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Mozammel N, Baghbani E, Amini M, Jodeiry Zaer S, Baghay Esfandyari Y, Tohidast M, Hosseini SS, Rahmani SA, Mokhtarzadeh A, Baradaran B. The Simultaneous Effects of miR-145-5p and hsa-let-7a-3p on Colorectal Tumorigenesis: In Vitro Evidence. Adv Pharm Bull 2024; 14:231-240. [PMID: 38585468 PMCID: PMC10997926 DOI: 10.34172/apb.2024.004] [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: 11/16/2022] [Revised: 06/09/2023] [Accepted: 07/14/2023] [Indexed: 04/09/2024] Open
Abstract
Purpose MicroRNAs (miRNAs) are a group of small regulatory non-coding RNAs, which are dysregulated through tumor progression. let-7 and MIR-145 are both tumor suppressor microRNAs that are downregulated in a wide array of cancers including colorectal cancer (CRC). Methods This study was aimed to investigate the effect of simultaneous replacement of these two tumor suppressor miRNAs on proliferation, apoptosis, and migration of CRC cells. HCT-116 with lower expression levels of hsa-let-7a-3p and MIR-145-5p was selected for functional investigations. The cells were cultured and transfected with hsa-let-7a and MIR-145, separately and in combination. Cell viability and apoptosis rates were assessed by MTT assay and flow cytometry, respectively. Cell cycle status was further evaluated using flow cytometry and qRT-PCR was employed to evaluate gene expression. Results The obtained results showed that exogenous overexpression of MIR-145 and hsa-let-7a in HCT-116 cells could cooperatively decrease CRC cell proliferation and induce sub-G1 cell cycle arrest. Moreover, hsa-let-7a and MIR-145 co-transfection significantly increased apoptosis induction compared to separate transfected cells and control through modulating the expression levels of apoptosis-related genes including Bax, Bcl-2, P53, Caspase-3, Caspase-8, and Caspase-9. Furthermore, qRT-PCR results illustrated that hsa-let-7a and MIR-145 combination more effectively downregulated MMP-9 and MMP-2 expression, as the important modulators of metastasis, compared to the controls. Conclusion Taken together, considering that exogenous overexpression of MIR-145 and hsa-let-7a showed cooperative anti-cancer effects on CRC cells, their combination may be considered as a novel therapeutic strategy for the treatment of CRC.
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Affiliation(s)
- Nazila Mozammel
- Department of Biology, Higher Education Institute of Rab‐Rashid, Tabriz, Iran
| | - Elham Baghbani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Amini
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sheyda Jodeiry Zaer
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Maryam Tohidast
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Seyed Ali Rahmani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahad Mokhtarzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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2
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Alizadeh A, Mirzaahmadi S, Asaadi Tehrani G, Jabbara N. A comparative assessment of RNF38 and P53 genes expression in the sperm samples obtained from males with normozoospermia and asthenospermia: A case-control study. Int J Reprod Biomed 2023; 20:1019-1028. [PMID: 36819206 PMCID: PMC9928977 DOI: 10.18502/ijrm.v20i12.12563] [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: 12/02/2021] [Revised: 06/07/2022] [Accepted: 10/30/2022] [Indexed: 01/11/2023] Open
Abstract
Background Infertility is considered as a common problem appears in about 10-12% of couples in their reproductive ages. Ring finger protein 38 (RNF38) gene is a ubiquitin-protein ligase that can regulate Protein 53 (P53) and affect cellular motility. Objective Considering the role of P53 on cellular motility and RNF38 on the regulation of P53, the present study aimed to assess the difference between RNF38 and P53 genes expression in normozoospermic and asthenospermic samples as a diagnostic biomarker in males. Materials and Methods The present study was conducted among 21 asthenospermicsand 63 healthy individuals. First, the real-time polymerase chain reaction technique was applied to measure the expression level of the P53 and RNF38 genes extracted from sperm samples, and the glyceraldehyde-3phosphate dehydrogenase gene was selected as the reference gene. Results An increase and a decrease occurred in the level of P53 and RNF38 genes expressions in asthenospermic and normozoospermic samples, respectively. In addition, a significant difference was observed between increasing P53 gene expression (p < 0.001), reducing RNF38 one, and decreasing sperm motility (p < 0.001) in asthenospermic cells compared to that of normozoospermic ones. Conclusion Based on the results, an increase in the expression of the P53 gene and a decrease in the expression of the RNF38 gene had a significant relationship with asthenospermia in men. Therefore, it is expected that an effective step should be adopted to diagnose the asthenospermia expression pattern by using these results.
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Affiliation(s)
- Alireza Alizadeh
- Department of Genetics, Faculty of Basic Sciences, Islamic Azad University, Zanjan Branch, Zanjan, Iran
| | - Sina Mirzaahmadi
- Department of Genetics, Faculty of Basic Sciences, Islamic Azad University, Zanjan Branch, Zanjan, Iran
| | - Golnaz Asaadi Tehrani
- Department of Genetics, Faculty of Basic Sciences, Islamic Azad University, Zanjan Branch, Zanjan, Iran
| | - Neda Jabbara
- Department of Genetics, Faculty of Basic Sciences, Islamic Azad University, Zanjan Branch, Zanjan, Iran
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3
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Jeon DY, Jeong SY, Lee JW, Kim J, Kim JH, Chu HS, Jeong WJ, Lee BJ, Ahn B, Kim J, Choi SH, Park JW. FOXO1 Is a Key Mediator of Glucocorticoid-Induced Expression of Tristetraprolin in MDA-MB-231 Breast Cancer Cells. Int J Mol Sci 2022; 23:ijms232213673. [PMID: 36430156 PMCID: PMC9693238 DOI: 10.3390/ijms232213673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/03/2022] [Accepted: 11/04/2022] [Indexed: 11/10/2022] Open
Abstract
The mRNA destabilizing factor tristetraprolin (TTP) functions as a tumor suppressor by down-regulating cancer-associated genes. TTP expression is significantly reduced in various cancers, which contributes to cancer processes. Enforced expression of TTP impairs tumorigenesis and abolishes maintenance of the malignant state, emphasizing the need to identify a TTP inducer in cancer cells. To search for novel candidate agents for inducing TTP in cancer cells, we screened a library containing 1019 natural compounds using MCF-7 breast cancer cells transfected with a reporter vector containing the TTP promoter upstream of the luciferase gene. We identified one molecule, of which the enantiomers are betamethasone 21-phosphate (BTM-21-P) and dexamethasone 21-phosphate (BTM-21-P), as a potent inducer of TTP in cancer cells. We confirmed that BTM-21-P, DXM-21-P, and dexamethasone (DXM) induced the expression of TTP in MDA-MB-231 cells in a glucocorticoid receptor (GR)-dependent manner. To identify potential pathways linking BTM-21-P and DXM-21-P to TTP induction, we performed an RNA sequencing-based transcriptome analysis of MDA-MB-231 cells at 3 h after treatment with these compounds. A heat map analysis of FPKM expression showed a similar expression pattern between cells treated with the two compounds. The KEGG pathway analysis results revealed that the upregulated DEGs were strongly associated with several pathways, including the Hippo signaling pathway, PI3K-Akt signaling pathway, FOXO signaling pathway, NF-κB signaling pathway, and p53 signaling pathway. Inhibition of the FOXO pathway using a FOXO1 inhibitor blocked the effects of BTM-21-P and DXM-21-P on the induction of TTP in MDA-MB-231 cells. We found that DXM enhanced the binding of FOXO1 to the TTP promoter in a GR-dependent manner. In conclusion, we identified a natural compound of which the enantiomers are DXM-21-P and BTM-21-P as a potent inducer of TTP in breast cancer cells. We also present new insights into the role of FOXO1 in the DXM-21-P- and BTM-21-P-induced expression of TTP in cancer cells.
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Affiliation(s)
- Do Yong Jeon
- Department of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
| | - So Yeon Jeong
- Department of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
| | - Ju Won Lee
- Department of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
| | - Jeonghwan Kim
- School of System Biomedical Science, Soongsil University, Seoul 06978, Korea
| | - Jee Hyun Kim
- RopheLBio, B102, Seoul Forest M Tower, Seoul 04778, Korea
| | - Hun Su Chu
- RopheLBio, B102, Seoul Forest M Tower, Seoul 04778, Korea
| | - Won Jin Jeong
- RopheLBio, B102, Seoul Forest M Tower, Seoul 04778, Korea
| | - Byung Ju Lee
- Department of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
| | - Byungyong Ahn
- Department of Food Science and Nutrition, University of Ulsan, Ulsan 44610, Korea
| | - Junil Kim
- School of System Biomedical Science, Soongsil University, Seoul 06978, Korea
| | - Seong Hee Choi
- RopheLBio, B102, Seoul Forest M Tower, Seoul 04778, Korea
- Correspondence: (S.H.C.); (J.W.P.)
| | - Jeong Woo Park
- Department of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
- Correspondence: (S.H.C.); (J.W.P.)
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Sobolewski C, Dubuquoy L, Legrand N. MicroRNAs, Tristetraprolin Family Members and HuR: A Complex Interplay Controlling Cancer-Related Processes. Cancers (Basel) 2022; 14:cancers14143516. [PMID: 35884580 PMCID: PMC9319505 DOI: 10.3390/cancers14143516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 12/17/2022] Open
Abstract
Simple Summary AU-rich Element Binding Proteins (AUBPs) represent important post-transcriptional regulators of gene expression by regulating mRNA decay and/or translation. Importantly, AUBPs can interfere with microRNA-dependent regulation by (i) competing with the same binding sites on mRNA targets, (ii) sequestering miRNAs, thereby preventing their binding to their specific targets or (iii) promoting miRNA-dependent regulation. These data highlight a new paradigm where both miRNA and RNA binding proteins form a complex regulatory network involved in physiological and pathological processes. However, this interplay is still poorly considered, and our current models do not integrate this level of complexity, thus potentially giving misleading interpretations regarding the role of these regulators in human cancers. This review summarizes the current knowledge regarding the crosstalks existing between HuR, tristetraprolin family members and microRNA-dependent regulation. Abstract MicroRNAs represent the most characterized post-transcriptional regulators of gene expression. Their altered expression importantly contributes to the development of a wide range of metabolic and inflammatory diseases but also cancers. Accordingly, a myriad of studies has suggested novel therapeutic approaches aiming at inhibiting or restoring the expression of miRNAs in human diseases. However, the influence of other trans-acting factors, such as long-noncoding RNAs or RNA-Binding-Proteins, which compete, interfere, or cooperate with miRNAs-dependent functions, indicate that this regulatory mechanism is much more complex than initially thought, thus questioning the current models considering individuals regulators. In this review, we discuss the interplay existing between miRNAs and the AU-Rich Element Binding Proteins (AUBPs), HuR and tristetraprolin family members (TTP, BRF1 and BRF2), which importantly control the fate of mRNA and whose alterations have also been associated with the development of a wide range of chronic disorders and cancers. Deciphering the interplay between these proteins and miRNAs represents an important challenge to fully characterize the post-transcriptional regulation of pro-tumorigenic processes and design new and efficient therapeutic approaches.
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5
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LIN28 Family in Testis: Control of Cell Renewal, Maturation, Fertility and Aging. Int J Mol Sci 2022; 23:ijms23137245. [PMID: 35806250 PMCID: PMC9266904 DOI: 10.3390/ijms23137245] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/20/2022] [Accepted: 06/25/2022] [Indexed: 12/12/2022] Open
Abstract
Male reproductive development starts early in the embryogenesis with somatic and germ cell differentiation in the testis. The LIN28 family of RNA-binding proteins promoting pluripotency has two members—LIN28A and LIN28B. Their function in the testis has been investigated but many questions about their exact role based on the expression patterns remain unclear. LIN28 expression is detected in the gonocytes and the migrating, mitotically active germ cells of the fetal testis. Postnatal expression of LIN28 A and B showed differential expression, with LIN28A expressed in the undifferentiated spermatogonia and LIN28B in the elongating spermatids and Leydig cells. LIN28 interferes with many signaling pathways, leading to cell proliferation, and it is involved in important testicular physiological processes, such as cell renewal, maturation, fertility, and aging. In addition, aberrant LIN28 expression is associated with testicular cancer and testicular disorders, such as hypogonadotropic hypogonadism and Klinefelter’s syndrome. This comprehensive review encompasses current knowledge of the function of LIN28 paralogs in testis and other tissues and cells because many studies suggest LIN28AB as a promising target for developing novel therapeutic agents.
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Busbee PB, Bam M, Yang X, Abdulla OA, Zhou J, Ginsberg JPJ, Aiello AE, Uddin M, Nagarkatti M, Nagarkatti PS. Dysregulated TP53 Among PTSD Patients Leads to Downregulation of miRNA let-7a and Promotes an Inflammatory Th17 Phenotype. Front Immunol 2022; 12:815840. [PMID: 35058939 PMCID: PMC8763839 DOI: 10.3389/fimmu.2021.815840] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 12/15/2021] [Indexed: 12/31/2022] Open
Abstract
Post-traumatic stress disorder (PTSD) is a psychiatric disorder and patients diagnosed with PTSD often express other comorbid health issues, particularly autoimmune and inflammatory disorders. Our previous reports investigating peripheral blood mononuclear cells (PBMCs) from PTSD patients showed that these patients exhibit an increased inflammatory T helper (Th) cell phenotype and widespread downregulation of microRNAs (miRNAs), key molecules involved in post-transcriptional gene regulation. A combination of analyzing prior datasets on gene and miRNA expression of PBMCs from PTSD and Control samples, as well as experiments using primary PBMCs collected from human PTSD and Controls blood, was used to evaluate TP53 expression, DNA methylation, and miRNA modulation on Th17 development. In the current report, we note several downregulated miRNAs were linked to tumor protein 53 (TP53), also known as p53. Expression data from PBMCs revealed that compared to Controls, PTSD patients exhibited decreased TP53 which correlated with an increased inflammatory Th17 phenotype. Decreased expression of TP53 in the PTSD population was shown to be associated with an increase in DNA methylation in the TP53 promotor region. Lastly, the most significantly downregulated TP53-associated miRNA, let-7a, was shown to negatively regulate Th17 T cells. Let-7a modulation in activated CD4+ T cells was shown to influence Th17 development and function, via alterations in IL-6 and IL-17 production, respectively. Collectively, these studies reveal that PTSD patients could be susceptible to inflammation by epigenetic dysregulation of TP53, which alters the miRNA profile to favor a proinflammatory Th17 phenotype.
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Affiliation(s)
- Philip B Busbee
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Marpe Bam
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Xiaoming Yang
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Osama A Abdulla
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Juhua Zhou
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Jay Paul Jack Ginsberg
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States.,Departments of Psychophysiology, Clinical Psychology, and Research Office, Saybrook University, Pasadena, CA, United States
| | - Allison E Aiello
- Department of Epidemiology, University of North Carolina (UNC) Gillings School of Global Public Health, University of North Carolina, Mcgavran-Greenberg Hall, Chapel Hill, NC, United States
| | - Monica Uddin
- Genomics Program, University of South Florida College of Public Health, Tampa, FL, United States
| | - Mitzi Nagarkatti
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Prakash S Nagarkatti
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
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7
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Crudele F, Bianchi N, Astolfi A, Grassilli S, Brugnoli F, Terrazzan A, Bertagnolo V, Negrini M, Frassoldati A, Volinia S. The Molecular Networks of microRNAs and Their Targets in the Drug Resistance of Colon Carcinoma. Cancers (Basel) 2021; 13:cancers13174355. [PMID: 34503164 PMCID: PMC8431668 DOI: 10.3390/cancers13174355] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/19/2021] [Accepted: 08/22/2021] [Indexed: 12/25/2022] Open
Abstract
Simple Summary We systematically reviewed the recent scientific publications describing the role of microRNAs in the regulation of drug resistance in colon cancer. To clarify the intricate web of resulting genetic and biochemical interactions, we used a machine learning approach aimed at creating: (i) networks of validated miRNA/target interactions involved in drug resistances and (ii) drug-centric networks, from which we identified the major clusters of proteins affected by drugs used in the treatment of colon cancer. Finally, to facilitate a high-level interpretation of these molecular interactions, we determined the cellular pathways related with drug resistance and regulated by the miRNAs in colon cancer. Abstract Drug resistance is one of the major forces driving a poor prognosis during the treatment and progression of human colon carcinomas. The molecular mechanisms that regulate the diverse processes underlying drug resistance are still under debate. MicroRNAs (miRNAs) are a subgroup of non-coding RNAs increasingly found to be associated with the regulation of tumorigenesis and drug resistance. We performed a systematic review of the articles concerning miRNAs and drug resistance in human colon cancer published from 2013 onwards in journals with an impact factor of 5 or higher. First, we built a network with the most studied miRNAs and targets (as nodes) while the drug resistance/s are indicated by the connections (edges); then, we discussed the most relevant miRNA/targets interactions regulated by drugs according to the network topology and statistics. Finally, we considered the drugs as nodes in the network, to allow an alternative point of view that could flow through the treatment options and the associated molecular pathways. A small number of microRNAs and proteins appeared as critically involved in the most common drugs used for the treatment of patients with colon cancer. In particular, the family of miR-200, miR34a, miR-155 and miR-17 appear as the most relevant microRNAs. Thus, regulating these miRNAs could be useful for interfering with some drug resistance mechanisms in colorectal carcinoma.
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Affiliation(s)
- Francesca Crudele
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
- Laboratory for Advanced Therapy Technologies (LTTA), Via Fossato di Mortara 70, 44121 Ferrara, Italy
| | - Nicoletta Bianchi
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
| | - Annalisa Astolfi
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
| | - Silvia Grassilli
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
- Laboratory for Advanced Therapy Technologies (LTTA), Via Fossato di Mortara 70, 44121 Ferrara, Italy
| | - Federica Brugnoli
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
| | - Anna Terrazzan
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
| | - Valeria Bertagnolo
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
| | - Massimo Negrini
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
- Laboratory for Advanced Therapy Technologies (LTTA), Via Fossato di Mortara 70, 44121 Ferrara, Italy
| | - Antonio Frassoldati
- Department of Oncology, Azienda Ospedaliero-Universitaria St. Anna di Ferrara, Via A. Moro 8, 44124 Ferrara, Italy;
| | - Stefano Volinia
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
- Laboratory for Advanced Therapy Technologies (LTTA), Via Fossato di Mortara 70, 44121 Ferrara, Italy
- Correspondence:
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8
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Chen W, Chen M, Zhao Z, Weng Q, Song J, Fang S, Wu X, Wang H, Zhang D, Yang W, Wang Z, Xu M, Ji J. ZFP36 Binds With PRC1 to Inhibit Tumor Growth and Increase 5-Fu Chemosensitivity of Hepatocellular Carcinoma. Front Mol Biosci 2020; 7:126. [PMID: 32766276 PMCID: PMC7381195 DOI: 10.3389/fmolb.2020.00126] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 06/02/2020] [Indexed: 01/10/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the fifth common cause of tumor-related death worldwide. ZFP36, a RNA-binding protein, decreases in many cancers and its role in HCC remains unclear. This study aimed to investigate the underlying mechanisms by which ZFP36 inhibited HCC progression and increased fluorouracil (5-Fu) sensitivity. We found that ZFP36 was downregulated and PRC1 was upregulated in HCC tissues compared with adjacent non-tumor tissues. In vitro investigation presented that ZFP36 acted as a tumor suppressor, while overexpression of PRC1 increased cell proliferation, colony formation and invasion. Further investigations demonstrated that overexpression of ZFP36 inhibited tumor growth and promoted 5-Fu sensitivity in xenograft tumor mice model, which could be reversed when PRC1 overexpressed simultaneously. Luciferase reporter assays and Ribonucleoprotein immunoprecipitation analysis indicated that ZFP36 could bind to adenylate uridylate-rich elements located in PRC1 mRNA 3′UTR to downregulate PRC1 expression. Taken together, our findings identified that ZFP36 regulated PRC1 to exert anti-tumor effect, which suggested a potential therapeutic strategy for treating HCC by exploiting ZFP36/PRC1 axis.
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Affiliation(s)
- Weiqian Chen
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Minjiang Chen
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Zhongwei Zhao
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Qiaoyou Weng
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Jingjing Song
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Shiji Fang
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Xulu Wu
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Hailin Wang
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Dengke Zhang
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Weibin Yang
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Zufei Wang
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Min Xu
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Jiansong Ji
- Zhejiang Provincial Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China.,Department of Radiology, Lishui Hospital of Zhejiang University, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, China
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9
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The Tristetraprolin Family of RNA-Binding Proteins in Cancer: Progress and Future Prospects. Cancers (Basel) 2020; 12:cancers12061539. [PMID: 32545247 PMCID: PMC7352335 DOI: 10.3390/cancers12061539] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/07/2020] [Accepted: 06/09/2020] [Indexed: 12/12/2022] Open
Abstract
Post-transcriptional regulation of gene expression plays a key role in cellular proliferation, differentiation, migration, and apoptosis. Increasing evidence suggests dysregulated post-transcriptional gene expression as an important mechanism in the pathogenesis of cancer. The tristetraprolin family of RNA-binding proteins (RBPs), which include Zinc Finger Protein 36 (ZFP36; commonly referred to as tristetraprolin (TTP)), Zinc Finger Protein 36 like 1 (ZFP36L1), and Zinc Finger Protein 36 like 2 (ZFP36L2), play key roles in the post-transcriptional regulation of gene expression. Mechanistically, these proteins function by binding to the AU-rich elements within the 3′-untranslated regions of their target mRNAs and, in turn, increasing mRNA turnover. The TTP family RBPs are emerging as key regulators of multiple biological processes relevant to cancer and are aberrantly expressed in numerous human cancers. The TTP family RBPs have tumor-suppressive properties and are also associated with cancer prognosis, metastasis, and resistance to chemotherapy. Herein, we summarize the various hallmark molecular traits of cancers that are reported to be regulated by the TTP family RBPs. We emphasize the role of the TTP family RBPs in the regulation of trait-associated mRNA targets in relevant cancer types/cell lines. Finally, we highlight the potential of the TTP family RBPs as prognostic indicators and discuss the possibility of targeting these TTP family RBPs for therapeutic benefits.
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10
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Posttranscriptional control of the replication stress response via TTP-mediated Claspin mRNA stabilization. Oncogene 2020; 39:3245-3257. [PMID: 32086441 DOI: 10.1038/s41388-020-1220-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 02/09/2020] [Accepted: 02/11/2020] [Indexed: 11/08/2022]
Abstract
ATR and CHK1 play key roles in the protection and recovery of the stalled replication forks. Claspin, an adaptor for CHK1 activation, is essential for DNA damage signaling and efficient replication fork progression. Here, we show that tristetraprolin (TTP), an mRNA-binding protein, can modulate the replication stress response via stabilization of Claspin mRNA. TTP depletion compromised specifically in the phosphorylation of CHK1, but not p53 or H2AX among other ATR substrates, and produced CHK1-defective replication phenotypes including accumulation of stalled replication forks. Importantly, the expression of siRNA-resistant TTP in TTP-deficient cells restored CHK1 phosphorylation and reduced the number of stalled replication forks as close to the control cells. Besides, we found that TTP was required for efficient replication fork progression even in the absence of exogenous DNA damage in a Claspin-dependent manner. Mechanistically, TTP was able to bind to the 3'-untranslated region of Claspin mRNA to increase the stability of Claspin mRNA which eventually contributed to the subsequent ATR-CHK1 activation upon DNA damage. Taken together, our results revealed an intimate link between TTP-dependent Claspin mRNA stability and ATR-CHK1-dependent replication fork stability to maintain replication fork integrity and chromosomal stability.
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11
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Kim DJ, Jang JH, Ham SY, Choi SH, Park SS, Jeong SY, Kim BC, Jeon DY, Lee BJ, Ko BK, Park JW, Cho WJ. Doxorubicin inhibits PD-L1 expression by enhancing TTP-mediated decay of PD-L1 mRNA in cancer cells. Biochem Biophys Res Commun 2019; 522:402-407. [PMID: 31767150 DOI: 10.1016/j.bbrc.2019.11.106] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 11/16/2019] [Accepted: 11/16/2019] [Indexed: 01/24/2023]
Abstract
Recent research revealed that doxorubicin (DOX) decreased expression of programmed death-ligand 1 (PD-L1) in cancer cells. However, the detailed mechanisms underlying this effect are not well established. Here, we demonstrate that doxorubicin down-regulates PD-L1 expression through induction of AU-rich element (ARE) binding protein tristetraprolin (TTP) in cancer cells. PD-L1 mRNA contain three AREs within its 3'UTR. Doxorubicin induced expression of TTP, increased TTP binding to the 3rd ARE of the PD-L1 3'UTR, and increased decay of PD-L1 mRNA. Inhibition of TTP abrogates the inhibitory effect of doxorubicin on PD-L1 expression. Our data suggest that TTP plays a key role in doxorubicin-mediated down-regulation of PD-L1 by enhancing degradation of PD-L1 mRNA in cancer cells.
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Affiliation(s)
- Dong Jun Kim
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, South Korea
| | - Ji Hun Jang
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, South Korea
| | - Soo-Youn Ham
- Department of Radiology, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Seong Hee Choi
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, South Korea
| | - Sung Soon Park
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, South Korea
| | - So Yeon Jeong
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, South Korea
| | - Beom Chang Kim
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, South Korea
| | - Do Yong Jeon
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, South Korea
| | - Byung Ju Lee
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, South Korea
| | - Byung Kyun Ko
- Department of Surgery Ulsan University Hospital, University of Ulsan, Ulsan, South Korea.
| | - Jeong Woo Park
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, South Korea.
| | - Wha Ja Cho
- Meta-Inflammation Research Center, University of Ulsan, Ulsan, 680-749, South Korea.
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12
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The mRNA-binding Protein TTP/ZFP36 in Hepatocarcinogenesis and Hepatocellular Carcinoma. Cancers (Basel) 2019; 11:cancers11111754. [PMID: 31717307 PMCID: PMC6896064 DOI: 10.3390/cancers11111754] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 11/04/2019] [Accepted: 11/05/2019] [Indexed: 02/07/2023] Open
Abstract
Hepatic lipid deposition and inflammation represent risk factors for hepatocellular carcinoma (HCC). The mRNA-binding protein tristetraprolin (TTP, gene name ZFP36) has been suggested as a tumor suppressor in several malignancies, but it increases insulin resistance. The aim of this study was to elucidate the role of TTP in hepatocarcinogenesis and HCC progression. Employing liver-specific TTP-knockout (lsTtp-KO) mice in the diethylnitrosamine (DEN) hepatocarcinogenesis model, we observed a significantly reduced tumor burden compared to wild-type animals. Upon short-term DEN treatment, modelling early inflammatory processes in hepatocarcinogenesis, lsTtp-KO mice exhibited a reduced monocyte/macrophage ratio as compared to wild-type mice. While short-term DEN strongly induced an abundance of saturated and poly-unsaturated hepatic fatty acids, lsTtp-KO mice did not show these changes. These findings suggested anti-carcinogenic actions of TTP deletion due to effects on inflammation and metabolism. Interestingly, though, investigating effects of TTP on different hallmarks of cancer suggested tumor-suppressing actions: TTP inhibited proliferation, attenuated migration, and slightly increased chemosensitivity. In line with a tumor-suppressing activity, we observed a reduced expression of several oncogenes in TTP-overexpressing cells. Accordingly, ZFP36 expression was downregulated in tumor tissues in three large human data sets. Taken together, this study suggests that hepatocytic TTP promotes hepatocarcinogenesis, while it shows tumor-suppressive actions during hepatic tumor progression.
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13
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Chirshev E, Oberg KC, Ioffe YJ, Unternaehrer JJ. Let-7 as biomarker, prognostic indicator, and therapy for precision medicine in cancer. Clin Transl Med 2019; 8:24. [PMID: 31468250 PMCID: PMC6715759 DOI: 10.1186/s40169-019-0240-y] [Citation(s) in RCA: 154] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 08/16/2019] [Indexed: 12/23/2022] Open
Abstract
Abnormal regulation and expression of microRNAs (miRNAs) has been documented in various diseases including cancer. The miRNA let-7 (MIRLET7) family controls developmental timing and differentiation. Let-7 loss contributes to carcinogenesis via an increase in its target oncogenes and stemness factors. Let-7 targets include genes regulating the cell cycle, cell signaling, and maintenance of differentiation. It is categorized as a tumor suppressor because it reduces cancer aggressiveness, chemoresistance, and radioresistance. However, in rare situations let-7 acts as an oncogene, increasing cancer migration, invasion, chemoresistance, and expression of genes associated with progression and metastasis. Here, we review let-7 function as tumor suppressor and oncogene, considering let-7 as a potential diagnostic and prognostic marker, and a therapeutic target for cancer treatment. We explain the complex regulation and function of different let-7 family members, pointing to abnormal processes involved in carcinogenesis. Let-7 is a promising option to complement conventional cancer therapy, but requires a tumor specific delivery method to avoid toxicity. While let-7 therapy is not yet established, we make the case that assessing its tumor presence is crucial when choosing therapy. Clinical data demonstrate that let-7 can be used as a biomarker for rational precision medicine decisions, resulting in improved patient survival.
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Affiliation(s)
- Evgeny Chirshev
- Division of Anatomy, Department of Basic Sciences, Loma Linda University, Loma Linda, CA, USA
| | - Kerby C Oberg
- Division of Anatomy and Pediatric Pathology, Loma Linda University, Loma Linda, CA, USA
| | - Yevgeniya J Ioffe
- Gynecology and Obstetrics, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - Juli J Unternaehrer
- Division of Biochemistry, Department of Basic Sciences, Loma Linda University, 11085 Campus Street, Mortensen Hall 219, Loma Linda, CA, 92354, USA.
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14
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Zhou TE, Zhu T, Rivera JC, Omri S, Tahiri H, Lahaie I, Rouget R, Wirth M, Nattel S, Lodygensky G, Ferbeyre G, Nezhady M, Desjarlais M, Hamel P, Chemtob S. The Inability of the Choroid to Revascularize in Oxygen-Induced Retinopathy Results from Increased p53/miR-Let-7b Activity. THE AMERICAN JOURNAL OF PATHOLOGY 2019; 189:2340-2356. [PMID: 31430465 DOI: 10.1016/j.ajpath.2019.07.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 07/13/2019] [Accepted: 07/26/2019] [Indexed: 12/18/2022]
Abstract
Retinopathy of prematurity (ROP) is characterized by an initial retinal avascularization, followed by pathologic neovascularization. Recently, choroidal thinning has also been detected in children formerly diagnosed with ROP; a similar sustained choroidal thinning is observed in ROP models. But the mechanism underlying the lack of choroidal revascularization remains unclear and was investigated in an oxygen-induced retinopathy (OIR) model. In OIR, evidence of senescence was detected, preceded by oxidative stress in the choroid and the retinal pigment epithelium. This was associated with a global reduction of proangiogenic factors, including insulin-like growth factor 1 receptor (Igf1R). Coincidentally, tumor suppressor p53 was highly expressed in the OIR retinae. Curtailing p53 activity resulted in reversal of senescence, normalization of Igf1r expression, and preservation of choroidal integrity. OIR-induced down-regulation of Igf1r was mediated at least partly by miR-let-7b as i) let-7b expression was augmented throughout and beyond the period of oxygen exposure, ii) let-7b directly targeted Igf1r mRNA, and iii) p53 knock-down blunted let-7b expression, restored Igf1r expression, and elicited choroidal revascularization. Finally, restoration of Igf1r expression rescued choroid thickness. Altogether, this study uncovers a significant mechanism for defective choroidal revascularization in OIR, revealing a new role for p53/let-7b/IGF-1R axis in the retina. Future investigations on this (and connected) pathway could further our understanding of other degenerative choroidopathies, such as geographic atrophy.
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Affiliation(s)
- Tianwei E Zhou
- Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec, Canada; Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, Montréal, Québec, Canada.
| | - Tang Zhu
- Department of Pharmacology, Centre Hospitalier Universitaire Sainte-Justine Hospital, Université de Montréal, Montréal, Québec, Canada
| | - José C Rivera
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, Montréal, Québec, Canada; Department of Pharmacology, Centre Hospitalier Universitaire Sainte-Justine Hospital, Université de Montréal, Montréal, Québec, Canada; Department of Ophthalmology, Centre Hospitalier Universitaire Sainte-Justine Hospital, Université de Montréal, Montréal, Québec, Canada
| | - Samy Omri
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, Montréal, Québec, Canada
| | - Houda Tahiri
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, Montréal, Québec, Canada
| | - Isabelle Lahaie
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, Montréal, Québec, Canada
| | - Raphaël Rouget
- Department of Pharmacology, Centre Hospitalier Universitaire Sainte-Justine Hospital, Université de Montréal, Montréal, Québec, Canada
| | - Maëlle Wirth
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, Montréal, Québec, Canada
| | - Stanley Nattel
- Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec, Canada; Department of Medicine, Montreal Heart Institute, Université de Montréal, Montréal, Québec, Canada
| | - Gregory Lodygensky
- Department of Pediatrics, Sainte-Justine University Hospital Centre, Université de Montréal, Montréal, Québec, Canada
| | - Gerardo Ferbeyre
- Department of Biochemistry, Université de Montréal, Montréal, Québec, Canada
| | - Mohammad Nezhady
- Department of Pathology and Cell Biology, University of Montréal, Montréal, Québec, Canada
| | - Michel Desjarlais
- Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec, Canada; Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, Montréal, Québec, Canada
| | - Patrick Hamel
- Department of Ophthalmology, Centre Hospitalier Universitaire Sainte-Justine Hospital, Université de Montréal, Montréal, Québec, Canada
| | - Sylvain Chemtob
- Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec, Canada; Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, Montréal, Québec, Canada; Department of Pharmacology, Centre Hospitalier Universitaire Sainte-Justine Hospital, Université de Montréal, Montréal, Québec, Canada; Department of Ophthalmology, Centre Hospitalier Universitaire Sainte-Justine Hospital, Université de Montréal, Montréal, Québec, Canada; Department of Pediatrics, Sainte-Justine University Hospital Centre, Université de Montréal, Montréal, Québec, Canada.
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15
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MicroRNAs as Potential Biomarkers for Chemoresistance in Adenocarcinomas of the Esophagogastric Junction. JOURNAL OF ONCOLOGY 2019; 2019:4903152. [PMID: 31467538 PMCID: PMC6701342 DOI: 10.1155/2019/4903152] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 07/15/2019] [Indexed: 12/11/2022]
Abstract
Concerning adenocarcinomas of the esophagogastric junction, neoadjuvant chemotherapy is regularly implemented, but patients' response varies greatly, with some cases showing no therapeutic effect, being deemed as chemoresistant. Small, noncoding RNAs (miRNAs) have evolved as key players in biological processes, including malignant diseases, often promoting tumor growth and expansion. In addition, specific miRNAs have been implicated in the development of chemoresistance through evasion of apoptosis, cell cycle alterations, and drug target modification. We performed a retrospective study of 33 patients receiving neoadjuvant chemotherapy by measuring their miRNA expression profiles. Histologic tumor regression was evaluated using resection specimens, while miRNA profiles were prepared using preoperative biopsies without prior therapy. A preselected panel of 96 miRNAs, known to be of importance in various malignancies, was used to test for significant differences between responsive (chemosensitive) and nonresponsive (chemoresistant) cases. The cohort consisted of 12 nonresponsive and 21 responsive cases with the following 4 miRNAs differentially expressed between both the groups: hsa-let-7f-5p, hsa-miRNA-221-3p, hsa-miRNA-31-5p, and hsa-miRNA-191-5p. The former 3 showed upregulation in chemoresistant cases, while the latter showed upregulation in chemosensitive cases. In addition, significant correlation between high expression of hsa-miRNA-194-5p and prolonged survival could be demonstrated (p value <0.0001). In conclusion, we identified a panel of 3 miRNAs predicting chemoresistance and a single miRNA contributing to chemosensitivity. These miRNAs might function as prognostic biomarkers and enable clinicians to better predict the effect of one or more reliably select patients benefitting from (neoadjuvant) chemotherapy.
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16
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Sin-Chan P, Mumal I, Suwal T, Ho B, Fan X, Singh I, Du Y, Lu M, Patel N, Torchia J, Popovski D, Fouladi M, Guilhamon P, Hansford JR, Leary S, Hoffman LM, Mulcahy Levy JM, Lassaletta A, Solano-Paez P, Rivas E, Reddy A, Gillespie GY, Gupta N, Van Meter TE, Nakamura H, Wong TT, Ra YS, Kim SK, Massimi L, Grundy RG, Fangusaro J, Johnston D, Chan J, Lafay-Cousin L, Hwang EI, Wang Y, Catchpoole D, Michaud J, Ellezam B, Ramanujachar R, Lindsay H, Taylor MD, Hawkins CE, Bouffet E, Jabado N, Singh SK, Kleinman CL, Barsyte-Lovejoy D, Li XN, Dirks PB, Lin CY, Mack SC, Rich JN, Huang A. A C19MC-LIN28A-MYCN Oncogenic Circuit Driven by Hijacked Super-enhancers Is a Distinct Therapeutic Vulnerability in ETMRs: A Lethal Brain Tumor. Cancer Cell 2019; 36:51-67.e7. [PMID: 31287992 DOI: 10.1016/j.ccell.2019.06.002] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 04/26/2019] [Accepted: 06/03/2019] [Indexed: 12/26/2022]
Abstract
Embryonal tumors with multilayered rosettes (ETMRs) are highly lethal infant brain cancers with characteristic amplification of Chr19q13.41 miRNA cluster (C19MC) and enrichment of pluripotency factor LIN28A. Here we investigated C19MC oncogenic mechanisms and discovered a C19MC-LIN28A-MYCN circuit fueled by multiple complex regulatory loops including an MYCN core transcriptional network and super-enhancers resulting from long-range MYCN DNA interactions and C19MC gene fusions. Our data show that this powerful oncogenic circuit, which entraps an early neural lineage network, is potently abrogated by bromodomain inhibitor JQ1, leading to ETMR cell death.
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MESH Headings
- Biomarkers, Tumor
- Brain Neoplasms/diagnosis
- Brain Neoplasms/etiology
- Brain Neoplasms/therapy
- Cell Cycle/genetics
- Cell Transformation, Neoplastic/drug effects
- Cell Transformation, Neoplastic/genetics
- Chromosomes, Human, Pair 19
- Chromosomes, Human, Pair 2
- DNA Copy Number Variations
- Enhancer Elements, Genetic
- Epigenesis, Genetic
- Gene Expression Regulation
- Gene Regulatory Networks
- Genetic Association Studies
- Genetic Predisposition to Disease
- Humans
- MicroRNAs/genetics
- Models, Biological
- Multigene Family
- N-Myc Proto-Oncogene Protein/genetics
- Neoplasms, Germ Cell and Embryonal/diagnosis
- Neoplasms, Germ Cell and Embryonal/etiology
- Neoplasms, Germ Cell and Embryonal/therapy
- Oncogenes
- RNA-Binding Proteins/genetics
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Affiliation(s)
- Patrick Sin-Chan
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, ON M5G0A4, Canada
| | - Iqra Mumal
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, ON M5G0A4, Canada; Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S1A8, Canada
| | - Tannu Suwal
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, ON M5G0A4, Canada; Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S1A8, Canada
| | - Ben Ho
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, ON M5G0A4, Canada
| | - Xiaolian Fan
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, ON M5G0A4, Canada
| | - Irtisha Singh
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Yuchen Du
- Department of Pediatrics, Division of Hematology and Oncology, Baylor College of Medicine, Texas Children's Hospital, Houston, TX 77030, USA
| | - Mei Lu
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, ON M5G0A4, Canada
| | - Neilket Patel
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, ON M5G0A4, Canada
| | - Jonathon Torchia
- Princess Margaret Cancer Center-OICR Translational Genomics Laboratory, Ontario Institute for Cancer Research, Toronto, ON M5G0A3, Canada
| | - Dean Popovski
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, ON M5G0A4, Canada
| | - Maryam Fouladi
- Division of Oncology, Department of Cancer and Blood Diseases, Cincinnati Children's Hospital, Cincinnati, OH 45229, USA
| | - Paul Guilhamon
- Developmental and Stem Cell Biology Program and Arthur and Sonia Labatt Brain Tumor Research Centre, The Hospital for Sick Children, Toronto, ON M5G0A4, Canada
| | - Jordan R Hansford
- Children's Cancer Centre, Royal Children's Hospital, Murdoch Children's Research Institute, Department of Pediatrics, University of Melbourne, Melbourne, VIC 3052, Australia
| | - Sarah Leary
- Department of Hematology-Oncology, Seattle Children's Hospital, Seattle, WA 98105, USA
| | - Lindsey M Hoffman
- Department of Pediatrics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Jean M Mulcahy Levy
- Department of Pediatrics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Alvaro Lassaletta
- Pediatric Hematology and Oncology Department, Hospital Infantil Universitario Niño Jesús, Madrid 28009, Spain
| | - Palma Solano-Paez
- Department of Pediatric Oncology, Hospital Infantil Virgen del Rocio, Seville 41013, Spain
| | - Eloy Rivas
- Department of Pathology, Neuropathology Division, Hospital Universitario Virgen del Rocio, Seville 41013, Spain
| | - Alyssa Reddy
- University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - G Yancey Gillespie
- Department of Neurosurgery, University of Alabama at Birmingham, Birmingham AL 35294, USA
| | - Nalin Gupta
- Department of Neurological Surgery, University of California, San Francisco, CA 94143-0112, USA
| | - Timothy E Van Meter
- Department of Pediatrics, Virginia Commonwealth University, Richmond, VA 23298-0631, USA
| | - Hideo Nakamura
- Department of Neurosurgery, Kurume University, Fukuoka 830-0011, Japan
| | - Tai-Tong Wong
- Pediatric Brain Tumor Program, Taipei Cancer Center, Taipei Medical University, Taipei 11031, Taiwan
| | - Young-Shin Ra
- Department of Neurosurgery, Asan Medical Center, Seoul 138-736, Korea
| | - Seung-Ki Kim
- Division of Pediatric Neurosurgery, Seoul National University Children's Hospital, Seoul 03080, Korea
| | - Luca Massimi
- Department of Neurosurgery, Fondazione Policlinico A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome 00168, Italy
| | - Richard G Grundy
- Children's Brain Tumor Research Centre, Queen's Medical Centre University of Nottingham, Nottingham NG72UH, UK
| | - Jason Fangusaro
- Department of Pediatric Hematology and Oncology at Children's Healthcare of Atlanta and the Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Donna Johnston
- Division of Hematology/Oncology, Children's Hospital of Eastern Ontario, Ottawa, ON K1H8L1, Canada
| | - Jennifer Chan
- Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB T2N1N4, Canada
| | - Lucie Lafay-Cousin
- Department of Pediatric Oncology, Alberta Children's Hospital, Calgary, AB T3B6A8, Canada
| | - Eugene I Hwang
- Center for Cancer and Blood Disorders, Children's National Medical Center, Washington, DC 20010, USA
| | - Yin Wang
- Department of Neuropathology Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Daniel Catchpoole
- The Tumor Bank, Children's Cancer Research Unit, Kids Research, the Children's Hospital at Westmead, Westmead, NSW 2145, Australia
| | - Jean Michaud
- Department of Pathology and Laboratory Medicine, University of Ottawa, Ottawa, ON K1H8M5, Canada
| | - Benjamin Ellezam
- Department of Pathology, CHU Sainte-Justine Research Center, Université de Montréal, Montréal, QC H3T1C5, Canada
| | - Ramya Ramanujachar
- Paediatric Haematology and Oncology, Southampton Children's Hospital, Southampton SO166YD, UK
| | - Holly Lindsay
- Department of Pediatrics, Division of Hematology and Oncology, Baylor College of Medicine, Texas Children's Hospital, Houston, TX 77030, USA
| | - Michael D Taylor
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S1A8, Canada; Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Neurosurgery, Hospital for Sick Children, Toronto, ON M5G0A4, Canada
| | - Cynthia E Hawkins
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S1A8, Canada; Department of Pathology, The Hospital for Sick Children, Toronto, ON M5G1X8, Canada
| | - Eric Bouffet
- Division of Hematology-Oncology, The Hospital for Sick Children, Department of Pediatrics, University of Toronto, Toronto, ON M5G0A4, Canada
| | - Nada Jabado
- Departments of Pediatrics and Human Genetics, McGill University, Montréal, QC H3A0C7, Canada
| | - Sheila K Singh
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON L8S4K1, Canada
| | - Claudia L Kleinman
- Departments of Pediatrics and Human Genetics, McGill University, Montréal, QC H3A0C7, Canada
| | | | - Xiao-Nan Li
- Department of Pediatrics, Division of Hematology and Oncology, Baylor College of Medicine, Texas Children's Hospital, Houston, TX 77030, USA; Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Peter B Dirks
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S1A8, Canada; Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Neurosurgery, Hospital for Sick Children, Toronto, ON M5G0A4, Canada
| | - Charles Y Lin
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Stephen C Mack
- Department of Pediatrics, Division of Hematology and Oncology, Baylor College of Medicine, Texas Children's Hospital, Houston, TX 77030, USA
| | - Jeremy N Rich
- Department of Medicine, Division of Regenerative Medicine, University of California, San Diego, CA 92093, USA
| | - Annie Huang
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, ON M5G0A4, Canada; Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S1A8, Canada; Division of Hematology-Oncology, The Hospital for Sick Children, Department of Pediatrics, University of Toronto, Toronto, ON M5G0A4, Canada; Department of Medical Biophysics, Faculty of Medicine, University of Toronto, Toronto, ON M5G1L7, Canada.
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17
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Hay J, Gilroy K, Huser C, Kilbey A, Mcdonald A, MacCallum A, Holroyd A, Cameron E, Neil JC. Collaboration of MYC and RUNX2 in lymphoma simulates T-cell receptor signaling and attenuates p53 pathway activity. J Cell Biochem 2019; 120:18332-18345. [PMID: 31257681 PMCID: PMC6772115 DOI: 10.1002/jcb.29143] [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: 02/12/2019] [Accepted: 05/14/2019] [Indexed: 11/12/2022]
Abstract
MYC and RUNX oncogenes each trigger p53‐mediated failsafe responses when overexpressed in vitro and collaborate with p53 deficiency in vivo. However, together they drive rapid onset lymphoma without mutational loss of p53. This phenomenon was investigated further by transcriptomic analysis of premalignant thymus from RUNX2/MYC transgenic mice. The distinctive contributions of MYC and RUNX to transcriptional control were illustrated by differential enrichment of canonical binding sites and gene ontology analyses. Pathway analysis revealed signatures of MYC, CD3, and CD28 regulation indicative of activation and proliferation, but also strong inhibition of cell death pathways. In silico analysis of discordantly expressed genes revealed Tnfsrf8/CD30, Cish, and Il13 among relevant targets for sustained proliferation and survival. Although TP53 mRNA and protein levels were upregulated, its downstream targets in growth suppression and apoptosis were largely unperturbed. Analysis of genes encoding p53 posttranslational modifiers showed significant upregulation of three genes, Smyd2, Set, and Prmt5. Overexpression of SMYD2 was validated in vivo but the functional analysis was constrained by in vitro loss of p53 in RUNX2/MYC lymphoma cell lines. However, an early role is suggested by the ability of SMYD2 to block senescence‐like growth arrest induced by RUNX overexpression in primary fibroblasts.
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Affiliation(s)
- Jodie Hay
- Molecular Oncology Laboratory, Centre for Virus Research, Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Kathryn Gilroy
- Molecular Oncology Laboratory, Centre for Virus Research, Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Camille Huser
- Molecular Oncology Laboratory, Centre for Virus Research, Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Anna Kilbey
- Molecular Oncology Laboratory, Centre for Virus Research, Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Alma Mcdonald
- Molecular Oncology Laboratory, Centre for Virus Research, Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Amanda MacCallum
- Molecular Oncology Laboratory, Centre for Virus Research, Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Ailsa Holroyd
- Paul O'Gorman Leukaemia Research Centre, University of Glasgow, Glasgow, United Kingdom
| | - Ewan Cameron
- School of Veterinary Medicine, University of Glasgow, Glasgow, United Kingdom
| | - James C Neil
- Molecular Oncology Laboratory, Centre for Virus Research, Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, United Kingdom
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18
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Lee SR, Mun JY, Jeong MS, Lee HH, Roh YG, Kim WT, Kim MH, Heo J, Choi YH, Kim SJ, Cha HJ, Jun M, Leem SH. Thymoquinone-Induced Tristetraprolin Inhibits Tumor Growth and Metastasis through Destabilization of MUC4 mRNA. Int J Mol Sci 2019; 20:ijms20112614. [PMID: 31141941 PMCID: PMC6600862 DOI: 10.3390/ijms20112614] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 05/27/2019] [Accepted: 05/27/2019] [Indexed: 12/15/2022] Open
Abstract
Tristetraprolin (TTP), a well-characterized AU-rich element (ARE) binding protein, functions as a tumor suppressor gene. The purpose of this study was to investigate whether a bioactive substance derived from a natural medicinal plant affects the induction of TTP and to elucidate its mechanism. We examined the effects of natural bioactive materials including Resveratrol (RSV), thymoquinone (TQ) and curcumin on the expression of TTP in cancer cell. TQ derived from a natural plant Nigella sativa increased the expression levels of TTP mRNA and proteins in a dose-dependent manner in gastric and breast cancer cells. TQ-induced TTP increased the instability of MUC4 mRNA by direct binding of TTP to ARE in the 3′UTR of MUC4 mRNA. The induction of TTP by TQ also reduced the proliferation, migration and invasion of cancer cells. The expression of the epithelial-mesenchymal (EMT)-related genes, which were target genes of TTP, was also decreased by the TQ treatment. In the in vivo experiments using mouse melanoma cells, TQ-induced TTP inhibited metastasis of tumor cells. We have found that TQ-induced TTP might inhibit metastasis by reducing tumor cell migration and invasion through destabilization of MUC4 mRNA, which suggest the MUC4 as a novel target to TTP.
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Affiliation(s)
- Se-Ra Lee
- Department of Biological Science, Dong-A University, Busan 49315, Korea.
- Division of Drug Development & Optimization, Osong Medical Innovation Foundation (KBio), Chungbuk 28160, Korea.
| | - Jeong-Yeon Mun
- Department of Biological Science, Dong-A University, Busan 49315, Korea.
| | - Mi-So Jeong
- Department of Biological Science, Dong-A University, Busan 49315, Korea.
| | - Hyun-Hee Lee
- Department of Biological Science, Dong-A University, Busan 49315, Korea.
| | - Yun-Gil Roh
- Department of Biological Science, Dong-A University, Busan 49315, Korea.
| | - Won-Tae Kim
- Department of Biological Science, Dong-A University, Busan 49315, Korea.
| | - Min-Hye Kim
- Department of Biological Science, Dong-A University, Busan 49315, Korea.
| | - Jeonghoon Heo
- Departments of Molecular Biology and Immunology, College of Medicine, Kosin University, Busan 49267, Korea.
| | - Yung Hyun Choi
- Department of Biochemistry, College of Oriental Medicine, Anti-Aging Research Center, Dongeui University, Busan 47227, Korea.
| | - Su Jin Kim
- Department of Pathology, College of Medicine, Dong-A University, Busan 49315, Korea.
| | - Hee-Jae Cha
- Department of Parasitology and Genetics, Kosin University College of Medicine, Busan 602-702, Korea.
| | - Mira Jun
- Department of Food Science and Nutrition, Dong-A University, Busan 49315, Korea.
| | - Sun-Hee Leem
- Department of Biological Science, Dong-A University, Busan 49315, Korea.
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19
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Legrand N, Dixon DA, Sobolewski C. AU-rich element-binding proteins in colorectal cancer. World J Gastrointest Oncol 2019; 11:71-90. [PMID: 30788036 PMCID: PMC6379757 DOI: 10.4251/wjgo.v11.i2.71] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/11/2018] [Accepted: 01/01/2019] [Indexed: 02/05/2023] Open
Abstract
Trans-acting factors controlling mRNA fate are critical for the post-transcriptional regulation of inflammation-related genes, as well as for oncogene and tumor suppressor expression in human cancers. Among them, a group of RNA-binding proteins called “Adenylate-Uridylate-rich elements binding proteins” (AUBPs) control mRNA stability or translation through their binding to AU-rich elements enriched in the 3’UTRs of inflammation- and cancer-associated mRNA transcripts. AUBPs play a central role in the recruitment of target mRNAs into small cytoplasmic foci called Processing-bodies and stress granules (also known as P-body/SG). Alterations in the expression and activities of AUBPs and P-body/SG assembly have been observed to occur with colorectal cancer (CRC) progression, indicating the significant role AUBP-dependent post-transcriptional regulation plays in controlling gene expression during CRC tumorigenesis. Accordingly, these alterations contribute to the pathological expression of many early-response genes involved in prostaglandin biosynthesis and inflammation, along with key oncogenic pathways. In this review, we summarize the current role of these proteins in CRC development. CRC remains a major cause of cancer mortality worldwide and, therefore, targeting these AUBPs to restore efficient post-transcriptional regulation of gene expression may represent an appealing therapeutic strategy.
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Affiliation(s)
- Noémie Legrand
- Department of Microbiology, Faculty of Medicine, University of Geneva, Geneva CH-1211, Switzerland
| | - Dan A Dixon
- Department of Molecular Biosciences, University of Kansas, Lawrence, Kansas, and University of Kansas Cancer Center, Kansas City, KS 66045, United States
| | - Cyril Sobolewski
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva CH-1211, Switzerland
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20
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Roles of Tristetraprolin in Tumorigenesis. Int J Mol Sci 2018; 19:ijms19113384. [PMID: 30380668 PMCID: PMC6274954 DOI: 10.3390/ijms19113384] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 10/25/2018] [Accepted: 10/26/2018] [Indexed: 12/13/2022] Open
Abstract
Genetic loss or mutations in tumor suppressor genes promote tumorigenesis. The prospective tumor suppressor tristetraprolin (TTP) has been shown to negatively regulate tumorigenesis through destabilizing the messenger RNAs of critical genes implicated in both tumor onset and tumor progression. Regulation of TTP has therefore emerged as an important issue in tumorigenesis. Similar to other tumor suppressors, TTP expression is frequently downregualted in various human cancers, and its low expression is correlated with poor prognosis. Additionally, disruption in the regulation of TTP by various mechanisms results in the inactivation of TTP protein or altered TTP expression. A recent study showing alleviation of Myc-driven lymphomagenesis by the forced expression of TTP has shed light on new therapeutic avenues for cancer prevention and treatment through the restoration of TTP expression. In this review, we summarize key oncogenes subjected to the TTP-mediated mRNA degradation, and discuss how dysregulation of TTP can contribute to tumorigenesis. In addition, the control mechanism underlying TTP expression at the posttranscriptional and posttranslational levels will be discussed.
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21
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Lee SR, Jin H, Kim WT, Kim WJ, Kim SZ, Leem SH, Kim SM. Tristetraprolin activation by resveratrol inhibits the proliferation and metastasis of colorectal cancer cells. Int J Oncol 2018; 53:1269-1278. [PMID: 29956753 DOI: 10.3892/ijo.2018.4453] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 05/25/2018] [Indexed: 12/22/2022] Open
Abstract
Resveratrol (RSV) is a polyphenolic compound that naturally occurs in grapes, peanuts and berries. Considerable research has been conducted to determine the benefits of RSV against various human cancer types. Tristetraprolin (TTP) is an AU-rich element-binding protein that regulates mRNA stability and has decreased expression in human cancer. The present study investigated the biological effect of RSV on TTP gene regulation in colon cancer cells. RSV inhibited the proliferation and invasion/metastasis of HCT116 and SNU81 colon cancer cells. Furthermore, RSV induced a dose-dependent increase in TTP expression in HCT116 and SNU81 cells. The microarray experiment revealed that RSV significantly increased TTP expression by downregulating E2F transcription factor 1 (E2F1), a downstream target gene of TTP and regulated genes associated with inflammation, cell proliferation, cell death, angiogenesis and metastasis. Although TTP silencing inhibited TTP mRNA expression, the expression was subsequently restored by RSV. Small interfering RNA-induced TTP inhibition attenuated the effects of RSV on cell growth. In addition, RSV induced the mRNA-decaying activity of TTP and inhibited the relative luciferase activity of baculoviral IAP repeat containing 3 (cIAP2), large tumor suppressor kinase 2 (LATS2), E2F1, and lin‑28 homolog A (Lin28) in HCT116 and SNU81 cells. Therefore, RSV enhanced the inhibitory activity of TTP in HCT116 and SNU81 cells by negatively regulating cIAP2, E2F1, LATS2, and Lin28 expression. In conclusion, RSV suppressed the proliferation and invasion/metastasis of colon cancer cells by activating TTP.
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Affiliation(s)
- Se-Ra Lee
- Department of Biological Science, Dong-A University, Busan 49315, Republic of Korea
| | - Hua Jin
- Department of Physiology, Institute of Medical Science, Chonbuk National University Medical School, Jeonju, Jeonbuk 54907, Republic of Korea
| | - Won-Tae Kim
- Department of Biological Science, Dong-A University, Busan 49315, Republic of Korea
| | - Won-Jung Kim
- Department of Biological Science, Dong-A University, Busan 49315, Republic of Korea
| | - Sung Zoo Kim
- Department of Physiology, Institute of Medical Science, Chonbuk National University Medical School, Jeonju, Jeonbuk 54907, Republic of Korea
| | - Sun-Hee Leem
- Department of Biological Science, Dong-A University, Busan 49315, Republic of Korea
| | - Soo Mi Kim
- Department of Physiology, Institute of Medical Science, Chonbuk National University Medical School, Jeonju, Jeonbuk 54907, Republic of Korea
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22
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ZFP36L1 and ZFP36L2 inhibit cell proliferation in a cyclin D-dependent and p53-independent manner. Sci Rep 2018; 8:2742. [PMID: 29426877 PMCID: PMC5807420 DOI: 10.1038/s41598-018-21160-z] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 01/29/2018] [Indexed: 12/28/2022] Open
Abstract
ZFP36 family members include ZFP36, ZFP36L1, and ZFP36L2, which belong to CCCH-type zinc finger proteins with two tandem zinc finger (TZF) regions. Whether ZFP36L1 and ZFP36L2 have antiproliferative activities similar to that of ZFP36 is unclear. In this study, when ZFP36L1 or ZFP36L2 was overexpressed in T-REx-293 cells, cell proliferation was dramatically inhibited and the cell cycle was arrested at the G1 phase. The levels of cell-cycle-related proteins, including cyclin B, cyclin D, cyclin A, and p21, decreased; however, p53 increased in ZFP36L1-or ZFP36L2-overexpressing T-REx-293 cells. Forced expression of ZFP36L1 or ZFP36L2 also inhibited cell proliferation and cyclin D gene expression in three human colorectal cancer cell lines: HCT116 p53+/+, HCT116 p53−/−, and SW620 (mutated p53) cells. However, it increased p53 and p21 expression only in HCT116 p53+/+ cells. Knockdown of ZFP36L1 or ZFP36L2 increased cell proliferation and cyclin D expression; furthermore, the mutation of the TZF of ZFP36L1 or ZFP36L2 caused them to lose their antiproliferative ability, to the extent that they could not inhibit cyclin D expression in these three cell lines. The results indicated that ZFP36L1 and ZFP36L2 play a negative role in cell proliferation; the underlying mechanisms might be mediated through a cyclin D-dependent and p53-independent pathway.
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23
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Guo J, Qu H, Chen Y, Xia J. The role of RNA-binding protein tristetraprolin in cancer and immunity. Med Oncol 2017; 34:196. [DOI: 10.1007/s12032-017-1055-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 11/06/2017] [Indexed: 12/20/2022]
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24
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Ma XL, Li XC, Tian FJ, Zhang SM, Liu XR, Zhang Y, Fan JX, Lin Y. Effect of the p53-tristetraprolin-stathmin-1 pathway on trophoblasts at maternal-fetal interface. PLoS One 2017; 12:e0179852. [PMID: 28658321 PMCID: PMC5489185 DOI: 10.1371/journal.pone.0179852] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 06/05/2017] [Indexed: 12/13/2022] Open
Abstract
Problem To reveal the effect of p53–tristetraprolin–stathmin-1 signaling on trophoblasts and recurrent spontaneous abortion (RSA). Method of study Stathmin-1 (STMN1), p53, and tristetraprolin (TTP) expression in paraffin-embedded villus tissue was determined using immunohistochemistry. HTR-8/SVneo cells were treated with doxorubicin to activate p53; STMN1 and TTP levels were detected by quantitative reverse transcription–PCR and western blotting. Western blotting and immunofluorescence were used to investigate STMN1 expression after TTP overexpression or knockdown in HTR-8 cells. Results STMN1 was downregulated and p53 was upregulated in the villus tissue from patients with RSA. Doxorubicin decreased STMN1 expression but enhanced TTP expression in HTR-8 cells. In vitro, TTP overexpression inhibited STMN1 production; TTP knockdown promoted it. TTP downregulated STMN1 expression in trophoblasts by directly binding its 3ʹ untranslated region. Conclusions TTP modulates trophoblast function and interacts with STMN1 and p53, and is related to pregnancy outcomes.
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Affiliation(s)
- Xiao-Ling Ma
- Institute of Embryo-Fetal Original Adult Disease, The International Peace Maternity & Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Cui Li
- Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fu-Ju Tian
- Institute of Embryo-Fetal Original Adult Disease, The International Peace Maternity & Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Si-Ming Zhang
- Institute of Embryo-Fetal Original Adult Disease, The International Peace Maternity & Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Rui Liu
- Institute of Embryo-Fetal Original Adult Disease, The International Peace Maternity & Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Zhang
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jian-Xia Fan
- Institute of Embryo-Fetal Original Adult Disease, The International Peace Maternity & Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yi Lin
- Institute of Embryo-Fetal Original Adult Disease, The International Peace Maternity & Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- * E-mail:
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25
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Ma J, Li N, Zhao J, Lu J, Ma Y, Zhu Q, Dong Z, Liu K, Ming L. Histone deacetylase inhibitor trichostatin A enhances the antitumor effect of the oncolytic adenovirus H101 on esophageal squamous cell carcinoma in vitro and in vivo. Oncol Lett 2017; 13:4868-4874. [PMID: 28599488 DOI: 10.3892/ol.2017.6069] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 01/10/2017] [Indexed: 12/26/2022] Open
Abstract
Replication-selective oncolytic virotherapy provides a novel modality to treat cancer by inducing cell death in tumor cells but not in normal cells. However, the utilization of oncolytic viruses as a stand-alone treatment is problematic due to their poor transduction efficiency in vivo. H101 was the first oncolytic adenovirus (Ads) to be approved by the Chinese FDA, and exhibits modest antitumor effects when applied as a single agent. The multiple histone deacetylase inhibitor trichostatin A (TSA) has been demonstrated to potently enhance the spread and replication of oncolytic Ads in several infection-resistant types of cancer. The present study aimed to investigate the antitumor effects of H101 in combination with TSA on esophageal squamous cell carcinoma (ESCC) in vitro and in vivo, and determine the mechanisms underlying these effects. H101 and TSA in combination increased the survival of mice harboring human ESCC cell line-tumor xenografts, as compared with mice treated with these agents individually. Therefore, TSA may enhance the antitumor effects of H101 in ESCC.
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Affiliation(s)
- Junfen Ma
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Nan Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Jimin Zhao
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Jing Lu
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Yanqiu Ma
- Department of Obstetrics and Gynecology, Huaihe Hospital of Henan University, Kaifeng, Henan 475001, P.R. China
| | - Qinghua Zhu
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Ziming Dong
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Kangdong Liu
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Liang Ming
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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26
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Yoon NA, Jo HG, Lee UH, Park JH, Yoon JE, Ryu J, Kang SS, Min YJ, Ju SA, Seo EH, Huh IY, Lee BJ, Park JW, Cho WJ. Tristetraprolin suppresses the EMT through the down-regulation of Twist1 and Snail1 in cancer cells. Oncotarget 2017; 7:8931-43. [PMID: 26840564 PMCID: PMC4891015 DOI: 10.18632/oncotarget.7094] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 01/17/2016] [Indexed: 12/31/2022] Open
Abstract
Inhibition of epithelial-mesenchymal transition (EMT)-inducing transcription factors Twist and Snail prevents tumor metastasis but enhances metastatic growth. Here, we report an unexpected role of a tumor suppressor tristetraprolin (TTP) in inhibiting Twist and Snail without enhancing cellular proliferation. TTP bound to the AU-rich element (ARE) within the mRNA 3′UTRs of Twist1 and Snail1, enhanced the decay of their mRNAs and inhibited the EMT of cancer cells. The ectopic expression of Twist1 or Snail1 without their 3′UTRs blocked the inhibitory effects of TTP on the EMT. We also observed that TTP overexpression suppressed the growth of cancer cells. Our data propose a new model whereby TTP down-regulates Twist1 and Snail1 and inhibits both the EMT and the proliferation of cancer cells.
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Affiliation(s)
- Nal Ae Yoon
- Department of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea
| | - Hyun Gun Jo
- Department of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea
| | - Unn Hwa Lee
- Department of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea
| | - Ji Hye Park
- Department of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea
| | - Ji Eun Yoon
- Department of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea
| | - Jinhyun Ryu
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, School of Medicine, Gyeongsang National University, Jinju, Gyeongnam 52727, Korea
| | - Sang Soo Kang
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, School of Medicine, Gyeongsang National University, Jinju, Gyeongnam 52727, Korea
| | - Young Joo Min
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 682-060, Korea
| | - Seong-A Ju
- Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 682-060, Korea
| | - Eun Hui Seo
- Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 682-060, Korea
| | - In Young Huh
- Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 682-060, Korea
| | - Byung Ju Lee
- Department of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea
| | - Jeong Woo Park
- Department of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea
| | - Wha Ja Cho
- Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 682-060, Korea
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27
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Pathak S, Meng WJ, Nandy SK, Ping J, Bisgin A, Helmfors L, Waldmann P, Sun XF. Radiation and SN38 treatments modulate the expression of microRNAs, cytokines and chemokines in colon cancer cells in a p53-directed manner. Oncotarget 2016; 6:44758-80. [PMID: 26556872 PMCID: PMC4792590 DOI: 10.18632/oncotarget.5815] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Accepted: 10/26/2015] [Indexed: 02/07/2023] Open
Abstract
Aberrant expression of miRNAs, cytokines and chemokines are involved in pathogenesis of colon cancer. However, the expression of p53 mediated miRNAs, cyto- and chemokines after radiation and SN38 treatment in colon cancer remains elusive. Here, human colon cancer cells, HCT116 with wild-type, heterozygous and a functionally null p53, were treated by radiation and SN38. The expression of 384 miRNAs was determined by using the TaqMan® miRNA array, and the expression of cyto- and chemokines was analyzed by Meso-Scale-Discovery instrument. Up- or down-regulations of miRNAs after radiation and SN38 treatments were largely dependent on p53 status of the cells. Cytokines, IL-6, TNF-α, IL-1β, Il-4, IL-10, VEGF, and chemokines, IL-8, MIP-1α were increased, and IFN-γ expression was decreased after radiation, whereas, IL-6, IFN-γ, TNF-α, IL-1β, Il-4, IL-10, IL-8 were decreased, and VEGF and MIP-1α were increased after SN38 treatment. Bioinformatic analysis pointed out that the highly up-regulated miRNAs, let-7f-5p, miR-455-3p, miR-98, miR-155-5p and the down-regulated miRNAs, miR-1, miR-127-5p, miR-142-5p, miR-202-5p were associated with colon cancer pathways and correlated with cyto- or chemokine expression. These miRNAs have the potential for use in colon cancer therapy as they are related to p53, pro- or anti-inflammatory cyto- or chemokines after the radiation and SN38 treatment.
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Affiliation(s)
- Surajit Pathak
- Department of Oncology and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Wen-Jian Meng
- Department of Oncology and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.,Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Suman Kumar Nandy
- Department of Biochemistry & Biophysics, University of Kalyani, Kalyani, West Bengal, India
| | - Jie Ping
- Department of Oncology and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Atil Bisgin
- Department of Oncology and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Linda Helmfors
- Department of Molecular Biotechnology/IFM, Linköping University, Linköping, Sweden
| | - Patrik Waldmann
- Department of Computer and Information Science, Linköping University, Linköping, Sweden
| | - Xiao-Feng Sun
- Department of Oncology and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
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Kawarada Y, Inoue Y, Kawasaki F, Fukuura K, Sato K, Tanaka T, Itoh Y, Hayashi H. TGF-β induces p53/Smads complex formation in the PAI-1 promoter to activate transcription. Sci Rep 2016; 6:35483. [PMID: 27759037 PMCID: PMC5069723 DOI: 10.1038/srep35483] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 09/13/2016] [Indexed: 01/09/2023] Open
Abstract
Transforming growth factor β (TGF-β) signaling facilitates tumor development during the advanced stages of tumorigenesis, but induces cell-cycle arrest for tumor suppression during the early stages. However, the mechanism of functional switching of TGF-β is still unknown, and it is unclear whether inhibition of TGF-β signaling results amelioration or exacerbation of cancers. Here we show that the tumor suppressor p53 cooperates with Smad proteins, which are TGF-β signal transducers, to selectively activate plasminogen activator inhibitor type-1 (PAI-1) transcription. p53 forms a complex with Smad2/3 in the PAI-1 promoter to recruit histone acetyltransferase CREB-binding protein (CBP) and enhance histone H3 acetylation, resulting in transcriptional activation of the PAI-1 gene. Importantly, p53 is required for TGF-β-induced cytostasis and PAI-1 is involved in the cytostatic activity of TGF-β in several cell lines. Our results suggest that p53 enhances TGF-β-induced cytostatic effects by activating PAI-1 transcription, and the functional switching of TGF-β is partially caused by p53 mutation or p53 inactivation during cancer progression. It is expected that these findings will contribute to optimization of TGF-β-targeting therapies for cancer.
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Affiliation(s)
- Yuki Kawarada
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 467-8603 Nagoya, Japan
| | - Yasumichi Inoue
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 467-8603 Nagoya, Japan
- Department of Innovative Therapeutics Sciences, Cooperative major in Nanopharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 467-8603 Nagoya, Japan
| | - Fumihiro Kawasaki
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 467-8603 Nagoya, Japan
| | - Keishi Fukuura
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 467-8603 Nagoya, Japan
| | - Koichi Sato
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 467-8603 Nagoya, Japan
| | - Takahito Tanaka
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 467-8603 Nagoya, Japan
| | - Yuka Itoh
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 467-8603 Nagoya, Japan
- Department of Innovative Therapeutics Sciences, Cooperative major in Nanopharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 467-8603 Nagoya, Japan
| | - Hidetoshi Hayashi
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 467-8603 Nagoya, Japan
- Department of Innovative Therapeutics Sciences, Cooperative major in Nanopharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 467-8603 Nagoya, Japan
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Wu T, Chen X, Peng R, Liu H, Yin P, Peng H, Zhou Y, Sun Y, Wen L, Yi H, Li A, Zhang Z. Let‑7a suppresses cell proliferation via the TGF‑β/SMAD signaling pathway in cervical cancer. Oncol Rep 2016; 36:3275-3282. [PMID: 27748903 DOI: 10.3892/or.2016.5160] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 06/08/2016] [Indexed: 11/05/2022] Open
Abstract
Cervical cancer is the second most commonly diagnosed type of cancer among women after breast cancer. Recent research has addressed the role of microRNAs in cervical cancer. In the present study, we aimed to determine the effect of let‑7a on the regulation of the cell proliferation of cervical cancer and the related signaling pathway. Real‑time RT‑PCR was used to detect the expression of let‑7a in the blood of cervical cancer patients and normal controls. The expression of let‑7a was also assessed in cervical cancer cell lines: HeLa, SiHa and normal human immortalized keratinocyes HaCaT. Cell proliferation was tested by MTT assay, and cell apoptosis and cell cycle were examined by flow cytometric analysis in HeLa cells. Moreover, bioinformatic analysis, dual‑luciferase reporter assay and western blotting were used to confirm the target gene for let‑7a. In addition, the expression of TGF‑β1, SMAD4 and p53 were assessed by western blotting and real‑time PCR. Our studies showed that the expression of let‑7a in cervical cancer was significantly reduced in cervical cancer patients compared with the expression in the normal control group. Cell proliferation of HeLa cells was inhibited by overexpression of let‑7a. The cell cycle analysis showed that an increased population was arrested in the G2 phase in the let‑7a mimic group when compared with that in the mimic control and untreated groups. In addition, the cell cycle‑related factor p53 was increased in the let‑7a overexpression group compared with that in the control and untreated groups. Furthermore, TGFBR1 was confirmed to be a target of let‑7a. Moreover, the expression of TGF‑β1 and SMAD4 proteins was elevated in cervical squamous carcinoma and cervical adenocarcinoma tissues. However, the expression of TGF‑β1 and SMAD4 was decreased in the let‑7a‑overexpressing cervical cancer cell lines (HeLa, SiHa and CaSki). Our data suggest that let‑7a may play a role in the cell proliferation of cervical cancer by regulating the TGF‑β/SMAD pathway, and may participate in the regulation of the occurrence and development of cervical cancer.
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Affiliation(s)
- Tianhui Wu
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Xin Chen
- Department of Surgery, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400010, P.R. China
| | - Rui Peng
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Handeng Liu
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Pin Yin
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Huimin Peng
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yujian Zhou
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yan Sun
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Li Wen
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Hong Yi
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Ailing Li
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Zheng Zhang
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
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Park CH, Lee JH, Lee NK, Lee YC, Lee SK. Clinicopathological Characteristics of Patients with Gastric Cancer according to the Expression of LIN28A. Gut Liver 2016; 10:714-8. [PMID: 26893371 PMCID: PMC5003193 DOI: 10.5009/gnl15283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 09/05/2015] [Accepted: 09/08/2015] [Indexed: 11/19/2022] Open
Abstract
Background/Aims Although LIN28A is known to potentially play a role in the oncogenesis of various cancers, whether LIN28A expression is a predictor of poor prognosis in patients with gastric cancer has not been fully explored. We sought to evaluate clinicopathological characteristics according to the expression of LIN28A in numerous gastric cancer tissue samples. Methods LIN28A expression was evaluated by immunohistochemical (IHC) analysis of a tissue microarray comprising 288 gastric cancer tissues and 288 adjacent normal tissues. Clinicopathological characteristics, including overall survival, were compared according to LIN28A expression. Results The IHC staining score was lower for the cancer tissues than the normal tissues (p<0.001). However, no significant differences were observed in the clinicopathological characteristics between the low and high LIN28A expression groups. In addition, the 5-year overall survival rate did not differ between the two groups: 75.3% (95% confidence interval [CI], 69.3% to 81.7%) versus 71.6% (95% CI, 63.3% to 80.9%) for low versus high expression, respectively. Conclusions The expression of LIN28A did not appear to play a distinct role in predicting the clinicopathological characteristics of patients with gastric cancer. In addition, LIN28A expression was not an independently associated factor for overall survival in patients with gastric cancer.
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Affiliation(s)
- Chan Hyuk Park
- Department of Internal Medicine, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea
| | - Jung Hwa Lee
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Na Keum Lee
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Yong Chan Lee
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Kil Lee
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
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Lou N, Ruan AM, Qiu B, Bao L, Xu YC, Zhao Y, Sun RL, Zhang ST, Xu GH, Ruan HL, Yuan CF, Han WW, Shi HC, Yang HM, Zhang XP. miR-144-3p as a novel plasma diagnostic biomarker for clear cell renal cell carcinoma. Urol Oncol 2016; 35:36.e7-36.e14. [PMID: 27633984 DOI: 10.1016/j.urolonc.2016.07.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 05/02/2016] [Accepted: 07/18/2016] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Clear cell renal cell carcinoma (ccRCC) is the most frequent and lethal subtype of renal cell carcinoma, whose most effective measure of curing remains diagnosis and nephrectomy in its early phase. However, there is no feasible and recognized plasma biomarker for the clinical diagnosis of ccRCC. The objective of this study is to identify a novel plasma microRNA (miRNA) acting as an efficient diagnostic plasma biomarker in ccRCC. METHODS AND MATERIALS The plasma miRNA expression profile was quantified by miRNA microarray. Validation of miRNA levels of plasmas and tissues were performed by quantitative reverse transcription polymerase chain reaction in 106 ccRCC, 28 renal angiomyolipomas (AML), and 123 healthy control plasmas and in 110 ccRCC tissues. RESULTS We found that plasma miR-144-3p levels in 106 ccRCC plasmas were remarkably up-regulated compared with that in healthy individuals and in patients with AML. miR-144-3p served as a promising plasma biomarker for yielding an area under the receiver operating characteristic curve of 0.91 with 87.10% sensitivity and 83.02% specificity in discriminating ccRCC from healthy individuals, and an area under the curve of 0.82 with 75.00% sensitivity and 71.70% specificity in discriminating ccRCC from patients with AML. In addition, plasma miR-144-3p levels were significantly decreased after surgery in 106 patients with ccRCC. Next, we examined miR-144-3p levels in 110 human ccRCC tissues, and found that miR-144-3p levels in ccRCC tissues were increased compared with adjacent normal tissues. Pearson correlation analysis revealed that miR-144-3p levels in tumor tissues were positively correlated with preoperative plasma miR-144-3p levels in the matched samples from patients with ccRCC. In addition, the miR-144-3p levels in ccRCC plasmas and tissues were increased in patients with advanced pT stage. CONCLUSIONS Our data indicate that miR-144-3p, which is significantly up-regulated in ccRCC plasmas and tissues, particularly with advanced pT stage, is a novel and excellent plasma biomarker for the diagnosis of ccRCC.
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Affiliation(s)
- Ning Lou
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan 430022, China
| | - An-Ming Ruan
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan 430022, China
| | - Bin Qiu
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan 430022, China
| | - Lin Bao
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan 430022, China
| | - Yu-Chen Xu
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan 430022, China
| | - Yan Zhao
- Department of Pathogenic Biology, School of Basic Medicine, Huazhong University of Science and Technology, 13 HangKong Road, Wuhan 430030, China
| | - Ru-Lin Sun
- Department of Pathogenic Biology, School of Basic Medicine, Huazhong University of Science and Technology, 13 HangKong Road, Wuhan 430030, China
| | - San-Tao Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Huazhong University of Science and Technology, 13 HangKong Road, Wuhan 430030, China
| | - Guang-Hua Xu
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan 430022, China
| | - Hai-Long Ruan
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan 430022, China
| | - Chang-Fei Yuan
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan 430022, China
| | - Wei-Wei Han
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan 430022, China
| | - Hang-Chuan Shi
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan 430022, China
| | - Hong-Mei Yang
- Department of Pathogenic Biology, School of Basic Medicine, Huazhong University of Science and Technology, 13 HangKong Road, Wuhan 430030, China
| | - Xiao-Ping Zhang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan 430022, China.
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Khabar KSA. Hallmarks of cancer and AU-rich elements. WILEY INTERDISCIPLINARY REVIEWS-RNA 2016; 8. [PMID: 27251431 PMCID: PMC5215528 DOI: 10.1002/wrna.1368] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/05/2016] [Accepted: 05/09/2016] [Indexed: 12/14/2022]
Abstract
Post‐transcriptional control of gene expression is aberrant in cancer cells. Sustained stabilization and enhanced translation of specific mRNAs are features of tumor cells. AU‐rich elements (AREs), cis‐acting mRNA decay determinants, play a major role in the posttranscriptional regulation of many genes involved in cancer processes. This review discusses the role of aberrant ARE‐mediated posttranscriptional processes in each of the hallmarks of cancer, including sustained cellular growth, resistance to apoptosis, angiogenesis, invasion, and metastasis. WIREs RNA 2017, 8:e1368. doi: 10.1002/wrna.1368 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Khalid S A Khabar
- King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
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33
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Barrios-García T, Gómez-Romero V, Tecalco-Cruz Á, Valadéz-Graham V, León-Del-Río A. Nuclear tristetraprolin acts as a corepressor of multiple steroid nuclear receptors in breast cancer cells. Mol Genet Metab Rep 2016; 7:20-6. [PMID: 27114912 PMCID: PMC4832087 DOI: 10.1016/j.ymgmr.2016.02.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 02/20/2016] [Indexed: 11/18/2022] Open
Abstract
Tristetraprolin (TTP) is a 34-kDa, zinc finger-containing factor that in mammalian cells acts as a tumor suppressor protein through two different mechanisms. In the cytoplasm TTP promotes the decay of hundreds of mRNAs encoding cell factors involved in inflammation, tissue invasion, and metastasis. In the cell nucleus TTP has been identified as a transcriptional corepressor of the estrogen receptor alpha (ERα), which has been associated to the development and progression of the majority of breast cancer tumors. In this work we report that nuclear TTP modulates the transactivation activity of progesterone receptor (PR), glucocorticoid receptor (GR) and androgen receptor (AR). In recent years these steroid nuclear receptors have been shown to be of clinical and therapeutical relevance in breast cancer. The functional association between TTP and steroid nuclear receptors is supported by the finding that TTP physically interacts with ERα, PR, GR and AR in vivo. We also show that TTP overexpression attenuates the transactivation of all the steroid nuclear receptors tested. In contrast, siRNA-mediated reduction of endogenous TTP expression in MCF-7 cells produced an increase in the transcriptional activities of ERα, PR, GR and AR. Taken together, these results suggest that the function of nuclear TTP in breast cancer cells is to act as a corepressor of ERα, PR, GR and AR. We propose that the reduction of TTP expression observed in different types of breast cancer tumors may contribute to the development of this disease by producing a dysregulation of the transactivation activity of multiple steroid nuclear receptors.
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Affiliation(s)
- Tonatiuh Barrios-García
- Programa de Investigación de Cáncer de Mama, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, Mexico D.F. 04510, Mexico
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, Mexico D.F. 04510, Mexico
| | - Vania Gómez-Romero
- Programa de Investigación de Cáncer de Mama, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, Mexico D.F. 04510, Mexico
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, Mexico D.F. 04510, Mexico
| | - Ángeles Tecalco-Cruz
- Programa de Investigación de Cáncer de Mama, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, Mexico D.F. 04510, Mexico
| | - Viviana Valadéz-Graham
- Departamento Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Cuernavaca 62210, Morelos, Mexico
| | - Alfonso León-Del-Río
- Programa de Investigación de Cáncer de Mama, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, Mexico D.F. 04510, Mexico
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, Mexico D.F. 04510, Mexico
- Corresponding author at: Programa de Investigación de Cáncer de Mama, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México. Av. Universidad 3000, Mexico D.F. 04510, Mexico.Programa de Investigación de Cáncer de MamaInstituto de Investigaciones BiomédicasUniversidad Nacional Autónoma de MéxicoAv. Universidad 3000Mexico D.F.Mexico04510
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Pandiri I, Chen Y, Joe Y, Kim HJ, Park J, Chung HT, Park JW. Tristetraprolin mediates the anti-proliferative effects of metformin in breast cancer cells. Breast Cancer Res Treat 2016; 156:57-64. [PMID: 26956973 PMCID: PMC4788686 DOI: 10.1007/s10549-016-3742-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 03/02/2016] [Indexed: 12/21/2022]
Abstract
Metformin, which is a drug commonly prescribed to treat type 2 diabetes, has anti-proliferative effects in cancer cells; however, the molecular mechanisms underlying this effect remain largely unknown. The aim is to investigate the role of tristetraprolin (TTP), an AU-rich element-binding protein, in anti-proliferative effects of metformin in cancer cells. p53 wild-type and p53 mutant breast cancer cells were treated with metformin, and expression of TTP and c-Myc was analyzed by semi-quantitative RT-PCR, Western blots, and promoter activity assay. Breast cancer cells were transfected with siRNA against TTP to inhibit TTP expression or c-Myc and, after metformin treatment, analyzed for cell proliferation by MTS assay. Metformin induces the expression of tristetraprolin (TTP) in breast cancer cells in a p53-independent manner. Importantly, inhibition of TTP abrogated the anti-proliferation effect of metformin. We observed that metformin decreased c-Myc levels, and ectopic expression of c-Myc blocked the effect of metformin on TTP expression and cell proliferation. Our data indicate that metformin induces TTP expression by reducing the expression of c-Myc, suggesting a new model whereby TTP acts as a mediator of metformin’s anti-proliferative activity in cancer cells.
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Affiliation(s)
- Indira Pandiri
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, Korea
| | - Yingqing Chen
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, Korea
| | - Yeonsoo Joe
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, Korea
| | - Hyo Jeong Kim
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, Korea
| | - Jeongmin Park
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, Korea
| | - Hun Taeg Chung
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, Korea.
| | - Jeong Woo Park
- Department of Biological Sciences, University of Ulsan, Ulsan, 680-749, Korea.
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Ryu J, Yoon NA, Seong H, Jeong JY, Kang S, Park N, Choi J, Lee DH, Roh GS, Kim HJ, Cho GJ, Choi WS, Park JY, Park JW, Kang SS. Resveratrol Induces Glioma Cell Apoptosis through Activation of Tristetraprolin. Mol Cells 2015; 38:991-7. [PMID: 26537190 PMCID: PMC4673414 DOI: 10.14348/molcells.2015.0197] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 09/03/2015] [Accepted: 09/07/2015] [Indexed: 12/30/2022] Open
Abstract
Tristetraprolin (TTP) is an AU-rich elements (AREs)-binding protein, which regulates the decay of AREs-containing mRNAs such as proto-oncogenes, anti-apoptotic genes and immune regulatory genes. Despite the low expression of TTP in various human cancers, the mechanism involving suppressed expression of TTP is not fully understood. Here, we demonstrate that Resveratrol (3,5,4'-trihydroxystilbene, Res), a naturally occurring compound, induces glioma cell apoptosis through activation of tristetraprolin (TTP). Res increased TTP expression in U87MG human glioma cells. Res-induced TTP destabilized the urokinase plasminogen activator and urokinase plasminogen activator receptor mRNAs by binding to the ARE regions containing the 3' untranslated regions of their mRNAs. Furthermore, TTP induced by Res suppressed cell growth and induced apoptosis in the human glioma cells. Because of its regulation of TTP expression, these findings suggest that the bioactive dietary compound Res can be used as a novel anti-cancer agent for the treatment of human malignant gliomas.
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Affiliation(s)
- Jinhyun Ryu
- Department of Anatomy and Convergence Medical Science, Institute of Health Science, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
| | - Nal Ae Yoon
- Department of Anatomy and Convergence Medical Science, Institute of Health Science, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
| | - Hyemin Seong
- Department of Anatomy and Convergence Medical Science, Institute of Health Science, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
| | - Joo Yeon Jeong
- Department of Anatomy and Convergence Medical Science, Institute of Health Science, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
| | - Seokmin Kang
- Department of Anatomy and Convergence Medical Science, Institute of Health Science, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
| | - Nammi Park
- Department of Physiology, Institute of Health Sciences, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
| | - Jungil Choi
- Gyeongnam Department of Environmental Toxicology and Chemistry, Korea Institute of Toxicology (KIT), Jinju 660-844,
Korea
| | - Dong Hoon Lee
- Department of Anatomy and Convergence Medical Science, Institute of Health Science, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
| | - Gu Seob Roh
- Department of Anatomy and Convergence Medical Science, Institute of Health Science, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
| | - Hyun Joon Kim
- Department of Anatomy and Convergence Medical Science, Institute of Health Science, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
| | - Gyeong Jae Cho
- Department of Anatomy and Convergence Medical Science, Institute of Health Science, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
| | - Wan Sung Choi
- Department of Anatomy and Convergence Medical Science, Institute of Health Science, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
| | - Jae-Yong Park
- School of Biosystem and Biomedical Science, College of Health Science, Korea University, Seoul 02841,
Korea
| | - Jeong Woo Park
- Department of Biological Sciences, University of Ulsan, Ulsan 680-749,
Korea
| | - Sang Soo Kang
- Department of Anatomy and Convergence Medical Science, Institute of Health Science, School of Medicine, Gyeongsang National University, Jinju 52727,
Korea
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The effects of a novel aliphatic-chain hydroxamate derivative WMJ-S-001 in HCT116 colorectal cancer cell death. Sci Rep 2015; 5:15900. [PMID: 26510776 PMCID: PMC4625135 DOI: 10.1038/srep15900] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 10/05/2015] [Indexed: 01/03/2023] Open
Abstract
Hydroxamate derivatives have attracted considerable attention due to their broad pharmacological properties and have been extensively investigated. We recently demonstrated that WMJ-S-001, a novel aliphatic hydroxamate derivative, exhibits anti-inflammatory and anti-angiogenic activities. In this study, we explored the underlying mechanisms by which WMJ-S-001 induces HCT116 colorectal cancer cell death. WMJ-S-001 inhibited cell proliferation and induced cell apoptosis in HCT116 cells. These actions were associated with AMP-activated protein kinase (AMPK) and p38 mitogen-activated protein kinase (MAPK) activation, p53 phosphorylation and acetylation, as well as the modulation of p21(cip/Waf1), cyclin D1, survivin and Bax. AMPK-p38MAPK signaling blockade reduced WMJ-S-001-induced p53 phosphorylation. Transfection with AMPK dominant negative mutant (DN) reduced WMJ-S-001's effects on p53 and Sp1 binding to the survivn promoter region. Transfection with HDAC3-Flag or HDAC4-Flag also abrogated WMJ-S-001's enhancing effect on p53 acetylation. WMJ-S-001's actions on p21(cip/Waf1), cyclin D1, survivin, Bax were reduced in p53-null HCT116 cells. Furthermore, WMJ-S-001 was shown to suppress the growth of subcutaneous xenografts of HCT116 cells in vivo. In summary, the death of HCT116 colorectal cancer cells exposed to WMJ-S-001 may involve AMPK-p38MAPK-p53-survivin cascade. These results support the role of WMJ-S-001 as a potential drug candidate and warrant the clinical development in the treatment of cancer.
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Abstract
The predominant function of the tumor suppressor p53 is transcriptional regulation. It is generally accepted that p53-dependent transcriptional activation occurs by binding to a specific recognition site in promoters of target genes. Additionally, several models for p53-dependent transcriptional repression have been postulated. Here, we evaluate these models based on a computational meta-analysis of genome-wide data. Surprisingly, several major models of p53-dependent gene regulation are implausible. Meta-analysis of large-scale data is unable to confirm reports on directly repressed p53 target genes and falsifies models of direct repression. This notion is supported by experimental re-analysis of representative genes reported as directly repressed by p53. Therefore, p53 is not a direct repressor of transcription, but solely activates its target genes. Moreover, models based on interference of p53 with activating transcription factors as well as models based on the function of ncRNAs are also not supported by the meta-analysis. As an alternative to models of direct repression, the meta-analysis leads to the conclusion that p53 represses transcription indirectly by activation of the p53-p21-DREAM/RB pathway.
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Key Words
- CDE, cell cycle-dependent element
- CDKN1A
- CHR, cell cycle genes homology region
- ChIP, chromatin immunoprecipitation
- DREAM complex
- DREAM, DP, RB-like, E2F4, and MuvB complex
- E2F/RB complex
- HPV, human papilloma virus
- NF-Y, Nuclear factor Y
- cdk, cyclin-dependent kinase
- genome-wide meta-analysis
- p53
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Affiliation(s)
- Martin Fischer
- a Molecular Oncology; Medical School ; University of Leipzig ; Leipzig , Germany
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Zhao S, Gong Z, Zhang J, Xu X, Liu P, Guan W, Jing L, Peng T, Teng J, Jia Y. Elevated Serum MicroRNA Let-7c in Moyamoya Disease. J Stroke Cerebrovasc Dis 2015; 24:1709-14. [PMID: 26070522 DOI: 10.1016/j.jstrokecerebrovasdis.2015.01.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 01/23/2015] [Accepted: 01/27/2015] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Few studies have examined the relationship between mircroRNAs and moyamoya disease (MMD). We performed a study of the significance of let-7c expression in the serum of MMD patients. METHODS The experimental group includes 49 MMD patients, and the control group consists of 30 normal people, 20 cerebral hemorrhage patients, 20 massive cerebral infarction patients, 20 nonmassive cerebral infarction patients, and 20 neurological autoimmune disease patients. Let-7 family levels were determined by polymerase chain reaction. A dual luciferase assay was used to test whether let-7c recognized the 3'UTR of RNF213. RESULTS The expression level of let-7c in MMD patients is higher than that observed in the control groups (P < .001). The luciferase assay results indicated that hsa-let-7c could diminish luciferase activity from a reporter vector containing the 3'-UTR of RNF213 (P < .05). The suppression of luciferase activity is not found in mutRNF213 (P > .05). CONCLUSIONS Increased expression of let-7c in MMD patients may contribute to MMD pathogenesis by targeting RNF213. Thus, let-7c may be a potential biomarker for the diagnosis of MMD.
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Affiliation(s)
- Shaoyun Zhao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Department of Clinical Medicine, Zhengzhou University, Zhengzhou, China
| | - Zhe Gong
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Department of Clinical Medicine, Zhengzhou University, Zhengzhou, China
| | - Jing Zhang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Department of Clinical Medicine, Zhengzhou University, Zhengzhou, China
| | - Xiaoge Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Department of Clinical Medicine, Zhengzhou University, Zhengzhou, China
| | - Peidong Liu
- Department of Clinical Medicine, Zhengzhou University, Zhengzhou, China
| | - Wenjuan Guan
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Lijun Jing
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Tao Peng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Junfang Teng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yanjie Jia
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
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Xie C, Chen W, Zhang M, Cai Q, Xu W, Li X, Jiang S. MDM4 regulation by the let-7 miRNA family in the DNA damage response of glioma cells. FEBS Lett 2015; 589:1958-65. [PMID: 26028311 DOI: 10.1016/j.febslet.2015.05.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Revised: 05/07/2015] [Accepted: 05/15/2015] [Indexed: 12/31/2022]
Abstract
Despite extensive investigation into the role of let-7 miRNAs in pathological tumor processes, their involvement in the DNA damage response remains unclear. Here we show that most let-7 family members down-regulate MDM4 expression via binding to MDM4 mRNA at a conserved DNA sequence. Expression of exogenous let-7 miRNA mimics decreased MDM4 protein but not mRNA levels. Several DNA damage reagents increased let-7 expression, thereby decreasing MDM4 protein levels in glioma cells. Inhibition of endogenous let-7 with antisense RNAs rescued MDM4 protein levels with or without MG132, a proteasome-dependent degradation inhibitor. An MDM4 mutation identified in a glioma patient was associated with loss of the putative MDM4 target site. Therefore, let-7 binding to MDM4 is implicated in the DNA damage response.
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Affiliation(s)
- Chen Xie
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China; Shenzhen Weiguang Biological Products Co., Ltd., Shenzhen 518107, China
| | - Wei Chen
- Department of Gynecology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, China; Gene Science & Health Company, Shenzhen 518048, China
| | - Mengdie Zhang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Qiuxian Cai
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Weiyi Xu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xiaodi Li
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Songshan Jiang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China.
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Selmi T, Alecci C, dell' Aquila M, Montorsi L, Martello A, Guizzetti F, Volpi N, Parenti S, Ferrari S, Salomoni P, Grande A, Zanocco-Marani T. ZFP36 stabilizes RIP1 via degradation of XIAP and cIAP2 thereby promoting ripoptosome assembly. BMC Cancer 2015; 15:357. [PMID: 25939870 PMCID: PMC4424499 DOI: 10.1186/s12885-015-1388-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 04/28/2015] [Indexed: 11/10/2022] Open
Abstract
Background ZFP36 is an mRNA binding protein that exerts anti-tumor activity in glioblastoma by triggering cell death, associated to an increase in the stability of the kinase RIP1. Methods We used cell death assays, size exclusion chromatography, Co-Immunoprecipitation, shRNA lentivectors and glioma neural stem cells to determine the effects of ZFP36 on the assembly of a death complex containing RIP1 and on the induction of necroptosis. Results Here we demonstrate that ZFP36 promotes the assembly of the death complex called Ripoptosome and induces RIP1-dependent death. This involves the depletion of the ubiquitine ligases cIAP2 and XIAP and leads to the association of RIP1 to caspase-8 and FADD. Moreover, we show that ZFP36 controls RIP1 levels in glioma neural stem cell lines. Conclusions We provide a molecular mechanism for the tumor suppressor role of ZFP36, and the first evidence for Ripoptosome assembly following ZFP36 expression. These findings suggest that ZFP36 plays an important role in RIP1-dependent cell death in conditions where IAPs are depleted. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1388-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Tommaso Selmi
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy.
| | - Claudia Alecci
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy.
| | - Miriam dell' Aquila
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy.
| | - Lucia Montorsi
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy.
| | - Andrea Martello
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy.
| | - Filippo Guizzetti
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy.
| | - Nicola Volpi
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy.
| | - Sandra Parenti
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy.
| | - Sergio Ferrari
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy.
| | - Paolo Salomoni
- Samantha Dickson Brain Cancer Unit, UCL Cancer Institute, London WC1E 6BT, United Kingdom.
| | - Alexis Grande
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy.
| | - Tommaso Zanocco-Marani
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy.
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Dip N, Reis ST, Viana NI, Morais DR, Moura CM, Katz B, Abe DK, Iscaife A, Silva IA, Srougi M, Leite KRM. MiRNA in bladder carcinogenesis: A review. World J Clin Urol 2014; 3:238-248. [DOI: 10.5410/wjcu.v3.i3.238] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 06/30/2014] [Accepted: 08/31/2014] [Indexed: 02/06/2023] Open
Abstract
Bladder cancer (BC) is the second urological malignancy in incidence, currently being one of the most neoplasms studied with profile and biology poorly defined. In the world, BC is responsible by about 386000 new cases and 150000 deaths annually with considerable economic impact and high costs for health systems. After its discovery more than 20 years, micro RNAs (miRNAs) have been recognized as molecules that work specifically in post-transcriptional control in majority of eukaryote genomes. MiRNAs are a family of small non-coding RNAs of 19-25 nucleotides in length, expressed in a wide variety of organisms, comprising plants, worms and mammals, including humans. They have a fundamental role in physiological and pathological processes in organs and tissues in a context-dependent manner. This review brings new roles of protective and oncogenic miRNAs linked to carcinogenesis of urothelial carcinoma of the bladder, and associated with behavior of disease. Many studies have demonstrated promising roles of miRNAs working as diagnostic and prognostic biomarkers or involved in target therapies, consolidating miRNAs as crucial players in human cancer. This review allowed a reflection about the true functions of miRNAs in bladder carcinogenesis. Not only by their wide capacities of action, but also by abilities in define the cell date. The future of anti-tumor target therapies will be based not in one, but in groups of miRNAs working together in several steps of carcinogenic process, being able to identify the disease, predicting behavior and effectively treat bladder cancer.
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42
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Huang K, Chen L, Zhang J, Wu Z, Lan L, Wang L, Lu B, Liu Y. Elevated p53 expression levels correlate with tumor progression and poor prognosis in patients exhibiting esophageal squamous cell carcinoma. Oncol Lett 2014; 8:1441-1446. [PMID: 25202347 PMCID: PMC4156227 DOI: 10.3892/ol.2014.2343] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Accepted: 06/19/2014] [Indexed: 12/15/2022] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is the most common histological subtype of esophageal cancer and one of the most aggressive types of malignancy, with a high rate of mortality. Early diagnosis and treatment may improve the prognosis of ESCC and, thus, survival rates. As a significant tumor suppressor, p53 is closely associated with apoptosis and the differentiation of cancer cells. The present study evaluated the expression levels of the p53 protein and the clinical significance in patients presenting with ESCC. The p53 protein expression level of 64 paired ESCC and tumor-adjacent normal tissues was evaluated using western blot analysis. In addition, immunohistochemistry (IHC) was performed to detect the p53 expression level in specimens from 118 paraffin-embedded cancerous tissues. The correlation of the p53 expression level with the clinicopathological parameters and prognosis of the ESCC patients was also analyzed. The p53 protein was identified to be highly expressed in the ESCC tissue, with western blot analysis demonstrating that the expression level of p53 in the cancerous tissue was 1.89 times that of the tumor-adjacent normal tissue (P<0.001); furthermore, IHC indicated that there was a marked positive expression of p53 in the ESCC tissue (49.15%). The expression level of p53 protein was identified to be significantly correlated with the tumor grade (P<0.001), N stage (P=0.010). Additionally, the higher level of p53 expression was found to be associated with a poor survival rate in the ESCC patients (P=0.0404). The univariate analysis showed that the survival time of patients was significantly correlated with the T stage (RR=3.886, P<0.001), N stage (lymph node metastasis; RR=3.620, P<0.001) and TNM stage (RR=3.576, P<0.001). Furthermore, the multivariate analysis revealed that the T stage (RR=3.988, P<0.001) and N stage (RR=4.240, P=0.004) significantly influenced the overall survival of the ESCC patients.
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Affiliation(s)
- Kate Huang
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Lin Chen
- Department of Biochemistry and Molecular Biology, Attardi Institute of Mitochondrial Biomedicine, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Jiliang Zhang
- Department of Biochemistry and Molecular Biology, Attardi Institute of Mitochondrial Biomedicine, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Zhi Wu
- Department of Biochemistry and Molecular Biology, Attardi Institute of Mitochondrial Biomedicine, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Linhua Lan
- Department of Biochemistry and Molecular Biology, Attardi Institute of Mitochondrial Biomedicine, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Lu Wang
- Department of Biochemistry and Molecular Biology, Attardi Institute of Mitochondrial Biomedicine, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Bin Lu
- Department of Biochemistry and Molecular Biology, Attardi Institute of Mitochondrial Biomedicine, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Yongzhang Liu
- Department of Biochemistry and Molecular Biology, Attardi Institute of Mitochondrial Biomedicine, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
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Zhang DG, Zheng JN, Pei DS. P53/microRNA-34-induced metabolic regulation: new opportunities in anticancer therapy. Mol Cancer 2014; 13:115. [PMID: 24884974 PMCID: PMC4035797 DOI: 10.1186/1476-4598-13-115] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 05/08/2014] [Indexed: 12/19/2022] Open
Abstract
MicroRNA-34 (miR-34) is directly regulated by p53, and its potential tumor suppressive roles have been studied extensively. As a p53-induced microRNA, miR-34 functions as a tumor suppressor by playing a role in cell cycle arrest, apoptosis and metabolic regulation. Among these p53/miR-34 associated processes, apoptosis and cell cycle arrest are known as essential for p53/miR-34-mediated tumor suppression. P53-mediated metabolic processes have been shown to play pivotal roles in cancer cell biology. Recent studies have also identified several miR-34 targets involved in p53/miR-34-induced metabolic regulation. However, correlations among these metabolic targets remain to be fully elucidated. In this review, we summarize the current progress in the field of metabolic regulation by the p53/miR-34 axis and propose future directions for the development of metabolic approaches in anticancer therapy.
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Affiliation(s)
| | - Jun-Nian Zheng
- Jiangsu Key Laboratory of Biological Cancer Therapy, Xuzhou Medical College, 84 West Huai-hai Road, 221002 Xuzhou, Jiangsu, China.
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Xiao L, Chang AK, Zang MX, Bi H, Li S, Wang M, Xing X, Wu H. Induction of the CLOCK gene by E2-ERα signaling promotes the proliferation of breast cancer cells. PLoS One 2014; 9:e95878. [PMID: 24789043 PMCID: PMC4008427 DOI: 10.1371/journal.pone.0095878] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 04/01/2014] [Indexed: 11/19/2022] Open
Abstract
Growing genetic and epidemiological evidence suggests a direct connection between the disruption of circadian rhythm and breast cancer. Moreover, the expression of several molecular components constituting the circadian clock machinery has been found to be modulated by estrogen-estrogen receptor α (E2-ERα) signaling in ERα-positive breast cancer cells. In this study, we investigated the regulation of CLOCK expression by ERα and its roles in cell proliferation. Immunohistochemical analysis of human breast tumor samples revealed high expression of CLOCK in ERα-positive breast tumor samples. Subsequent experiments using ERα-positive human breast cancer cell lines showed that both protein and mRNA levels of CLOCK were up-regulated by E2 and ERα. In these cells, E2 promoted the binding of ERα to the EREs (estrogen-response elements) of CLOCK promoter, thereby up-regulating the transcription of CLOCK. Knockdown of CLOCK attenuated cell proliferation in ERα-positive breast cancer cells. Taken together, these results demonstrated that CLOCK could be an important gene that mediates cell proliferation in breast cancer cells.
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Affiliation(s)
- Liyun Xiao
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Alan K. Chang
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Ming-Xi Zang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Hailian Bi
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Shujing Li
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Miao Wang
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Xinrong Xing
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Huijian Wu
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
- School of Life Science and Medicine, Dalian University of Technology, Panjin, China
- * E-mail:
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45
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Xia Y, Zhu Y, Zhou X, Chen Y. Low expression of let-7 predicts poor prognosis in patients with multiple cancers: a meta-analysis. Tumour Biol 2014; 35:5143-8. [PMID: 24756756 DOI: 10.1007/s13277-014-1663-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 01/14/2014] [Indexed: 01/09/2023] Open
Abstract
The connection between microRNA expression and cancers has been identified, and microRNAs may be considered as important prognostic biomarkers. However, it is still inconsistent whether expression of let-7 can predict prognosis in patients with multiple cancers. A meta-analysis was performed by searching PubMed, EMBASE, and ISI Web of Science databases. All data were extracted from articles comparing prognosis in patients with multiple cancers having low expression of let-7 with those having high expression. Pooled hazard ratios (HRs) and corresponding 95 % confidence intervals (CIs) were calculated. Subgroup analyses were conducted for cancer type and ethnicity. A total of 1,757 cases of multiple cancers were involved for this meta-analysis. The HR of low let-7 expression in multiple cancers was 1.80 (95 % CI 1.18-2.76), and that in lung cancer was 1.99 (95 % CI 1.17-3.40). A subgroup analysis was performed on ethnicity; combined HR was 1.61 (95 % CI 0.84-3.11) for Asians and 1.94 (95 % CI 1.11-3.39) for non-Asians. Low expression of let-7 might predict poor prognosis in patients with multiple cancers, especially in lung cancer. Furthermore, let-7 might be a biomarker in non-Asian patients with favorable prognosis.
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Affiliation(s)
- Yang Xia
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, 210000, China
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Hu J, Wang Z, Liao BY, Yu L, Gao X, Lu S, Wang S, Dai Z, Zhang X, Chen Q, Qiu SJ, Wu Y, Zhu H, Fan J, Zhou J, Wang J. Human miR-1228 as a stable endogenous control for the quantification of circulating microRNAs in cancer patients. Int J Cancer 2014; 135:1187-94. [PMID: 24488924 DOI: 10.1002/ijc.28757] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 01/21/2014] [Accepted: 01/23/2014] [Indexed: 12/16/2022]
Abstract
Circulating microRNAs are promising biomarkers for non-invasive testing and dynamic monitoring in cancer patients. However, no consensus exists regarding the normalization of circulating microRNAs in the quantification, making the results incomparable. We investigated global circulating microRNA profiles to identify a stable endogenous control for quantifying circulating microRNAs using three cohorts (n = 544), including 168 control individuals (healthy subjects and those with chronic hepatitis B and cirrhosis) and 376 cancer patients (hepatocellular, colorectal, lung, esophageal, gastric, renal, prostate, and breast cancer patients). GeNorm, NormFinder, and coefficient of variability (CV) were used to select the most stable endogenous control, whereas Ingenuity Pathway Analysis (IPA) was adopted to explore its signaling pathways. Seven candidates (miR-1225-3p, miR-1228, miR-30d, miR-939, miR-940, miR-188-5p, and miR-134) from microarray analysis and four commonly used controls (miR-16, miR-223, let-7a, and RNU6B) from literature were subjected to real-time quantitative reverse transcription-polymerase chain reaction validation using independent cohorts. MiR-1228 (CV = 5.4%) with minimum M value and S value presented as the most stable endogenous control across eight cancer types and three controls. IPA showed miR-1228 to be involved extensively in metabolism-related signal pathways and organ morphology, implying that miR-1228 functions as a housekeeping gene. Functional network analysis found that "hematological system development" was on the list of the top networks that associate with miR-1228, implying that miR-1228 plays an important role in the hematological system. The results explained the steady expression of miR-1228 in the blood. In conclusion, miR-1228 is a promising stable endogenous control for quantifying circulating microRNAs in cancer patients.
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Affiliation(s)
- Jie Hu
- Liver Cancer Institute Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Fudan University, Shanghai, China
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