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Ma S, Dong Z, Cui Q, Liu JY, Zhang JT. eIF3i regulation of protein synthesis, cell proliferation, cell cycle progression, and tumorigenesis. Cancer Lett 2020; 500:11-20. [PMID: 33301799 DOI: 10.1016/j.canlet.2020.12.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/22/2020] [Accepted: 12/06/2020] [Indexed: 02/07/2023]
Abstract
eIF3i, a 36-kDa protein, is a putative subunit of the eIF3 complex important for translation initiation of mRNAs. It is a WD40 domain-containing protein with seven WD40 repeats that forms a β-propeller structure with an important function in pre-initiation complex formation and mRNA translation initiation. In addition to participating in the eIF3 complex formation for global translational control, eIF3i may bind to specific mRNAs and regulate their translation individually. Furthermore, eIF3i has been shown to bind to TGF-β type II receptor and participate in TGF-β signaling. It may also participate in and regulate other signaling pathways including Wnt/β-catenin pathway via translational regulation of COX-2 synthesis. These multiple canonical and noncanonical functions of eIF3i in translational control and in regulating signal transduction pathways may be responsible for its role in cell differentiation, cell cycle regulation, proliferation, and tumorigenesis. In this review, we will critically evaluate recent progresses and assess future prospects in studying eIF3i.
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Affiliation(s)
- Shijie Ma
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, 510095, China.
| | - Zizheng Dong
- Department of Cancer Biology, University of Toledo College of Medicine and Life Sciences, Toledo, OH, 43614, USA
| | - Qingbin Cui
- Department of Cancer Biology, University of Toledo College of Medicine and Life Sciences, Toledo, OH, 43614, USA
| | - Jing-Yuan Liu
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH, 43614, USA.
| | - Jian-Ting Zhang
- Department of Cancer Biology, University of Toledo College of Medicine and Life Sciences, Toledo, OH, 43614, USA.
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2
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Grafanaki K, Anastasakis D, Kyriakopoulos G, Skeparnias I, Georgiou S, Stathopoulos C. Translation regulation in skin cancer from a tRNA point of view. Epigenomics 2018; 11:215-245. [PMID: 30565492 DOI: 10.2217/epi-2018-0176] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Protein synthesis is a central and dynamic process, frequently deregulated in cancer through aberrant activation or expression of translation initiation factors and tRNAs. The discovery of tRNA-derived fragments, a new class of abundant and, in some cases stress-induced, small Noncoding RNAs has perplexed the epigenomics landscape and highlights the emerging regulatory role of tRNAs in translation and beyond. Skin is the biggest organ in human body, which maintains homeostasis of its multilayers through regulatory networks that induce translational reprogramming, and modulate tRNA transcription, modification and fragmentation, in response to various stress signals, like UV irradiation. In this review, we summarize recent knowledge on the role of translation regulation and tRNA biology in the alarming prevalence of skin cancer.
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Affiliation(s)
- Katerina Grafanaki
- Department of Biochemistry, School of Medicine, University of Patras, 26504 Patras, Greece.,Department of Dermatology, School of Medicine, University of Patras, 26504 Patras, Greece
| | - Dimitrios Anastasakis
- National Institute of Musculoskeletal & Arthritis & Skin, NIH, 50 South Drive, Room 1152, Bethesda, MD 20892, USA
| | - George Kyriakopoulos
- Department of Biochemistry, School of Medicine, University of Patras, 26504 Patras, Greece
| | - Ilias Skeparnias
- Department of Biochemistry, School of Medicine, University of Patras, 26504 Patras, Greece
| | - Sophia Georgiou
- Department of Dermatology, School of Medicine, University of Patras, 26504 Patras, Greece
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Ali MU, Ur Rahman MS, Jia Z, Jiang C. Eukaryotic translation initiation factors and cancer. Tumour Biol 2017; 39:1010428317709805. [PMID: 28653885 DOI: 10.1177/1010428317709805] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Recent technological advancements have shown tremendous mechanistic accomplishments in our understanding of the mechanism of messenger RNA translation in eukaryotic cells. Eukaryotic messenger RNA translation is very complex process that includes four phases (initiation, elongation, termination, and ribosome recycling) and diverse mechanisms involving protein and non-protein molecules. Translation regulation is principally achieved during initiation step of translation, which is organized by multiple eukaryotic translation initiation factors. Eukaryotic translation initiation factor proteins help in stabilizing the formation of the functional ribosome around the start codon and provide regulatory mechanisms in translation initiation. Dysregulated messenger RNA translation is a common feature of tumorigenesis. Various oncogenic and tumor suppressive genes affect/are affected by the translation machinery, making the components of the translation apparatus promising therapeutic targets for the novel anticancer drug. This review provides details on the role of eukaryotic translation initiation factors in messenger RNA translation initiation, their contribution to onset and progression of tumor, and how dysregulated eukaryotic translation initiation factors can be used as a target to treat carcinogenesis.
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Affiliation(s)
- Muhammad Umar Ali
- 1 Clinical Research Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Muhammad Saif Ur Rahman
- 1 Clinical Research Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhenyu Jia
- 2 Institute of Occupational Diseases, Zhejiang Academy of Medical Sciences, Hangzhou, China
| | - Cao Jiang
- 1 Clinical Research Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Hershey JWB. The role of eIF3 and its individual subunits in cancer. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2014; 1849:792-800. [PMID: 25450521 DOI: 10.1016/j.bbagrm.2014.10.005] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 10/28/2014] [Accepted: 10/28/2014] [Indexed: 12/15/2022]
Abstract
Specific individual subunits of eIF3 are elevated or reduced in numerous human tumors, and their ectopic overexpression in immortal cells can result in malignant transformation. The structure and assembly of eIF3 and its role in promoting mRNA and methionyl-tRNAi binding to the ribosome during the initiation phase of protein synthesis are described. Methods employed to detect altered levels of eIF3 subunits in cancers are critically evaluated in order to conclude rigorously that such subunits may cause malignant transformation. Strong evidence is presented that the individual overexpression of eIF3 subunits 3a, 3b, 3c, 3h, 3i and 3m may cause malignant transformation, whereas underexpression of subunits 3e and 3f may cause a similar outcome. Possible mechanisms to explain the malignant phenotypes are examined. The involvement of eIF3 in cancer reinforces the view that translational control plays an important role in the regulation of cell proliferation, and provides new targets for the development of therapeutic agents. This article is part of a Special Issue entitled: Translation and Cancer.
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Affiliation(s)
- John W B Hershey
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA 95616, United States.
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Qi J, Dong Z, Liu J, Zhang JT. EIF3i promotes colon oncogenesis by regulating COX-2 protein synthesis and β-catenin activation. Oncogene 2014; 33:4156-63. [PMID: 24056964 PMCID: PMC3962800 DOI: 10.1038/onc.2013.397] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 08/02/2013] [Accepted: 08/05/2013] [Indexed: 12/21/2022]
Abstract
Translational control of gene expression has recently been recognized as an important mechanism controlling cell proliferation and oncogenesis, and it mainly occurs in the initiation step of protein synthesis that involves multiple eukaryotic initiation factors (eIFs). Many eIFs have been found to have aberrant expression in human tumors and the aberrant expression may contribute to oncogenesis. However, how these previously considered house-keeping proteins are potentially oncogenic remains elusive. In this study, we investigated the expression of eIF3i in human colon cancers, tested its contribution to colon oncogenesis and determined the mechanism of eIF3i action in colon oncogenesis. We found that eIF3i expression was upregulated in both human colon adenocarcinoma and adenoma polyps as well as in model inducible colon tumorigenic cell lines. Overexpression of ectopic eIF3i in intestinal epithelial cells causes oncogenesis by directly upregulating the synthesis of cyclooxygenase-2 (COX-2) protein and activates the β-catenin/T-cell factor 4 signaling pathway that mediates the oncogenic function of eIF3i. Together, we conclude that eIF3i is a proto-oncogene that drives colon oncogenesis by translationally upregulating COX-2 and activating the β-catenin signaling pathway. These findings imply that proto-oncogenic eIFs likely exert their tumorigenic function by regulating/altering the synthesis level of downstream tumor suppressor or oncogenes.
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Affiliation(s)
- J Qi
- Department of Pharmacology and Toxicology and IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Z Dong
- Department of Pharmacology and Toxicology and IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - J Liu
- Department of Pharmacology and Toxicology and IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - J-T Zhang
- Department of Pharmacology and Toxicology and IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, USA
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Chen H, Shalom-Feuerstein R, Riley J, Zhang SD, Tucci P, Agostini M, Aberdam D, Knight RA, Genchi G, Nicotera P, Melino G, Vasa-Nicotera M. miR-7 and miR-214 are specifically expressed during neuroblastoma differentiation, cortical development and embryonic stem cells differentiation, and control neurite outgrowth in vitro. Biochem Biophys Res Commun 2010; 394:921-7. [PMID: 20230785 DOI: 10.1016/j.bbrc.2010.03.076] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Accepted: 03/10/2010] [Indexed: 10/19/2022]
Abstract
The mammalian nervous system exerts essential control on many physiological processes in the organism and is itself controlled extensively by a variety of genetic regulatory mechanisms. microRNA (miR), an abundant class of small non-coding RNA, are emerging as important post-transcriptional regulators of gene expression in the brain. Increasing evidence indicates that miR regulate both the development and function of the nervous system. Moreover, deficiency in miR function has also been implicated in a number of neurological disorders. Expression profile analysis of miR is necessary to understand their complex role in the regulation of gene expression during the development and differentiation of cells. Here we present a comparative study of miR expression profiles in neuroblastoma, in cortical development, and in neuronal differentiation of embryonic stem (ES) cells. By microarray profiling in combination with real time PCR we show that miR-7 and miR-214 are modulated in neuronal differentiation (as compared to miR-1, -16 and -133a), and control neurite outgrowth in vitro. These findings provide an important step toward further elucidation of miR function and miR-related gene regulatory networks in the mammalian central nervous system.
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Affiliation(s)
- Hailan Chen
- Medical Research Council Toxicology Unit, Hodgkin Building, Lancaster Road, PO Box 138, Leicester LE1 9HN, UK
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Brand C, Ségard P, Plouvier P, Formstecher P, Danzé PM, Lefebvre P. Selective alteration of gene expression in response to natural and synthetic retinoids. BMC Pharmacol 2002; 2:13. [PMID: 12019025 PMCID: PMC113761 DOI: 10.1186/1471-2210-2-13] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2002] [Accepted: 05/13/2002] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Retinoids are very potent inducers of cellular differentiation and apoptosis, and are efficient anti-tumoral agents. Synthetic retinoids are designed to restrict their toxicity and side effects, mostly by increasing their selectivity toward each isotype of retinoic acids receptors (RARalpha,beta, gamma and RXRalpha, beta, gamma). We however previously showed that retinoids displayed very different abilities to activate retinoid-inducible reporter genes, and that these differential properties were correlated to the ability of a given ligand to promote SRC-1 recruitment by DNA-bound RXR:RAR heterodimers. This suggested that gene-selective modulation could be achieved by structurally distinct retinoids. RESULTS Using the differential display mRNA technique, we identified several genes on the basis of their differential induction by natural or synthetic retinoids in human cervix adenocarcinoma cells. Furthermore, this differential ability to regulate promoter activities was also observed in murine P19 cells for the RARbeta2 and CRABPII gene, showing conclusively that retinoid structure has a dramatic impact on the regulation of endogenous genes. CONCLUSIONS Our findings therefore show that some degree of selective induction or repression of gene expression may be achieved when using appropriately designed ligands for retinoic acid receptors, extending the concept of selective modulators from estrogen and peroxisome proliferator activated receptors to the class of retinoid receptors.
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Affiliation(s)
- Céline Brand
- INSERM U 459 and Ligue nationale contre le Cancer, Faculté de Médecine Henri Warembourg, 1, place de Verdun, 59045 Lille cedex, France
| | - Pascaline Ségard
- INSERM U 459 and Ligue nationale contre le Cancer, Faculté de Médecine Henri Warembourg, 1, place de Verdun, 59045 Lille cedex, France
| | - Pascal Plouvier
- INSERM U 459 and Ligue nationale contre le Cancer, Faculté de Médecine Henri Warembourg, 1, place de Verdun, 59045 Lille cedex, France
| | - Pierre Formstecher
- INSERM U 459 and Ligue nationale contre le Cancer, Faculté de Médecine Henri Warembourg, 1, place de Verdun, 59045 Lille cedex, France
| | - Pierre-Marie Danzé
- INSERM U 459 and Ligue nationale contre le Cancer, Faculté de Médecine Henri Warembourg, 1, place de Verdun, 59045 Lille cedex, France
| | - Philippe Lefebvre
- INSERM U 459 and Ligue nationale contre le Cancer, Faculté de Médecine Henri Warembourg, 1, place de Verdun, 59045 Lille cedex, France
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Lovat PE, Dobson M, Malcolm AJ, Pearson AD, Redfern CP. Differential gene regulation by 9-cis and all-trans retinoic acid in neuroblastoma cells. ACTA ACUST UNITED AC 2001. [PMID: 11464866 DOI: 10.1002/1096-911x(20010101)36:1%3c135::aid-mpo1032%3e3.0.co;2-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND 9-cis retinoic acid (RA) is more effective than all-trans RA at inducing neuroblastoma differentiation in vitro, and has distinct biological properties with respect to its ability to promote apoptosis in N-type neuroblastoma cells. The cellular effects of 9-cis RA may, in part, result from activation of retinoid X receptor (RXR) homodimers. If this hypothesis is correct, 9-cis RA may control the expression of a different subset of retinoid-regulated genes compared to all-trans RA. PROCEDURE We have therefore used differential mRNA display to identify genes differentially expressed in neuroblastoma cells in response to all-trans and 9-cis RA. RESULTS The majority of cDNAs differentially expressed in response to all-trans or 9-cis RA matched to nonredundant Genbank sequences or EST database sequences. Differential-display profiles were similar in SH SY 5Y and SH S EP cells, clonal derivatives of the mixed neuroblastoma cell line SK N SH, although there were apparent differences between these cell lines with respect to the retinoid-regulation of specific RT-PCR cDNA fragments. CONCLUSIONS These data support the view that 9-cis and all-trans RA act via different receptor mechanisms.
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Affiliation(s)
- P E Lovat
- Department of Medicine, Medical School, University of Newcastle Upon Tyne, United Kingdom
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Affiliation(s)
- M L Privalsky
- Section of Microbiology, Division of Biological Sciences, One Shield Avenue, University of California at Davis, Davis, CA 95616, USA
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10
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Lovat PE, Dobson M, Malcolm AJ, Pearson AD, Redfern CP. Differential gene regulation by 9-cis and all-trans retinoic acid in neuroblastoma cells. MEDICAL AND PEDIATRIC ONCOLOGY 2001; 36:135-8. [PMID: 11464866 DOI: 10.1002/1096-911x(20010101)36:1<135::aid-mpo1032>3.0.co;2-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND 9-cis retinoic acid (RA) is more effective than all-trans RA at inducing neuroblastoma differentiation in vitro, and has distinct biological properties with respect to its ability to promote apoptosis in N-type neuroblastoma cells. The cellular effects of 9-cis RA may, in part, result from activation of retinoid X receptor (RXR) homodimers. If this hypothesis is correct, 9-cis RA may control the expression of a different subset of retinoid-regulated genes compared to all-trans RA. PROCEDURE We have therefore used differential mRNA display to identify genes differentially expressed in neuroblastoma cells in response to all-trans and 9-cis RA. RESULTS The majority of cDNAs differentially expressed in response to all-trans or 9-cis RA matched to nonredundant Genbank sequences or EST database sequences. Differential-display profiles were similar in SH SY 5Y and SH S EP cells, clonal derivatives of the mixed neuroblastoma cell line SK N SH, although there were apparent differences between these cell lines with respect to the retinoid-regulation of specific RT-PCR cDNA fragments. CONCLUSIONS These data support the view that 9-cis and all-trans RA act via different receptor mechanisms.
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Affiliation(s)
- P E Lovat
- Department of Medicine, Medical School, University of Newcastle Upon Tyne, United Kingdom
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Bernardini S, Melino G, Cortese C, Ballerini S, Annicchiarico-Petruzzelli M, Bernassola F, Corazzari M, Federici G. Modulation of glutathione transferase P1-1 activity by retinoic acid in neuroblastoma cells. J Cell Biochem 1999. [DOI: 10.1002/(sici)1097-4644(19991201)75:3<375::aid-jcb3>3.0.co;2-i] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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12
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Lovat PE, Annicchiarico-Petruzzelli M, Corazzari M, Dobson MG, Malcolm AJ, Pearson AD, Melino G, Redfern CP. Differential effects of retinoic acid isomers on the expression of nuclear receptor co-regulators in neuroblastoma. FEBS Lett 1999; 445:415-9. [PMID: 10094499 DOI: 10.1016/s0014-5793(99)00162-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Retinoic acid modulates growth and induces differentiation and apoptosis of neuroblastoma cells in vitro, with the all-trans and 9-cis isomers having different biological properties. Transcriptional activation in response to retinoic acid isomers is mediated by retinoic acid receptors and retinoid X receptors. The differential expression of co-activators and co-repressors which preferentially interact with retinoic acid receptors or retinoid X receptors may be a mechanism leading to different cellular responses to 9-cis and all-trans retinoic acid. To test this hypothesis, we have studied the expression of the nuclear receptor co-regulators TIF1alpha, TIF1beta, SUG1 and SMRT in the N-type and S-type neuroblastoma cell lines SH SY 5Y and SH S EP. Transcripts for all four co-regulators were expressed in these neuroblastoma cells. The expression of TIF1alpha, TIF1beta and SUG1 did not change in response to retinoic acid; however, SMRT was induced in both neuroblastoma cell lines, but particularly by all-trans retinoic acid in SH S EP cells. An additional co-activator, Trip3, was isolated by differential mRNA display and shown to be preferentially induced by 9-cis retinoic acid in SH SY 5Y and SH S EP cells. These data suggest that retinoic acid isomer-specific induction of nuclear receptor co-regulators may determine, in part, the differential biological effects of retinoic acid isomers.
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Affiliation(s)
- P E Lovat
- Department of Child Health, Medical School, University of Newcastle, Newcastle Upon Tyne, UK
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Melino G, De Laurenzi V, Catani MV, Terrinoni A, Ciani B, Candi E, Marekov L, Steinert PM. The cornified envelope: a model of cell death in the skin. Results Probl Cell Differ 1999; 24:175-212. [PMID: 9949837 DOI: 10.1007/978-3-540-69185-3_9] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- G Melino
- Department of Experimental Medicine, University of Rome Tor Vergata, Italy
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