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Wang J, He N, Wang R, Tian T, Han F, Zhong C, Zhang C, Hua M, Ji C, Ma D. Analysis of TET2 and EZH2 gene functions in chromosome instability in acute myeloid leukemia. Sci Rep 2020; 10:2706. [PMID: 32066746 PMCID: PMC7026035 DOI: 10.1038/s41598-020-59365-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 01/23/2020] [Indexed: 11/09/2022] Open
Abstract
TET2 and EZH2 play important roles in the epigenetic regulation in many cancers. However, their specific roles in acute myeloid leukemia (AML) pathogenesis remain unknown. Here, the expression, methylation or mutation of EZH2 and TET2 was determined and further correlated with the levels of the chromosome instability (CIN) genes MAD2 and CDC20. We down-regulated EZH2 and TET2 in AML cell lines and assessed the effect on CIN using fluorescence in situ hybridization (FISH). Our results showed that TET2, EZH2, MAD2 and CDC20 were aberrantly expressed in AML patients. The expression level of MAD2 or CDC20 was positively correlated with that of TET2 or EZH2. Hypermethylation of the TET2 gene down-regulated its transcription. Down-regulation of EZH2 or TET2 expression inhibited apoptosis, affected MAD2 and CDC20 expression, and promoted CIN in AML cells. Decitabine treatment restored TET2 methylation and EZH2 transcription and ameliorated CIN in AML. Therefore, TET2 and EZH2 play a tumor-inhibiting role in AML that affects CIN via MAD2 and CDC20.
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Affiliation(s)
- Jingyi Wang
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, P.R. China.,Department of Hematology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250011, P.R. China
| | - Na He
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Ruiqing Wang
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Tian Tian
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Fengjiao Han
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Chaoqin Zhong
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Chen Zhang
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Mingqiang Hua
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Chunyan Ji
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Daoxin Ma
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, P.R. China.
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Kaundal B, Srivastava AK, Dev A, Mohanbhai SJ, Karmakar S, Roy Choudhury S. Nanoformulation of EPZ011989 Attenuates EZH2–c-Myb Epigenetic Interaction by Proteasomal Degradation in Acute Myeloid Leukemia. Mol Pharm 2020; 17:604-621. [DOI: 10.1021/acs.molpharmaceut.9b01071] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Babita Kaundal
- Institute of Nano Science and Technology, Phase-10, Mohali (Habitat Center), Punjab 160062, India
| | - Anup K. Srivastava
- Institute of Nano Science and Technology, Phase-10, Mohali (Habitat Center), Punjab 160062, India
| | - Atul Dev
- Institute of Nano Science and Technology, Phase-10, Mohali (Habitat Center), Punjab 160062, India
| | - Soni Jignesh Mohanbhai
- Institute of Nano Science and Technology, Phase-10, Mohali (Habitat Center), Punjab 160062, India
| | - Surajit Karmakar
- Institute of Nano Science and Technology, Phase-10, Mohali (Habitat Center), Punjab 160062, India
| | - Subhasree Roy Choudhury
- Institute of Nano Science and Technology, Phase-10, Mohali (Habitat Center), Punjab 160062, India
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Memari F, Joneidi Z, Taheri B, Aval SF, Roointan A, Zarghami N. Epigenetics and Epi-miRNAs: Potential markers/therapeutics in leukemia. Biomed Pharmacother 2018; 106:1668-1677. [PMID: 30170355 DOI: 10.1016/j.biopha.2018.07.133] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Revised: 07/04/2018] [Accepted: 07/24/2018] [Indexed: 12/12/2022] Open
Abstract
Epigenetic variations can play remarkable roles in different normal and abnormal situations. Such variations have been shown to have a direct role in the pathogenesis of various diseases either through inhibition of tumor suppressor genes or increasing the expression of oncogenes. Enzymes involving in epigenetic machinery are the main actors in tuning the epigenetic-based controls on gene expressions. Aberrant expression of these enzymes can trigger a big chaos in the cellular gene expression networks and finally lead to cancer progression. This situation has been shown in different types of leukemia, where high or low levels of an epigenetic enzyme are partly or highly responsible for involvement or progression of a disease. DNA hypermethylation, different histone modifications, and aberrant miRNA expressions are three main epigenetic variations, which have been shown to play a role in leukemia progression. Epigenetic based treatments now are considered as novel and effective therapies in order to decrease the abnormal epigenetic modifications in patient cells. Different epigenetic-based approaches have been developed and tested to inhibit or reverse the unusual expression of epigenetic agents in leukemia. The reciprocal behavior of miRNAs in the regulation of epigenetic modifiers, while being regulated by them, unlocks a new opportunity in order to design some epigenetic-based miRNAs able to silence or sensitize these effectors in leukemia.
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Affiliation(s)
- Fatemeh Memari
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zeinab Joneidi
- Department of Genetics and Molecular Medicine, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Behnaz Taheri
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sedigheh Fekri Aval
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Roointan
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nosratollah Zarghami
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran; Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Clinical Biochemistry and Laboratory Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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Safaei S, Baradaran B, Hagh MF, Alivand MR, Talebi M, Gharibi T, Solali S. Double sword role of EZH2 in leukemia. Biomed Pharmacother 2018; 98:626-635. [DOI: 10.1016/j.biopha.2017.12.059] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/11/2017] [Accepted: 12/14/2017] [Indexed: 12/18/2022] Open
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