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Vidalle MC, Sheth B, Fazio A, Marvi MV, Leto S, Koufi FD, Neri I, Casalin I, Ramazzotti G, Follo MY, Ratti S, Manzoli L, Gehlot S, Divecha N, Fiume R. Nuclear Phosphoinositides as Key Determinants of Nuclear Functions. Biomolecules 2023; 13:1049. [PMID: 37509085 PMCID: PMC10377365 DOI: 10.3390/biom13071049] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023] Open
Abstract
Polyphosphoinositides (PPIns) are signalling messengers representing less than five per cent of the total phospholipid concentration within the cell. Despite their low concentration, these lipids are critical regulators of various cellular processes, including cell cycle, differentiation, gene transcription, apoptosis and motility. PPIns are generated by the phosphorylation of the inositol head group of phosphatidylinositol (PtdIns). Different pools of PPIns are found at distinct subcellular compartments, which are regulated by an array of kinases, phosphatases and phospholipases. Six of the seven PPIns species have been found in the nucleus, including the nuclear envelope, the nucleoplasm and the nucleolus. The identification and characterisation of PPIns interactor and effector proteins in the nucleus have led to increasing interest in the role of PPIns in nuclear signalling. However, the regulation and functions of PPIns in the nucleus are complex and are still being elucidated. This review summarises our current understanding of the localisation, biogenesis and physiological functions of the different PPIns species in the nucleus.
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Affiliation(s)
- Magdalena C Vidalle
- Inositide Laboratory, School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Life Sciences Building 85, Highfield, Southampton SO17 1BJ, UK
| | - Bhavwanti Sheth
- Inositide Laboratory, School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Life Sciences Building 85, Highfield, Southampton SO17 1BJ, UK
| | - Antonietta Fazio
- Department of Biomedical Sciences (DIBINEM), University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Maria Vittoria Marvi
- Department of Biomedical Sciences (DIBINEM), University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Stefano Leto
- Department of Biomedical Sciences (DIBINEM), University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Foteini-Dionysia Koufi
- Department of Biomedical Sciences (DIBINEM), University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Irene Neri
- Department of Biomedical Sciences (DIBINEM), University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Irene Casalin
- Department of Biomedical Sciences (DIBINEM), University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Giulia Ramazzotti
- Department of Biomedical Sciences (DIBINEM), University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Matilde Y Follo
- Department of Biomedical Sciences (DIBINEM), University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Stefano Ratti
- Department of Biomedical Sciences (DIBINEM), University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Lucia Manzoli
- Department of Biomedical Sciences (DIBINEM), University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Sonakshi Gehlot
- Inositide Laboratory, School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Life Sciences Building 85, Highfield, Southampton SO17 1BJ, UK
| | - Nullin Divecha
- Inositide Laboratory, School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Life Sciences Building 85, Highfield, Southampton SO17 1BJ, UK
| | - Roberta Fiume
- Department of Biomedical Sciences (DIBINEM), University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
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Ferreras-Gutiérrez M, Chaves-Arquero B, González-Magaña A, Merino N, Amusategui-Mateu I, Huecas S, Medrano FJ, Blanco FJ. Structural analysis of ING3 protein and histone H3 binding. Int J Biol Macromol 2023; 242:124724. [PMID: 37148949 DOI: 10.1016/j.ijbiomac.2023.124724] [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: 03/06/2023] [Revised: 04/21/2023] [Accepted: 04/30/2023] [Indexed: 05/08/2023]
Abstract
Proteins belonging to the ING family regulate the transcriptional state of chromatin by recruiting remodeling complexes to sites with histone H3 trimethylated at Lysine 4 (H3K4me3). This modification is recognized by the Plant HomeoDomain (PHD) present at the C-terminal region of the five ING proteins. ING3 facilitates acetylation of histones H2A and H4 by the NuA4-Tip60 MYST histone acetyl transferase complex, and it has been proposed to be an oncoprotein. The crystal structure of the N-terminal domain of ING3 shows that it forms homodimers with an antiparallel coiled-coil fold. The crystal structure of the PHD is similar to those of its four homologs. These structures explain the possible deleterious effects of ING3 mutations detected in tumors. The PHD binds histone H3K4me3 with low-micromolar, and binds the non-methylated histone with a 54-fold reduced affinity. Our structure explains the impact of site directed mutagenesis experiments on histone recognition. These structural features could not be confirmed for the full-length protein as solubility was insufficient for structural studies, but the structure of its folded domains suggest a conserved structural organization for the ING proteins as homodimers and bivalent readers of the histone H3K4me3 mark.
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Affiliation(s)
| | - Belén Chaves-Arquero
- Centro de Investigaciones Biológicas Margarita Salas (CIB), CSIC, Madrid 28040, Spain
| | - Amaia González-Magaña
- Instituto Biofisika and Departamento de Bioquímica y Biología Molecular (CSIC, UPV/EHU), University of the Basque Country, 48940 Leioa, Spain
| | - Nekane Merino
- CIC bioGUNE, Parque Tecnológico de Bizkaia, 48160 Derio, Spain
| | | | - Sonia Huecas
- Centro de Investigaciones Biológicas Margarita Salas (CIB), CSIC, Madrid 28040, Spain
| | - Francisco J Medrano
- Centro de Investigaciones Biológicas Margarita Salas (CIB), CSIC, Madrid 28040, Spain
| | - Francisco J Blanco
- Centro de Investigaciones Biológicas Margarita Salas (CIB), CSIC, Madrid 28040, Spain.
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Azemin WA, Alias N, Ali AM, Shamsir MS. In silico analysis prediction of HepTH1-5 as a potential therapeutic agent by targeting tumour suppressor protein networks. J Biomol Struct Dyn 2023; 41:1141-1167. [PMID: 34935583 DOI: 10.1080/07391102.2021.2017349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Many studies reported that the activation of tumour suppressor protein, p53 induced the human hepcidin expression. However, its expression decreased when p53 was silenced in human hepatoma cells. Contrary to Tilapia hepcidin TH1-5, HepTH1-5 was previously reported to trigger the p53 activation through the molecular docking approach. The INhibitor of Growth (ING) family members are also shown to directly interact with p53 and promote cell cycle arrest, senescence, apoptosis and participate in DNA replication and DNA damage responses to suppress the tumour initiation and progression. However, the interrelation between INGs and HepTH1-5 remains unknown. Therefore, this study aims to identify the mechanism and their protein interactions using in silico approaches. The finding revealed that HepTH1-5 and its ligands had interacted mostly on hotspot residues of ING proteins which involved in histone modifications via acetylation, phosphorylation, and methylation. This proves that HepTH1-5 might implicate in an apoptosis signalling pathway and preserve the protein structure and function of INGs by reducing the perturbation of histone binding upon oxidative stress response. This study would provide theoretical guidance for the design and experimental studies to decipher the role of HepTH1-5 as a potential therapeutic agent for cancer therapy. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Wan-Atirah Azemin
- Faculty of Bioresources and Food Industry, School of Agriculture Science and Biotechnology, Universiti Sultan Zainal Abidin, Besut, Malaysia.,Faculty of Science, Bioinformatics Research Group (BIRG), Department of Biosciences, Universiti Teknologi Malaysia, Skudai, Malaysia
| | - Nadiawati Alias
- Faculty of Bioresources and Food Industry, School of Agriculture Science and Biotechnology, Universiti Sultan Zainal Abidin, Besut, Malaysia
| | - Abdul Manaf Ali
- Faculty of Bioresources and Food Industry, School of Agriculture Science and Biotechnology, Universiti Sultan Zainal Abidin, Besut, Malaysia
| | - Mohd Shahir Shamsir
- Faculty of Science, Bioinformatics Research Group (BIRG), Department of Biosciences, Universiti Teknologi Malaysia, Skudai, Malaysia.,Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Higher Education Hub, Muar, Malaysia
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Multi-Omics Analysis Reveals the Potential Effects of Maternal Dietary Restriction on Fetal Muscle Growth and Development. Nutrients 2023; 15:nu15041051. [PMID: 36839409 PMCID: PMC9964303 DOI: 10.3390/nu15041051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/15/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
In terms of fetal muscle growth, development, and health, maternal nutrition is a crucial influence, although the exact biochemical mechanism by which this occurs is still not fully understood. To examine the potential impacts of maternal dietary restriction on fetal muscle development, the sheep maternal dietary restriction model was developed for this study. In our study, 12 pregnant ewes were evenly split into two experimental groups and fed either 75% or 100% of a maternal nutrient. In addition, a multi-omics analysis was used to study the embryonic longissimus dorsis on gestational days (GD) 85 and 135. The fetal weight at GD 135 was significantly below normal due to the maternal restricted diet (p < 0.01). When fetuses were exposed to the dietary deficit, 416 mRNAs and 40 proteins were significantly changed. At GD 85, the multi-omics analysis revealed that maternal dietary restriction led to a significant up-regulation of the cell cycle regulator CDK2 gene in the cellular senescence signaling pathway, and the results of the qRT-PCR were similar to the multi-omics analysis, which showed that SIX1, PAX7, the cell cycle factors CDK4 and CDK6, and the BCL-2 apoptosis factor were up-regulated and several skeletal muscle marker genes, such as MYF5 and MyoD were down-regulated. At GD 135, maternal dietary restriction blocks the muscle fiber differentiation and maturation. The multi-omics analysis revealed that the TEAD1 gene was in the Hippo signaling pathway, the muscle marker genes MYF5 and MyoG were significantly down-regulated, and the TEAD1 binding of the down-regulated VGLL3 gene might be potential mechanisms affecting myofiber differentiation and maturation. Knocking down the CDK2 gene could inhibit the proliferation of primary embryonic myoblasts, and the expression levels of cell cycle regulatory factors CDK4 and CDK6 were significantly changed. Under low nutrient culture conditions, the number of myoblasts decreased and the expression of CDK2, CDK6, MYF5, PAX7 and BCL-2 changed, which was in perfect agreement with the multi-omics analysis. All of the findings from our study helped to clarify the potential effects of maternal dietary restriction on fetal muscle growth and development. They also provided a molecular foundation for understanding the molecular regulatory mechanisms of maternal nutrition on fetal muscle growth and development, as well as for the development of new medications and the management of related metabolic diseases.
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Insights into Regulators of p53 Acetylation. Cells 2022; 11:cells11233825. [PMID: 36497084 PMCID: PMC9737083 DOI: 10.3390/cells11233825] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/25/2022] [Accepted: 11/25/2022] [Indexed: 12/02/2022] Open
Abstract
The tumor suppressor p53 is a transcription factor that regulates the expression of dozens of target genes and diverse physiological processes. To precisely regulate the p53 network, p53 undergoes various post-translational modifications and alters the selectivity of target genes. Acetylation plays an essential role in cell fate determination through the activation of p53. Although the acetylation of p53 has been examined, the underlying regulatory mechanisms remain unclear and, thus, have attracted the interest of researchers. We herein discuss the role of acetylation in the p53 pathway, with a focus on p53 acetyltransferases and deacetylases. We also review recent findings on the regulators of these enzymes to understand the mode of p53 acetylation from a broader perspective.
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Taheri M, Hussen BM, Najafi S, Abak A, Ghafouri-Fard S, Samsami M, Baniahmad A. Molecular mechanisms of inhibitor of growth (ING) family members in health and malignancy. Cancer Cell Int 2022; 22:272. [PMID: 36056353 PMCID: PMC9438315 DOI: 10.1186/s12935-022-02693-w] [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: 05/09/2022] [Accepted: 08/22/2022] [Indexed: 11/10/2022] Open
Abstract
ING genes belong to family of tumor suppressor genes with regulatory functions on cell proliferation, apoptosis, and cellular senescence. These include a family of proteins with 5 members (ING1-5), which are downregulated in human malignancies and/or affected by pathogenic mutations. ING proteins are highly evolutionarily conserved proteins containing several domains through which bind to chromatin structures by exerting their effects as readers of histone modification marks, and also binding to proteins like p53 involved in biological processes such as cell cycle regulation. Further, they are known as subunits of histone acetylation as well as deacetylation complexes and so exert their regulatory roles through epigenetic mechanisms. Playing role in restriction of proliferative but also invasive potentials of normal cells, INGs are particularly involved in cancer development and progression. However, additional studies and experimental confirmation are required for these models. This paper highlights the potential impact that INGs may have on the development of human cancer and explores what new information has recently arise on the functions of ING genes.
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Affiliation(s)
- Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany.,Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Kurdistan Region, Erbil, Iraq.,Center of Research and Strategic Studies, Lebanese French University, Erbil, Kurdistan Region, Iraq
| | - Sajad Najafi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Atefe Abak
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Majid Samsami
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Aria Baniahmad
- Institute of Human Genetics, Jena University Hospital, Jena, Germany.
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Wang YH, Sheetz MP. When PIP2 Meets p53: Nuclear Phosphoinositide Signaling in the DNA Damage Response. Front Cell Dev Biol 2022; 10:903994. [PMID: 35646908 PMCID: PMC9136457 DOI: 10.3389/fcell.2022.903994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
The mechanisms that maintain genome stability are critical for preventing tumor progression. In the past decades, many strategies were developed for cancer treatment to disrupt the DNA repair machinery or alter repair pathway selection. Evidence indicates that alterations in nuclear phosphoinositide lipids occur rapidly in response to genotoxic stresses. This implies that nuclear phosphoinositides are an upstream element involved in DNA damage signaling. Phosphoinositides constitute a new signaling interface for DNA repair pathway selection and hence a new opportunity for developing cancer treatment strategies. However, our understanding of the underlying mechanisms by which nuclear phosphoinositides regulate DNA damage repair, and particularly the dynamics of those processes, is rather limited. This is partly because there are a limited number of techniques that can monitor changes in the location and/or abundance of nuclear phosphoinositide lipids in real time and in live cells. This review summarizes our current knowledge regarding the roles of nuclear phosphoinositides in DNA damage response with an emphasis on the dynamics of these processes. Based upon recent findings, there is a novel model for p53’s role with nuclear phosphoinositides in DNA damage response that provides new targets for synthetic lethality of tumors.
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Gupta R, Jha A, Ambasta RK, Kumar P. Regulatory mechanism of cyclins and cyclin-dependent kinases in post-mitotic neuronal cell division. Life Sci 2021; 285:120006. [PMID: 34606852 DOI: 10.1016/j.lfs.2021.120006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/24/2021] [Accepted: 09/25/2021] [Indexed: 12/18/2022]
Abstract
Neurodegenerative diseases (NDDs) are the most common life-threatening disease of the central nervous system and it cause the progressive loss of neuronal cells. The exact mechanism of the disease's progression is not clear and thus line of treatment for NDDs is a baffling issue. During the progression of NDDs, oxidative stress and DNA damage play an important regulatory function, and ultimately induces neurodegeneration. Recently, aberrant cell cycle events have been demonstrated in the progression of different NDDs. However, the pertinent role of signaling mechanism, for instance, post-translational modifications, oxidative stress, DNA damage response pathway, JNK/p38 MAPK, MEK/ERK cascade, actively participated in the aberrant cell cycle reentry induced neuronal cell death. Mounting evidence has demonstrated that aberrant cell cycle re-entry is a major contributing factor in the pathogenesis of NDDs rather than a secondary phenomenon. In the brain of AD patients with mild cognitive impairment, post miotic cell division can be seen in the early stage of the disease. However, in the brain of PD patients, response to various neurotoxic signals, the cell cycle re-entry has been observed that causes neuronal apoptosis. On contrary, the contributing factors that leads to the induction of cell cycle events in mature neurons in HD and ALS brain pathology is remain unclear. Various pharmacological drugs have been developed to reduce the pathogenesis of NDDs, but they are still not helpful in eliminating the cause of these NDDs.
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Affiliation(s)
- Rohan Gupta
- Molecular Neuroscience and Functional Genomics Laboratory, Delhi Technological University (Formerly Delhi College of Engineering), India
| | - Ankita Jha
- Molecular Neuroscience and Functional Genomics Laboratory, Delhi Technological University (Formerly Delhi College of Engineering), India
| | - Rashmi K Ambasta
- Molecular Neuroscience and Functional Genomics Laboratory, Delhi Technological University (Formerly Delhi College of Engineering), India
| | - Pravir Kumar
- Molecular Neuroscience and Functional Genomics Laboratory, Delhi Technological University (Formerly Delhi College of Engineering), India.
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Yang Y, Li C, Gu X, Zhen J, Zhu S, Lv T, Wan Q, Liu Y. ING2 Controls Mitochondrial Respiration via Modulating MRPL12 Ubiquitination in Renal Tubular Epithelial Cells. Front Cell Dev Biol 2021; 9:700195. [PMID: 34434929 PMCID: PMC8380824 DOI: 10.3389/fcell.2021.700195] [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: 04/25/2021] [Accepted: 06/24/2021] [Indexed: 11/13/2022] Open
Abstract
Mitochondrial injury of tubular epithelial cells (TECs) is the key pathogenic event underlying various kidney diseases and a potential intervening target as well. Our previous study demonstrated that ING2 is ubiquitously expressed at tubulointerstitial area within kidneys, while its role in regulating TEC mitochondrial respiration is not fully elucidated. To clarify the roles of ING2 in mitochondrial homeostasis of TECs and pathogenesis of acute ischemic kidney injury, Western blot, PCR, immunofluorescence, immunoprecipitation, and oxygen consumption rate assay were applied to address the roles of ING2 in modulating mitochondrial respiration. We further complemented these studies with acute ischemic kidney injury both in vitro and in vivo. In vitro study demonstrated ING2 could positively control TEC mitochondrial respiration. Concurrently, both mRNA and protein levels of mtDNA encoded respiratory chain components were altered by ING2, suggesting ING2 could regulate mtDNA transcription. In mechanism, ING2 could regulate the ubiquitination of a newly identified mitochondrial transcription factor MRPL12, thereby modulating its cellular stability and abundance. We also demonstrated ING2-mediated modulation on mtDNA transcription and mitochondrial respiration are involved in serum deprivation induced TEC injuries. Finally, immunohistochemistry study revealed that ING2 expression was significantly altered in kidney biopsies with acute ischemic kidney injury. In vivo study suggested that kidney specific ING2 overexpression could effectively ameliorate acute ischemic kidney injury. Our study demonstrated that ING2 is a crucial modulator of TEC mitochondrial respiration. These findings suggested a unrecognized role of ING2 in TEC mitochondrial energetic homeostasis and a potential intervening target for TEC mitochondrial injury associated pathologies.
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Affiliation(s)
- Ying Yang
- Department of Pharmacy, The Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.,Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Chensheng Li
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xia Gu
- School of Medicine, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Junhui Zhen
- Department of Pathology, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Suwei Zhu
- School of Medicine, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Tingting Lv
- School of Medicine, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Qiang Wan
- Central Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Yi Liu
- Department of Pulmonary and Critical Care Medicine, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Pulmonary and Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Shandong Key Laboratory of Infectious Respiratory Disease, Jinan, China
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Shatnawi A, Abu Rabe DI, Frigo DE. Roles of the tumor suppressor inhibitor of growth family member 4 (ING4) in cancer. Adv Cancer Res 2021; 152:225-262. [PMID: 34353439 DOI: 10.1016/bs.acr.2021.05.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Inhibitor of growth family member 4 (ING4) is best known as a tumor suppressor that is frequently downregulated, deleted, or mutated in many cancers. ING4 regulates a broad array of tumor-related processes including proliferation, apoptosis, migration, autophagy, invasion, angiogenesis, DNA repair and chromatin remodeling. ING4 alters local chromatin structure by functioning as an epigenetic reader of H3K4 trimethylation histone marks (H3K4Me3) and regulating gene transcription through directing histone acetyltransferase (HAT) and histone deacetylase (HDAC) protein complexes. ING4 may serve as a useful prognostic biomarker for many cancer types and help guide treatment decisions. This review provides an overview of ING4's central functions in gene expression and summarizes current literature on the role of ING4 in cancer and its possible use in therapy.
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Affiliation(s)
- Aymen Shatnawi
- Department of Pharmaceutical and Administrative Sciences, University of Charleston School of Pharmacy, Charleston, WV, United States.
| | - Dina I Abu Rabe
- Integrated Bioscience Program, North Carolina Central University, Durham, NC, United States
| | - Daniel E Frigo
- Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX, United States; Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, United States
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Jacquet K, Binda O. ING Proteins: Tumour Suppressors or Oncoproteins. Cancers (Basel) 2021; 13:cancers13092110. [PMID: 33925563 PMCID: PMC8123807 DOI: 10.3390/cancers13092110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 03/25/2021] [Indexed: 02/06/2023] Open
Abstract
The INhibitor of Growth family was defined in the mid-1990s by the identification of a tumour suppressor, ING1, and subsequent expansion of the family based essentially on sequence similarities. However, later work and more recent investigations demonstrate that at least a few ING proteins are actually required for normal proliferation of eukaryotic cells, from yeast to human. ING proteins are also part of a larger family of chromatin-associated factors marked by a plant homeodomain (PHD), which mediates interactions with methylated lysine residues. Herein, we discuss the role of ING proteins and their various roles in chromatin signalling in the context of cancer development and progression.
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Affiliation(s)
- Karine Jacquet
- Institut NeuroMyoGène (INMG), Université Claude Bernard Lyon 1, Université de Lyon, CNRS UMR 5310, INSERM U 1217, 69008 Lyon, France;
| | - Olivier Binda
- Institut NeuroMyoGène (INMG), Université Claude Bernard Lyon 1, Université de Lyon, CNRS UMR 5310, INSERM U 1217, 69008 Lyon, France;
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
- Correspondence:
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12
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Li XH, Li D, Liu C, Zhang MM, Guan XJ, Fu YP. p33ING1b regulates acetylation of p53 in oral squamous cell carcinoma via SIR2. Cancer Cell Int 2020; 20:398. [PMID: 32831651 PMCID: PMC7436958 DOI: 10.1186/s12935-020-01489-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 08/04/2020] [Accepted: 08/08/2020] [Indexed: 01/10/2023] Open
Abstract
Background Oral squamous cell carcinoma (OSCC), a form of head and neck squamous cell carcinoma (HNSCC) has a poor 5-year survival rate. OSCC patients are often treated with cisplatin but resistance to chemotherapy is often observed. This makes it important identification of alternative therapeutic targets which will result in more favorable outcome in OSCC patients. The plant homeodomain (PHD)-containing protein Inhibitor of Growth family of tumor suppressor proteins (p33ING1b) has been indicated as a tumor suppressor in different cancers including OSCC. This protein has been shown to function by modulating transcriptional activity of p53; however, the exact mechanism(s) are not well defined. Methods Expression of total and acetylated p53 and p33ING1b protein was determined in OSCC cell lines YD-9, YD-8, and YD-38 by immunoblot analysis. Effect of modulation of p33ING1b protein expression on acetylation of p53 and cell proliferation was determined by immunoblot and MTT assay. Effect of modulation of p33ING1b protein expression on transactivation of p53 was assessed by heterologous promoter-based reporter and chromatin immunoprecipitation. Effect of modulation of expression of p33ING1b on SIR2 mRNA and protein was determined by quantitative real-time PCR and immunoblot analyses. Impact of modulation of p33ING1b alone or in combination with SIR2 on chemosensitivity of YD-9 and YD-8 cells to cisplatin was determined in time and dose-dependent cell proliferation assays. Results Here, using a panel of OSCC cell lines with wild type or mutant p53, we show that p33ING1b expression is correlated to acetylation of p53 at lysine 382 residue. Increased acetylation of p53 following overexpression of p33ING1b was associated with increased expression of the pro-apoptotic proteins BAX, p21, and cleaved-Caspase 3, and decreased cell proliferation. Reporter assays with p21 and BAX promoters showed that p33ING1b expression levels directly correlated to promoter activity of these 2 genes. Chromatin immunoprecipitation assay showed that transcriptional regulation of p21 and BAX by acetylated p53 is dependent on expression level of p33ING1b. Differential acetylation of p53 following modulation of p33ING1b expression was indirect. Expression of p33ING1b was found to be inversely correlated to the NAD-dependent deacetylase silent information regulator 2 (SIR2). SIR2 was transcriptionally regulated by p33ING1b. Relative expression of p33ING1b was found to dictate chemosensitivity of OSCC cell lines to cisplatin treatment. Concomitant overexpression of p33ING1b and knockdown of SIR2 had a synergistic effect on chemosensitivity of OSCC cell lines to cisplatin, compared to either overexpression of p33ING1b or knockdown of SIR2 alone. Conclusions The results from the current study thus elucidate that p33ING1b regulates p53 acetylation irrespective of p53 mutation and subsequent transactivation by transcriptional regulation of SIR2 expression. The results also indicate that p33ING1b and SIR2 are potentially attractive therapeutic targets.
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Affiliation(s)
- Xiao-Han Li
- Department of Pathology, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Shenyang, 110004 Liaoning China
| | - Dan Li
- Department of Pathology, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Shenyang, 110004 Liaoning China
| | - Chang Liu
- Department of Pathology, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Shenyang, 110004 Liaoning China
| | - Ming-Ming Zhang
- Department of Pathology, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Shenyang, 110004 Liaoning China
| | - Xiao-Jiao Guan
- Department of Pathology, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Shenyang, 110004 Liaoning China
| | - Ya-Ping Fu
- Department of Pathology, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Shenyang, 110004 Liaoning China
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13
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Chen M, Wen T, Horn HT, Chandrahas VK, Thapa N, Choi S, Cryns VL, Anderson RA. The nuclear phosphoinositide response to stress. Cell Cycle 2020; 19:268-289. [PMID: 31902273 PMCID: PMC7028212 DOI: 10.1080/15384101.2019.1711316] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Accumulating evidence reveals that nuclear phosphoinositides (PIs) serve as central signaling hubs that control a multitude of nuclear processes by regulating the activity of nuclear proteins. In response to cellular stressors, PIs accumulate in the nucleus and multiple PI isomers are synthesized by the actions of PI-metabolizing enzymes, kinases, phosphatases and phospholipases. By directly interacting with effector proteins, phosphoinositide signals transduce changes in cellular functions. Here we describe nuclear phosphoinositide signaling in multiple sub-nuclear compartments and summarize the literature that demonstrates roles for specific kinases, phosphatases, and phospholipases in the orchestration of nuclear phosphoinositide signaling in response to cellular stress. Additionally, we discuss the specific PI-protein complexes through which these lipids execute their functions by regulating the configuration, stability, and transcription activity of their effector proteins. Overall, our review provides a detailed landscape of the current understanding of the nuclear PI-protein interactome and its role in shaping the coordinated response to cellular stress.
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Affiliation(s)
- Mo Chen
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Tianmu Wen
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Hudson T. Horn
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | | | - Narendra Thapa
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Suyong Choi
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Vincent L. Cryns
- Department of Medicine, University of Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Richard A. Anderson
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
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Archambeau J, Blondel A, Pedeux R. Focus-ING on DNA Integrity: Implication of ING Proteins in Cell Cycle Regulation and DNA Repair Modulation. Cancers (Basel) 2019; 12:cancers12010058. [PMID: 31878273 PMCID: PMC7017203 DOI: 10.3390/cancers12010058] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/20/2019] [Accepted: 12/21/2019] [Indexed: 12/16/2022] Open
Abstract
The ING family of tumor suppressor genes is composed of five members (ING1-5) involved in cell cycle regulation, DNA damage response, apoptosis and senescence. All ING proteins belong to various HAT or HDAC complexes and participate in chromatin remodeling that is essential for genomic stability and signaling pathways. The gatekeeper functions of the INGs are well described by their role in the negative regulation of the cell cycle, notably by modulating the stability of p53 or the p300 HAT activity. However, the caretaker functions are described only for ING1, ING2 and ING3. This is due to their involvement in DNA repair such as ING1 that participates not only in NERs after UV-induced damage, but also in DSB repair in which ING2 and ING3 are required for accumulation of ATM, 53BP1 and BRCA1 near the lesion and for the subsequent repair. This review summarizes evidence of the critical roles of ING proteins in cell cycle regulation and DNA repair to maintain genomic stability.
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15
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Dantas A, Al Shueili B, Yang Y, Nabbi A, Fink D, Riabowol K. Biological Functions of the ING Proteins. Cancers (Basel) 2019; 11:E1817. [PMID: 31752342 PMCID: PMC6896041 DOI: 10.3390/cancers11111817] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 11/07/2019] [Indexed: 02/06/2023] Open
Abstract
The proteins belonging to the inhibitor of growth (ING) family of proteins serve as epigenetic readers of the H3K4Me3 histone mark of active gene transcription and target histone acetyltransferase (HAT) or histone deacetylase (HDAC) protein complexes, in order to alter local chromatin structure. These multidomain adaptor proteins interact with numerous other proteins to facilitate their localization and the regulation of numerous biochemical pathways that impinge upon biological functions. Knockout of some of the ING genes in murine models by various groups has verified their status as tumor suppressors, with ING1 knockout resulting in the formation of large clear-cell B-lymphomas and ING2 knockout increasing the frequency of ameloblastomas, among other phenotypic effects. ING4 knockout strongly affects innate immunity and angiogenesis, and INGs1, ING2, and ING4 have been reported to affect apoptosis in different cellular models. Although ING3 and ING5 knockouts have yet to be published, preliminary reports indicate that ING3 knockout results in embryonic lethality and that ING5 knockout may have postpartum effects on stem cell maintenance. In this review, we compile the known information on the domains of the INGs and the effects of altering ING protein expression, to better understand the functions of this adaptor protein family and its possible uses for targeted cancer therapy.
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Affiliation(s)
- Arthur Dantas
- Arnie Charbonneau Cancer Institute, Departments of Biochemistry and Molecular Biology and Oncology, University of Calgary, 374 HMRB, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada; (A.D.); (B.A.S.); (Y.Y.)
| | - Buthaina Al Shueili
- Arnie Charbonneau Cancer Institute, Departments of Biochemistry and Molecular Biology and Oncology, University of Calgary, 374 HMRB, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada; (A.D.); (B.A.S.); (Y.Y.)
| | - Yang Yang
- Arnie Charbonneau Cancer Institute, Departments of Biochemistry and Molecular Biology and Oncology, University of Calgary, 374 HMRB, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada; (A.D.); (B.A.S.); (Y.Y.)
| | - Arash Nabbi
- Princess Margaret Cancer Centre, Toronto, ON M5G 2M9, Canada
| | - Dieter Fink
- Institute of Laboratory Animal Science, Department for Biomedical Sciences, University of Veterinary Medicine Vienna, 1210 Vienna, Austria;
| | - Karl Riabowol
- Arnie Charbonneau Cancer Institute, Departments of Biochemistry and Molecular Biology and Oncology, University of Calgary, 374 HMRB, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada; (A.D.); (B.A.S.); (Y.Y.)
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16
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Blondel A, Benberghout A, Pedeux R, Ricordel C. Exploiting ING2 Epigenetic Modulation as a Therapeutic Opportunity for Non-Small Cell Lung Cancer. Cancers (Basel) 2019; 11:cancers11101601. [PMID: 31640185 PMCID: PMC6827349 DOI: 10.3390/cancers11101601] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 10/11/2019] [Indexed: 02/07/2023] Open
Abstract
Non-small cell lung cancer (NSCLC) has been the leading cause of cancer-related death worldwide, over the last few decades. Survival remains extremely poor in the metastatic setting and, consequently, innovative therapeutic strategies are urgently needed. Inhibitor of Growth Gene 2 (ING2) is a core component of the mSin3A/Histone deacetylases complex (HDAC), which controls the chromatin acetylation status and modulates gene transcription. This gene has been characterized as a tumor suppressor gene and its status in cancer has been scarcely explored. In this review, we focused on ING2 and other mSin3A/HDAC member statuses in NSCLC. Taking advantage of existing public databases and known pharmacological properties of HDAC inhibitors, finally, we proposed a therapeutic model based on an ING2 biomarker-guided strategy.
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Affiliation(s)
- Alice Blondel
- INSERM U1242, Chemistry Oncogenesis Stress and Signaling, CLCC Eugène Marquis, 35033 Rennes, France.
| | - Amine Benberghout
- INSERM U1242, Chemistry Oncogenesis Stress and Signaling, CLCC Eugène Marquis, 35033 Rennes, France.
| | - Rémy Pedeux
- INSERM U1242, Chemistry Oncogenesis Stress and Signaling, CLCC Eugène Marquis, 35033 Rennes, France.
| | - Charles Ricordel
- INSERM U1242, Chemistry Oncogenesis Stress and Signaling, CLCC Eugène Marquis, 35033 Rennes, France.
- CHU Rennes, Service de Pneumologie, Université de Rennes 1, 35033 Rennes, France.
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17
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Nuclear Phosphoinositides-Versatile Regulators of Genome Functions. Cells 2019; 8:cells8070649. [PMID: 31261688 PMCID: PMC6678639 DOI: 10.3390/cells8070649] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/21/2019] [Accepted: 06/25/2019] [Indexed: 12/17/2022] Open
Abstract
The many functions of phosphoinositides in cytosolic signaling were extensively studied; however, their activities in the cell nucleus are much less clear. In this review, we summarize data about their nuclear localization and metabolism, and review the available literature on their involvements in chromatin remodeling, gene transcription, and RNA processing. We discuss the molecular mechanisms via which nuclear phosphoinositides, in particular phosphatidylinositol (4,5)-bisphosphate (PI(4,5)P2), modulate nuclear processes. We focus on PI(4,5)P2’s role in the modulation of RNA polymerase I activity, and functions of the nuclear lipid islets—recently described nucleoplasmic PI(4,5)P2-rich compartment involved in RNA polymerase II transcription. In conclusion, the high impact of the phosphoinositide–protein complexes on nuclear organization and genome functions is only now emerging and deserves further thorough studies.
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18
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Regulat-INGs in tumors and diseases: Focus on ncRNAs. Cancer Lett 2019; 447:66-74. [PMID: 30673590 DOI: 10.1016/j.canlet.2019.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 12/21/2018] [Accepted: 01/08/2019] [Indexed: 12/11/2022]
Abstract
ING family genes (Inhibitor of Growth) are tumor suppressor genes that play a vital role in cell homeostasis. It has been shown that their expression is lost or diminished in many cancers and other diseases. The main mechanisms by which they are regulated in oncogenesis have not yet been fully elucidated. The involvement of non-coding RNAs (ncRNAs) and in particular microRNAs (miRNAs) in post-transcriptional gene regulation is well established. miRNAs are short sequences (18-25 nucleotides) that can bind to the 3 'UTR sequence of the targeted messenger RNA (mRNA), leading to its degradation or translational repression. Interactions between the ING family and miRNAs have been described in some cancers but also in other diseases. The involvement of miRNAs in ING family regulation opens up new fields of investigation, particularly for targeted therapies. In this review, we will summarize the regulatory mechanisms at the RNA and protein level of the ING family and focus on the interactions with ncRNAs.
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19
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Peng J, Wang S, Fan W, Li S, Wu Y, Mou X, Wang J, Tong X. Synergistic suppression effect on tumor growth of acute myeloid leukemia by combining cytarabine with an engineered oncolytic vaccinia virus. Onco Targets Ther 2018; 11:6887-6900. [PMID: 30410347 PMCID: PMC6199215 DOI: 10.2147/ott.s172037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND In consideration of the drug resistance and side effects associated with cytarabine, one of the most effective drugs for the treatment of acute myeloid leukemia (AML), there is a need for safer and effective strategies. METHODS In the present investigation, we fabricated a new oncolytic vaccinia virus (oVV-ING4), which expresses the inhibitor of growth family member 4 (ING4) and explored its antitumor activity individually and in combination with cytarabine in AML cells. RESULTS The experiments confirmed that oVV can efficiently and specifically infect leukemia cells, and augment the ING4 gene expression. Flow cytometry and western blot demonstrated that oVV-ING4 enhances apoptosis and G2/M phase arrest in AML cells, and causes remarkable cancer cell death. In addition, the synergistic efficiency of oVV-ING4 and cytarabine was investigated in vitro and in vivo; the combination significantly inhibited the survival of leukemia cells in vitro and xenografted KG-1 AML tumor growth in vivo. CONCLUSION In brief, oVV-ING4 can increase the sensitivity of leukemia cells to cytarabine and induce cell apoptosis in vitro and in vivo. Thus, oVV-ING4 may be a promising therapeutic candidate for leukemia and in combination with cytarabine represents a potential antitumor therapy.
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Affiliation(s)
- Jiamin Peng
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China,
| | - Shibing Wang
- Clinical Research Institute, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China,
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Hangzhou 310014, China,
| | - Weimin Fan
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China,
| | - Shuangshuang Li
- Clinical Research Institute, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China,
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Hangzhou 310014, China,
| | - Yi Wu
- Department of Hematology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Xiaozhou Mou
- Clinical Research Institute, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China,
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Hangzhou 310014, China,
| | - Jianchao Wang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China,
- Department of Clinical Laboratory, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310015, China
| | - Xiangmin Tong
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China,
- Clinical Research Institute, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China,
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Hangzhou 310014, China,
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20
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Gao Y, Ma H, Gao C, Lv Y, Chen X, Xu R, Sun M, Liu X, Lu X, Pei X, Li P. Tumor-promoting properties of miR-8084 in breast cancer through enhancing proliferation, suppressing apoptosis and inducing epithelial-mesenchymal transition. J Transl Med 2018; 16:38. [PMID: 29471858 PMCID: PMC5824560 DOI: 10.1186/s12967-018-1419-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 02/18/2018] [Indexed: 02/06/2023] Open
Abstract
Background Breast cancer is one of the most frequent malignancies and the second leading cause of cancer-related mortality in women. MicroRNAs play a key role in breast cancer development and progression. microRNA(miR)-8084 has been observed an aberrant expression in breast cancer. However, the functions and regulatory axes of miR-8084, particularly in breast cancer, were not entirely clear. Methods miR-8084 expression in breast cancer were investigated in a GEO dataset by in silico analysis and in 42 paired tumor tissues by qPCR. The effects of deregulation of miR-8084 on breast cancer cell proliferation, migration and invasion in vitro and tumorigenicity in vivo were examined by colony-formation assay, wound healing assay, transwell assay and nude mouse subcutaneous tumor formation model. The target gene of miR-8084 were predicted by TargetScan and miRDB, and confirmed by luciferase reporter system. The roles of miR-8084 in the breast cancer cell proliferation, apoptosis and epithelial–mesenchymal transition (EMT) were investigated by MTS, FACS and associated-marker detection by western blot. Results miR-8084 is significantly up-regulated in both serum and malignant tissues from the source of breast cancer patients. miR-8084 promotes the proliferation of breast cancer cells by activating ERK1/2 and AKT. Meanwhile miR-8084 inhibits apoptosis by decreasing p53-BAX related pathway. miR-8084 also enhances migration and invasion by inducing EMT. Moreover, the tumor suppressor ING2 is a potential target of miR-8084, and miR-8084 regulatory axes contribute to pro-tumor effect, at least partially through regulating ING2. Conclusion Our results strongly suggest that miR-8084 functions as an oncogene that promotes the development and progression of breast cancer, and miR-8084 is a potential new diagnostic marker and therapeutic target of breast cancer.
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Affiliation(s)
- Yujing Gao
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China.
| | - Hongning Ma
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Chanchan Gao
- Department of Oncology, Zhongda Hospital, Southeast University, Nanjing, China
| | - Ye Lv
- Oncology Department of Cancer Hospital, General Hospital, Ningxia Medical University, Yinchuan, China
| | - XueHua Chen
- Department of Pediatrics, Ruijin Hospital and Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, 197 Ruijin Er Rd, Shanghai, 200025, People's Republic of China
| | - Rongrong Xu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Miao Sun
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Xinrui Liu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Xiaohong Lu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Xiuying Pei
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China.
| | - Pu Li
- Department of Pediatrics, Ruijin Hospital and Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, 197 Ruijin Er Rd, Shanghai, 200025, People's Republic of China.
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21
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Ohkouchi C, Kumamoto K, Saito M, Ishigame T, Suzuki SI, Takenoshita S, Harris CC. ING2, a tumor associated gene, enhances PAI‑1 and HSPA1A expression with HDAC1 and mSin3A through the PHD domain and C‑terminal. Mol Med Rep 2017; 16:7367-7374. [PMID: 28944862 PMCID: PMC5865867 DOI: 10.3892/mmr.2017.7553] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 09/12/2017] [Indexed: 12/21/2022] Open
Abstract
Inhibitor of growth 2 (ING2) is involved in chromatin remodeling and it has previously been suggested that ING2 may regulate gene expression. The authors previously identified matrix metalloproteinase 13 (MMP13) as a target gene of ING2 in colorectal cancer. The aim of the present study was to identify novel genes regulated by ING2 and histone deacetylase 1 (HDAC1) and to clarify the biological significance of the ING2 structure. The present study generated the point mutant constructs of ING2 and deletion constructs consisting of partial ING2 to investigate the effect on gene expression and verify the interaction with HDAC1, mSin3A and sap30. A microarray was performed to find novel ING2/HDAC1 target genes using cell co-overexpression of ING2 and HDAC1. Plasminogen activator inhibitor-1 (PAI-1) was upregulated with overexpression of ING1b and ING2. The mutation of the PHD domain at 218 significantly attenuated the MMP13 and PAI-1 expression, whereas the mutation at 224 resulted in increased expression. Furthermore, the expression levels were slightly reduced by the mutation of the C-terminal. The lack of the PHD domain and the C-terminal in ING2 resulted in a decreased ability to induce gene expression. The C-terminal with PHD domain, which lacked the N-terminal, maintained the transactive function for regulating the target genes. In addition to MMP13 and PAI-1, eight genes [heat shock protein family A member 1A (HSPA1A), MIR7-3 host gene, chorionic somatomammotropin hormone 1, growth arrest and DNA damage inducible b, dehydrogenase/reductase 2, galectin 1, myosin light chain 1, and VGF nerve growth factor inducible] were demonstrated to be associated with ING2/HDAC1. The present study demonstrated that ING2/HDAC1 regulated PAI-1 and HSPA1A expression and the PHD domain and the C-terminal of ING2, which are binding sites of HDAC1 and mSin3A, are essential regions for the regulation of gene expression.
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Affiliation(s)
- Chiyo Ohkouchi
- Department of Thyroid and Endocrinology, Fukushima Medical University School of Medicine, Fukushima 960‑1295, Japan
| | - Kensuke Kumamoto
- Department of Coloproctology, Aizu Medical Center, Fukushima Medical University, Aizuwakamatsu, Fukushima 969‑3492, Japan
| | - Motonobu Saito
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Teruhide Ishigame
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Shin-Ichi Suzuki
- Department of Thyroid and Endocrinology, Fukushima Medical University School of Medicine, Fukushima 960‑1295, Japan
| | - Seiichi Takenoshita
- Department of Organ Regulatory Surgery, Fukushima Medical University School of Medicine, Fukushima 960‑1295, Japan
| | - Cutis C Harris
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
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Haviv R, Oz E, Soreq H. The Stress-Responding miR-132-3p Shows Evolutionarily Conserved Pathway Interactions. Cell Mol Neurobiol 2017; 38:141-153. [PMID: 28667373 PMCID: PMC5775983 DOI: 10.1007/s10571-017-0515-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/22/2017] [Indexed: 02/06/2023]
Abstract
MicroRNAs (miRNAs) are small non-coding RNA chains that can each interact with the 3′-untranslated region of multiple target transcripts in various organisms, humans included. MiRNAs tune entire biological pathways, spanning stress reactions, by regulating the stability and/or translation of their targets. MiRNA genes are often subject to co-evolutionary changes together with their target transcripts, which may be reflected by differences between paralog mouse and primate miRNA/mRNA pairs. However, whether such evolution occurred in stress-related miRNAs remained largely unknown. Here, we report that the stress-induced evolutionarily conserved miR-132-3p, its target transcripts and its regulated pathways provide an intriguing example to exceptionally robust conservation. Mice and human miR-132-3p share six experimentally validated targets and 18 predicted targets with a common miRNA response element. Enrichment analysis and mining in-house and web-available experimental data identified co-regulation by miR-132 in mice and humans of stress-related, inflammatory, metabolic, and neuronal growth pathways. Our findings demonstrate pan-mammalian preservation of miR-132′s neuronal roles, and call for further exploring the corresponding stress-related implications.
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Affiliation(s)
- Rotem Haviv
- Department of Biological Chemistry, The Silberman Institute of Life Sciences and the Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 9190401, Jerusalem, Israel
| | - Eden Oz
- Department of Biological Chemistry, The Silberman Institute of Life Sciences and the Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 9190401, Jerusalem, Israel
| | - Hermona Soreq
- Department of Biological Chemistry, The Silberman Institute of Life Sciences and the Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 9190401, Jerusalem, Israel.
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23
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Nabbi A, McClurg UL, Thalappilly S, Almami A, Mobahat M, Bismar TA, Binda O, Riabowol KT. ING3 promotes prostate cancer growth by activating the androgen receptor. BMC Med 2017; 15:103. [PMID: 28511652 PMCID: PMC5434536 DOI: 10.1186/s12916-017-0854-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 04/07/2017] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The androgen receptor (AR) is a major driver of prostate cancer, and increased AR levels and co-activators of the receptor promote the development of prostate cancer. INhibitor of Growth (ING) proteins target lysine acetyltransferase or lysine deacetylase complexes to the histone H3K4Me3 mark of active transcription, to affect chromatin structure and gene expression. ING3 is a stoichiometric member of the TIP60 lysine acetyltransferase complex implicated in prostate cancer development. METHODS Biopsies of 265 patients with prostate cancer were stained for ING3, pan-cytokeratin, and DNA. LNCaP and C4-2 androgen-responsive cells were used for in vitro assays including immunoprecipitation, western blotting, Luciferase reporter assay and quantitative polymerase chain reaction. Cell viability and migration assays were performed in prostate cancer cell lines using scrambled siRNA or siRNA targeting ING3. RESULTS We find that ING3 levels and AR activity positively correlate in prostate cancer. ING3 potentiates androgen effects, increasing expression of androgen-regulated genes and androgen response element-driven reporters to promote growth and anchorage-independent growth. Conversely, ING3 knockdown inhibits prostate cancer cell growth and invasion. ING3 activates the AR by serving as a scaffold to increase interaction between TIP60 and the AR in the cytoplasm, enhancing receptor acetylation and translocation to the nucleus. Activation is independent of ING3's ability to target the TIP60 complex to H3K4Me3, identifying a previously unknown chromatin-independent cytoplasmic activity for ING3. In agreement with in vitro observations, analysis of The Cancer Genome Atlas (TCGA) data (n = 498) and a prostate cancer tissue microarray (n = 256) show that ING3 levels are higher in aggressive prostate cancers, with high levels of ING3 predicting shorter patient survival in a low AR subgroup. Including ING3 levels with currently used indicators such as the Gleason score provides more accurate prognosis in primary prostate cancer. CONCLUSIONS In contrast to the majority of previous reports suggesting tumor suppressive functions in other cancers, our observations identify a clear oncogenic role for ING3, which acts as a co-activator of AR in prostate cancer. Data from TCGA and our previous and current tissue microarrays suggest that ING3 levels correlate with AR levels and that in patients with low levels of the receptor, ING3 level could serve as a useful prognostic biomarker.
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Affiliation(s)
- Arash Nabbi
- Department of Biochemistry & Molecular Biology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Urszula L McClurg
- Solid Tumour Target Discovery Laboratory, Newcastle Cancer Centre, Northern Institute for Cancer Research, Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Subhash Thalappilly
- Department of Biochemistry & Molecular Biology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Amal Almami
- Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Department of Pathology & Laboratory Medicine, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Mahsa Mobahat
- Department of Biochemistry & Molecular Biology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Tarek A Bismar
- Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Department of Pathology & Laboratory Medicine, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Olivier Binda
- Newcastle Cancer Centre at the Northern Institute for Cancer Research, Newcastle University, Paul O'Gorman Building, Medical School, Framlington Place, Newcastle upon Tyne, England, NE2 4HH, UK.
| | - Karl T Riabowol
- Department of Biochemistry & Molecular Biology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada. .,Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada. .,, #311 HMRB, 3330 Hospital Dr. NW, Calgary, Alberta, T2N 4N1, Canada.
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24
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Hamann BL, Blind RD. Nuclear phosphoinositide regulation of chromatin. J Cell Physiol 2017; 233:107-123. [PMID: 28256711 DOI: 10.1002/jcp.25886] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 03/01/2017] [Indexed: 12/26/2022]
Abstract
Phospholipid signaling has clear connections to a wide array of cellular processes, particularly in gene expression and in controlling the chromatin biology of cells. However, most of the work elucidating how phospholipid signaling pathways contribute to cellular physiology have studied cytoplasmic membranes, while relatively little attention has been paid to the role of phospholipid signaling in the nucleus. Recent work from several labs has shown that nuclear phospholipid signaling can have important roles that are specific to this cellular compartment. This review focuses on the nuclear phospholipid functions and the activities of phospholipid signaling enzymes that regulate metazoan chromatin and gene expression. In particular, we highlight the roles that nuclear phosphoinositides play in several nuclear-driven physiological processes, such as differentiation, proliferation, and gene expression. Taken together, the recent discovery of several specifically nuclear phospholipid functions could have dramatic impact on our understanding of the fundamental mechanisms that enable tight control of cellular physiology.
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Affiliation(s)
- Bree L Hamann
- Division of Diabetes Endocrinology and Metabolism, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Raymond D Blind
- Division of Diabetes Endocrinology and Metabolism, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee.,Departments of Medicine, Biochemistry and Pharmacology, Division of Diabetes Endocrinology and Metabolism, The Vanderbilt Diabetes Research and Training Center and the Vanderbilt-Ingram Cancer Center, Nashville, Tennessee
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25
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Affiliation(s)
- Gesche Tallen
- Department of Paediatrics, Faculty of Medicine, University of Calgary, Canada.,Department of Paediatric Haematology and Oncology, University Medical Centre Hamburg-Eppendorf (UKE), Germany
| | - Karl Riabowol
- Departments of Biochemistry & Molecular Biology and Oncology, Cumming School of Medicine, University of Calgary, Canada
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26
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Wright DG, Marchal C, Hoang K, Ankney JA, Nguyen ST, Rushing AW, Polakowski N, Miotto B, Lemasson I. Human T-cell leukemia virus type-1-encoded protein HBZ represses p53 function by inhibiting the acetyltransferase activity of p300/CBP and HBO1. Oncotarget 2016; 7:1687-706. [PMID: 26625199 PMCID: PMC4811490 DOI: 10.18632/oncotarget.6424] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 11/15/2015] [Indexed: 01/31/2023] Open
Abstract
Adult T-cell leukemia (ATL) is an often fatal malignancy caused by infection with the complex retrovirus, human T-cell Leukemia Virus, type 1 (HTLV-1). In ATL patient samples, the tumor suppressor, p53, is infrequently mutated; however, it has been shown to be inactivated by the viral protein, Tax. Here, we show that another HTLV-1 protein, HBZ, represses p53 activity. In HCT116 p53+/+ cells treated with the DNA-damaging agent, etoposide, HBZ reduced p53-mediated activation of p21/CDKN1A and GADD45A expression, which was associated with a delay in G2 phase-arrest. These effects were attributed to direct inhibition of the histone acetyltransferase (HAT) activity of p300/CBP by HBZ, causing a reduction in p53 acetylation, which has be linked to decreased p53 activity. In addition, HBZ bound to, and inhibited the HAT activity of HBO1. Although HBO1 did not acetylate p53, it acted as a coactivator for p53 at the p21/CDKN1A promoter. Therefore, through interactions with two separate HAT proteins, HBZ impairs the ability of p53 to activate transcription. This mechanism may explain how p53 activity is restricted in ATL cells that do not express Tax due to modifications of the HTLV-1 provirus, which accounts for a majority of patient samples.
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Affiliation(s)
- Diana G Wright
- Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC, USA
| | - Claire Marchal
- Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate, UMR 7216, CNRS, Paris, France
| | - Kimson Hoang
- Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC, USA
| | - John A Ankney
- Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC, USA.,Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Stephanie T Nguyen
- Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC, USA
| | - Amanda W Rushing
- Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC, USA
| | - Nicholas Polakowski
- Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC, USA
| | - Benoit Miotto
- Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate, UMR 7216, CNRS, Paris, France.,INSERM, U1016, Institut Cochin, Paris, France.,CNRS, UMR8104, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Isabelle Lemasson
- Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC, USA
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27
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Zhang R, Jin J, Shi J, Hou Y. INGs are potential drug targets for cancer. J Cancer Res Clin Oncol 2016; 143:189-197. [PMID: 27544390 DOI: 10.1007/s00432-016-2219-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 08/09/2016] [Indexed: 12/11/2022]
Abstract
PURPOSE The inhibitor of growth (ING) family consists of ING1, ING2, ING3, ING4 and ING5, which function as the type II tumor suppressors. INGs regulate cell proliferation, senescence, apoptosis, differentiation, angiogenesis, DNA repair, metastasis, and invasion by multiple pathways. In addition, INGs increase cancer cell sensitivity for chemotherapy and radiotherapy, while clinical observations show that INGs are frequently lost in some types of cancers. The aim of the study was to summarize the recent progress regarding INGs regulating tumor progression. METHODS The literatures of INGs regulating tumor progression were searched and assayed. RESULTS The regulating signaling pathways of ING1, ING2, ING3 or ING4 on tumor progression were shown. The mechanisms of INGs on tumor suppression were also assayed. CONCLUSIONS This review better summarized the signaling mechanism of INGs on tumor suppression, which provides a candidate therapy strategy for cancers.
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Affiliation(s)
- Runyun Zhang
- Department of Oncology, Affiliated Wujin People's Hospital, Jiangsu University, Changzhou, 212017, People's Republic of China.,Institute of Life Sciences, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Jianhua Jin
- Department of Oncology, Affiliated Wujin People's Hospital, Jiangsu University, Changzhou, 212017, People's Republic of China
| | - Juanjuan Shi
- Institute of Life Sciences, Jiangsu University, Zhenjiang, 212013, People's Republic of China.
| | - Yongzhong Hou
- Department of Oncology, Affiliated Wujin People's Hospital, Jiangsu University, Changzhou, 212017, People's Republic of China. .,Institute of Life Sciences, Jiangsu University, Zhenjiang, 212013, People's Republic of China.
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28
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Pan X, Wang R, Bian H, De W, Zhang P, Wei C, Wang Z. Overexpression of Inhibitor of Growth 4 Enhances Radiosensitivity in Non-Small Cell Lung Cancer Cell Line SPC-A1. Technol Cancer Res Treat 2016; 16:533-545. [PMID: 27381846 DOI: 10.1177/1533034616656315] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Inhibitor of growth 4 is a member of the inhibitor of growth family proteins, which is involved in cell apoptosis, migration, invasion, and cell cycle progress. In this study, we investigated the inhibitor of growth 4 level in non-small cell lung cancer tissues and explored the antitumor activity of inhibitor of growth 4 in vitro and in vivo using non-small cell lung cancer cell line SPC-A1 and its underlying molecular mechanisms. We also explored its role on the radiosensitivity in SPC-A1 cells. The level of inhibitor of growth 4 protein was significantly decreased in 28 cases of non-small cell lung cancer tissues in comparison with corresponding noncancerous lung epithelial tissues. Upregulation of inhibitor of growth 4 by plasmid pcDNA3.1-ING4 delivery could suppress proliferation and increase apoptosis of SPC-A1 cells both in vitro and in vivo. Additionally, we found that overexpression of inhibitor of growth 4 in SPC-A1 cell line could lead to a higher Bcl-2/Bax ratio, which might be an important factor in the apoptosis regulation. Furthermore, overexpression of inhibitor of growth 4 enhanced the radiosensitivity of SPC-A1 cells to irradiation. Inhibitor of growth 4 upregulation plus radiotherapy induced synergistic tumor suppression in SPC-A1 xenografts implanted in athymic nude mice. Thus, the restoration of inhibitor of growth 4 function might provide a potential strategy for non-small cell lung cancer radiosensitization.
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Affiliation(s)
- Xuan Pan
- 1 Department of Medical Oncology, Nanjing Medical University Affiliated Cancer Hospital of Jiangsu Province, Cancer Institution of Jiangsu Province, Nanjing, China
- 2 Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Rui Wang
- 3 Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Haibo Bian
- 2 Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wei De
- 4 Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, China
| | - Ping Zhang
- 5 Department of Pathology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Chenchen Wei
- 2 Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhaoxia Wang
- 2 Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
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29
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Kim S, Natesan S, Cornilescu G, Carlson S, Tonelli M, McClurg UL, Binda O, Robson CN, Markley JL, Balaz S, Glass KC. Mechanism of Histone H3K4me3 Recognition by the Plant Homeodomain of Inhibitor of Growth 3. J Biol Chem 2016; 291:18326-41. [PMID: 27281824 PMCID: PMC5000080 DOI: 10.1074/jbc.m115.690651] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Indexed: 12/23/2022] Open
Abstract
Aberrant access to genetic information disrupts cellular homeostasis and can lead to cancer development. One molecular mechanism that regulates access to genetic information includes recognition of histone modifications, which is carried out by protein modules that interact with chromatin and serve as landing pads for enzymatic activities that regulate gene expression. The ING3 tumor suppressor protein contains a plant homeodomain (PHD) that reads the epigenetic code via recognition of histone H3 tri-methylated at lysine 4 (H3K4me3), and this domain is lost or mutated in various human cancers. However, the molecular mechanisms targeting ING3 to histones and the role of this interaction in the cell remain elusive. Thus, we employed biochemical and structural biology approaches to investigate the interaction of the ING3 PHD finger (ING3PHD) with the active transcription mark H3K4me3. Our results demonstrate that association of the ING3PHD with H3K4me3 is in the sub-micromolar range (KD ranging between 0.63 and 0.93 μm) and is about 200-fold stronger than with the unmodified histone H3. NMR and computational studies revealed an aromatic cage composed of Tyr-362, Ser-369, and Trp-385 that accommodate the tri-methylated side chain of H3K4. Mutational analysis confirmed the critical importance of Tyr-362 and Trp-385 in mediating the ING3PHD-H3K4me3 interaction. Finally, the biological relevance of ING3PHD-H3K4me3 binding was demonstrated by the failure of ING3PHD mutant proteins to enhance ING3-mediated DNA damage-dependent cell death. Together, our results reveal the molecular mechanism of H3K4me3 selection by the ING3PHD and suggest that this interaction is important for mediating ING3 tumor suppressive activities.
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Affiliation(s)
- Sophia Kim
- From the Department of Pharmaceutical Sciences, Albany College of Pharmacy and Health Sciences, Colchester, Vermont 05446
| | - Senthil Natesan
- From the Department of Pharmaceutical Sciences, Albany College of Pharmacy and Health Sciences, Colchester, Vermont 05446
| | - Gabriel Cornilescu
- the National Magnetic Resonance Facility at Madison and Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, and
| | - Samuel Carlson
- From the Department of Pharmaceutical Sciences, Albany College of Pharmacy and Health Sciences, Colchester, Vermont 05446
| | - Marco Tonelli
- the National Magnetic Resonance Facility at Madison and Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, and
| | - Urszula L McClurg
- the Newcastle Cancer Centre at the Northern Institute for Cancer Research, Newcastle University, Newcastle Upon Tyne NE2 4HH, United Kingdom
| | - Olivier Binda
- the Newcastle Cancer Centre at the Northern Institute for Cancer Research, Newcastle University, Newcastle Upon Tyne NE2 4HH, United Kingdom
| | - Craig N Robson
- the Newcastle Cancer Centre at the Northern Institute for Cancer Research, Newcastle University, Newcastle Upon Tyne NE2 4HH, United Kingdom
| | - John L Markley
- the National Magnetic Resonance Facility at Madison and Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, and
| | - Stefan Balaz
- From the Department of Pharmaceutical Sciences, Albany College of Pharmacy and Health Sciences, Colchester, Vermont 05446
| | - Karen C Glass
- From the Department of Pharmaceutical Sciences, Albany College of Pharmacy and Health Sciences, Colchester, Vermont 05446,
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30
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ZHAO SHUANG, YANG XUEFENG, GOU WENFENG, LU HANG, LI HUA, ZHU ZHITU, SUN HONGZHI, ZHENG HUACHUAN. Expression profiles of inhibitor of growth protein 2 in normal and cancer tissues: An immunohistochemical screening analysis. Mol Med Rep 2015; 13:1881-7. [DOI: 10.3892/mmr.2015.4723] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 08/25/2015] [Indexed: 11/06/2022] Open
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31
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Jia AI, Lv Y, Guo X, Ren LI, Qin J. Ectopic expression of p33 ING1b suppresses proliferation and induces apoptosis in colonic adenocarcinoma cells. Oncol Lett 2015; 10:1517-1522. [PMID: 26622701 DOI: 10.3892/ol.2015.3385] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Accepted: 05/12/2015] [Indexed: 12/12/2022] Open
Abstract
Inhibitor of growth 1b (ING1b) is considered to be a class II tumor suppressor gene. Although decreased expression of p33ING1b has previously been reported in colorectal cancer (CRC), its role in CRC has remained to be elucidated. The present study was designed to assess the function of p33ING1b in CRC and to further evaluate its underlying mechanisms of action. Western blot analysis confirmed that ING1b gene expression was significantly decreased in CRC tissues compared with that of adjacent non-tumorous colorectal tissues. Furthermore, recombinant adenovirus-mediated ectopic expression of p33ING1b resulted in growth inhibition, G1-phase cell cycle arrest and apoptosis in the SW480, HT29 and LoVo colorectal adenocarcinoma cell lines. The results suggested that the downregulation of ING1b contributes to colorectal carcinogenesis and that ectopic expression of ING1b may be a potentially useful therapeutic approach for CRC.
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Affiliation(s)
- A I Jia
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yifei Lv
- Department of Gastroenterology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
| | - Xueyan Guo
- Department of Gastroenterology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
| | - L I Ren
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jie Qin
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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32
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Yang H, Yan B, Liao D, Huang S, Qiu Y. Acetylation of HDAC1 and degradation of SIRT1 form a positive feedback loop to regulate p53 acetylation during heat-shock stress. Cell Death Dis 2015; 6:e1747. [PMID: 25950477 PMCID: PMC4669686 DOI: 10.1038/cddis.2015.106] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 02/24/2015] [Accepted: 03/10/2015] [Indexed: 01/11/2023]
Abstract
The tumor suppressor p53 is an essential transcription factor that sensitively regulates cellular responses to various stresses. Acetylation, a critically important posttranslational modification of p53, is induced in response to cellular stresses. P53 acetylation level strongly correlates with protein stability and activity. The steady-state level of p53 acetylation is balanced by dynamic acetylation and deacetylation. Despite the function of p53 acetylation being well studied, how the steady state of p53 acetylation level is regulated in response to cellular stresses remains unclear. In particular, the dynamic regulation of the deacetylase activities responsible for p53 deacetylation during cellular stress is unknown. In the current study, we investigated the dynamic regulation of HDAC1 (histone deacetylase 1) and SIRT1 (sirtuin 1), two major enzymes for p53 deacetylation, during cell stress. We found that various cell stress events induce HDAC1 acetylation. The increased level of HDAC1 acetylation correlates with the level of p53 acetylation. Acetylated HDAC1 loses the ability to deacetylate p53. Cellular stresses also promote the decline of the SIRT1 protein in a proteasome-dependent pathway, which also results in the increase of p53 acetylation. Importantly, the decreased level of SIRT1 also contributes to the accumulation of HDAC1 acetylation as SIRT1 deacetylates HDAC1. Therefore, the increase of HDAC1 acetylation and reduced level of SIRT1 protein during cellular stress directly link to the induction of p53 acetylation. These results unveil the mechanism underlying the dynamic regulation of p53 acetylation during cell stress.
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Affiliation(s)
- H Yang
- Department of Anatomy and Cell Biology, College of Medicine, University of Florida, Gainsville, FL 32610, USA
| | - B Yan
- Department of Anatomy and Cell Biology, College of Medicine, University of Florida, Gainsville, FL 32610, USA
| | - D Liao
- Department of Anatomy and Cell Biology, College of Medicine, University of Florida, Gainsville, FL 32610, USA
| | - S Huang
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Y Qiu
- Department of Anatomy and Cell Biology, College of Medicine, University of Florida, Gainsville, FL 32610, USA
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33
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Linzen U, Lilischkis R, Pandithage R, Schilling B, Ullius A, Lüscher-Firzlaff J, Kremmer E, Lüscher B, Vervoorts J. ING5 is phosphorylated by CDK2 and controls cell proliferation independently of p53. PLoS One 2015; 10:e0123736. [PMID: 25860957 PMCID: PMC4393124 DOI: 10.1371/journal.pone.0123736] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 02/27/2015] [Indexed: 11/19/2022] Open
Abstract
Inhibitor of growth (ING) proteins have multiple functions in the control of cell proliferation, mainly by regulating processes associated with chromatin regulation and gene expression. ING5 has been described to regulate aspects of gene transcription and replication. Moreover deregulation of ING5 is observed in different tumors, potentially functioning as a tumor suppressor. Gene transcription in late G1 and in S phase and replication is regulated by cyclin-dependent kinase 2 (CDK2) in complex with cyclin E or cyclin A. CDK2 complexes phosphorylate and regulate several substrate proteins relevant for overcoming the restriction point and promoting S phase. We have identified ING5 as a novel CDK2 substrate. ING5 is phosphorylated at a single site, threonine 152, by cyclin E/CDK2 and cyclin A/CDK2 in vitro. This site is also phosphorylated in cells in a cell cycle dependent manner, consistent with it being a CDK2 substrate. Furthermore overexpression of cyclin E/CDK2 stimulates while the CDK2 inhibitor p27KIP1 represses phosphorylation at threonine 152. This site is located in a bipartite nuclear localization sequence but its phosphorylation was not sufficient to deregulate the subcellular localization of ING5. Although ING5 interacts with the tumor suppressor p53, we could not establish p53-dependent regulation of cell proliferation by ING5 and by phospho-site mutants. Instead we observed that the knockdown of ING5 resulted in a strong reduction of proliferation in different tumor cell lines, irrespective of the p53 status. This inhibition of proliferation was at least in part due to the induction of apoptosis. In summary we identified a phosphorylation site at threonine 152 of ING5 that is cell cycle regulated and we observed that ING5 is necessary for tumor cell proliferation, without any apparent dependency on the tumor suppressor p53.
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Affiliation(s)
- Ulrike Linzen
- Institute of Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Pauwelsstrasse 30, 52057, Aachen, Germany
| | - Richard Lilischkis
- Institute of Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Pauwelsstrasse 30, 52057, Aachen, Germany
| | - Ruwin Pandithage
- Institute of Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Pauwelsstrasse 30, 52057, Aachen, Germany
| | - Britta Schilling
- Institute of Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Pauwelsstrasse 30, 52057, Aachen, Germany
| | - Andrea Ullius
- Institute of Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Pauwelsstrasse 30, 52057, Aachen, Germany
| | - Juliane Lüscher-Firzlaff
- Institute of Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Pauwelsstrasse 30, 52057, Aachen, Germany
| | - Elisabeth Kremmer
- Helmholtz Zentrum München, Institute of Molecular Immunology, Marchioninistrasse 25, 81377, München, Germany
| | - Bernhard Lüscher
- Institute of Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Pauwelsstrasse 30, 52057, Aachen, Germany
- * E-mail: (BL); (JV)
| | - Jörg Vervoorts
- Institute of Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Pauwelsstrasse 30, 52057, Aachen, Germany
- * E-mail: (BL); (JV)
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34
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Nabbi A, Almami A, Thakur S, Suzuki K, Boland D, Bismar TA, Riabowol K. ING3 protein expression profiling in normal human tissues suggest its role in cellular growth and self-renewal. Eur J Cell Biol 2015; 94:214-22. [PMID: 25819753 DOI: 10.1016/j.ejcb.2015.03.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 03/03/2015] [Accepted: 03/03/2015] [Indexed: 12/17/2022] Open
Abstract
Members of the INhibitor of Growth (ING) family of proteins act as readers of the epigenetic code through specific recognition of the trimethylated form of lysine 4 of histone H3 (H3K4Me3) by their plant homeodomains. The founding member of the family, ING1, was initially identified as a tumor suppressor with altered regulation in a variety of cancer types. While alterations in ING1 and ING4 levels have been reported in a variety of cancer types, little is known regarding ING3 protein levels in normal or transformed cells due to a lack of reliable immunological tools. In this study we present the characterization of a new monoclonal antibody we have developed against ING3 that specifically recognizes human and mouse ING3. The antibody works in western blots, immunofluorescence, immunoprecipitation and immunohistochemistry. Using this antibody we show that ING3 is most highly expressed in small intestine, bone marrow and epidermis, tissues in which cells undergo rapid proliferation and renewal. Consistent with this observation, we show that ING3 is expressed at significantly higher levels in proliferating versus quiescent epithelial cells. These data suggest that ING3 levels may serve as a surrogate for growth rate, and suggest possible roles for ING3 in growth and self renewal and related diseases such as cancer.
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Affiliation(s)
- Arash Nabbi
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Oncology, Southern Alberta Cancer Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Amal Almami
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Oncology, Southern Alberta Cancer Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Satbir Thakur
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Oncology, Southern Alberta Cancer Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Keiko Suzuki
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Oncology, Southern Alberta Cancer Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Donna Boland
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Oncology, Southern Alberta Cancer Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Tarek A Bismar
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Oncology, Southern Alberta Cancer Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Pathology & Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Karl Riabowol
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Oncology, Southern Alberta Cancer Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
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35
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Abstract
ING2 (inhibitor of growth protein-2) is a member of the ING-gene family and participates in diverse cellular processes involving tumor suppression, DNA repair, cell cycle regulation, and cellular senescence. As a subunit of the Sin3 histone deacetylase complex co-repressor complex, ING2 binds to H3K4me3 to regulate chromatin modification and gene expression. Additionally, ING2 recruits histone methyltransferase (HMT) activity for gene repression, which is independent of the HDAC class I or II pathway. However, the physiological function of ING2 in mouse preimplantation embryo development has not yet been characterized previously. The expression, localization and function of ING2 during preimplantation development were investigated in this study. We showed increasing expression of ING2 within the nucleus from the 4-cell embryo stage onwards; and that down-regulation of ING2 expression by endoribonuclease-prepared small interfering RNA (esiRNA) microinjection results in developmental arrest during the morula to blastocyst transition. Embryonic cells microinjected with ING2-specific esiRNA exhibited decreased blastulation rate compared to the negative control. Further investigation of the underlying mechanism indicated that down-regulation of ING2 significantly increased expression of p21, whilst decreasing expression of HDAC1. These results suggest that ING2 may play a crucial role in the process of preimplantation embryo development through chromatin regulation.
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36
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A novel tumor suppressor gene in basal cell carcinoma: inhibition of growth factor-2. Tumour Biol 2015; 36:4611-6. [PMID: 25613071 DOI: 10.1007/s13277-015-3108-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 01/14/2015] [Indexed: 01/02/2023] Open
Abstract
In loss of heterozygosity (LOH) studies at the chromosome 4q22-35 region, it was shown that the amount of deletion was high in basal cell carcinoma (BCC). It has been proposed that genes located in this chromosomal region could be tumor suppressor genes in BCC. It has been thought that deletions in the ING2 gene located in the same region can play a role in the pathophysiology of BCC and that deletions occurring in this region may influence the level of ING2 expression in BCC. Tumoral and non-tumoral tissues from 75 patients with BCC (45 men and 30 women) were included to the study. Lesions were excised by a surgical margin of 0.5 cm. After excision, RNA was isolated from tumoral and non-tumoral tissue samples. ING2 messenger RNA (mRNA) expression level was determined in tumoral and non-tumoral tissues by the real-time polymerase chain reaction (RT-PCR). It was detected that ING2 mRNA expression level decreased in tumoral tissues when compared to non-tumoral tissues from BCC patients (p = 0.0001). It was found that expression levels of this gene were comparable among patients with primary, recurrent, or multiple BCC. It is thought that ING2 gene expression level could contribute to the development of BCC but not be associated with the stage and the prognosis of the tumor.
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Reed SM, Quelle DE. p53 Acetylation: Regulation and Consequences. Cancers (Basel) 2014; 7:30-69. [PMID: 25545885 PMCID: PMC4381250 DOI: 10.3390/cancers7010030] [Citation(s) in RCA: 227] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 12/12/2014] [Indexed: 12/11/2022] Open
Abstract
Post-translational modifications of p53 are critical in modulating its tumor suppressive functions. Ubiquitylation, for example, plays a major role in dictating p53 stability, subcellular localization and transcriptional vs. non-transcriptional activities. Less is known about p53 acetylation. It has been shown to govern p53 transcriptional activity, selection of growth inhibitory vs. apoptotic gene targets, and biological outcomes in response to diverse cellular insults. Yet recent in vivo evidence from mouse models questions the importance of p53 acetylation (at least at certain sites) as well as canonical p53 functions (cell cycle arrest, senescence and apoptosis) to tumor suppression. This review discusses the cumulative findings regarding p53 acetylation, with a focus on the acetyltransferases that modify p53 and the mechanisms regulating their activity. We also evaluate what is known regarding the influence of other post-translational modifications of p53 on its acetylation, and conclude with the current outlook on how p53 acetylation affects tumor suppression. Due to redundancies in p53 control and growing understanding that individual modifications largely fine-tune p53 activity rather than switch it on or off, many questions still remain about the physiological importance of p53 acetylation to its role in preventing cancer.
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Affiliation(s)
- Sara M Reed
- Department of Pharmacology, The University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.
| | - Dawn E Quelle
- Department of Pharmacology, The University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.
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HAN XIAORUI, BAI XIZHUANG, SUN YU, YANG YAN. Nuclear ING2 expression is reduced in osteosarcoma. Oncol Rep 2014; 32:1967-72. [DOI: 10.3892/or.2014.3458] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 08/05/2014] [Indexed: 11/06/2022] Open
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Satpathy S, Guérillon C, Kim TS, Bigot N, Thakur S, Bonni S, Riabowol K, Pedeux R. SUMOylation of the ING1b tumor suppressor regulates gene transcription. Carcinogenesis 2014; 35:2214-23. [PMID: 24903338 DOI: 10.1093/carcin/bgu126] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The INhibitor of Growth (ING) proteins are encoded as multiple isoforms in five ING genes (ING1 -5) and act as type II tumor suppressors. They are growth inhibitory when overexpressed and are frequently mislocalized or downregulated in several forms of cancer. ING1 and ING2 are stoichiometric members of histone deacetylase complexes, whereas ING3-5 are stoichiometric components of different histone acetyltransferase complexes. The INGs target these complexes to histone marks, thus acting as epigenetic regulators. ING proteins affect angiogenesis, apoptosis, DNA repair, metastasis and senescence, but how the proteins themselves are regulated is not yet clear. Here, we find a small ubiquitin-like modification (SUMOylation) of the ING1b protein and identify lysine 193 (K193) as the preferred ING1b SUMO acceptor site. We also show that PIAS4 is the E3 SUMO ligase responsible for ING1b SUMOylation on K193. Sequence alignment reveals that the SUMO consensus site on ING1b contains a phosphorylation-dependent SUMOylation motif (PDSM) and our data indicate that the SUMOylation on K193 is enhanced by the S199D phosphomimic mutant. Using an ING1b protein mutated at the major SUMOylation site (ING1b E195A), we further demonstrate that ING1b SUMOylation regulates the binding of ING1b to the ISG15 and DGCR8 promoters, consequently regulating ISG15 and DGCR8 transcription. These results suggest a role for ING1b SUMOylation in the regulation of gene transcription.
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Affiliation(s)
- Shankha Satpathy
- Department of Biochemistry and Molecular Biology, Southern Alberta Cancer Research Institute, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada, Present address: The Novo Nordisk Foundation Center for Protein Research, Copenhagen, Denmark
| | - Claire Guérillon
- INSERM U917, Microenvironnement et Cancer, 350043 Rennes, France, Université de Rennes 1, 350043 Rennes, France and
| | - Tae-Sun Kim
- Department of Biochemistry and Molecular Biology, Southern Alberta Cancer Research Institute, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Nicolas Bigot
- INSERM U917, Microenvironnement et Cancer, 350043 Rennes, France, Université de Rennes 1, 350043 Rennes, France and
| | - Satbir Thakur
- INSERM U917, Microenvironnement et Cancer, 350043 Rennes, France
| | - Shirin Bonni
- INSERM U917, Microenvironnement et Cancer, 350043 Rennes, France
| | - Karl Riabowol
- Department of Biochemistry and Molecular Biology, Southern Alberta Cancer Research Institute, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada,
| | - Rémy Pedeux
- INSERM U917, Microenvironnement et Cancer, 350043 Rennes, France
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Guérillon C, Bigot N, Pedeux R. The ING tumor suppressor genes: Status in human tumors. Cancer Lett 2014; 345:1-16. [DOI: 10.1016/j.canlet.2013.11.016] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 11/27/2013] [Accepted: 11/29/2013] [Indexed: 12/18/2022]
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Keep-ING balance: tumor suppression by epigenetic regulation. FEBS Lett 2014; 588:2728-42. [PMID: 24632289 DOI: 10.1016/j.febslet.2014.03.011] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 03/06/2014] [Indexed: 12/26/2022]
Abstract
Cancer cells accumulate genetic and epigenetic changes that alter gene expression to drive tumorigenesis. Epigenetic silencing of tumor suppressor, cell cycle, differentiation and DNA repair genes contributes to neoplastic transformation. The ING (inhibitor of growth) proteins (ING1-ING5) have emerged as a versatile family of growth regulators, phospholipid effectors, histone mark sensors and core components of HDAC1/2 - and several HAT chromatin-modifying complexes. This review will describe the characteristic pathways by which ING family proteins differentially affect the Hallmarks of Cancer and highlight the various epigenetic mechanisms by which they regulate gene expression. Finally, we will discuss their potentials as biomarkers and therapeutic targets in epigenetic treatment strategies.
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Zhong J, Yang L, Liu N, Zheng J, Lin CY. Knockdown of inhibitor of growth protein 2 inhibits cell invasion and enhances chemosensitivity to 5-FU in human gastric cancer cells. Dig Dis Sci 2013; 58:3189-97. [PMID: 23864195 DOI: 10.1007/s10620-013-2796-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 07/02/2013] [Indexed: 01/14/2023]
Abstract
BACKGROUND The inhibitor of growth (ING) family is involved in multiple cellular functions, but the role of ING2 in gastric cancer progression is unclear. AIM To investigate the effects of ING2 gene knockdown on chemosensitivity to 5-fluorouracil (5-FU) in human gastric cancer cells and its possible mechanisms. METHODS Short hairpin RNA (shRNA) targeting ING2 (shING2) was transfected into MGC-803 cells using Lipofectamine 2000, and stable transfection cell lines were established using G418. Cell viability, cell cycle distribution, cell apoptosis, and invasive ability were measured to determine the influence of ING2 knockdown on cell biologic characteristics. Messenger RNA (mRNA) and protein levels of ING2, cyclin D1, NF-kappaB/p65, and several matrix metalloproteinases (MMPs) were determined by use of real-time polymerase chain reaction (PCR) or Western blotting, respectively. RESULTS Our results showed that ING2 knockdown induced cell apoptosis and inhibited cell viability significantly (P < 0.05). Additionally, ING2 knockdown induced a specific G0/G1 arrest. Furthermore, the suppression of ING2 could enhance the chemosensitivity of gastric cancer cells to 5-FU significantly. Moreover, knockdown of ING2 expression significantly reduced cellular metastatic ability and expression of MMPs in MGC-803 cells. The expression of cyclin D1 and NF-kappaB/p65 was also markedly inhibited in MGC-803/shING2 cells compared with control cells. CONCLUSIONS ING2 not only plays an essential role in the growth and invasion of MGC-803 cells but also represents a potential approach to chemosensitization therapy in human gastric cancer.
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Affiliation(s)
- Juan Zhong
- Department of Oncology, The Fifth Hospital of Wuhan, No 122 Xianzheng Street, Hanyang District, Wuhan, 430050, Hubei, People's Republic of China,
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Guérillon C, Larrieu D, Pedeux R. ING1 and ING2: multifaceted tumor suppressor genes. Cell Mol Life Sci 2013; 70:3753-72. [PMID: 23412501 PMCID: PMC11113716 DOI: 10.1007/s00018-013-1270-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 01/14/2013] [Accepted: 01/17/2013] [Indexed: 01/27/2023]
Abstract
Inhibitor of Growth 1 (ING1) was identified and characterized as a "candidate" tumor suppressor gene in 1996. Subsequently, four more genes, also characterized as "candidate" tumor suppressor genes, were identified by homology search: ING2, ING3, ING4, and ING5. The ING proteins are characterized by a high homology in their C-terminal domain, which contains a Nuclear Localization Sequence and a Plant HomeoDomain (PHD), which has a high affinity to Histone 3 tri-methylated on lysine 4 (H3K4Me3). The ING proteins have been involved in the control of cell growth, senescence, apoptosis, chromatin remodeling, and DNA repair. Within the ING family, ING1 and ING2 form a subgroup since they are evolutionarily and functionally close. In yeast, only one gene, Pho23, is related to ING1 and ING2 and possesses also a PHD. Recently, the ING1 and ING2 tumor suppressor status has been fully established since several studies have described the loss of ING1 and ING2 protein expression in human tumors and both ING1 and ING2 knockout mice were reported to have spontaneously developed tumors, B cell lymphomas, and soft tissue sarcomas, respectively. In this review, we will describe for the first time what is known about the ING1 and ING2 genes, proteins, their regulations in both human and mice, and their status in human tumors. Furthermore, we explore the current knowledge about identified functions involving ING1 and ING2 in tumor suppression pathways especially in the control of cell cycle and in genome stability.
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Affiliation(s)
- Claire Guérillon
- INSERM U917, Faculté de Médecine de Rennes, Microenvironnement et Cancer, Building 2, Room 117, 2 avenue du Professeur Léon Bernard, 35043 Rennes, France
- Université de Rennes 1, Rennes, France
| | - Delphine Larrieu
- The Wellcome Trust and Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QN UK
| | - Rémy Pedeux
- INSERM U917, Faculté de Médecine de Rennes, Microenvironnement et Cancer, Building 2, Room 117, 2 avenue du Professeur Léon Bernard, 35043 Rennes, France
- Université de Rennes 1, Rennes, France
- Etablissement Français du Sang, Rennes, France
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Inhibitor of growth 1 (ING1) acts at early steps of multiple DNA repair pathways. Mol Cell Biochem 2013; 378:117-26. [DOI: 10.1007/s11010-013-1601-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Accepted: 02/23/2013] [Indexed: 01/13/2023]
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RegulatING chromatin regulators: post-translational modification of the ING family of epigenetic regulators. Biochem J 2013; 450:433-42. [DOI: 10.1042/bj20121632] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The five human ING genes encode at least 15 splicing isoforms, most of which affect cell growth, differentiation and apoptosis through their ability to alter gene expression by epigenetic mechanisms. Since their discovery in 1996, ING proteins have been classified as type II tumour suppressors on the basis of reports describing their down-regulation and mislocalization in a variety of cancer types. In addition to their regulation by transcriptional mechanisms, understanding the range of PTMs (post-translational modifications) of INGs is important in understanding how ING functions are fine-tuned in the physiological setting and how they add to the repertoire of activities affected by the INGs. In the present paper we review the different PTMs that have been reported to occur on INGs. We discuss the PTMs that modulate ING function under normal conditions and in response to a variety of stresses. We also describe the ING PTMs that have been identified by several unbiased MS-based PTM enrichment techniques and subsequent proteomic analysis. Among the ING PTMs identified to date, a subset has been characterized for their biological significance and have been shown to affect processes including subcellular localization, interaction with enzymatic complexes and ING protein half-life. The present review aims to highlight the emerging role of PTMs in regulating ING function and to suggest additional pathways and functions where PTMs may effect ING function.
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Jolliffe AK, Derry WB. The TP53 signaling network in mammals and worms. Brief Funct Genomics 2012; 12:129-41. [PMID: 23165352 DOI: 10.1093/bfgp/els047] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The nematode worm Caenorhabditis elegans has been an invaluable model organism for studying the molecular mechanisms that govern cell fate, from fundamental aspects of multicellular development to programmed cell death (apoptosis). The transparency of this organism permits visualization of cells in living animals at high resolution. The powerful genetics and functional genomics tools available in C. elegans allow for detailed analysis of gene function, including genes that are frequently deregulated in human diseases such as cancer. The TP53 protein is a critical suppressor of tumor formation in vertebrates, and the TP53 gene is mutated in over 50% of human cancers. TP53 suppresses malignancy by integrating a variety of cellular stresses that direct it to activate transcription of genes that help to repair the damage or trigger apoptotic death if the damage is beyond repair. The TP53 paralogs, TP63 and TP73, have distinct roles in development as well as overlapping functions with TP53 in apoptosis and repair, which complicates their analysis in vertebrates. C. elegans contains a single TP53 family member, cep-1, that shares properties of all three vertebrate genes and thus offers a simple system in which to study the biological functions of this important gene family. This review summarizes major advances in our understanding of the TP53 family using C. elegans as a model organism.
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Zhu ZL, Yan BY, Zhang Y, Yang YH, Wang ZM, Zhang HZ, Wang MW, Zhang XH, Sun XF. Cytoplasmic expression of p33(ING1b) is correlated with tumorigenesis and progression of human esophageal squamous cell carcinoma. Oncol Lett 2012; 5:161-166. [PMID: 23255913 DOI: 10.3892/ol.2012.983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Accepted: 10/05/2012] [Indexed: 01/17/2023] Open
Abstract
p33(ING1b), a newly discovered candidate tumor suppressor gene and a nuclear protein, belongs to the inhibitor of growth gene family. Previous studies have shown that p33(ING1b) is involved in the restriction of cell growth and proliferation, apoptosis, tumor anchorage-independent growth, cellular senescence, maintenance of genomic stability and modulation of cell cycle checkpoints. Loss of nuclear p33(ING1b) has been observed in melanoma, seminoma, papillary thyroid carcinoma, oral squamous cell carcinoma, breast ductal cancer and acute lymphoblastic leukemia. Inactivation and/or decreased expression of p33(ING1b) have been reported in various types of cancer, including head and neck squamous cell, breast, lung, stomach, blood and brain malignancies. Since little is known about the clinicopathological significance of p33(ING1b) in esophageal squamous cell carcinoma (ESCC), this study aimed to investigate the association of p33(ING1b) expression with clinicopathological variables and particularly interesting new cysteine-histidine rich protein (PINCH) in patients with ESCC. p33(ING1b) expression was examined by immunohistochemistry in 20 normal esophageal mucosa and in 64 ESCC specimens. The results revealed that the positive expression of p33(ING1b) protein in normal squamous cells was localized in the nucleus alone and the positive rate was 95%, while in ESCCs, the positive expression was mainly in the cytoplasm, together with nuclear expression, and the positive rate was 36% (P<0.0001). Furthermore, the cases with lymph node metastasis showed a higher frequency of positive cytoplasmic expression than those without metastasis (P=0.001). The cytoplasmic expression of p33(ING1b) was positively related to PINCH expression (P<0.0001) in ESCC, and the cases positive for both proteins had a high lymph node metastasis rate (P=0.001). In conclusion, p33(ING1b) cellular compartmental shift from the nucleus to the cytoplasm may cause loss of normal cellular function and play a central role in the tumorigenesis and metastasis of ESCC.
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Affiliation(s)
- Zhen-Long Zhu
- Department of Pathology, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei 050031; ; Graduate School of Hebei Medical University, Shijiazhuang, Hebei 050017
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Jafarnejad SM, Li G. Regulation of p53 by ING family members in suppression of tumor initiation and progression. Cancer Metastasis Rev 2012; 31:55-73. [PMID: 22095030 DOI: 10.1007/s10555-011-9329-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The INhibitor of Growth (ING) family is an evolutionarily conserved set of proteins, implicated in suppression of initiation and progression of cancers in various tissues. They promote cell cycle arrest, cellular senescence and apoptosis, participate in stress responses, regulate DNA replication and DNA damage responses, and inhibit cancer cell migration, invasion, and angiogenesis of the tumors. At the molecular level, ING proteins are believed to participate in chromatin remodeling and transcriptional regulation of their target genes. However, the best known function of ING proteins is their cooperation with p53 tumor suppressor protein in tumor suppression. All major isoforms of ING family members can promote the transactivition of p53 and the majority of them are shown to directly interact with p53. In addition, ING proteins are thought to interact with and modulate the function of auxiliary members of p53 pathway, such as MDM2, ARF , p300, and p21, indicating their widespread involvement in the regulation and function of this prominent tumor suppressor pathway. It seems that p53 pathway is the main mechanism by which ING proteins exert their functions. Nevertheless, regulation of other pathways which are not relevant to p53, yet important for tumorigenesis such as TGF-β and NF-κB, by ING proteins is also observed. This review summarizes the current understanding of the mutual interactions and cooperation between different members of ING family with p53 pathway and implications of this cooperation in the suppression of cancer initiation and progression.
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Affiliation(s)
- Seyed Mehdi Jafarnejad
- Department of Dermatology and Skin Science, University of British Columbia, Vancouver, BC, Canada
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Thakur S, Feng X, Qiao Shi Z, Ganapathy A, Kumar Mishra M, Atadja P, Morris D, Riabowol K. ING1 and 5-azacytidine act synergistically to block breast cancer cell growth. PLoS One 2012; 7:e43671. [PMID: 22916295 PMCID: PMC3423394 DOI: 10.1371/journal.pone.0043671] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Accepted: 07/23/2012] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Inhibitor of Growth (ING) proteins are epigenetic "readers" that recognize trimethylated lysine 4 of histone H3 (H3K4Me3) and target histone acetyl transferase (HAT) and histone deacetylase (HDAC) complexes to chromatin. METHODS AND PRINCIPAL FINDINGS Here we asked whether dysregulating two epigenetic pathways with chemical inhibitors showed synergistic effects on breast cancer cell line killing. We also tested whether ING1 could synergize better with chemotherapeutics that target the same epigenetic mechanism such as the HDAC inhibitor LBH589 (Panobinostat) or a different epigenetic mechanism such as 5-azacytidine (5azaC), which inhibits DNA methyl transferases. Simultaneous treatment of breast cancer cell lines with LBH589 and 5azaC did not show significant synergy in killing cells. However, combination treatment of ING1 with either LBH589 or 5azaC did show synergy. The combination of ING1b with 5azaC, which targets two distinct epigenetic mechanisms, was more effective at lower doses and enhanced apoptosis as determined by Annexin V staining and cleavage of caspase 3 and poly-ADP-ribose polymerase (PARP). ING1b plus 5azaC also acted synergistically to increase γH2AX staining indicating significant levels of DNA damage were induced. Adenoviral delivery of ING1b with 5azaC also inhibited cancer cell growth in a murine xenograft model and led to tumor regression when viral concentration was optimized in vivo. CONCLUSIONS These data show that targeting distinct epigenetic pathways can be more effective in blocking cancer cell line growth than targeting the same pathway with multiple agents, and that using viral delivery of epigenetic regulators can be more effective in synergizing with a chemical agent than using two chemotherapeutic agents. This study also indicates that the ING1 epigenetic regulator may have additional activities in the cell when expressed at high levels.
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Affiliation(s)
- Satbir Thakur
- Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta, Canada
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
| | - Xiaolan Feng
- Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta, Canada
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
| | - Zhong Qiao Shi
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
- Department of Medicine and Oncology, University of Calgary, Tom Baker Cancer Center, Calgary, Alberta, Canada
| | - Amudha Ganapathy
- Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta, Canada
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
| | - Manoj Kumar Mishra
- Department of Oncology and Clinical Neuroscience, University of Calgary, Calgary, Alberta, Canada
| | - Peter Atadja
- Novartis Institute for Biomedical Research, Shanghai, China
| | - Don Morris
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
- Department of Medicine and Oncology, University of Calgary, Tom Baker Cancer Center, Calgary, Alberta, Canada
| | - Karl Riabowol
- Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta, Canada
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
- * E-mail:
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Miranda-Sayago JM, Fernandez-Arcas N, Reyes-Engel A, Benito C, Narbona I, Alonso A. Changes in CDKN2D , TP53, and miR125a expression: potential role in the evaluation of human amniotic fluid-derived mesenchymal stromal cell fitness. Genes Cells 2012; 17:673-87. [PMID: 22747700 DOI: 10.1111/j.1365-2443.2012.01623.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Accepted: 04/22/2012] [Indexed: 11/27/2022]
Abstract
Human amniotic fluid-derived mesenchymal stromal cells (hAMSC) have become one of the main cell populations used in regenerative medicine and for the study of various clinical disorders. These cells have a great capacity for proliferation and differentiation and do not form teratomas when transplanted into animal models, and their stemness seems to be between embryonic cells and adult mesenchymal cells. Before their use in cell therapy, they must be cultured and expanded in vitro, but the effect this process has on their fitness, a determining factor for the success or failure of cell therapy, is unknown. We undertook a follow-up of gene and microRNAs (miRNAs) expression using microarray of hAMSC for the first 15 passages. Significant changes were noted in the expression of various mRNAs and miRNAs, particularly down-regulation of TP53, increased expression of hsa-miR-125a and up-regulation of CDKN2D . The variations in TP53 and hsa-miR-125a may act as an indicator of the stemness of the hAMSC, whereas CDKN2D may indicate the begging of early senescence process in a p53-independent mechanism. The genes described in this study will help evaluate the fitness of hAMSC, thus guaranteeing their biological quality for use in regenerative medicine.
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Affiliation(s)
- Jose M Miranda-Sayago
- Department of Immunology, Carlos Haya Regional University Hospital, Malaga 29010, Spain.
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