate down regulation of BNIP3 in 56% of the GBC samples. BNIP3 promoter is also frequently hypermethylated (69%) in GBC samples. Interestingly, we found that 69% (40/58) of the BNIP3 promoter hypermethylated samples had also reduced expression of BNIP3. Our data demonstrate significant correlation of the mRNA expression and promoter hypermethylation with late stage and nodal metastasis. Hypermethylation of BNIP3 promoter is associated with low overall survival period. CONCLUSION Our results suggest that promoter hypermethylation is an early event and can be a frequent mechanism for downregulation of BNIP3 in GBC.
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Affiliation(s)
- Amisha Bharti
- Department of Zoology, Mahila Mahavidyalaya, Banaras Hindu University, Varanasi, 221005, India
| | - Amrita Ghosh Kar
- Department of Pathology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Deepika Singh
- Deparment of Molecular and Human Genetics, Banaras Hindu University, Varanasi, 221005, India
| | - Mumtaz Ahmad Ansari
- Department of General Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Mallika Tewari
- Department of Surgical Oncology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Gopeshwar Narayan
- Deparment of Molecular and Human Genetics, Banaras Hindu University, Varanasi, 221005, India
| | - Sunita Singh
- Department of Zoology, Mahila Mahavidyalaya, Banaras Hindu University, Varanasi, 221005, India.
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6
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Abstract
Autophagy is an important life phenomenon in eukaryotic cells. Its main role is to remove and degrade its damaged organelles and excess biological macromolecules, and use degradation products to provide energy and rebuild the cell structure, playing an important role in maintaining cell homeostasis and cell life activities. Mitophagy is a form of macroautophagy. It has the beneficial effect of eliminating damaged mitochondria, thereby maintaining the integrity of the mitochondrial pool. Autophagy and mitophagy have a dual role in the development of cancer. On one hand, autophagy and mitophagy can maintain the normal physiological function of cells. On the other hand, excessive autophagy and mitophagy can lead to diseases. The present review introduces the mechanisms of autophagy and mitophagy, and the main related proteins, and introduce the correlation with cancers, providing a basis for the treatment of cancers through the understanding of these proteins.
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Affiliation(s)
- Hong-Ming Xu
- Department of Orthopaedic Surgery, Affiliated Cixi Hospital of Wenzhou Medical University, Cixi, Ningbo, People's Republic of China
| | - Fei Hu
- Diabetes Research Center, School of Medicine, Ningbo University, Ningbo, People's Republic of China
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7
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Chemotherapy-Free Targeted Anti-BCR-ABL+ Acute Lymphoblastic Leukemia Therapy May Benefit the Heart. Cancers (Basel) 2022; 14:cancers14040983. [PMID: 35205731 PMCID: PMC8870618 DOI: 10.3390/cancers14040983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/03/2022] [Accepted: 02/10/2022] [Indexed: 02/05/2023] Open
Abstract
Simple Summary Risk-adapted multiagent chemotherapy has led to a remarkable improvement in the life expectancy of patients with acute lymphoblastic leukemia (ALL). Nevertheless, in high-risk subgroups such as BCR-ABL+ ALL, relapse rates remain high without allogeneic hematopoietic stem cell transplantation, and the adverse effects of chemotherapy may cause acute and chronic cardiac complications or dysfunction. Here, we demonstrated that chemotherapy-free targeted therapies designed to optimize apoptosis induction in BCR-ABL+ ALL may circumvent cardiac on-target side effects and may even activate cardiac recovery. Abstract Targeted therapies are currently considered the best cost–benefit anti-cancer treatment. In hematological malignancies, however, relapse rates and non-hematopoietic side effects including cardiotoxicity remain high. Here, we describe significant heart damage due to advanced acute lymphoblastic leukemia (ALL) with t(9;22) encoding the bcr-abl oncogene (BCR-ABL+ ALL) in murine xenotransplantation models. Echocardiography reveals severe cardiac dysfunction with impaired left ventricular function and reduced heart and cardiomyocyte dimensions associated with increased apoptosis. This cardiac damage is fully reversible, but cardiac recovery depends on the therapy used to induce ALL remission. Chemotherapy-free combination therapy with dasatinib (DAS), venetoclax (VEN) (targeting the BCR-ABL oncoprotein and mitochondrial B-cell CLL/Lymphoma 2 (BCL2), respectively), and dexamethasone (DEX) can fully revert cardiac defects, whereas the depletion of otherwise identical ALL in a genetic model using herpes simplex virus type 1 thymidine kinase (HSV-TK) cannot. Mechanistically, dexamethasone induces a pro-apoptotic BCL2-interacting mediator of cell death (BIM) expression and apoptosis in ALL cells but enhances pro-survival B-cell lymphoma extra-large (BCLXL) expression in cardiomyocytes and clinical recovery with the reversion of cardiac atrophy. These data demonstrate that therapies designed to optimize apoptosis induction in ALL may circumvent cardiac on-target side effects and may even activate cardiac recovery. In the future, combining the careful clinical monitoring of cardiotoxicity in leukemic patients with the further characterization of organ-specific side effects and signaling pathways activated by malignancy and/or anti-tumor therapies seems reasonable.
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8
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Guo J, Chiang WC. Mitophagy in aging and longevity. IUBMB Life 2021; 74:296-316. [PMID: 34889504 DOI: 10.1002/iub.2585] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 11/21/2021] [Indexed: 12/22/2022]
Abstract
The clearance of damaged or unwanted mitochondria by autophagy (also known as mitophagy) is a mitochondrial quality control mechanism postulated to play an essential role in cellular homeostasis, metabolism, and development and confers protection against a wide range of diseases. Proper removal of damaged or unwanted mitochondria is essential for organismal health. Defects in mitophagy are associated with Parkinson's, Alzheimer's disease, cancer, and other degenerative disorders. Mitochondria regulate organismal fitness and longevity via multiple pathways, including cellular senescence, stem cell function, inflammation, mitochondrial unfolded protein response (mtUPR), and bioenergetics. Thus, mitophagy is postulated to be pivotal for maintaining organismal healthspan and lifespan and the protection against aged-related degeneration. In this review, we will summarize recent understanding of the mechanism of mitophagy and aspects of mitochondrial functions. We will focus on mitochondria-related cellular processes that are linked to aging and examine current genetic evidence that supports the hypothesis that mitophagy is a pro-longevity mechanism.
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Affiliation(s)
- Jing Guo
- Institute of Biochemistry and Molecular Biology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Wei-Chung Chiang
- Institute of Biochemistry and Molecular Biology, National Yang Ming Chiao Tung University, Taipei, Taiwan
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9
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Wu D, Dasgupta A, Read AD, Bentley RET, Motamed M, Chen KH, Al-Qazazi R, Mewburn JD, Dunham-Snary KJ, Alizadeh E, Tian L, Archer SL. Oxygen sensing, mitochondrial biology and experimental therapeutics for pulmonary hypertension and cancer. Free Radic Biol Med 2021; 170:150-178. [PMID: 33450375 PMCID: PMC8217091 DOI: 10.1016/j.freeradbiomed.2020.12.452] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/24/2020] [Accepted: 12/30/2020] [Indexed: 02/06/2023]
Abstract
The homeostatic oxygen sensing system (HOSS) optimizes systemic oxygen delivery. Specialized tissues utilize a conserved mitochondrial sensor, often involving NDUFS2 in complex I of the mitochondrial electron transport chain, as a site of pO2-responsive production of reactive oxygen species (ROS). These ROS are converted to a diffusible signaling molecule, hydrogen peroxide (H2O2), by superoxide dismutase (SOD2). H2O2 exits the mitochondria and regulates ion channels and enzymes, altering plasma membrane potential, intracellular Ca2+ and Ca2+-sensitization and controlling acute, adaptive, responses to hypoxia that involve changes in ventilation, vascular tone and neurotransmitter release. Subversion of this O2-sensing pathway creates a pseudohypoxic state that promotes disease progression in pulmonary arterial hypertension (PAH) and cancer. Pseudohypoxia is a state in which biochemical changes, normally associated with hypoxia, occur despite normal pO2. Epigenetic silencing of SOD2 by DNA methylation alters H2O2 production, activating hypoxia-inducible factor 1α, thereby disrupting mitochondrial metabolism and dynamics, accelerating cell proliferation and inhibiting apoptosis. Other epigenetic mechanisms, including dysregulation of microRNAs (miR), increase pyruvate dehydrogenase kinase and pyruvate kinase muscle isoform 2 expression in both diseases, favoring uncoupled aerobic glycolysis. This Warburg metabolic shift also accelerates cell proliferation and impairs apoptosis. Disordered mitochondrial dynamics, usually increased mitotic fission and impaired fusion, promotes disease progression in PAH and cancer. Epigenetic upregulation of dynamin-related protein 1 (Drp1) and its binding partners, MiD49 and MiD51, contributes to the pathogenesis of PAH and cancer. Finally, dysregulation of intramitochondrial Ca2+, resulting from impaired mitochondrial calcium uniporter complex (MCUC) function, links abnormal mitochondrial metabolism and dynamics. MiR-mediated decreases in MCUC function reduce intramitochondrial Ca2+, promoting Warburg metabolism, whilst increasing cytosolic Ca2+, promoting fission. Epigenetically disordered mitochondrial O2-sensing, metabolism, dynamics, and Ca2+ homeostasis offer new therapeutic targets for PAH and cancer. Promoting glucose oxidation, restoring the fission/fusion balance, and restoring mitochondrial calcium regulation are promising experimental therapeutic strategies.
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Affiliation(s)
- Danchen Wu
- Department of Medicine, Queen's University, 94 Stuart St., Kingston, Ontario, K7L 3N6, Canada
| | - Asish Dasgupta
- Department of Medicine, Queen's University, 94 Stuart St., Kingston, Ontario, K7L 3N6, Canada
| | - Austin D Read
- Department of Medicine, Queen's University, 94 Stuart St., Kingston, Ontario, K7L 3N6, Canada
| | - Rachel E T Bentley
- Department of Medicine, Queen's University, 94 Stuart St., Kingston, Ontario, K7L 3N6, Canada
| | - Mehras Motamed
- Department of Medicine, Queen's University, 94 Stuart St., Kingston, Ontario, K7L 3N6, Canada
| | - Kuang-Hueih Chen
- Department of Medicine, Queen's University, 94 Stuart St., Kingston, Ontario, K7L 3N6, Canada
| | - Ruaa Al-Qazazi
- Department of Medicine, Queen's University, 94 Stuart St., Kingston, Ontario, K7L 3N6, Canada
| | - Jeffrey D Mewburn
- Department of Medicine, Queen's University, 94 Stuart St., Kingston, Ontario, K7L 3N6, Canada
| | - Kimberly J Dunham-Snary
- Department of Medicine, Queen's University, 94 Stuart St., Kingston, Ontario, K7L 3N6, Canada; Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, K7L 3N6, Canada
| | - Elahe Alizadeh
- Queen's Cardiopulmonary Unit (QCPU), Department of Medicine, Queen's University, 116 Barrie Street, Kingston, ON, K7L 3J9, Canada
| | - Lian Tian
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, G4 0RE, UK
| | - Stephen L Archer
- Department of Medicine, Queen's University, 94 Stuart St., Kingston, Ontario, K7L 3N6, Canada.
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10
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Weinhouse C. The roles of inducible chromatin and transcriptional memory in cellular defense system responses to redox-active pollutants. Free Radic Biol Med 2021; 170:85-108. [PMID: 33789123 PMCID: PMC8382302 DOI: 10.1016/j.freeradbiomed.2021.03.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 12/17/2022]
Abstract
People are exposed to wide range of redox-active environmental pollutants. Air pollution, heavy metals, pesticides, and endocrine disrupting chemicals can disrupt cellular redox status. Redox-active pollutants in our environment all trigger their own sets of specific cellular responses, but they also activate a common set of general stress responses that buffer the cell against homeostatic insults. These cellular defense system (CDS) pathways include the heat shock response, the oxidative stress response, the hypoxia response, the unfolded protein response, the DNA damage response, and the general stress response mediated by the stress-activated p38 mitogen-activated protein kinase. Over the past two decades, the field of environmental epigenetics has investigated epigenetic responses to environmental pollutants, including redox-active pollutants. Studies of these responses highlight the role of chromatin modifications in controlling the transcriptional response to pollutants and the role of transcriptional memory, often referred to as "epigenetic reprogramming", in predisposing previously exposed individuals to more potent transcriptional responses on secondary challenge. My central thesis in this review is that high dose or chronic exposure to redox-active pollutants leads to transcriptional memories at CDS target genes that influence the cell's ability to mount protective responses. To support this thesis, I will: (1) summarize the known chromatin features required for inducible gene activation; (2) review the known forms of transcriptional memory; (3) discuss the roles of inducible chromatin and transcriptional memory in CDS responses that are activated by redox-active environmental pollutants; and (4) propose a conceptual framework for CDS pathway responsiveness as a readout of total cellular exposure to redox-active pollutants.
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Affiliation(s)
- Caren Weinhouse
- Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, OR, 97214, USA.
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11
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Feizi F, Allahbakhshian Farsani M, Mirzaeian A, Takhviji V, Hajifathali A, Hossein Mohammadi M. Triangle collaboration assessment of autophagy, ER stress and hypoxia in leukemogenesis: a bright perspective on the molecular recognition of B-ALL. Arch Physiol Biochem 2021; 127:285-289. [PMID: 31328564 DOI: 10.1080/13813455.2019.1635163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
B-lineage acute lymphoblastic leukemia (B-ALL) is the most common acute leukemia in childhood and adults, which caused by many various crystalline and unclear agents. Owning to this matter, no significant progress has been made in the patients-recovery. Recently, autophagy pathway is considered as an ambiguous agent in leukemia evaluation. We aim to discover the expression levels of upstream autophagy-regulating genes in newly diagnosed B-ALL patients. In B-ALL group, BECN1, HIF1A and ERN1 expressions were significantly down-regulated, while BCL2 expression was up-regulated compared to the control group (p < .05). Moreover, there was significant positive correlation between the decreased BECN1 compared with Hypoxia and endoplasmic reticulum (ER) stress-related genes expression in the patients (p < .05). Our findings revealed that, ERN1 and ER stress pathway-related genes could be effective regulators of autophagy in B-ALL. More investigation is recommended to gain a deeper understanding into molecular pathophysiology of B-ALL to improve treatment and monitoring approaches in affected patients.
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Affiliation(s)
- Fatemeh Feizi
- Laboratory Hematology and Blood Banking Department, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehdi Allahbakhshian Farsani
- HSCT Research Center, Laboratory Hematology and Blood Banking Department, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amin Mirzaeian
- HSCT Research Center, Laboratory Hematology and Blood Banking Department, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Vahide Takhviji
- Laboratory Hematology and Blood Banking Department, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Hajifathali
- HSCT Research Center, Laboratory Hematology and Blood Banking Department, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Hossein Mohammadi
- HSCT Research Center, Laboratory Hematology and Blood Banking Department, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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12
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Gorbunova AS, Yapryntseva MA, Denisenko TV, Zhivotovsky B. BNIP3 in Lung Cancer: To Kill or Rescue? Cancers (Basel) 2020; 12:cancers12113390. [PMID: 33207677 PMCID: PMC7697772 DOI: 10.3390/cancers12113390] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/06/2020] [Accepted: 11/13/2020] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Bcl-2/adenovirus E1B 19kDa interacting protein 3 (BNIP3) is a pro-apoptotic BH3-only protein of the Bcl-2 family. Its function in various biological processes was described. Although potential involvement of BNIP3 in cancer progression has been discussed in many review articles, its specific role in lung cancer is still unclear. In this review, we shed light on the BNIP3‘s role in different types of cancer in general and lung cancer, in particular, as well as suggested its potential for targeting therapy of lung cancer. Abstract Bcl-2/adenovirus E1B 19kDa interacting protein 3 (BNIP3) is a pro-apoptotic BH3-only protein of the Bcl-2 family. Initially, BNIP3 was described as one of the mediators of hypoxia-induced apoptotic cell death in cardiac myocytes and neurons. Besides apoptosis, BNIP3 plays a crucial role in autophagy, metabolic pathways, and metastasis-related processes in different tumor types. Lung cancer is one of the most aggressive types of cancer, which is often diagnosed at an advanced stage. Therefore, there is still urgent demand for reliable biochemical markers for lung cancer and its efficient treatment. Mitochondria functioning and mitochondrial proteins, including BNIP3, have a strong impact on lung cancer development and progression. Here, we summarized current knowledge about the BNIP3 gene and protein features and their role in cancer progression, especially in lung cancer in order to develop new therapeutic approaches associated with BNIP3.
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Affiliation(s)
- Anna S. Gorbunova
- Faculty of Basic Medicine, Lomonosov Moscow State University, 119192 Moscow, Russia; (A.S.G.); (M.A.Y.); (T.V.D.)
| | - Maria A. Yapryntseva
- Faculty of Basic Medicine, Lomonosov Moscow State University, 119192 Moscow, Russia; (A.S.G.); (M.A.Y.); (T.V.D.)
| | - Tatiana V. Denisenko
- Faculty of Basic Medicine, Lomonosov Moscow State University, 119192 Moscow, Russia; (A.S.G.); (M.A.Y.); (T.V.D.)
| | - Boris Zhivotovsky
- Faculty of Basic Medicine, Lomonosov Moscow State University, 119192 Moscow, Russia; (A.S.G.); (M.A.Y.); (T.V.D.)
- Karolinska Institutet, Institute of Environmental Medicine, SE-17177 Stockholm, Sweden
- Correspondence:
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13
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Kindrick JD, Mole DR. Hypoxic Regulation of Gene Transcription and Chromatin: Cause and Effect. Int J Mol Sci 2020; 21:E8320. [PMID: 33171917 PMCID: PMC7664190 DOI: 10.3390/ijms21218320] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 10/30/2020] [Accepted: 10/31/2020] [Indexed: 12/11/2022] Open
Abstract
Cellular responses to low oxygen (hypoxia) are fundamental to normal physiology and to the pathology of many common diseases. Hypoxia-inducible factor (HIF) is central to this by enhancing the transcriptional activity of many hundreds of genes. The cellular response to HIF is cell-type-specific and is largely governed by the pre-existing epigenetic landscape. Prior to activation, HIF-binding sites and the promoters of HIF-target genes are already accessible, in contact with each other through chromatin looping and display markers of activity. However, hypoxia also modulates the epigenetic environment, both in parallel to and as a consequence of HIF activation. This occurs through a combination of oxygen-sensitive changes in enzyme activity, transcriptional activation of epigenetic modifiers, and localized recruitment to chromatin by HIF and activated RNApol2. These hypoxic changes in the chromatin environment may both contribute to and occur as a consequence of transcriptional regulation. Nevertheless, they have the capacity to both modulate and extend the transcriptional response to hypoxia.
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Affiliation(s)
| | - David R. Mole
- NDM Research Building, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Headington, Oxford OX3 7FZ, UK;
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14
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Messeha SS, Zarmouh NO, Asiri A, Soliman KFA. Rosmarinic acid-induced apoptosis and cell cycle arrest in triple-negative breast cancer cells. Eur J Pharmacol 2020; 885:173419. [PMID: 32750370 PMCID: PMC7541730 DOI: 10.1016/j.ejphar.2020.173419] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 01/06/2023]
Abstract
Rosmarinic acid (RA) is a polyphenolic compound with various pharmacological properties, including, anti-inflammatory, immunomodulatory, and neuroprotective, as well as having antioxidant and anticancer activities. This study evaluated the effects and mechanisms of RA in two racially different triple-negative breast cancer (TNBC) cell lines. Results obtained show that RA significantly caused cytotoxic and antiproliferative effects in both cell lines in a dose- and time-dependent manner. Remarkably, RA induced cell cycle arrest-related apoptosis and altered the expression of many apoptosis-involved genes differently. In MDA-MB-231 cells, RA arrested the cells in the G0/G1 phase. In contrast, the data suggest that RA causes S-phase arrest in MDA-MB-468 cells, leading to a 2-fold increase in the apoptotic effect compared to MDA-MB-231 cells. Further, in MDA-MB-231 cells, RA significantly upregulated the mRNA expression of three genes: harakiri (HRK), tumor necrosis factor receptor superfamily 25 (TNFRSF25), and BCL-2 interacting protein 3 (BNIP3). In contrast, in the MDA-MB-468 cell line, the compound induced a significant transcription activation in three genes, including TNF, growth arrest and DNA damage-inducible 45 alpha (GADD45A), and BNIP3. Furthermore, RA repressed the expression of TNF receptor superfamily 11B (TNFRSF11B) in MDA-MB-231 cells in comparison to the ligand TNF superfamily member 10 (TNFSF10) and baculoviral IAP repeat-containing 5 (BIRC5) in MDA-MB-468 cells. In conclusion, the data suggest that the polyphenol RA may have a potential role in TNBC therapies, particularly in MDA-MB-468 cells.
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Affiliation(s)
- Samia S Messeha
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, 1415 ML King Blvd, Room G 134 H New Pharmacy Building, Tallahassee, FL, 32307, United States
| | - Najla O Zarmouh
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, 1415 ML King Blvd, Room G 134 H New Pharmacy Building, Tallahassee, FL, 32307, United States
| | - Abrar Asiri
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, 1415 ML King Blvd, Room G 134 H New Pharmacy Building, Tallahassee, FL, 32307, United States
| | - Karam F A Soliman
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, 1415 ML King Blvd, Room G 134 H New Pharmacy Building, Tallahassee, FL, 32307, United States.
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15
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Pogribna M, Koonce NA, Mathew A, Word B, Patri AK, Lyn-Cook B, Hammons G. Effect of titanium dioxide nanoparticles on DNA methylation in multiple human cell lines. Nanotoxicology 2020; 14:534-553. [PMID: 32031460 DOI: 10.1080/17435390.2020.1723730] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 01/07/2020] [Accepted: 01/24/2020] [Indexed: 12/27/2022]
Abstract
Nanoscale titanium dioxide (TiO2) is manufactured in wide scale, with a range of applications in consumer products. Significant toxicity of TiO2 nanoparticles has, however, been recognized, suggesting considerable risk to human health. To evaluate fully their toxicity, assessment of the epigenetic action of these nanoparticles is critical. However, only few studies are available examining capability of nanoparticles to alter epigenetic integrity. In the present study, the effect of TiO2 nanoparticles exposure on DNA methylation, a major epigenetic mechanism, was investigated in in vitro cellular model systems. A panel of cells relevant to portals of human exposure (Caco-2 (colorectal), HepG2 (liver), NL20 (lung), and A-431 (skin)) was exposed to TiO2 nanoparticles to assess effects on global methylation, gene-specific methylation, and expression levels of DNA methyltransferases, MBD2, and UHRF1. Global methylation was determined by enzyme-linked immunosorbent assay-based immunochemical analysis. Degree of promoter methylation across a defined panel of genes was evaluated using EpiTect Methyl II Signature PCR System Array technology. Expression of DNMT1, DNMT3a, DNMT3b, MBD2, and URHF1 was quantified by qRT-PCR. Decrease in global DNA methylation in cell lines Caco-2, HepG2, and A-431 exposed to TiO2 nanoparticles was shown. Across four cell lines, eight genes (CDKN1A, DNAJC15, GADD45A, GDF15, INSIG1, SCARA3, TP53, and BNIP3) were identified in which promotors were methylated after exposure. Altered expression of these genes is associated with disease etiology. The results also revealed aberrant expression of epigenetic regulatory genes involved in DNA methylation (DNMT1, DNMT3a, DNMT3b, MBD2, and UHRF1) in TiO2 exposed cells, which was cell type dependent. Findings from this study clearly demonstrate the impact of TiO2 nanoparticles exposure on DNA methylation in multiple cell types, supporting potential involvement of this epigenetic mechanism in the toxicity of TiO2 nanoparticles. Hence for complete assessment of potential risk from nanoparticle exposure, epigenetic studies are critical.
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Affiliation(s)
- Marta Pogribna
- Division of Biochemical Toxicity, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - Nathan A Koonce
- Nanotechology Core, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - Ammu Mathew
- Nanotechology Core, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - Beverly Word
- Division of Biochemical Toxicity, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - Anil K Patri
- Nanotechology Core, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - Beverly Lyn-Cook
- Division of Biochemical Toxicity, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - George Hammons
- Division of Biochemical Toxicity, FDA/National Center for Toxicological Research, Jefferson, AR, USA
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16
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Dysfunction of B-cell lymphoma 2/adenovirus E1B 19KD interacting protein 3 in decidua is involved in the pathogenesis of preeclampsia. J Hypertens 2019; 37:2048-2060. [DOI: 10.1097/hjh.0000000000002139] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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17
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Cullot G, Boutin J, Toutain J, Prat F, Pennamen P, Rooryck C, Teichmann M, Rousseau E, Lamrissi-Garcia I, Guyonnet-Duperat V, Bibeyran A, Lalanne M, Prouzet-Mauléon V, Turcq B, Ged C, Blouin JM, Richard E, Dabernat S, Moreau-Gaudry F, Bedel A. CRISPR-Cas9 genome editing induces megabase-scale chromosomal truncations. Nat Commun 2019; 10:1136. [PMID: 30850590 PMCID: PMC6408493 DOI: 10.1038/s41467-019-09006-2] [Citation(s) in RCA: 245] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 02/06/2019] [Indexed: 12/19/2022] Open
Abstract
CRISPR-Cas9 is a promising technology for genome editing. Here we use Cas9 nuclease-induced double-strand break DNA (DSB) at the UROS locus to model and correct congenital erythropoietic porphyria. We demonstrate that homology-directed repair is rare compared with NHEJ pathway leading to on-target indels and causing unwanted dysfunctional protein. Moreover, we describe unexpected chromosomal truncations resulting from only one Cas9 nuclease-induced DSB in cell lines and primary cells by a p53-dependent mechanism. Altogether, these side effects may limit the promising perspectives of the CRISPR-Cas9 nuclease system for disease modeling and gene therapy. We show that the single nickase approach could be safer since it prevents on- and off-target indels and chromosomal truncations. These results demonstrate that the single nickase and not the nuclease approach is preferable, not only for modeling disease but also and more importantly for the safe management of future CRISPR-Cas9-mediated gene therapies.
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MESH Headings
- CRISPR-Associated Protein 9/genetics
- CRISPR-Associated Protein 9/metabolism
- CRISPR-Cas Systems
- Chromosome Deletion
- Chromosomes, Human, Pair 10
- Clustered Regularly Interspaced Short Palindromic Repeats
- DNA/genetics
- DNA/metabolism
- DNA Breaks, Double-Stranded
- Deoxyribonuclease I/genetics
- Deoxyribonuclease I/metabolism
- Fibroblasts/cytology
- Fibroblasts/metabolism
- Gene Editing/methods
- Genetic Therapy/methods
- Genome, Human
- HEK293 Cells
- High-Throughput Nucleotide Sequencing
- Humans
- K562 Cells
- Models, Biological
- Porphyria, Erythropoietic/genetics
- Porphyria, Erythropoietic/metabolism
- Porphyria, Erythropoietic/pathology
- Porphyria, Erythropoietic/therapy
- Primary Cell Culture
- RNA, Guide, CRISPR-Cas Systems/genetics
- RNA, Guide, CRISPR-Cas Systems/metabolism
- Recombinational DNA Repair
- Tumor Suppressor Protein p53/genetics
- Tumor Suppressor Protein p53/metabolism
- Uroporphyrinogen III Synthetase/genetics
- Uroporphyrinogen III Synthetase/metabolism
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Affiliation(s)
- Grégoire Cullot
- Univ. Bordeaux, 33000, Bordeaux, France
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
| | - Julian Boutin
- Univ. Bordeaux, 33000, Bordeaux, France
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
- Biochemistry Laboratory, CHU Bordeaux, 33000, Bordeaux, France
| | - Jérôme Toutain
- Medical genetic laboratory, CHU Bordeaux, 33000, Bordeaux, France
| | - Florence Prat
- Univ. Bordeaux, 33000, Bordeaux, France
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
| | - Perrine Pennamen
- Medical genetic laboratory, CHU Bordeaux, 33000, Bordeaux, France
| | - Caroline Rooryck
- Medical genetic laboratory, CHU Bordeaux, 33000, Bordeaux, France
| | - Martin Teichmann
- Univ. Bordeaux, 33000, Bordeaux, France
- UMR 5320, INSERM U1212, ARNA Laboratory, 33000, Bordeaux, France
| | - Emilie Rousseau
- Univ. Bordeaux, 33000, Bordeaux, France
- UMR 5320, INSERM U1212, ARNA Laboratory, 33000, Bordeaux, France
| | - Isabelle Lamrissi-Garcia
- Univ. Bordeaux, 33000, Bordeaux, France
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
| | - Véronique Guyonnet-Duperat
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
- Vectorology Platform, 33000, Bordeaux, France
| | - Alice Bibeyran
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
- Vectorology Platform, 33000, Bordeaux, France
| | - Magalie Lalanne
- Univ. Bordeaux, 33000, Bordeaux, France
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
| | | | - Béatrice Turcq
- Univ. Bordeaux, 33000, Bordeaux, France
- INSERM U1218, ACTION, 33000, Bordeaux, France
| | - Cécile Ged
- Univ. Bordeaux, 33000, Bordeaux, France
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
- Biochemistry Laboratory, CHU Bordeaux, 33000, Bordeaux, France
- Laboratory of excellence, GR-Ex, Imagine institute, 75015, Paris, France
| | - Jean-Marc Blouin
- Univ. Bordeaux, 33000, Bordeaux, France
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
- Biochemistry Laboratory, CHU Bordeaux, 33000, Bordeaux, France
- Laboratory of excellence, GR-Ex, Imagine institute, 75015, Paris, France
| | - Emmanuel Richard
- Univ. Bordeaux, 33000, Bordeaux, France
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
- Biochemistry Laboratory, CHU Bordeaux, 33000, Bordeaux, France
- Laboratory of excellence, GR-Ex, Imagine institute, 75015, Paris, France
| | - Sandrine Dabernat
- Univ. Bordeaux, 33000, Bordeaux, France
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
- Biochemistry Laboratory, CHU Bordeaux, 33000, Bordeaux, France
| | - François Moreau-Gaudry
- Univ. Bordeaux, 33000, Bordeaux, France.
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France.
- Biochemistry Laboratory, CHU Bordeaux, 33000, Bordeaux, France.
- Vectorology Platform, 33000, Bordeaux, France.
- Laboratory of excellence, GR-Ex, Imagine institute, 75015, Paris, France.
| | - Aurélie Bedel
- Univ. Bordeaux, 33000, Bordeaux, France
- INSERM U1035, Biotherapy of genetic diseases, inflammatory disorders and cancers, 33000, Bordeaux, France
- Biochemistry Laboratory, CHU Bordeaux, 33000, Bordeaux, France
- Laboratory of excellence, GR-Ex, Imagine institute, 75015, Paris, France
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18
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Shao Y, Liu Z, Liu J, Wang H, Huang L, Lin T, Liu J, Wei Q, Zeng H, He G, Li X. Expression and epigenetic regulatory mechanism of BNIP3 in clear cell renal cell carcinoma. Int J Oncol 2018; 54:348-360. [PMID: 30365137 PMCID: PMC6254932 DOI: 10.3892/ijo.2018.4603] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 10/02/2018] [Indexed: 02/05/2023] Open
Abstract
The majority of clear cell renal cell carcinomas (ccRCCs) are caused by an accumulation of hypoxia-inducible factor (HIF) and the overexpression of downstream genes in response to the von Hippel-Lindau (VHL) gene becoming inactivated. In the present study, our hypothesis was that BNIP3, a gene positioned downstream of HIF, would be expressed at a higher level in ccRCC; however, instead, lower levels of BNIP3 expression were identified in RCC tumor tissues compared with adjacent non-tumor tissues. These changes were associated with lower levels of VHL, and higher levels of HIF and vascular endothelial growth factor. BNIP3 was also undetectable in three investigated RCC cell lines (786-O, ACHN, A498) and GRC-1-1 cells. Methylation of the BNIP3 promoter was not detected, and neither did treatment with a methylation inhibitor cause cell proliferation. However, treatment with a histone deacetylation inhibitor, trichostatin A (TSA), inhibited cultured RCC cell proliferation, promoted apoptosis and restored BNIP3 expression. Furthermore, histone deacetylation of the BNIP3 promoter was identified in ACHN and 786-O cells, and the acetylation status was restored following TSA treatment. Taken together, the results of the present study suggest that histone deacetylation, but not methylation, is most likely to cause BNIP3 inactivation in RCC. The data also indicated that restoration of BNIP3 expression by a histone deacetylation inhibitor led to growth inhibition and apoptotic promotion in RCC.
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Affiliation(s)
- Yanxiang Shao
- Department of Urology, Institute of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Zhenhua Liu
- Department of Urology, Institute of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Jianbang Liu
- Department of Urology, Institute of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Haizhou Wang
- Department of Urology, Institute of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Long Huang
- Department of Urology, Institute of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Tianhai Lin
- Department of Urology, Institute of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Jiyan Liu
- Department of Oncology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Qiang Wei
- Department of Urology, Institute of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Hao Zeng
- Department of Urology, Institute of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Gu He
- State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Xiang Li
- Department of Urology, Institute of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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19
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Veron V, Marandel L, Liu J, Vélez EJ, Lepais O, Panserat S, Skiba S, Seiliez I. DNA methylation of the promoter region of bnip3 and bnip3l genes induced by metabolic programming. BMC Genomics 2018; 19:677. [PMID: 30223788 PMCID: PMC6142374 DOI: 10.1186/s12864-018-5048-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 08/31/2018] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Environmental changes of biotic or abiotic nature during critical periods of early development may exert a profound influence on physiological functions later in life. This process, named developmental programming can also be driven through parental nutrition. At molecular level, epigenetic modifications are the most likely candidate for persistent modulation of genes expression in later life. RESULTS In order to investigate epigenetic modifications induced by programming in rainbow trout, we focused on bnip3 and bnip3l paralogous genes known to be sensitive to environmental changes but also regulated by epigenetic modifications. Two specific stimuli were used: (i) early acute hypoxia applied at embryo stage and (ii) broodstock and fry methionine deficient diet, considering methionine as one of the main methyl-group donor needed for DNA methylation. We observed a programming effect of hypoxia with an increase of bnip3a and the four paralogs of bnip3l expression level in fry. In addition, parental methionine nutrition was correlated to bnip3a and bnip3lb1 expression showing evidence for early fry programming. We highlighted that both stimuli modified DNA methylation levels at some specific loci of bnip3a and bnip3lb1. CONCLUSION Overall, these data demonstrate that methionine level and hypoxia stimulus can be of critical importance in metabolic programming. Both stimuli affected DNA methylation of specific loci, among them, an interesting CpG site have been identified, namely - 884 bp site of bnip3a, and may be positively related with mRNA levels.
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Affiliation(s)
- Vincent Veron
- INRA, Univ Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, F-64310, Saint-Pée-sur-Nivelle, France
| | - Lucie Marandel
- INRA, Univ Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, F-64310, Saint-Pée-sur-Nivelle, France
| | - Jingwei Liu
- INRA, Univ Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, F-64310, Saint-Pée-sur-Nivelle, France
| | - Emilio J Vélez
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Olivier Lepais
- INRA, Univ Pau & Pays de l'Adour, UMR Ecobiop, Aquapôle, F-64310, Saint-Pée-sur-Nivelle, France
| | - Stéphane Panserat
- INRA, Univ Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, F-64310, Saint-Pée-sur-Nivelle, France
| | - Sandrine Skiba
- INRA, Univ Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, F-64310, Saint-Pée-sur-Nivelle, France
| | - Iban Seiliez
- INRA, Univ Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, F-64310, Saint-Pée-sur-Nivelle, France.
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20
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Gao C, Zhuang J, Zhou C, Liu L, Liu C, Li H, Zhao M, Liu G, Sun C. Developing DNA methylation-based prognostic biomarkers of acute myeloid leukemia. J Cell Biochem 2018; 119:10041-10050. [PMID: 30171717 DOI: 10.1002/jcb.27336] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 06/26/2018] [Indexed: 12/21/2022]
Abstract
Acute myeloid leukemia (AML) is a heterogeneous clonal neoplasm characterized by complex genomic alterations. The incidence of AML increases with age, and most cases experience serious illness and poor prognosis. To explore the relationship between abnormal DNA methylation and the occurrence and development of AML based on the Gene Expression Database (GEO), this study extracted data related to methylation in AML and identified a methylated CpG site that was significantly different in terms of expression and distribution between the primary cells of AML patients, and hematopoietic stem/progenitor cells from normal bone marrow. To further investigate the differences caused by the dysfunction of methylation sites, bioinformatics analysis was used to screen methylation-related biomarkers, and the potential prognostic genes were selected by univariate and multivariate Cox proportional hazards regressions. Finally, five independent prognostic indicators were identified. In addition, these results provide new insight into the molecular mechanisms of methylation.
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Affiliation(s)
- Chundi Gao
- College of First Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Jing Zhuang
- Department of Oncology, Weifang Traditional Chinese Hospital, Weifang, Shandong, China.,Department of Oncology, Affilited Hospital of Weifang Medical University, Weifang, Shandong, China
| | - Chao Zhou
- Department of Oncology, Weifang Traditional Chinese Hospital, Weifang, Shandong, China.,Department of Oncology, Affilited Hospital of Weifang Medical University, Weifang, Shandong, China
| | - Lijuan Liu
- Department of Oncology, Weifang Traditional Chinese Hospital, Weifang, Shandong, China.,Department of Oncology, Affilited Hospital of Weifang Medical University, Weifang, Shandong, China
| | - Cun Liu
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Huayao Li
- College of First Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Minzhang Zhao
- School of Medicine, Shandong University, Jinan, China
| | - Gongxi Liu
- Department of Oncology, Weifang Traditional Chinese Hospital, Weifang, Shandong, China.,Department of Oncology, Affilited Hospital of Weifang Medical University, Weifang, Shandong, China
| | - Changgang Sun
- Department of Oncology, Weifang Traditional Chinese Hospital, Weifang, Shandong, China.,Department of Oncology, Affilited Hospital of Weifang Medical University, Weifang, Shandong, China
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21
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Predictors of clinical responses to hypomethylating agents in acute myeloid leukemia or myelodysplastic syndromes. Ann Hematol 2018; 97:2025-2038. [DOI: 10.1007/s00277-018-3464-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 07/27/2018] [Indexed: 12/18/2022]
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22
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Abstract
Myocardial injury activates inflammatory mediators and provokes the integration of BCL-2/adenovirus E1B 19KD interacting protein 3 (BNIP3) into mitochondrial membranes. Translocation of BNIP3 to mitochondria inexorably causes mitochondrial fragmentation. Heart failure (HF) epitomizes the life-threatening phase of BNIP3-induced mitochondrial dysfunction and cardiomyocyte death. Available data suggest that inflammatory mediators play a key role in cardiac cell demise and have been implicated in the pathogenesis of HF syndrome. In the present study, we reviewed the changes in BNIP3 protein expression levels during inflammatory response and postulated its role in inflammation-mediated HF. We also identified inflammatory mediators' response such as stimulation of TNF-α and NO as potent inducer of BNIP3. Previous studies suggest that the pro-apoptotic protein has a common regulator with IL-1β and induces IL-6-stimulated cardiac hypertrophy. These findings corroborate our contention that interventions designed to functionally modulate BNIP3 activity during inflammatory-mediated HF may prove beneficial in preventing HF. Such a revelation will open new avenue for further research to unravel a novel therapeutic strategy in HF diseases. Moreover, understanding of the relationship between BNIP3 and inflammatory mediators in HF pathologies will not only contribute to the discovery of drugs that can inhibit inflammation-mediated heart diseases, but also enhance the current knowledge on the key role BNIP3 plays during inflammation.
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23
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Drake LE, Springer MZ, Poole LP, Kim CJ, Macleod KF. Expanding perspectives on the significance of mitophagy in cancer. Semin Cancer Biol 2017; 47:110-124. [PMID: 28450176 PMCID: PMC5654704 DOI: 10.1016/j.semcancer.2017.04.008] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 04/19/2017] [Accepted: 04/20/2017] [Indexed: 02/06/2023]
Abstract
Mitophagy is a selective mode of autophagy in which mitochondria are specifically targeted for degradation at the autophagolysosome. Mitophagy is activated by stresses such as hypoxia, nutrient deprivation, DNA damage, inflammation and mitochondrial membrane depolarization and plays a role in maintaining mitochondrial integrity and function. Defects in mitophagy lead to mitochondrial dysfunction that can affect metabolic reprogramming in response to stress, alter cell fate determination and differentiation, which in turn affects disease incidence and etiology, including cancer. Here, we discuss how different mitophagy adaptors and modulators, including Parkin, BNIP3, BNIP3L, p62/SQSTM1 and OPTN, are regulated in response to physiological stresses and deregulated in cancers. Additionally, we explore how these different mitophagy control pathways coordinate with each other. Finally, we review new developments in understanding how mitophagy affects stemness, cell fate determination, inflammation and DNA damage responses that are relevant to understanding the role of mitophagy in cancer.
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Affiliation(s)
- Lauren E Drake
- The Ben May Department for Cancer Research, The University of Chicago, USA
| | - Maya Z Springer
- The Ben May Department for Cancer Research, The University of Chicago, USA; The Committee on Cancer Biology, The University of Chicago, USA
| | - Logan P Poole
- The Ben May Department for Cancer Research, The University of Chicago, USA; The Committee on Cancer Biology, The University of Chicago, USA
| | - Casey J Kim
- The Ben May Department for Cancer Research, The University of Chicago, USA
| | - Kay F Macleod
- The Ben May Department for Cancer Research, The University of Chicago, USA; The Committee on Cancer Biology, The University of Chicago, USA.
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24
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Mitophagy and age-related pathologies: Development of new therapeutics by targeting mitochondrial turnover. Pharmacol Ther 2017; 178:157-174. [DOI: 10.1016/j.pharmthera.2017.04.005] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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25
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Macher-Goeppinger S, Keith M, Hatiboglu G, Hohenfellner M, Schirmacher P, Roth W, Tagscherer KE. Expression and Functional Characterization of the BNIP3 Protein in Renal Cell Carcinomas. Transl Oncol 2017; 10:869-875. [PMID: 28918350 PMCID: PMC5602480 DOI: 10.1016/j.tranon.2017.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 08/21/2017] [Accepted: 08/28/2017] [Indexed: 02/01/2023] Open
Abstract
BNIP3 (Bcl-2/adenovirus E1B 19-kDa interacting protein 3) is a BH3-only protein that regulates apoptosis and autophagy. BNIP3 plays also an important role in hypoxia-induced cell response and is regulated by HIF1. Here, we studied a possible association of BNIP3 expression and the prognosis of patients with renal cell carcinomas (RCCs) and examined the functional relevance of BNIP3 in the regulation of cell survival and apoptosis of renal carcinoma cells. BNIP3 expression was determined by immunohistochemistry in RCC tumor tissue samples of 569 patients using a tissue microarray. Functional characterization of BNIP3 in renal carcinoma cells indicates prosurvival effects. In human RCC tumor samples, high cytoplasmic BNIP3 expression was associated with high-grade RCCs and regional lymph node metastasis. BNIP3 expression correlated negatively with disease-specific survival. Multivariate Cox regression analysis retained BNIP3 expression as an independent prognostic factor in patients without distant metastasis. Together, our studies imply that BNIP3 regulates cell survival in RCCs and its expression is an independent prognostic marker in patients with localized RCCs.
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Affiliation(s)
- Stephan Macher-Goeppinger
- Institute of Pathology, University Medical Center Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; Institute of Pathology, University of Heidelberg, Im Neuenheimer Feld 224, 69120 Heidelberg, Germany.
| | - Martina Keith
- Institute of Pathology, University of Heidelberg, Im Neuenheimer Feld 224, 69120 Heidelberg, Germany
| | - Gencay Hatiboglu
- Department of Urology, University of Heidelberg, Im Neuenheimer Feld 110, 69120 Heidelberg, Germany
| | - Markus Hohenfellner
- Department of Urology, University of Heidelberg, Im Neuenheimer Feld 110, 69120 Heidelberg, Germany
| | - Peter Schirmacher
- Institute of Pathology, University of Heidelberg, Im Neuenheimer Feld 224, 69120 Heidelberg, Germany
| | - Wilfried Roth
- Institute of Pathology, University Medical Center Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; Institute of Pathology, University of Heidelberg, Im Neuenheimer Feld 224, 69120 Heidelberg, Germany
| | - Katrin E Tagscherer
- Institute of Pathology, University Medical Center Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; Institute of Pathology, University of Heidelberg, Im Neuenheimer Feld 224, 69120 Heidelberg, Germany
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26
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Deshmukh A, Binju M, Arfuso F, Newsholme P, Dharmarajan A. Role of epigenetic modulation in cancer stem cell fate. Int J Biochem Cell Biol 2017; 90:9-16. [DOI: 10.1016/j.biocel.2017.07.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/31/2017] [Accepted: 07/11/2017] [Indexed: 01/16/2023]
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27
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Navarrete-Meneses MDP, Pérez-Vera P. Alteraciones epigenéticas en leucemia linfoblástica aguda. BOLETIN MEDICO DEL HOSPITAL INFANTIL DE MEXICO 2017; 74:243-264. [DOI: 10.1016/j.bmhimx.2017.02.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 02/04/2017] [Accepted: 02/08/2017] [Indexed: 12/22/2022] Open
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28
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29
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He Z, Pu L, Yuan C, Jia M, Wang J. Nutrition deficiency promotes apoptosis of cartilage endplate stem cells in a caspase-independent manner partially through upregulating BNIP3. Acta Biochim Biophys Sin (Shanghai) 2017; 49:25-32. [PMID: 27864279 DOI: 10.1093/abbs/gmw111] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 10/09/2016] [Indexed: 01/07/2023] Open
Abstract
Nutrition deficiency is reported to induce apoptosis of chondrocytes and degeneration of cartilage endplate (CEP) in rabbit. Cartilage endplate stem cells (CESCs) are important for the integrity of structure and function of CEP. Bcl-2/adenovirus E1B 19-kDa-interacting protein 3 (BNIP3) has been reported to regulate apoptosis, autophagy, and cytoprotection. In this study, we aimed to determine whether nutrition deficiency induces apoptosis of CESCs, and whether or not the BNIP3-related pathway is activated in CESCs during nutrition deficiency. CESCs isolated from degenerated human CEP were cultured under normal or nutrition-deficient condition. Then, apoptosis was analyzed by flow cytometry. The expression and intracellular localization of BNIP3 were detected by quantitative real-time polymerase chain reaction, western blot analysis, and immunofluorescence assay, respectively. Mitochondrial membrane potential (MMP) and caspase-3 activity were measured by JC-1 staining and caspase-3 activity assay. Our results showed that nutrition deficiency promotes apoptosis and BNIP3 expression in CESCs. Notably, knockdown of BNIP3 could partially decrease nutrition deficiency-induced apoptosis of CESCs. In addition, nutrition deficiency could also induce upregulation of BNIP3, resulting in mitochondrial translocation of BNIP3 and loss of MMP in CESCs in a time-dependent manner. However, nutrition deficiency showed no effects on caspase-3 activity in CESCs. In summary, nutrition deficiency may promote CESC apoptosis partially through upregulating BNIP3, which might lead to activation of the BNIP3-related pathway and apoptosis of CESCs in a caspase-independent manner.
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Affiliation(s)
- Zhiliang He
- Department of Orthopedics, Xinqiao Hospital, Third Military Medical University, Chongqing 400038, China
| | - Luqiao Pu
- Department of Orthopedics, Xinqiao Hospital, Third Military Medical University, Chongqing 400038, China
| | - Chao Yuan
- Department of Orthopedics, Xinqiao Hospital, Third Military Medical University, Chongqing 400038, China
| | - Min Jia
- Department of Orthopedics, Xinqiao Hospital, Third Military Medical University, Chongqing 400038, China
| | - Jian Wang
- Department of Orthopedics, Xinqiao Hospital, Third Military Medical University, Chongqing 400038, China
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30
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Zhanwei C, Dubin S, Shengyun H, Haiwei W, Dongsheng Z. [Analysis of BNIP3 expression and clinical research in salivary adenoid cystic carcinoma]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2016; 34:404-407. [PMID: 28317361 DOI: 10.7518/hxkq.2016.04.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVE This study investigated the expression of BNIP3 in salivary adenoid cystic carcinoma (SACC) and its correlations to the clinicopathological features and prognosis of patients with SACC. The role of BNIP3 in the progress of hypoxia-induced autophagy was elucidated. METHODS The expression levels of BNIP3, hypoxia inducible factor (HIF)-1α, and LC3 in 65 SACC cases were detected by immunohistochemical staining method, and the correlation between the expression of BNIP3 and the clinicopathological features in SACC was analyzed. In addition, the correlations of BNIP3 gene expression with HIF-1α and LC3 gene expression were analyzed. The survival rate of patients with SACC was evaluated by univa-riate survival analysis. RESULTS BNIP3 was considerably expressed in SACC in all three histological patterns, and was positive in 41 cases (63.1%). BNIP3 gene expression was significantly correlated with histological grade (P=0.001) and HIF-1α gene expression (P=0.011). By contrast, BNIP3 gene expression was not significantly correlated with LC3 gene expression (P=
0.167). The overall survival rate of patients with negative BNIP3 expression was better than that of patients with positive BNIP3 expression (P<0.05). CONCLUSIONS BNIP3 might play a vital role in the tumorigenesis of SACC and may be a new target for gene therapy.
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Affiliation(s)
- Chen Zhanwei
- Dept. of Oral and Maxillofacial Surgery, Shandong Provincial Hos-pital Affiliated to Shandong University, Jinan 250021, China
| | - Sun Dubin
- Dept. of Stomatology, The People's Hospital of Zoucheng City, Jining 273500, China
| | - Huang Shengyun
- Dept. of Oral and Maxillofacial Surgery, Shandong Provincial Hos-pital Affiliated to Shandong University, Jinan 250021, China
| | - Wu Haiwei
- Dept. of Oral and Maxillofacial Surgery, Shandong Provincial Hos-pital Affiliated to Shandong University, Jinan 250021, China
| | - Zhang Dongsheng
- Dept. of Oral and Maxillofacial Surgery, Shandong Provincial Hos-pital Affiliated to Shandong University, Jinan 250021, China
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31
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Lazarini M, Machado-Neto JA, Duarte ADSS, Pericole FV, Vieira KP, Niemann FS, Alvarez M, Traina F, Saad STO. BNIP3L in myelodysplastic syndromes and acute myeloid leukemia: impact on disease outcome and cellular response to decitabine. Haematologica 2016; 101:e445-e448. [PMID: 27443286 DOI: 10.3324/haematol.2016.142521] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Mariana Lazarini
- Hematology and Blood Transfusion Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil .,Department of Biological Sciences, Federal University of São Paulo, Diadema, Brazil
| | - João Agostinho Machado-Neto
- Hematology and Blood Transfusion Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil
| | - Adriana da Silva Santos Duarte
- Hematology and Blood Transfusion Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil
| | - Fernando Vieira Pericole
- Hematology and Blood Transfusion Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil
| | - Karla Priscila Vieira
- Hematology and Blood Transfusion Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil
| | - Fernanda S Niemann
- Hematology and Blood Transfusion Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil
| | - Marisa Alvarez
- Hematology and Blood Transfusion Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil
| | - Fabiola Traina
- Hematology and Blood Transfusion Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil.,Department of Internal Medicine, University of São Paulo at Ribeirão Preto Medical School, Brazil
| | - Sara Teresinha Olalla Saad
- Hematology and Blood Transfusion Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil
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32
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Hamacher-Brady A, Brady NR. Mitophagy programs: mechanisms and physiological implications of mitochondrial targeting by autophagy. Cell Mol Life Sci 2016; 73:775-95. [PMID: 26611876 PMCID: PMC4735260 DOI: 10.1007/s00018-015-2087-8] [Citation(s) in RCA: 283] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 10/30/2015] [Accepted: 11/02/2015] [Indexed: 02/07/2023]
Abstract
Mitochondria are an essential source of ATP for cellular function, but when damaged, mitochondria generate a plethora of stress signals, which lead to cellular dysfunction and eventually programmed cell death. Thus, a major component of maintaining cellular homeostasis is the recognition and removal of dysfunctional mitochondria through autophagy-mediated degradation, i.e., mitophagy. Mitophagy further constitutes a developmental program, and undergoes a high degree of crosstalk with apoptosis. Reduced mitochondrial quality control is linked to disease pathogenesis, suggesting the importance of process elucidation as a clinical target. Recent work has revealed multiple mitophagy programs that operate independently or undergo crosstalk, and require modulated autophagy receptor activities at outer membranes of mitochondria. Here, we review these mitophagy programs, focusing on pathway mechanisms which recognize and target mitochondria for sequestration by autophagosomes, as well as mechanisms controlling pathway activities. Furthermore, we provide an introduction to the currently available methods for detecting mitophagy.
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Affiliation(s)
- Anne Hamacher-Brady
- Lysosomal Systems Biology, German Cancer Research Center (DKFZ), Heidelberg, Germany.
- Bioquant, University of Heidelberg, INF 267, BQ0045, 69120, Heidelberg, Germany.
| | - Nathan Ryan Brady
- Systems Biology of Cell Death Mechanisms, German Cancer Research Center (DKFZ), Heidelberg, Germany.
- Department of Surgery, Heidelberg University Hospital, Heidelberg, Germany.
- Bioquant, University of Heidelberg, INF 267, BQ0045, 69120, Heidelberg, Germany.
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33
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Vukovic M, Guitart AV, Sepulveda C, Villacreces A, O'Duibhir E, Panagopoulou TI, Ivens A, Menendez-Gonzalez J, Iglesias JM, Allen L, Glykofrydis F, Subramani C, Armesilla-Diaz A, Post AEM, Schaak K, Gezer D, So CWE, Holyoake TL, Wood A, O'Carroll D, Ratcliffe PJ, Kranc KR. Hif-1α and Hif-2α synergize to suppress AML development but are dispensable for disease maintenance. J Exp Med 2015; 212:2223-34. [PMID: 26642852 PMCID: PMC4689165 DOI: 10.1084/jem.20150452] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 11/03/2015] [Indexed: 11/08/2022] Open
Abstract
Leukemogenesis occurs under hypoxic conditions within the bone marrow (BM). Knockdown of key mediators of cellular responses to hypoxia with shRNA, namely hypoxia-inducible factor-1α (HIF-1α) or HIF-2α, in human acute myeloid leukemia (AML) samples results in their apoptosis and inability to engraft, implicating HIF-1α or HIF-2α as therapeutic targets. However, genetic deletion of Hif-1α has no effect on mouse AML maintenance and may accelerate disease development. Here, we report the impact of conditional genetic deletion of Hif-2α or both Hif-1α and Hif-2α at different stages of leukemogenesis in mice. Deletion of Hif-2α accelerates development of leukemic stem cells (LSCs) and shortens AML latency initiated by Mll-AF9 and its downstream effectors Meis1 and Hoxa9. Notably, the accelerated initiation of AML caused by Hif-2α deletion is further potentiated by Hif-1α codeletion. However, established LSCs lacking Hif-2α or both Hif-1α and Hif-2α propagate AML with the same latency as wild-type LSCs. Furthermore, pharmacological inhibition of the HIF pathway or HIF-2α knockout using the lentiviral CRISPR-Cas9 system in human established leukemic cells with MLL-AF9 translocation have no impact on their functions. We therefore conclude that although Hif-1α and Hif-2α synergize to suppress the development of AML, they are not required for LSC maintenance.
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MESH Headings
- Animals
- Base Sequence
- Basic Helix-Loop-Helix Transcription Factors/metabolism
- CRISPR-Cas Systems/genetics
- Cell Hypoxia
- Cell Line, Tumor
- Cell Proliferation
- Cell Survival
- Disease Models, Animal
- Disease Progression
- Gene Deletion
- Gene Expression Profiling
- Gene Expression Regulation, Leukemic
- Homeodomain Proteins/metabolism
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/pathology
- Mice
- Molecular Sequence Data
- Myeloid Ecotropic Viral Integration Site 1 Protein
- Neoplasm Proteins/metabolism
- Neoplastic Stem Cells/metabolism
- Neoplastic Stem Cells/pathology
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Affiliation(s)
- Milica Vukovic
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | - Amelie V Guitart
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | - Catarina Sepulveda
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | - Arnaud Villacreces
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | - Eoghan O'Duibhir
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | - Theano I Panagopoulou
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | - Alasdair Ivens
- Centre for Infection, Immunity, and Evolution, King's Buildings, University of Edinburgh, Edinburgh EH9 3FL, Scotland, UK
| | - Juan Menendez-Gonzalez
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | | | - Lewis Allen
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | - Fokion Glykofrydis
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | - Chithra Subramani
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | | | - Annemarie E M Post
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | - Katrin Schaak
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK
| | - Deniz Gezer
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK Klinik fuer Haematologie, Onkologie und Stammzelltransplantation, Universitaetsklinikum Aachen, 52074 Aachen, Germany Paul O'Gorman Leukaemia Research Centre, University of Glasgow, Glasgow G120 ZD, Scotland, UK
| | - Chi Wai Eric So
- Department of Haematological Medicine, King's College London, London SE5 9RS, England, UK
| | - Tessa L Holyoake
- Paul O'Gorman Leukaemia Research Centre, University of Glasgow, Glasgow G120 ZD, Scotland, UK
| | - Andrew Wood
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, Scotland, UK
| | - Dónal O'Carroll
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK European Molecular Biology Laboratory (EMBL), Mouse Biology Unit, 00015 Monterotondo Scalo, Italy
| | - Peter J Ratcliffe
- Nuffield Department of Clinical Medicine, University of Oxford, Oxford OX3 7BN, England, UK
| | - Kamil R Kranc
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, Scotland, UK Edinburgh Cancer Research UK Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XR, Scotland, UK
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Zhu Z, Lu X, Jiang L, Sun X, Zhou H, Jia Z, Zhang X, Ma L. STAT3 signaling pathway is involved in decitabine induced biological phenotype regulation of acute myeloid leukemia cells. Am J Transl Res 2015; 7:1896-1907. [PMID: 26692933 PMCID: PMC4656766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Accepted: 10/11/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVE This study aimed to investigate the role of signal transduction and transcriptional activator STAT3 and relevant signaling pathway in the DAC regulated biological phenotype of AML cells. METHODS The effect of DAC at different concentrations on the proliferation of HL-60 cells was determined. After DAC treatment for 48 h, the killing capability of NK cells against HL-60 cells and the protein expressions of STAT3, JAK1, JAK2, SOCS-1 and SOCS-3 were evaluated. RESULTS DAC markedly inhibited the proliferation of HL-60 cells. After the treatment of 48 hr with 0.2, 0.5 and 1.0 mol/L DAC, the HL-60 viability was reduced by 25±13%, 39±8% and 50±7% (P<0.01), respectively, and the early apoptosis rate was increased to 24.77±7.5%, 27.1±4.48% and 30.53±3.93%, respectively (control: 3.11±0.12%, P<0.01). DAC up-regulated the expression of MICA/B, ULBP-1 and ULBP-3 in HL-60 cells, and increased the killing activity of NK cells to HL-60 cells. DAC significantly induced the apoptosis of HL-60 cells and up-regulated the expression of NKG2D ligands in a dose dependent manner. Western blot assay showed the protein expression of STAT3, JAK, JAK2, phosphorylated STAT3, phosphorylated JAK1 and phosphorylated JAK2 decreased, while that of SOCS-1 and SOCS-3 increased in HL-60 cells after DAC treatment. CONCLUSION In HL-60 cells, DAC can markedly inhibit their proliferation and up-regulate the expression of NKG2D ligands, and DAC also increase the cytotoxicity of NK cells to HL-60 cells, which may be related to the STAT3 related signaling pathway.
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Affiliation(s)
- Zhichao Zhu
- Laboratory Center, Changzhou No. 2 People’s Hospital, Affiliated Hospital of Nanjing Medical UniversityNo. 29 Xinglong Lane, Changzhou 213000, China
| | - Xuzhang Lu
- Department of Hematology, Changzhou No. 2 People’s Hospital, Affiliated Hospital of Nanjing Medical UniversityNo. 188 Gehu Middle Road, Changzhou 213000, China
| | - Lijia Jiang
- Laboratory Center, Changzhou No. 2 People’s Hospital, Affiliated Hospital of Nanjing Medical UniversityNo. 29 Xinglong Lane, Changzhou 213000, China
| | - Xiao Sun
- Laboratory Center, Changzhou No. 2 People’s Hospital, Affiliated Hospital of Nanjing Medical UniversityNo. 29 Xinglong Lane, Changzhou 213000, China
| | - Haijun Zhou
- Laboratory Center, Changzhou No. 2 People’s Hospital, Affiliated Hospital of Nanjing Medical UniversityNo. 29 Xinglong Lane, Changzhou 213000, China
| | - Zhuxia Jia
- Department of Hematology, Changzhou No. 2 People’s Hospital, Affiliated Hospital of Nanjing Medical UniversityNo. 188 Gehu Middle Road, Changzhou 213000, China
| | - Xiuwen Zhang
- Department of Hematology, Changzhou No. 2 People’s Hospital, Affiliated Hospital of Nanjing Medical UniversityNo. 188 Gehu Middle Road, Changzhou 213000, China
| | - Lingdi Ma
- Department of Laboratory Medicine, Huizhou No. 3 People’s Hospital, Affiliated Hospital of Guangzhou Medical UniversityNo. 1 Xuebei Street, Qiaodong Road, Huizhou 615000, China
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35
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Chourasia AH, Tracy K, Frankenberger C, Boland ML, Sharifi MN, Drake LE, Sachleben JR, Asara JM, Locasale JW, Karczmar GS, Macleod KF. Mitophagy defects arising from BNip3 loss promote mammary tumor progression to metastasis. EMBO Rep 2015; 16:1145-63. [PMID: 26232272 PMCID: PMC4576983 DOI: 10.15252/embr.201540759] [Citation(s) in RCA: 216] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 07/08/2015] [Accepted: 07/09/2015] [Indexed: 12/20/2022] Open
Abstract
BNip3 is a hypoxia-inducible protein that targets mitochondria for autophagosomal degradation. We report a novel tumor suppressor role for BNip3 in a clinically relevant mouse model of mammary tumorigenesis. BNip3 delays primary mammary tumor growth and progression by preventing the accumulation of dysfunctional mitochondria and resultant excess ROS production. In the absence of BNip3, mammary tumor cells are unable to reduce mitochondrial mass effectively and elevated mitochondrial ROS increases the expression of Hif-1α and Hif target genes, including those involved in glycolysis and angiogenesis—two processes that are also markedly increased in BNip3-null tumors. Glycolysis inhibition attenuates the growth of BNip3-null tumor cells, revealing an increased dependence on autophagy for survival. We also demonstrate that BNIP3 deletion can be used as a prognostic marker of tumor progression to metastasis in human triple-negative breast cancer (TNBC). These studies show that mitochondrial dysfunction—caused by defects in mitophagy—can promote the Warburg effect and tumor progression, and suggest better approaches to stratifying TNBC for treatment.
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Affiliation(s)
- Aparajita H Chourasia
- The Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA The Committee on Cancer Biology, Chicago, IL, USA
| | - Kristin Tracy
- The Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA The Committee on Cancer Biology, Chicago, IL, USA
| | - Casey Frankenberger
- The Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA
| | - Michelle L Boland
- The Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA The Committee on Molecular Metabolism and Nutrition, Chicago, IL, USA
| | - Marina N Sharifi
- The Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA The Committee on Cancer Biology, Chicago, IL, USA
| | - Lauren E Drake
- The Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA The Committee on Molecular Pathogenesis & Molecular Medicine, Chicago, IL, USA
| | | | - John M Asara
- Division of Signal Transduction, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Jason W Locasale
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA
| | | | - Kay F Macleod
- The Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA The Committee on Cancer Biology, Chicago, IL, USA The Committee on Molecular Metabolism and Nutrition, Chicago, IL, USA
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Abstract
Mitophagy is a selective form of macro-autophagy in which mitochondria are selectively targeted for degradation in autophagolysosomes. Mitophagy can have the beneficial effect of eliminating old and/or damaged mitochondria, thus maintaining the integrity of the mitochondrial pool. However, mitophagy is not only limited to the turnover of dysfunctional mitochondria but also promotes reduction of overall mitochondrial mass in response to certain stresses, such as hypoxia and nutrient starvation. This prevents generation of reactive oxygen species and conserves valuable nutrients (such as oxygen) from being consumed inefficiently, thereby promoting cellular survival under conditions of energetic stress. The failure to properly modulate mitochondrial turnover in response to oncogenic stresses has been implicated both positively and negatively in tumorigenesis, while the potential of targeting mitophagy specifically as opposed to autophagy in general as a therapeutic strategy remains to be explored. The challenges and opportunities that come with our heightened understanding of the role of mitophagy in cancer are reviewed here.
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Affiliation(s)
- Aparajita H Chourasia
- The Ben May Department for Cancer Research, The University of Chicago, 929 East 57th Street, Chicago, IL 60637 USA ; The Committee on Cancer Biology, The University of Chicago, 929 East 57th Street, Chicago, IL 60637 USA
| | - Michelle L Boland
- The Ben May Department for Cancer Research, The University of Chicago, 929 East 57th Street, Chicago, IL 60637 USA ; The Committee on Molecular Metabolism & Nutrition, 929 East 57th Street, Chicago, IL 60637 USA
| | - Kay F Macleod
- The Ben May Department for Cancer Research, The University of Chicago, 929 East 57th Street, Chicago, IL 60637 USA ; The Committee on Cancer Biology, The University of Chicago, 929 East 57th Street, Chicago, IL 60637 USA ; The Committee on Molecular Metabolism & Nutrition, 929 East 57th Street, Chicago, IL 60637 USA ; The Ben May Department for Cancer Research, The University of Chicago Comprehensive Cancer Center, The Gordon Center for Integrative Sciences, W338 929 East 57th Street, Chicago, IL 60637 USA
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Synergism of arsenic trioxide and MG132 in Raji cells attained by targeting BNIP3, autophagy, and mitochondria with low doses of valproic acid and vincristine. Eur J Cancer 2014; 50:3243-61. [DOI: 10.1016/j.ejca.2014.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 08/30/2014] [Accepted: 09/20/2014] [Indexed: 12/20/2022]
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Structure, function, and epigenetic regulation of BNIP3: a pathophysiological relevance. Mol Biol Rep 2014; 41:7705-14. [PMID: 25096512 DOI: 10.1007/s11033-014-3664-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 07/27/2014] [Indexed: 12/31/2022]
Abstract
BCL-2 [B-cell leukemia/lymphoma 2]/adenovirus E1B 19KD interacting protein 3 (BNIP3) is an atypical BH3 domain only containing member of Bcl2 family of proteins. BNIP3 is known to be involved in various cellular processes depending on the cell type and conditions and also shown to play a role in various disease conditions including myocardial ischemia, autophagy and apoptosis. Though its role in autophagy and its pro-death activity have been reported in various studies, recent findings have shown its contradictory role in the regulation of these cellular processes. The various studies have shown its epigenetic regulation in disease development and progression and also found to be cytoprotective. In this review, we have focused on the structural and functional aspects of BNIP3 in relation to recent advances of its role in autophagy and apoptosis. Also its role of epigenetic regulation of several genes involved in various diseases was also discussed.
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39
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Mitochondrial-targeted curcuminoids: a strategy to enhance bioavailability and anticancer efficacy of curcumin. PLoS One 2014; 9:e89351. [PMID: 24622734 PMCID: PMC3951186 DOI: 10.1371/journal.pone.0089351] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Accepted: 01/20/2014] [Indexed: 12/19/2022] Open
Abstract
Although the anti-cancer effects of curcumin has been shown in various cancer cell types, in vitro, pre-clinical and clinical studies showed only a limited efficacy, even at high doses. This is presumably due to low bioavailability in both plasma and tissues, particularly due to poor intracellular accumulation. A variety of methods have been developed to achieve the selective targeting of drugs to cells and mitochondrion. We used a novel approach by conjugation of curcumin to lipophilic triphenylphosphonium (TPP) cation to facilitate delivery of curcumin to mitochondria. TPP is selectively taken up by mitochondria driven by the membrane potential by several hundred folds. In this study, three mitocurcuminoids (mitocurcuminoids-1, 2, and 3) were successfully synthesized by tagging TPP to curcumin at different positions. ESI-MS analysis showed significantly higher uptake of the mitocurcuminoids in mitochondria as compared to curcumin in MCF-7 breast cancer cells. All three mitocurcuminoids exhibited significant cytotoxicity to MCF-7, MDA-MB-231, SKNSH, DU-145, and HeLa cancer cells with minimal effect on normal mammary epithelial cells (MCF-10A). The IC50 was much lower for mitocurcuminoids when compared to curcumin. The mitocurcuminoids induced significant ROS generation, a drop in ΔØm, cell-cycle arrest and apoptosis. They inhibited Akt and STAT3 phosphorylation and increased ERK phosphorylation. Mitocurcuminoids also showed upregulation of pro-apoptotic BNIP3 expression. In conclusion, the results of this study indicated that mitocurcuminoids show substantial promise for further development as a potential agent for the treatment of various cancers.
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Boland ML, Chourasia AH, Macleod KF. Mitochondrial dysfunction in cancer. Front Oncol 2013; 3:292. [PMID: 24350057 PMCID: PMC3844930 DOI: 10.3389/fonc.2013.00292] [Citation(s) in RCA: 320] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 11/17/2013] [Indexed: 12/18/2022] Open
Abstract
A mechanistic understanding of how mitochondrial dysfunction contributes to cell growth and tumorigenesis is emerging beyond Warburg as an area of research that is under-explored in terms of its significance for clinical management of cancer. Work discussed in this review focuses less on the Warburg effect and more on mitochondria and how dysfunctional mitochondria modulate cell cycle, gene expression, metabolism, cell viability, and other established aspects of cell growth and stress responses. There is increasing evidence that key oncogenes and tumor suppressors modulate mitochondrial dynamics through important signaling pathways and that mitochondrial mass and function vary between tumors and individuals but the significance of these events for cancer are not fully appreciated. We explore the interplay between key molecules involved in mitochondrial fission and fusion and in apoptosis, as well as in mitophagy, biogenesis, and spatial dynamics of mitochondria and consider how these distinct mechanisms are coordinated in response to physiological stresses such as hypoxia and nutrient deprivation. Importantly, we examine how deregulation of these processes in cancer has knock on effects for cell proliferation and growth. We define major forms of mitochondrial dysfunction and address the extent to which the functional consequences of such dysfunction can be determined and exploited for cancer diagnosis and treatment.
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Affiliation(s)
- Michelle L Boland
- The Ben May Department for Cancer Research, The University of Chicago , Chicago, IL , USA ; Committee on Molecular Metabolism and Nutrition, The University of Chicago , Chicago, IL , USA
| | - Aparajita H Chourasia
- The Ben May Department for Cancer Research, The University of Chicago , Chicago, IL , USA ; Committee on Cancer Biology, The University of Chicago , Chicago, IL , USA
| | - Kay F Macleod
- The Ben May Department for Cancer Research, The University of Chicago , Chicago, IL , USA ; Committee on Molecular Metabolism and Nutrition, The University of Chicago , Chicago, IL , USA ; Committee on Cancer Biology, The University of Chicago , Chicago, IL , USA
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41
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Diede SJ, Yao Z, Keyes CC, Tyler AE, Dey J, Hackett CS, Elsaesser K, Kemp CJ, Neiman PE, Weiss WA, Olson JM, Tapscott SJ. Fundamental differences in promoter CpG island DNA hypermethylation between human cancer and genetically engineered mouse models of cancer. Epigenetics 2013; 8:1254-60. [PMID: 24107773 DOI: 10.4161/epi.26486] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Genetic and epigenetic alterations are essential for the initiation and progression of human cancer. We previously reported that primary human medulloblastomas showed extensive cancer-specific CpG island DNA hypermethylation in critical developmental pathways. To determine whether genetically engineered mouse models (GEMMs) of medulloblastoma have comparable epigenetic changes, we assessed genome-wide DNA methylation in three mouse models of medulloblastoma. In contrast to human samples, very few loci with cancer-specific DNA hypermethylation were detected, and in almost all cases the degree of methylation was relatively modest compared with the dense hypermethylation in the human cancers. To determine if this finding was common to other GEMMs, we examined a Burkitt lymphoma and breast cancer model and did not detect promoter CpG island DNA hypermethylation, suggesting that human cancers and at least some GEMMs are fundamentally different with respect to this epigenetic modification. These findings provide an opportunity to both better understand the mechanism of aberrant DNA methylation in human cancer and construct better GEMMs to serve as preclinical platforms for therapy development.
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Affiliation(s)
- Scott J Diede
- Division of Clinical Research; Fred Hutchinson Cancer Research Center; Seattle, WA USA; Department of Pediatrics; University of Washington School of Medicine; Seattle, WA USA
| | - Zizhen Yao
- Division of Human Biology; Fred Hutchinson Cancer Research Center; Seattle, WA USA
| | - C Chip Keyes
- Division of Human Biology; Fred Hutchinson Cancer Research Center; Seattle, WA USA
| | - Ashlee E Tyler
- Division of Human Biology; Fred Hutchinson Cancer Research Center; Seattle, WA USA
| | - Joyoti Dey
- Division of Clinical Research; Fred Hutchinson Cancer Research Center; Seattle, WA USA
| | - Christopher S Hackett
- Department of Neurological Surgery; University of California at San Francisco; San Francisco, CA USA; Department of Neurology; University of California at San Francisco; San Francisco, CA USA; Department of Pediatrics; University of California at San Francisco; San Francisco, CA USA
| | - Katrina Elsaesser
- Division of Basic Sciences; Fred Hutchinson Cancer Research Center; Seattle, WA USA
| | - Christopher J Kemp
- Division of Basic Sciences; Fred Hutchinson Cancer Research Center; Seattle, WA USA; Division of Public Health Sciences; Fred Hutchinson Cancer Research Center; Seattle, WA USA
| | - Paul E Neiman
- Division of Basic Sciences; Fred Hutchinson Cancer Research Center; Seattle, WA USA; Department of Medicine; University of Washington School of Medicine; Seattle, WA USA
| | - William A Weiss
- Department of Neurological Surgery; University of California at San Francisco; San Francisco, CA USA; Department of Neurology; University of California at San Francisco; San Francisco, CA USA; Department of Pediatrics; University of California at San Francisco; San Francisco, CA USA
| | - James M Olson
- Division of Clinical Research; Fred Hutchinson Cancer Research Center; Seattle, WA USA; Department of Pediatrics; University of Washington School of Medicine; Seattle, WA USA
| | - Stephen J Tapscott
- Division of Clinical Research; Fred Hutchinson Cancer Research Center; Seattle, WA USA; Division of Human Biology; Fred Hutchinson Cancer Research Center; Seattle, WA USA; Department of Neurology; University of Washington School of Medicine; Seattle, WA USA
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42
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Deng Q, Huang CM, Chen N, Li L, Wang XD, Zhang W, Bi F, Tang QL, Li ZP, Wang W. Chemotherapy and radiotherapy downregulate the activity and expression of DNA methyltransferase and enhance Bcl-2/E1B-19-kDa interacting protein-3-induced apoptosis in human colorectal cancer cells. Chemotherapy 2013; 58:445-53. [PMID: 23364257 DOI: 10.1159/000345916] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Accepted: 11/18/2012] [Indexed: 02/05/2023]
Abstract
Bcl-2/E1B 19-kDa interacting protein 3 (BNIP3) is a proapoptotic protein whose expression level is often low in colorectal cancer (CRC) cells due to the BNIP3 gene promoter DNA methylation by DNA methyltransferase (DNMT). It is known that chemotherapy and radiotherapy suppress CRC through inducing tumor apoptosis. However, the molecular mechanisms underlying chemotherapy and radiotherapy-induced apoptosis of CRC cells are not well defined. In this study, we observed that the expression level of BNIP3 in colon cancer cells was significantly increased by treatment with therapeutic agents and radiation in vitro. The BNIP3 protein level in CRC tissues from patients who received preoperative concurrent chemotherapy was significantly higher than in those who received surgery alone. Furthermore, treatment with chemotherapeutic agents and radiation significantly decreased the DNMT1 expression level and enzymatic activity. Both expression level and activity of DNMT1 were inversely correlated with the expression level of BNIP3 in colon carcinoma cells after treatment with chemotherapeutic agents and radiation. Consistent with increased BNIP3 expression, chemotherapeutic agents and radiation induced colon carcinoma cell apoptosis in a dose-dependent manner. Based on these observations, we conclude that chemotherapy and radiotherapy inhibit DNMT1 expression to upregulate BNIP3 expression to promote CRC cell apoptosis. And, BNIP3 may play a role in the caspase-dependent apoptosis pathways, mainly during treatment with chemotherapy and radiotherapy.
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Affiliation(s)
- Qian Deng
- Department of Abdomen Oncology, Cancer Center of West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, PR China
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43
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Aoki Y, Nojima M, Suzuki H, Yasui H, Maruyama R, Yamamoto E, Ashida M, Itagaki M, Asaoku H, Ikeda H, Hayashi T, Imai K, Mori M, Tokino T, Ishida T, Toyota M, Shinomura Y. Genomic vulnerability to LINE-1 hypomethylation is a potential determinant of the clinicogenetic features of multiple myeloma. Genome Med 2012; 4:101. [PMID: 23259664 PMCID: PMC4064317 DOI: 10.1186/gm402] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 12/12/2012] [Accepted: 12/22/2012] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The aim of this study was to clarify the role of global hypomethylation of repetitive elements in determining the genetic and clinical features of multiple myeloma (MM). METHODS We assessed global methylation levels using four repetitive elements (long interspersed nuclear element-1 (LINE-1), Alu Ya5, Alu Yb8, and Satellite-α) in clinical samples comprising 74 MM samples and 11 benign control samples (7 cases of monoclonal gammopathy of undetermined significance (MGUS) and 4 samples of normal plasma cells (NPC)). We also evaluated copy-number alterations using array-based comparative genomic hybridization, and performed methyl-CpG binding domain sequencing (MBD-seq). RESULTS Global levels of the repetitive-element methylation declined with the degree of malignancy of plasma cells (NPC>MGUS>MM), and there was a significant inverse correlation between the degree of genomic loss and the LINE-1 methylation levels. We identified 80 genomic loci as common breakpoints (CBPs) around commonly lost regions, which were significantly associated with increased LINE-1 densities. MBD-seq analysis revealed that average DNA-methylation levels at the CBP loci and relative methylation levels in regions with higher LINE-1 densities also declined during the development of MM. We confirmed that levels of methylation of the 5' untranslated region of respective LINE-1 loci correlated strongly with global LINE-1 methylation levels. Finally, there was a significant association between LINE-1 hypomethylation and poorer overall survival (hazard ratio 2.8, P = 0.015). CONCLUSION Global hypomethylation of LINE-1 is associated with the progression of and poorer prognosis for MM, possibly due to frequent copy-number loss.
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Affiliation(s)
- Yuka Aoki
- First Department of Internal Medicine, Sapporo Medical University School of Medicine, S1, W16, Chuo-Ku, Sapporo 060-8543, Japan
| | - Masanori Nojima
- Department of Public Health, Sapporo Medical University School of Medicine, S1, W17, Chuo-ku, Sapporo 060-8556, Japan
| | - Hiromu Suzuki
- Department of Molecular Biology, Sapporo Medical University School of Medicine, S1, W17, Chuo-ku, Sapporo 060-8556, Japan
| | - Hiroshi Yasui
- First Department of Internal Medicine, Sapporo Medical University School of Medicine, S1, W16, Chuo-Ku, Sapporo 060-8543, Japan ; Department of Regional Health Care and Medicine, Sapporo Medical University School of Medicine, S1, W17, Chuo-ku, Sapporo 060-8556, Japan
| | - Reo Maruyama
- Department of Molecular Biology, Sapporo Medical University School of Medicine, S1, W17, Chuo-ku, Sapporo 060-8556, Japan
| | - Eiichiro Yamamoto
- First Department of Internal Medicine, Sapporo Medical University School of Medicine, S1, W16, Chuo-Ku, Sapporo 060-8543, Japan
| | - Masami Ashida
- Department of Molecular Biology, Sapporo Medical University School of Medicine, S1, W17, Chuo-ku, Sapporo 060-8556, Japan
| | - Mitsuhiro Itagaki
- Department of Hematology, Hiroshima Red Cross and Atomic-bomb Survivors Hospital, 1-9-6 Senda-cho, Hiroshima 730-8619, Japan
| | - Hideki Asaoku
- Department of Clinical Laboratory, Hiroshima Red Cross and Atomic-bomb Survivors Hospital, 1-9-6 Senda-cho, Naka-ku, Hiroshima 730-8619, Japan
| | - Hiroshi Ikeda
- First Department of Internal Medicine, Sapporo Medical University School of Medicine, S1, W16, Chuo-Ku, Sapporo 060-8543, Japan
| | - Toshiaki Hayashi
- First Department of Internal Medicine, Sapporo Medical University School of Medicine, S1, W16, Chuo-Ku, Sapporo 060-8543, Japan
| | - Kohzoh Imai
- Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Mitsuru Mori
- Department of Public Health, Sapporo Medical University School of Medicine, S1, W17, Chuo-ku, Sapporo 060-8556, Japan
| | - Takashi Tokino
- Division of Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, S1, W17, Chuo-ku, Sapporo 060-8556, Japan
| | - Tadao Ishida
- First Department of Internal Medicine, Sapporo Medical University School of Medicine, S1, W16, Chuo-Ku, Sapporo 060-8543, Japan
| | - Minoru Toyota
- Department of Molecular Biology, Sapporo Medical University School of Medicine, S1, W17, Chuo-ku, Sapporo 060-8556, Japan
| | - Yasuhisa Shinomura
- First Department of Internal Medicine, Sapporo Medical University School of Medicine, S1, W16, Chuo-Ku, Sapporo 060-8543, Japan
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Oxidative stress in coronary artery disease: epigenetic perspective. Mol Cell Biochem 2012; 374:203-11. [DOI: 10.1007/s11010-012-1520-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 11/07/2012] [Indexed: 01/24/2023]
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45
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Wang Z, Huang C, Zeng J, Deng Q, Zeng H, Liu Z, Peng X, Bi F, Tang Q, Li Z. Effects of the proapoptotic regulator Bcl-2/adenovirus EIB 19-kDa-interacting protein 3 on the chemosensitivity of human colon cancer cell lines. Oncol Lett 2012. [PMID: 23205118 DOI: 10.3892/ol.2012.933] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
In the clinical setting, drug resistance remains a significant obstacle for successful chemotherapy. Bcl-2/adenovirus EIB 19-kDa-interacting protein 3 (BNIP3) is a proapoptotic member of the Bcl-2 family. To address its potential as a therapeutic target for chemosensitisation, this study investigated the effect of BNIP3 expression on chemosensitivity and reversal of oxaliplatin (L-OHP) resistance in human colon cancer cell lines. A plasmid expressing the BNIP3 gene was transfected into human parental colon cancer cell lines (SW620 and colo320) and L-OHP-resistant colon cancer cell lines (SW620/L-OHP and colo320/L-OHP) using Lipofectamine™ 2000, and the transfection efficiency was determined using fluorescence optics. Western blot analysis identified that SW620/L-OHP and colo320/L-OHP cells expressed lower levels of BNIP3 protein compared with the SW620 and colo320 cells. Transfection with the recombinant BNIP3 plasmid revealed an increase in BNIP3 expression in tumour cells. Following transfection with pDsRed-BNIP3, the chemosensitivity of parental and L-OHP-resistant cell lines to L-OHP was increased (P<0.01), as detected by the Cell Counting Kit-8 (CCK8) assay. Hoechst 33342 staining and flow cytometry revealed that the effects on L-OHP-induced apoptosis were enhanced by the overexpression of BNIP3. Chemosensitisation in human colon cancer cells was observed following treatment with the recombinant BNIP3 plasmid in vitro. The results of this study suggest that BNIP3 is a potential therapeutic target for reversing the resistance of L-OHP-resistant colon cancer cells to L-OHP.
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Affiliation(s)
- Zi Wang
- Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041
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46
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Yasui H, Ishida T, Maruyama R, Nojima M, Ikeda H, Suzuki H, Hayashi T, Shinomura Y, Imai K. Model of translational cancer research in multiple myeloma. Cancer Sci 2012; 103:1907-12. [PMID: 22809142 PMCID: PMC3533800 DOI: 10.1111/j.1349-7006.2012.02384.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2012] [Revised: 07/09/2012] [Accepted: 07/11/2012] [Indexed: 11/30/2022] Open
Abstract
Recently, intensive laboratory and preclinical studies have identified and validated therapeutic molecular targets in multiple myeloma (MM). The introduction of novel agents such as the proteasome inhibitor bortezomib and the immunomodulatory drugs thalidomide and lenalidomide, which were rapidly translated from preclinical studies at the Dana-Farber Cancer Institute into clinical trials, has changed the treatment paradigm and markedly extended overall survival; MM has therefore become a remarkable example of translational cancer research in new drug development. In this article, with the aim of determining the key factors underlying success in translational research, we focus on our studies of MM at Dana-Farber Cancer Institute as well as at our institutes. The identification of these key factors will help to promote translational cancer research not only in MM but also in other hematologic malignancies and solid tumors, to develop novel therapies, to overcome drug resistance, and to thereby improve the prognosis of cancer patients. (Cancer Sci, doi: 10.1111/j.1349-7006.2012.02384.x, 2012)
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Affiliation(s)
- Hiroshi Yasui
- First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan; Department of Regional Health Care and Medicine, Sapporo Medical University, Sapporo, Japan.
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47
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Florean C, Schnekenburger M, Grandjenette C, Dicato M, Diederich M. Epigenomics of leukemia: from mechanisms to therapeutic applications. Epigenomics 2012; 3:581-609. [PMID: 22126248 DOI: 10.2217/epi.11.73] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Leukemogenesis is a multistep process in which successive transformational events enhance the ability of a clonal population arising from hematopoietic progenitor cells to proliferate, differentiate and survive. Clinically and pathologically, leukemia is subdivided into four main categories: chronic lymphocytic leukemia, chronic myeloid leukemia, acute lymphocytic leukemia and acute myeloid leukemia. Leukemia has been previously considered only as a genetic disease. However, in recent years, significant advances have been made in the elucidation of the leukemogenesis-associated processes. Thus, we have come to understand that epigenetic alterations including DNA methylation, histone modifications and miRNA are involved in the permanent changes of gene expression controlling the leukemia phenotype. In this article, we will focus on the epigenetic defects associated with leukemia and their implications as biomarkers for diagnostic, prognostic and therapeutic applications.
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Affiliation(s)
- Cristina Florean
- Laboratoire de Biologie Moléculaire et Cellulaire de Cancer, Hôpital Kirchberg, 9, rue Edward Steichen, L-2540 Luxembourg, Luxembourg
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48
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Melvin A, Rocha S. Chromatin as an oxygen sensor and active player in the hypoxia response. Cell Signal 2012; 24:35-43. [PMID: 21924352 PMCID: PMC3476533 DOI: 10.1016/j.cellsig.2011.08.019] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Accepted: 08/29/2011] [Indexed: 12/28/2022]
Abstract
Changes in the availability or demand for oxygen induce dramatic changes at the cellular level. Primarily, activation of a family of oxygen labile transcription factors, Hypoxia Inducible Factor (HIF), initiates a variety of cellular processes required to re-instate oxygen homeostasis. Oxygen is sensed by molecular dioxygenases in cells, such as the prolyl-hydroxylases (PHDs), enzymes which are responsible for the oxygen-dependent regulation of HIF. As HIF is a transcription factor it must bind DNA sequences of its target genes possibly in the context of a complex chromatin structure. How chromatin structure changes in response to hypoxia is currently unknown. However, the identification of a novel class of histone demethylases as true dioxygenases suggests that chromatin can act as an oxygen sensor and plays an active role in the coordination of the cellular response to hypoxia. This review will discuss the current knowledge on how hypoxia engages with different proteins involved in chromatin organisation and dynamics.
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Key Words
- hif, hypoxia inducible factor
- arnt, aryl hydrocarbon nuclear translocator
- vhl, von hippel lindau
- phd, prolyl-hydroxylase
- fih, factor inhibiting hif
- chip, chromatin immunoprecipitation
- swi/snf, switch/sucrose nonfermentable
- iswi, imitation switch
- chd, chromodomain helicase dna-binding
- nurf, nucleosome remodelling factor
- chrac, chromatin remodelling and assembly complex
- acf, atp-utilising chromatin remodelling and assembly factor
- norc, nucleolar remodelling complex
- rsf, remodelling and spacing factor
- wich, wstf–iswi chromatin remodelling complex
- nurd, nucleosome remodelling and histone deacetylase
- srcap, snf2-related cbp activator protein
- trrap, transformation/transcription domain-associated protein/tip60
- hat, histone acetyl transferase
- hdac, histone deacetylase
- lsd1, lysine-specific demethylase-1
- jmjc, jumonji c domain
- hypoxia
- chromatin
- hif
- transcription
- chromatin remodellers
- jmjc demethylases
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Affiliation(s)
| | - Sonia Rocha
- Wellcome Trust Centre for Gene Regulation and Expression, College of Life Sciences, MSI/WTB/JBC Complex, Dow Street, University of Dundee, Dundee, DD1 5EH, Scotland, United Kingdom
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Bcl-2/adenovirus E1B 19 kDa-interacting protein 3 (BNIP3) expression is epigenetically regulated by one-carbon metabolism in invasive duct cell carcinoma of breast. Mol Cell Biochem 2011; 361:189-95. [PMID: 21987236 DOI: 10.1007/s11010-011-1103-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Accepted: 09/28/2011] [Indexed: 12/29/2022]
Abstract
In view of recent studies highlighting the prognostic relevance of expression and CpG island methylator phenotype (CIMP) of Bcl-2/adenovirus E1B 19 kDa-interacting protein 3 (BNIP3) in invasive duct cell carcinoma (IDC), we hypothesized in this article that impaired one-carbon metabolism might influence CIMP phenotype of BNIP3. In order to substantiate the prognostic relevance of BNIP3, we explored its association with 8-oxo-2'deoxyguanosine (8-oxodG), a marker of oxidative stress with prognostic relevance. BNIP3 expression and CIMP phenotype were studied using semi-quantitative RT-PCR and combined bisulfite restriction analysis (COBRA), respectively, in 56 IDC tumors. Eight polymorphisms in one-carbon metabolism were studied using PCR-RFLP and PCR-AFLP approaches. 8-oxodG was measured using competitive ELISA kit. BNIP3 was found to be upregulated in IDC (cases vs. controls: 0.94 ± 0.05 vs. 0.18 ± 0.08, P < 0.0001). COBRA analysis confirmed hypomethylation of BNIP3 promoter CpG island in these cases. CIMP phenotype of BNIP3 showed positive association with tubule formation (P = 0.034) and methionine synthase reductase (MTRR) A66G (P = 0.002); inverse association with cytosolic serine hydroxyl methyltransferase (cSHMT) C1420T (P < 0.005) and 8-oxodG (<10% vs. >10% methylation: 7.24 ± 2.77 ng/ml vs. 4.42 ± 2.93 ng/ml, P < 0.0005); and no association with nuclear pleomorphism or mitotic index or ER, PR, and HER statuses. Synergistic effect of MTR A2756G and MTRR A66G variants on BNIP3 hypermethylator phenotype was clearly evident (P < 0.0007). MTRR A66G and cSHMT C1420T polymorphisms influence CIMP phenotype of BNIP3, thus epigenetically regulating BNIP3 in breast cancer. The linear association between BNIP3 and 8-oxodG substantiates the role of BNIP3 as redox sensor as well as prognostic marker in breast cancer.
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50
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Wang Z, Huang CM, Deng Q, Zeng H, Wang X, Zhang S, Bi F, Tang QL, Zhong RM, Li AJ, He YB, Chen N, Li ZP, Wang W. Effects of the proapoptotic regulator Bcl2/adenovirus EIB 19 kDa-interacting protein 3 on radiosensitivity of cervical cancer. Cancer Biother Radiopharm 2011; 26:279-86. [PMID: 21711117 DOI: 10.1089/cbr.2010.0898] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
PURPOSE Bcl2/adenovirus EIB 19 kDa-interacting protein 3 (BNIP3) is a proapoptotic member of the Bcl-2 family. To address its potential as a therapeutic target for radiosensitization, this study investigated the effect of Bnip3 expression on radiosensitivity of cervical cancer in vitro and in vivo. MATERIALS AND METHODS In vitro: A plasmid expressing the BNIP3 gene was transfected into human cervical cancer HeLa cells using Lipofectamine(2000), and western blot and immunohistochemistry analysis were performed to evaluate the expression of BNIP3 in transfected cells. The effects on radiation-induced apoptosis were investigated using a clone formation assay and flow cytometry. In vivo: A total of 6 × 10⁶ HeLa cells were subcutaneously inoculated into the dorsal flank of nude mice, and plasmids expressing the BNIP3 gene were injected into the mice via the tail vein. Tumor volume was calculated, and immunohistochemistry was used to detect the expression of BNIP3 in tumor cells. TUNEL assays were performed to determine the apoptosis rates in tumor tissues. RESULTS Transfection with the recombinant BNIP3 plasmid increased expression of the Bnip3 protein in tumor cells. This apoptosis regulator significantly decreased the viability of cells (p < 0.01) and increased the apoptosis rates (p < 0.01) both in vitro and in vivo. The antitumor effect of radiotherapy was enhanced by overexpression of BNIP3, as revealed by tumor growth curve analysis. CONCLUSIONS Radiosensitization in human cervical cancer cells was observed after treatment with the recombinant BNIP3 plasmid in vitro and in vivo. Results suggested that BNIP3 may play a role in enhancement of radiotherapy efficiency, and its expression may have a synergistic effect on radiation treatments.
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Affiliation(s)
- Zi Wang
- Department of Radiation Oncology, Cancer Center of West China Hospital, Sichuan University, Chengdu, Sichuan, China
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