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Dreute J, Pfisterer M, Schmitz ML. A reductionist perspective on HIF-1α's role in cell proliferation under non-hypoxic conditions. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119683. [PMID: 38301905 DOI: 10.1016/j.bbamcr.2024.119683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 02/03/2024]
Abstract
The role of hypoxia-inducible factor (HIF)-1α in the control of proliferation under non-hypoxic conditions has been investigated in numerous studies, but does not yield a coherent picture. Therefore, we conducted this meta-analysis of existing literature to systematically evaluate the role of HIF-1α, based on a number of inclusion and exclusion criteria. Studies analyzing non-transformed, primary cells showed a largely heterogeneous distribution of pro-proliferative, anti-proliferative or absent functions for HIF-1α, which are co-determined by several parameters, including the type and age of the cell and its localization in tissues and organs. In contrast, the analyses of tumor cells showed a predominantly pro-proliferative role of HIF-1α by cell-intrinsic and cell-extrinsic molecular mechanism not yet understood.
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Affiliation(s)
- Jan Dreute
- Institute of Biochemistry, Justus-Liebig-University Giessen, Germany
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2
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Kimura K, Jackson TLB, Huang RCC. Interaction and Collaboration of SP1, HIF-1, and MYC in Regulating the Expression of Cancer-Related Genes to Further Enhance Anticancer Drug Development. Curr Issues Mol Biol 2023; 45:9262-9283. [PMID: 37998757 PMCID: PMC10670631 DOI: 10.3390/cimb45110580] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/09/2023] [Accepted: 11/11/2023] [Indexed: 11/25/2023] Open
Abstract
Specificity protein 1 (SP1), hypoxia-inducible factor 1 (HIF-1), and MYC are important transcription factors (TFs). SP1, a constitutively expressed housekeeping gene, regulates diverse yet distinct biological activities; MYC is a master regulator of all key cellular activities including cell metabolism and proliferation; and HIF-1, whose protein level is rapidly increased when the local tissue oxygen concentration decreases, functions as a mediator of hypoxic signals. Systems analyses of the regulatory networks in cancer have shown that SP1, HIF-1, and MYC belong to a group of TFs that function as master regulators of cancer. Therefore, the contributions of these TFs are crucial to the development of cancer. SP1, HIF-1, and MYC are often overexpressed in tumors, which indicates the importance of their roles in the development of cancer. Thus, proper manipulation of SP1, HIF-1, and MYC by appropriate agents could have a strong negative impact on cancer development. Under these circumstances, these TFs have naturally become major targets for anticancer drug development. Accordingly, there are currently many SP1 or HIF-1 inhibitors available; however, designing efficient MYC inhibitors has been extremely difficult. Studies have shown that SP1, HIF-1, and MYC modulate the expression of each other and collaborate to regulate the expression of numerous genes. In this review, we provide an overview of the interactions and collaborations of SP1, HIF1A, and MYC in the regulation of various cancer-related genes, and their potential implications in the development of anticancer therapy.
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Affiliation(s)
| | | | - Ru Chih C. Huang
- Department of Biology, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218-2685, USA
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3
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Mohamed BM, Ward MP, Bates M, Spillane CD, Kelly T, Martin C, Gallagher M, Heffernan S, Norris L, Kennedy J, Saadeh FA, Gleeson N, Brooks DA, Brooks RD, Selemidis S, O'Toole S, O'Leary JJ. Ex vivo expansion of circulating tumour cells (CTCs). Sci Rep 2023; 13:3704. [PMID: 36879003 PMCID: PMC9988863 DOI: 10.1038/s41598-023-30733-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
Circulating tumour cells (CTCs) are a critical intermediate step in the process of cancer metastasis. The reliability of CTC isolation/purification has limited both the potential to report on metastatic progression and the development of CTCs as targets for therapeutic intervention. Here we report a new methodology, which optimises the culture conditions for CTCs using primary cancer cells as a model system. We exploited the known biology that CTCs thrive in hypoxic conditions, with their survival and proliferation being reliant on the activation of hypoxia-inducible factor 1 alpha (HIF-1α). We isolated epithelial-like and quasi-mesenchymal CTC phenotypes from the blood of a cancer patient and successfully cultured these cells for more than 8 weeks. The presence of CTC clusters was required to establish and maintain long-term cultures. This novel methodology for the long-term culture of CTCs will aid in the development of downstream applications, including CTC theranostics.
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Affiliation(s)
- Bashir M Mohamed
- Department of Histopathology, Trinity College Dublin, Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland. .,Trinity St James's Cancer Institute, Dublin 8, Ireland. .,Department of Obstetrics and Gynaecology, Trinity College Dublin, Dublin, Ireland.
| | - Mark P Ward
- Department of Histopathology, Trinity College Dublin, Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland.,Trinity St James's Cancer Institute, Dublin 8, Ireland
| | - Mark Bates
- Department of Histopathology, Trinity College Dublin, Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland.,Trinity St James's Cancer Institute, Dublin 8, Ireland
| | - Cathy D Spillane
- Department of Histopathology, Trinity College Dublin, Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland.,Trinity St James's Cancer Institute, Dublin 8, Ireland
| | - Tanya Kelly
- Department of Histopathology, Trinity College Dublin, Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland.,Trinity St James's Cancer Institute, Dublin 8, Ireland
| | - Cara Martin
- Department of Histopathology, Trinity College Dublin, Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland.,Trinity St James's Cancer Institute, Dublin 8, Ireland
| | - Michael Gallagher
- Department of Histopathology, Trinity College Dublin, Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland.,Trinity St James's Cancer Institute, Dublin 8, Ireland
| | - Sheena Heffernan
- Department of Histopathology, Trinity College Dublin, Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland.,Trinity St James's Cancer Institute, Dublin 8, Ireland
| | - Lucy Norris
- Department of Obstetrics and Gynaecology, Trinity College Dublin, Dublin, Ireland
| | - John Kennedy
- HOPE Directorate, St. James's Hospital, Dublin 8, Ireland
| | - Feras Abu Saadeh
- Division of Gynaecological Oncology, St. James's Hospital, Dublin 8, Ireland
| | - Noreen Gleeson
- Division of Gynaecological Oncology, St. James's Hospital, Dublin 8, Ireland
| | - Doug A Brooks
- Department of Histopathology, Trinity College Dublin, Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland.,Trinity St James's Cancer Institute, Dublin 8, Ireland.,Clinical and Health Sciences, University of South Australia, Adelaide, SA, 5001, Australia
| | - Robert D Brooks
- Clinical and Health Sciences, University of South Australia, Adelaide, SA, 5001, Australia
| | - Stavros Selemidis
- School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, 3083, Australia
| | - Sharon O'Toole
- Department of Histopathology, Trinity College Dublin, Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland.,Trinity St James's Cancer Institute, Dublin 8, Ireland.,Department of Obstetrics and Gynaecology, Trinity College Dublin, Dublin, Ireland
| | - John J O'Leary
- Department of Histopathology, Trinity College Dublin, Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland.,Trinity St James's Cancer Institute, Dublin 8, Ireland
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4
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Su W, Hong T, Feng B, Yang Z, Lei G. A unique regulated cell death-related classification regarding prognosis and immune landscapes in non-small cell lung cancer. Front Immunol 2023; 14:1075848. [PMID: 36817452 PMCID: PMC9936314 DOI: 10.3389/fimmu.2023.1075848] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 01/17/2023] [Indexed: 02/05/2023] Open
Abstract
Regulated cell death (RCD) contributes to reshaping the tumor immune microenvironment and participating in the progression of non-small cell lung cancer (NSCLC); however, related mechanisms have not been fully disclosed. Here, we identified 5 subclusters of NSCLC based on consensus clustering of 3429 RCD-associated genes in the TCGA database and depicted the genomic features and immune landscape of these clusters. Importantly, the clusters provided insights into recognizing tumor microenvironment (TME) and tumor responses to immunotherapy and chemotherapy. Further, we established and validated an RCD-Risk model based on RCD-associated genes, which strongly predicted the prognosis, TME, and immunotherapy outcomes in NSCLC patients. Notably, tissue microarray staining confirmed that the expression of LDLRAD3, a core gene in RCD-Risk model, correlated with poor survival. In conclusion, we developed a novel RCD classification system and RCD-Risk model of NSCLC, serving as a robust and promising predictor for prognosis and immunotherapy benefit of individual NSCLC patients.
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Affiliation(s)
- Wei Su
- Department of Radiation Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Department of Gynecology Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai Pudong Hospital, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ting Hong
- Department of Radiation Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Department of Gynecology Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Baijie Feng
- Department of Oncology, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Zhou Yang
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Guang Lei
- Department of Radiation Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China
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5
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Yang Z, Quan Y, Chen Y, Huang Y, Huang R, Yu W, Wu D, Ye M, Min Z, Yu B. Knockdown of RNA N6-methyladenosine methyltransferase METTL3 represses Warburg effect in colorectal cancer via regulating HIF-1α. Signal Transduct Target Ther 2021; 6:89. [PMID: 33637677 PMCID: PMC7910535 DOI: 10.1038/s41392-021-00473-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 08/31/2020] [Accepted: 09/04/2020] [Indexed: 11/16/2022] Open
Affiliation(s)
- Zhou Yang
- Department of General Surgery, Shanghai Key Laboratory of Vascular Lesions Regulation and Remodeling, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Yingjun Quan
- Department of General Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yusheng Chen
- Department of General Surgery, Shanghai Key Laboratory of Vascular Lesions Regulation and Remodeling, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Yijun Huang
- Department of General Surgery, Shanghai Key Laboratory of Vascular Lesions Regulation and Remodeling, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Renhong Huang
- Department of General Surgery, Shanghai Key Laboratory of Vascular Lesions Regulation and Remodeling, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Weiping Yu
- Department of General Surgery, Shanghai Key Laboratory of Vascular Lesions Regulation and Remodeling, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Dejun Wu
- Department of General Surgery, Shanghai Key Laboratory of Vascular Lesions Regulation and Remodeling, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Min Ye
- Department of General Surgery, Shanghai Key Laboratory of Vascular Lesions Regulation and Remodeling, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China.
| | - Zhijun Min
- Department of General Surgery, Shanghai Key Laboratory of Vascular Lesions Regulation and Remodeling, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China.
| | - Bo Yu
- Department of General Surgery, Shanghai Key Laboratory of Vascular Lesions Regulation and Remodeling, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China. .,Department of General Surgery, Huashan Hospital Affiliated to Fudan University, Shanghai, China.
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6
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Rincón AM, Monje-Casas F. A guiding torch at the poles: the multiple roles of spindle microtubule-organizing centers during cell division. Cell Cycle 2020; 19:1405-1421. [PMID: 32401610 DOI: 10.1080/15384101.2020.1754586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
The spindle constitutes the cellular machinery that enables the segregation of the chromosomes during eukaryotic cell division. The microtubules that form this fascinating and complex genome distribution system emanate from specialized structures located at both its poles and known as microtubule-organizing centers (MTOCs). Beyond their structural function, the spindle MTOCs play fundamental roles in cell cycle control, the activation and functionality of the mitotic checkpoints and during cellular aging. This review highlights the pivotal importance of spindle-associated MTOCs in multiple cellular processes and their central role as key regulatory hubs where diverse intracellular signals are integrated and coordinated to ensure the successful completion of cell division and the maintenance of the replicative lifespan.
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Affiliation(s)
- Ana M Rincón
- Centro Andaluz de Biología Molecular Y Medicina Regenerativa (CABIMER) / CSIC - Universidad de Sevilla - Universidad Pablo de Olavide , Sevilla, Spain.,Dpto. de Genética / Universidad de Sevilla , Sevilla, Spain
| | - Fernando Monje-Casas
- Centro Andaluz de Biología Molecular Y Medicina Regenerativa (CABIMER) / CSIC - Universidad de Sevilla - Universidad Pablo de Olavide , Sevilla, Spain.,Consejo Superior de Investigaciones Científicas (CSIC) , Sevilla, Spain
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7
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Jiang Z, Yuan Y, Zheng H, Cui H, Sun X, Zhao W, Liu X. COMMD1 regulates cell proliferation and cell cycle progression by modulating p21 Cip1 levels. Biosci Biotechnol Biochem 2019; 83:845-850. [PMID: 30667321 DOI: 10.1080/09168451.2019.1569497] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Copper metabolism MURR1 domain-containing 1 (COMMD1) is a protein that participates in multiple cellular processes, including copper homeostasis and nuclear factor kappa B (NF-κB) and hypoxia-inducible factor 1α (HIF-1α) signaling. The COMMD1 upstream regulators X-linked inhibitor of apoptosis protein (XIAP) and p300 and downstream targets such as NF-κB and HIF-1α are involved in the regulation of cell proliferation and cell cycle progression. However, whether COMMD1 regulates cell proliferation and the cell cycle remains unclear. In the present study, we demonstrated that both overexpression and knockdown of COMMD1 affected the proliferation of HEK293 cells, and the cell cycle assay revealed that ectopic expression of COMMD1 arrested the cell cycle at the G1 phase. Furthermore, western blot analysis showed that COMMD1 affected p21 Cip1 levels. Taken together, these results suggest that COMMD1 regulates cell proliferation and cell cycle progression by modulating p21 Cip1 levels. Abbreviations COMMD1: Copper metabolism MURR1 domain containing 1; XIAP: X chromosome-linked inhibitor of apoptosis protein; FCS: Fetal calf serum; WCE: Whole cell extracts; RT-PCR: Reverse transcription-polymerase chain reaction; HEK293: Human embryonic kidney 293; ShRNA: Short hairpin RNA; NF-κB: Nuclear factor kappa-light-chain-enhancer of activated B cells; ARF: Alternate reading frame protein product of the CDKN2A locus.
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Affiliation(s)
- Zhiwen Jiang
- a Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research , Guangdong Medical University , Dongguan , China.,b Dongguan Scientific Research Center , Guangdong Medical University , Guangdong , China
| | - Yuan Yuan
- a Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research , Guangdong Medical University , Dongguan , China.,b Dongguan Scientific Research Center , Guangdong Medical University , Guangdong , China
| | - Huiling Zheng
- a Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research , Guangdong Medical University , Dongguan , China.,b Dongguan Scientific Research Center , Guangdong Medical University , Guangdong , China
| | - Hongjing Cui
- a Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research , Guangdong Medical University , Dongguan , China.,b Dongguan Scientific Research Center , Guangdong Medical University , Guangdong , China
| | - Xuerong Sun
- a Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research , Guangdong Medical University , Dongguan , China.,b Dongguan Scientific Research Center , Guangdong Medical University , Guangdong , China
| | - Wei Zhao
- a Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research , Guangdong Medical University , Dongguan , China.,b Dongguan Scientific Research Center , Guangdong Medical University , Guangdong , China
| | - Xinguang Liu
- a Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research , Guangdong Medical University , Dongguan , China.,b Dongguan Scientific Research Center , Guangdong Medical University , Guangdong , China.,c Institute of Biochemistry and Molecular Biology , Guangdong Medical University , Dongguan , China
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8
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Leukemia Stem Cells in Chronic Myeloid Leukemia. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1143:191-215. [PMID: 31338821 DOI: 10.1007/978-981-13-7342-8_9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Chronic myeloid leukemia (CML) is a clonal myeloproliferative disorder characterized by a chromosome translocation that generates the BCR-ABL oncogene encoding a constitutively activated tyrosine kinase. Although BCR-ABL tyrosine kinase inhibitors (TKIs) are highly effective in treating CML at chronic phase, a number of patients develop drug resistance due to the inability of TKIs to kill leukemia stem cells (LSCs). Similar to other types of hematopoietic malignancies, LSCs in CML are believed to be a rare cell population responsible for leukemia initiation, disease progression, and drug resistance. Therefore, a full understanding of the biology of LSCs will help to develop novel therapeutic strategies for effective treatment of CML to possibly reach a cure. In recent years, a significant progress has been made in studying the biology of LSCs in both animal models and human patients at cellular and molecular levels, providing a basis for designing and testing potential molecular targets for eradicating LSCs in CML.
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9
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Bardonova LA, Sheikh O, Malova IO, Sorokovikov VA, Byvaltsev VA. ENERGY SUPPLY AND DEMAND IN THE INTERVERTEBRAL DISC. COLUNA/COLUMNA 2018. [DOI: 10.1590/s1808-185120181703193837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT The intervertebral disc (IVD) is one of the parts of the body most commonly affected by disease, and it is only recently that we have come closer to understanding the reasons for its degeneration, in which nutrient supply plays a crucial role. In this literature review, we discuss the basic principles and characteristics of energy supply and demand to the IVD. Specifically, we review how different metabolites influence IVD cell activity, the effects of mechanical loading on IVD cell metabolism, and differences in energy metabolism of the annulus fibrous and nucleus pulposus cell phenotypes. Determining the factors that influence nutrient supply and demand in the IVD will enhance our understanding of the IVD pathology, and help to elucidate new therapeutic targets for IVD degeneration treatment.
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10
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Biddlestone J, Batie M, Bandarra D, Munoz I, Rocha S. SINHCAF/FAM60A and SIN3A specifically repress HIF-2α expression. Biochem J 2018; 475:2073-2090. [PMID: 29784889 PMCID: PMC6024822 DOI: 10.1042/bcj20170945] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 05/15/2018] [Accepted: 05/21/2018] [Indexed: 01/09/2023]
Abstract
The SIN3A-HDAC (histone deacetylase) complex is a master transcriptional repressor, required for development but often deregulated in disease. Here, we report that the recently identified new component of this complex, SINHCAF (SIN3A and HDAC-associated factor)/FAM60A (family of homology 60A), links the SIN3A-HDAC co-repressor complex function to the hypoxia response. We show that SINHCAF specifically represses HIF-2α mRNA and protein expression, via its interaction with the transcription factor SP1 (specificity protein 1) and recruitment of HDAC1 to the HIF-2α promoter. SINHCAF control over HIF-2α results in functional cellular changes in in vitro angiogenesis and viability. Our analysis reveals an unexpected link between SINHCAF and the regulation of the hypoxia response.
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Affiliation(s)
- John Biddlestone
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, U.K
- SCREDS Clinical Lecturer in Plastic and Reconstructive Surgery, Centre for Cell Engineering, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Michael Batie
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, U.K
- Department of Biochemistry, Institute for Integrative Biology, University of Liverpool, Liverpool L69 7ZB, U.K
| | - Daniel Bandarra
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, U.K
| | - Ivan Munoz
- MRC Protein Phosphorylation Unit, School of Life Sciences, University of Dundee, Dundee DD1 5EH, U.K
| | - Sonia Rocha
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, U.K.
- Department of Biochemistry, Institute for Integrative Biology, University of Liverpool, Liverpool L69 7ZB, U.K
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11
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Antony S, Jiang G, Wu Y, Meitzler JL, Makhlouf HR, Haines DC, Butcher D, Hoon DS, Ji J, Zhang Y, Juhasz A, Lu J, Liu H, Dahan I, Konate M, Roy KK, Doroshow JH. NADPH oxidase 5 (NOX5)-induced reactive oxygen signaling modulates normoxic HIF-1α and p27 Kip1 expression in malignant melanoma and other human tumors. Mol Carcinog 2017; 56:2643-2662. [PMID: 28762556 PMCID: PMC5675809 DOI: 10.1002/mc.22708] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 07/19/2017] [Accepted: 07/28/2017] [Indexed: 12/14/2022]
Abstract
NADPH oxidase 5 (NOX5) generated reactive oxygen species (ROS) have been implicated in signaling cascades that regulate cancer cell proliferation. To evaluate and validate NOX5 expression in human tumors, we screened a broad range of tissue microarrays (TMAs), and report substantial overexpression of NOX5 in malignant melanoma and cancers of the prostate, breast, and ovary. In human UACC-257 melanoma cells that possesses high levels of functional endogenous NOX5, overexpression of NOX5 resulted in enhanced cell growth, increased numbers of BrdU positive cells, and increased γ-H2AX levels. Additionally, NOX5-overexpressing (stable and inducible) UACC-257 cells demonstrated increased normoxic HIF-1α expression and decreased p27Kip1 expression. Similarly, increased normoxic HIF-1α expression and decreased p27Kip1 expression were observed in stable NOX5-overexpressing clones of KARPAS 299 human lymphoma cells and in the human prostate cancer cell line, PC-3. Conversely, knockdown of endogenous NOX5 in UACC-257 cells resulted in decreased cell growth, decreased HIF-1α expression, and increased p27Kip1 expression. Likewise, in an additional human melanoma cell line, WM852, and in PC-3 cells, transient knockdown of endogenous NOX5 resulted in increased p27Kip1 and decreased HIF-1α expression. Knockdown of endogenous NOX5 in UACC-257 cells resulted in decreased Akt and GSK3β phosphorylation, signaling pathways known to modulate p27Kip1 levels. In summary, our findings suggest that NOX5 expression in human UACC-257 melanoma cells could contribute to cell proliferation due, in part, to the generation of high local concentrations of extracellular ROS that modulate multiple pathways that regulate HIF-1α and networks that signal through Akt/GSK3β/p27Kip1 .
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Affiliation(s)
- Smitha Antony
- Division of Cancer Treatment and DiagnosisNational Cancer InstituteBethesdaMaryland
| | - Guojian Jiang
- Developmental Therapeutics Branch, Center for Cancer ResearchNational Cancer InstituteBethesdaMaryland
| | - Yongzhong Wu
- Developmental Therapeutics Branch, Center for Cancer ResearchNational Cancer InstituteBethesdaMaryland
| | - Jennifer L. Meitzler
- Developmental Therapeutics Branch, Center for Cancer ResearchNational Cancer InstituteBethesdaMaryland
| | - Hala R. Makhlouf
- Division of Cancer Treatment and DiagnosisNational Cancer InstituteBethesdaMaryland
| | - Diana C. Haines
- Pathology/Histotechnology Laboratory, Leidos Inc./Frederick National Laboratory for Cancer ResearchNational Cancer InstituteFrederickMaryland
| | - Donna Butcher
- Pathology/Histotechnology Laboratory, Leidos Inc./Frederick National Laboratory for Cancer ResearchNational Cancer InstituteFrederickMaryland
| | - Dave S. Hoon
- Department of Molecular OncologyJohn Wayne Cancer InstituteSanta MonicaCalifornia
| | - Jiuping Ji
- Division of Cancer Treatment and DiagnosisNational Cancer InstituteBethesdaMaryland
| | - Yiping Zhang
- Division of Cancer Treatment and DiagnosisNational Cancer InstituteBethesdaMaryland
| | - Agnes Juhasz
- Developmental Therapeutics Branch, Center for Cancer ResearchNational Cancer InstituteBethesdaMaryland
| | - Jiamo Lu
- Developmental Therapeutics Branch, Center for Cancer ResearchNational Cancer InstituteBethesdaMaryland
| | - Han Liu
- Division of Cancer Treatment and DiagnosisNational Cancer InstituteBethesdaMaryland
| | - Iris Dahan
- Division of Cancer Treatment and DiagnosisNational Cancer InstituteBethesdaMaryland
| | - Mariam Konate
- Division of Cancer Treatment and DiagnosisNational Cancer InstituteBethesdaMaryland
| | - Krishnendu K. Roy
- Division of Cancer Treatment and DiagnosisNational Cancer InstituteBethesdaMaryland
| | - James H. Doroshow
- Division of Cancer Treatment and DiagnosisNational Cancer InstituteBethesdaMaryland
- Developmental Therapeutics Branch, Center for Cancer ResearchNational Cancer InstituteBethesdaMaryland
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12
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Knockdown of HIF-1α by siRNA-expressing plasmid delivered by attenuated Salmonella enhances the antitumor effects of cisplatin on prostate cancer. Sci Rep 2017; 7:7546. [PMID: 28790395 PMCID: PMC5548753 DOI: 10.1038/s41598-017-07973-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 07/03/2017] [Indexed: 12/11/2022] Open
Abstract
Resistance to cisplatin (DDP) and dose-related toxicity remain two important obstacles in the treatment of prostate cancer (PCa) patients with DDP-based chemotherapy. We have investigated whether the knockdown of hypoxia-inducible factor-1 alpha (HIF-1α) by siRNA could enhance the antitumor activity of DDP, and aimed to determine the underlying mechanisms. Intravenous injection of attenuated Salmonella carrying a HIF-1α siRNA-expressing plasmid was used to knockdown HIF-1α in a PC-3 xenograft model. The in vitro and in vivo effects of HIF-1α siRNA treatment and/or DPP on PCa cell proliferation, apoptosis, glycolysis, and production of reactive oxygen species (ROS) were assessed by examining molecular markers specific to each process. The results demonstrated that the treatment of tumor-bearing mice with attenuated Salmonella carrying the HIF-1α siRNA plasmid greatly enhanced the antitumor effects of low-dose DDP. Further mechanistic studies demonstrated that knockdown of HIF-1α improved the response of PCa cells to DDP by redirecting aerobic glycolysis toward mitochondrial oxidative phosphorylation, leading to cell death through overproduction of ROS. Our findings indicate that DDP-based chemotherapy combined with targeting the HIF-1α-regulated cancer metabolism pathway might be an ideal strategy to treat PCa.
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13
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Fabian KPL, Chi-Sabins N, Taylor JL, Fecek R, Weinstein A, Storkus WJ. Therapeutic efficacy of combined vaccination against tumor pericyte-associated antigens DLK1 and DLK2 in mice. Oncoimmunology 2017; 6:e1290035. [PMID: 28405524 DOI: 10.1080/2162402x.2017.1290035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 01/25/2017] [Accepted: 01/26/2017] [Indexed: 12/28/2022] Open
Abstract
When compared with vascular cells in normal tissues, pericytes and vascular endothelial cells (VEC) in tumor blood vessels exhibit altered morphology and epigenetic programming that leads to the expression of unique antigens that allow for differential recognition by CD8+ T cells. We have previously shown that the Notch antagonist delta-like homolog 1 (DLK1) is a tumor pericyte-associated antigen expressed in setting of melanoma and a range of carcinomas. In this report, we show that therapeutic vaccination against DLK1 in murine models results in slowed tumor growth, but also to the compensatory expression of the DLK1 homolog, DLK2, by tumor-associated pericytes. Vaccines targeting both DLK1 and DLK2 resulted in superior antitumor benefits in association with improved activation and recruitment of antigen-specific Type 1 CD8+ T cells, reduced presence of myeloid-derived suppressive cells, T regulatory cell and tumor vascular normalization. The antitumor efficacy of vaccines coordinately targeting DLK1 and DLK2 was further improved by inclusion of PD-L1 blockade, thus defining a combination immunotherapy theoretically suitable for the treatment of a broad range of solid (vascularized) cancers.
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Affiliation(s)
- Kellsye Paula L Fabian
- Department of Immunology, University of Pittsburgh School of Medicine , Pittsburgh, PA, USA
| | - Nina Chi-Sabins
- Department of Immunology, University of Pittsburgh School of Medicine , Pittsburgh, PA, USA
| | - Jennifer L Taylor
- Department of Dermatology, University of Pittsburgh School of Medicine , Pittsburgh, PA, USA
| | - Ronald Fecek
- Department of Dermatology, University of Pittsburgh School of Medicine , Pittsburgh, PA, USA
| | - Aliyah Weinstein
- Department of Immunology, University of Pittsburgh School of Medicine , Pittsburgh, PA, USA
| | - Walter J Storkus
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Department of Dermatology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; The University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA
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14
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Diverse Mechanisms of Sp1-Dependent Transcriptional Regulation Potentially Involved in the Adaptive Response of Cancer Cells to Oxygen-Deficient Conditions. Cancers (Basel) 2015; 8:cancers8010002. [PMID: 26703734 PMCID: PMC4728449 DOI: 10.3390/cancers8010002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/24/2015] [Accepted: 12/14/2015] [Indexed: 01/01/2023] Open
Abstract
The inside of a tumor often contains a hypoxic area caused by a limited supply of molecular oxygen due to aberrant vasculature. Hypoxia-inducible factors (HIFs) are major transcription factors that are required for cancer cells to adapt to such stress conditions. HIFs, complexed with the aryl hydrocarbon receptor nuclear translocator, bind to and activate target genes as enhancers of transcription. In addition to this common mechanism, the induction of the unfolded protein response and mTOR signaling in response to endoplasmic reticulum stress is also known to be involved in the adaptation to hypoxia conditions. Sp1 is a ubiquitously-expressed transcription factor that plays a vital role in the regulation of numerous genes required for normal cell function. In addition to the well-characterized stress response mechanisms described above, increasing experimental evidence suggests that Sp1 and HIFs collaborate to drive gene expression in cancer cells in response to hypoxia, thereby regulating additional adaptive responses to cellular oxygen deficiency. However, these characteristics of Sp1 and their biological merits have not been summarized. In this review, we will discuss the diverse mechanisms of transcriptional regulation by Sp1 and their potential involvement in the adaptive response of cancer cells to hypoxic tumor microenvironments.
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15
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Yang YJ, Na HJ, Suh MJ, Ban MJ, Byeon HK, Kim WS, Kim JW, Choi EC, Kwon HJ, Chang JW, Koh YW. Hypoxia Induces Epithelial-Mesenchymal Transition in Follicular Thyroid Cancer: Involvement of Regulation of Twist by Hypoxia Inducible Factor-1α. Yonsei Med J 2015; 56:1503-14. [PMID: 26446630 PMCID: PMC4630036 DOI: 10.3349/ymj.2015.56.6.1503] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 02/09/2015] [Accepted: 02/11/2015] [Indexed: 12/15/2022] Open
Abstract
PURPOSE Although follicular thyroid cancer (FTC) has a relatively fair prognosis, distant metastasis sometimes results in poor prognosis and survival. There is little understanding of the mechanisms contributing to the aggressiveness potential of thyroid cancer. We showed that hypoxia inducible factor-1α (HIF-1α) induced aggressiveness in FTC cells and identified the underlying mechanism of the HIF-1α-induced invasive characteristics. MATERIALS AND METHODS Cells were cultured under controlled hypoxic environments (1% O₂) or normoxic conditions. The effect of hypoxia on HIF-1α, and epithelial-to-mesenchymal transition (EMT) related markers were evaluated by quantitative real-time PCR, Western blot analysis and immunocytochemistry. Invasion and wound healing assay were conducted to identify functional character of EMT. The involvement of HIF-1α and Twist in EMT were studied using gene overexpression or silencing. After orthotopic nude mouse model was established using the cells transfected with lentiviral shHIF-1α, tissue analysis was done. RESULTS Hypoxia induces HIF-1α expression and EMT, including typical morphologic changes, cadherin shift, and increased vimentin expression. We showed that overexpression of HIF-1α via transfection resulted in the aforementioned changes without hypoxia, and repression of HIF-1α with RNA interference suppressed hypoxia-induced HIF-1α and EMT. Furthermore, we also observed that Twist expression was regulated by HIF-1α. These were confirmed in the orthotopic FTC model. CONCLUSION Hypoxia induced HIF-1α, which in turn induced EMT, resulting in the increased capacity for invasion and migration of cells via regulation of the Twist signal pathway in FTC cells. These findings provide insight into a possible therapeutic strategy to prevent invasive and metastatic FTC.
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Affiliation(s)
- Yeon Ju Yang
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Hwi Jung Na
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Michelle J Suh
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Myung Jin Ban
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Hyung Kwon Byeon
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Won Shik Kim
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Wook Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Eun Chang Choi
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Hyeong Ju Kwon
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Won Chang
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.
| | - Yoon Woo Koh
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.
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16
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Abstract
Oxygen is the basic molecule which supports life and it truly is "god's gift to life." Despite its immense importance, research on "oxygen biology" has never received the light of the day and has been limited to physiological and biochemical studies. It seems that in modern day biology, oxygen research is summarized in one word "hypoxia." Scientists have focused on hypoxia-induced transcriptomics and molecular-cellular alterations exclusively in disease models. Interestingly, the potential of oxygen to control the basic principles of biology like homeostatic maintenance, transcription, replication, and protein folding among many others, at the molecular level, has been completely ignored. Here, we present a perspective on the crucial role played by oxygen in regulation of basic biological phenomena. Our conclusion highlights the importance of establishing novel research areas like oxygen biology, as there is great potential in this field for basic science discoveries and clinical benefits to the society.
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17
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Borsi E, Perrone G, Terragna C, Martello M, Dico AF, Solaini G, Baracca A, Sgarbi G, Pasquinelli G, Valente S, Zamagni E, Tacchetti P, Martinelli G, Cavo M. Hypoxia inducible factor-1 alpha as a therapeutic target in multiple myeloma. Oncotarget 2015; 5:1779-92. [PMID: 24732040 PMCID: PMC4039126 DOI: 10.18632/oncotarget.1736] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The increasing importance of hypoxia-inducible factor-1α (HIF-1α) in tumorigenesis raises the possibility that agents which specifically inhibit this transcription factor, would provide significant therapeutic benefit. The constitutive expression of HIF-1α in about 35% of Multiple Myeloma (MM) patients suggests HIF-1α suppression might be part of a therapeutic strategy. Accordingly, we explored the effect of EZN-2968, a small 3rd generation antisense oligonucleotide against HIF-1α, in a panel of MM cell lines and primary patients samples. Here, we demonstrated that EZN-2968 is highly specific for HIF-1α mRNA and that exposure of MM cells to EZN-2968 resulted in an efficient and homogeneous loading of the cells showing a long lasting low HIF-1α protein level. In MM cells, HIF-1α suppression induced a permanent cell cycle arrest by prolonging S-phase through cyclin A modulation and in addition it induced a mild apoptotic cell death. Moreover, HIF-1α suppression caused a metabolic shift that leaded to increased production of ATP by oxidative phosphorylation (i.e. Warburg effect reversion), that was confirmed by the observed mitochondrial membrane potential decrease. These results show that HIF-1α is an important player in MM homeostasis and that its inhibition by small antisense oligonucleotides provides a rationale for novel therapeutic strategy to improving MM treatment.
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Affiliation(s)
- Enrica Borsi
- Department of Experimental Diagnostic and Specialty Medicine (DIMES), "L. and A. Seràgnoli", Bologna University School of Medicine, S. Orsola's University Hospital, Italy
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18
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Schilling D, Tetzlaff F, Konrad S, Li W, Multhoff G. A hypoxia-induced decrease of either MICA/B or Hsp70 on the membrane of tumor cells mediates immune escape from NK cells. Cell Stress Chaperones 2015; 20:139-47. [PMID: 25103413 PMCID: PMC4255247 DOI: 10.1007/s12192-014-0532-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 07/14/2014] [Accepted: 07/28/2014] [Indexed: 12/16/2022] Open
Abstract
Recent findings suggest that hypoxia of the tumor microenvironment contributes to immune escape from natural killer (NK) cell-mediated cytotoxicity. Heat shock protein 70 (Hsp70) and the stress-regulated major histocompatibility class I chain-related protein A and B (MICA/B) both serve as ligands for activated NK cells when expressed on the cell surface of tumor cells. Herein, we studied the effects of hypoxia and hypoxia-inducible factor-1α (HIF-1α) on the membrane expression of these NK cell ligands in H1339 with high and MDA-MB-231 tumor cells with low basal HIF-1α levels and its consequences on NK cell-mediated cytotoxicity. We could show that a hypoxia-induced decrease in the membrane expression of MICA/B and Hsp70 on H1339 and MDA-MB-231 cells, respectively, is associated with a reduced sensitivity to NK cell-mediated lysis. A knockdown of HIF-1α revealed that the decreased surface expression of MICA/B under hypoxia is dependent on HIF-1α in H1339 cells with high basal HIF-1α levels. Hypoxia and HIF-1α did not affect the MICA/B expression in MDA-MB-231 cells but reduced the Hsp70 membrane expression which in turn also impaired NK cell recognition. Furthermore, we could show that the hypoxia-induced decrease in membrane Hsp70 is independent of HIF-1α in MDA-MB-231. Our data indicate that hypoxia-induced downregulation of both NK cell ligands MICA/B and Hsp70 impairs NK cell-mediated cytotoxicity, whereby only MICA/B appears to be regulated by HIF-1α.
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Affiliation(s)
- Daniela Schilling
- />Department of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
- />Institute of Biological and Medical Imaging, IBMI; CCG - Innate Immunity in Tumor Biology, Helmholtz Center Munich – German Research Center for Environmental Health, Munich, Germany
| | - Fabian Tetzlaff
- />Department of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Sarah Konrad
- />Department of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Wei Li
- />Department of Dermatology, University of Southern California Keck School of Medicine, Los Angeles, CA USA
| | - Gabriele Multhoff
- />Department of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
- />Institute of Biological and Medical Imaging, IBMI; CCG - Innate Immunity in Tumor Biology, Helmholtz Center Munich – German Research Center for Environmental Health, Munich, Germany
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19
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Bandarra D, Biddlestone J, Mudie S, Müller HAJ, Rocha S. HIF-1α restricts NF-κB-dependent gene expression to control innate immunity signals. Dis Model Mech 2014; 8:169-81. [PMID: 25510503 PMCID: PMC4314782 DOI: 10.1242/dmm.017285] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Hypoxia and inflammation are intimately linked. It is known that nuclear factor κB (NF-κB) regulates the hypoxia-inducible factor (HIF) system, but little is known about how HIF regulates NF-κB. Here, we show that HIF-1α represses NF-κB-dependent gene expression. HIF-1α depletion results in increased NF-κB transcriptional activity both in mammalian cells and in the model organism Drosophila melanogaster. HIF-1α depletion enhances the NF-κB response, and this required not only the TAK-IKK complex, but also CDK6. Loss of HIF-1α results in an increased angiogenic response in mammalian cancer cells and increased mortality in Drosophila following infection. These results indicate that HIF-1α is required to restrain the NF-κB response, and thus prevents excessive and damaging pro-inflammatory responses.
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Affiliation(s)
- Daniel Bandarra
- Centre for Gene Regulation and Expression, College of Life Sciences, University of Dundee, Dow Street, DD1 5EH, UK
| | - John Biddlestone
- Centre for Gene Regulation and Expression, College of Life Sciences, University of Dundee, Dow Street, DD1 5EH, UK
| | - Sharon Mudie
- Centre for Gene Regulation and Expression, College of Life Sciences, University of Dundee, Dow Street, DD1 5EH, UK
| | - H-Arno J Müller
- Division of Cell and Developmental Biology, College of Life Sciences, University of Dundee, Dow Street, DD1 5EH, UK
| | - Sonia Rocha
- Centre for Gene Regulation and Expression, College of Life Sciences, University of Dundee, Dow Street, DD1 5EH, UK.
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20
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Bremm A, Moniz S, Mader J, Rocha S, Komander D. Cezanne (OTUD7B) regulates HIF-1α homeostasis in a proteasome-independent manner. EMBO Rep 2014; 15:1268-77. [PMID: 25355043 PMCID: PMC4264929 DOI: 10.15252/embr.201438850] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Revised: 09/24/2014] [Accepted: 09/29/2014] [Indexed: 12/18/2022] Open
Abstract
The transcription factor HIF-1α is essential for cells to rapidly adapt to low oxygen levels (hypoxia). HIF-1α is frequently deregulated in cancer and correlates with poor patient prognosis. Here, we demonstrate that the deubiquitinase Cezanne regulates HIF-1α homeostasis. Loss of Cezanne decreases HIF-1α target gene expression due to a reduction in HIF-1α protein levels. Surprisingly, although the Cezanne-regulated degradation of HIF-1α depends on the tumour suppressor pVHL, hydroxylase and proteasome activity are dispensable. Our data suggest that Cezanne is essential for HIF-1α protein stability and that loss of Cezanne stimulates HIF-1α degradation via proteasome-independent routes, possibly through chaperone-mediated autophagy.
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Affiliation(s)
- Anja Bremm
- Buchmann Institute for Molecular Life Sciences, Institute of Biochemistry II, Goethe University, Frankfurt (Main), Germany Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | - Sonia Moniz
- College of Life Sciences, Centre for Gene Regulation and Expression, University of Dundee, Dundee, UK
| | - Julia Mader
- Buchmann Institute for Molecular Life Sciences, Institute of Biochemistry II, Goethe University, Frankfurt (Main), Germany
| | - Sonia Rocha
- College of Life Sciences, Centre for Gene Regulation and Expression, University of Dundee, Dundee, UK
| | - David Komander
- Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
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21
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Trendeleva TA, Aliverdieva DA, Zvyagilskaya RA. Mechanisms of sensing and adaptive responses to low oxygen conditions in mammals and yeasts. BIOCHEMISTRY (MOSCOW) 2014; 79:750-60. [DOI: 10.1134/s0006297914080033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Cell cycle progression in response to oxygen levels. Cell Mol Life Sci 2014; 71:3569-82. [PMID: 24858415 PMCID: PMC4143607 DOI: 10.1007/s00018-014-1645-9] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Revised: 05/01/2014] [Accepted: 05/05/2014] [Indexed: 02/06/2023]
Abstract
Hypoxia' or decreases in oxygen availability' results in the activation of a number of different responses at both the whole organism and the cellular level. These responses include drastic changes in gene expression, which allow the organism (or cell) to cope efficiently with the stresses associated with the hypoxic insult. A major breakthrough in the understanding of the cellular response to hypoxia was the discovery of a hypoxia sensitive family of transcription factors known as the hypoxia inducible factors (HIFs). The hypoxia response mounted by the HIFs promotes cell survival and energy conservation. As such, this response has to deal with important cellular process such as cell division. In this review, the integration of oxygen sensing with the cell cycle will be discussed. HIFs, as well as other components of the hypoxia pathway, can influence cell cycle progression. The role of HIF and the cell molecular oxygen sensors in the control of the cell cycle will be reviewed.
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23
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Silencing of HIF-1α enhances the radiation sensitivity of human glioma growth in vitro and in vivo. Neuropharmacology 2014; 89:168-74. [PMID: 24859610 DOI: 10.1016/j.neuropharm.2014.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 05/07/2014] [Accepted: 05/07/2014] [Indexed: 11/20/2022]
Abstract
Gliomas are the leading cause of cancer-related mortality worldwide, and the incidence is increasing. Because gliomas often become resistant to radiation treatment, it is urgent to develop novel therapeutic methods that are more effective and less toxic than current therapies so as to enhance patient survival and quality of life. Effective enhancement of radiation therapy for gliomas in vivo and in vitro was observed upon silencing of hypoxia-inducible factor 1α (HIF-1α) with RNA interference; this enhancement was related to changes in the cell cycle and apoptosis that were accompanied by modulation of Cdc2, cyclin B1, and Bcl-2 expression. Our data suggest that HIF-1α silencing combined with radiation therapy will increase the therapeutic efficacy of glioma treatment via regulation of cell cycle and apoptosis-related signaling pathways.
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24
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Sourbier C, Srivastava G, Ghosh MC, Ghosh S, Yang Y, Gupta G, Degraff W, Krishna MC, Mitchell JB, Rouault TA, Linehan WM. Targeting HIF2α translation with Tempol in VHL-deficient clear cell renal cell carcinoma. Oncotarget 2013. [PMID: 23178531 PMCID: PMC3717806 DOI: 10.18632/oncotarget.561] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The tumor suppressor gene, Von Hippel-Lindau (VHL), is frequently mutated in the most common form of kidney cancer, clear cell renal cell carcinoma (CCRCC). In hypoxic conditions, or when there is a VHL mutation, the hypoxia inducible factors, HIF1α and HIF2α, are stabilized and transcribe a panel of genes associated with cancer such as vascular endothelial growth factor receptor (VEGFR), platelet derived growth factor (PDGF), and glucose transporter 1 (GLUT1). Recent studies in clear cell kidney cancer have suggested that HIF2α, but not HIF1α, is the critical oncoprotein in the VHL pathway. Therefore, targeting HIF2α could provide a potential therapeutic approach for patients with advanced CCRCC. Since iron regulatory protein 1 (IRP1) is known to inhibit the translation of HIF2α, we investigated whether Tempol, a stable nitroxide that activates IRP1 towards IRE-binding, might have a therapeutic effect on a panel of human CCRCC cells expressing both HIF1α and HIF2α. We first evaluated the protein expression of HIF1α and HIF2α in 15 different clear cell renal carcinoma cell lines established from patient tumors in our laboratory. Tempol decreased the expression of HIF2α, and its downstream targets in all the cell lines of the panel. This effect was attributed to a dramatic increase of IRE-binding activity of IRP1. Several cell lines were found to have an increased IRP1 basal activity at 20% O2 compared to 5% O2, which may lower HIF2α expression in some of the cell lines in a VHL-independent manner. Taken together our data identify Tempol as an agent with potential therapeutic activity targeting expression of HIF2α in VHL-deficient clear cell kidney cancer and illustrate the importance of studying biochemical processes at relevant physiological O2 levels.
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Affiliation(s)
- Carole Sourbier
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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25
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Moser SC, Bensaddek D, Ortmann B, Maure JF, Mudie S, Blow JJ, Lamond AI, Swedlow JR, Rocha S. PHD1 links cell-cycle progression to oxygen sensing through hydroxylation of the centrosomal protein Cep192. Dev Cell 2013; 26:381-92. [PMID: 23932902 PMCID: PMC3757158 DOI: 10.1016/j.devcel.2013.06.014] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 05/13/2013] [Accepted: 06/13/2013] [Indexed: 01/08/2023]
Abstract
PHD1 belongs to the family of prolyl-4-hydroxylases (PHDs) that is responsible for posttranslational modification of prolines on specific target proteins. Because PHD activity is sensitive to oxygen levels and certain byproducts of the tricarboxylic acid cycle, PHDs act as sensors of the cell’s metabolic state. Here, we identify PHD1 as a critical molecular link between oxygen sensing and cell-cycle control. We show that PHD1 function is required for centrosome duplication and maturation through modification of the critical centrosome component Cep192. Importantly, PHD1 is also required for primary cilia formation. Cep192 is hydroxylated by PHD1 on proline residue 1717. This hydroxylation is required for binding of the E3 ubiquitin ligase SCFSkp2, which ubiquitinates Cep192, targeting it for proteasomal degradation. By modulating Cep192 levels, PHD1 thereby affects the processes of centriole duplication and centrosome maturation and contributes to the regulation of cell-cycle progression. The prolyl-4-hydroxylase PHD1 is required for mitotic progression PHD1 hydroxylates centrosomal protein Cep192 in vitro and in vivo Hydroxylation of Cep192 at Pro1717 modulates Cep192 stability and function Hydroxylation of Cep192 is required for E3 ligase SCFSkp2 binding to Cep192
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Affiliation(s)
- Sandra C Moser
- Centre for Gene Regulation and Expression, College of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
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26
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Chae JI, Jeon YJ, Shim JH. Downregulation of Sp1 is involved in honokiol-induced cell cycle arrest and apoptosis in human malignant pleural mesothelioma cells. Oncol Rep 2013; 29:2318-24. [PMID: 23525508 DOI: 10.3892/or.2013.2353] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Accepted: 12/14/2012] [Indexed: 01/17/2023] Open
Abstract
Malignant pleural mesothelioma (MPM) is an extremely aggressive type of cancer and is associated with a poor patient prognosis due to its rapid progression. Novel therapeutic agents such as honokiol (HNK) improve the clinical outcomes of cancer therapy, yet the mechanisms involved have not been fully elucidated. The present study examined the regulatory effects of HNK on the growth and apoptosis of MSTO-211H mesothelioma cells and investigated its anticancer mechanism. The results revealed that HNK significantly reduced the cell viability and increased the sub-G1 population in MSTO-211H cells and suppressed the expression of the specificity protein 1 protein (Sp1). HNK reduced the transcriptional activity of Sp1 regulatory proteins, including cyclin D1, Mcl-1 and survivin, and, thus, induced apoptosis signaling pathways by increasing Bax, reducing Bid and Bcl-xl and activating caspase-3 and PARP in mesothelioma cells. The results suggest that Sp1, a novel molecular target of HNK, may be related to cell cycle arrest and apoptosis induction through the modulation of signal transduction pathways in MPM.
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Affiliation(s)
- Jung-Il Chae
- Department of Dental Pharmacology, School of Dentistry, Brain Korea 21 Project, Chonbuk National University, Jeonju 561‑756, Republic of Korea
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27
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Chae JI, Cho JH, Lee KA, Choi NJ, Seo KS, Kim SB, Lee SH, Shim JH. Role of transcription factor Sp1 in the quercetin-mediated inhibitory effect on human malignant pleural mesothelioma. Int J Mol Med 2012; 30:835-41. [PMID: 22842769 DOI: 10.3892/ijmm.2012.1075] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Accepted: 05/25/2012] [Indexed: 11/05/2022] Open
Abstract
Quercetin (Qu) is found in plants, including red onions and in the skins of red apples, and induces the apoptosis of certain malignant cells. However, no report has been issued on the apoptotic effect of Qu on human malignant pleural mesothelioma. In the present study, it was found that MSTO-211H mesothelioma cell viability was reduced and apoptotic cell death was increased by Qu (20-80 µM), which was found to have an IC₅₀ of 58 µM. In addition, Qu increased the sub-G₁ cell population, and was found to interact with specificity protein 1 (Sp1) and significantly suppressed its expression at the protein and mRNA levels. Furthermore, Qu modulated the levels of Sp1 regulatory genes, such as cyclin D1, myeloid cell leukemia (Mcl)-1 and survivin in MSTO-211H cells. Apoptotic signaling cascades were activated by the cleavage of Bid, caspase-3 and PARP, and by the downregulation of Bcl-xL and the upregulation of Bax in MSTO-211H cells. Our results strongly suggest that Sp1 be considered as a novel molecular target of Qu in human malignant pleural mesothelioma.
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Affiliation(s)
- Jung-Il Chae
- Department of Dental Pharmacology, School of Dentistry, Brain Korea 21 Project, Chonbuk National University, Jeonju 561-756, Republic of Korea
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28
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Abstract
Hypoxia-inducible factor-1α (HIF1α), a master transcriptional regulator of the cellular and systemic hypoxia response, is essential for the maintenance of self-renewal capacity of normal HSCs. It is still unknown whether HIF1α has a role in survival regulation of leukemia stem cells (LSCs) in chronic myeloid leukemia (CML). Using a mouse model of CML, here we report that HIF1α plays a crucial role in survival maintenance of LSCs. Deletion of HIF1α impairs the propagation of CML through impairing cell-cycle progression and inducing apoptosis of LSCs. Deletion of HIF1α results in elevated expression of p16(Ink4a) and p19(Arf) in LSCs, and knockdown of p16(Ink4a) and p19(Arf) rescues the defective colony-forming ability of HIF1α(-/-) LSCs. Compared with normal HSCs, LSCs appear to be more dependent on the HIF1α pathway. Together, these results demonstrate that HIF1α represents a critical pathway in LSCs and inhibition of the HIF1α pathway provides a therapeutic strategy for eradicating LSCs in CML.
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